U.S. patent application number 15/931853 was filed with the patent office on 2020-11-19 for air pressure switch, power supply device, and e-cigarettes containing the same.
The applicant listed for this patent is HONG KONG IVPS INTERNATIONAL LIMITED. Invention is credited to Junwei OUYANG.
Application Number | 20200359697 15/931853 |
Document ID | / |
Family ID | 1000004858998 |
Filed Date | 2020-11-19 |
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United States Patent
Application |
20200359697 |
Kind Code |
A1 |
OUYANG; Junwei |
November 19, 2020 |
AIR PRESSURE SWITCH, POWER SUPPLY DEVICE, AND E-CIGARETTES
CONTAINING THE SAME
Abstract
The present utility model discloses an air pressure switch, a
power supply device using this air pressure switch, and an
electronic cigarette using this power supply device. The air
pressure switch includes a main body that includes a sensing area
that will be triggered under negative pressure. The air pressure
switch further includes a flexible protection film installed on the
main body and at least the outer surface of the main body where
sensing area is provided so that a first cavity is enclosed by the
protective film and the surface of the main body where the sensing
area is provided and formed. The protective film deforms away from
the main body under the external suction force, so that the airflow
in the first cavity can partially flow into the space generated by
the deformation of the protective film.
Inventors: |
OUYANG; Junwei; (Shenzhen,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HONG KONG IVPS INTERNATIONAL LIMITED |
Central |
|
HK |
|
|
Family ID: |
1000004858998 |
Appl. No.: |
15/931853 |
Filed: |
May 14, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A24F 40/53 20200101 |
International
Class: |
A24F 40/53 20060101
A24F040/53 |
Foreign Application Data
Date |
Code |
Application Number |
May 16, 2019 |
CN |
201920715465.3 |
Claims
1. An air pressure switch of an electronic cigarette, wherein the
air pressure switch comprises: a main body that comprises an outer
surface and a sensing area, wherein the sensing area is triggered
by negative pressure; and a flexible protection film installed on
the main body and at least a portion of the outer surface of the
main body where the sensing area is provided, wherein a first
cavity is formed and enclosed by the protective film and the outer
surface of the main body where the sensing area is provided;
wherein the protective film deforms away from the main body under
an external suction force, so that the airflow in the first cavity
can partially flow into the space generated by the deformation of
the protective film.
2. The air pressure switch of claim 1, wherein the first cavity is
an airtight cavity.
3. The air pressure switch of claim 1, wherein either the
protective film or the main body includes a supporting element,
wherein the protective film is installed on the main body, and two
sides of the supporting element are respectively abutted against
the outer surface of the main body and a surface of the protective
film facing towards the main body, so that the protective film and
the main body are arranged at an interval.
4. The air pressure switch of claim 3, wherein the supporting
element comprises a ring shape and the area enclosed by inner ring
surface of the supporting element is larger than or equal to the
area of the sensing area, wherein the sensing area is accommodated
in the area enclosed by the inner annular surface of the supporting
element when the protective film is installed on the main body, and
the protective film that is not covered by the supporting element
forms an elastic deformation region.
5. The air pressure switch of claim 4, wherein the area enclosed by
inner ring surface of the supporting element is larger than the
area of the sensing area.
6. The air pressure switch of claim 4, wherein the area enclosed by
the sensing area and the inner ring surface forms a circle, wherein
the diameter range of the sensing area is 2 mm-3 mm, and the
diameter range of the inner ring surface of support element is 2
mm-6 mm.
7. The air pressure switch of claim 6, wherein the diameter of the
sensing area is 2.5 mm, and the diameter of inner ring surface of
the supporting element is 3 mm-5 mm.
8. The air pressure switch of claim 4, wherein the thickness of the
protective film at the elastic deformation region is 0.03 mm-0.5
mm.
9. The air pressure switch of claim 4, wherein the supporting
element is integrally formed with the protective film.
10. The air pressure switch of claim 9, wherein the support element
is formed on the surface of the protective film facing towards the
main body, or the protective film is formed on the inner ring
surface of the support element.
11. The air pressure switch of claim 9, wherein: the main body
includes a first surface and other surfaces adjacent to the first
surface, and other surfaces encircles to form a second outer
surface of main body; the sensing area locates on the first
surface, and the supporting element and the protective film are
sequentially arranged outside the first surface; and the outer ring
surface of the supporting element includes a sealing part that is
elastically and tightly sleeved on the second outer peripheral
surface.
12. The air pressure switch of claim 4, wherein the air pressure
switch further includes a compression ring, wherein one end of the
compression ring is pressed against the edge of the protective film
away from the main body, and the other end is sleeved with the main
body, in order to press the edge of the protective film against the
main body.
13. The air pressure switch of electronic cigarette as the in claim
4, wherein the side of the supporting member away from the
protective film includes an adhesive layer, wherein the supporting
element is installed on the main body, and the adhesive layer
tightly bonds the outer surface of the main body and the supporting
element.
