CN202019451U - Capacitance microphone - Google Patents
Capacitance microphone Download PDFInfo
- Publication number
- CN202019451U CN202019451U CN2011201038493U CN201120103849U CN202019451U CN 202019451 U CN202019451 U CN 202019451U CN 2011201038493 U CN2011201038493 U CN 2011201038493U CN 201120103849 U CN201120103849 U CN 201120103849U CN 202019451 U CN202019451 U CN 202019451U
- Authority
- CN
- China
- Prior art keywords
- wiring board
- shell
- vibrating diaphragm
- capacitance component
- electret condencer
- 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 - Lifetime
Links
- 238000013016 damping Methods 0.000 claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
A capacitance microphone comprises a protection device, a capacitance assembly, a conductive connecting piece, an insulation device and a damping device. The protection device comprises a tubular shell with an opening at one end and a circuit board combined with the opening end of the shell, wherein the circuit board and a closed end of the shell are respectively provided with a sound hole, and an electron component is arranged on a surface of the circuit on the inner side of the protection device. The capacitance assembly is arranged between the circuit board and the closed end of the shell and comprises a pole plate and a vibrating diaphragm assembly, and the vibrating diaphragm assembly comprises a vibrating diaphragm and a vibrating ring. The conductive connecting piece is electrically connected with the capacitance assembly and the electron component. The insulation device is arranged on the inner side of the shell. The damping device is combined with the outer surface of the closed end of the shell and covered on the sound hole arranged on the closed end of the shell. Due to a fact that the damping device is arranged on the outer surface of the closed end of the shell, acoustic resistance of the damping device is easy to adjust so that directivity of products is better.
Description
Technical field
The utility model relates to the electroacoustic field, is specifically related to the unidirectional capacitive microphone that a kind of damping size is adjusted easily.
Background technology
Uni-directional microphone is because its directivity that sound is picked up is widely used in fields such as mobile phone, telephone set, earphone.
Unidirectional capacitive microphone comprises the protective device of being made up of wiring board and cylindrical case, and wherein the bottom of wiring board and cylindrical case is equipped with hole; Capacitance component is located at protective device inside, tentatively finishes the conversion of acoustical signal to the signal of telecommunication; Capacitance component comprises pole plate and vibrating diaphragm assembly, and the vibrating diaphragm assembly comprises the ring and encircle vibrating diaphragm in away from outer casing bottom in conjunction with shaking of shaking that is connected with outer casing bottom, and pole plate is positioned at the side of vibrating diaphragm near wiring board, and pole plate is provided with perforate.
The Electret Condencer Microphone of this structure, need be between capacitance component and wiring board or the inboard equipotential of wiring board install damping device and be used for voice signal is decayed, when sound source on shell sound during the hole sensitivity the highest, sound source on wiring board during the sound hole sensitivity minimum.As publication number is that the Chinese patent of CN201134931 discloses a kind of unidirectional capacitive microphone, comprise shell, be contained in vibrating diaphragm assembly and pole plate in the shell, pole plate is provided with the connecting ring of conduction near a side of wiring board, one side of the close wiring board of this conduction connection ring is provided with the housing of conduction, and this housing bottom is provided with damping device.
But, since the damping difference of damping device in the unidirectional capacitive microphone, the excessive or too small directive property that all can have influence on unidirectional capacitive microphone of damping acoustic resistance.And the Electret Condencer Microphone of employing said structure, because damping device is arranged at the inside of Electret Condencer Microphone, the adjustment of damping device acoustic resistance size is not easy to realize.Therefore, be necessary the unidirectional capacitive microphone of said structure is improved, to avoid above-mentioned defective.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of Electret Condencer Microphone, can adjust the size of Electret Condencer Microphone damping acoustic resistance easily, makes the directive property of Electret Condencer Microphone better, and can production efficiency.
To achieve these goals, the utility model provides a kind of Electret Condencer Microphone, wherein, comprise, protective device, comprise the cylindrical case and the wiring board that is incorporated into described shell aperture end of an end opening, described wiring board and described closed termination of outer cover are equipped with hole, and the surface that described wiring board is positioned at the protective device inboard is provided with electronic devices and components; Capacitance component, described capacitance component comprise pole plate and vibrating diaphragm assembly between described wiring board and closed termination of outer cover, described vibrating diaphragm assembly comprises vibrating diaphragm and the ring that shakes; Conducting connecting part is electrically connected described capacitance component and electronic devices and components; Seal is arranged at the inboard of described shell; Damping device is incorporated into the outer surface of described closed termination of outer cover, and covers described closed termination of outer cover sound hole.
In addition, preferred scheme is that described capacitance component is preceding utmost point formula structure.
In addition, preferred scheme is that described capacitance component is arranged at the side near described wiring board.
In addition, preferably scheme is, described ring one end that shakes combines with described vibrating diaphragm, and the other end is connected with described wiring board, and the height of the described ring that shakes is greater than the height of described electronic devices and components.
In addition, preferred scheme is that described conductive connecting device support and connection are between described capacitance component and described closed termination of outer cover.
After adopting technique scheme, than conventional art, the utility model is arranged at the outer surface of closed termination of outer cover with damping device, the size of damping device acoustic resistance is adjusted easily, thereby made the directive property of product better.
Description of drawings
By below in conjunction with accompanying drawing embodiment being described, above-mentioned feature of the present utility model and technological merit will become apparent and understand easily.
Fig. 1 is the cross-sectional view of the utility model Electret Condencer Microphone.
Fig. 2 is the structure for amplifying schematic diagram of A part shown in Figure 1.
