EP3742465B1 - An air pressure switch, power supply device and e-cigarettes containing the same - Google Patents
An air pressure switch, power supply device and e-cigarettes containing the same Download PDFInfo
- Publication number
- EP3742465B1 EP3742465B1 EP20175278.9A EP20175278A EP3742465B1 EP 3742465 B1 EP3742465 B1 EP 3742465B1 EP 20175278 A EP20175278 A EP 20175278A EP 3742465 B1 EP3742465 B1 EP 3742465B1
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- EP
- European Patent Office
- Prior art keywords
- main body
- protective film
- pressure switch
- air pressure
- supporting element
- Prior art date
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- 230000001681 protective effect Effects 0.000 claims description 106
- 239000003571 electronic cigarette Substances 0.000 claims description 29
- 230000005489 elastic deformation Effects 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000001960 triggered effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 241000208125 Nicotiana Species 0.000 description 10
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 10
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/53—Monitoring, e.g. fault detection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/51—Arrangement of sensors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/245—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by the deformation of a body of elastic material
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/10—Devices using liquid inhalable precursors
Description
- This application claims priority to
Chinese Patent Application No. 2019207154653, filed on May 16, 2019 - The present invention relates to an air pressure switch of electronic cigarette, a power supply device using the air pressure switch, and an electronic cigarette using the power supply device.
- 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.
- 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.
CN 208676373 U relates to a pneumatic sensor and an electronic cigarette using the pneumatic sensor. - The main purpose of present invention 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.
- In order to achieve the above object, the present invention provides an air pressure switch according to independent claim 1. The air pressure switch comprises, among other features, a main body 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. 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.
- 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.
- Various embodiments of and various improvements to the air pressure switch are recited in the dependent claims.
- Preferably, the first cavity is an airtight cavity.
- 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.
- Preferably, the area enclosed by inner ring surface of said supporting element is larger than the area of said sensing area.
- Preferably, the area enclosed by the sensing area and said inner ring surface forms a circle; the diameter range of said sensing area is 2mm- 3mm, and the diameter range of said inner ring surface of supporting element is 2mm-6mm.
- Preferably, the diameter of said sensing area is 2.5mm, and the diameter of inner ring surface of said support is 3mm-5mm.
- Preferably, the thickness of protective film at said elastic deformation region is 0.03mm-0.5mm.
- Preferably, the supporting element is integrally formed with said protective film.
- 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.
- 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;
- 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.
- 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.
- 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.
- 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.
- 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.
- The present invention 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.
- 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.
- 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.
- The present invention 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.
- 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.
- 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.
- Preferably, at least one air inlet is directly opposite to the sensing airway of said power supply device.
- 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.
- The air pressure switch in the technical solution of present invention 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.
- 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 invention, 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.
-
Fig. 1 is a schematic sectional view of the connection structure of air pressure switch in the present invention; -
Fig. 2 is a schematic view of local magnification on A inFig. 1 of the present invention; -
Fig. 3 is an exploded view of connection structure of air pressure switch in the present invention; -
Fig. 4 is a schematic cross-sectional view of connection structure of air pressure switch in another embodiment of the present invention; -
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; -
Fig. 6 is a cross-sectional view of a connection structure of electronic cigarette described in the present invention. - Definition of reference numbers:
Reference number Name Reference number Name 100 Air pressure switch 35 Conductive ring 10 Main body 40 First cavity 11 First surface 50 Protective film 111 Air vent 51 Supporting element 12 Second outer peripheral surface 511 Sealing part 13 Inner cavity 512 Adhesive layer 30 Trigger component 52 Elastic deformation region 31 Conductive sheet 60 Compressing ring 311 Air hole 200 Power supply device 32 Floating diaphragm 210 Sensing airway 33 Circuit board 300 Atomizing device 331 Air compensating vent 310 Air inlet 34 Insulation ring 320 Heating component - The realization of the objects, functional characteristics and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the drawings.
- The technical solutions in the embodiments of present invention will be clearly and completely described as below with reference to drawings in the embodiments of present invention. Obviously, any described embodiment is only a part of embodiments of present invention, but not all of them. Based on the embodiments of present invention, 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 invention.