14. The air pressure switch of claim 1, wherein the main body
includes an inner cavity, an air vent, and a trigger component in
the inner cavity, wherein the trigger component is triggered under
negative pressure, wherein the air vent communicates with the
outside to form the sensing area, wherein when the outside forms
negative pressure, the airflow in the inner cavity is configured to
flow out through the air vent.
15. The air pressure switch of claim 14, wherein the trigger
component comprises a conductive sheet, a floating diaphragm, and a
circuit board that are sequentially arranged from the side close to
the air vent to the side far from the air vent, wherein the circuit
board electrically connects to the conductive sheet, and the
conductive sheet is includes at least one air hole communicating
with the air vent, wherein the floating diaphragm contacts with and
separates from the conductive sheet under air flow, wherein the
conductive sheet is configured to generate an electrical
signal.
16. A power supply device for electronic cigarettes, the power
supply device comprising: an air pressure switch comprising: a main
body that comprises an outer surface and a sensing area, wherein
the sensing area is triggered by negative pressure; and a flexible
protection film installed on the main body and at least a portion
of the outer surface of the main body where the sensing area is
provided, wherein a first cavity is formed and enclosed by the
protective film and the outer surface of the main body where the
sensing area is provided; wherein the protective film deforms away
from the main body under an external suction force, so that the
airflow in the first cavity can partially flow into the space
generated by the deformation of the protective film. wherein the
air pressure switch is accommodated in the power supply device and
establishes an electrical connection with the power supply device;
and a sensing airway communicating with the outside, wherein air
pressure switch a side of the air pressure switch with protective
film exposes to the sensing airway.
17. The power supply device of claim 16, wherein the air pressure
switch is accommodated in the sensing airway, and the side of the
air pressure switch with protective film faces the side of
responsive airway communicating with outside, wherein the outer
peripheral surface of the air pressure switch seal-abuts against
the sensing airway.
18. An electronic cigarette comprising: an atomizing device; and a
power supply device used to supply power to the atomizing device,
wherein the power supply device includes: an air pressure switch
that includes a main body that comprises an outer surface and a
sensing area, wherein the sensing area is triggered by negative
pressure; and a flexible protection film installed on the main body
and at least a portion of the outer surface of the main body where
the sensing area is provided, wherein a first cavity is formed and
enclosed by the protective film and the outer surface of the main
body where the sensing area is provided; wherein the protective
film deforms away from the main body under an external suction
force, so that the airflow in the first cavity can partially flow
into the space generated by the deformation of the protective film.
wherein the air pressure switch is accommodated in the power supply
device and establishes an electrical connection with the power
supply device; and a sensing airway communicating with the outside,
wherein a side of the air pressure switch with protective film
exposes to the sensing airway.
19. The electronic cigarette of claim 18, wherein the atomizing
device includes at least one air inlet that communicates with the
internal airway of the atomizing device and the sensing airway.
20. The electronic cigarette of claim 18, wherein the atomizing
device includes at least two air inlets, wherein the atomizing
device is installed in the power supply device, wherein one of the
at least two air inlets communicates with outside, wherein an
airtight airway is formed between the other air inlet and the
sensing airway so that the airflow in the sensing airway only flows
out through the air inlet.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to Chinese Patent
Application No. 201920715465.3, filed on May 16, 2019. The
disclosure of the foregoing application is incorporated herein by
reference in its entirety.
TECHNICAL FIELD
[0002] The present utility model relates to an air pressure switch
of electronic cigarette, a power supply device of electronic
cigarette using the air pressure switch, and an electronic
cigarette using the power supply device.
BACKGROUND
[0003] With the gradual development of the electronic cigarette
industry, small electronic cigarettes are getting more and more
popular with consumers. In order to reduce the size of product, an
air pressure switch is usually used to sense user's suction for
triggering, so that the electronic cigarette can atomizes stored
tobacco juice into smoke for the user.
[0004] However, the air pressure switch needs to communicate with
the suction airway of electronic cigarette, so that it can be
triggered when the user smokes. During long time smoking, the
stored tobacco juice and the condensed water generated from
atomization process will accumulate inside the electronic cigarette
cavity. However, a piece of dust-proof cloth is usually provided on
the surface of air pressure switch of electronic cigarette, which
tends to absorb the tobacco juice and the condensed water,
resulting in decrease of sensitivity and even lead to short circuit
damage.
SUMMARY
[0005] The main purpose of present utility model is to provide an
air pressure switch designed to prevent tobacco juice and condensed
water from penetrating into the air pressure switch, resulting in
damage of the air pressure switch.
[0006] In order to achieve the above object, the present utility
model provides an air pressure switch, comprising a main body; the
main body is provided with a sensing area, which will be triggered
when said sensing area is under negative pressure. Said air
pressure switch further includes a flexible protective film; said
protective film is installed on said main body and at least the
outer surface of said main body where sensing area is provided is
airtight covered, so that a first cavity enclosed by said
protective film and said surface of said main body where the
sensing area is provided is formed.
[0007] Said protective film deforms away from said main body under
the external suction force, so that the airflow in said first
cavity can partially flow into the space generated by the
deformation of said protective film.
[0008] Preferably, the first cavity is an airtight cavity.
[0009] Preferably, either the protective film or said main body is
provided with a supporting member; when said protective film is
installed on said main body, two sides of said supporting element
are respectively abutted against the outer surface of said main
body and the surface of said protective film facing towards the
main body, so that said protective film and said main body are
arranged at interval.
[0010] Preferably, the supporting element is in a ring shape, and
the area enclosed by inner ring surface of said supporting element
is larger than or equal to the area of said sensing area, so that
the sensing area is accommodated in the area enclosed by the inner
annular surface of said supporting element when said protective
film is installed on said main body, and the protective film
uncovered by said supporting element forms an elastic deformation
region.
[0011] Preferably, the area enclosed by inner ring surface of said
supporting element is larger than the area of said sensing
area.
[0012] Preferably, the area enclosed by the sensing area and said
inner ring surface forms a circle; the diameter range of said
sensing area is 2 mm-3 mm, and the diameter range of said inner
ring surface of supporting element is 2 mm-6 mm.
[0013] Preferably, the diameter of said sensing area is 2.5 mm, and
the diameter of inner ring surface of said support is 3 mm-5
mm.
[0014] Preferably, the thickness of protective film at said elastic
deformation region is 0.03 mm-0.5 mm.
[0015] Preferably, the supporting element is integrally formed with
said protective film.
[0016] Preferably, the supporting element is formed on the surface
of said protective film facing towards said main body; or said
protective film is formed on the inner ring surface of said
supporting element.
[0017] Preferably, said main body is provided with a first surface
and other surfaces adjacent to said first surface, and said other
surfaces encircles to form a second surface of main body. Said
sensing area locates on said first surface, and said supporting
element and said protective film are sequentially arranged outside
the first surface.
[0018] the outer ring surface of said supporting element is further
extendedly provided with a sealing part, and said sealing part is
elastically and tightly sleeved on said second outer peripheral
surface.
[0019] Preferably, said air pressure switch further includes a
compression ring; one end of said compression ring is pressed
against the edge of said protective film away from said main body,
and the other end is sleeved with said main body, in order to press
the edge of said protective film against said main body.
[0020] Preferably, the side of said support member away from said
protective film is further provided with an adhesive layer. When
said supporting element is installed on said main body, said
adhesive layer tightly bonds the outer surface of said main body
and said supporting element.
[0021] Preferably, said main body is provided with an inner cavity
and an air vent. Said main body is provided with a trigger
component in said inner cavity, and said trigger component is
triggered under negative pressure; said air vent communicates with
the outside to form said sensing area. When the outside forms
negative pressure, the airflow in said inner cavity may flow out
through said air vent.
[0022] Preferably, said trigger component comprises a conductive
sheet, a floating diaphragm, and a circuit board that are
sequentially arranged from the side close to said air vent to the
side far from said air vent; said circuit board electrically
connects to said conductive sheet, and said conductive sheet is
provided with at least one air hole communicating with said air
vent; said floating diaphragm connects to/separates from said
conductive sheet under air flow, so that said conductive sheet can
generate electrical signal.
[0023] The present utility model also provides a power supply
device of electronic cigarette, including an air pressure switch of
electronic cigarette. Said power supply device is provided with a
sensing airway communicating with the outside. Said air pressure
switch is accommodated in said power supply device and establishes
an electrical connection with said power supply device; the side of
said air pressure switch with protective film exposes to the
sensing airway. Wherein, said air pressure switch includes a main
body; said main body is provided with a sensing area, which will be
triggered when said sensing area is under negative pressure. Said
air pressure switch further includes a flexible protective film;
said protective film is installed on said main body and at least
the outer surface of said main body where sensing area is provided
is airtight covered, so that a first cavity enclosed by said
protective film and said surface of sensing area provided by the
main body is formed.
[0024] Said protective film deforms away from said main body under
the external suction force, so that the airflow in said first
cavity partially can flow into the space generated by the
deformation of said protective film.
[0025] Preferably, the air pressure switch is accommodated in the
sensing airway; a side of said air pressure switch provided with a
protective film faces the side of sensing airway communicating with
outside; the outer of said air pressure switch seal-abuts against
said sensing airway.
[0026] The present utility model further provides an electronic
cigarette, including an atomizing device and a power supply device
of electronic cigarette; said power supply device is used to supply
power to said atomizing device. Wherein, said power supply device
of electronic cigarette includes an air pressure switch of
electronic cigarette. Said power supply device is provided with a
sensing airway communicating with the outside. Said air pressure
switch is accommodated in said power supply device and establishes
an electrical connection with said power supply device; the side of
said air pressure switch with protective film exposes to the inside
of sensing airway. Wherein, said air pressure switch includes a
main body; said main body is provided with a sensing area, which
will be triggered when said sensing area is under negative
pressure. Said air pressure switch further includes a flexible
protective film; said protective film is installed on said main
body and at least the outer surface of said main body where sensing
area is provided is airtight covered, so that a first cavity
enclosed by said protective film and said surface of sensing area
provided by the main body is formed.
[0027] Said protective film deforms away from said main body under
the external suction force, so that the airflow in said first
cavity partially can flow into the space generated by the
deformation of said protective film.
[0028] Preferably, said atomizing device is provided with at least
one air inlet, and said at least one air inlet communicates with
the internal air circuit of said atomizing device and said sensing
airway.
[0029] Preferably, at least one air inlet is directly opposite to
the sensing airway of said power supply device.
[0030] Preferably, the atomizing device includes at least two air
inlets; when said atomizing device is installed in said power
supply device, one of said at least two air inlets communicates
with outside, and a closed air channel is formed between the other
air inlet and the sensing airway, so that the air flow in said
sensing airway can only flow out through said air vent.
[0031] The air pressure switch in the technical solution of present
utility model does not need the dust-proof cloth covering outside
of sensing area like in traditional air pressure switch, it will
effectively prevent tobacco juice and condensed water from being
absorbed by the dust-proof cloth which is hard to clean. At the
same time, a protective film is provided to airtightly cover the
sensing area provided on the main body of air pressure switch,
which can effectively prevent accumulation of tobacco juice and
condensed water in the sensing area during the long-term use and
prevent from penetrating into the air pressure switch through said
sensing area, resulting in damage of trigger component. At the same
time, said protective film is flexible and forms a first cavity
with the side of air pressure switch with sensing area; when the
user sucks, the protective film will be attracted and deforms away
from said air pressure switch. The space between the deformed
protective film and said main body will increase. Since the
protective film airtight-covers said sensing area to make the
airflow value in said first cavity constant, a negative pressure
will be generated to trigger said sensing area when the volume of
first cavity increases, making the electronic cigarette work
normally.
DESCRIPTION OF DRAWINGS
[0032] For a more complete understanding of the present invention,
or the technical schemes in the prior art, the drawings in the
embodiments or the description of the prior art are briefly
introduced. Obviously, the drawings in the following description
are only some embodiments of the present utility model, it will be
apparent to those skilled in the art from this disclosure that
other drawings may be easily obtained from these drawings without
paying any creative effort.
[0033] FIG. 1 is a schematic sectional view of the connection
structure of air pressure switch in the present utility model;
[0034] FIG. 2 is a schematic view of local magnification on A in
FIG. 1 of the present utility model;
[0035] FIG. 3 is an exploded view of connection structure of air
pressure switch in the present utility model;
[0036] FIG. 4 is a schematic cross-sectional view of connection
structure of air pressure switch in another embodiment of the
present utility model;
[0037] FIG. 5 is a schematic cross-sectional view of connection
structure, in which the sealing portion provided by the protective
film is sleeved on the main body;
[0038] FIG. 6 is a cross-sectional view of a connection structure
of electronic cigarette described in the present utility model.
DEFINITION OF REFERENCE NUMBERS
TABLE-US-00001 [0039] Reference number Name 100 Air pressure switch
10 Main body 11 First surface 111 Air vent 12 Second outer
peripheral surface 13 Inner cavity 30 Trigger component 31
Conductive sheet 311 Air hole 32 Floating diaphragm 33 Circuit
board 331 Air compensating vent 34 Insulation ring 35 Conductive
ring 40 First cavity 50 Protective film 51 Supporting element 511
Sealing part 512 Adhesive layer 52 Elastic deformation region 60
Compressing ring 200 Power supply device 210 Sensing airway 300
Atomizing device 310 Air inlet 320 Heating component
[0040] The realization of the objects, functional characteristics
and advantages of the present utility model will be further
described in conjunction with the embodiments and with reference to
the drawings.
DETAILED DESCRIPTION
[0041] The technical solutions in the embodiments of present
utility model will be clearly and completely described as below
with reference to drawings in the embodiments of present utility
model. Obviously, any described embodiment is only a part of
embodiments of present utility model, but not all of them. Based on
the embodiments of present utility model, any other embodiment
obtained by a person of ordinary skill in the art without any
creative efforts shall be within the protection scope of this
present utility model.
[0042] It should be noted that any directional indication (such as
up, down, left, right, front, and back) in the embodiment of
present utility model is only used to explain the relative
positional relationship and movement of components in a specific
posture (as shown in drawings). If such specific posture changes,
the directional indication will change accordingly.
[0043] In addition, the descriptions related to "first", "second",
etc. in the present utility model are for descriptive purposes
only, and cannot be understood as any indication or implication of
its relative importance or implicit indication of the number of
technical features. Therefore, any feature defined as "first" or
"second" may explicitly or implicitly include at least one of
features. In addition, any technical solutions in various
embodiments can be combined with each other but must be realized by
a person of ordinary skill in the art. When such combination of
technical solutions shows conflicts or cannot be achieved, it
should be considered as nonexistent and will not be within the
protection scope claimed by this present utility model.
[0044] In the present utility model, the terms of "connected" and
"fixed" shall be understood in a broad sense unless otherwise
specified and defined; for example, "fixed" may be a fixed
connection, a detachable connection, or an integral one; It can be
a mechanical connection or an electrical connection; it also can be
directly connected or indirectly connected through an intermediate
medium; it also can be an internal connection of two elements or an
interaction relationship between two elements, unless it is clearly
defined otherwise. For those of ordinary skill in the art, they can
explain specific meanings of above terms in the present invention
according to the specific situation.
[0045] The present utility model provides an air pressure switch
100; said air pressure switch 100 is used in electronic cigarettes
or other devices triggered by sensing airflow changes. The present
utility model takes an electronic cigarette as the example. This
electronic cigarette comprises an atomizing device with preloaded
tobacco juice 300 and a power supply device 200 providing power for
said atomizing device 300. Said power supply device 200 is provided
with sensing airway 210; said air pressure switch is installed
inside said power supply device 200 and establishes an electrical
connection with said power supply device 200. The sensing area of
said air pressure switch 100 is at least partially exposed inside
said sensing airway 210 for sensing the air pressure inside said
sensing airway 210. Said atomizing device 300 is installed in said
power supply device 200 and establishes an electrical connection
with said power supply device 200. Said atomizing device 300 is
provided with at least one air inlet 310; when the atomization
device 300 is installed in said power supply device 200, said at
least one air inlet 310 communicates with said sensing airway 210.
When the user sucks, the airflow inside the sensing airway 210 will
flow out and enter the atomizing device 300 through the air inlet
310. At this time, the sensing area of air pressure switch can
sense the negative pressure generated by the air's flowing out of
the sensing airway 210 and trigger said air pressure switch 100 to
transmit the signal to the power supply device 200, which will
control the heating element 320 inside the atomizing device 300 to
generate heat and atomize pre-stored tobacco juice for users to
smoke.
[0046] Refer to FIG. 1 to FIG. 6, the air pressure switch 100
comprises a main body 10; said main body 10 is provided with a
sensing area, which will be triggered under negative pressure. It
is characterized in that said air pressure switch 100 further
comprises a flexible protective film 50; said protective film 50 is
installed on said main body 10 and at least the outer surface of
said main body 10 where sensing area is provided is airtight
covered, so that a first cavity 40 enclosed by said protective film
50 and said surface of sensing area provided by the main body 10 is
formed; said protective film 50 deforms away from said main body 10
under the external suction force, so that the airflow in said first
cavity 40 can partially flow into the space generated by the
deformation of said protective film 50.
[0047] The air pressure switch 100 in the technical solution of
present utility model does not need the dust-proof cloth covering
outside of the sensing area like in traditional air pressure switch
100, it will effectively prevent tobacco juice and condensed water
from being absorbed by the dust-proof cloth which is hard to clean.
At the same time, a protective film 50 is provided to airtightly
cover the sensing area provided on the main body 10 of air pressure
switch 100; which can effectively prevent accumulation of tobacco
juice and condensed water in the sensing area during long-term use
and prevent from penetrating into the air pressure switch 100
through said sensing area, resulting in the damage of trigger
component 30. At the same time, said protective film 50 is flexible
and forms a first cavity 40 with the side of air pressure switch
100's main body 10 with sensing area; when the user sucks, the
protective film 50 will be attracted and deforms away from said air
pressure switch 10's main body 10. The space between the deformed
protective film 50 and said main body 10 will increase. Since the
protective film 50 airtight-covers the sensing area to make the
airflow value in said first cavity 40 constant, a negative pressure
will be generated to trigger said sensing area when the volume of
first cavity 40 increases, making the electronic cigarette work
normally.
[0048] Specifically, as shown in FIG. 1 or FIG. 3, in the
embodiment of the present utility model, the main body 10 is
provided with an inner cavity 13 and an air vent 111, and said main
body 10 is provided with a trigger component 30 in said inner
cavity 13. Said air vent 111 communicates with both said inner
cavity 13 and the outside, so that the airflow inside the inner
cavity 13 may flow out through said air vent 111 and said air vent
forms said sensing area on the surface of said main body 10. Said
protective film 50 airtight-covers the surface of said main body 10
with said air vent 111. When the user sucks, a negative pressure
will be generated by the withdrawn of airflow from inside of said
sensing airway 210, so that said protective film 50 can deform away
from said main body 10 under the external suction force. At this
point, the first cavity 40 between the protective film 50 and the
main body 10 increases; the protective film 50 airtightly bonds
with the main body 10, so that the volume of air flow in the first
cavity 40 and the inner cavity 13 can be constant. When the volume
of first cavity 40 increase, the air flow in the inner cavity 13
will compensate into the space generated by the deformation of
first cavity 40, decreasing the air pressure. Therefore, the
trigger component 30 in the inner cavity 13 is under negative
pressure and will be triggered 30.
[0049] Specifically, as shown in FIG. 1 to FIG. 4, in the
embodiment of the present utility model, said trigger component 30
comprises a conductive sheet 31, a floating diaphragm 32, and a
circuit board 33 that are sequentially arranged in the inner cavity
13 from the side close to said air vent 111 to the side far from
said air vent 111; said conductive sheet 31 electrically connects
to said circuit board 33 and is provided with at least one air hole
311 communicating with said air vent 111. When the user sucks, the
airflow inside the inner cavity 13 will compensate into the first
cavity 40 through said air hole 311 and said air vent 111. In the
meantime, the floating diaphragm 32 will swing towards said
conductive sheet 31 under the action of airflow, then partly
contact with or separate from said conductive sheet 31 to transmit
electrical signals generated by said conductive sheet 31 to the
circuit board 33.
[0050] Specifically, as shown in FIG. 1 to FIG. 3, in the
embodiment of the present utility model, the mechanism of said
electronic signal generation can be the electrostatic charge
generated by friction; for example, said floating diaphragm 32 is
an insulation diaphragm and vibrates under the action of airflow to
generate electrostatic charge due to the fraction between said
floating diaphragm and said conductive sheet 31, and transmit it to
the circuit board 33 through conductive sheet 31. At the same time,
the principle of said electronic signal generation may also be a
conductive electrical loop; for example, the floating diaphragm 32
is a film made of conductive material, and said main body 10
further comprises a conductive ring 35 and a insulation ring 34.
Said conductive ring 35 locates between said floating diaphragm 32
and the circuit board 33, and electrically connects to said
floating diaphragm 32 and said circuit board 33; said insulation
ring 34 locates between said floating diaphragm 32 and said
conductive sheet 31 to separate them. When the user sucks, the
floating diaphragm 32 deforms under the action of airflow to
connect with said conductive sheet 31 at the hollow part in the
middle of the insulation ring 34, so that the conductive sheet 31
and the conductive ring 35 can make a loop to generate electrical
signal.
[0051] Furthermore, as shown in FIG. 1 or FIG. 4, in the embodiment
of the present utility model, in order to facilitate the vibration
of floating diaphragm 32, an air compensating vent 331
communicating with the outside is provided on the side of circuit
board 33 facing towards said floating diaphragm 32. When the
floating diaphragm 32 moves toward the conductive sheet 31 under
negative pressure, the external airflow can enter the main body 10
through the air compensating vent 331 to make the floating
diaphragm 32 deform or unsymmetrically vibrate. Of course, the
location of said air compensating vent 331 is not limited on the
circuit board 33; for example, it is on the second outer peripheral
surface 12 to compensate air into the inner cavity 31 of main body
10 on the side of floating diaphragm 32 away form said conductive
sheet 31. This method is also fall in the protection scope of the
present utility model.
[0052] Furthermore, as shown in FIG. 1 to FIG. 4, in the embodiment
of present utility model, the protective film 50 should be
prevented from tightly contacting with said main body 10, which
result in insensitive trigger due to lack of deformation of the
protective film 50 during drawing. In this embodiment, a supporting
element 51 is provided between said protective film 50 and the main
body 10. When the protective film 50 is installed on the main body
10, both sides of said supporting element 51 will abut against the
outer surface of said main body 10 and the surface of said
protective film 50 facing towards the main body 10 respectively to
make a space between the protective film 50 and the main body 10,
which will prevent certain friction or electrostatic absorption
between these two, resulting in that the protective film 50 cannot
trigger said trigger component 30 during suction due to lack of
deformation. At the same time, the first cavity 40 formed between
said protective film 50 and said main body 10 has a certain
original volume for storing a certain amount of air, which makes
the protective film 50 more prone to deformation and reduces the
effect of temperature on air pressure at the same time.
[0053] Specifically, said trigger component 30 uses model S087
trigger components, and it is a micro-pneumatic sensing component
with -400 pa trigger accuracy. To prevent false triggering caused
by air pressure changes due to temperature, in this embodiment, a
program is installed on the circuit board 33. Said conductive sheet
31 and the floating diaphragm 32 can be used as the sampling ends,
and the electric potential or the amount of charge carried by them
are collected at a certain time interval and defined as the
standard air pressure value, so that the false triggering caused by
the expansion of airflow due to the ambient temperature can be
effectively prevented.
[0054] Furthermore, said supporting element 51 is a ring shape; the
area enclosed by the inner ring surface of supporting element 51 is
larger than or equal to the opening area of the air vent 111, so
that said air vent 111 is accommodated in the area enclosed by the
inner surface of supporting element 51 and the art of protective
film covered 50 uncovered by the supporting element 51 can cross
the outer side of said air vent 111 to form an elastic deformation
region 52 when the protective film 50 is installed on the main body
10. Wherein, because the area enclosed by the inner ring surface of
supporting element 51 is larger than or equal to the opening area
of said air vent, the supporting element 51 and the protective film
50 completely cover said air vent 111 when the protective film 50
is installed on the main body 10.
[0055] Specifically, to ensure the trigger accuracy, the user can
adjust the flexibility of protective film 50 to improve its
deformation or design a larger deformation area on the protective
film 50 to increase the size of space generated after the
deformation. In this embodiment, the elastic deformation region 52
of said protective film 50 is the area enclosed by the inner ring
surface of said supporting element 51, so that its trigger accuracy
can be further improved due to the larger inner ring surface of
said supporting element 51. Furthermore, when the distance between
the outer ring surface and the inner ring surface of said
supporting element 51 is fixed, the larger said outer ring surface,
the larger the area enclosed by said inner ring surface will be. In
this embodiment, said outer ring surface and the outer edge of said
main body 10 are matched to maximize the space created after
deformation of the protective film 50. At the same time, because
the circle area is the largest under the same diameter, said
sensing area and said inner ring surface of supporting element 51
are all designed as round shape.
