U.S. patent application number 14/459298 was filed with the patent office on 2016-02-18 for fan shutter device.
The applicant listed for this patent is Asia Vital Components Co., Ltd.. Invention is credited to Mao-Lin Chen, Ming-Yuan Fu, Pei-Su Zhu.
Application Number | 20160047389 14/459298 |
Document ID | / |
Family ID | 55301844 |
Filed Date | 2016-02-18 |
United States Patent
Application |
20160047389 |
Kind Code |
A1 |
Zhu; Pei-Su ; et
al. |
February 18, 2016 |
FAN SHUTTER DEVICE
Abstract
A fan shutter device includes a frame, multiple slats and
multiple sleeves. The frame has a first side and a second side,
each of which is formed with multiple assembling channels, multiple
fixing holes and multiple displacement slots. Each slat has two
extension sections and a connection shaft. Each of two ends of the
connection shaft is formed with a connection socket. Each sleeve
has a pivot pin and a sleeve section. The pivot pin is assembled
and connected in the connection socket. Multiple fixing members are
respectively passed through the fixing holes to directly fix the
sleeves so that the first and second sides are prevented from
deforming in assembling process. The slats are spaced from the
frame by a gap without abrading with or interfering with the frame.
The extension sections are disposed in the displacement slots,
which restrict the rotational angle of the slats.
Inventors: |
Zhu; Pei-Su; (New Taipei
City, TW) ; Chen; Mao-Lin; (New Taipei City, TW)
; Fu; Ming-Yuan; (New Taipei City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Asia Vital Components Co., Ltd. |
New Taipei City |
|
TW |
|
|
Family ID: |
55301844 |
Appl. No.: |
14/459298 |
Filed: |
August 13, 2014 |
Current U.S.
Class: |
415/146 ;
417/423.9 |
Current CPC
Class: |
F04D 25/14 20130101;
F04D 29/4226 20130101 |
International
Class: |
F04D 25/14 20060101
F04D025/14; F04D 29/42 20060101 F04D029/42 |
Claims
1. A fan shutter device for assembling with a fan, the fan shutter
device comprising: a frame having a first side and a second side,
an inlet and an outlet being respectively formed on two faces of
the frame, each of the first and second sides being formed with
multiple assembling channels, multiple fixing holes and multiple
displacement slots; multiple slats disposed between the inlet and
the outlet, each slat having a connection shaft on one side, each
of two ends of the connection shaft being formed with a connection
socket; and multiple sleeves, each sleeve having a pivot pin and a
sleeve section, the pivot pin being assembled and connected in the
connection socket, the sleeve sections being positioned in the
assembling channels, multiple fixing members being respectively
passed through the fixing holes and connected with the sleeve
sections.
2. The fan shutter device as claimed in claim 1, wherein a passage
is formed between the inlet and the outlet and the slats are
disposed in the passage.
3. The fan shutter device as claimed in claim 1, wherein the fixing
holes pass through the first and second sides in communication with
the assembling channels.
4. The fan shutter device as claimed in claim 1, wherein the fixing
holes communicate with rear ends of the assembling grooves.
5. The fan shutter device as claimed in claim 1, wherein the
displacement slots are sector-shaped.
6. The fan shutter device as claimed in claim 5, wherein each slat
has two extension sections at two ends respectively, the extension
sections being oppositely disposed in the displacement slots.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates generally to a fan shutter
device, which will not deform in assembling process. The slats of
the fan shutter device are spaced from the frame by a gap, whereby
the slats can smoothly rotate without abrading with or interfering
with the frame. Also, the manufacturing cost of the fan shutter
device is lower than that of the conventional device.
[0003] 2. Description of the Related Art
[0004] Currently, electronic industries rapidly develop and the
performance of various electronic components is continuously
enhanced. Therefore, the operation/processing speed of the
electronic components has become faster and faster. Moreover, the
operation speed of the internal chipsets of the electronic
components is continuously increased and the number of the chips is
continuously increased. As a result, the heat generated by the
chips in operation has become higher and higher. In the case that
the heat is not quickly dissipated in time, the performance of the
electronic components will be greatly affected and the operation
speed of the electronic components will be lowered. In some more
serious cases, the electronic components may crash or even burn out
due to high heat. Accordingly, it has become a critical topic how
to efficiently dissipate the heat generated by the electronic
components. In general, a cooling fan is often used to dissipate
the heat.
[0005] A conventional axial-flow fan includes a fan frame and a fan
impeller. The fan impeller is rotatably connected in the fan frame.
In operation, the fan impeller of the axial-flow fan is forward
rotated in the fan frame to blow air from one side of the fan
impeller to the other side so as to dissipate the heat generated by
a heat generation component on the other side. The cooling fan is
often applied to a personal computer, a server or the like
system/apparatus for bringing out the heat generated by the
internal electronic components of the system. However, in practice,
such kind of cooling fan often encounters backflow problem. That
is, when the fan fails or is not operated, the external airflow
will flow back into the system through the fan. This leads to
unstableness of the flow field in the system. To solve the backflow
problem of the fan, many manufacturers have developed various
airflow check devices such as a currently often seen shutter-like
windshield structure. A cooling fan including a fan main body is
disclosed. A shutter is mounted on the wind outlet face of the fan
main body. The shutter includes a frame and multiple shutter slats.
Each shutter slat has two protrusions at two ends for directly
fitting in and assembling with the shaft holes formed on the frame.
When the fan main body rotates, a pressure is created to push open
the shutter slats. When the fan main body stops rotating, the
shutter slats are suspended due to gravity. In the suspended state,
the shutter slats are located by the bosses on the frame. However,
when the protrusions of two ends of shutter slat are fitted in the
shaft holes of the frame, the frame is likely to deform. Moreover,
the end faces of the shutter slat will abrade with and interfere
with the inner wall of the frame to increase the resistance against
opening of the shutter slat. As a result, the shutter slats can be
hardly smoothly opened. Furthermore, the bosses of the frame for
locating the shutter slats are disposed on inner sides of the
frame. The cost of the mold for forming the bosses is high.
[0006] According to the above, the conventional cooling fan has the
following shortcomings: [0007] 1. The frame is likely to deform and
the shutter slats can be hardly smoothly opened. [0008] 2. The end
faces of the shutter slat will abrade with and interfere with the
inner wall of the frame. [0009] 3. The cost of the mold is
high.
SUMMARY OF THE INVENTION
[0010] It is therefore a primary object of the present invention to
provide a fan shutter device, which will not deform in assembling
process. The slats of the fan shutter device are spaced from the
frame by a gap, whereby the slats can smoothly rotate without
abrading with or interfering with the frame. Also, the
manufacturing cost of the fan shutter device is lower than that of
the conventional device.
[0011] It is a further object of the present invention to provide
the above fan shutter device, in which the rotational angle of the
slats is restricted so that the slats can be opened by a fixed
angle.
[0012] To achieve the above and other objects, the fan shutter
device of the present invention includes a frame, multiple slats
and multiple sleeves. The frame has a first side and a second side.
An inlet and an outlet are respectively formed on two faces of the
frame. Each of the first and second sides is formed with multiple
assembling channels, multiple fixing holes and multiple
displacement slots. The slats are disposed between the inlet and
the outlet. Each slat has two extension sections at two ends and a
connection shaft on one side. The extension sections are oppositely
disposed in the displacement slots. Each of two ends of the
connection shaft is formed with a connection socket. The sleeves
are assembled with the connection sockets. Each sleeve has a pivot
pin and a sleeve section. The pivot pin is assembled and connected
in the connection socket. The sleeve sections are positioned in the
assembling channels. Multiple fixing members are respectively
passed through the fixing holes and connected with the sleeve
sections. The fixing members are passed through the fixing holes to
directly fix the sleeves so that the first and second sides are
prevented from deforming in assembling process. The slats are
pivotally assembled with the sleeves and spaced from the frame by a
gap, whereby the slats can smoothly rotate without abrading with or
interfering with the frame. Also, the manufacturing cost is
lowered. In addition, the extension sections are disposed in the
displacement slots, which restrict the rotational angle of the
slats. Accordingly, the slats can be opened by a fixed angle.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The structure and the technical means adopted by the present
invention to achieve the above and other objects can be best
understood by referring to the following detailed description of
the preferred embodiments and the accompanying drawings,
wherein:
[0014] FIG. 1 is a perspective assembled view of a preferred
embodiment of the present invention;
[0015] FIG. 2 is a perspective exploded view of the preferred
embodiment of the present invention;
[0016] FIG. 3 is a partially sectional view of the preferred
embodiment of the present invention;
[0017] FIG. 4 is a perspective view of the preferred embodiment of
the present invention, showing the application of the present
invention in one state; and
[0018] FIG. 5 is a perspective view of the preferred embodiment of
the present invention, showing the application of the present
invention in another state.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0019] Please refer to FIGS. 1, 2 and 3. FIG. 1 is a perspective
assembled view of a preferred embodiment of the present invention.
FIG. 2 is a perspective exploded view of the preferred embodiment
of the present invention. FIG. 3 is a partially sectional view of
the preferred embodiment of the present invention. As shown in the
drawings, the fan shutter device 1 of the present invention
includes a frame 2, multiple slats 3 and multiple sleeves 4.
[0020] The frame 2 has a first side 21 and a second side 22. An
inlet 26 and an outlet 27 are respectively formed on two faces of
the frame 2. A passage 28 is defined between the inlet 26 and the
outlet 27. Each of the first and second sides 21, 22 is formed with
multiple assembling channels 23, multiple fixing holes 24 and
multiple displacement slots 25. The assembling channels 23, fixing
holes 24 and displacement slots 25 on the first and second sides
21, 22 are horizontally aligned with each other. The fixing holes
24 pass through the first and second sides 21, 22 in communication
with the assembling channels 23. To speak more specifically, the
fixing holes 24 communicate with rear ends of the assembling
grooves 23. The displacement slots 25 are sector-shaped.