Fig. 3 is the cross-sectional view of the utility model Electret Condencer Microphone vibrating diaphragm assembly.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done further detailed description.
In the following description, only the mode by explanation is described some one exemplary embodiment of the present utility model, undoubtedly, those of ordinary skill in the art can recognize, under the situation that does not depart from spirit and scope of the present utility model, can revise described embodiment with various mode.Therefore, accompanying drawing and be described in just illustratively in essence rather than is used to limit the protection range of claim.In addition, in this manual, identical Reference numeral indicates identical part.
Fig. 1 is the cross-sectional view of the utility model Electret Condencer Microphone; Fig. 2 is the structure for amplifying schematic diagram of A part shown in Figure 1; Fig. 3 is the cross-sectional view of the utility model Electret Condencer Microphone vibrating diaphragm assembly; as shown in Figure 1 to Figure 3; Electret Condencer Microphone is single Electret Condencer Microphone that points to; comprise the protective device of forming by wiring board 1 and cylindrical case 2; shell 2 is the structure of an end opening; the blind end of wiring board 2 is provided with hole 21; wiring board 1 is incorporated into the openend of described shell 2; wherein; wiring board 1 is provided with hole 11; the surface that wiring board 1 is positioned at the protective device inboard also is provided with electronic devices and components 12, and electronic devices and components 12 are used for signal processing and impedance conversion.
Need to install damping device in the uni-directional microphone, voice signal is decayed.In this implementation process, damping device 6 is incorporated into the outer surface of shell 2 blind ends by modes such as bondings, and the sound hole 21 on the covering shell 2, and wherein, damping device 6 can be materials such as wire netting, screen cloth.In the uni-directional microphone course of work, part voice signal is acted directly on the vibrating diaphragm 33 by the sound hole 11 on the wiring board 1, and another part voice signal acts on the opposite side of vibrating diaphragm 33 successively by the perforate on damping device 6, shell 2 blind end sound holes 21 and the pole plate 31.When sound source is positioned at position over against wiring board 1, the phase difference maximum of vibrating diaphragm 33 both sides voice signals, Electret Condencer Microphone is the highest to the sensitivity of voice response.
The Electret Condencer Microphone of this structure, damping device directly is incorporated into the outer surface of closed termination of outer cover, can directly carry out the adjustment of damping device acoustic resistance, the adjustment of acoustic resistance is realized easily, thereby can better adjust the directive property of Electret Condencer Microphone in the Electret Condencer Microphone outside.And when making microphone by surface mount process, damping device can be the material of non-refractory, only need carry out mounting of damping device after crossing Reflow Soldering and get final product, and has increased the optional scope of damping device material.Because damping device is incorporated into shell and has on the lateral surface in hole, has the dustproof effect simultaneously, thereby has saved dust guard.
Under above-mentioned instruction of the present utility model; those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description; and these improvement and distortion; all drop in the protection range of the present utility model; those skilled in the art should be understood that; above-mentioned specific descriptions are just better explained the purpose of this utility model, and protection range of the present utility model is limited by claim and equivalent thereof.
Claims (5)
1. an Electret Condencer Microphone is characterized in that, comprise,
Protective device comprises the cylindrical case of an end opening and is incorporated into the wiring board of described shell aperture end that described wiring board and described closed termination of outer cover are equipped with hole, and the surface that described wiring board is positioned at the protective device inboard is provided with electronic devices and components;
Capacitance component, described capacitance component comprise pole plate and vibrating diaphragm assembly between described wiring board and closed termination of outer cover, described vibrating diaphragm assembly comprises vibrating diaphragm and the ring that shakes;
Conducting connecting part is electrically connected described capacitance component and electronic devices and components;
Seal is arranged at the inboard of described shell;
Damping device is incorporated into the outer surface of described closed termination of outer cover, and covers described closed termination of outer cover sound hole.
2. Electret Condencer Microphone according to claim 1 is characterized in that, described capacitance component is preceding utmost point formula structure.
3. Electret Condencer Microphone according to claim 1 and 2 is characterized in that, described capacitance component is arranged at the side near described wiring board.
4. Electret Condencer Microphone according to claim 3 is characterized in that, described ring one end that shakes combines with described vibrating diaphragm, and the other end is connected with described wiring board, and the height of the described ring that shakes is greater than the height of described electronic devices and components.
5. Electret Condencer Microphone according to claim 4 is characterized in that, described conductive connecting device support and connection are between described capacitance component and described closed termination of outer cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201038493U CN202019451U (en) | 2011-04-11 | 2011-04-11 | Capacitance microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201038493U CN202019451U (en) | 2011-04-11 | 2011-04-11 | Capacitance microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202019451U true CN202019451U (en) | 2011-10-26 |
Family
ID=44813116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201038493U Expired - Lifetime CN202019451U (en) | 2011-04-11 | 2011-04-11 | Capacitance microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202019451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889967A (en) * | 2019-03-28 | 2019-06-14 | 百度在线网络技术（北京）有限公司 | Microphone and intelligent sound equipment |
-
2011
- 2011-04-11 CN CN2011201038493U patent/CN202019451U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889967A (en) * | 2019-03-28 | 2019-06-14 | 百度在线网络技术（北京）有限公司 | Microphone and intelligent sound equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20200615 Address after: 266104 room 103, 396 Songling Road, Laoshan District, Qingdao, Shandong Province Patentee after: Goer Microelectronics Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: GOERTEK Inc. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |
|
| CX01 | Expiry of patent term |