[0056] Specifically, said main body 10 is a cylindrical shape and
its cross-sectional diameter is 6 mm. The first surface 11 of said
main body 10 is provided with said air vent 111 to form said
sensing area. The diameter range of air vent 111 is 2 mm-3 mm, and
its opening area accounts for one third to one half area of said
first surface 11, so that the air flow of inner cavity 13 can
quickly flow into the first cavity 40 from the air vent 111 and
generate negative pressure to trigger the trigger component 30 when
the deformation of the protective film 50 occurs under the action
of suction force.
[0057] Specifically, the diameter of said air vent 111 is 2.5 mm;
at this time, the distance between said main body 10 and the outer
edge of said air vent 111 is 1.75 mm, which will limit the position
of the trigger component 30 inside the inner cavity 13 to prevent
the internal trigger component 30 from crushing the first surface
11 when the suction force is too large.
[0058] Specifically, in this embodiment, said protective film 50
and said supporting element 51 are made of flexible materials, such
as silica gel, and integrated into one piece to facilitate
processing and producing. The processing method can be: firstly cut
out a base layer matching or larger than the size of first surface
11 of main body 10, then process a groove at the position
corresponding to said air vent 111, and its diameter will be larger
than or equal to that of said air vent 111; the thickness of bottom
wall of the groove should be thin and tends to deform to form the
elastic deformation region 52; the outer edge of the groove should
be thicker to form the supporting element 51.
[0059] Furthermore, in order to prevent the elastic deformation
region 52 from locating at the end of the supporting element 51,
which tends to scratch during cleaning, both sides of base layer of
said protective film 50 can be provided with grooves simultaneously
during production, so that the elastic deformation region 52 forms
in the middle of inner ring surface of said supporting element 51
to produce a certain height difference from the outer end of said
supporting element 51 to prevent scratch.
[0060] Furthermore, in order to prevent uncompleted covering on the
sensing area when the protective film 50 is installed on the main
body 10, in this embodiment, the diameter range of inner ring
surface of said supporting element 51 is set to 2 mm-6 mm, so that
the area enclosed by the inner ring surface of supporting element
51 is larger than or equal to the opening area of said air vent
111, and air vent 111 can be completely surrounded by the inner
ring surface of said supporting element 51 when the protective film
50 is installed on the main body 10, which will prevent external
airflow from entering the first cavity 40 through the gap between
the supporting element 51 and the main body 10, resulting in fail
to trigger.
[0061] Furthermore, the thickness of said elastic deformation
region is 0.03 mm-0.5 mm, which mainly depends on the elastic
deformability of product; at the same time, it also depends on the
area of elastic deformation region 52. It can be understood that,
when the diameter of elastic deformation region 52 (the inner ring
surface of supporting element 51) is small, such as 2-3 mm, larger
deformation will be required to trigger said trigger component 30.
Therefore, if the specific thickness value matches the strength of
material selected for the protective parts, the thinner size of
thickness of the elastic deformation region 52, such as 0.03
mm-0.09 mm, can prevent crack when larger deformation occurs. When
the diameter of elastic deformation region 52 (the inner ring
surface of supporting element 51) is larger, such as 6 mm, at this
time, the elastic deformation region 52 can trigger said triggering
component 30 under little deformation; therefore, a thicker
protective film 50 can be used, such as the protective film 50 with
the thickness of 0.2 mm -0.5 mm.
[0062] Specifically, as shown in FIG. 4, the air pressure switch
100 described in the embodiment of the present utility model
further comprises a compression ring 60; one end of said
compression ring 60 is pressed against the side of said protective
film 50 away from the main body 10, and the other end is sleeved
with the main body 10 to prevent the protective film 50 from
tightly pressing against the first surface 11 of main body 10; at
this time, in order to ensure firm compression, the designed
distance between the outer ring surface and the inner ring surface
of said supporting element 51 is large enough to facilitate the
compression of the compression ring 60. For example, in this
embodiment, the diameter of said inner ring surface is 3 mm, and
the thickness of single side of the supporting element 51 is 1.5
mm, which can ensure compression of said compression ring 60.