- It should be noted that any directional indication (such as up, down, left, right, front, and back) in the embodiment of present invention 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.
- In addition, the descriptions related to "first", "second", etc. in the present invention 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 invention.
- In the present invention, 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.
- The present invention provides an
air pressure switch 100; saidair pressure switch 100 is used in electronic cigarettes or other devices triggered by sensing airflow changes. The present invention takes an electronic cigarette as the example. This electronic cigarette comprises an atomizing device with preloadedtobacco juice 300 and apower supply device 200 providing power for saidatomizing device 300. Saidpower supply device 200 is provided withsensing airway 210; said air pressure switch is installed inside saidpower supply device 200 and establishes an electrical connection with saidpower supply device 200. The sensing area of saidair pressure switch 100 is at least partially exposed inside saidsensing airway 210 for sensing the air pressure switch inside saidsensing airway 210. Saidatomizing device 300 is installed in saidpower supply device 200 and establishes an electrical connection with saidpower supply device 200. Saidatomizing device 300 is provided with at least oneair inlet 310; when theatomization device 300 is installed in saidpower supply device 200, said at least oneair inlet 310 communicates with saidsensing airway 210. When the user sucks, the airflow inside thesensing airway 210 will flow out and enter theatomizing device 300 through theair 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 thesensing airway 210 and trigger saidair pressure switch 100 to transmit the signal to thepower supply device 200, which will control theheating element 320 inside theatomizing device 300 to generate heat and atomize pre-stored tobacco juice for users to smoke. - Refer to
Fig. 1 to Fig. 6 , theair pressure switch 100 comprises amain body 10; saidmain body 10 is provided with a sensing area, which will be triggered under negative pressure. It is characterized in that saidair pressure switch 100 further comprises a flexibleprotective film 50; saidprotective film 50 is installed on saidmain body 10 and at least the outer surface of saidmain body 10 where sensing area is provided is airtight covered, so that afirst cavity 40 enclosed by saidprotective film 50 and said surface of sensing area provided by themain body 10 is formed; saidprotective film 50 deforms away from saidmain body 10 under the external suction force, so that the airflow in saidfirst cavity 40 can partially flow into the space generated by the deformation of saidprotective film 50. - The
air pressure switch 100 in the technical solution of present invention does not need the dust-proof cloth covering outside of the sensing area like in traditionalair 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, aprotective film 50 is provided to airtightly cover the sensing area provided on themain body 10 ofair 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 theair pressure switch 100 through said sensing area, resulting in the damage oftrigger component 30. At the same time, saidprotective film 50 is flexible and forms afirst cavity 40 with the side ofair pressure switch 100'smain body 10 with sensing area; when the user sucks, theprotective film 50 will be attracted and deforms away from said air pressure switch 100 'smain body 10. The space between the deformedprotective film 50 and saidmain body 10 will increase. Since theprotective film 50 airtight-covers the sensing area to make the airflow value in saidfirst cavity 40 constant, a negative pressure will be generated to trigger said sensing area when the volume offirst cavity 40 increases, making the electronic cigarette work normally. - Specifically, as shown in
Fig. 1 orFig. 3 , in the embodiment of the present invention, the main body10 is provided with aninner cavity 13 and anair vent 111, and saidmain body 10 is provided with atrigger component 30 in saidinner cavity 13. Saidair vent 111 communicates with both saidinner cavity 13 and the outside, so that the airflow inside theinner cavity 13 may flow out through saidair vent 111 and said air vent can form said sensing area on the surface of saidmain body 10. Saidprotective film 50 airtight-covers the surface of said main body10 with saidair vent 111. When the user sucks, a negative pressure will be generated by the withdrawn of airflow from inside of saidsensing airway 210, so that saidprotective film 50 can deform away from saidmain body 10 under the external suction force. At this point, thefirst cavity 40 between theprotective film 50 and themain body 10 increases; theprotective film 50 airtightly bonds with themain body 10, so that the volume of air flow in thefirst cavity 40 and theinner cavity 13 can be constant. When the volume offirst cavity 40 increase, the air flow in theinner cavity 13 will compensate into the space generated by the deformation offirst cavity 40, decreasing the air pressure switch. Therefore, thetrigger component 30 in theinner cavity 13 is under negative pressure and will be triggered 30. - Specifically, as shown in
