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.

What is claimed is: 
     
         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.