CN216453371U

CN216453371U - Electronic cigarette

Info

Publication number: CN216453371U
Application number: CN202122910651.2U
Authority: CN
Inventors: 李晋阳; 张睿
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-10
Anticipated expiration: 2031-11-24
Also published as: US20230157371A1

Abstract

The utility model provides an electronic cigarette, which comprises a shell, an atomizer, a tobacco tar cavity and an MEMS (micro-electromechanical systems) sensor, wherein the top end of the shell is provided with a smoking port, the atomizer is accommodated in the shell and is arranged at a distance from the smoking port, the tobacco tar cavity is arranged between the atomizer and the smoking port, the MEMS sensor is arranged at the bottom end of the shell, a through hole communicated with the outside is formed in the bottom end of the shell, the MEMS sensor comprises a shell with a first opening, a circuit board and an MEMS chip, the circuit board and the shell form an accommodating space, the MEMS chip is accommodated in the accommodating space, the circuit board is provided with a second opening, the second opening is communicated with the through hole of the shell, and a flue communicated with the first opening and the smoking port is formed in the shell.

Description

Electronic cigarette

[ technical field ] A

The utility model relates to the field of sensors, in particular to an electronic cigarette.

[ background ] A method for producing a semiconductor device

In some electronic cigarettes in the related art, an electret type differential pressure sensor is used as a switch function to start the electronic cigarette, but the electret type sensor generally has the following problems: the surface mounting process cannot be carried out, and the production efficiency is low; the performance consistency is poor; the paint is sensitive to temperature, and the performance change is large after the temperature is too high; the size is large.

Therefore, there is a need to provide a new electronic cigarette to solve the above technical problems.

[ Utility model ] content

The utility model aims to provide an electronic cigarette which is simple and convenient to mount, high in reliability, high in sensitivity and small in size.

In order to achieve the above object, the present invention provides an electronic cigarette, which includes a housing having a smoking port at a top end thereof, an atomizer housed in the housing and disposed at an interval with the smoking port, a tobacco tar cavity disposed between the atomizer and the smoking port, and an MEMS sensor disposed at a bottom end of the housing, wherein a through hole communicating with the outside is disposed at the bottom end of the housing, the MEMS sensor includes a housing having a first opening, a circuit board enclosing a housing space with the housing, and an MEMS chip housed in the housing space, the circuit board is provided with a second opening, the second opening is communicated with the through hole of the housing, and a flue communicating the first opening with the smoking port is disposed in the housing.

Preferably, the circuit board is internally provided with conductive terminals, and the MEMS chip is directly connected with the conductive terminals.

Preferably, the circuit board is internally provided with conductive terminals, the MEMS sensor further comprises an ASIC chip fixed on the circuit board, and the MEMS chip is electrically connected with the conductive terminals through the ASIC chip.

Preferably, the housing of the MEMS sensor is a metal housing.

Preferably, the MEMS chip includes a back plate and a diaphragm spaced apart from the back plate, and the back plate is provided with a plurality of through holes.

Preferably, the back plate is closer to the smoking port than the diaphragm.

Preferably, a pressure difference exists between pressures acting on the diaphragm simultaneously by the first opening and the second opening, and the diaphragm is moved by the pressure difference, so that the output capacitance value of the MEMS chip is increased, and the atomizer is driven to work.

Preferably, the diaphragm is closer to the smoking port than the back plate.

Preferably, a pressure difference exists between pressures simultaneously acting on the diaphragm by the first opening and the second opening, and the diaphragm is moved by the pressure difference, so that the output capacitance value of the MEMS chip is reduced, and the atomizer is driven to work.

Preferably, the MEMS sensor is welded and fixed in the housing.

