CN209375908U - Microphone device - Google Patents

Microphone device Download PDF

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Publication number
CN209375908U
CN209375908U CN201822278809.7U CN201822278809U CN209375908U CN 209375908 U CN209375908 U CN 209375908U CN 201822278809 U CN201822278809 U CN 201822278809U CN 209375908 U CN209375908 U CN 209375908U
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CN
China
Prior art keywords
vibrating diaphragm
frame
microphone device
fixed
voice coil
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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
Application number
CN201822278809.7U
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Chinese (zh)
Inventor
梁平
赵彬
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AAC Technologies Holdings Shenzhen Co Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
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Priority to CN201822278809.7U priority Critical patent/CN209375908U/en
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Publication of CN209375908U publication Critical patent/CN209375908U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model provides microphone device, it includes frame and the vibrational structure for being individually fixed in the frame and the magnetic structure with magnetic gap, vibrational structure includes the upper vibrating diaphragm for being fixed on frame, is inserted in magnetic gap to drive the voice coil of upper diaphragm oscillations sounding and be fixed on frame and lower vibrating diaphragm opposite and spaced with upper vibrating diaphragm, upper vibrating diaphragm, lower vibrating diaphragm and frame surround epicoele jointly, the side away from upper vibrating diaphragm of lower vibrating diaphragm surrounds cavity of resorption with frame jointly, lower vibrating diaphragm is porous damping piece, and epicoele is connected with cavity of resorption by the duct of porous damping piece.It is excessive to will appear pressure difference between the two spaces of space under the microphone device of the utility model solves in microphone device in the prior art between the down space and lower vibrating diaphragm and upper vibrating diaphragm of vibrating diaphragm, leakage not enough, leads to the problems not up to standard such as product Q value, SPL.

