CN209375908U - Microphone device - Google Patents
Microphone device Download PDFInfo
- 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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- China
- Prior art keywords
- vibrating diaphragm
- frame
- microphone device
- fixed
- voice coil
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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
[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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278809.7U CN209375908U (en) | 2018-12-30 | 2018-12-30 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278809.7U CN209375908U (en) | 2018-12-30 | 2018-12-30 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209375908U true CN209375908U (en) | 2019-09-10 |
Family
ID=67828864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822278809.7U Expired - Fee Related CN209375908U (en) | 2018-12-30 | 2018-12-30 | Microphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209375908U (en) |
Cited By (7)
| 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 |
-
2018
- 2018-12-30 CN CN201822278809.7U patent/CN209375908U/en not_active Expired - Fee Related
Cited By (7)
| 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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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190910 Termination date: 20211230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |