U.S. patent application number 17/315274 was filed with the patent office on 2022-09-15 for portable blowing device.
This patent application is currently assigned to Shenzhen Lanhe Technologies Co., Ltd.. The applicant listed for this patent is Shenzhen Lanhe Technologies Co., Ltd.. Invention is credited to You LAI, Tong LI, Weiping LI, Kai LIU, Quan LV, Xunhuan WU, Guang YANG, Jun ZHU.
Application Number | 20220290687 17/315274 |
Document ID | / |
Family ID | 1000006560467 |
Filed Date | 2022-09-15 |
United States Patent
Application |
20220290687 |
Kind Code |
A9 |
LIU; Kai ; et al. |
September 15, 2022 |
Portable blowing device
Abstract
A portable blowing device includes a body and fans arranged in
the body. Air channels are arranged in the body and extend in the
length direction of the body to allow airflow to pass through. Wind
shields are arranged in the air channels, and a periphery of the
wind shield is closely connected with a side wall of the air
channel so that a sub-air channel is formed between the wind shield
and the side wall of the air channel. Air outlets are formed in the
side wall for communicating with outside and the sub-air channel,
and airflow generated by the fan can enter the sub-air channel and
then exits the air outlets. Because of the reduced volume of the
sub-air channel, the airflow is concentrated after entering the
sub-air channel, and airflow exiting the air outlets is
strengthened, so that the cooling effect and the user experience
are improved.
Inventors: |
LIU; Kai; (Shenzhen, CN)
; WU; Xunhuan; (Shenzhen, CN) ; YANG; Guang;
(Shenzhen, CN) ; LI; Weiping; (Shenzhen, CN)
; ZHU; Jun; (Shenzhen, CN) ; LV; Quan;
(Shenzhen, CN) ; LAI; You; (Shenzhen, CN) ;
LI; Tong; (Shenzhen, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Shenzhen Lanhe Technologies Co., Ltd. |
Shenzhen |
|
CN |
|
|
Assignee: |
Shenzhen Lanhe Technologies Co.,
Ltd.
Shenzhen
CN
|
Prior
Publication: |
|
Document Identifier |
Publication Date |
|
US 20210355959 A1 |
November 18, 2021 |
|
|
Family ID: |
1000006560467 |
Appl. No.: |
17/315274 |
Filed: |
May 8, 2021 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2020/089050 |
May 7, 2020 |
|
|
|
17315274 |
|
|
|
|
PCT/CN2020/089049 |
May 7, 2020 |
|
|
|
PCT/CN2020/089050 |
|
|
|
|
PCT/CN2021/072345 |
Jan 16, 2021 |
|
|
|
PCT/CN2020/089049 |
|
|
|
|
PCT/CN2019/123073 |
Dec 4, 2019 |
|
|
|
PCT/CN2021/072345 |
|
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04D 29/4246 20130101;
F04D 25/0673 20130101; F04D 29/441 20130101; F04D 29/424 20130101;
F25B 21/02 20130101 |
International
Class: |
F04D 29/42 20060101
F04D029/42; F04D 25/06 20060101 F04D025/06; F04D 29/44 20060101
F04D029/44; F25B 21/02 20060101 F25B021/02 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 9, 2019 |
CN |
201921684168.3 |
Jan 18, 2020 |
CN |
202020122560.5 |
Jan 19, 2020 |
CN |
202020122804.X |
Jan 19, 2020 |
CN |
202020135409.5 |
May 13, 2020 |
CN |
202020796618.4 |
Aug 25, 2020 |
CN |
202021804208.6 |
Dec 31, 2020 |
CN |
202011641197.9 |
Claims
1. A portable blowing device, comprising: a body for being hung
around a neck of a human body; and a fan disposed in the body;
wherein an air channel corresponding to the fan is arranged in the
body, and the air channel extends in a length direction of the body
and has a side wall surrounding the air channel; a wind shield is
arranged in the air channel and the wind shield is closely
connected with a part of the side wall of the air channel so that a
sub-air channel is formed between the wind shield and the other
part of the side wall of the air channel, and air outlets are
formed in the other part of the side wall for communicating with
the sub-air channel and outside; and airflow generated by the fan
is capable of entering the sub-air channel and then exiting the air
outlets.
2. The portable blowing device according to claim 1, wherein the
body comprises a first housing and a second housing, the first
housing and the second housing are connected together to form the
air channel, and the wind shield is integrally extended from an
inner wall of the first housing or/and the second housing.
3. The portable blowing device according to claim 1, wherein the
body comprises an inner housing close to a neck of the human body
and an outer housing away from the neck of the human body, the wind
shield is connected with the outer housing and divides the air
channel into the sub-air channel and a cavity, a battery and a
circuit board electrically connected with the fan are arranged in
the cavity, and the circuit board is further electrically connected
with a switch exposed from the body.
4. The portable blowing device according to claim 3, wherein both
sides of the wind shield are bent and extended toward the outer
housing to form hems so that a groove is formed between the hems,
and the battery is at least partially received in the groove.
5. The portable blowing device according to claim 1, wherein a
partition is further arranged in the air channel, the wind shield
divides the air channel into a first cavity and a second cavity,
and the partition is arranged in the second cavity and divides the
second cavity into the sub-air channel and a sub-cavity.
6. The portable blowing device according to claim 1, wherein the
body comprises a flexible connector and two supports respectively
connected to two opposite ends of the flexible connector, the
flexible connector comprises a bending and shaping member and a
soft rubber sleeve enclosing the bending and shaping member, the
two opposite ends of the flexible connector are respectively
provided with connecting parts for extending into the supports, the
connecting portions are provided with positioning holes, and
fasteners pass through the positioning holes and are locked and
connected to corresponding supports.
7. The portable blowing device according to claim 1, wherein the
body comprises at least three fans and at least three air channels
respectively corresponding to the fans, at least one air channel is
provided with a wind shield extending along the length of the air
channel, the wind shield divides the air channel into a sub-air
channel and a receiving cavity, and the wind shield is configured
for preventing airflow generated by the fan from entering the
receiving cavity.
8. The portable blowing device according to claim 1, wherein a
guide vane is arranged in the sub-air channel.
9. A portable blowing device, comprising: a body for being hung
around a neck of a human body, the body comprising a connector, and
a first support and a second support respectively connected to two
opposite ends of the connector; and fans and driving devices
configured for driving the fans to run being respectively arranged
in the first support and the second support; wherein the first
support and the second support each comprise an outer side wall
away from the neck of the human body and an inner side wall close
to the neck of the human body, the driving device in one of the
first support and the second support is fixed to the outer side
wall, and the driving device in the other of the first support and
the second support is fixed to the inner side wall.
10. The portable blowing device according to claim 9, wherein the
driving device comprises a stationary part and a rotating part, the
stationary part of the driving device in one of the first support
and the second support is fixed to the outer side wall, the
stationary part of the driving device in the other of the first
support and the second support is fixed to the inner side wall, and
the rotating part is fixedly connected with the fan for driving the
fan to rotate.
11. The portable blowing device according to claim 10, wherein a
through hole is defined at an axial center of the stationary part,
the fan comprises a rotating shaft and an impeller rotatable with
the rotating shaft, and the rotating shaft is rotatably inserted
into the through hole so that the rotating part is rotatable
relative to the stationary part.
12. A portable blowing device for being hung around a neck of a
user, comprising: a body comprising supports; and a fan arranged in
the body; wherein an air channel communicating with the fan is
arranged in the supports, and an air guiding member is arranged in
the air channel to divide the air channel into a first air channel
and a second air channel, a side wall of the support surrounding
the air channel comprises a first section and a second section
located on opposite sides of the air guiding member, the first
section is provided with first air outlets communicating with the
first air channel, and the second section is provided with second
air outlets communicating with the second air channel.
13. The portable blowing device according to claim 12, wherein the
support comprises an inner side wall close to the neck of the user
and an outer side wall away from the neck of the user, the first
air outlets and the second air outlets are arranged on the inner
side wall, a starting end of the air guiding member divides an
inlet of the air channel into a first air inlet and a second air
inlet, the first air inlet and the second air inlet respectively
communicate with the first air channel and the second air channel,
and an area of the first air inlet is smaller than that of the
second air inlet.
14. The portable blowing device according to claim 13, wherein a
guide vane is arranged in the second air channel.
15. The portable blowing device according to claim 14, wherein a
distance between an end of the guide vane close to the fan and a
lower side wall of the support is greater than a distance between
an end of the guide vane away from the fan and the lower side wall
of the support; or two sides of the guide vane in a width direction
thereof closely contact with an inner wall of the second air
channel.
16. The portable blowing device according to claim 12, wherein the
first air channel is gradually enlarged from an end away from the
fan toward the fan, and the second air channel is gradually
enlarged from an end away from the fan toward the fan.
17. The portable blowing device according to claim 16, wherein the
air guiding member comprises a first guiding plate and a second
guiding plate, ends of the first guiding plate and the second
guiding plate close to the fan are connected with each other, and
ends of the first guiding plate and the second guiding plate away
from the fan are respectively connected with a side wall of the air
channel.
18. The portable blowing device according to claim 17, wherein the
air guiding member further comprises a connecting plate connecting
the first guiding plate with the second guiding plate, one of the
connecting plate and the side wall of the support surrounding the
air channel is formed with a positioning stud, and the other one is
formed with a positioning hole for insertion of the positioning
stud.
19. The portable blowing device according to claim 16, wherein the
body further comprises a connector, the supports are respectively
connected to opposite ends of the connector, a semiconductor
temperature control device is arranged in the connector, and the
semiconductor temperature control device comprises a heat sink
arranged in the connector, a heat conducting member arranged on an
inner side wall of the connector, a semiconductor refrigeration
sheet attached between the heat sink and the heat conducting
member, and a cooling fan arranged at one end of the heat sink.
20. The portable blowing device according to claim 12, wherein the
body comprises a flexible connector and supports respectively
connected to opposite ends of the flexible connector, the fan and
the air channel are disposed in the supports, and the flexible
connector comprises a soft rubber part and hard parts formed at
opposite ends of the soft rubber part through injection molding;
and the hard part comprises a fixing portion located in the soft
rubber part through injection molding and a connecting portion
exposed from the soft rubber part, and the connecting portions
connected with the support.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of
cooling devices, in particular to a portable blowing device.
BACKGROUND
[0002] With people's growing request for a more convenient life in
recent years, various portable fans such as neck fans have appeared
in the market to meet the needs in outdoor activities or other life
scenes. Neck fans break the activity limitation of hand-held fans.
Whether it is during exercise and outdoor activities or in the
office, neck fans can achieve the effect of blowing air anytime and
anywhere while freeing users' hands.
[0003] An existing neck fan generally comprises a support for
resting on the neck of a human body and a fan located in the
support. An air channel corresponding to the fan is arranged in the
support, air outlets communicating with the outside are arranged on
a side wall of the air channel, and airflow generated by the fan
enters the air channel and then is blown out from the air outlets,
thereby cooling the neck of the human body. However, because the
air channel of the existing fan is directly formed by an inner side
wall of a housing of the support, the volume of the air channel is
quite large, making the airflow generated by the fan dispersed
after reaching the air channel, so the airflow blown out from the
air outlets is weak and the cooling effect is poor, which affects
the user experience.
BRIEF SUMMARY OF THE INVENTION
[0004] The purpose of this present disclosure is to provide an
improved portable blowing device. By arranging a wind shield in an
air channel of a support, a sub-air channel with a reduced volume
is formed in the air channel. Airflow generated by the fan enters
the sub-air channel and then is blown out from air outlets. Due to
the volume of the sub-air channel is reduced compared to the air
channel, the airflow generated by the fan is concentrated after
entering the sub-air channel, and the airflow blown out from the
air outlets is strengthened, so that the cooling effect and the
user experience are improved.
[0005] In one aspect, the present disclosure provides a portable
blowing device comprising a body for being hung around a neck of a
human body and fans positioned in the body, wherein air channels
corresponding to the fans are arranged in the body, and the air
channels extend in the length direction of the body. A wind shield
is arranged in the air channel, and the wind shield is closely
connected with a part of a side wall of the air channel, so that a
sub-air channel is formed between the wind shield and the other
part of the side wall of the air channel. Air outlets communicating
with the outside are formed in the side wall of the sub-air
channel, and airflow generated by the fan enters the sub-air
channel and then is blown out from the air outlets.
[0006] In another aspect, a portable blowing device comprises a
body for being hung around a neck of a human body and fans located
in the body. The body comprises a connector and a first support and
a second support respectively connected to two ends of the
connector. The fans and driving devices for driving the fans to run
are respectively arranged in the first support and the second
support. The first support and the second support each comprise an
outer side wall away from the neck of the human body and an inner
side wall close to the neck of the human body. The driving device
in one of the first support and the second support is fixed on the
outer side wall, and the driving device in the other of the first
support and the second support is fixed on the inner side wall.
[0007] In yet another one aspect, the present disclosure further
provides a portable blowing device comprising a body and fans
arranged in the body. The body comprises supports. Air channels
communicating with the fans are arranged in the supports. An air
guiding member is arranged in the air channel to divide the air
channel into a first air channel and a second air channel. A side
wall of the support comprises a first section and a second section
located on both sides of the air guiding member. The first section
is provided with first air outlets communicating with the first air
channel, and the second section is provided with second air outlets
communicating with the second air channel.
[0008] Preferably, the support comprises an inner side wall close
to the neck of the human body and an outer side wall away from the
neck of the human body. The first air outlets and the second air
outlets are arranged on the inner side wall. A starting end of the
air guiding member divides an inlet of the air channel into a first
air inlet and a second air inlet. The first air inlet and the
second air inlet respectively communicate with the first air
channel and the second air channel, and the area of the first air
inlet is smaller than that of the second air inlet.
[0009] According to the portable blowing device provided in the
present disclosure, the wind shield is arranged in the air channel
of the support to make a portion of the air channel to form a
sub-air channel which has a reduced cross-sectional area and
therefore a reduced volume. Airflow generated by the fan enters the
sub-air channel and then is blown out from the air outlets. Due to
the reduced volume of the sub-air channel formed by the wind
shield, the airflow generated by the fan is concentrated after
entering the sub-air channel and wind blown out from the air
outlets is strengthened, so that the cooling effect and the user
experience are improved.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0010] FIG. 1 is a perspective assembled view of a portable blowing
device according to Embodiment 1 of the present disclosure.
[0011] FIG. 2 is a partially exploded view of FIG. 1.
[0012] FIG. 3 is another partially exploded view of FIG. 1.
[0013] FIG. 4 is a sectional view of a first support of the
portable blowing device of FIG. 1.
[0014] FIG. 5 is a perspective exploded view of a portable blowing
device according to Embodiment 2 of the present disclosure.
[0015] FIG. 6 is a sectional view of an inner case of the portable
blowing device of FIG. 5.
[0016] FIG. 7 is a perspective exploded view of a portable blowing
device according to Embodiment 3 of the present disclosure.
[0017] FIG. 8 is a perspective view of a portable blowing device
according to the Embodiment 4 of the present disclosure.
[0018] FIG. 9 is a partially exploded view of the portable blowing
device in FIG. 8.
[0019] FIG. 10 is another partially exploded view of the portable
blowing device in FIG. 8.
[0020] FIG. 11 is a partial structural sectional view of the
portable blowing device in FIG. 8.
[0021] FIG. 12 is a perspective view of a portable blowing device
according to Embodiment 5 of the present disclosure.
[0022] FIG. 13 is a cross-sectional view of the portable blowing
device shown in FIG. 12 taken along A-A.
[0023] FIG. 14 is an exploded view of the portable blowing device
shown in FIG. 12.
[0024] FIG. 15 is a structural diagram of a fan and a driving
device of the portable blowing device shown in FIG. 14.
[0025] FIG. 16 is an exploded view of a support of the portable
blowing device shown in FIG. 14.
[0026] FIG. 17 is an exploded view of another support of the
portable blowing device shown in FIG. 14.
[0027] FIG. 18 is an assembled view of a portable blowing device
according to Embodiment 6 of the present disclosure.
[0028] FIG. 19 is an exploded view of the portable blowing device
in FIG. 18.
[0029] FIG. 20 is an exploded view of a support of the portable
blowing device in FIG. 18, showing the placement of the fan.
[0030] FIG. 21 is an exploded view of a portable blowing device
according to Embodiment 7 of the present disclosure.
[0031] FIG. 22 is a view of an inner case of the portable blowing
device according to Embodiment 7 of the present disclosure.
[0032] FIG. 23 is a sectional view of FIG. 22 taken along A-A.
[0033] FIG. 24 is a perspective view of a portable blowing device
according to Embodiment 8 of the present disclosure.
[0034] FIG. 25 is a perspective view of a portable blowing device
according to Embodiment 9 of the present disclosure.
[0035] FIG. 26 is an exploded view of the portable blowing device
in FIG. 25.
[0036] FIG. 27 is another exploded view of the portable blowing
device in FIG. 25.
[0037] FIG. 28 is a perspective view of a flexible connection
structure of the portable blowing device in FIG. 25.
[0038] FIG. 29 is an exploded view of the flexible connection
structure in FIG. 28 before injection molding.
[0039] FIG. 30 is a structural diagram of a portable blowing device
according to Embodiment 10 of the present disclosure.
[0040] FIG. 31 is a partly exploded view of the portable blowing
device according to Embodiment 10 of the present disclosure.
[0041] FIG. 32 is an exploded view of the portable blowing device
according to Embodiment 10 of the present disclosure.
[0042] FIG. 33 is a side view of a first inner housing according to
Embodiment 10 of the present disclosure.
[0043] FIG. 34 is another exploded view of the portable blowing
device according to Embodiment 10 of the present disclosure.
[0044] FIG. 35 is a side view of a first inner housing of a
portable blowing device according to the Embodiment 11 of the
present disclosure.
[0045] FIG. 36 is a structural diagram of a portable blowing device
according to Embodiment 12 of the present disclosure.
[0046] FIG. 37 is a partly exploded view of the portable blowing
device of FIG. 36.
[0047] FIG. 38 is an exploded view of the portable blowing device
of FIG. 36.
DETAILED DESCRIPTION OF THE INVENTION
[0048] In order to further explain the technical means and efficacy
adopted by the present disclosure to achieve the intended purpose
of the present disclosure, the specific implementation mode,
structure, characteristics and efficacy of a portable blowing
device according to the present disclosure are described in detail
as follows with reference to the attached drawings and preferred
embodiments.
Embodiment 1
[0049] As shown in FIG. 1 to FIG. 4, a portable blowing device for
example a neck fan in accordance with a first embodiment of the
present disclosure comprises a body 10 for resting on the neck of a
human body and fans 20 disposed in the body 10. Air channels 230
corresponding to the fans 20 are arranged in the body 10, and the
air channels 230 extend along the length of the body 10 (i.e., a
circumference of the neck), that is, the extending direction of the
air channels 230 and the extending direction of the body 10 are the
same. A wind shield 40 is arranged in the air channel 230.
Preferably, a periphery of the wind shield 40 is closely connected
with a part of a side wall of the air channel 230, so that a
sub-air channel 231 is formed between the wind shield 40 and the
other part of the side wall of the air channel 230. Air outlets 232
communicating with the outside are formed in the other part of the
side wall of the air channel 230 corresponding to the sub-air
channel 231. Airflow generated by the fan 20 is capable of entering
the sub-air channel 231 and then exiting the sub-air channel 231
via the air outlets 232.
[0050] According to the neck fan provided in the present
embodiment, the wind shield 40 is provided in the air channel 230
of the body 10 to form the sub-air channel 231 in the air channel
230. Airflow generated by the fans 20 enters the sub-air channels
231 and then exits the air outlets 232. Compared with the air
channel 230, the sub-air channel 231 has a reduced cross section
area and therefore a reduced volume. The airflow generated by the
fans 20 is concentrated after entering the sub-air channel 231, and
airflow blown out from the air outlets 232 is strengthened, so that
the cooling effect and the user experience are improved.
[0051] Specifically, in the present embodiment, the wind shield 40
is an independent member arranged in the body 10. The body 10
comprises a first support 11, a second support 13 and a flexible
connector 12 connecting the first support 11 with the second
support 12. Each of the first support 11 and the second support 13
is provided with the air channel 230 and the wind shield 40 located
in the air channel 230. The ends, away from the flexible connector
12, of the first support 11 and the second support 13 are
respectively provided with the fans 20. The flexible connector 12
comprises a soft rubber sleeve 121 and a bending and shaping member
122 located in the soft rubber sleeve. Two opposite ends of the
bending and shaping member 122 are respectively connected with
locking members 123. The ends of the first support 11 and the
second support 13 are respectively provided with locking grooves
111/131, and the locking members 123 are locked in the locking
grooves 111/131, so that the flexible connector 12 connects the
first support 11 with the second support 13 to form the whole body
10. It is understandable that the structure of the flexible
connector 12 is not limited to the structure described in detail
above, so long as it enable the body 10 be bent or straightened to
enlarge or reduce the opening formed between the first and second
supports 13. In the present embodiment, the body 10 is configured
to comprise the flexible connector 12, the first support 11 and the
second support 13, so that the body 10 can be bent, straightened or
deformed at the flexible connector 12, which enables a user to
bend, straightened or deform the body 10 to wear it on the neck
easily. Specifically, in the present embodiment, the bending and
shaping member 122 is a metal hose.
[0052] In other embodiments, if the body 10 has a large enough
opening formed between the first and second supports 13 to allow
the user to wear it, the body 10 may not comprise the flexible
connector, that is, the flexible connector is omitted and the body
10 is formed as a one-piece component. Two ends of the one-piece
body 10 are respectively provided with the fans 20, and the air
channels 230 and the sub-air channels 231 corresponding to the fans
20 are arranged between the two fans 20. Alternatively, one or two
fans 20 may be arranged in the middle of the body 10, and air
channels 230 and sub-air channels 231 corresponding to the fans 20
are respectively arranged on both sides of the body 10.
[0053] Further, the first support 11 and the second support 13
respectively comprise first housings 112/132 and second housings
113/133, and the first housings 112/132 and the corresponding
second housings 113/133 cooperatively form the air channels 230
after being assembled together. The fan 20 in the first support 11
is disposed at an end, away from the flexible connector 12, of the
first support 11. The fan 20 in the second support 13 is disposed
at an end, away from the flexible connector 12, of the second
support 13. The air channels 230 of the first support 11 and the
second support 13 are separated by the flexible connector 12.
[0054] The wind shield 40 comprises a shielding part 41 extending
along the length direction of the corresponding air channel 230,
and a connecting part 42 connected to one end of the shielding part
41 facing the corresponding fan. One end of the connecting part 42
is connected with the shielding part 41, and the other end abuts
against the part of the side wall of the air channel 230, so that
the sub-air channel 231 is formed between the wind shield 40 and
the other part of the side wall of the air channel 230. Airflow
generated by the fan 20 enters the sub-air channel 231 and then is
blown to the outside from the air outlets 232. In the present
embodiment, the wind shield 40 divides the corresponding air
channel 230 into the corresponding sub-air channel 231 and a cavity
233 which does not communicate with the sub-air channel 231. Thus,
the wind shield 40 can prevent the airflow generated by the fan 20
from entering the cavity 233. A battery 50 and a circuit board 55
electrically connected with the corresponding fan 20 are arranged
in the cavity 233. The circuit board 55 is also electrically
connected with a switch 90 which is arranged outside the body 10.
The battery 50 is configured to supply power to the fan 20, and the
switch 90 is configured to control the fan 20. Preferably, a
surface, facing the sub-air channel 231, of the connecting part 42
is a smooth slope, such as a smooth straight surface or a smooth
curved surface, so that the connecting part 42 has less resistance
to the airflow generated by the fan 20 and allows the airflow to
enter the sub-air channel 231 more easily. The battery 50 is
located at a position, close to the connecting part 42, in the
cavity 233 and contacts with the shielding part 41, so that heat
generated by the battery 50 during operation can be transferred to
the shielding part 41 and then be taken away by the airflow
generated by the fan 20 to thereby prevent the battery 50 from
overheating.
[0055] The fan 20 has a rotation center, and the fan 20 comprises a
plurality of blades 21 arranged around the rotation center. The
distance L between an end, close to the fan 20, of the wind shield
40 and a tangent line of a circular rotation track formed by the
ends of the plurality of blades 21 is 2-7 mm. With this design, the
airflow generated by the fan 20 can enter the sub-air channel 231
to the maximum extent, so that the utilization rate of the fan 20
is improved. In the present embodiment, the distance L is
preferably 3-5 mm.
[0056] In the present embodiment, the body 10 is of an arc-shaped
structure for fitting the neck of a user such as a human body. The
body 10 comprises an inner side wall 151 close to the neck of the
human body and an outer side wall 152 away from the neck of the
human body in use, and the air outlets 232 penetrate through the
inner side wall 151. In the present embodiment, the second housings
113/133 are formed as the outer side walls 152 of the supports.
Thus, the second housings 113/133 is also named as outer housings.
The first housings 112/132 are formed as the inner side walls 151
of the supports. Thus, the first housings 112/132 is also named as
inner housings. The first housings 112/132 and the second housings
113/133 are respectively provided with air inlets 114/134 at
positions corresponding to the fans 20, the second housings 133/133
are provided with protective covers 115/135 at positions
corresponding to the air inlets 114/134, and the protective covers
115/135 cover the air inlets 114/134 of the second housings 113/133
and are spaced from the air inlets 114/134. This design can
effectively prevent the user's hair from entering the fans 20
through the air inlets 114/134 of the second housings 113/133 when
the user wears the neck fan. Due to the protective covers 115/135
are spaced from the air inlets 114/134 with gaps formed
therebetween, the fans 20 can draw external airflow through the
gaps to generate airflow.
[0057] In the present embodiment, there are a plurality of air
outlets 232 which are formed in the inner side walls 151 of the
supports 11/13 and arranged side by side at intervals along the
length of the body 10, so that the airflow generated by the fans 20
can blow to most parts of the neck of the human body, allowing a
larger cooling area and a better cooling effect. In the present
embodiment, the wind shields 40 are plate-shaped, and peripheries
of the wind shields 40 closely contact the inner surfaces of the
second housings 113/133, i.e., the outer side walls 152, so that
the air channels 230 are divided into the sub-air channels 231
located in the inner side and the cavities 233 located in the outer
side. In the present embodiment, the upper and lower sides of the
wind shield 40 are bent and extended toward the outer side wall to
form hems 404, so that a groove 406 is formed between the two hems
404. The shape of the groove 406 matches the shape of the battery
50, and the battery 50 is at least partially located in the groove
406, so that the battery 50 can be better positioned and firmly
located in the cavity 233. Of course, in other embodiments, the
peripheries of the wind shields 40 may closely contact the inner
side walls 151 and the outer side walls 152, so that the wind
shields 40 form the cavities 233 with part of the inner side walls
and the outer side walls, and the wind shields 40 form the sub-air
channels 231 with the other part of the inner side walls and the
outer side walls. The present disclosure does not limit which part
of the side wall of the air channel 230 the wind shield 40 is
connected with in the body 10. In other embodiments, the wind
shield 40 can also be a rubber block with a certain thickness
formed by integrally extending from the inner side surface of the
first housing 112/132 or the second housing 113/133, or a rubber
block with a certain thickness assembled in the air channel 230 and
closely contacting with part of the side wall of the air channel
230. The specific shape and forming mode of the wind shield 40 are
not limited in this present disclosure, as long as a sub-air
channel 231 with a reduced cross section area can be formed in the
air channel 230.
Embodiment 2
[0058] The present embodiment is partially identical to Embodiment
1, and the same parts are not repeated here. The difference is as
following: as shown in FIG. 5 and FIG. 6, the first housings
112/132 and the second housings 113/133 are connected to form
cavities therebetween, and an inner case 15 hermetically connected
with an inner surface of the cavity is arranged in the cavity, that
is, an outer surface of the inner case 15 closely contacting with
the inner surface of the cavity, the air channel 230 is arranged in
the inner case 15, and the wind shield 40 is disposed in the air
channel 230 of the inner case 15. By arranging the integrally
formed inner case 15 with the air channel 230 formed therein, after
the first housings 112/132 and the second housings 113/133 are
assembled to form the cavities, the integrally formed inner case 15
is located in the cavity. Even if there are small gaps located at
the joints between the first housings 112/132 and the second
housings 113/133, the airflow generated by the fans 20 will not
escape through the joints between the first housings 112/132 and
the second housings 113/133, thus achieving a strengthened airflow
and a fast cooling effect. Further, in a preferred solution, the
inner case 15 is in the shape of a hollow tube, and the wind shield
40 is a sheet-like partition integrally formed in the inner case
15. The partition, i.e., the wind shield 40, comprises a shielding
part 41 extending along the length of the air channel 230 in the
inner case 15 and a connecting part 42 connected to an end, facing
the fan 20, of the shielding part 41. One end of the connecting
part 42 is connected with the shielding part 41, and the other end
is connected with a part of the side wall of the air channel 230,
so that the sub-air channel 231 is formed between the wind shield
40 and the other part of the side wall of the air channel. In the
present embodiment, the wind shield 40 is a partition, a cavity 233
is formed between a side, opposite the sub-air channel 231, of the
wind shield and the side wall of the air channel, and electronic
components such as batteries 50 can be placed in the cavity 233. Of
course, in other embodiments, the wind shield 40 can also be a
rubber block with a certain thickness integrally extending from the
inner side wall of the air channel 230, or a rubber block with a
certain thickness assembled in the air channel 230 and attached to
the part of the side wall of the air channel 230. The specific
shape and forming mode of the wind shield 40 are not limited, as
long as a sub-air channel 231 with a reduced cross section area can
be formed in the air channel 230.
[0059] According to the neck fan provided in the present
embodiment, the wind shield 40 is arranged in the air channel 230
of the body 10, that is, the wind shield 40 is arranged in the air
channel 230 of the inner case 15 to form the sub-air channel 231 in
the wind shields 40. Airflow generated by the fans 20 enters the
sub-air channels 231 and then is blown out to the outside from the
air outlets 232. Due to the sub-air channels 231 has a reduced
cross-section area, the airflow generated by the fan 20 is
concentrated after entering the sub-air channel 231, and airflow
blown out from the air outlets 232 is strengthened, so that the
cooling effect and the user experience are improved.
[0060] In addition, in the present embodiment, the bending and
shaping member 122 of the flexible connector 12 is a metal sheet,
screw holes are respectively formed in the two ends of the metal
sheet, and the ends of the first support 11 and the second support
13 are locked and connected with the metal sheet by screws
respectively, so that the first support 11 and the second support
13 are connected to the two ends of the flexible connector 12 to
form the body 10 of the neck fan.
Embodiment 3
[0061] The present embodiment is partially identical to Embodiment
1, and the same parts are not repeated here. The difference is as
following: as shown in FIG. 7, the wind shield 40 integrally
extends from the inner surface of the second housing 113/133, that
is, the outer side of the wind shield 40 is integrally connected
with the inner surface of the second housing 113/133, and the inner
side of the wind shield 40 closely contacts with the first housing
112/132 after the first housing 112/132 and the second housing
113/133 are assembled together, so that a sub-air channel 231 with
a reduced cross-section area is formed in the air channel 230 which
is formed by the assembled first housing 112/132 and second housing
113/133. In other embodiments, the wind shield 40 can also
integrally extend from the inner surface of the first housing
112/132, that is, the inner side of the wind shield 40 is
integrally formed with the inner side of the first housing 112/132,
and the outer side of the wind shield 40 closely contacts with the
second housing 133/133 after the first housing 112/132 and the
second housing 113/133 are assembled together, so that a sub-air
channel 231 with a reduced cross-section area is formed in the air
channel 230 which is formed by the assembled first housing 112/132
and second housing 113/133. It is also possible that the wind
shield 40 is formed by extension parts from both the first housing
112/132 and the second housing 113/133, that is, the first
extension part extending from the first housing 112/132 form a
first part of the wind shield 40 and the second extension part
extending from the second housing 113/133 form a second part of the
wind shield 40, and the first and second parts of the wind shield
40 cooperatively form the wind shield 40 after the first housing
112/132 and the second housing 133/133 are assembled together.
[0062] According to the neck fan provided in the present
embodiment, the wind shield 40 is integrally formed in the air
channels 230 of the supports, that is, the wind shield 40
integrally extends from the inner surface of the second housings
113/133, and the sub-air channel 231 with a reduced cross-section
area is formed in the air channel 230 by the wind shield 40.
Airflow generated by the fans 20 enter the sub-air channels 231 and
then is blown out from the air outlets 232. Due to the sub-air
channels 231 with reduced cross-section area, the airflow generated
by the fans 20 is concentrated after entering the sub-air channels
231, and the airflow blown out from the air outlets 231 is
strengthened, so that the cooling effect and the user experience
are improved.
Embodiment 4
[0063] As shown in FIGS. 8-11, the present embodiment provides a
portable blowing device, which is also a neck fan. The neck fan is
to be put on the neck of the human body and comprises a body 10 and
fans 20 arranged in the body 10. Cavities (i.e., air channels)
corresponding to the fans 20 are formed in the body 10, wind
shields 40 and partition members 22 are arranged in the air
channels, and the wind shields 40 and the partition members 22 both
extend along the length direction of the body 10. In the present
embodiment, the body 10 comprises a flexible connector 12, two
supports 13 respectively connected to two opposite ends of the
flexible connector 12, and batteries 50 and circuit boards (not
shown) arranged in the supports 13. There are two fans 20 which are
arranged in the two supports 13 respectively, for example, at an
end, away from the flexible connector 12, of the support 13. The
fans 20 and the batteries 50 are electrically connected with the
circuit boards to provide power to the fans 20. In the present
embodiment, since the two supports 13 have the same structure and
are symmetrically arranged, only one support 13 will be described
below as an example.
[0064] In the present embodiment, the support 13 is of a hollow
structure, the wind shield 40 is configured to divide the air
channel in the support 13 into a first cavity 24 and a second
cavity 26, and the partition member 22 is arranged in the second
cavity 26 to further divide the second cavity 26 into a sub-air
channel 28 and a sub-cavity 29. Preferably, the first cavity 24 and
the sub-cavity 29 do not communicate with the sub-air channel 28,
that is, the first cavity 24 and the sub-cavity 29 are both
completely enclosed cavities, and airflow will not enter the first
cavity 24 or the second sub-cavity 29 after entering the sub-air
channel 28 which communicates with the corresponding fan 20. A side
wall of the support 13 corresponding to the sub-air channel 28 is
provided with air outlets 232 which communicate with the sub-air
channel 28 and the outside of the support 13, the support 13 is
provided with air inlets 34 corresponding to the fan 20, so that
airflow generated by the fan 20 is blown out from the air outlets
232 after passing through the sub-air channel 28. Due to the dual
separation of the air channel in the support 13 by the wind shield
40 and the partition member 22, the cross-section area of the
sub-air channel 28 can be effectively reduced. In this way, the
airflow generated by the fan 20 is concentrated after entering the
sub-air channel 28, and the airflow blown out from the air outlets
232 is strengthened, so that the cooling effect and the user
experience are improved.
[0065] In the present embodiment, the support 13 comprises a first
housing 132 and a second housing 133 which are engaged together,
and the air channel of the support 13 is formed between the first
housing 132 and the second housing 133. Therefore, the outer side
wall of the body 10 is the second housing 133 of the support 13,
and the inner side wall of the body 10 is the first housing 132 of
the support 13.
[0066] More specifically, the wind shield 40 is connected to an
inner side of the outer side wall of the body 10, that is,
connected to the inner side of the second housing 133, and the wind
shield 40 extends along the length direction and width direction of
the support 13, that is, the wind shield 40 has a length direction
along the length direction of the support 13 and a width direction
along the width direction of the support 13. The first cavity 24 is
formed between an outer face of the wind shield 40 and the second
housing 133, and the second cavity 26 is formed between an inner
face of the wind shield 40 and the first housing 112, that is, the
first cavity 24 and the second cavity 26 are distributed at
intervals in the thickness direction of the support 13. The wind
shield 40 is fixedly connected to the inner side of the second
housing 133, for example, by interlocking means or screws. Opposite
two sides of the partition member 22 are respectively connected
with the inner side wall 132 of the support 13 and the inner face
of the wind shield 40, and the partition member 22 has a
plate/panel shape extending along the length direction and the
thickness direction of the support 13, that is, the partition
member 22 has a length direction along the length direction of the
support 13 and has a width direction along the thickness direction
of the support 13. In the present embodiment, one side of the
partition member 22 is integrally connected to the inner surface of
the first housing 132, and the other side of the partition member
22 closely contacts with the inner surface of the wind shield 40,
so that the second cavity 26 is divided by the partition member 22
into the sub-air channel 28 and the second sub-cavity 29
distributed at intervals in the width direction of the support
13.
[0067] In the present embodiment, the air outlets 232 are arranged
in an area between the fan 20 and the flexible connector 12 on the
support 13. There is a plurality of air outlets 232 arranged along
the inner side wall of the support 13, that is, extending along the
length direction of the first housing 132. Specifically, the
plurality of air outlets 232 are arranged on an upper side of the
first housing 132 corresponding to the sub-air channel 28. In other
embodiments, the air outlets 232 may also be arranged at other
positions of the first housing 112 corresponding to the sub-air
channel 28.
[0068] In the present embodiment, both the wind shield 40 and the
partition member 22 are in the shape of arc panels adapted to the
shape of the support 13 in the length direction of the support 13,
and the ends, close to the fan 20, of the wind shield 40 and the
partition member 22 are designed as smooth slopes 23, so that the
airflow generated by the fan 20 can flow into the sub-air channel
28 more smoothly, effectively reducing the noise caused by the
airflow hitting the partition member 22 and the wind shield 40. In
the present embodiment, the partition member 22 acts as an air
guiding member for guiding the airflow generated by the fan 20 into
the sub-air channel 28.
[0069] The battery 50 and the circuit board can be arranged in the
first cavity 24 or the sub-cavity 29, so that electronic components
such as the battery 50 and the circuit board are separated from the
sub-air channel 28, which avoids obstructing the airflow generated
by the fan 20 and realizes a compact structure. In the illustrated
embodiment, there are two batteries 50 which are respectively
arranged in the first cavities 24 of the two supports 13, and the
circuit board can be arranged in the first cavity 24 of one of the
supports 13.
[0070] In the present embodiment, the air inlets 34 and the
protective covers 43 are similar to that in Embodiment 1, which
will not be repeated here.
[0071] In the present embodiment, a switch 90 is arranged on the
outer side wall of the second housing 133, and the switch 90 is
electrically connected with the circuit board and configured to
control the start and stop of the fan 20. The switch 90 is a
push-button switch, and an installation hole 46 is formed in the
outer side wall of the second housing 133. The switch 90 is
installed in the installation hole 46 and protrudes from the outer
face of the second housing 133 for the user to press.
[0072] The flexible connector 12 comprises a bending and shaping
member 122 and a soft rubber sleeve 121 covering the bending and
shaping member 122. Two ends of the bending and shaping member 122
are respectively sleeved with metal sleeves 52 which are enclosed
by the soft rubber sleeve 121. When the flexible connector 12 is
connected with the support 13, a smooth transition is formed
between an outer surface of the soft rubber sleeve 121 and an outer
surface of the support 13. By sleeving the two ends of the bending
and shaping member 122 with the metal sleeves 52 respectively,
bending and deformation of the two ends of the flexible connector
12 can be effectively prevented, to thereby avoid gaps between the
two ends of the flexible connector 12 and the supports 13 becoming
larger.
[0073] The flexible connector 12 enables the orientation of the air
outlets 232 of the neck fan 10 to be adjustable through bending and
twisting the flexible connector 12, so that the airflow flowing out
of the air outlets 232 can blow toward different parts of the human
body such as the neck or the face of the human body. The bending
and shaping member 122 can take and maintain any shape through
bending and twisting, and the shape of the soft rubber sleeve 121
can be changed with the shape of the bending and shaping member
122. The bending and shaping member 122 can be a metal hose, a
serpentine tube, a shaping steel wire, or other members made of a
material making the flexible connector 12 have a shape memory
function so that the flexible connector 12 can maintain its shape
after being bent. The soft rubber sleeve 121 can be made of soft
rubber such as TPU soft rubber.
[0074] The two ends of the flexible connector 12 are respectively
locked and connected with the two supports 13. More specifically,
two ends of the soft rubber sleeve 121 are respectively provided
with connecting portions 54 for extending into connecting ends of
the supports 13, the inner side wall of the second housing 133 is
provided with a fixing base 56 which is provided with a screw hole.
During assembly, an end of the bending and shaping member 122
extending out of the metal sleeve 52 and the connecting portion 54
penetrates into the connecting end of the support 13 and extends
through the fixing piece 58 and is locked by the fixing base 56 and
the fixing piece 58. The fixing piece 58 is of a fixing sheet
structure which is arched toward one side to form a groove. Fixing
holes are provided at opposite ends of the fixing piece 58. The
fixing base 56 is provided with a recess corresponding to the end
of the bending and shaping member 122. During installation, the
fixing piece 58 is attached to the fixing base 56 with the groove
of the fixing piece aligned with the recess of the fixing base 56
so that one side of the end of the bending and shaping member 122
is located in the recess of the fixing base 56, while the other
side of the end of the bending and shaping member 122 is located in
the groove of the fixing piece 58. The fixing piece 58 is fastened
to the fixing base 56 by screws 61 passing through the fixing holes
of the fixing piece 58 to be locked in the screw holes of the
fixing base 56, thereby realizing the locking connection between
the flexible connector 12 and the second housing 133.
[0075] Two positioning holes 62 are formed in the connecting
portion 54, two positioning studs 64 are arranged on the inner side
wall of the second housing 133 corresponding to the positioning
holes 62, screw holes are formed in the positioning studs 64, and
two through holes 66 are formed in the first housing 112
corresponding to the positioning holes 62. Screws 68 pass through
the through holes 66 and the positioning holes 62 in sequence and
then are engaged in the screw holes of the positioning studs 64,
thus realizing the locking connection between the first support 11
and the flexible connector 12. In the illustrated embodiment, the
neck fan 10 further comprises a snap cap 70. An area on the inner
side wall of the first housing 112 corresponding to the through
holes 66, for example, a connecting end of the first housing 112 is
provided with a mounting groove 72. After being fastened in the
through holes 66, heads of the screws 68 are located in the
mounting groove 72, and the snap cap 70 is mounted to the mounting
groove 72 in a snap fit mode to shield the screws 68 from being
exposed, so that the appearance of the product is more
attractive.
[0076] As described above, a locking connection is formed between
the bending and shaping member 122 of the flexible connector 12 and
the second housing 133 of the support 13 and another locking
connection is formed between the first housing 132 of the support
13 and the soft rubber sleeve 121 of the flexible connector 12.
That is, a double locking mechanism is formed between the flexible
connector 12 and the support 13 which makes the connection between
the flexible connector 12 and the support 13 more stable, thus
making the structure of the neck fan stable and firm.
Embodiment 5
[0077] As shown in FIG. 12 to FIG. 14, a portable blowing device
provided by the present embodiment is also a neck fan, which
comprises an arc-shaped body for resting on the neck of the human
body and fans 20 arranged in the body. The body comprises a
connector 12 and supports 13 arranged at opposite two ends of the
connector 12. Preferably, the connector 12 is an arc-shaped
flexible connector 12. A fan 20 and a driving device 400 are
arranged in each support 13, and each support 13 comprises an outer
housing 200 (i.e., the outer side wall of the support 13) and an
inner housing 210 (i.e., the inner side wall of the support 13),
wherein the inner housing 210 is located on a side close to the
neck of the human body and the outer housing 200 is located on a
side away from the neck of the human body. Preferably, the driving
device 400 in one support 13 is fixed on the outer housing 200, and
the driving device 400 in the other support 13 is fixed on the
inner housing 210. The driving device 400 is configured to drive
the fan 20 to rotate.
[0078] In the neck fan of the above embodiment, the driving device
400 in one support 13 is fixed to the outer housing 200 while the
driving device 400 in the other support 13 is fixed to the inner
housing 210, and then the fans 20 are respectively connected with
the driving devices 400, so that the left and right fans 20 have
the same assembly direction when the neck fan is put on the neck of
the human body, and the left and right fans 20 can be of the same
type, which solves the problem that errors tend to occur during fan
assembly and improves the universality of the fan. Because the left
and right fans are exchangeable, the production cost is reduced,
the assembly process is simplified, and the error rate is
reduced.
[0079] In one embodiment, as shown in FIG. 15, the driving device
400 comprises a stationary part 408 and a rotating part 410. The
stationary part 408 of the driving device 400 in one support is
fixed on the inner side wall of the outer housing 200, while the
stationary part 408 of the driving device 400 in the other support
is fixed on the inner side wall of the inner housing 210. The
rotating part 410 is fixedly connected with the fan 20 so that the
fan 20 is rotatable with the rotating part 410.
[0080] The stationary part 408 is provided with a through hole at
its axial center. The fan 20 comprises an impeller 300 and a
rotating shaft 310. The rotating shaft 310 is rotatably inserted
into the through hole of the stationary part 408, so that the
rotating part 410 is rotatable with respect to the stationary part
408 to thereby drive the impeller 300 to rotate. In other
embodiments, a rod 206 is arranged on the inner surface of the
outer housing 200 where the stationary part 408 is installed. The
stationary part 408 is sleeved on the rod 206 and fixedly connected
with the outer housing 200. The rod 206 is of a hollow structure.
The rotating shaft 310 of the fan 20 is rotatably inserted into the
rod 206, so that the stationary part 408 cooperates with the
rotating part 410 to drive the impeller 300 to rotate about the
axis of the rod 206.
[0081] Specifically, in the present embodiment, the driving device
is described as a motor, and the stationary part 408 acts as a
stator of the driving device 400. Each of the housings located at
opposite ends of the arc-shaped body 10 is provided with a stator
inside, one stator being fixed on the inner surface of the outer
housing 200 and the other stator being fixed on the inner surface
of the inner housing 210. The rotating part 410 acts as a rotor of
the driving device 400. A chamber is formed around the rotating
shaft 310 of the fan. The rotor is received in the chamber and
tightly attached to an inner wall of the chamber. When the rotating
shaft 310 is inserted into the through hole or the rod 206, the
stator is located in the chamber and cooperates with the rotor to
form the driving device 400. After being electrified, the rotor
rotates to drive the fan impeller 300 to rotate.
[0082] In the above embodiment, the left and right fans can be
assembled in the same direction, which solves the problem that the
two fans are not exchangeable and assembly errors tend to occur in
a traditional neck fan due to the left and right fans of the
traditional neck fan are in a mirror-image relation.
[0083] In other embodiments, the driving device 400 comprises a
motor (not shown). The motor in one support is fixed to the outer
housing 200, and the motor in the other support is fixed to the
inner housing 210. The fan 20 comprises an impeller 300 and a
sleeve (not shown) which is sleeved on a bearing of the motor and
fixedly connected with the bearing, so that the motor drives the
impeller 300 to rotate.
[0084] Specifically, in the present embodiment, one end of the
motor is fixed to the inner surface of the support 13, and the
other end is provided with a rotatable bearing. Correspondingly,
the fan 20 comprises an impeller 300 and a sleeve arranged at an
axial center of the impeller. By the sleeve being sleeved on the
bearing, the impeller 300 is connected to the bearing. When the
motor works, the rotation of the bearing drives the impeller 300 to
rotate, thus realizing the normal operation of the fan. In other
embodiments, the fan comprises an impeller, and the axial center of
the impeller is provided with a recess in which the bearing of the
motor is fixedly received, so that the motor is capable of driving
the impeller to rotate. Alternatively, the axial center of the
impeller is provided with a through hole penetrating the impeller,
and the bearing of the motor is inserted into the through hole and
fixedly connected with the impeller, so that the motor drives the
impeller to rotate. In other embodiments, the fixing method of the
bearing of the motor and the impeller is not particularly
limited.
[0085] In one embodiment, as shown in FIG. 16, the support 13
further comprises a wind shield 40 which is arranged within the
support 13. Through holes 240, i.e., air outlets, are formed in a
side face of the support 13 which is a face connected between an
outer surface of the outer housing 200 and an outer surface of the
inner housing 210. The wind shield 40 is configured for guiding the
airflow generated by the fan 20 to the through holes 240 where the
airflow exits the support 13.
[0086] Specifically, the outer housing 200 and the inner housing
210 of the support 13 are assembled to form therebetween a cavity
(i.e., air channel) with one end open, the fan 20 and the driving
device 400 are arranged in the cavity, and the open end of the
support 13 is connected with the connector 12. Due to the connector
12 is hollow and the support 13 is long and thin, the airflow
generated by the fan 20 tends to flow to the open end of the
support 13 and not easily be led out of a housing 20 for cooling
the user. By arranging the wind shield 40 in the support 13 and the
through holes 240 in the side face of the support 13, after coming
into contact with the wind shield 230, the airflow generated by the
fan 20 flows along the wind shield 40 to the through holes 240, and
then is led out of the housing 20 to achieve the effect of cooling.
In the present embodiment, in order to achieve a good airflow
guiding effect, the wind shield 40 is arc-shaped and extends from
the side with the through holes of the support 13 to the other side
of the support 13, so that when the outer housing 200 and the inner
housing 210 are assembled, a sub-air channel communicating with the
through holes 240 is formed by the wind shield 40 in the cavity
(air channel) formed between the outer housing 200 and the inner
housing 210, and the extending direction of the wind shield 40 is
along the flow direction of the airflow, which makes the airflow
generated by the fan 20 more concentrated after entering the
sub-air channel and the airflow exiting the through holes 240 be
strengthened. In other feasible embodiments, the wind shield 40 can
be in other shapes, which is not particularly limited here.
[0087] In one embodiment, as shown in FIG. 14, the neck fan further
comprises a bending and shaping member 70 which is a universal
hose. The arc-shaped flexible connector 12 is made of a flexible
material such as soft rubber, and the bending and shaping member 70
is arranged in the arc-shaped flexible connector 12. The bending
and shaping member 70 is hollow and connecting wires such as leads
can be arranged within the bending and shaping member 70. When the
neck fan is used, the combined arc-shaped flexible connector 12 and
universal hose 70 can be adjusted to any angle according to
requirement of the user through bending and deforming. Meanwhile,
the universal hose 70 ensures the stable connection of the
leads.
[0088] In one embodiment, as shown in FIG. 17, the neck fan further
comprises a switch 90 which is arranged on the support 13. In the
present embodiment, a through hole corresponding to the switch 90
is defined in the outer housing 200 and the switch 90 is fixed in
the through hole of the outer housing 200. By adjusting the switch
90, the start and stop of the neck fan can be realized. In
addition, the wind power control of the neck fan can be realized by
adjusting the switch 90.
[0089] Further, as shown in FIG. 17, the neck fan further comprises
a battery 50, which is arranged in the support 13. In the present
embodiment, it is assumed that the battery 50 is arranged in the
support 13. By arranging the battery 50 in the support 13, when the
fan 20 rotates, the battery 50 can provide power to the driving
device 400, so that the neck fan can work at any time. In other
embodiments, there may be two batteries 50, and each support 13 is
provided with one battery 50 to provide power for the corresponding
driving device 400, so that the neck fan has a longer endurance.
Similarly, there may be two switches 90 which control the left and
right driving devices 400 respectively, so that the driving devices
400 can work independently.
[0090] In the neck fan provided by the present embodiment, the
driving device in one of the supports is fixed on the outer side
wall while the driving device in the other support is fixed on the
inner side wall, the left and right fans are assembled in the same
direction, and the left and right fans can be of the same type,
which solves the problem that errors tend to occur during fan
assembly and improves the universality of the fan. Because the left
and right fans are exchangeable, the production cost is reduced,
the assembly process is simplified, and the error rate is
reduced.
Embodiment 6
[0091] As shown in FIGS. 18-20, a portable blowing device provided
in the present embodiment is a neck fan which comprises a body 10
and fans 20 disposed in the body 10. The neck fan can be hung on
the neck of the user through the body 10, so as to cool the user
conveniently.
[0092] The body 10 comprises supports 30 and end housings 40
connected to ends of the supports 30.
[0093] As shown in FIGS. 18 and 20, the support 30 comprises an
inner side wall 31 close to the neck of the user and an outer side
wall 32 away from the neck of the user. The inner side wall 31 and
the outer side wall 32 are detachably connected to ensure that a
joint is airtight, or the inner side wall 31 and the outer side
wall 32 can also be integrally formed by injection molding or other
processes. In the present embodiment, outer surfaces of the inner
side wall 31 and the outer side wall 32 are both curved smooth
surfaces. The inner side wall 31 comprises a middle area 34 close
to the neck of the user, and a first section 35 and a second
section 36 located on the upper and lower sides of the middle area
34 respectively. The first section 35 is provided with first air
outlets 350, and the second section 36 is provided with second air
outlets 360. Of course, it can be understood that the outer surface
of the inner side wall 31 can have three faces with certain angles
formed therebetween or adjacent faces being perpendicular to each
other, the first section 35, the middle area 34 and the second
section 36 are located on the three faces respectively, and the
axis of the first air outlets 350 arranged in the first section 35
and the axis of the second air outlets 360 arranged in the second
section 36 are arranged at a certain angle (or in parallel).
[0094] As shown in FIG. 19, an air channel is arranged in the
support 30. In the present embodiment, the support 30 is preferably
in an arc shape, and an air guiding member 37 is arranged in the
support 30. Specifically, in the present embodiment, the air
guiding member 37 is in the shape of a strip and protrudes from an
inner surface of the outer side wall 32, and the air guiding member
37 extends along the bending direction of the support 30. A top
surface of the air guiding member 37 (i.e., the top surface in the
protruding direction) contacts with the inner surface of the inner
side wall 31 (i.e., the surface of the inner side wall 31 close the
air channel) and the shapes of the top surface of the air guiding
member 37 and the inner surface of the inner side wall 31
completely match at the joint to ensure airtightness of the joint
between the top surface of the air guiding member 37 and the inner
surface of the inner side wall 31. The air guiding member 37
divides the air channel into a first air channel 301 and a second
air channel 302, the first air channel 301 communicates with the
first air outlets 350, and the second air channel 302 communicates
with the second air outlets 360. In other embodiments, the air
guiding member 37 may be omitted and only one air channel is
provided in the support 30, and the inner side wall 31 and the
outer side wall 32 form a cavity acting as the air channel. The
airflow generated by the fan 20 passes through the air channel and
blows toward the neck of the user at multiple angles through the
first air outlets 350 and the second air outlets 360, so as to
achieve an improved cooling effect.
[0095] Refer to FIG. 19, the inner side wall 31 and the outer side
wall 32 of the support 30 can be connected by a detachable
connecting structure, the upper and lower sides of the inner side
wall 31 are respectively connected with the upper and lower sides
of the outer side wall 32, one side of the air guiding member 37 is
integrally formed with the inner surface of the inner side wall 31,
and the other side of the air guiding member 37 abuts against an
inner surface of the outer side wall 32. Alternatively, one side of
the air guiding member 37 is integrally formed with the inner
surface of the outer side wall 32, and the other side of the air
guiding member 37 abuts against the inner surface of the inner side
wall 31.
[0096] With reference to FIG. 18 and FIG. 19, in the present
embodiment, there may be a plurality of first air outlets 350 and a
plurality of second air outlets 360, and the plurality of first air
outlets 350 and the plurality of second air outlets 360 in the same
shape are arranged at equal intervals in the bending direction of
the support 30.
[0097] As shown in FIGS. 19 and 20, in the present embodiment, the
fan 20 is disposed in the end housing 40. The end housing 40 is
provided with an air inlet 401, and the air inlet 401 can be of a
grid structure. The end housing 40 is of an approximately circular
structure which has a housing center (not labeled). The fan 20 has
a rotation center (not labeled), and the rotation center of the fan
and the housing center are eccentrically arranged. The fan 20
comprises a plurality of blades 21 arranged around the rotation
center, a tail end of each blade 21 is provided with a deflection
part 22 facing the air channel, and the deflection directions and
deflection angles of the plurality of deflection parts 22 are the
same, so as to guide the airflow toward the air channel. In the
present embodiment, preferably, the tail ends of the plurality of
blades 21 rotate around the rotation center to form a circular
rotation track, and the perpendicular distance D from a starting
end of the air guiding member 37 to the tangent of the circular
rotation track is 2-7 mm. In a preferred solution, the
perpendicular distance D from the starting end of the air guiding
member 37 to the tangent of the circular rotation track can be 3-5
mm, so that the airflow generated by the fan 20 enters the first
air channel 301 and the second air channel 302 sufficiently, so
that the airflow blown out from the first air outlets 350 and the
second air outlets 360 is strengthened.
[0098] With reference to FIG. 19 and FIG. 20, a guiding plate 402
is arranged in the end housing 40. Preferably, the guiding plate
402 is arranged around a periphery of the fan 20. The shape of the
guiding plate 402 is preferably in accordance with the Archimedes
spiral of a centrifugal fan, so as to guide more airflow into the
air channel. Preferably, the guiding plate 402 is disposed on an
inner surface of the end housing 40. The guiding plate 402 is
integrally formed or detachably connected with the end housing
40.
[0099] In other embodiments, the fan 20 can also be arranged in the
support 30, for example: arranged in the middle of the support 30,
or arranged at the joint of the two supports 30.
[0100] As shown in FIGS. 19 and 20, in the present embodiment, the
air guiding member 37 comprises a body part 370 protruding from the
inner surface of the outer side wall 32. An end close to the fan 20
is defined as a starting end, and an end away from the fan 20 is
defined as a tail end. Preferably, the curvature (or radian) of the
body part 370 extended between the starting end and the tail end is
the same as that of the support 30 A guide plate 371 is provided at
the starting end of the body part 370, and the guide plate 371 is
offset from the extending direction of the body part 370. That is,
the guide plate 371 is of an inclined plate structure extending
inclinedly from the starting end of the body part 370. The guide
plate 371 comprises a tail end connected with the starting end of
the body part 370 and a starting end away from the starting end of
the body part 370. The starting end of the guide plate 371 is
closer to the upper side of the outer side wall 32 than the tail
end of the guide plate 371. Therefore, the starting end of the
guide plate 371 divides an inlet of the air channel into a first
air inlet 303 and a second air inlet 304, the first air inlet 303
corresponds to the first air channel 301, and the second air inlet
304 corresponds to the second air channel 302, that is, the first
air inlet 303 and the second air inlet 304 communicate with the
first air channel 301 and the second air channel 302 respectively.
The cross-sectional area of the first air inlet 303 is smaller than
that of the second air inlet 304. In a preferred solution, the
cross-sectional area of the first air inlet 303 is half of that of
the second air inlet 304, and the volume of airflow entering the
first air channel 301 and the volume of air entering the second air
channel 302 are substantially the same. Due to the arrangement of
the guide plate 371, part of the airflow blowing toward the first
air inlet 303 is diverted to the second air inlet 304, so that the
airflow entering the first air channel 301 and the second air
channel 302 is more uniform, which allows the first air outlet 350
and the second air outlet 360 to discharge airflow uniformly, thus
avoiding the discomfort caused by uneven air discharge from upper
and lower sides of the support 13.
[0101] The air guiding member 37 further comprises a wind shield
372 connected to the tail end of the body part 370, and the wind
shield 372 stops at a tail end of the air channel. In the present
embodiment, specifically, a first wind shield 3721 and a second
wind shield 3722 are provided at the tail end of the body part 370.
Two ends of the first wind shield 3721 are respectively connected
with an upper inner surface of the outer side wall 32 and the body
part 370 to stop the tail end of the first air channel 301, so that
the airflow flows out of the first air outlets 350 after passing
through the first air channel 301. Two ends of the second wind
shield 3722 are connected with a lower inner surface of the outer
side wall 32 and the body part 370 respectively to stop the tail
end of the second air channel 302, so that the airflow flows out of
the second air outlets 360 after passing through the second air
channel 302 and finally reaches the neck of the user for cooling.
As shown in FIGS. 19 and 20, in the present embodiment, the support
30 is of a minor arc structure, and the neck fan comprises two
supports 30 of a minor arc structure. The body 10 of the neck fan
further comprises a flexible connector 12, and the two supports 30
are connected by the flexible connector 12. Preferably, the two
supports 30 are symmetrically arranged with respect to the flexible
connector 12, and when the neck fan is put on the neck of the user,
the two supports 30 are respectively located on the left and right
sides of the neck of the user. The flexible connector 12 comprises
a soft rubber part 501 and a metal piece 502 connected with the
soft rubber part 501, and opposite ends of the metal piece 502 are
respectively connected with the two supports 30. In the present
embodiment, it is preferable to connect the metal piece 502 with
the two supports 30 first, and then wrap the metal piece 502 with
the soft rubber part 501 through an injection molding process, so
that the flexible connector 12 is elastically deformable to allow
the user to stretch the two supports to put on the neck fan easily,
and the strength of the flexible connector 12 can be increased so
that the flexible connector 12 can be repeatedly stretched and
restored to the original state. In the present embodiment, the soft
rubber part 501 is preferably made of a thermoplastic material with
elastic deformation such as silica gel. The metal piece 502 is made
of sheet-like metal with elastic deformation. Besides being
arranged in the soft rubber part 501 through injection molding, the
sheet-like metal piece 502 can be attached to the outside of the
soft rubber part 501 by other means. In other embodiments, the
metal piece 502 can also be a metal hose structure, which is not
limited here.
Embodiment 7
[0102] The present embodiment is basically the same as Embodiment
6, and the same parts are not repeated here. The difference lies in
that: as shown in FIGS. 21-23, the support 30 is further provided
with an inner case 60 inside, and the inner case 60 is integrally
formed and provided with an air channel inside. After the inner
side wall 31 and the outer side wall 32 of the support 30 are
assembled, the integrally formed inner case 60 is located in the
cavity enclosed by the inner side wall 31 and the outer side wall
32. Even if there is a small gap at the joint between the inner
side wall 31 and the outer side wall 32, the airflow will not
escape through the joint between the inner side wall 31 and the
outer side wall 32, whereby a strengthened airflow with a large
volume can be output from the air outlets to cool the user fast.
Further, in a preferred solution, the outer surface of the inner
case 60 and the inner surface of the support 30 contact with each
other and are matched in shape. The inner case 60 is provided with
an air guiding member 37 inside, and the air guiding member 37 has
a structure similar to that of the air guiding member 37 of
Embodiment 6. The air guiding member 37 divides the air channel
into a first air channel 301 and a second air channel 302. The
inner case 60 is provided with first air vents 601 and second air
vents 602. The first air channel 301 communicates with the first
outlets 350 through the first air vents 601, and the second air
channel 302 communicates with the second outlets 360 through the
second air vents 602.
Embodiment 8
[0103] The present embodiment is partially identical to Embodiment
6, and the same parts are not repeated here. The difference lies in
that: as shown in FIG. 24, the flexible connector 12 is omitted,
and the support 30 can be an integral structure. In the present
embodiment, the support 30 is of a major arc configuration, and the
support 30 itself can be made of a material with elastic restoring
force, so that the support 30 can be stretched by holding its two
ends to be put on.
Embodiment 9
[0104] As shown in FIGS. 25-29, a portable blowing device provided
in the present embodiment is a neck fan configured to be put on the
neck of the human body. The neck fan comprises a flexible connector
12 and supports 13 respectively connected to opposite ends of the
flexible connector 12. The structure of the support 13 of the neck
fan provided in the present embodiment is the same as that of the
support 13 of the above-mentioned neck fan in Embodiment 4, so the
specific structure of the support 13 is not described here. The
difference lies in the specific structure of the flexible connector
12, as shown in FIGS. 28 and 29. In the present embodiment, the
flexible connector 12 comprises a bending and shaping member 122
and a flexible connection structure covering the bending and
shaping member 122. The flexible connection structure comprises a
soft rubber sleeve 121 and hard parts 125 arranged at opposite ends
of the soft rubber sleeve 121 through injection molding. The hard
part 125 comprises a fixing portion 45 located within an end of the
soft rubber sleeve 121 through injection molding and a connecting
portion 48 exposed from the soft rubber sleeve 121. The connecting
portion 48 is used for connecting external components, such as for
connecting the support 13. The flexible connection structure is
also provided with a through hole 49 which sequentially penetrates
through the hard part 125 at one end of the soft rubber sleeve 121,
the soft rubber sleeve 121 and the hard part 125 at the other end
of the soft rubber sleeve 121 in the axial direction of the
flexible connection structure, and the through hole 49 allows the
bending and shaping member 122 and elements such as leads connected
between the circuit board and the fan 20 to pass through.
[0105] More specifically, the fixing portion 45 is tapered, the
connecting portion 48 is square, and the fixing portion 45 and the
connecting portion 48 are integrally formed. For example, the
cross-sectional area of the fixing portion 45 gradually decreases
from an end close to the connecting portion 48 to an end away from
the connecting portion 48. The connecting portion 48 is connected
to the larger end of the fixing portion 45, and a step 47 is formed
between the connecting portion 48 and the larger end of the fixing
portion 45. A surface of an end of the connecting portion 48 near
the fixing portion 45 is provided with a positioning groove 482,
and the soft rubber sleeve 121 can be integrally connected to the
positioning groove 482 by injection molding, so that the
positioning groove 482 is at least partially located in the soft
rubber sleeve 121. In the process of injection molding, the melted
material to form the soft rubber sleeve 121 flows to the hard part
125 and is connected with the hard part 125 after being cooled. For
example, the soft rubber sleeve 121 encloses the fixing portion 45
of the hard part 125, so that the step 47 is enclosed by an end
wall of the soft rubber sleeve 121, thus making the connection
between the soft rubber sleeve 121 and the hard part 125 stable.
Further, melted soft rubber flows into the positioning groove 482,
and after the soft rubber solidifies and hardens, the connection
between the soft rubber sleeve 121 and the hard part 125 is more
stable. The hard part 125 cannot escape from the soft rubber sleeve
121 easily. The soft rubber sleeve 121 is made of a soft rubber
material, so that the soft rubber sleeve 121 can bend and deform.
The hard part 125 can be made of a hard rubber material or metal
material, as long as the hard part 125 can hardly deform.