Description

Microphone device
[technical field]
The utility model relates to acoustic equipment technical field more particularly to a kind of microphone devices.
[background technique]
In order to adapt to miniaturization, the multifunction development of various stereo sets and information communication device, institute in such equipment The microphone device used more steps up in requisition for more tending to minimize, and with the cooperation of microphone device periphery other elements It gathers, in particular with the lightening growth requirement of smart phone, wherein used microphone device, does not require nothing more than miniaturization, more want Ask high tone quality and stereophonic effect etc..However, microphone device in the prior art due to having adapted to Miniaturization Design requirement and Sacrifice corresponding operatic tunes space, also, the two skies of the space between the down space of lower vibrating diaphragm and lower vibrating diaphragm and upper vibrating diaphragm Between divided by lower vibrating diaphragm, during vibration sounding, it is excessive to will appear pressure difference between the two spaces, and leakage not enough, causes Product Q value, SPL etc. be not up to standard.
[utility model content]
The purpose of this utility model is to provide a kind of microphone devices, it is intended to solve lower vibration in microphone device in the prior art It is excessive to will appear pressure difference between the two spaces of space between the down space of film and lower vibrating diaphragm and upper vibrating diaphragm, leakage is not It is enough, lead to the problems not up to standard such as product Q value, SPL.
The technical solution of the utility model is as follows:
A kind of microphone device provided in this embodiment comprising frame and the vibrational structure for being individually fixed in the frame And the magnetic structure with magnetic gap, vibrational structure include the upper vibrating diaphragm for being fixed on frame, are inserted in magnetic gap to drive upper vibration The voice coil of film vibration sounding and it is fixed on frame and opposite with upper vibrating diaphragm and spaced lower vibrating diaphragm, upper vibrating diaphragm, lower vibrating diaphragm And frame surrounds epicoele jointly, the side away from upper vibrating diaphragm of lower vibrating diaphragm surrounds cavity of resorption with frame jointly, and lower vibrating diaphragm is porous Damping piece, epicoele are connected with cavity of resorption by the duct of porous damping piece.
Preferably, lower vibrating diaphragm includes glued the first fixed part for being fixed on voice coil, is extended from the first fixed part to frame Ring portion and extend from ring portion to frame and glued the second fixed part for being fixed on frame, ring portion is to far from upper vibrating diaphragm Direction bending protrusion.
Preferably, the aperture in the duct on porous damping piece is 10um~2000um.
It preferably, include multiple laser holes through lower vibrating diaphragm on lower vibrating diaphragm.
Preferably, lower vibrating diaphragm is symmetrically disposed on the opposite sides of voice coil.
Preferably, voice coil includes the short axle portion of the long axle portion being oppositely arranged and the long axle portion of connection, and lower vibrating diaphragm includes two And it is symmetrically disposed on short axle portion.
Preferably, vibrational structure further includes reinforcement supporting member, and reinforcement supporting member includes the connector for being fixedly connected on frame Section is fixedly connected on voice coil away from the middle spring undertaking of the supporting section of upper vibrating diaphragm one end and connection connection head section and supporting section Section, reinforcement supporting member and lower diaphragm position correspond.
Preferably, connection head section sandwiched be fixed between frame and the second fixed part, supporting section sandwiched be fixed on voice coil with Between first fixed part, middle spring undertaking section is between upper vibrating diaphragm and lower vibrating diaphragm.
Preferably, microphone device further includes top dome, and the middle part of upper vibrating diaphragm is equipped with vibrating diaphragm window, top dome be connected to vibrating diaphragm and Cover vibrating diaphragm window.
Preferably, magnetic structure includes magnetic yoke, the main magnet steel for being fixed on magnetic yoke and is respectively separated and is set to main magnet steel phase The secondary magnet steel of magnetic gap is formed to two sides and with main magnet steel.
The utility model has the beneficial effects that:
In the microphone device operation during sounding, voice coil is in variable-current and the collective effect of magnetic structure Under, voice coil drives upper diaphragm oscillations, to make the air vibration and sounding near vibrating diaphragm, and in the process of lower diaphragm oscillations In, pressure difference is generated due to lower vibration vibration of membrane between epicoele and cavity of resorption that lower vibrating diaphragm is kept apart, to the performance of microphone device It impacts.Therefore the lower vibrating diaphragm of the utility model is porous damping piece, thus lower vibrating diaphragm itself has connection upper and lower side Duct and epicoele is connected to cavity of resorption, the air-flow between epicoele and cavity of resorption can be flowed back and forth by these ducts, to reduce Pressure difference between epicoele and cavity of resorption, that is, reduce the pressure drag that lower vibrating diaphragm is subject in vibration processes, to be mentioned High tone quality and stereophonic effect, and then the performances such as product Q value or SPL for improving the microphone device.In addition, lower vibrating diaphragm and basin The position that frame, voice coil are fixedly connected is similarly porous structure, so that the glue between lower vibrating diaphragm and frame, between lower vibrating diaphragm and voice coil It closes intensity to increase, also make moderate progress to the reliability of entire microphone device.
[Detailed description of the invention]
Fig. 1 is the decomposition texture schematic diagram of the utility model microphone device;
Fig. 2 is the schematic perspective view after the microphone device of the utility model is completed;
Fig. 3 is the direction A-A schematic cross-sectional view in Fig. 2;
Fig. 4 is the direction B-B schematic cross-sectional view in Fig. 2;
Fig. 5 is the structural schematic diagram of the lower vibrating diaphragm in the microphone device of the utility model;
Fig. 6 is the structural schematic diagram of the reinforcement supporting member of the microphone device of the utility model.
[specific embodiment]
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
As shown in Figures 1 to 5, the microphone device of the present embodiment includes frame 10 and is individually fixed in the frame 10 Vibrational structure 40 and magnetic structure 30 with magnetic gap 35, the vibrational structure 40 include the upper vibration for being fixed on the frame 10 Film 41 is inserted in the magnetic gap 35 to drive the voice coil 43 of 41 vibration sounding of upper vibrating diaphragm and be fixed on the frame 10 And with the opposite and spaced lower vibrating diaphragm 42 of the upper vibrating diaphragm 41.In the embodiments of the present invention, upper vibrating diaphragm 41, lower vibration Epicoele 101,10 the two of side and frame away from upper vibrating diaphragm 41 of lower vibrating diaphragm 42 are surrounded between 10 three of film 42 and frame jointly Cavity of resorption 102 is surrounded jointly, wherein lower vibrating diaphragm 42 is porous damping piece, passes through the porous damping between epicoele 101 and cavity of resorption 102 The duct of part is connected.
The microphone device is applied on the terminal device, such as: it is answered on mobile phone using the microphone device, on tablet computer With the microphone device etc., in the microphone device operation during sounding, voice coil 43 is in variable-current and magnetic structure Under 30 collective effect, voice coil 43 drives upper vibrating diaphragm 41 to vibrate, to make the air vibration and sounding near vibrating diaphragm 41, simultaneously Drive lower vibrating diaphragm 42 to vibrate, then by between the lower epicoele 101 kept apart of vibrating diaphragm 42 and cavity of resorption 102 due to the vibration of lower vibrating diaphragm 42 and Generate pressure difference, the performance of microphone device is impacted, due to the lower vibrating diaphragm 42 of the present embodiment be made of porous materials it is more Hole damping piece, thus lower vibrating diaphragm 42 itself has the duct of connection upper and lower side and is connected to epicoele with cavity of resorption, in this way, lower vibrating diaphragm 42 during vibration, and the air-flow between epicoele 101 and cavity of resorption 102 can be flowed back and forth by these ducts, to reduce Pressure difference between epicoele 101 and cavity of resorption 102, that is, reduce the pressure drag that lower vibrating diaphragm 42 is subject in vibration processes, from And the performances such as product Q value or SPL for being improved sound quality and stereophonic effect, and then improving the microphone device.Further , the position that lower vibrating diaphragm 42 is fixedly connected with frame 10, voice coil 43 is similarly porous structure so that lower vibrating diaphragm 42 and frame 10 it Between, the bonding strength between lower vibrating diaphragm 42 and voice coil 43 increase, also make moderate progress to the reliability of entire microphone device.
In addition, as shown in figure 5, being swashed to regular array distribution in ring portion 423 on lower vibrating diaphragm 42 by laser boring Light punches the laser hole 420 to be formed, but perforation processing gimmick is not limited to laser, can also be punched using bore mode, It can also adopt and be molded with a mold the laser hole 420 that the mode of lower vibrating diaphragm 42 is reserved.In this way, the lower vibrating diaphragm 42 of the present embodiment passes through certainly The multi-pore channel characteristic and the laser hole 420 formed is punched in ring portion 423 that body has, can easily facilitate air-flow upper Switching flows between chamber 101 and cavity of resorption 102, and have no effect on vibration performance of the lower vibrating diaphragm 42 during vibration sounding.
Further, the aperture in the duct on porous damping piece material used by the lower vibrating diaphragm 42 of the present embodiment is 10um ~2000um, it may be assumed that the duct aperture in used porous damping material can be equal to 10um, can also be equal to 2000um, also It can be the pore size of value in 10um~2000um, can satisfy vibration sounding so in the process to the property of lower vibrating diaphragm 42 It can require.
The quantity of lower vibrating diaphragm 42 is two, and two lower vibrating diaphragms 42 are symmetrically disposed on the opposite sides of voice coil 43.Voice coil 43 For round rectangle structure, the short axle portion 432 including the long axle portion 431 and the long axle portion 431 of connection that are oppositely arranged, two lower vibrating diaphragms 42 are symmetrically disposed on short axle portion 432, i.e. the voice coil 43 of the utility model is the voice coil that rectangular shape is open.
In the prior art, voice coil 43 be gluing it is fixed on upper vibrating diaphragm 41 without again by other means or structure into Row is auxiliarily fixed, and during voice coil 43 vibrates, the stress that the gluing junction between voice coil 43 and upper vibrating diaphragm 41 is subject to makes Stickiness decline is obtained, in order to the working life of the gluing connection extended between voice coil 43 and upper vibrating diaphragm 41, therefore, vibration Structure 40 further includes reinforcement supporting member 44, support is formd in the lower end of voice coil 43 by reinforcement supporting member 44, by 43 bullet of voice coil Property is hung between vibrating diaphragm 41 and lower vibrating diaphragm 42.Specifically, as shown in fig. 6, reinforcement supporting member 44 due to connection head section 441, Middle spring undertaking section 442 and supporting section 443 form, and connection head section 441 and supporting section 443 pass through middle spring undertaking section 442 Connection, connection head section 441 are fixedly connected on frame 10, supporting section 443 be connected to voice coil 43 on one end of upper vibrating diaphragm 41. During voice coil 43 vibrates, supporting section 443 lifts the formation of voice coil 43, and the gluing between voice coil 43 and upper vibrating diaphragm 41 connects It connects and is always stably connected with voice coil 43, for microphone device compared with the existing technology, utilize added reinforcement supporting member 44 The service life of microphone device can further be extended.
In conjunction with referring to shown in Fig. 1, Fig. 3 and Fig. 5, in the embodiments of the present invention, lower vibrating diaphragm 42 includes first fixed Portion 421, the second fixed part 422 and ring portion 423, the first fixed part 421 are fixedly connected on the separate upper vibrating diaphragm 41 of voice coil 43 End, the both ends in ring portion 423 are connect with the first fixed part 421, the second fixed part 422 respectively, the second fixed part 422 and frame 10 are fixedly connected, in this way, the first fixed part 421, ring portion 423 and 422 three of the second fixed part by voice coil 43 end successively Ground extends to frame 10, also, the ring portion 423 of the lower vibrating diaphragm 42 of the microphone device is convex to the direction bending far from upper vibrating diaphragm 41 Out.441 sandwiched of connection head section of reinforcement supporting member 44 is fixed between frame 10 and the second fixed part 422 of lower vibrating diaphragm 42, is added 443 sandwiched of supporting section of strong supporting element 44 is fixed between the end of voice coil 43 and the first fixed part 421, reinforcement supporting member 44 Middle spring undertaking section 442 then in being horizontally located between vibrating diaphragm 41 and lower vibrating diaphragm 42, is protruded since ring portion 423 is bent, Then there is between ring portion 423 and middle spring undertaking section 442 interval.After voice coil 43 drives upper vibrating diaphragm 41 to vibrate, air Vibrated, then lower vibrating diaphragm 42 driven to vibrate, and the ring portion 423 of lower vibrating diaphragm 42 bending protrusion then can it is more quickly corresponding under The vibration of air in chamber, to improve the bass quality of back cavity.
In the present embodiment, microphone device further includes top dome 50, and the middle part of upper vibrating diaphragm 41 is equipped with vibrating diaphragm window 410, top dome 50 are connected to vibrating diaphragm 41 and covering vibrating diaphragm window 410.During propagating sound, top dome 50 is attached to the microphone device On vibrating diaphragm 41, then upper vibrating diaphragm 41 hinders vibration, the folding of upper vibrating diaphragm 41 during vibration due to top dome 50 on upper vibrating diaphragm 41 Loop section vibration is fierce and drives air vibration sounding, is that generated sound quality is more preferable.
As shown in Figure 2 and Figure 5, magnetic structure 30 includes magnetic yoke 34, the main magnet steel 31 being fixed in magnetic yoke 34 and difference It is arranged at intervals at main 31 opposite sides of magnet steel and forms (the two secondary magnet steel 33 at this time of secondary magnet steel 33 of magnetic gap 35 with main magnet steel 31 It is in the formal distribution of quadrangle four edges with two lower vibrating diaphragms 42), secondary magnet steel 33 includes two, and magnetic structure 30 further includes folded sets In main magnet steel 31 pole piece 32 and be embedded at the upper clamp plate 36 of frame 10.Pole piece 32, upper clamp plate 36 can further enhance master The magnetic induction effect of magnet steel 31, secondary magnet steel 33, to enhance the magnetic drive power applied to voice coil 43.
In summary: in the microphone device operation during sounding, voice coil 43 is in variable-current and magnetic structure Under 30 collective effect, voice coil 43 drives upper vibrating diaphragm 41 to vibrate, thus make the air vibration and sounding near vibrating diaphragm 41, and During the vibration of lower vibrating diaphragm 42, by the vibration between the lower epicoele 101 kept apart of vibrating diaphragm 42 and cavity of resorption 102 due to lower vibrating diaphragm 42 It moves and generates pressure difference, the performance of microphone device is impacted.Therefore the lower vibrating diaphragm 42 of the utility model is porous damping piece, because And lower vibrating diaphragm 42 itself has the duct of connection upper and lower side and is connected to epicoele 101 with cavity of resorption 102, epicoele 101 and cavity of resorption 102 Between air-flow can be flowed back and forth by these ducts, to reduce the pressure difference between epicoele 101 and cavity of resorption 102, i.e., The pressure drag that lower vibrating diaphragm 42 is subject in vibration processes is reduced, so that it is improved sound quality and stereophonic effect, Jin Ergai It has been apt to the performances such as product Q value or the SPL of the microphone device.In addition, the position that lower vibrating diaphragm 42 is fixedly connected with frame 10, voice coil 43 It sets and is similarly porous structure, so that the bonding strength between lower vibrating diaphragm 42 and frame 10, between lower vibrating diaphragm 42 and voice coil 43 increases, It also makes moderate progress to the reliability of entire microphone device.
Above-described is only the embodiments of the present invention, it should be noted here that for the ordinary skill of this field For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to it is practical Novel protection scope.

Claims (10)

1. a kind of microphone device comprising frame and be individually fixed in the vibrational structure of the frame and the magnetic with magnetic gap Line structure, the vibrational structure include the upper vibrating diaphragm for being fixed on the frame, are inserted in the magnetic gap to drive the upper vibration The voice coil of film vibration sounding and it is fixed on the frame and lower vibrating diaphragm opposite and spaced with the upper vibrating diaphragm, feature It is, the upper vibrating diaphragm, the lower vibrating diaphragm and the frame surround epicoele jointly, and the lower vibrating diaphragm deviates from the upper vibrating diaphragm Side and the frame surround cavity of resorption jointly, the lower vibrating diaphragm is porous damping piece, and the epicoele and the cavity of resorption pass through institute The duct for stating porous damping piece is connected.
2. microphone device according to claim 1, which is characterized in that the lower vibrating diaphragm includes that gluing is fixed on the voice coil The first fixed part, the ring portion extended from first fixed part to the frame and from the ring portion to the frame Extend and glued the second fixed part for being fixed on the frame, the ring portion are convex to the direction bending far from the upper vibrating diaphragm Out.
3. microphone device according to claim 2, which is characterized in that the aperture in the duct on the porous damping piece is 10um~2000um.
4. microphone device according to claim 3, which is characterized in that include multiple through the lower vibration on the lower vibrating diaphragm The laser hole of film.
5. microphone device according to claim 1, which is characterized in that the lower vibrating diaphragm is symmetrically disposed on the phase of the voice coil To two sides.
6. microphone device according to claim 5, which is characterized in that the voice coil include the long axle portion being oppositely arranged and The short axle portion of the long axle portion is connected, the lower vibrating diaphragm includes two and is symmetrically disposed on the short axle portion.
7. microphone device according to claim 2, which is characterized in that the vibrational structure further includes reinforcement supporting member, institute Reinforcement supporting member is stated to include the connection head section for being fixedly connected on the frame, be fixedly connected on the voice coil away from the upper vibrating diaphragm The middle spring undertaking section of the supporting section of one end and the connection connection head section and the supporting section, the reinforcement supporting member and The lower diaphragm position corresponds.
8. microphone device according to claim 7, which is characterized in that the connection head section sandwiched be fixed on the frame with Between second fixed part, the supporting section sandwiched is fixed between voice coil and first fixed part, described middle spring Section is accepted between the upper vibrating diaphragm and the lower vibrating diaphragm.
9. microphone device according to any one of claim 1 to 8, which is characterized in that the microphone device further includes ball Top, the middle part of the upper vibrating diaphragm are equipped with vibrating diaphragm window, and the top dome is connected to the upper vibrating diaphragm and the covering vibrating diaphragm window.
10. microphone device according to claim 1, which is characterized in that the magnetic structure include magnetic yoke, be fixed on it is described It the main magnet steel of magnetic yoke and is respectively separated and is set to the main magnet steel opposite sides and forms the magnetic gap with the main magnet steel Secondary magnet steel.
CN201822278809.7U 2018-12-30 2018-12-30 Microphone device Expired - Fee Related CN209375908U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822278809.7U CN209375908U (en) 2018-12-30 2018-12-30 Microphone device

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Application Number Priority Date Filing Date Title
CN201822278809.7U CN209375908U (en) 2018-12-30 2018-12-30 Microphone device

Publications (1)

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CN209375908U true CN209375908U (en) 2019-09-10

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CN201822278809.7U Expired - Fee Related CN209375908U (en) 2018-12-30 2018-12-30 Microphone device

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021128329A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound generation device
WO2021128335A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound production device
WO2021128328A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound producing device
WO2021128333A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound production device
WO2021134211A1 (en) * 2019-12-30 2021-07-08 瑞声声学科技(深圳)有限公司 Sound emission device
WO2021258439A1 (en) * 2020-06-24 2021-12-30 瑞声声学科技(深圳)有限公司 Sound generating device
WO2022000519A1 (en) * 2020-06-30 2022-01-06 瑞声声学科技(深圳)有限公司 Loudspeaker

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021128329A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound generation device
WO2021128335A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound production device
WO2021128328A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound producing device
WO2021128333A1 (en) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Sound production device
WO2021134211A1 (en) * 2019-12-30 2021-07-08 瑞声声学科技(深圳)有限公司 Sound emission device
WO2021258439A1 (en) * 2020-06-24 2021-12-30 瑞声声学科技(深圳)有限公司 Sound generating device
WO2022000519A1 (en) * 2020-06-30 2022-01-06 瑞声声学科技(深圳)有限公司 Loudspeaker

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190910

Termination date: 20211230

CF01 Termination of patent right due to non-payment of annual fee