Patent Application
20200359697
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.
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.
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.
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.
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.
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.
Preferably, the first cavity is an airtight cavity.
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.
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 2 mm-3 mm, and the diameter range of said inner ring surface of supporting element is 2 mm-6 mm.
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.
Preferably, the thickness of protective film at said elastic deformation region is 0.03 mm-0.5 mm.
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 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.
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 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.
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 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.
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.
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.
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.
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.
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.
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.
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.
Refer to
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.
Specifically, as shown in
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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.
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.
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.
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.
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.
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.
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.
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.
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.
Specifically, as shown in
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
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.
Specifically, as shown in
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.
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.
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.
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.
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.
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.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201920715465.3 | May 2019 | CN | national |