[0063] It can be understood that, in practical applications, it is
not limited for said protective film 50 to choose the pressing way
of compression ring 60 mentioned in above embodiment. For example,
as shown in FIG. 5, in other embodiments of present utility model,
the definition is: the surface with the air vent of said main body
10 is the first surface 11; said main body 10 and other surfaces
adjacent to said first surface 11 form the second outer peripheral
surface 12 of the main body 10. In this embodiment, the outer ring
surface of said supporting element 51 is provided with an extended
sealing part 511; this sealing part 511 and said supporting element
51 are made of flexible materials and integrated into one piece
with certain elasticity; the sealing part 511 sleeve connects with
the second outer peripheral surface 12 of main body 10 to fix the
protection film 50, which is also within the protection scope of
present utility model. This fixing method doesn't need the
compression ring 60 to tightly press, so the size of inner ring
surface of the support ring can be further larger, such as its
diameter is 3.6 mm, 4 mm, etc.; at this time, the thickness of
elastic deformation region 52 is 0.1 mm or 0.12 mm, which can
ensure its better elastic deformability and stronger connection
strength to avoid break. As another example, one side of the
supporting element 51 away from said protective film 50 can be
provided with an adhesive layer 512. When the protective film 50 is
installed on the main body 10, the side with the supporting element
51 of the protective film 50 will be tightly pressed on the outer
surface of main body 10 to make the supporting element 51 and the
surface of main body 10 bond tightly, and complete the
installation. This method of bonding makes installation much easier
and can effectively prevent air leakage due to the gap between
them.
[0064] The present utility model further provides a power supply
device 200 of electronic cigarette; the power supply device 200
comprises said air pressure switch 100 and executes the
corresponding command when the sensor of said power supply device
200 responding to said air pressure switch 100 is triggered. Refer
to the foregoing embodiments for the specific structure of air
pressure switch 100. Since the electronic cigarette adopts all
technical solutions described in the foregoing embodiments, it has
at least all benefits brought by technical solutions of foregoing
embodiments. The effects will not be repeated here.
[0065] Specifically, as shown in FIG. 6, in the embodiment of
present utility model, said air pressure switch 100 is provided
with a sensing airway 210 communicating with the outside; said air
pressure switch 100 is accommodated in said power supply device
200, and the circuit board 33 inside said air pressure switch 100
establishes an electrical connection with said power supply device
200, so that said trigger component 30 can transmit control signals
to said power supply device 200 through said circuit board 33 when
said trigger component 30 senses the negative pressure. The side of
said air pressure switch 100 with protective film 50 faces towards
the side of said sensing airway 210 communicating with the outside,
so that the protective film 50 can deform under the action of
suction force. At the same time, in order to ensure the trigger
accuracy, said air pressure switch 100 can be installed in the
sensing airway 210, and the outer surface of said air pressure
switch 100 is airtightly abutted against the inner wall of sensing
airway 210, so that the air flow cannot be sucked out from the gap
between the air pressure switch 100 and the induction airway 210
when the user sucks, which will avoid small suction force on the
protective file 50.
[0066] The present utility model further provides an electronic
cigarette, which comprises an atomizing device 300 and a power
supply device 200; said atomizing device 300 is provided with at
least one air inlet 310, and said at least one air inlet 310
communicates with the inside of said atomizing device 300 and said
sensing airway 210. When the user sucks, the airflow in the sensing
airway 210 can be sucked out to trigger said air pressure switch
100.
[0067] Specifically, in order to ensure the airflow in the sensing
airway 210 is sucked into said air inlet 310 in time, in this
embodiment, said at least one air inlet 310 is directly opposite to
the sensing airway 210, so that the airflow in said sensing airway
210 can be preferentially sucked out when the user sucks, thereby
increasing the sensitivity of trigger.
[0068] Specifically, in this embodiment, said atomizing device 300
further includes multiple air inlets 310. For example, the atomizer
is provided with two air inlets 310; one of air inlets 310 is
provided on the side of said atomizing device 300 and communicates
with the outside, which is mainly used to provide working airflow
for atomization inside the atomizer. Another air inlet 310 can be
provided at the bottom of atomizing device 300 and directly face
towards the sensing airway 210 provided on said power supply device
200, so that the airflow in the sensing airway 210 facing towards
the air inlet 310 can be sucked out to generate a suction force on
the protective film 50 of said pneumatic airway switch when the
user sucks and make it deform to produce negative pressure for
triggering the sensing area.
[0069] Specifically, in order to prevent the air inlet 310 directly
facing said sensing airway 210 from sucking the airflow from other
place as well as from the sensing airway 210, resulting in less
suction force in the sensing airway 210 and lack of triggering to
said air pressure switch 100, in this embodiment, a sealed air
guiding tube is used. One end of tube is inserted into the air
inlet 310, and the other end is inserted into the sensing airway
210, so that the suction force generated by the air inlet 310 when
the user sucks can only suck out the air flow through the sensing
airway 210 to ensure the trigger sensitivity of air pressure switch
100.
[0070] It can be understood that, in practical applications, it is
not limited to use sealed air guiding tube inserted into the air
inlet 310 and the sensing airway 210 respectively. For example, the
outer edge of sensing airway 210 or one of air inlets 310 can be in
a higher level, so that the outer edges of air inlets 310 and
sensing airway 210 are abutted against each other when the
atomizing device 300 is installed in the power supply device 200 to
ensure the airflow sucked into the air inlet 310 is only from said
sensing airway 210. This method is also fall in the protection
scope of present utility model.
[0071] The above is only the preferred embodiment of present
utility model, and is not intended to limit the patent scope of the
utility model. Any equivalent structural transformation made by
using contents of the description and drawings of present utility
model, or directly/indirectly used in other relevant technical
fields under the inventive concept of the present utility model
shall be included within the protection scope of patent of the
present utility model.
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