CN205454092U - Electret condenser microphone structure - Google Patents
Electret condenser microphone structure Download PDFInfo
- Publication number
- CN205454092U CN205454092U CN201521106715.1U CN201521106715U CN205454092U CN 205454092 U CN205454092 U CN 205454092U CN 201521106715 U CN201521106715 U CN 201521106715U CN 205454092 U CN205454092 U CN 205454092U
- Authority
- CN
- China
- Prior art keywords
- insulated metal
- metal vibrating
- vibrating diaphragm
- sole plate
- microphone structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims abstract description 36
- 239000003990 capacitor Substances 0.000 claims abstract description 20
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims description 3
- 230000036039 immunity Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 6
- 239000004812 Fluorinated ethylene propylene Substances 0.000 abstract 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 abstract 1
- 229920009441 perflouroethylene propylene Polymers 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model discloses an electret condenser microphone structure, relating to the technical field of microphones; the capacitor comprises a PCBA circuit board and a capacitor head, wherein the capacitor head is composed of an insulating metal vibrating membrane and a shell bottom polar plate; the PCBA circuit board and the insulated metal vibrating membrane are arranged in the accommodating cavity of the shell bottom plate; the outer wall of the insulated metal vibrating membrane is insulated, the upper end and the lower end of the insulated metal vibrating membrane are conductive, and an FEP (fluorinated ethylene propylene) membrane is arranged on the bottom surface of the insulated metal vibrating membrane; the bottom of the bottom polar plate of the shell is provided with a plurality of sound inlet holes communicated with the accommodating cavity; the utility model has the advantages that: the utility model discloses an electret condenser microphone structure's simple structure, distortion are low, and sensitivity is high, and the noise immunity is strong.
Description
Technical field
This utility model relates to microphone techniques field, and in particular, this utility model relates to a kind of electret capacitor microphone structure.
Background technology
Along with constantly the reducing of electronic product volume, the improving constantly of performance, people are more and more higher to the volume of the mike that electronic product uses and the requirement of performance.The electret capacitor microphone of volume production mostly is the three sandwich circuit board structures connected by fixing glue or the encapsulating structure adding metal shell for wiring board at present.The microphone structure of these kinds is the most complex, sensitivity is low, noiseproof feature is weak.
Summary of the invention
The purpose of this utility model is effectively to overcome the deficiency of above-mentioned technology, it is provided that a kind of simple in construction, the electret capacitor microphone structure that highly sensitive, noise immunity is strong.
The technical solution of the utility model is achieved in that a kind of electret capacitor microphone structure, and it thes improvement is that: include PCBA wiring board and electric capacity head, and described electric capacity head is made up of insulated metal vibrating diaphragm and shell sole plate；
Described shell sole plate has one and houses cavity, and described PCBA wiring board and insulated metal vibrating diaphragm are arranged in the accommodating cavity of shell sole plate；
The outer wall insulation of described insulated metal vibrating diaphragm, and the upper and lower side conduction of insulated metal vibrating diaphragm, the bottom surface of described insulated metal vibrating diaphragm is provided with a fep film；
It is provided with bottom described shell sole plate and houses multiple sound holes that cavity is connected.
In above-mentioned structure, described PCBA wiring board is provided with conductive contact.
In above-mentioned structure, described PCBA wiring board is provided with amplifying circuit, and described amplifying circuit includes a prime amplifier.
In above-mentioned structure, described shell sole plate is cup-shaped.
In above-mentioned structure, being provided with boss at the bottom corners of described shell sole plate, described insulated metal vibrating diaphragm is positioned on described boss.
