WO2010072142A1 - 一种电容式传声器 - Google Patents
一种电容式传声器 Download PDFInfo
- Publication number
- WO2010072142A1 WO2010072142A1 PCT/CN2009/075833 CN2009075833W WO2010072142A1 WO 2010072142 A1 WO2010072142 A1 WO 2010072142A1 CN 2009075833 W CN2009075833 W CN 2009075833W WO 2010072142 A1 WO2010072142 A1 WO 2010072142A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- board substrate
- frame
- condenser microphone
- holding member
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/04—Structural association of microphone with electric circuitry therefor
Definitions
- the present invention relates to the field of capacitive microphones.
- the miniature condenser microphones that have appeared on the market are generally in the size of several tens of cubic millimeters.
- the basic structure is formed by a metal casing and a circuit board.
- a protective frame is internally mounted with a plastic cavity for supporting and insulating.
- a metal gate ring is mounted inside the cavity for circuit conduction, and the gate ring is connected to the capacitor component because the internal parts are large in size and large in number.
- the existing patent CN200710129770.6 proposes a new structure condenser microphone, comprising a circuit board substrate and a frame forming a protection structure, the protection structure is provided with a sound hole for receiving external signals, and a vibrating film is sequentially installed inside, The spacer and the back plate maintain an elastic electrical connection between the elastic holding member formed of a spring material and the circuit board substrate, and the diaphragm can be electrically connected to the circuit board substrate through a circuit inside the frame.
- This product structure can reduce the size of the product to a certain extent.
- the back plate of the structure there is a certain gap between the back plate of the structure and the inner side wall of the frame, and the back plate can be freely moved inside the frame, and its position can only be It is ensured by the elasticity of the elastic retaining member.
- the back plate After the product is in a relatively stable state, the back plate can be stabilized by the elastic holding member and can maintain a good electrical connection with the circuit board substrate.
- the product is in a state of severe acceleration, such as a drop test, there may be various defects: The large impact force formed by the back plate completely acts on the elastic retaining member, causing the elastic retaining member to undergo excessive compression and excessive deformation, resulting in a decrease in rebound resilience.
- the electrical connection between the circuit board substrate and the back plate is unstable or even broken; the position of the circuit board near the center is caused by the installation of the amplifier device, and the large impact force is easily formed.
- the position of the board substrate mounting amplifier device is deformed to the side of the back plate, which is also liable to cause compression deformation of the holding member, which may eventually cause the back plate and the amplifier device to collide, thereby causing the destruction of the amplifier device and the like.
- the technical problem to be solved by the present invention is to provide a condenser microphone which is more reliable and can withstand large acceleration activities or impact without causing performance degradation or damage.
- the present invention provides a condenser microphone comprising a circuit board substrate, a housing fixedly coupled to the circuit board substrate, and an amplifier device, an elastic holding member, and a capacitor assembly disposed inside the microphone, wherein Providing an acoustic hole for receiving an external signal on the circuit board substrate or the housing; the elastic holding member is disposed on the amplifier device side or the capacitor assembly side, and the amplifier device and the capacitor assembly are respectively connected to the circuit board substrate Electrical connection, characterized by:
- the elastic holding member is provided with an auxiliary supporting member, and the vertical height of the auxiliary supporting member is larger than the height of the amplifier device, and smaller than the spacing between the capacitor assembly and the opposite inner wall of the microphone.
- the elastic holding member further includes a frame and a bent portion; and the capacitor assembly and the circuit board substrate are elastically electrically connected by the bent portion.
- the elastic holding member includes a frame parallel to a plane of the circuit board substrate and a bent portion extending from the end of the frame; the auxiliary supporting member is disposed on the frame.
- the elastic end portion of the bent portion has a rounded curved shape.
- the elastic holding member is an annular sheet frame structure having a curved curved surface, the bent portion is curved and curved, and the auxiliary supporting member is a projection provided on the frame.
- the capacitor assembly includes a metal ring sequentially mounted from an inner surface of the microphone
- a preferred structure is that the back plate passes between the elastic holding member and the circuit board substrate (1) Maintain an elastic electrical connection.
- the frame end is connected to the back plate, and the top of the bent portion is connected to the circuit board substrate.
- the condenser microphone further includes a metal hole disposed inside the sidewall of the housing, a metal layer disposed between the inner wall of the microphone and the metal ring, and the metal hole cooperates with the metal layer and the metal ring.
- the diaphragm and the circuit board substrate are electrically connected.
- the joint of the frame and the bent portion is a curved arc curve; a rounded convex portion is provided at a top end of the curved arched curved portion of the bent portion; at least two auxiliary support members are symmetrically distributed
- the auxiliary support member is an arcuate projection having a plurality of support legs.
- FIG. 1 is a schematic structural view showing a first embodiment of the present invention
- FIG. 2 is a schematic structural view of an elastic holding member according to a first embodiment of the present invention
- FIG. 3 is a schematic structural view of a product according to a first embodiment of the present invention subjected to an acceleration impact ⁇ ;
- FIG. 4 is a schematic structural view of a second embodiment of the present invention.
- Figure 5 is a schematic view showing the structure of an elastic holding member according to a second embodiment of the present invention.
- Figure 6 is a perspective view showing the elastic holding member of the second embodiment of the present invention.
- Figure 7 is a schematic view showing the structure of the product according to the second embodiment of the present invention subjected to acceleration shock ⁇ .
- FIG. 1 is a schematic view showing the structure of a first embodiment of the present invention.
- the external shape and the inner structure of the condenser microphone provided by the first embodiment are square, and a square-shaped circuit board frame 2 and a square circuit board bottom plate 3 with sound holes 32 constitute a shell.
- the body, the casing and a square circuit board substrate 1 on which the amplifier device 11 is mounted are combined to form a protective structure of a sandwich shape.
- the protection structure is internally provided with a capacitor assembly and an elastic holding member 4, wherein the capacitor assembly is mounted on one side of the microphone provided with the sound hole, and is electrically connected to the circuit board substrate 1 on the opposite side, and the elastic holding member 4 is mounted on the mounting There is one side of the amplifier device 11.
- the capacitor assembly includes a back plate 5, an isolating diaphragm 7, a diaphragm 61, and a metal ring 6 for fixing the diaphragm 61 from top to bottom.
- the isolation diaphragm is placed between the back plate 5 and the diaphragm 61 to form a parallel plate capacitor.
- the back plate 5 and the vibrating film 6 are electrically connected to the circuit board substrate, respectively.
- the elastic holding member 4 includes a frame 41 and a bent portion 42 which is mounted on the circuit board substrate 1 and surrounds In the amplifier device 11, the bent portion 42 is elastically contacted on the back plate 5, and the frame 41 is integrally formed with two symmetrically distributed auxiliary supporting members 43 which are perpendicular to the plane of the frame 41 and are column-shaped and located in the amplifier
- the side portion of the device 11 has a vertical height greater than the height of the amplifier device 11 and is smaller than the spacing between the circuit board substrate 1 and the back plate 5 that is not impacted by the microphone.
- the lower end of the auxiliary supporting member 43 does not contact the back plate 5, but is relatively closer to the back plate 5 than the amplifier device 11, so that the condenser microphone is subjected to the drawing 3, the acceleration a in the a direction, the bent portion 42 of the elastic holding member 4 will be deformed by the impact of the back plate 5, and the distance between the back plate 5 and the amplifier device 11 will be rapidly reduced, however when When the pitch is equal to the vertical height of the auxiliary support member 43, the back plate 5 will be in contact with and supported by the auxiliary support member 43, thereby avoiding the impact of the back plate 5 and the amplifier device 11, and avoiding the bent portion of the elastic holding member 4. 42 deformation is too large, causing the rebound resilience to drop, causing hidden dangers in the internal circuit connection of the product.
- the capacitor assembly in the present invention can be electrically connected to the board substrate 1 in various ways.
- a metal hole that can conduct electricity is disposed inside the circuit board frame 2, and a metal layer 31 extending to the metal hole is disposed between the inner wall of the microphone and the metal ring 6, so that the metal hole and the metal layer 31 on the circuit board bottom plate 3 are provided.
- the metal ring 6 is configured to electrically connect the diaphragm 61 and the circuit board substrate 1. That is, the diaphragm 61 is electrically connected to the circuit 12 on the circuit board substrate 1 through the metal ring 6, the metal layer 31 on the circuit board bottom plate 3, and the metal hole 21 provided inside the circuit board frame 2.
- the back plate 5 can be electrically connected to the circuit board substrate 1 through the bent portion 42 of the metallic elastic holding member 4 provided inside the microphone.
- the metal hole provided inside the wiring board frame 2 can be formed by a process of drilling a hole in the wiring board substrate.
- the elastic holding member 4 includes a frame 41 parallel to the plane of the circuit board substrate and a bent portion 42 extending from the side of the frame perpendicularly to the plane of the frame, the auxiliary supporting member 43 Vertically disposed on the frame 41, the auxiliary support member 43 can be ensured to have a relatively stable support, and can better serve as a support; the frame 41 is connected to the circuit board substrate 1, and the bent portion 42 is connected to the back plate. 5, structural and circuit connections are more stable.
- the elastic end portion of the bent portion 42 is designed to have a rounded curved end portion.
- the bumps of the rounded curved protrusions of the end portion are electrically connected to the back plate or the circuit board substrate.
- Elastic holding parts 4 How to install them specifically, can be flexibly designed according to the needs of actual products.
- the auxiliary supporting member 43 adopts a columnar support, and the elastic holding member 4 has an integral structure, and the auxiliary supporting member 43 can be designed as one to simplify the production process and reduce the production cost; or a plurality of symmetrically distributed designs can be used.
- the structure is stable and the support effect is good.
- the outer frame of the condenser microphone includes the casing and the circuit board substrate 1 composed of the circuit board frame 2 and the circuit board bottom plate 3, but those skilled in the art It is understood that the external frame of the condenser microphone can be packaged and implemented in various ways. The position of the circuit board, the setting of the sound hole and the installation position of the amplifier and the capacitor component can be flexibly designed according to the needs of production, installation or use. There are many other implementations of the condenser microphone provided in the first embodiment. The manner in which this embodiment is provided should not be limited to this specific technical solution provided by this embodiment.
- the second embodiment differs from the first embodiment in that the mounting position and design of the elastic holding member 4 are different.
- the frame 41 of the elastic holding member 4 is mounted on the side of the amplifier device 11 in the first embodiment
- the frame 41 of the elastic holding member 4 is mounted on the back plate of the capacitor assembly.
- the auxiliary supporting member 43 is also supported between the back plate and the inner wall of the microphone provided with the amplifier device at the deformation limit.
- the position in contact with the apex of the auxiliary supporting member is on the back plate 5, and in the second embodiment The position in contact with the apex of the auxiliary supporting member is on the wiring board substrate 1 on which the amplifier device is provided as the inner wall of the microphone.
- this mounting method can reduce the parallel area between the elastic holding member 4 and the circuit board substrate 1, and serves to better reduce the parasitic capacitance.
- the elastic holding member 4 is an annular sheet frame structure which is bent into a curved surface
- Figs. 5 and 6 are a schematic structural view and a perspective view, respectively, of the elastic holding member of the second embodiment.
- the elastic holding member 4 includes a substantially planar frame 41, a bent portion 42, a joint portion 44 of the joint frame 41 and the bent portion 42, and an auxiliary support portion 43.
- the frame 41, the bent portion 42 and the joint portion 44 together form an arched curved surface of a specific height (as shown in FIG. 5 and the hollow portion of the annular frame structure formed by the frame 41, the bent portion 42 and the joint portion 44 is slightly omitted) Larger than the cross section of the amplifier device 11, so that its annular structure can surround the periphery of the amplifier device 11.
- the auxiliary support portion 43 is an arcuate projection having a plurality of support legs integrally provided on the frame 41 of the elastic holding member 4, and the vertical height of the auxiliary support portion 43 is larger than the height of the amplifier device 11, which is smaller than the microphone is not subjected to impact.
- the elastic holding member 4 of such an annular frame structure surrounds the amplifier device 11, and the internal space of the condenser microphone can be fully utilized, so that the size of the condenser microphone product is further thinned, and the curved surface Elastic retaining member of the annular sheet frame structure is stable and elastic Good, more suitable for small size product applications.
- the joint portion 44 of the frame 41 and the bent portion 42 is curved in a rounded curve to ensure a better elastic effect;
- the auxiliary support member 43 is an arcuate projection having a plurality of support legs, and the structure is stable.
- the elastic retaining member in this embodiment can be integrally formed by a stamping process, and the process steps are simpler, which in turn reduces the production cost.
- FIG. 7 is a schematic view showing the structure of the product of the present embodiment subjected to acceleration shock ⁇ .
- the condenser microphone receives an acceleration a in the a direction
- the bent portion 42 of the elastic holding member 4 is deformed by the impact of the back plate 5, and the distance between the back plate 5 and the amplifier device 11 will be Rapidly decreasing, however, when the distance between the two is equal to the vertical height of the auxiliary supporting member 43, the circuit board substrate 1 will be in contact with and supported by the auxiliary supporting member 43, thereby preventing the back plate 5 and the amplifier device 11 from colliding,
- the deformation of the bent portion 42 of the elastic holding member 4 is prevented from being excessively large, resulting in a decrease in resilience performance, resulting in a hidden connection of the internal circuit of the product.
- the auxiliary support portion may be a bump formed by punching on the elastic holding member, or a projection of a certain height may be formed by other design and manufacturing methods as long as the vertical height thereof is larger than the height of the amplifier device 11.
- the pitch between the circuit board substrate 1 and the back plate 5 is smaller than when the microphone is not subjected to an impact.
- the elastic retaining member in the second embodiment is an annular frame structure, it is preferable to design the auxiliary support members to be at least two and symmetrically distributed so as to be subjected to pressure and to ensure a balance of force for optimal support. effect.
- bent portion 42 provides elastic electrical connection between the back plate 5 and the circuit board substrate 1, in order to ensure the quality of the electrical connection, a rounded convex portion is provided at the top end of the curved portion of the bent portion 42.
- the bumps of the rounded protrusions are electrically connected to the back plate or the circuit board substrate.
- the capacitor component can be electrically connected to the circuit board substrate 1 in various ways, such as the electrical connection mode, the auxiliary circuit, etc. in the first embodiment, and the electrical connection that can be adopted.
- the method can be flexibly selected according to the actual needs of the product under the overall inventive idea of the present invention, and should not depart from the scope of protection of the present invention.
- the external frame of the condenser microphone can be packaged and implemented in various ways, wherein the position of the circuit board, the setting of the sound hole, and the installation position of the amplifier and the capacitor component can be flexibly designed according to the needs of production, installation or use, nor This specific technical solution provided by this embodiment should be emphasized.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020107018196A KR101153489B1 (ko) | 2008-12-23 | 2009-12-22 | 콘덴서 마이크로폰 |
| US12/933,318 US8693712B2 (en) | 2008-12-23 | 2009-12-22 | Condenser microphone |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202328843U CN201323651Y (zh) | 2008-12-23 | 2008-12-23 | 电容式传声器 |
| CN200820232884.3 | 2008-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010072142A1 true WO2010072142A1 (zh) | 2010-07-01 |
Family
ID=41161022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2009/075833 Ceased WO2010072142A1 (zh) | 2008-12-23 | 2009-12-22 | 一种电容式传声器 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8693712B2 (zh) |
| KR (1) | KR101153489B1 (zh) |
| CN (1) | CN201323651Y (zh) |
| WO (1) | WO2010072142A1 (zh) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201323651Y (zh) * | 2008-12-23 | 2009-10-07 | 歌尔声学股份有限公司 | 电容式传声器 |
| US20130044899A1 (en) * | 2011-08-15 | 2013-02-21 | Harman International Industries, Inc. | Dual Backplate Microphone |
| KR101296714B1 (ko) * | 2011-11-10 | 2013-08-20 | 경북대학교 산학협력단 | 중이 특성이 반영된 정원창 구동 진동체 및 이를 이용한 보청기 |
| US9253555B2 (en) * | 2014-02-18 | 2016-02-02 | Htc Corporation | Portable electronic apparatus |
| US9137918B2 (en) | 2012-09-28 | 2015-09-15 | Htc Corporation | Electronic apparatus and method for assembling the same |
