CN209448889U - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN209448889U CN209448889U CN201822279147.5U CN201822279147U CN209448889U CN 209448889 U CN209448889 U CN 209448889U CN 201822279147 U CN201822279147 U CN 201822279147U CN 209448889 U CN209448889 U CN 209448889U
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- CN
- China
- Prior art keywords
- vibrating diaphragm
- frame
- microphone device
- fixed
- voice coil
- 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 - Fee Related
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Abstract
The utility model provides a kind of microphone device, it includes frame and the vibrational structure for being individually fixed in frame and the magnetic structure with magnetic gap, vibrational structure includes the upper vibrating diaphragm for being fixed on frame, magnetic gap is inserted in 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, lower vibrating diaphragm includes the first fixed part for being fixed on voice coil, ring portion from the first fixed part to frame direction that extend from and the second fixed part for extending and being fixed on frame from ring portion to frame, ring portion is equipped with multiple through-holes through ring portion.It is excessive to will appear pressure difference between the two spaces of space under the microphone device of the utility model can solve 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 and tool for being individually fixed in frame
There is the magnetic structure of magnetic gap, vibrational structure includes the upper vibrating diaphragm for being fixed on frame, is inserted in magnetic gap to drive upper vibrating diaphragm to shake
It moves the voice coil of sounding and is fixed on frame and opposite with upper vibrating diaphragm and spaced lower vibrating diaphragm, lower vibrating diaphragm includes being fixed on sound
First fixed part of circle, ring portion from the first fixed part to frame direction that extend from and extends and fix from ring portion to frame
In the second fixed part of frame, ring portion is equipped with multiple through-holes through ring portion.
Preferably, lower vibrating diaphragm is symmetrically disposed on the opposite sides of voice coil, and ring portion is convex to the direction bending far from upper vibrating diaphragm
Out.
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 holding away from the supporting section and connection connection head section of upper vibrating diaphragm one end and the middle spring of supporting section for voice coil
Section is connect, 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 being fixed in magnetic yoke and is respectively separated and is set to main magnet steel
Opposite sides and the secondary magnet steel that magnetic gap is formed with main magnet steel.
Preferably, secondary magnet steel includes two, and magnetic structure further includes being stacked at the pole piece of main magnet steel and being embedded at frame
Upper clamp plate.
Preferably, the through-hole on lower vibrating diaphragm is the laser hole of regular array distribution.
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, the air in the space between the down space and lower vibrating diaphragm and upper vibrating diaphragm of lower vibrating diaphragm generates pressure due to lower vibration vibration of membrane
Difference impacts the performance of microphone device.Therefore the utility model is provided with multiple through-holes in the ring portion of lower vibrating diaphragm, under
The air-flow in the space between the down space of vibrating diaphragm and lower vibrating diaphragm and upper vibrating diaphragm can be flowed back and forth by these through-holes, thus
The pressure difference in the space between the down space and lower vibrating diaphragm and upper vibrating diaphragm of lower vibrating diaphragm is reduced, that is, reduces lower vibrating diaphragm and is shaking
The resistance being subject to during dynamic, to be improved sound quality and stereophonic effect, and then improves the product Q value of the microphone device
Or the performances such as SPL.
[Detailed description of the invention]
Fig. 1 is the microphone device schematic perspective view of the utility model；
Fig. 2 is the decomposition texture schematic diagram of the utility model microphone device；
Fig. 3 is the cross-sectional view in the direction A-A in Fig. 1；
Fig. 4 is the cross-sectional view in the direction B-B in Fig. 1；
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 utility model embodiment includes frame 10 and is individually fixed in frame
10 vibrational structure 40 and magnetic structure 30 with magnetic gap 35, vibrational structure 40 include the upper vibrating diaphragm for being fixed on frame 10
41, be inserted in magnetic gap 35 with drive the voice coil 43 of upper 41 vibration sounding of vibrating diaphragm and be fixed on frame 10 and with upper 41 phase of vibrating diaphragm
Pair and spaced lower vibrating diaphragm 42, lower vibrating diaphragm 42 include the first fixed part 421 for being fixed on voice coil 43, from the first fixed part
421 to 10 direction of frame extend ring portions 423 and from ring portion 423 to frame 10 extend and be fixed on the second of frame 10
Fixed part 422, ring portion 423 are equipped with multiple through-holes 420 through ring portion 423.
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
Lower vibrating diaphragm 42 is driven to vibrate, frame 10 has accommodating space 100 in the microphone device, and vibrating diaphragm 42 and magnetic structure 30 are installed instantly
After in the accommodating space 100, lower vibrating diaphragm 42 is in the interval between magnetic structure 30 and frame 10, then the interval is by lower vibration
Film 42, which is isolated, forms epicoele and cavity of resorption (space between the as lower vibrating diaphragm of epicoele and upper vibrating diaphragm, the lower sky of the as lower vibrating diaphragm of cavity of resorption
Between), pressure difference is generated due to the vibration of lower vibrating diaphragm 42 between epicoele and cavity of resorption, by opening in the ring portion 423 of lower vibrating diaphragm 42
If the through-holes 420 of multiple connection epicoeles and cavity of resorption, in this way, lower vibrating diaphragm 42 is during vibration, between epicoele and cavity of resorption
Air-flow can be flowed back and forth by these through-holes 420, to reduce the pressure difference between epicoele and cavity of resorption, that is, reduce lower vibration
The pressure drag that film 42 is subject in vibration processes to be improved sound quality and stereophonic effect, and then improves the sounding
The performances such as the product Q value of device or SPL.