[0021] The slats 3 are disposed in the passage 28 between the inlet
26 and the outlet 27. Each slat 3 has two extension sections 31 at
two ends and a connection shaft 32 on one side. The extension
sections 31 are oppositely disposed in the displacement slots 25.
Each of two ends of the connection shaft 32 is formed with a
connection socket 321.
[0022] The sleeves 4 are assembled with the connection sockets 321.
Each sleeve 4 has a pivot pin 41 and a sleeve section 42. The pivot
pin 41 is assembled and connected in the connection socket 321. The
sleeve sections 42 are placed into the assembling channels 23 of
the first and second sides 21, 22. Accordingly, the sleeve sections
42 are oppositely disposed at the rear ends of the assembling
channels 23 in alignment with the fixing holes 24. Multiple fixing
members 43 are respectively passed through the fixing holes 24 and
connected with the sleeve sections 42.
[0023] Please now refer to FIGS. 2, 4 and 5. FIG. 4 is a
perspective view of the preferred embodiment of the present
invention, showing the application of the present invention in one
state. FIG. 5 is a perspective view of the preferred embodiment of
the present invention, showing the application of the present
invention in another state. The fan shutter device 1 is assembled
with a fan 5. The fan 5 is assembled with the frame 2. When the fan
5 is not operated, the slats 3 are suspended due to gravity to shut
down the passage 28. At this time, the pivot pins 41 of the sleeves
4 are pivotally fitted in the connection sockets 321 of two ends of
the connection shaft 32 of the slats 3. The pivot pin 41 has a
length larger than a length of the internal space of the connection
socket 321. In addition, the sleeve section 42 protrudes from the
assembling channel 23. The fixing member 43 is passed through the
fixing hole 24 and assembled with the sleeve section 42.
Accordingly, the connection shaft 32 is located between the first
and second sides 21, 22 and spaced from the first and second sides
21, 22 by a gap.
[0024] When the fan 5 operates, the airflow is guided from the
inlet 26 of the fan 5 into the passage 28. At this time, the
airflow flows onto the slats 3 to push open the slats 3.
[0025] When the slats 3 are pushed by the airflow, the slats 3 will
rotate around the connection shafts 32. As aforesaid, the pivot
pins 41 of the sleeves 4 are pivotally fitted in the connection
sockets 321 of the connection shaft 32 and the length of the pivot
pin 41 is larger than the length of the internal space of the
connection socket 321 and the sleeve section 42 protrudes from the
assembling channel 23. The fixing members 43 are passed through the
fixing holes 24 and assembled with the sleeve sections 42.
Accordingly, the connection shafts 32 are located between the first
and second sides 21, 22 and spaced from the first and second sides
21, 22 by a gap. Therefore, the slats 3 are spaced from the first
and second sides 21, 22 by a gap. In this case, when the slats 3
are rotated around the connection shafts 32, the slats 3 will not
abrade with or interfere with the first and second sides 21, 22.
Moreover, the sleeves 4, the fixing holes 24 and the fixing members
43 are coaxial with each other so that the fixing members 43 can be
conveniently assembled with the sleeves 4 and the first and second
sides 21, 22 are prevented from deforming in assembling process. In
addition, the cost for the mold can be lowered.
[0026] Furthermore, the two ends of the slat 3 have the extension
sections 31, which are correspondingly disposed in the displacement
slots 25. The displacement slots 25 are sector-shaped. When the
slats 3 are pushed by the airflow to rotate around the connection
shafts 32, the displacement slots 25 restrict the rotational angle
of the slats 3. Accordingly, the slats 3 can be opened by a fixed
angle. According to the above arrangement, the fixing members 43
are passed through the fixing holes 24 to directly fix the sleeves
4 so that the first and second sides 21, 22 are prevented from
deforming in assembling process. The slats 3 are pivotally
assembled with the sleeves 4 and spaced from the frame 2 by a gap,
whereby the slats 3 can smoothly rotate without abrading with or
interfering with the frame 2. Also, the manufacturing cost is
lowered. In addition, the extension sections 31 are disposed in the
displacement slots 25, which restrict the rotational angle of the
slats 3. Accordingly, the slats 3 can be opened by a fixed
angle.
[0027] In conclusion, the fan shutter device 1 of the present
invention is applicable to a fan to overcome the shortcomings of
the conventional device.
[0028] The present invention has been described with the above
embodiments thereof and it is understood that many changes and
modifications in the above embodiments can be carried out without
departing from the scope and the spirit of the invention that is
intended to be limited only by the appended claims.
* * * * *