| US9332329B2 (en) | 2012-09-28 | 2016-05-03 | Htc Corporation | Electronic apparatus |
| DE102014106503B4 (de) * | 2014-05-08 | 2016-03-03 | Epcos Ag | Verfahren zur Herstellung eines Mikrofons |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1822721A (zh) * | 2005-12-14 | 2006-08-23 | 潍坊歌尔电子有限公司 | 一种电容式传声器 |
| CN101115327A (zh) * | 2006-07-25 | 2008-01-30 | 星精密株式会社 | 电容式传声器 |
| CN101257736A (zh) * | 2008-03-01 | 2008-09-03 | 歌尔声学股份有限公司 | 微型电容式传声器 |
| CN201323651Y (zh) * | 2008-12-23 | 2009-10-07 | 歌尔声学股份有限公司 | 电容式传声器 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3947647A (en) * | 1974-03-21 | 1976-03-30 | E. F. Johnson Company | Microphone having improved transducer support |
| JP3524754B2 (ja) * | 1998-02-27 | 2004-05-10 | 株式会社オーディオテクニカ | マイクロホン |
| DE19913660C2 (de) * | 1999-03-25 | 2001-08-30 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Befestigung elektrischer Bauelemente |
| KR200233032Y1 (ko) * | 2001-02-12 | 2001-09-28 | 이석순 | 마이크로폰 |
| US7062058B2 (en) * | 2001-04-18 | 2006-06-13 | Sonion Nederland B.V. | Cylindrical microphone having an electret assembly in the end cover |
| US7342743B2 (en) * | 2003-03-31 | 2008-03-11 | Matsushita Electric Industrial Co., Ltd. | Shock-absorbing member, shock-absorbing method of electronic device employing the member, and electronic device adapting the member and the method |
| KR20080017257A (ko) * | 2006-08-21 | 2008-02-26 | 스타 마이크로닉스 컴퍼니 리미티드 | 콘덴서 마이크로폰 |
-
2008
- 2008-12-23 CN CNU2008202328843U patent/CN201323651Y/zh not_active Expired - Lifetime
-
2009
- 2009-12-22 KR KR1020107018196A patent/KR101153489B1/ko active Active
- 2009-12-22 US US12/933,318 patent/US8693712B2/en active Active
- 2009-12-22 WO PCT/CN2009/075833 patent/WO2010072142A1/zh not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1822721A (zh) * | 2005-12-14 | 2006-08-23 | 潍坊歌尔电子有限公司 | 一种电容式传声器 |
| CN101115327A (zh) * | 2006-07-25 | 2008-01-30 | 星精密株式会社 | 电容式传声器 |
| CN101257736A (zh) * | 2008-03-01 | 2008-09-03 | 歌尔声学股份有限公司 | 微型电容式传声器 |
| CN201323651Y (zh) * | 2008-12-23 | 2009-10-07 | 歌尔声学股份有限公司 | 电容式传声器 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110044479A1 (en) | 2011-02-24 |
| KR101153489B1 (ko) | 2012-06-11 |
| CN201323651Y (zh) | 2009-10-07 |
| KR20100108434A (ko) | 2010-10-06 |
| US8693712B2 (en) | 2014-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11212623B2 (en) | Piezoelectric MEMS microphone | |
| US7260230B2 (en) | High performance microphone and manufacturing method thereof | |
| WO2010072142A1 (zh) | 一种电容式传声器 | |
| WO2007083894A1 (en) | Condenser microphone for inserting in mainboard and potable communication device including the same | |
| CN215453273U (zh) | 一种麦克风组件及电子设备 | |
| CN115474144B (zh) | 微机电系统麦克风 | |
| US8144898B2 (en) | High performance microphone and manufacturing method thereof | |
| CN211152208U (zh) | 一种mems麦克风 | |
| EP3435685A1 (en) | Diaphragm and manufacturing method for diaphragm | |
| CN104620604A (zh) | 声响转换器 | |
| CN114885264B (zh) | 一种麦克风组件及电子设备 | |
| CN1706218B (zh) | 可安装在主pcb上的电容式传声器 | |
| CN202135316U (zh) | 一种微型电容式麦克风 | |
| KR20150103454A (ko) | 마이크로폰 패키지 | |
| CN220108197U (zh) | 一种电容式mems麦克风 | |
| US20060245606A1 (en) | Electret condenser microphone and manufacturing method thereof | |
| JP2008028946A (ja) | コンデンサマイクロホン | |
| CN222814599U (zh) | Mems麦克风芯片 | |
| WO2021012610A1 (zh) | 一种防尘帽组件及超薄喇叭 | |
| CN219577243U (zh) | 一种具有防共振效果的扬声器 | |
| CN202135317U (zh) | 一种微型电容式麦克风 | |
| CN201910914U (zh) | 电容式麦克风 | |
| CN201479362U (zh) | 驻极体电容麦克风 | |
| TWI244871B (en) | High performance capacitor microphone and manufacturing method thereof | |
| CN201114765Y (zh) | 驻极体麦克风 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENP | Entry into the national phase |
Ref document number: 20107018196 Country of ref document: KR Kind code of ref document: A |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09834095 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 12933318 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 09834095 Country of ref document: EP Kind code of ref document: A1 |