In the embodiments of the present invention, the through-hole 420 on lower vibrating diaphragm 42 is the laser hole of regular array distribution, i.e., sharp
It is punched with laser, but perforation processing gimmick is not limited to laser, is punched for example, by using bore mode, for example, by using mold
Form the mode reserved through hole 420 of lower vibrating diaphragm 42.The making material of lower vibrating diaphragm 42 include silica gel, rubber, PEEK, TPU and other
High molecular material.
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.
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, reinforcement supporting member 44 is by connection head section 441, middle spring undertaking
Section 442 and supporting section 443 form, and connection head section 441 is connect with supporting section 443 by middle spring undertaking section 442, connect 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.It is vibrated in voice coil 43
During, supporting section 443 lifts the formation of voice coil 43, and the gluing between voice coil 43 and upper vibrating diaphragm 41 connects always by voice coil
43 are stably connected with, and for microphone device compared with the existing technology, utilize added reinforcement supporting member 44 that can further prolong
The service life of long microphone device.
In conjunction with referring to shown in Fig. 1, Fig. 3 and Fig. 5, the ring portion 423 of the lower vibrating diaphragm 42 of the microphone device is to far from upper vibrating diaphragm
41 direction is bent protrusion, also, as shown in fig. 6,441 sandwiched of connection head section of reinforcement supporting member 44 is fixed on frame 10 under
Between second fixed part 422 of vibrating diaphragm 42,443 sandwiched of supporting section of reinforcement supporting member 44 is fixed on the end and first of voice coil 43
Between fixed part 421, the middle spring undertaking section 442 of reinforcement supporting member 44 is then in be horizontally located at vibrating diaphragm 41 and lower vibrating diaphragm 42
Between, it is protruded since ring portion 423 is bent, then there is interval between ring portion 423 and middle spring undertaking section 442.In voice coil
After 43 drive upper vibrating diaphragm 41 to vibrate, air is vibrated, and lower vibrating diaphragm 42 is then driven to vibrate, and the ring portion 423 of lower vibrating diaphragm 42
Bending protrusion then can more quickly in corresponding cavity of resorption air vibration, 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 is during vibration since top dome 50 is in the damping action of upper vibrating diaphragm 41, the folding of upper vibrating diaphragm 41
Ring portion concentrates vibration and drives air vibration sounding, so that generated sound quality is more preferable.
As shown in Figure 2 and Figure 4, 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.The use of pole piece 32 can further enhance main magnet steel
31, the magnetic induction effect of 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, produced between epicoele and cavity of resorption that lower vibrating diaphragm 42 is kept apart due to the vibration of lower vibrating diaphragm 42
Raw pressure difference, impacts the performance of microphone device.Therefore the utility model is provided with more in the ring portion 423 of lower vibrating diaphragm 42
The through-hole 420 of a connection epicoele and cavity of resorption, the air-flow between epicoele and cavity of resorption can be flowed back and forth by these through-holes 420, from
And reduce the pressure difference between epicoele and cavity of resorption, that is, the resistance that lower vibrating diaphragm 42 is subject in vibration processes is reduced, thus
To improve sound quality and stereophonic effect, and then the performances such as product Q value or SPL for improving the 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 (9)
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 lower vibrating diaphragm includes the first fixed part for being fixed on the voice coil, from first fixed part to the frame direction
The ring portion of extension and the second fixed part for extending and being fixed on the frame to the frame from the ring portion, the folding
Ring portion is equipped with multiple through-holes through the ring portion.
2. 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, the ring portion is bent protrusion to the direction far from the upper vibrating diaphragm.
3. microphone device according to claim 2, 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.
4. microphone device according to claim 1, which is characterized in that the vibrational structure further includes reinforcement supporting member, institute
State reinforcement supporting member include the connection head section for being fixedly connected on the frame, be fixedly connected on the voice coil away from the upper vibration
The middle spring undertaking section of the supporting section of film one end and the connection connection head section and the supporting section, the reinforcement supporting member
It is corresponded with the lower diaphragm position.
5. microphone device according to claim 4, 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.
6. microphone device according to any one of claim 1 to 5, 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.
7. microphone device according to claim 1, which is characterized in that the magnetic structure include magnetic yoke, be fixed on it is described
It main magnet steel in magnetic yoke and is respectively separated and is set to the main magnet steel opposite sides and is formed between the magnetic with the main magnet steel
The secondary magnet steel of gap.
8. microphone device according to claim 7, which is characterized in that the pair magnet steel includes two, the magnetic structure
It further include the pole piece for being stacked at the main magnet steel and the upper clamp plate for being embedded at the frame.
9. microphone device according to claim 1, which is characterized in that the through-hole on the lower vibrating diaphragm is regular array distribution
Laser hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822279147.5U CN209448889U (en) | 2018-12-30 | 2018-12-30 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822279147.5U CN209448889U (en) | 2018-12-30 | 2018-12-30 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209448889U true CN209448889U (en) | 2019-09-27 |
Family
ID=68015809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822279147.5U Expired - Fee Related CN209448889U (en) | 2018-12-30 | 2018-12-30 | Microphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209448889U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935617A (en) * | 2020-06-30 | 2020-11-13 | 瑞声科技（南京）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 |
| 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 |
-
2018
- 2018-12-30 CN CN201822279147.5U patent/CN209448889U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128328A1 (en) * | 2019-12-27 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Sound producing 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 |
| CN111935617A (en) * | 2020-06-30 | 2020-11-13 | 瑞声科技（南京）有限公司 | Sound production device |
| CN111935617B (en) * | 2020-06-30 | 2021-10-19 | 瑞声科技（南京）有限公司 | Sound production device |
| WO2022000847A1 (en) * | 2020-06-30 | 2022-01-06 | 瑞声声学科技(深圳)有限公司 | Sound production device |
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Legal Events
| 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: 20190927 Termination date: 20211230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |