CN201639774U - Unidirectional microphone - Google Patents
Unidirectional microphone Download PDFInfo
- Publication number
- CN201639774U CN201639774U CN2010201030548U CN201020103054U CN201639774U CN 201639774 U CN201639774 U CN 201639774U CN 2010201030548 U CN2010201030548 U CN 2010201030548U CN 201020103054 U CN201020103054 U CN 201020103054U CN 201639774 U CN201639774 U CN 201639774U
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- pole plate
- uni
- directional microphone
- shell
- acoustic resistance
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model provides a unidirectional microphone which comprises a circuit board and a barrel-shaped shell which are provided with their respective sound inlet holes, and the circuit board and the shell form a protection device of the unidirectional microphone; a capacitor assembly is arranged in the protection device and comprises a diaphragm, a pole plate and an insulation device between the diaphragm and the pole plate, wherein the diaphragm and the pole plate are oppositely arranged, and a vent hole is arranged on the pole plate; a conduction device and an isolation device for electrically isolating the conduction device from the shell are also arranged in the protection device; the capacitor assembly is electrically connected to the circuit board respectively through the conduction device and the shell, a damping device is arranged on the surface of the pole plate away from the diaphragm, and an acoustic resistance adjustment device with an opening is combined on the damping device. The utility model can simplify the assembling process of the damping device of the microphone unit, reduce the production cost of the microphone unit and improve the production efficiency.
Description
Technical field
The utility model is specifically related to a kind of uni-directional microphone.
Background technology
Along with the development in portable consumer electronic product market, a large amount of miniature pickup device particularly miniature capacitance type microphone has obtained using widely.In the application of miniature capacitance type microphone,, generally need unidirectional capacitive microphone be installed in the portable consumer electronic product and realize above-mentioned performance requirement for satisfying the pickup needs of directivity.The unidirectional capacitive microphone of traditional structure generally comprises wiring board and the formed protective device of shell, and on wiring board and shell sound hole is set respectively.In described protective device, also be provided with seal and becket; sound hole on corresponding shell also is provided with plane-parallel capacitor; two electrodes of plane-parallel capacitor are electrically connected on the wiring board by becket and shell respectively, again by the electronic component of the signal of telecommunication that processing obtains that is provided with on the wiring board and the most at last the signal of telecommunication pass in the external circuit.
For the unidirectional capacitive microphone of the above-mentioned traditional structure of decaying makes microphone unit have directive property from the sound that wiring board flows into, generally need in microphone unit, be provided with damping material.As open day was the disclosed a kind of technical scheme of Chinese patent CN2645392 on August 18th, 2004: metal connector (the being becket) inboard at the lid shape is provided with polytetrafluoroethylene filter (being damping device).This design, though guaranteed the one-way effect of microphone unit, but the microphone unit damping device of this structure is unfavorable for assembling, the production technology of microphone unit is comparatively complicated, be unfavorable for the reduction of production cost, and the acoustic resistance size can not be difficult to satisfy the performance requirement of different product according to the actual real-time regulated of carrying out.So be necessary the uni-directional microphone unit of above-mentioned traditional structure is further improved, to avoid above-mentioned bad phenomenon.
The utility model content
Technical problem to be solved in the utility model provides a kind of uni-directional microphone, when simplifying the damping device packaging technology of microphone unit, reduced the production cost of microphone unit, improved production efficiency, and the acoustic resistance size can be regulated according to actual, has satisfied the performance requirement of different product.
For solving the problems of the technologies described above, the technical scheme that the utility model proposed is: a kind of uni-directional microphone, comprise wiring board and the cylindrical case that combines with described wiring board, the bottom of described wiring board and described shell is respectively equipped with sound hole, and described wiring board and described shell form the protective device of uni-directional microphone; Sound hole on the corresponding described shell in the inside of described protective device is provided with capacitance component, and described capacitance component comprises vibrating diaphragm, pole plate and the seal between described vibrating diaphragm and pole plate that is oppositely arranged, and described pole plate is provided with air vent hole; Also be provided with electric installation in the described protective device and with the spacer assembly of described electric installation and shell electric insulation; Described capacitance component is electrically connected on the wiring board by described electric installation and described shell respectively, and: described pole plate is provided with damping device away from the surface of described vibrating diaphragm, is combined with the acoustic resistance adjusting device that has perforate on the described damping device.
As a kind of improvement, gummed is fixing between described damping device and the described pole plate.
As further improvement, described damping device is a foam.
As further improvement, the perforate on air vent hole on the described pole plate and the described acoustic resistance adjusting device is crisscross arranged.
As further improvement, described acoustic resistance adjusting device is a rubber cushion.
As further improvement, the air vent hole on the described pole plate is set to a plurality of, and the perforate on the described acoustic resistance adjusting device is set to one.
Improve as another kind, the air vent hole on the described pole plate is set to one, and the perforate on the described acoustic resistance adjusting device is set to a plurality of.
As a kind of improvement of above-mentioned all technical schemes, described acoustic resistance adjusting device and described damping device are fixing by gummed.
As further improvement, described seal is the insulation shading ring.
As further improving, described electric installation is a becket again, and described spacer assembly is set to the insulation cavity ring of annular.
Owing to adopted technique scheme: a kind of uni-directional microphone, comprise wiring board and the cylindrical case that combines with described wiring board, the bottom of described wiring board and described shell is respectively equipped with sound hole, and described wiring board and described shell form the protective device of uni-directional microphone; Sound hole on the corresponding described shell in the inside of described protective device is provided with capacitance component, and described capacitance component comprises vibrating diaphragm, pole plate and the seal between described vibrating diaphragm and pole plate that is oppositely arranged, and described pole plate is provided with air vent hole; Also be provided with electric installation in the described protective device and with the spacer assembly of described electric installation and shell electric insulation; Described capacitance component is electrically connected on the wiring board by described electric installation and described shell respectively, and: described pole plate is provided with damping device away from the surface of described vibrating diaphragm, is combined with the acoustic resistance adjusting device that has perforate on the described damping device.The beneficial effects of the utility model are: this design can be simplified the damping device packaging technology of microphone unit, reduces the production cost of microphone unit, enhances productivity.
Description of drawings
Fig. 1 is the generalized section of the utility model embodiment one;
Fig. 2 is the vertical view of the utility model embodiment one pole plate;
Fig. 3 is the generalized section of the utility model embodiment one damping device and acoustic resistance adjusting device;
Fig. 4 is the vertical view of the utility model embodiment one acoustic resistance adjusting device;
Fig. 5 is the generalized section of the utility model embodiment two;
Fig. 6 is the vertical view of the utility model embodiment two pole plates;
Fig. 7 is the vertical view of the utility model embodiment two acoustic resistance adjusting devices.
Embodiment
Embodiment one:
Be illustrated in figure 1 as a kind of uni-directional microphone of minisize condenser type, comprise shell 1 and wiring board 2, shell 1 is the peviform structure of a columnar end opening, and its material is a metal, is provided with sound hole 11 in the bottom of shell 1; Wiring board 2 is provided with pad 21, sound hole 23 and electronic component 22; opening one end of shell 1 is combined together to form the protective device of microphone unit by crimping and described wiring board 2, and electronic component 22 is arranged on the inner surface of wiring board 2 of described protective device.
Corresponding sound hole 11 is provided with capacitance component in the described protective device, capacitance component in the present embodiment is set to plane-parallel capacitor, and plane-parallel capacitor comprises vibrating diaphragm 31 (generally also being combined with becket 32 in the known technology), insulation shading ring 33 and the pole plate 34 that combines and be provided with from bottom to top; Also be provided with annular insulation cavity ring 4 and becket 5 on cylindrical case 1 madial wall with one heart, insulation cavity ring 4 is with shell 1 and becket 5 electric insulations.
As shown in Figure 2, pole plate 34 is provided with the air vent hole 341 of four uniform Design, and pole plate 34 is provided with the damping device 6 of covering pole plate 34 away from the surface of vibrating diaphragm 31; Damping device 6 is the foam material, can combine by glue-line 8 grades and pole plate 34, on damping device 6, also be provided with the acoustic resistance adjusting device, the acoustic resistance adjusting device comprises the rubber cushion 7 that has perforate 71, the structure of rubber cushion 7 as shown in Figure 4, perforate 71 is positioned at the centre of rubber cushion 7, with with pole plate 34 on perforate 341 be crisscross arranged, thereby form acoustic resistance effect preferably, can realize adjusting by the size of regulating perforate 71, avoid and to regulate acoustic resistance by the air vent hole of regulating on the pole plate 34 341 miniature uni-directional microphone unit acoustic resistance size; As shown in Figure 3, all be provided with glue-line 8 between rubber cushion 7 and the damping device 6 and between damping device 6 and the pole plate 34, thereby they are fixed together by gummed respectively.
In this implementation process, damping device elder generation and acoustic resistance adjusting device combine, and then are assembled in the miniature uni-directional microphone unit, this design, and assembly technology is comparatively easy, helps the reduction of production cost; Simultaneously, owing on damping device, be provided with the acoustic resistance adjusting device, can improve the size of acoustic resistance according to different demands of actual production.