The beneficial effects of the utility model are: insulated metal vibrating diaphragm of the present utility model is conducted electricity, and polarizing voltage, on insulated metal vibrating diaphragm, is added between insulated metal vibrating diaphragm and shell sole plate and boss by resistance.When sound wave acts on vibrating diaphragm from sound hole, insulated metal diaphragm oscillations will be caused, this spacing inevitably resulting in insulation insulated metal vibrating diaphragm and shell sole plate changes, i.e. capacitance changes, thus cause the electric charge on insulated metal vibrating diaphragm to change, namely form tone currents at two interpolars, when electric current flows through resistance, be converted into again audio signal voltage, the prime amplifier being then fed into PCBA board amplifies output, thus completes the conversion of the acoustic duct signal of telecommunication；The simple in construction of electret capacitor microphone structure of the present utility model, distortion are low, and highly sensitive, noise immunity is strong；It addition, electret capacitor microphone structure decreases a pad and moulds chamber, i.e. decrease assembly technology, reduce cost, improve the quality of mike.
[accompanying drawing explanation]
Fig. 1 is generalized section of the present utility model.
[detailed description of the invention]
Being described in detail specific embodiment of the utility model below in conjunction with accompanying drawing, the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this utility model, and can not be construed to restriction of the present utility model.
With reference to shown in Fig. 1, a kind of electret capacitor microphone structure that this utility model discloses, Fig. 1 is the cross-sectional view of electret capacitor microphone structure, this electret capacitor microphone structure includes PCBA wiring board 10 and electric capacity head 20, and described electric capacity head 20 is made up of insulated metal vibrating diaphragm 201 and shell sole plate 30；Described shell sole plate 30 is cup-shaped, described shell sole plate 30 has one and houses cavity, in the present embodiment, described PCBA wiring board 10 and insulated metal vibrating diaphragm 201 are arranged in the accommodating cavity of shell sole plate 30, and described PCBA wiring board 10 is provided with conductive contact 101；It is provided with amplifying circuit on described PCBA wiring board 10, and described amplifying circuit includes a prime amplifier.Being provided with boss 301 at the bottom corners of described shell sole plate 30, described insulated metal vibrating diaphragm 201 is positioned on described boss 301.
It addition, be provided with bottom described shell sole plate 30 and house multiple sound holes 302 that cavity is connected, in the present embodiment, shell sole plate 30 is provided with three sound holes 302；Described insulated metal vibrating diaphragm 201, the bottom surface of described insulated metal vibrating diaphragm 201 is provided with a fep film 202.Fep film 202 in insulated metal vibrating diaphragm 201 of the present utility model conducts electricity, and polarizing voltage, in insulated metal vibrating diaphragm 201, is added between insulated metal vibrating diaphragm 201 and shell sole plate 30 by resistance.When sound wave acts on insulated metal vibrating diaphragm 201 from sound hole 302, insulated metal vibrating diaphragm 201 will be caused to vibrate, this spacing inevitably resulting in insulated metal vibrating diaphragm 201 and shell sole plate 30 changes, i.e. capacitance changes, thus cause the electric charge on insulated metal vibrating diaphragm 201 to change, namely form tone currents at two interpolars, audio signal voltage it is converted into again when electric current flows through resistance, the prime amplifier being then fed into PCBA wiring board 10 amplifies output, thus completes the conversion of the acoustic duct signal of telecommunication.The simple in construction of electret capacitor microphone structure of the present utility model, distortion are low, and highly sensitive, noise immunity is strong；It addition, electret capacitor microphone structure decreases a pad and moulds chamber, i.e. decrease assembly technology, reduce cost, improve the quality of mike.
Described above is only preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, various deformation and amendment can occur, retouching, amendment or the equivalent that all those of ordinary skill in the art are made as described above, belong to the scope that this utility model is protected.
Claims (5)
1. an electret capacitor microphone structure, it is characterised in that: including PCBA wiring board and electric capacity head, described electric capacity head is made up of insulated metal vibrating diaphragm and shell sole plate；
Described shell sole plate has one and houses cavity, and described PCBA wiring board and insulated metal vibrating diaphragm are arranged in the accommodating cavity of shell sole plate；
The outer wall insulation of described insulated metal vibrating diaphragm, and the upper and lower side conduction of insulated metal vibrating diaphragm, the bottom surface of described insulated metal vibrating diaphragm is provided with a fep film；
It is provided with bottom described shell sole plate and houses multiple sound holes that cavity is connected.
A kind of electret capacitor microphone structure the most according to claim 1, it is characterised in that: described PCBA wiring board is provided with conductive contact.
A kind of electret capacitor microphone structure the most according to claim 1 and 2, it is characterised in that: it is provided with amplifying circuit on described PCBA wiring board, and described amplifying circuit includes a prime amplifier.
A kind of electret capacitor microphone structure the most according to claim 1, it is characterised in that: described shell sole plate is cup-shaped.
A kind of electret capacitor microphone structure the most according to claim 4, it is characterised in that: being provided with boss at the bottom corners of described shell sole plate, described insulated metal vibrating diaphragm is positioned on described boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106715.1U CN205454092U (en) | 2015-12-25 | 2015-12-25 | Electret condenser microphone structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106715.1U CN205454092U (en) | 2015-12-25 | 2015-12-25 | Electret condenser microphone structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205454092U true CN205454092U (en) | 2016-08-10 |
Family
ID=56579240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521106715.1U Expired - Fee Related CN205454092U (en) | 2015-12-25 | 2015-12-25 | Electret condenser microphone structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205454092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682990A (en) * | 2019-01-30 | 2019-04-26 | 武汉齐物科技有限公司 | A kind of wind measurement method and device |
| CN109952769A (en) * | 2016-08-18 | 2019-06-28 | 哈曼国际工业有限公司 | Electret capacitor microphone and its manufacturing method |
-
2015
- 2015-12-25 CN CN201521106715.1U patent/CN205454092U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109952769A (en) * | 2016-08-18 | 2019-06-28 | 哈曼国际工业有限公司 | Electret capacitor microphone and its manufacturing method |
| US10939192B2 (en) | 2016-08-18 | 2021-03-02 | Harman International Industries, Incorporated | Electret condenser microphone and manufacturing method thereof |
| CN109682990A (en) * | 2019-01-30 | 2019-04-26 | 武汉齐物科技有限公司 | A kind of wind measurement method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102740206B (en) | Dual cell mems assembly | |
| US8379881B2 (en) | Silicon based capacitive microphone | |
| CN204652659U (en) | A kind of differential capacitance type MEMS microphone | |
| CN109413554B (en) | Directional MEMS microphone | |
| JP2016521036A (en) | MEMS device with increased rear capacity | |
| US8023670B2 (en) | Stray capacitance reduced condenser microphone | |
| JP3180969U (en) | Electret condenser microphone | |
| WO2016179997A1 (en) | Loudspeaker module | |
| CN102075838A (en) | Electret microphone | |
| CN205454092U (en) | Electret condenser microphone structure | |
| US20230403490A1 (en) | Silicon-Based Microphone Apparatus And Electronic Device | |
| WO2017161653A1 (en) | A speaker module housing and manufacturing method for speaker module housing | |
| EP2369855B1 (en) | Electronic device with electret electro-acoustic transducer | |
| CN204733382U (en) | A kind of MEMS microphone | |
| WO2016107307A1 (en) | Sound device | |
| CN110958519A (en) | Active noise reduction acoustic unit and sound production monomer | |
| CN208522932U (en) | A kind of double magnetic are total to chamber earphone horn | |
| WO2022083592A1 (en) | Mems chip | |
| CN205160786U (en) | Capacitive microphone | |
| US20230171551A1 (en) | Silicon-Based Microphone Device And Electronic Device | |
| US20230370785A1 (en) | Silicon Based Microphone Apparatus And Electronic Device | |
| WO2021248929A1 (en) | Silicon-based microphone device and electronic device | |
| CN204887467U (en) | MEMS microphone | |
| US10158950B2 (en) | Cylindrical contact-type microphone | |
| CN101742388B (en) | Electronic device with electret electroacoustic transducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20171225 |