Electronic cigarette microphone adopting MEMS module
By using the MEMS module and ring -shaped packaging in the electronic smoke head, the problem of complex and damaging the existing membrane structure is solved, and a simpler process and higher product stability and detection accuracy are achieved.
Patent Information
- Application Number
- CN202420088188.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-01-15
AI Technical Summary
The existing electronic cigarette heads use diaphragms, which have complex structures, strict process requirements, and are susceptible to process damage.
Adopt the MEMS module, form a patch composition on the Midou PCB through the SMT process patch, and use the circular MEMS packaging module to simplify the structure and process.
Electronic smoke heads with simple structure, easy process, product stability and high yield, with reasonable internal layout and accurate airway detection.
Smart Images
Figure CN222397022U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic cigarette microphones, and in particular to an electronic cigarette microphone using a MEMS module. Background Art
[0002] Electronic cigarettes are devices that convert liquid oil into mist aerosols that are inhaled by the smoker. Existing commercially available electronic cigarettes mainly use electric heating to heat the liquid oil and atomize it into mist aerosols. With the continuous development of people's life needs, more and more people choose to use electronic cigarettes instead of traditional cigarettes because electronic cigarettes do not contain tar, suspended particulates and other harmful ingredients in traditional cigarettes. Some people also use electronic cigarettes to quit smoking.
[0003] Traditional electronic cigarette microphones use an annular diaphragm, and the change in capacitance is obtained by the deformation of the diaphragm. For example, a "wrinkle-proof membrane electronic cigarette microphone and electronic cigarette" disclosed in Chinese patent documents, with the announcement number CN216533833U, includes a shell and a plate, a gasket, a vibration module and a PCB assembly encapsulated in the shell in sequence, and the vibration module is composed of a diaphragm, a copper ring, and a cavity. The diaphragm and the copper ring are two phase-separated elements, the copper ring is connected between the diaphragm and the PCB assembly, and the cavity is placed between the copper ring and the shell. However, the traditional microphone using an annular diaphragm has a complex structure, strict process requirements, and the diaphragm is easily damaged by the process. Utility Model Content
[0004] The utility model mainly solves the problems that the prior art electronic cigarette microphone uses a diaphragm, has a complex structure, strict process requirements, and the diaphragm is easily damaged by the process; and provides an electronic cigarette microphone using a MEMS module, which uses a MEMS module structure, has a simple structure, is easy to process, and has high product stability and yield.
[0005] The above technical problems of the utility model are mainly solved by the following technical solutions:
[0006] An electronic cigarette microphone using a MEMS module comprises a shell, a head end of the shell is provided with a mesh cloth, a PCB of the microphone is arranged in the shell, a side of the PCB facing the head end of the shell is provided with a circular MEMS module; a side of the PCB facing away from the head end of the shell is provided with a signal output terminal.
[0007] The MEMS module is mounted on the microphone PCB through the SMT process to form a patch assembly. The annular cavity is first placed in the shell and then the patch assembly is horizontally loaded. The shell is sealed by an edge sealing machine, and finally a dustproof mesh is attached to the bottom of the shell. The MEMS module on the back of the microphone senses the change in air pressure and converts it into a change in capacitance. When the microphone inhales from the mesh side, the capacitance increases, and when the microphone blows from the mesh side, the capacitance decreases. The capacitance change is transmitted through the signal output terminal structure corresponding to the front of the microphone. The module structure of MEMS is simple in structure, easy to process, and has high product stability and yield.
[0008] The existing electronic cigarette microphones using MEMS modules are generally square MEMS packaging modules, which can only be used in the form of patches, and the output method is also single, and the internal device layout is also relatively difficult. This application uses a circular MEMS module package, the internal device layout is better, the airway detection is more accurate, and the airtightness is better.
[0009] Preferably, the housing is a circular ring housing, and an annular cavity for supporting the PCB is arranged inside the housing. The PCB of the microphone is supported by the annular cavity.
[0010] Preferably, the MEMS module is arranged on one surface of the PCB of the microphone by a patch process, and is used by SMT patch, which improves the production efficiency of the microphone user.
[0011] Preferably, the signal output terminal provided on the PCB is a concentric circle pad for outputting capacitance value signals. The MEMS module of the microphone senses the pressure change and converts it into capacitance value change. When the mesh cloth faces the microphone and inhales air, the capacitance value increases. When the mesh cloth faces the microphone and blows air, the capacitance value decreases. The capacitance value change is transmitted through the "concentric circle" pad on the front of the microphone.
[0012] Preferably, the signal output terminal provided on the PCB is a pin for outputting capacitance value signal. The MEMS module of the microphone senses the change of air pressure and converts it into capacitance value change. When the microphone is inhaled from the mesh cloth side, the capacitance value increases, and when the microphone is blown from the mesh cloth side, the capacitance value decreases. The capacitance value change is transmitted through the two pins on the front of the microphone.
[0013] Preferably, the MEMS module is arranged at the center of the PCB, so that the layout is more flexible and better.
[0014] Preferably, the MEMS module and the pins are arranged on two opposite sides of the PCB respectively, so that the layout is more flexible and the layout is better.
[0015] Preferably, a plurality of circular air holes are distributed at the head end of the shell.
[0016] The beneficial effects of the utility model are:
[0017] 1. The MEMS module structure is simple, easy to manufacture, and has high product stability and yield.
[0018] 2. Use it in the form of SMT patches to improve the production efficiency of microphone users.
[0019] 3. The use of circular MEMS packaging makes the internal layout of the microphone more reasonable and simple, the output method is more diverse, and the airway detection is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the electronic cigarette microphone of the first embodiment of the present utility model.
[0021] Figure 2 This is a schematic diagram of the structure of the electronic cigarette microphone of the second embodiment of the present utility model.
[0022] In the figure, 1. MEMS module, 2. PCB, 3. annular cavity, 4. housing, 5. mesh. DETAILED DESCRIPTION
[0023] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings. Example
[0024] An electronic cigarette microphone head using a MEMS module in this embodiment, such as Figure 1 As shown, it includes a MEMS module 1, a PCB 2, an annular cavity 3, a shell 4 and a mesh 5.
[0025] The side surface of the shell 4 is a toroidal surface, and the bottom of the shell 4 is a round surface with air holes. In this embodiment, the bottom of the shell 4 is used as the head end of the shell 4, and a plurality of circular air holes are distributed on the bottom surface of the head end of the shell 4. The mesh 5 is arranged on the outside of the head end of the shell 4.
[0026] The annular cavity 3 is in a circular ring shape. In the present embodiment, the outer wall of the annular cavity 3 fits with the inner wall of the shell 4; the bottom of the annular cavity 3 contacts with the bottom of the shell 4, and the top of the annular cavity 3 supports the bottom of the microphone PCB2.
[0027] The MEMS module 1 is arranged at the bottom of the PCB 2 by SMT process patch, that is, the MEMS module 1 is arranged on the side of the PCB facing the head end of the housing 4. The use of the SMT patch improves the production efficiency of the microphone user. In this embodiment, the MEMS module 1 is packaged in a ring shape, and the MEMS module 1 is arranged at the center of the PCB. The layout is more flexible and the layout is better.
[0028] A signal output terminal is provided on the side of PCB2 facing away from the head end of the housing 4. In this embodiment, the signal output terminal provided on the PCB is a concentric circle pad for outputting a capacitance signal. The MEMS module of the microphone senses the pressure change and converts it into capacitance change. When the microphone inhales from the mesh side, the capacitance increases, and when the microphone blows from the mesh side, the capacitance decreases. The capacitance change is transmitted through the "concentric circle" pad on the front of the microphone.
[0029] The MEMS module 1 is mounted on the microphone PCB 2 through the SMT process to form a patch assembly. The annular cavity 3 is first placed in the shell 4, and then the patch assembly is horizontally loaded. The shell 4 is sealed by an edge sealing machine, and finally a dustproof mesh 5 is attached to the bottom of the shell 4. The MEMS module 1 on the back of the microphone senses the change in air pressure and converts it into a change in capacitance. When the microphone is inhaled from the mesh 5, the capacitance increases, and when the microphone is blown from the mesh 5, the capacitance decreases. The capacitance change is transmitted through the signal output terminal structure corresponding to the front of the microphone. The module structure of MEMS is simple in structure, easy to process, and has high product stability and yield. Example
[0030] An electronic cigarette microphone head using a MEMS module in this embodiment, such as Figure 2 As shown, it includes a MEMS module 1, a PCB 2, an annular cavity 3, a shell 4 and a mesh 5.