[0106] Two positioning holes 54 are formed in the connecting
portion 48, neither of the positioning holes 54 communicates with
the through hole 49. The positioning holes 54 are used for being
fixedly connected with the support 13. During installation,
opposite ends of the bending and shaping member 122 extend out of
the through hole 49, the connecting portion 48 extends into a
connecting end of the support 13, opposite end faces of the support
13 and the soft rubber sleeve 121 abut against each other, and an
outer surface of the soft rubber sleeve 121 and an outer surface of
the support 13 are connected in a smooth transition mode. With this
arrangement, when the flexible connector is bent, a gap between the
soft rubber sleeve 121 and the support 13 will not be enlarged so
that the product looks more attractive, and the situation that the
connecting portion 48 is separated from the soft rubber sleeve 121
and the support 13 falls off can be avoided. It should be
understood that since the soft rubber sleeve 121 itself is made of
a bendable and deformable soft rubber material, in other
embodiments, the flexible connector 12 may not be provided with the
bending and shaping member 122, so the through hole 49 may not be
provided, and instead, the user may directly bend the soft rubber
sleeve 121 to realize the bending deformation of the neck fan.
[0107] It should also be understood that in the above embodiments,
the flexible connector is applied to a neck fan, and in other
embodiments, the flexible connector of the present disclosure can
also be applied to other products such as neck massagers and
earphones.
[0108] To sum up, in the flexible connector provided by the present
embodiment, the hard parts are arranged at opposite two ends of the
soft rubber sleeve through injection molding, the fixing parts of
the hard parts are embedded in the ends of the soft rubber sleeve,
so that the ends of the soft rubber sleeve enclosing the fixing
parts are hardly bent and deformed, which effectively prevents the
situation that after the flexible connector is connected with
external components through the connecting portion, when the
flexible connector is bent, gaps are formed between the two ends of
the soft rubber sleeve and the external components. The present
embodiment also provides a neck fan with the flexible connector,
and the neck fan further comprises supports connected to opposite
two ends of the flexible connector. By arranging the hard parts at
opposite two ends of the soft rubber sleeve through injection
molding, when the flexible connector is bent, no gap appears
between the soft rubber sleeve and an end face of the support,
which makes the product look more attractive.
Embodiment 10
[0109] As shown in FIG. 30 to FIG. 34, a portable blowing device
provided in Embodiment 10 of the present disclosure can be put on
the neck of the human body, and comprises a body 10 and fans 20
arranged in the body 10. The fan 20 is preferably a centrifugal fan
(turbofan).
[0110] In the present embodiment, the body 10 is C-shaped or
U-shaped, and is adapted to the radian of the neck of the human
body. The body 10 comprises a first support 11, a second support
13, and a flexible connector 12 connecting the first support 11
with the second support 13. A plurality of fans 20 are arranged in
each of the first support 11 and the second support 13, for
example, two fans 20 or three fans can be arranged in each of the
first support 11 and the second support 13 to increase the airflow
output of the portable blowing device. The flexible connector 12 is
provided with a bending and shaping member 122 inside, and the
bending and shaping member 122 is, for example, a shaping hose, so
that the flexible connector 12 can maintain its bent shape after
being bent.
[0111] Further, the first support 11 and the second support 13 of
the body 10 are each provided with a receiving chamber 101, an air
channel 102, an air inlet 103 and air outlets 104 corresponding to
each fan 20, that is, each fan 20 has a receiving chamber 101, an
air channel 102, an air inlet 103 and air outlets 104 corresponding
thereto. The receiving chamber 101 is used for receiving the fan
20, and the receiving chamber 101 communicates with the air channel
102 and the air inlet 103. A side wall of the air channel 102 is
provided with the air outlets 104, and the airflow generated by the
fan 20 passes through the air channel 102 and then blows out from
the air outlets 104. In the present embodiment, the air channels
102 of the first support 11 and the second support 13 are
independent from each other and do not communicate with each other.
The air inlets 103 are arranged on the inner and outer side walls
of the first support 11 and the second support 13, and the air
outlets 104 are arranged on the upper and lower side walls of the
air channels 102. The air outlets 104 are elongated-shaped.
Preferably, the width of the air outlets increases toward the fan
20, so as to increase the airflow speed at positions of the air
outlets 103 away from the fan 20.
[0112] Further, the body 10 is provided with an air guiding member
14 in each air channel 102, and the air guiding member 14 is
connected to the inner and outer side walls of the air channel 102
and thus divides the air channel 102 into a first air channel 102a
and a second air channel 102b. The side walls of the first air
channel 102a and the second air channel 102b are both provided with
air outlets 104, and the airflow generated by the fan 20 is guided
to the air outlets 104 in the upper and lower side walls of the air
channel 102 through the air guiding member 14. The air guiding
member 14 comprises a first guiding plate 141 and a second guiding
plate 142, one ends of the first guiding plate 141 and the second
guiding plate 142 close to the fan 20 are connected with each
other, and the other ends of the first guiding plate 141 and the
second guiding plate 142 away from the fan 20 are connected to the
side walls of the air channel 102. The first guiding plate 141 is
used to define the shape of the first air channel 102a, so that the
first air channel 102a is gradually enlarged from an end away from
the fan 20 toward the fan 20, and the second guiding plate 142 is
used to define the shape of the second air channel 102b, so that
the second air channel 102b is gradually enlarged from an end away
from the fan 20 toward the fan 20. Thus, the airflow generated by
the fan 20 is gradually compressed after entering the first air
channel 102a and the second air channel 102b, forming an air
squeeze effect, whereby a strengthened airflow is generated at the
air outlets 103 away from the fan 20.
[0113] Further, referring to FIG. 33, the air guiding member 14 is
of a V-shaped structure or Y-shaped structure, and both the first
guiding plate 141 and the second guiding plate 142 are curved. The
first guiding plate 141 bends toward the side away from the second
guiding plate 142, and the second guiding plate 142 bends toward
the side away from the first guiding plate 141. The volume of the
first air channel 102a is smaller than that of the second air
channel 102b, that is, the proportion of the first air channel 102a
in the air channel 102 is smaller than the proportion of the second
air channel 102b in the air channel 102. A curved guide vane 150 is
arranged in the second air channel 102b. The guide vane 150 is bent
away from the second guiding plate 142. An end of the guide vane
150 close to the fan 20 is higher than an end of the guide vane 150
away from the fan 20. That is, the distance between the end of the
guide vane 150 close to the fan and the lower side wall of the
support is greater than that between the end of the guide vane 150
away from the fan and the lower side wall of the support. The two
sides of the guide vane 150 in the width direction closely contact
with the inner walls of the second air channel 102b, and the guide
vane 150 is configured to divide/guide the airflow in the second
air channel 102b to prevent all the airflow from flowing out from
the air outlets of the second air channel 102b close to the fan. In
other embodiments, the guide vane 150 can also be implemented as a
straight plate, and the end of the guide vane 150 close to the fan
20 is higher than the end of the guide vane 150 away from the fan
20, that is, the end of the guide vane 150 away from the fan 20 is
closer to the bottom wall of the air channel 102 than the end close
to the fan 20.
[0114] In the present embodiment, the portable blowing device
further comprises a battery 50, and a wind shield 16 and a
receiving cavity 107 are further arranged in the body 10, wherein
the wind shield 16 separates the air channel 102 from the receiving
cavity 107, and the battery 50 is arranged in the receiving cavity
107 and electrically connected with the fan 20. The air guiding
member 14 is arranged perpendicular to the major surface of the
wind shield 16. One side of the wind shield 16 facing the air
channel 102 is provided with an airflow guiding slot 161, and
preferably, the guiding slot 161 gradually becomes larger from an
end away from the fan 20 toward the fan 20.
[0115] Further, the first support 11 comprises a first outer
housing 11a and a first inner housing 11b, and the second support
13 comprises a second outer housing 13a and a second inner housing
13b. In the present embodiment, the receiving cavity 107 is located
between the wind shield 16 and the outer housings (the first outer
housing 11a and the second outer housing 13a), and the battery 50
is disposed in the receiving cavity 107.
[0116] In the present embodiment, both the first support 11 and the
second support 13 of the body 10 are provided with arc-shaped
separators 17 (FIG. 33). The separators 17 are arranged between two
adjacent fans 20 in each housing (the first support 11 and the
second support 13) and configured to separate the air channels 102
corresponding to the two adjacent fans 20. The separators 17 serve
as side walls of the receiving chambers 101 corresponding to the
fans 20 away from the end of the housing. In other embodiments, the
separator 17 may be formed in a plate shape or other shapes.
Specifically, as shown in FIG. 33, taking the first support 11 as
an example, the two fans 20 are respectively arranged in the two
receiving chambers 101, and the separator 17 is used to separate
the receiving chamber 101 of one fan 20 from the air channel 102 of
the other fan 20, that is, to separate the air channels 102 of the
two fans 20. Preferably, the air guiding member 14 in one of the
air channels 102 is connected with the separator 17 to form an
integral structure, so that one ends of the first guiding plate 141
and the second guiding plate 142 of the air guiding member 14 away
from the fan 20 are indirectly connected with the upper and lower
side walls of the air channel 102 through the separator 17, and the
separator 17 is arranged close to one of the fans 20 and bends
toward the fan 20. Of course, in other embodiments, the ends of the
first guiding plate 141 and the second guiding plate 142 of the air
guiding member 14 away from the fan 20 can also be directly
connected with the upper and lower side walls of the air channel
102. A cavity 106 is formed between the first air channel 102a and
the second air channel 102b, and the cavity 106 is spaced apart
from the first air channel 102a and the second air channel 102b.
The cavity 106 can effectively absorb and restrain the noise caused
by the airflow generated by the fan 20 hitting the air guiding
member 14.
[0117] Further, the portable blowing device comprises a circuit
board 55. A switch button 18 configured for controlling the fan 20
is arranged on the body 10. The circuit board 55 is electrically
connected with the fan 20, the battery 50 and the switch button 18.
In the present embodiment, the switch button 18 is arranged on the
first support 11, and the circuit board 55 is arranged between the
two wind shields 16. The switch button 18 is used to control the
start and stop of the fan 20 and the airflow speed. In the present
embodiment, the portable blowing device is also provided with an
indicator light (not shown), a charging interface (not shown),
etc., which will not be described in detail here.
Embodiment 11
[0118] FIG. 35 is a side view of a first inner housing of a
portable blowing device according to the Embodiment 11 of the
present disclosure. As shown in FIG. 35, a portable blowing device
provided in the present embodiment is basically the same as the
portable blowing device in Embodiment 10 (shown in FIG. 30 to FIG.
34), except that in the present embodiment, the first support 11
and the second support 13 are each provided with only one fan 20,
and one receiving chamber 101, one air channel 102, one air guiding
member 14, one guide vane 150 and one wind shield 16 corresponding
to the fan 20. The inner and outer side walls of the receiving
chamber 101 are provided with air inlets 103, and the upper and
lower side walls of the air channel 102 are provided with air
outlets 104. In the present embodiment, the first support 11 and
the second support 13 need not be provided with the separators
17.
Embodiment 12
[0119] As shown in FIG. 36 to FIG. 38, a portable blowing device
provided in the present embodiment is basically the same as the
portable blowing device in Embodiment 10 (as shown in FIG. 30 to
FIG. 34). In the present embodiment, the portable blowing device
also comprises a first support 11, a second support 13 and a
connector 12 connecting the first support 11 with the second
support 13, except that the first support 11 and the second support
13 are each provided with only one fan 20, and one receiving
chamber 101, one air channel 102, one air guiding member 14, one
guide vane 150 and one wind shield 16 corresponding to the fan 20.
