CN202135316U - Miniature condenser microphone - Google Patents
Miniature condenser microphone Download PDFInfo
- Publication number
- CN202135316U CN202135316U CN2011202144521U CN201120214452U CN202135316U CN 202135316 U CN202135316 U CN 202135316U CN 2011202144521 U CN2011202144521 U CN 2011202144521U CN 201120214452 U CN201120214452 U CN 201120214452U CN 202135316 U CN202135316 U CN 202135316U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- base plate
- wiring board
- capacitance type
- type microphone
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 33
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Abstract
The present utility model discloses a miniature condenser microphone. The microphone comprises an outer protection structure which is composed of a circuit board substrate provided with electronic components, a hollow first circuit board framework and a bottom plate. One end of the first circuit board framework is fixedly arranged on the circuit board substrate, a vibrating diaphragm is fixedly arranged on the other end, an electrode plate is arranged inside one side of the protection structure, which is near the bottom plate, and a separating sheet is arranged between the vibrating diaphragm and the electrode plate. By adopting the design, parts are reduced, an elastic device with reliability hidden troubles is abandoned, the smaller dimension can be realized, the assembling technology is simple, the design is convenient for the automatic production, the production cost is low, and the product reliability is good.
Description
Technical field
The utility model relates to a kind of mini microphone, is a kind of miniature capacitance type microphone specifically.
Background technology
Along with electronic products such as mobile phone, notebook, hearing aids are more and more littler to the dimensional requirement of inner body, take measurements greatly less, quality is better and lower-cost miniature capacitance type microphone is employed.At present, the miniature capacitance type microphone volume that has occurred on the market is generally on tens cubic millimeters size, under this size; If according to traditional miniature capacitance type microphone design, basic structure is that a metal shell and a wiring board form a bearer bar, and inside is equipped with the plastic chamber that plays support, insulating effect; Inside cavity is equipped with the metal grating ring and is used for circuit turn-on, and grating ring connects pole plate, and pole plate forms capacitance component through an insulation diaphragm and vibrating diaphragm; Because the size of its inner body is big, quantity is more; Certainly will influence properties of product, on rule, exist contradictory relation between the size of product and the performance.So; Have new design to propose to use an elastic sheet metal or spring to replace original grating ring, this can improve properties of product to a certain extent, and the elastic part size of this structure applications is minimum but the problem that exists is; Assembly technology is complicated, part production difficulty is big, cost is high, product reliability is not enough; And the difficulty of automated production strengthens, and this constructed products, the highly constrained further reduction of product total height of elastic part.And in this structure, need also take certain height and space, influence the reduction of product height at the electronic devices and components such as amplifier of circuit base board installed inside.
So, need design a kind of can reach lower size, assembly technology simple, be convenient to automated production, production cost is low, product reliability is good new construction miniature capacitance type microphone.
The utility model content
The utility model technical problem to be solved provide a kind of can reach lower size, assembly technology simple, be convenient to automated production, production cost is low, product reliability is good new construction miniature capacitance type microphone.
For solving the problems of the technologies described above; The technical scheme of the utility model is: a kind of miniature capacitance type microphone; Comprise the wiring board substrate that electronic devices and components are installed, first circuit board frame and the base plate composition outer protection structure of hollow, an end of said first circuit board frame is fixedly installed on the said wiring board substrate, and the other end is set with vibrating diaphragm; The protection inside configuration is equipped with pole plate near a side of said base plate, is provided with spacer between said vibrating diaphragm and the said pole plate.
The improvement of present technique scheme is, connects through annular glue-line between said first circuit board frame and the said base plate.
The improvement of present technique scheme is, connects through second circuit board frame between said first circuit board frame and the said base plate.
The improvement of present technique scheme is that the said first circuit board frame madial wall is provided with the inner metal layer that connects said vibrating diaphragm and said wiring board substrate.
The improvement of present technique scheme is that said inner metal layer distributes for the vertical bar shape.
The improvement of present technique scheme is that the said first circuit board frame lateral wall is provided with the outer metal level of annular that connects said base plate and said wiring board substrate.
The improvement of present technique scheme is that the said first circuit board frame set inside connects the plated-through hole of said vibrating diaphragm and said wiring board substrate.
The improvement of present technique scheme is that said base plate is the wiring board base plate, and the surface that said wiring board base plate contacts with said pole plate is provided with the protruding metal layer, and the protruding metal layer supports between said wiring board base plate and the said pole plate and forms the air gap.
Owing to adopted technique scheme; A kind of miniature capacitance type microphone; Comprise the wiring board substrate that electronic devices and components are installed, first circuit board frame and the base plate composition outer protection structure of hollow, an end of said first circuit board frame is fixedly installed on the said wiring board substrate, and the other end is set with vibrating diaphragm; The protection inside configuration is equipped with pole plate near a side of said base plate, is provided with spacer between said vibrating diaphragm and the said pole plate; This design has reduced part, has removed the elastic device with reliability hidden danger, can reach lower size, assembly technology simple, be convenient to automated production, production cost is low, product reliability good.
Description of drawings
Fig. 1 is the generalized section of the utility model case study on implementation one.
Fig. 2 is the floor map of the utility model case study on implementation one first circuit board frame.
Fig. 3 is the generalized section of the utility model case study on implementation two.
Fig. 4 is the generalized section of the utility model case study on implementation three.
Embodiment
Case study on implementation one
The generalized section of having represented the utility model case study on implementation one like Fig. 1; The floor map of Fig. 2 the utility model case study on implementation one first circuit board frame.These patterns have been represented the product structure of the utility model case study on implementation one.
The external shape of the miniature capacitance type microphone that this case study on implementation provides is square; First circuit board frame 2 and a square wiring board base plate 3 of comprising square wiring board substrate 1 that electronic devices and components 11 are installed, hollow combine and form the protection structure; The upper end of first circuit board frame 2 is fixedly installed on the wiring board substrate 1; The lower end is set with vibrating diaphragm 23; The protection inside configuration is equipped with pole plate 4 near a side of base plate, and pole plate 4 is provided with hole 41, is provided with spacer 5 between vibrating diaphragm 23 and the pole plate 4.The base material of wiring board is preferably the resin material of insulation.Between first circuit board frame 1 and base plate 3, connect, and glue-line 6 provides the space of pole plate 4 with spacer 5 installations through annular glue-line 6.
In this case study on implementation; The profile of first circuit board frame 2 is square frame shapes; The inside holes general shape is square; Metal level 21, inner surface that its outer surface is provided with annular are provided with annular metal level 22, and the upper end of metal level 21 and metal level 22 is conducted electricity respectively and is connected on the wiring board substrate 1, and vibrating diaphragm 23 is arranged on first circuit board frame, 2 lower ends by predetermined fixed and is connected with metal level 22.
In this case study on implementation, annular glue-line 6 is a conducting resinl, is connected with metal level 21 conductions of first circuit board frame, 2 outer surfaces.
In this case study on implementation; Base plate 3 is the wiring board base plate; Wiring board base plate 3 is provided with the sound hole 31 that is used to receive the external sound signal, and the surface that wiring board base plate 3 contacts with pole plate 4 is provided with protruding metal layer 32, and protruding metal layer 32 supports between wiring board base plate 3 and the pole plate 4 and forms the air gap; Thereby can be so that the outside sound signal is through forming the air gap between sound hole 31, wiring board base plate 3 and the pole plate 4, and the hole 41 that sees through on the pole plate 4 affacts on the vibrating diaphragm 23.
In this case study on implementation, vibrating diaphragm 23 can be electrically connected to wiring board substrate 1 through metal level 22 as an electrode of miniature capacitance type microphone capacitance component; Pole plate 4 can be electrically connected to wiring board substrate 1 through protruding metal layer 32, annular glue-line 6 and metal level 21 as another electrode of miniature capacitance type microphone capacitance component.Vibrating diaphragm 23 produces vibration after receiving the external sound signal; The signal of telecommunication that capacitance component produces can be passed on the wiring board substrate 1; And be connected to electronic devices and components 11 through the circuit (not shown) on the wiring board substrate 1; Electronic devices and components 11 are generally amplifying devices such as FET, amplifier, can realize that signal amplifies, and final miniature capacitance type microphone has been realized the conversion of sound-electricity.
The shape of obvious this each part of product structure is all comparatively regular, number of parts is few, and the vibrating diaphragm and first circuit board frame are integrated in advance, are easy to use automated production, enhance productivity; Through simplifying the internal structure of product, can be so that the height of product and the area of plane can reduce significantly, and do not sacrifice performance of products, can guarantee the needed product of better products performance inner space.