Fig. 1 to Fig. 4 , in the embodiment of the present invention, saidtrigger component 30 comprises aconductive sheet 31, a floatingdiaphragm 32, and acircuit board 33 that are sequentially arranged in theinner cavity 13 from the side close to saidair vent 111 to the side far from saidair vent 111; saidconductive sheet 31 electrically connects to saidcircuit board 33 and is provided with at least oneair hole 311 communicating with saidair vent 111. When the user sucks, the airflow inside theinner cavity 13 will compensate into thefirst cavity 40 through saidair hole 311 and saidair vent 111. In the meantime, the floatingdiaphragm 32 will swing towards saidconductive sheet 31 under the action of airflow, then partly contact with or separate from saidconductive sheet 31 to transmit electrical signals generated by saidconductive sheet 31 to thecircuit board 33. - Specifically, as shown in
Fig. 1 to Fig. 3 , in the embodiment of the present invention, the mechanism of said electronic signal generation can be the electrostatic charge generated by friction; for example, said floatingdiaphragm 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 saidconductive sheet 31, and transmit it to thecircuit board 33 throughconductive sheet 31. At the same time, the principle of said electronic signal generation may also be a conductive electrical loop; for example, the floatingdiaphragm 32 is a film made of conductive material, and saidmain body 10 further comprises aconductive ring 35 and ainsulation ring 34. Saidconductive ring 35 locates between said floatingdiaphragm 32 and thecircuit board 33, and electrically connects to said floatingdiaphragm 32 and saidcircuit board 33; saidinsulation ring 34 locates between said floatingdiaphragm 32 and saidconductive sheet 31 to separate them. When the user sucks, the floatingdiaphragm 32 deforms under the action of airflow to connect with saidconductive sheet 31 at the hollow part in the middle of theinsulation ring 34, so that theconductive sheet 31 and theconductive ring 35 can make a loop to generate electrical signal. - Furthermore, as shown in
Fig. 1 orFig. 4 , in the embodiment of the present invention, in order to facilitate the vibration of floatingdiaphragm 32, anair compensating vent 331 communicating with the outside is provided on the side ofcircuit board 33 facing towards said floatingdiaphragm 32. When the floatingdiaphragm 32 moves toward theconductive sheet 31 under negative pressure, the external airflow can enter themain body 10 through theair compensating vent 331 to make the floatingdiaphragm 32 deform or unsymmetrically vibrate. Of course, the location of saidair compensating vent 331 is not limited on thecircuit board 33; for example, it is on the second outerperipheral surface 12 to compensate air into theinner cavity 40 ofmain body 10 on the side of floatingdiaphragm 32 away form saidconductive sheet 31. This method is also fall in the protection scope of the present invention. - Furthermore, as shown in
Fig. 1 to Fig. 4 , in the embodiment of present invention, theprotective film 50 should be prevented from tightly contacting with saidmain body 10, which result in insensitive trigger due to lack of deformation of theprotective film 50 during drawing. In this embodiment, a supportingelement 51 is provided between saidprotective film 50 and themain body 10. When theprotective film 50 is installed on themain body 10, both sides of said supportingelement 51 will abut against the outer surface of saidmain body 10 and the surface of saidprotective film 50 facing towards themain body 10 respectively to make a space between theprotective film 50 and themain body 10, which will prevent certain friction or electrostatic absorption between these two, resulting in that theprotective film 50 cannot trigger saidtrigger component 30 during suction due to lack of deformation. At the same time, thefirst cavity 40 formed between saidprotective film 50 and saidmain body 10 has a certain original volume for storing a certain amount of air, which makes theprotective film 50 more prone to deformation and reduces the effect of temperature on air pressure switch at the same time. - Specifically, said
trigger component 30 uses model S087 trigger components, and it is a micro-pneumatic sensing component with -400pa trigger accuracy. To prevent false triggering caused by air pressure switch changes due to temperature, in this embodiment, a program is installed on thecircuit board 33. Saidconductive sheet 31 and the floatingdiaphragm 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 switch value, so that the false triggering caused by the expansion of airflow due to the ambient temperature can be effectively prevented. - Furthermore, said supporting