The inner and outer side walls of the receiving chamber 101 are
provided with air inlets 103, the air channel 102 is divided into a
first air channel 102a and a second air channel 102b by the air
guiding member 14, the side walls of the first air channel 102a and
the second air channel 102b are both provided with air outlets 104.
The first support 11 comprises a first outer housing 11a and a
first inner housing lib, and the second support 13 comprises a
second outer housing 13a and a second inner housing 13b. In the
present embodiment, the air guiding members 14 in the first support
11 and the second support 13 are respectively assembled and fixed
to the first inner housing 11b and the second inner housing 13b
(i.e., the side wall of the air channel 102), and the split design
facilitates the molding and manufacturing of the first inner
housing 11b, the second inner housing 13b and the air guiding
members 14. Specifically, the air guiding member 14 further
comprises a connecting plate 143 connecting the first guiding plate
141 with the second guiding plate 142, wherein the connecting plate
143 is generally triangular and fixed to the inner side wall of the
first inner housing 11b/the second inner housing 13b (i.e., the
side wall of the air channel 102), and the first guiding plate 141
and the second guiding plate 142 extend perpendicularly from
opposite side edges of the connecting plate 143 and are sandwiched
between the two side walls of the air channel 102. Preferably, the
ends of the first guiding plate 141 and the second guiding plate
142 facing the fan 20 are connected to form a V-shape. In the
direction away from the fan 20, the first guiding plate 141 extends
obliquely toward the upper side wall of the first support 11 and
the second guiding plate 142 extends obliquely toward the lower
side wall of the first support 11, and the distance between the
first guiding plate 141 and the second guiding plate 142 increases
gradually in the direction away from the fan 20. In this way, the
first air channel 102a and the second air channel 102b both have a
tapered structure in the airflow direction (i.e., in the direction
away from the fan 20), which facilitate to form a squeezing effect
on the airflow, so that the airflow can have a higher airflow speed
and greater air pressure at the air outlets 103.
[0120] Further, the inner side wall of the first inner housing
11b/second inner housing 13b is provided with a positioning stud
18, the connecting plate 143 is correspondingly provided with a
positioning hole 19, and the positioning stud 18 is inserted in the
positioning hole 19 to thereby position the connecting plate 143 on
the inner side wall of the first inner housing 11b/second inner
housing 13b. In the present embodiment, the first guiding plate 141
and the second guiding plate 142 of the air guiding member 14 each
comprise two sections, one section is integrally formed
with/connected to the inner side wall of the first inner housing
11b/the second inner housing 13b, that is, the section away from
the fan 20 is integrally formed with/connected to the inner side
wall of the first inner housing 11b/the second inner housing 13b,
and the other section is connected to the connecting plate 143.
Specifically, the tail ends of the sections of the first guiding
plate 141 and the second guiding plate 142 near the fan 20 are
provided with L-shaped locking parts 145, and the starting ends of
the sections of the first guiding plate 141 and the second guiding
plate 142 away from the fan 20 are provided with L-shaped locking
grooves 146, and the L-shaped locking parts 145 are respectively
locked in the L-shaped locking grooves 146 to thereby form the
completed first guiding plate 141 and the completed second guiding
plate 142, namely the air guiding member 14.
[0121] Referring to FIG. 36, in the present embodiment, the axial
center of the fan 20 and the center of the receiving chamber 101
are eccentrically arranged with a gap 105 formed between the fan 20
and the side wall of the receiving chamber 101. The gap 105 is
C-shaped and gradually widens in the rotating direction of the fan
20. The gap 105 has opposite two openings at both ends thereof. In
the present embodiment, the rotating direction of the fan 20 as
shown in FIG. 36 is clockwise, and a larger one of openings of the
gap 105 faces the first air channel 102a. The airflow generated by
the fan 20 blows obliquely toward the lower side wall of the air
channel 102, that is, the airflow generated by the fan 20 tends to
flow into the second air channel 102b, but the airflow generated by
the fan 20 arrives at the first air channel 102a firstly and then
arrives at the second air channel 102b. The volume of the first air
channel 102a is designed to be smaller than that of the second air
channel 102b, so that the air intake volume of the first air
channel 102a is equal to that of the second air channel 102b.
[0122] In the present embodiment, the first support 11 and the
second support 13 are respectively rotatably connected with
opposite ends of the connector 12 through rotating structures, that
is, the first support 11 and the second support 13 can rotate
relative to the connector 12 to adjust the width between the first
support 11 and the second support 13, so that the user can easily
put on the portable blowing device or remove the portable blowing
device from the neck of the human body. The connector 12 is also
provided with a semiconductor temperature control device which
comprises a heat sink 51 arranged in the connector 12, a heat
conducting member 52 arranged on the inner side wall of the
connector 12, a semiconductor refrigeration sheet 53 mounted
between the heat sink 51 and the heat conducting member 52, and a
cooling fan 54 arranged at one end of the heat sink 51. More
specifically, the inner side wall of the connector 12 defines an
opening 55 corresponding to the heat sink 51. A mounting enclosure
56 is mounted to the opening 55. The mounting housing 56 can be
fixed to the inner side wall of the connector 12 through
interlocking means or the like. The mounting enclosure 56 is
provided with a mounting recess 57 for receiving the semiconductor
refrigeration sheet 53. The heat conducting member 52 is in an arc
shape adapted to the neck of the human body, and the heat
conducting member 52 is connected to one side of the mounting
enclosure 56 away from the heat sink 51, for example, through
interlocking means or the like. The heat sink 51 comprises a
connecting plate and a plurality of cooling fins extending from the
connecting plate in a direction away from the semiconductor
refrigeration sheet 53, wherein the plurality of cooling fins are
arranged at intervals, and a radiating groove is formed between two
adjacent cooling fins. In the length direction, one end of the
connecting plate extends beyond the cooling fins, the cooling fan
54 is at least partially located on the other end of the connecting
plate, and an air outlet of the cooling fan 54 faces the radiating
groove to cool the cooling fins. After installation, a cold end
face of the semiconductor refrigeration sheet 53 is attached to the
heat conducting member 52, and a hot end face of the semiconductor
refrigeration sheet 53 is attached to the connecting plate of the
heat sink 51. Heat dissipation holes 58 and air inlets 59
respectively corresponding to the heat sink 51 and the cooling fan
54 are formed on the outer side wall of the connector 12. Heat
accumulated at the heat sink 51 is dissipated from the heat
dissipation holes 58, and air enters the cooling fan 54 through the
air inlets 59.
[0123] In order to further stabilize the accurate positioning of
the semiconductor temperature control device and its components, a
mounting hole 61 is formed in the connecting plate, a through hole
is formed in the inner side wall of the connector 12 and a screw
hole is formed in the mounting housing 5. A screw is passed through
the mounting hole 61 and the through hole of the connector 12 to be
fixed in the screw hole of the mounting housing 56, so that the
heat sink 51 and the mounting housing 56 are fixed to the connector
12. The inner side wall of the connector 12 is also provided with a
positioning piece 62, and the positioning piece 62 abuts against a
side edge of the cooling fan 54 to install and position the cooling
fan 54, so that the cooling fan 54 can be stably installed.
[0124] Preferably, a decorative ring 63 is arranged on a peripheral
wall of the opening 55. When the mounting enclosure 56 is connected
to the connector 12, the decorative ring 63 has a decorative
function to make the product look more attractive.
[0125] Further, partition plates 64 are arranged between the heat
dissipation holes 58 and the air inlets 59, and the partition
plates 64 are located between the heat sink 51 and the cooling fan
54. The partition plate 64 has a blocking function and can prevent
the heat from the heat sink 51 from returning to the air inlets of
the cooling fan 54 and affect heat dissipation. In addition, the
partition plates 64 also coordinate with the positioning piece 62
to position the cooling fan 54, so that the cooling fan 54 is
clamped between the positioning piece 62 and the partition plates
64 stably.
[0126] Specifically, the rotating structure comprises a first
connecting member 71 and a second connecting member 72, one ends of
the first connecting member 71 and the second connecting member 72
cooperate with each other through a pivoting structure consisted of
a rotating shaft and a shaft hole to realize rotary connection, and
the other ends are respectively fixedly connected with the
connector 12 and the first support 11/second support 13, for
example, through screws or snap connection means, so that the first
support 11 and the second support 13 can rotate inwardly or
outwardly relative to the connector 12. Specifically, the first
connecting member 71 comprises a first stationary part and two
first pivot parts connected to one end of the first stationary part
and arranged at intervals, wherein the first pivot part is provided
with a shaft hole; and the second connecting member 72 comprises a
second stationary part and a second pivot part connected to one end
of the second stationary part, and the second pivot part is
provided with a shaft hole. During installation, the first
stationary part extends into the end of the connector 12 for being
fixed with the connector 12, the second stationary part extends
into the ends of the first support 11/the second support 13 for
fixing therewith, the second pivoting part extends between the two
first pivoting parts, and a rotating shaft is inserted into the
shaft hole, thereby realizing rotary connection between the first
connecting member 71 and the second connecting member 72.
[0127] Preferably, the rotating structure further comprises a
damping member for increasing the frictional resistance of the
first support 11/second housing 12 when the first support 11/second
support 12 rotating relative to the connector 12, and enabling the
first support 11/second support 13 to stay at any rotating position
stably relative to the connector 12, thereby preventing the first
support 11/second support 13 from rotating relative to the
connector 12 arbitrarily (without external force). In the
illustrated embodiment, the damping member is a damping ring 74.
There are two damping rings 74 which are respectively sandwiched
between the second pivot part and the two first pivot parts.
[0128] Since the joint of the first connecting member 71 and the
second connecting member 72 is exposed from the connector 12 and
the first housing 11/second support 13, in order to ensure the
aesthetic appearance of the product, in the illustrated embodiment,
the rotating structure is enclosed with a silicone sleeve 75, and
opposite ends of the silicone sleeve 75 are connected with the ends
of the first support 11 and the second support 12 respectively. As
the silicone sleeve 75 is made of a soft material, it will be
elastically deformed along with the rotation of the rotating
structure, so it will not affect the rotation of the rotating
structure. The outer surfaces of opposite ends of the silicone
sleeve 75 can be configured to be in smooth transition with the
outer surfaces of the first body 14 and the second body 16, so as
to enhance the aesthetic appearance of the product. Preferably,
some grooves 76 facilitating deformation of the silicone sleeve 75
may be formed on the silicone sleeve 75, so that the silicone
sleeve 75 is more easily bent and deformed along with the
deformation of the rotating structure when the rotating structure
rotates.
[0129] In the present embodiment, metal sheets 111 are respectively
installed on the side walls of the receiving chamber 101
corresponding to both sides of the fan 20, and the air inlets 103
are air inlet meshes provided on the metal sheets 111, thus
effectively preventing the user's hair from entering the fan
20.
[0130] The above-mentioned embodiments merely represent several
implementations of the present application, and the descriptions
thereof are more specific and detailed, but they shall not be
understood as a limitation on the scope of the present application.
It should be noted that, for those of ordinary skill in the art,
variations and improvements may still be made without departing
from the concept of the present application, and all of which shall
fall into the protection scope of the present application.
Therefore, the scope of protection of the present application shall
be subject to the appended claims.
* * * * *