In this case study on implementation, the metal level 21 in first circuit board frame, 2 outsides can guarantee anti-preferably electromagnetic interference effect.
In this case study on implementation, first circuit board frame, 2 inboard metal levels 22 can be chosen as annular, can be chosen as the vertical bar shape and distribute, and the metal level 22 that the vertical bar shape distributes can reduce the parasitic capacitance of product, improves product sensitivity, improves acoustical behavior.。
Case study on implementation two
The generalized section of having represented the utility model case study on implementation two like Fig. 3.
With respect to case study on implementation one; This case study on implementation first circuit board frame 2 outer surfaces are provided with the metal level 21 of annular, the plated-through hole 24 that set inside connects vibrating diaphragm 23 and wiring board substrate 1; The upper end conduction of plated-through hole 24 is connected on the wiring board substrate 1, and the lower end conduction connects vibrating diaphragm 23.
With respect to case study on implementation one, the plated-through hole manufacture craft that this case study on implementation mode needs belongs to conventional process in the circuit board technique, realize simply, and this design can realize reducing the effect of product parasitic capacitance.
Case study on implementation three
The generalized section of having represented the utility model case study on implementation three like Fig. 4.
With respect to case study on implementation two, connect through second circuit board frame 7 between this case study on implementation first circuit board frame 2 and the base plate 3.Second circuit board frame 7 also is a square frame shape, and its inner aperture is greater than the aperture, inside of first circuit board frame 2, thus the space that can realize installing capacitance component, the making high conformity of this structure.Second circuit board frame, 7 set inside have metal level 71, and metal level 71 can link together the metal level 32 on metal level on first circuit board frame 21 and the wiring board base plate 3, thereby pole plate is electrically connected on the wiring board substrate 1.And metal level 71 is preferably annular setting, can play electromagnetic shielding action preferably.
Under the above-mentioned instruction of the utility model; Those skilled in the art can carry out various improvement and distortion on the basis of above-mentioned case study on implementation; And these improvement and distortion all drop in the protection range of the utility model, and those skilled in the art should be understood that; Above-mentioned specific descriptions are just better explained the purpose of the utility model, and the protection range of the utility model is limited claim and equivalent thereof.
Claims (8)
1. miniature capacitance type microphone; It is characterized in that; Comprise the wiring board substrate that electronic devices and components are installed, first circuit board frame and the base plate composition outer protection structure of hollow, an end of said first circuit board frame is fixedly installed on the said wiring board substrate, and the other end is set with vibrating diaphragm; The protection inside configuration is equipped with pole plate near a side of said base plate, is provided with spacer between said vibrating diaphragm and the said pole plate.
2. miniature capacitance type microphone as claimed in claim 1 is characterized in that, connects through annular glue-line between said first circuit board frame and the said base plate.
3. miniature capacitance type microphone as claimed in claim 2 is characterized in that, connects through second circuit board frame between said first circuit board frame and the said base plate.
4. like the described miniature capacitance type microphone of the arbitrary claim of claim 1-3, it is characterized in that the said first circuit board frame madial wall is provided with the inner metal layer that connects said vibrating diaphragm and said wiring board substrate.
5. miniature capacitance type microphone as claimed in claim 4 is characterized in that, said inner metal layer distributes for the vertical bar shape.
6. like the described miniature capacitance type microphone of the arbitrary claim of claim 1-3, it is characterized in that the said first circuit board frame lateral wall is provided with the outer metal level of annular that connects said base plate and said wiring board substrate.
7. like the described miniature capacitance type microphone of the arbitrary claim of claim 1-3, it is characterized in that the said first circuit board frame set inside connects the plated-through hole of said vibrating diaphragm and said wiring board substrate.