[0031] The side surface of the shell 4 is a toroidal surface, and the bottom of the shell 4 is a round surface with air holes. In this embodiment, the bottom of the shell 4 is used as the head end of the shell 4, and a plurality of circular air holes are distributed on the bottom surface of the head end of the shell 4. The mesh 5 is arranged on the outside of the head end of the shell 4.
[0032] The annular cavity 3 is in a circular ring shape. In the present embodiment, the outer wall of the annular cavity 3 fits with the inner wall of the shell 4; the bottom of the annular cavity 3 contacts with the bottom of the shell 4, and the top of the annular cavity 3 supports the bottom of the microphone PCB2.
[0033] The MEMS module 1 is arranged at the bottom of the PCB 2 by SMT process patch, that is, the MEMS module 1 is arranged on the side of the PCB facing the head end of the shell 4. The use of the SMT patch improves the production efficiency of the microphone user. In this embodiment, the MEMS module 1 is packaged in a circular ring shape, and the MEMS module and the pins are arranged on two opposite sides of the PCB respectively. The layout is more flexible and the layout is better.
[0034] A signal output terminal is provided on the side of PCB2 facing away from the head end of the housing 4. In this embodiment, the signal output terminal provided on PCB2 is a pin for outputting a capacitance signal. The MEMS module of the microphone senses the change in air pressure and converts it into a change in capacitance. When the microphone is inhaled from the mesh side, the capacitance increases, and when the microphone is blown from the mesh side, the capacitance decreases. The capacitance change is transmitted through the two pins on the front of the microphone.
[0035] The MEMS module 1 is mounted on the microphone PCB 2 through the SMT process to form a patch assembly. The annular cavity 3 is first placed in the shell 4, and then the patch assembly is horizontally loaded. The shell 4 is sealed by an edge sealing machine, and finally a dustproof mesh 5 is attached to the bottom of the shell 4. The MEMS module 1 on the back of the microphone senses the change in air pressure and converts it into a change in capacitance. When the microphone is inhaled from the mesh 5, the capacitance increases, and when the microphone is blown from the mesh 5, the capacitance decreases. The capacitance change is transmitted through the signal output terminal structure corresponding to the front of the microphone. The module structure of MEMS is simple in structure, easy to process, and has high product stability and yield.
[0036] The existing electronic cigarette microphones using MEMS modules are generally square MEMS packaging modules, which can only be used in the form of patches, and the output method is also single, and the internal device layout is also relatively difficult. This application uses a circular MEMS module package, the internal device layout is better, the airway detection is more accurate, and the airtightness is better.
[0037] It should be understood that the embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.
Claims
1. An electronic cigarette microphone head using a MEMS module, comprising a housing (4), wherein a mesh cloth (5) is provided at the head end of the housing (4), characterized in that: The PCB (2) of the microphone is arranged in the housing (4); a circular MEMS module (1) is arranged on the side of the PCB (2) facing the head end of the housing (4); and a signal output terminal is arranged on the side of the PCB (2) facing away from the head end of the housing (4).
2. The electronic cigarette microphone using a MEMS module according to claim 1, characterized in that: The housing (4) is a circular ring-shaped housing, and an annular cavity (3) for supporting the PCB is arranged inside the housing (4).
3. An electronic cigarette microphone using a MEMS module according to claim 1 or 2, characterized in that: The MEMS module (1) is arranged on the PCB (2) of the microphone through a patch process.
4. The electronic cigarette microphone using a MEMS module according to claim 3, characterized in that: The signal output terminal arranged on the PCB (2) is a concentric circle pad for outputting capacitance signals.
5. The electronic cigarette microphone using a MEMS module according to claim 3, characterized in that: The signal output terminal arranged on the PCB (2) is a pin for outputting a capacitance signal.
6. An electronic cigarette microphone using a MEMS module according to claim 1 or 4, characterized in that: The MEMS module (1) is arranged at the center of the PCB (2).
7. An electronic cigarette microphone using a MEMS module according to claim 1 or 5, characterized in that: The MEMS module (1) and the plug pins are respectively arranged on two opposite sides of the PCB (2).
8. An electronic cigarette microphone using a MEMS module according to claim 1, 2, 4 or 5, characterized in that: The head end of the shell (4) is provided with a plurality of circular air holes in a distributed manner.