element 51 is a ring shape; the area enclosed by the inner ring surface of supportingelement 51 is larger than or equal to the opening area of theair vent 111, so that saidair vent 111 is accommodated in the area enclosed by the inner surface of supportingelement 51 and the art of protective film covered 50 uncovered by the supportingelement 51 can cross the outer side of saidair vent 111 to form anelastic deformation region 52 when theprotective film 50 is installed on themain body 10. Wherein, because the area enclosed by the inner ring surface of supportingelement 51 is larger than or equal to the opening area of said air vent, the supportingelement 51 and theprotective film 50 completely cover saidair vent 111 when theprotective film 50 is installed on themain body 10. - 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 theprotective film 50 to increase the size of space generated after the deformation. In this embodiment, theelastic deformation region 52 of saidprotective film 50 is the area enclosed by the inner ring surface of said supportingelement 51, so that its trigger accuracy can be further improved due to the larger inner ring surface of said supportingelement 51. Furthermore, when the distance between the outer ring surface and the inner ring surface of said supportingelement 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 saidmain body 10 are matched to maximize the space created after deformation of theprotective 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 supportingelement 51 are all designed as round shape. - Specifically, said
main body 10 is a cylindrical shape and its cross-sectional diameter is 6mm. Thefirst surface 11 of saidmain body 10 is provided with saidair vent 111 to form said sensing area. The diameter range ofair vent 111 is 2mm-3mm, and its opening area accounts for one third to one half area of saidfirst surface 11, so that the air flow ofinner cavity 13 can quickly flow into thefirst cavity 40 from theair vent 111 and generate negative pressure to trigger thetrigger component 30 when the deformation of theprotective film 50 occurs under the action of suction force. - Specifically, the diameter of said
air vent 111 is 2.5mm; at this time, the distance between saidmain body 10 and the outer edge of saidair vent 111 is 1.75mm, which will limit the position of thetrigger component 30 inside theinner cavity 13 to prevent theinternal trigger component 30 from crushing thefirst surface 11 when the suction force is too large. - Specifically, in this embodiment, said
protective film 50 and said supportingelement 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 offirst surface 11 ofmain body 10, then process a groove at the position corresponding to saidair vent 111, and its diameter will be larger than or equal to that of saidair vent 111; the thickness of bottom wall of the groove should be thin and tends to deform to form theelastic deformation region 52; the outer edge of the groove should be thicker to form the supportingelement 51. - Furthermore, in order to prevent the
elastic deformation region 52 from locating at the end of the supportingelement 51, which tends to scratch during cleaning, both sides of base layer of saidprotective film 50 can be provided with grooves simultaneously during production, so that theelastic deformation region 52 can formed in the middle of inner ring surface of said supportingelement 51 to produce a certain height difference from the outer end of said supportingelement 51 to prevent scratch. - Furthermore, in order to prevent uncompleted covering on the sensing area when the
protective film 50 is installed on themain body 10, in this embodiment, the diameter range of inner ring surface of said supportingelement 51 is set to 2mm-6mm, so that the area enclosed by the inner ring surface of supportingelement 51 is larger than or equal to the opening area of saidair vent 111, andair vent 111 can be completely surrounded by the inner ring surface of said supportingelement 51 when theprotective film 50 is installed on themain body 10, which will prevent external airflow from entering thefirst cavity 40 through the gap between the supportingelement 51 and themain body 10, resulting in fail to trigger. - Furthermore, the thickness of said elastic deformation region is 0.03mm-0.5mm, 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- 3mm, larger deformation will be required to trigger saidtrigger component 30. Therefore, if the specific thickness value matches the strength of material selected for the protective parts, the thinner size of thickness of theelastic deformation region 52, such as 0.03mm-0.09mm, 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 6mm, at this time, theelastic deformation region 52 can trigger said triggeringcomponent 30 under little deformation; therefore, a thickerprotective film 50 can be used, such as theprotective film 50 with the thickness of 0.2mm -0.5mm. - Specifically, as shown in