Compared with the prior art, the MEMS sensor in the electronic cigarette can be directly welded and fixed in the electronic cigarette shell, the installation is simple and convenient, and the production efficiency is high; stable structure, good consistency, high temperature resistance and small size.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

figure 1 is a cross-sectional view of an electronic cigarette of the present invention;

figure 2 is a cross-sectional view of a MEMS sensor of an e-cigarette in accordance with a first embodiment of the utility model;

figure 3 is a cross-sectional view of a MEMS sensor of an e-cigarette in a second embodiment of the utility model.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the electronic cigarette 100 according to the present invention includes a housing 1 having a smoking port 11 at a top end thereof, an atomizer 2 housed in the housing 1 and spaced from the smoking port 11, a tobacco tar cavity 3 disposed between the atomizer 2 and the smoking port 11, and an MEMS sensor 4 disposed at a bottom end 1 of the housing, wherein the MEMS sensor 4 is welded and fixed in the housing 1. Tobacco tar is injected into the tobacco tar cavity 3, and a through hole 12 communicated with the outside is formed in the bottom end of the shell 1.

Referring to fig. 2, for the MEMS sensor 4 in the electronic cigarette according to the first embodiment of the present invention, the MEMS sensor 4 includes a housing 41 having a first opening 411, a circuit board 42 enclosing an accommodating space 40 with the housing 41, and a MEMS chip 43 accommodated in the accommodating space 40, the circuit board 42 is provided with a second opening 421, the second opening 421 is communicated with the through hole 12 of the housing 1, and a flue 13 communicating the first opening 411 with the smoke suction port 11 is provided in the housing 1. The circuit board 42 is provided with conductive terminals 422, and the MEMS chip 43 is directly welded and fixed to the conductive terminals 422 to achieve electrical connection. The housing 41 of the MEMS sensor is a metal housing, the MEMS chip 43 includes a back plate 431 and a diaphragm 432 spaced from the back plate 431, and the back plate 431 is provided with a plurality of through holes 4311. The back plate 431 is closer to the smoking port 11 than the diaphragm 432, and of course, in other embodiments, the diaphragm 432 may be closer to the smoking port 11 than the back plate 431. In other embodiments, the diaphragm 432 may also be provided with through holes.

The circuit board 42 may further include a microprocessor, when a person inhales air, please refer to fig. 1 together, the direction of the arrow in fig. 1 is the airflow direction during inhaling air, because there is a pressure difference between the pressures acting on the diaphragm from the first opening and the second opening, the diaphragm moves toward the position of the smoke absorption port, if the back plate is disposed at a position closer to the smoke absorption port, the capacitance between the back plate and the diaphragm becomes larger, the MEMS sensor outputs an electrical signal, and after the signal is processed, the microprocessor receives the signal and outputs a corresponding signal to drive the atomizer to operate, thereby generating smoke, and the smoke is transmitted into the oral cavity of the person along the flue. Similarly, if the vibrating diaphragm sets up the position that is closer to the smoking mouth this moment, because there is pressure difference from first opening and the pressure that the second opening acted on the vibrating diaphragm for the vibrating diaphragm removes towards the direction that is close to the smoking mouth, and the electric capacity between backplate and the vibrating diaphragm will diminish, and MEMS sensor output electrical signal, through the processing back of signal, microprocessor will receive this signal and export the work of corresponding signal drive atomizer, thereby produce smog, smog spreads into in the human oral cavity along the flue.

Referring to fig. 3, for the MEMS sensor 4 'in the electronic cigarette according to the second embodiment of the present invention, the MEMS sensor 4' includes a housing 41 'having a first opening 411', a circuit board 42 'enclosing a receiving space 40' with the housing 41 ', a MEMS chip 43' and an ASIC chip 44 'received in the receiving space 40', the circuit board 42 'has a second opening 421', the second opening 421 'is communicated with the through hole 12' of the housing 1 ', a conductive terminal 422' is disposed in the circuit board 42 ', and the MEMS chip 43' is electrically connected to the conductive terminal 422 'through the ASIC chip 44'. The housing 41 ' of the MEMS sensor is a metal housing, the MEMS chip 43 ' includes a back plate 431 ' and a diaphragm 432 ' spaced from the back plate 431 ', and the back plate 431 ' is provided with a plurality of through holes 4311 '. The back plate 431 'is closer to the smoking port than the diaphragm 432', but in other embodiments, the diaphragm 432 'may be closer to the smoking port than the back plate 431'. In other embodiments, the diaphragm 432' may also be provided with through holes.