Embodiment two:
This implementation process is with the main distinction of above-mentioned implementation process: the structure of pole plate 34 and acoustic resistance adjusting device is different, as Fig. 5, Fig. 6 and shown in Figure 7, air vent hole 341 numbers of pole plate 34 are set to one in this implementation process, and are arranged on the centre of pole plate 34; The number of the perforate 71 on the acoustic resistance adjusting device is set to two, and is crisscross arranged with air vent hole 341, thereby forms acoustic resistance effect preferably.
This design of this implementation process, the number of air vent hole and perforate can be combined for other number, can realize the technique effect of above-mentioned implementation process equally.
In the enforcement of the invention, damping device also can be other material; The part that damping device also can be selected only to cover the pole plate air vent hole is provided with; Microphone unit also can be square other structure that waits, and the above-mentioned neither enforcement that influences the invention all is interpreted as protection range of the present utility model.
Claims (10)
1. a uni-directional microphone comprises wiring board and the cylindrical case that combines with described wiring board, and the bottom of described wiring board and described shell is respectively equipped with sound hole, and described wiring board and described shell form the protective device of uni-directional microphone; Sound hole on the corresponding described shell in the inside of described protective device is provided with capacitance component, and described capacitance component comprises vibrating diaphragm, pole plate and the seal between described vibrating diaphragm and pole plate that is oppositely arranged, and described pole plate is provided with air vent hole; Also be provided with electric installation in the described protective device and with the spacer assembly of described electric installation and shell electric insulation; Described capacitance component is electrically connected on the wiring board by described electric installation and described shell respectively, it is characterized in that: described pole plate is provided with damping device away from the surface of described vibrating diaphragm, is combined with the acoustic resistance adjusting device that has perforate on the described damping device.
2. a kind of uni-directional microphone as claimed in claim 1 is characterized in that: gummed is fixing between described damping device and the described pole plate.
3. a kind of uni-directional microphone as claimed in claim 2 is characterized in that: described damping device is a foam.
4. a kind of uni-directional microphone as claimed in claim 3 is characterized in that: the perforate on air vent hole on the described pole plate and the described acoustic resistance adjusting device is crisscross arranged.
5. a kind of uni-directional microphone as claimed in claim 4 is characterized in that: described acoustic resistance adjusting device is a rubber cushion.
6. a kind of uni-directional microphone as claimed in claim 5 is characterized in that: the air vent hole on the described pole plate is set to a plurality of, and the perforate on the described acoustic resistance adjusting device is set to one.
7. a kind of uni-directional microphone as claimed in claim 5 is characterized in that: the air vent hole on the described pole plate is set to one, and the perforate on the described acoustic resistance adjusting device is set to a plurality of.
8. as the described a kind of uni-directional microphone of the arbitrary claim of claim 1-7, it is characterized in that: described acoustic resistance adjusting device and described damping device are fixing by gummed.
9. a kind of uni-directional microphone as claimed in claim 8 is characterized in that: described seal is the insulation shading ring.
10. a kind of uni-directional microphone as claimed in claim 9 is characterized in that: described electric installation is a becket, and described spacer assembly is the insulation cavity ring of annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201030548U CN201639774U (en) | 2010-01-23 | 2010-01-23 | Unidirectional microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201030548U CN201639774U (en) | 2010-01-23 | 2010-01-23 | Unidirectional microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201639774U true CN201639774U (en) | 2010-11-17 |
Family
ID=43084282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201030548U Expired - Lifetime CN201639774U (en) | 2010-01-23 | 2010-01-23 | Unidirectional microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201639774U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191527A (en) * | 2017-07-31 | 2017-09-22 | 湖南菲尔斯特传感器有限公司 | A kind of damper for pressure sensor |
| CN109951781A (en) * | 2019-04-03 | 2019-06-28 | 创达电子(潍坊)有限公司 | Silicon microphone structure |
| CN110611851A (en) * | 2019-10-25 | 2019-12-24 | 歌尔科技有限公司 | Single-directional microphone |
-
2010
- 2010-01-23 CN CN2010201030548U patent/CN201639774U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191527A (en) * | 2017-07-31 | 2017-09-22 | 湖南菲尔斯特传感器有限公司 | A kind of damper for pressure sensor |
| CN109951781A (en) * | 2019-04-03 | 2019-06-28 | 创达电子(潍坊)有限公司 | Silicon microphone structure |
| CN110611851A (en) * | 2019-10-25 | 2019-12-24 | 歌尔科技有限公司 | Single-directional microphone |
| CN110611851B (en) * | 2019-10-25 | 2021-06-01 | 歌尔科技有限公司 | Single-directional microphone |
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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. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |
|
| CX01 | Expiry of patent term |