Fig. 4 , theair pressure switch 100 described in the embodiment of the present invention further comprises acompression ring 60; one end of saidcompression ring 60 is pressed against the side of saidprotective film 50 away from themain body 10, and the other end is sleeved with themain body 10 to prevent theprotective film 50 from tightly pressing against thefirst surface 11 ofmain 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 supportingelement 51 is large enough to facilitate the compression of thecompression ring 60. For example, in this embodiment, the diameter of said inner ring surface is 3mm, and the thickness of single side of the supportingelement 51 is 1.5mm, which can ensure compression of saidcompression ring 60. - It can be understood that, in practical applications, it is not limited for said
protective film 50 to choose the pressing way ofcompression ring 60 mentioned in above embodiment. For example, as shown inFig. 5 , in other embodiments of present invention, the definition is: the surface with the air vent of saidmain body 10 is thefirst surface 11; saidmain body 10 and other surfaces adjacent to saidfirst surface 11 form the second outerperipheral surface 12 of themain body 10. In this embodiment, the outer ring surface of said supportingelement 51 is provided with anextended sealing part 511; this sealingpart 511 and said supportingelement 51 are made of flexible materials and integrated into one piece with certain elasticity; the sealingpart 511 sleeve connects with the second outerperipheral surface 12 ofmain body 10 to fix theprotection film 50, which is also within the protection scope of present invention. This fixing method doesn't need thecompression 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 3.6mm,4mm, etc.; at this time, the thickness ofelastic deformation region 52 is 0.1mm or 0.12mm, which can ensure its better elastic deformability and stronger connection strength to avoid break. As another example, one side of the supportingelement 51 away from saidprotective film 50 can be provided with anadhesive layer 512. When theprotective film 50 is installed on themain body 10, the side with the supportingelement 51 of theprotective film 50 will be tightly pressed on the outer surface ofmain body 10 to make the supportingelement 51 and the surface ofmain 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. - The present invention further provides a
power supply device 200 of electronic cigarette; thepower supply device 200 comprises saidair pressure switch 100 and executes the corresponding command when the sensor of saidpower supply device 200 responding to saidair pressure switch 100 is triggered. Refer to the foregoing embodiments for the specific structure ofair 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. - Specifically, as shown in
Fig. 6 , in the embodiment of present invention, saidair pressure switch 100 is provided with asensing airway 210 communicating with the outside; saidair pressure switch 100 is accommodated in saidpower supply device 200, and thecircuit board 33 inside saidair pressure switch 100 establishes an electrical connection with saidpower supply device 200, so that saidtrigger component 30 can transmit control signals to saidpower supply device 200 through saidcircuit board 33 when saidtrigger component 30 senses the negative pressure. The side of saidair pressure switch 100 withprotective film 50 faces towards the side of saidsensing airway 210 communicating with the outside, so that theprotective film 50 can deform under the action of suction force. At the same time, in order to ensure the trigger accuracy, saidair pressure switch 100 can be installed in thesensing airway 210, and the outer surface of saidair pressure switch 100 is airtightly abutted against the inner wall of sensingairway 210, so that the air flow cannot be sucked out from the gap between theair pressure switch 100 and theinduction airway 210 when the user sucks, which will avoid small suction force on theprotective file 50. - The present invention further provides an electronic cigarette, which comprises an
atomizing device 300 and apower supply device 200; saidatomizing device 300 is provided with at least oneair inlet 310, and said at least oneair inlet 310 communicates with the inside of saidatomizing device 300 and saidsensing airway 210. When the user sucks, the airflow in thesensing airway 210 can be sucked out to trigger saidair pressure switch 100. - Specifically, in order to ensure the airflow in the
sensing airway 210 is sucked into saidair inlet 310 in time, in this embodiment, said at least oneair inlet 310 is directly opposite to thesensing airway 210, so that the airflow in saidsensing airway 210 can be preferentially sucked out when the user sucks, thereby increasing the sensitivity of trigger. - Specifically, in this embodiment, said