The circuit board can be provided with a microprocessor, or the ASIC chip is provided with an integrated microprocessor, when a person inhales, the vibrating diaphragm moves towards the position of the smoking port due to pressure difference of pressures acting on the vibrating diaphragm from the first opening and the second opening, if the back plate is arranged at the position closer to the smoking port at the moment, the capacitance between the back plate and the vibrating diaphragm is increased, the ASIC chip detects the change to output an electric signal, and after the signal is processed, the microprocessor receives the signal and outputs a corresponding signal to drive the atomizer to work, so that smoke is generated, and the smoke is transmitted into the oral cavity of the human body along the smoke flue. Similarly, if the vibrating diaphragm is arranged at a position closer to the smoke suction port, the vibrating diaphragm moves towards the direction close to the smoke suction port due to the pressure difference acting on the vibrating diaphragm from the first opening and the second opening, the capacitance between the back plate and the vibrating diaphragm is reduced, the ASIC chip detects the change and outputs an electric signal, and after the signal is processed, the microprocessor receives the signal and outputs a corresponding signal to drive the atomizer to work, so that smoke is generated, and the smoke is transmitted into the oral cavity of a human body along the flue.

The MEMS sensor in the electronic cigarette can be directly welded and fixed in the electronic cigarette shell, so that the electronic cigarette is simple and convenient to install and high in production efficiency; stable structure, good consistency, high temperature resistance and small size.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides an electronic cigarette, its characterized in that, electronic cigarette include a top have the shell of smoking mouth, accept in the shell and with the atomizer that smoking mouth interval set up, set up in the tobacco tar chamber between atomizer and smoking mouth and set up in the MEMS sensor of shell bottom, the bottom of shell is equipped with the external through-hole of intercommunication, the MEMS sensor including have first open-ended casing, with the casing encloses into accommodating space's circuit board, accept in MEMS chip in accommodating space, the circuit board is equipped with the second opening, the second opening with the through-hole intercommunication of shell, be equipped with the intercommunication in the shell first opening with the flue of smoking mouth.

2. The electronic cigarette of claim 1, wherein conductive terminals are disposed in the circuit board, and the MEMS chip is directly connected to the conductive terminals.

3. The electronic cigarette of claim 1, wherein the circuit board has conductive terminals therein, the MEMS sensor further comprises an ASIC chip fixed to the circuit board, and the MEMS chip is electrically connected to the conductive terminals through the ASIC chip.

4. The electronic cigarette of claim 1, wherein the housing of the MEMS sensor is a metal housing.

5. The electronic cigarette of claim 1, wherein the MEMS chip comprises a back plate and a diaphragm spaced apart from the back plate, and the back plate has a plurality of through holes.

6. The electronic cigarette of claim 5, wherein the back plate is closer to the smoking port than the diaphragm.

7. The electronic cigarette of claim 6, wherein the pressure difference between the pressures acting on the diaphragm simultaneously by the first opening and the second opening is such that the diaphragm is moved by the pressure difference to increase the output capacitance of the MEMS chip, thereby driving the atomizer to operate.

8. The electronic cigarette of claim 5, wherein the diaphragm is closer to the smoking port than the back plate.

9. The electronic cigarette of claim 8, wherein the pressure difference between the pressures acting on the diaphragm simultaneously by the first opening and the second opening is such that the diaphragm moves to make the output capacitance of the MEMS chip smaller, thereby driving the atomizer to operate.

10. The electronic cigarette of claim 1, wherein the MEMS sensor is solder-fixed within the housing.