8. miniature capacitance type microphone as claimed in claim 1; It is characterized in that; Said base plate is the wiring board base plate, and the surface that said wiring board base plate contacts with said pole plate is provided with the protruding metal layer, and the protruding metal layer supports between said wiring board base plate and the said pole plate and forms the air gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202144521U CN202135316U (en) | 2010-10-12 | 2011-06-23 | Miniature condenser microphone |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020557751.0 | 2010-10-12 | ||
| CN201020557751 | 2010-10-12 | ||
| CN2011202144521U CN202135316U (en) | 2010-10-12 | 2011-06-23 | Miniature condenser microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202135316U true CN202135316U (en) | 2012-02-01 |
Family
ID=45337717
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202144521U Expired - Lifetime CN202135316U (en) | 2010-10-12 | 2011-06-23 | Miniature condenser microphone |
| CN2011101705133A Pending CN102291660A (en) | 2010-10-12 | 2011-06-23 | Miniature capacitive microphone |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101705133A Pending CN102291660A (en) | 2010-10-12 | 2011-06-23 | Miniature capacitive microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN202135316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291660A (en) * | 2010-10-12 | 2011-12-21 | 歌尔声学股份有限公司 | Miniature capacitive microphone |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446147A (en) * | 2019-07-26 | 2019-11-12 | 歌尔股份有限公司 | Microphone packaging scheme and preparation method |
| CN111422825B (en) * | 2020-06-11 | 2020-09-22 | 潍坊歌尔微电子有限公司 | Method for manufacturing sensor |
| CN213694149U (en) * | 2020-12-18 | 2021-07-13 | 青岛歌尔智能传感器有限公司 | MEMS chip, MEMS microphone and electronic equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200330089Y1 (en) * | 2003-07-29 | 2003-10-11 | 주식회사 비에스이 | Integrated base and electret condenser microphone using the same |
| KR100673846B1 (en) * | 2005-07-08 | 2007-01-24 | 주식회사 비에스이 | Electret Microphone Include Washer Spring |
| CN101080109B (en) * | 2007-06-14 | 2011-12-07 | 宁波鑫丰泰电器有限公司 | Front pole capacitance microphone |
| CN101729970A (en) * | 2008-10-21 | 2010-06-09 | 同欣电子工业股份有限公司 | Micro-electro-mechanical microphone packaging process |
| CN201323650Y (en) * | 2008-12-03 | 2009-10-07 | 歌尔声学股份有限公司 | Diaphragm device of a mini-microphone |
| CN201509311U (en) * | 2009-09-27 | 2010-06-16 | 歌尔声学股份有限公司 | Micro-capacitance type microphone |
| CN202135316U (en) * | 2010-10-12 | 2012-02-01 | 歌尔声学股份有限公司 | Miniature condenser microphone |
-
2011
- 2011-06-23 CN CN2011202144521U patent/CN202135316U/en not_active Expired - Lifetime
- 2011-06-23 CN CN2011101705133A patent/CN102291660A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291660A (en) * | 2010-10-12 | 2011-12-21 | 歌尔声学股份有限公司 | Miniature capacitive microphone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102291660A (en) | 2011-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202135316U (en) | Miniature condenser microphone | |
| CN102075838B (en) | Electret microphone | |
| CN201323651Y (en) | Capacitor microphone | |
| US8411881B2 (en) | Electret capacitor microphone with one-piece vocal cavity component | |
| CN201210744Y (en) | Miniature capacitor type microphone | |
| CN203748005U (en) | MEMS microphone | |
| CN205693884U (en) | A kind of Microspeaker with double washer structure | |
| CN102075841B (en) | Electret microphone | |
| CN204929247U (en) | Moving -coil loudspeaker | |
| CN101227767A (en) | Minitype moving-coil type electro-acoustic conversing device | |
| CN101257736B (en) | Miniature capacitor type microphone | |
| CN202085303U (en) | Silicon microphone | |
| CN202135317U (en) | Miniature condenser microphone | |
| CN201509311U (en) | Micro-capacitance type microphone | |
| CN204206460U (en) | A kind of MEMS microphone | |
| CN101257737B (en) | Miniature capacitance type microphone | |
| CN201869360U (en) | Capacitance type microphone | |
| CN201153323Y (en) | Micro moving-coil type electro-acoustic conversion device | |
| CN202679614U (en) | Electret capacitance-type microphone | |
| CN201383872Y (en) | Separator of condenser microphone | |
| CN202395984U (en) | Capacitance type electret microphone | |
| CN202059565U (en) | Anterior pole capacitance microphone having directionality | |
| CN201167414Y (en) | Miniature capacitance microphone | |
| CN202231836U (en) | Mini capacitive microphone having simple structure | |
| CN201509300U (en) | Minitype movable ring type electro-acoustic transformer |
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: 20120201 |
|
| CX01 | Expiry of patent term |