atomizing device 300 further includesmultiple air inlets 310. For example, the atomizer is provided with twoair inlets 310; one ofair inlets 310 is provided on the side of saidatomizing device 300 and communicates with the outside, which is mainly used to provide working airflow for atomization inside the atomizer. Anotherair inlet 310 can be provided at the bottom ofatomizing device 300 and directly face towards thesensing airway 210 provided on saidpower supply device 200, so that the airflow in thesensing airway 210 facing towards theair inlet 310 can be sucked out to generate a suction force on theprotective film 50 of said pneumatic airway switch when the user sucks and make it deform to produce negative pressure for triggering the sensing area. - Specifically, in order to prevent the
air inlet 310 directly facing saidsensing airway 210 from sucking the airflow from other place as well as from thesensing airway 210, resulting in less suction force in thesensing airway 210 and lack of triggering to saidair pressure switch 100, in this embodiment, a sealed air guiding tube is used. One end of tube is inserted into theair inlet 310, and the other end is inserted into thesensing airway 210, so that the suction force generated by theair inlet 310 when the user sucks can only suck out the air flow through thesensing airway 210 to ensure the trigger sensitivity ofair pressure switch 100. - 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 airway21 0 respectively. For example, the outer edge of sensingairway 210 or one ofair inlets 310 can be in a higher level, so that the outer edges ofair inlets 310 andsensing airway 210 are abutted against each other when theatomizing device 300 is installed in thepower supply device 200 to ensure the airflow sucked into theair inlet 310 is only from saidsensing airway 210. This method is also fall in the protection scope of present invention.
Claims (14)
- An air pressure switch (100) of an electronic cigarette, wherein the air pressure switch (100) comprises:a main body (10) that comprises an outer surface (11) and a sensing area, wherein the sensing area is triggered by negative pressure; anda flexible protection film (50) installed on the main body (10) and at least a portion of the outer surface of the main body (10) where the sensing area is provided, wherein a first cavity (40) is formed and enclosed by the protective film (50) and the outer surface of the main body where the sensing area is provided;wherein the protective film (50) deforms away from the main body (10) under an external suction force, so that the airflow in the first cavity (40) can partially flow into the space generated by the deformation of the protective film (50);characterized in that either the protective film (50) or the main body (10) includes a supporting element (51), wherein the protective film (50) is installed on the main body, two sides of the supporting element (51) respectively abut against the outer surface of the main body (10), and a surface of the protective film (50) face towards the main body (10), so that the protective film (50) and the main body (10) are arranged at an interval
- The air pressure switch (100) of claim 1, wherein the first cavity (40) is an airtight cavity.
- The air pressure switch (100) of claim 1, wherein the supporting element 2. (51) comprises a ring shape and the area enclosed by inner ring surface of the supporting element (51) 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 (51) when the protective film (50) is installed on the main body (10), and the protective film (50) that is not covered by the supporting element (51) forms an elastic deformation region.
- The air pressure switch (100) of claim 3, wherein the area enclosed by inner ring surface of the supporting element (51) is larger than the area of the sensing area
- The air pressure switch (100) of claim 3, wherein the supporting element (51) is integrally formed with the protective film (50).
- The air pressure switch (100) of claim 5, wherein the support element (51) is formed on the surface of the protective film (50) facing towards the main body (10), or the protective film (50) is formed on the inner ring surface of the support element (51).
- The air pressure switch (100) of claim 5, wherein:the main body (10) includes a first surface (11) and other surfaces adjacent to the first surface (11), and other surfaces encircles to form a second outer surface (12) of main body (10);the sensing area locates on the first surface (11), and the supporting element (51) and the protective film (50) are sequentially arranged outside the first surface (11); andthe outer ring surface of the supporting element (51) includes a sealing part (511) that is elastically and tightly sleeved on the second outer peripheral surface (12).
- The air pressure switch (100) of claim 3, wherein the air pressure switch (100) further includes a compression ring (60); one end of the compression ring (60) is pressed against the edge of the protective film (50) away from the main body (10), and the other end is sleeved with the main body (10), in order to press the edge of the protective film (50) against the main body. body (10).
- The air pressure switch (100) of electronic cigarette as in claim 3, wherein the side of the supporting member (51) away from the protective film (50) includes an adhesive layer (512); wherein the supporting element (51) is installed on the main body (10), and the adhesive layer (512) tightly bonds the outer surface of the main body (10) and the supporting element (50).
- The air pressure switch (100) of claim 1, wherein the main body (10) includes an inner cavity (13), an air vent (111), and a trigger component (30) in the inner cavity (13), wherein the trigger component (30) is triggered under negative pressure, wherein the air vent (111) communicates with the outside to form the sensing area, wherein when the outside forms negative pressure, the airflow in the inner cavity (13) is configured to flow out through the air vent (111).
- The air pressure switch (100) of claim 10, wherein the trigger component (30) comprises a conductive sheet (31), a floating diaphragm (32), and a circuit board (33) that are sequentially arranged from the side close to the air vent (111) to the side far from the air vent (111), wherein the circuit board (33) electrically connects to the conductive sheet (31), and the conductive sheet (31) includes at least one air hole (311) communicating with the air vent (111), wherein the floating diaphragm (32) contacts with and separates from the conductive sheet (31) under air flow, wherein the conductive sheet (31) is configured to generate an electrical signal.
- A power supply device (200) for electronic cigarettes, the power supply device (200) comprising the air pressure switch (100) according to any of claims 1-11, wherein the power supply device (200) further comprises a sensing airway (210) communicating with the outside, wherein a side of the air pressure switch (100) with protective film (50) exposes to the sensing airway (210).
- The power supply device (200) of claim 12, wherein the air pressure switch (100) is accommodated in the sensing airway (210), and the side of the air pressure switch (100) with protective film (50) faces the side of responsive airway (210) communicating with outside wherein the outer peripheral surface of the air pressure switch (100) seal-abuts against the sensing airway (210).
- An electronic cigarette, wherein the electronic cigarette comprises the power supply device (200) according to claim 12 or 13.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920715465.3U CN210869865U (en) | 2019-05-16 | 2019-05-16 | Pneumatic switch of electron cigarette, power supply unit and electron cigarette of electron cigarette |
Publications (2)
Publication Number | Publication Date |
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EP3742465A1 EP3742465A1 (en) | 2020-11-25 |
EP3742465B1 true EP3742465B1 (en) | 2022-10-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20175278.9A Active EP3742465B1 (en) | 2019-05-16 | 2020-05-18 | An air pressure switch, power supply device and e-cigarettes containing the same |
Country Status (3)
Country | Link |
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US (1) | US20200359697A1 (en) |
EP (1) | EP3742465B1 (en) |
CN (1) | CN210869865U (en) |
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KR102637144B1 (en) * | 2021-06-23 | 2024-02-16 | 주식회사 케이티앤지 | Aerosol generating device and method of operation thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101945923B1 (en) * | 2014-06-17 | 2019-02-08 | 가부시키가이샤 사기노미야세이사쿠쇼 | Sensor Unit Having a Sensor Chip and Pressure Detection Device Containing same |
CN208676373U (en) * | 2018-07-05 | 2019-04-02 | 深圳市艾维普思科技有限公司 | Pneumatic transmitter and electronic cigarette |
CN109717519B (en) * | 2019-03-13 | 2021-07-27 | 常州市派腾电子技术服务有限公司 | Electronic cigarette |
-
2019
- 2019-05-16 CN CN201920715465.3U patent/CN210869865U/en active Active
-
2020
- 2020-05-14 US US15/931,853 patent/US20200359697A1/en not_active Abandoned
- 2020-05-18 EP EP20175278.9A patent/EP3742465B1/en active Active
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CN210869865U (en) | 2020-06-30 |
US20200359697A1 (en) | 2020-11-19 |
EP3742465A1 (en) | 2020-11-25 |
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