CN209201324U - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN209201324U CN209201324U CN201821910617.7U CN201821910617U CN209201324U CN 209201324 U CN209201324 U CN 209201324U CN 201821910617 U CN201821910617 U CN 201821910617U CN 209201324 U CN209201324 U CN 209201324U
- Authority
- CN
- China
- Prior art keywords
- vibrating diaphragm
- frame
- fixed
- microphone device
- main part
- 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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- 238000005452 bending Methods 0.000 claims abstract description 18
- 230000010355 oscillation Effects 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model provides a kind of microphone device comprising frame, vibrational system, magnetic circuit system and the front cover with acoustic aperture out；Vibrational system includes the vibrating diaphragm for being fixed on frame, drive the voice coil of diaphragm oscillations sounding, vibrating diaphragm includes vibration section, extend from the outwardly extending ring portion of the periphery of vibration section and from ring portion to frame direction and be fixed on the fixed part of frame, ring portion is to far from front cover direction concave shape camber structure, front cover includes the main part being oppositely arranged with vibration section interval, extend to the bending part extended close to vibrating diaphragm direction and from bending part to frame direction and be fixed on the fixing combination portion of frame from the periphery of main part, the vibration section is at least completely covered in orthographic projection of the main part on the vibrating diaphragm, fixing combination portion ring portion described in the orthographic projection covering part on the vibrating diaphragm.Compared with the relevant technologies, the microphone device of the utility model can reduce positioning height, the final thickness for reducing complete machine.
Description
[technical field]
The utility model relates to electroacoustic conversion art more particularly to a kind of acoustical generators for applying to portable electronic product
Part.
[background technique]
With the arrival of mobile internet era, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices
Among, mobile phone is undoubtedly most common, most portable mobile terminal device.Currently, the function of mobile phone is extremely various, one of them is just
It is the music function of high-quality, therefore, the microphone device for playing sound is widely applied Intelligent mobile equipment till now
Among.
The microphone device of the relevant technologies includes frame, the vibrational system for being fixed on the frame, the driving vibration
The magnetic circuit system of system vibration sounding and the frame is covered on close to the front cover of described vibrating diaphragm one end；The vibrational system packet
The voice coil of the vibrating diaphragm for being fixed on the frame, the driving diaphragm oscillations is included, the vibrating diaphragm includes vibration section, by the vibration section
The outwardly extending ring portion of periphery and extend from the ring portion to the frame direction and be fixed on consolidating for the frame
Determine portion；The magnetic circuit system includes magnetic bowl and is contained in the magnetic bowl and the magnet steel with the magnetic bowl-type at magnetic gap, described
Voice coil, which plugs, to be suspended in the magnetic gap.
However, having certain clearance space between the ring portion and front cover, in vibrating diaphragm in the microphone device of the relevant technologies
In vibration processes, which is non functional dimension, without the ring portion resigning for vibrating diaphragm, therefore causes space
Waste.
Therefore, it is really necessary to provide a kind of new microphone device solution above-mentioned technical problem.
[utility model content]
The purpose of this utility model is to provide a kind of acoustical generators for being assemblied in mobile terminal and reduce its integral thickness
Part.
In order to achieve the above objectives, the utility model provides a kind of microphone device comprising frame is fixed on the frame
Vibrational system, the magnetic circuit system for driving the vibrational system vibration sounding and the close vibration system for being covered on the frame
The front cover that there is acoustic aperture at unified end；The vibrational system includes the vibrating diaphragm for being fixed on the frame, the driving vibrating diaphragm vibration
The voice coil of dynamic sounding, the vibrating diaphragm includes vibration section, by the outwardly extending ring portion of periphery of the vibration section and by described
Ring portion extends to the frame direction and is fixed on the fixed part of the frame, and the ring portion is to far from the front cover direction
Concave shape camber structure；The front cover includes the main part being oppositely arranged with the vibration section interval, by the main part
Periphery extends and is fixed on to the bending part extended close to the vibrating diaphragm direction and from the bending part to the frame direction
The vibration section, institute is at least completely covered in the fixing combination portion of the frame, orthographic projection of the main part on the vibrating diaphragm
State fixing combination portion ring portion described in the orthographic projection covering part on the vibrating diaphragm.
Preferably, the fixed part is in tabular, and along the vibrating diaphragm between the ring portion and the fixing combination portion
Direction of vibration distance be consistently greater than or be equal between the fixed part and the fixing combination portion along the vibration vibration of membrane
The distance in direction, the spacing between the main part and the vibration section are greater than or equal to the amplitude of the vibrating diaphragm.
Preferably, the fixing combination portion include extension that is opposite with the ring portion and being connect with the bending part with
And from the extension edge towards the frame bending extend abutting part, the fixed part be folded in the abutting part with it is described
Between frame, the minimum spacing between the extension and the ring is greater than or equal to 1/5th of the vibrating diaphragm amplitude.
Preferably, the microphone device further includes the damping screen cloth for being attached at the front cover, and the acoustic aperture out is through described
Main part setting, the damping screen cloth covers completely sets the acoustic aperture out.
Preferably, the acoustic aperture out includes at least two and is spaced apart from each other setting.
Preferably, the opposite sides that acoustic aperture is respectively arranged at the main part is gone out described in two.
Preferably, the vibrating diaphragm further includes the top dome for being sticked and being fixed on the vibration section, the main part and the top dome
Face setting.
Preferably, the top dome is fixed on the side close to the front cover of the vibrating diaphragm, the main part and the ball
Spacing between top is greater than or equal to the amplitude of the vibrating diaphragm.
Preferably, the top dome is bonded and fixed to the vibration section.
Preferably, the minimum spacing between the extension and the ring be greater than or equal to 0.1mm, the main part with
Spacing of the extension along the diaphragm oscillations direction is 0.5mm.
Compared with the relevant technologies, in the microphone device of the utility model, the front cover includes the vibration section with the vibrating diaphragm
It is spaced the main part being oppositely arranged, from the periphery of the main part to the bending part extended close to the vibrating diaphragm direction and by institute
It states bending part and extends and be fixed on the fixing combination portion of the frame to the frame direction, the main part is on the vibrating diaphragm
Orthographic projection be at least completely covered the vibration section, the fixing combination portion is described in the orthographic projection covering part on the vibrating diaphragm
Ring portion.Space between front cover under this kind of structure and reflexed type vibrating diaphragm is greatly reduced in diameter, to make the positioning of microphone device
Height is down to 2mm by 2.5mm, finally reduces the short transverse space in mobile terminal assembling process, reduces product thickness.
[Detailed description of the invention]
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is the schematic perspective view of the utility model microphone device；
Fig. 2 is the stereochemical structure decomposing schematic representation of the utility model microphone device；
Fig. 3 is the cut-away view of the line A-A along Fig. 1.
[specific embodiment]
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
It please join shown in Fig. 1-3, the utility model provides a kind of microphone device 100 comprising frame 1 is fixed on the basin
The vibrational system 2 of frame 1, the magnetic circuit system 3 for being fixed on the frame 1, the front cover 4 for being covered on frame 1 and be attached at it is described before
The damping screen cloth 5 of lid 4, the magnetic circuit system 3 drive 2 vibration sounding of vibrational system.
The vibrational system 2 includes the sound of the vibrating diaphragm 21 for being fixed on the frame 1, driving 21 vibration sounding of vibrating diaphragm
Circle 22.
In present embodiment, the vibrating diaphragm 21 includes vibration section 211, outwardly extending by the periphery of the vibration section 211
Ring portion 212 and extend and be fixed on the fixed part 213 of the frame 1 from the ring portion 212 to 1 direction of frame,
The fixed part 213 is in plate-like structure, and the ring portion 212 is to far from the 4 direction concave shape camber structure of front cover
2121。
The magnetic circuit system 3 include be fixed on the magnetic bowl 31 of the frame 1 and be contained in the magnetic bowl 31 it is interior and with it is described
The setting of the interval of magnetic bowl 31 forms the magnet steel 32 of magnetic gap 10.The voice coil 22 is plugged and is suspended in the magnetic gap 10.
Certainly, the magnetic circuit system 3 further includes folding to set the pole piece 33 for being fixed on the magnet steel 32, and the pole piece 33 is for being
32 magnetic conduction of magnet steel, reduces the outflow of the magnetic line of force, effectively improves the driving force of the magnetic circuit system 3.
In present embodiment, the front cover 4 includes the main part 41 being oppositely arranged with the vibration section 211 interval, by institute
The periphery of main part 41 is stated to the bending part 42 extended close to 21 direction of vibrating diaphragm and from the bending part 42 to the basin
1 direction of frame extends and is fixed on the fixing combination portion 43 of the frame 1, orthographic projection of the main part 41 on the vibrating diaphragm 21
At least it is completely covered the vibration section 211, the fixing combination portion 43 is described in the orthographic projection covering part on the vibrating diaphragm 21
Ring portion 212.
Specifically, between the ring portion 212 and the fixing combination portion 43 along the direction of vibration of the vibrating diaphragm 21 away from
From be consistently greater than or equal between the fixed part 213 and the fixing combination portion 43 along the direction of vibration of the vibrating diaphragm 21 away from
From, in order to avoid the vibrating diaphragm 21 and the front cover 4 interfere, between the main part 41 and the vibration section 211 between
Away from the amplitude for being greater than or equal to the vibrating diaphragm 21；Preferably, the fixing combination portion 43 includes opposite with the ring portion 212
And the extension 431 that is connect with the bending part 42 and extend from 431 edge of extension towards the frame 1 bending
Abutting part 432, the fixed part 213 are folded between the abutting part 432 and the frame 1, the extension 431 with it is described
Minimum spacing between ring 212 is greater than or equal to 1/5th of 21 amplitude of vibrating diaphragm；More preferably, the extension 431
Minimum spacing between the ring 212 is greater than or equal to 0.1mm, and the main part 41 is with the extension 431 along described
The spacing of 21 direction of vibration of vibrating diaphragm is 0.5mm.The space between front cover and vibrating diaphragm under this kind of structure is greatly reduced in diameter, to make
The positioning height of microphone device is down to 2mm by 2.5mm.Short transverse space can be saved in the assembling process of mobile terminal,
It is final to reduce product thickness.
In present embodiment, the front cover 4 is provided with out acoustic aperture 411, the resistance close to described 2 one end of vibrational system
The lid completely of Buddhist nun's screen cloth 5 sets the acoustic aperture 411 out；Specifically, the acoustic aperture 411 out is arranged through the main part 41, the vibration
Film 21, the voice coil 22 and the magnet steel 32 surround sounding inner cavity 20 jointly, and the air in the sounding inner cavity 20 can pass through institute
The gap (a part of the i.e. described magnetic gap 10) stated between voice coil 22 and the magnet steel 32 leaks out, and the acoustic aperture 411 out will
The air that the sounding inner cavity 20 is circulated out is in communication with the outside, and to ensure that it works normally sounding, stablizes its acoustical behavior.
Preferably, the acoustic aperture 411 out includes at least two and is spaced apart from each other setting, and acoustic aperture 411 is gone out described in two and is distinguished
It is set to the opposite sides of the main part 41；The damping screen cloth 5 goes out acoustic aperture 411 described in being covered on two completely.Pass through tune
The hole mesh number for saving the damping screen cloth 5 realizes that the damping of the damping screen cloth 5 is adjusted, for balancing and improving in the sounding
Chamber 20 and extraneous acoustic pressure, the final high-frequency acoustic performance for improving microphone device.
When microphone device is assembled to mobile terminal (such as mobile phone), the shell of mobile terminal opens up through-hole, microphone device dress
After in shell so that the front cover of microphone device and the through-hole face and concordant, the through hole wall of shell is then pressed be set to before
The portion of being fixedly connected of lid forms fixation, because main part and the structure setting in the portion that is fixedly connected of front cover make the two there are drop,
A receiving step is formed, not will increase the integral thickness of mobile terminal when through hole wall pressure is set to the position, and main body
There are the differences in height of 0.5mm along the diaphragm oscillations direction for portion and fixing combination portion, i.e., save in mobile terminal assembling process
The short transverse space of 0.5mm, to reduce the thickness of mobile terminal.
It is noted that in order to enable the vibration performance of the vibrational system 2 more preferably, can be by the vibrating diaphragm 21
Fixed be sticked in the vibration section 211 have top dome 214, the setting of main part 41 described in 214 face of top dome；Further, it is
The guarantee vibrating diaphragm 21 does not collide with the front cover 4, the top dome 214 be fixed on the vibrating diaphragm 21 before described
The side of lid 4, the spacing between the main part 41 and the top dome 214 are greater than or equal to the amplitude of the vibrating diaphragm 21.Pass through
The setting of the top dome 214 increases the rigidity of the vibration section 211, so that the vibration performance of the vibrational system 2 is more excellent,
To further improve the high-frequency acoustic performance of the microphone device 100.
Preferably, the top dome 214, which is sticked, is fixed on the side far from the voice coil 22 of the vibration section 211.It is solid
It is unlimited to determine mode, for example, the top dome 214 is adhesively fixed by glued mode in the vibration section 211.
Compared with the relevant technologies, in the microphone device of the utility model, the front cover includes the vibration section with the vibrating diaphragm
It is spaced the main part being oppositely arranged, from the periphery of the main part to the bending part extended close to the vibrating diaphragm direction and by institute
It states bending part and extends and be fixed on the fixing combination portion of the frame to the frame direction, the main part is on the vibrating diaphragm
Orthographic projection be at least completely covered the vibration section, the fixing combination portion is described in the orthographic projection covering part on the vibrating diaphragm
Ring portion.Space between front cover under this kind of structure and reflexed type vibrating diaphragm is greatly reduced in diameter, to make the positioning of microphone device
Height is down to 2mm by 2.5mm, finally reduces the short transverse space in mobile terminal assembling process, reduces product thickness.
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, the vibrational system for being fixed on the frame, the driving vibrational system vibration hair
The magnetic circuit system of sound and the front cover go out with acoustic aperture close to described vibrational system one end for being covered on the frame；The vibration
Dynamic system includes the voice coil of the vibrating diaphragm for being fixed on the frame, the driving diaphragm oscillations sounding, the vibrating diaphragm include vibration section,
Extend and be fixed on from the outwardly extending ring portion of the periphery of the vibration section and from the ring portion to the frame direction
The fixed part of the frame, the ring portion is to far from the front cover direction concave shape camber structure, which is characterized in that described
Front cover includes the main part being oppositely arranged with the vibration section interval, from the periphery of the main part to close to the vibrating diaphragm direction
The bending part of extension and extend and be fixed on the fixing combination portion of the frame, institute from the bending part to the frame direction
It states orthographic projection of the main part on the vibrating diaphragm and the vibration section is at least completely covered, the fixing combination portion is on the vibrating diaphragm
Orthographic projection covering part described in ring portion.
2. microphone device according to claim 1, which is characterized in that the fixed part is in tabular, and the ring portion
Between the fixing combination portion at a distance from the direction of vibration of the vibrating diaphragm be consistently greater than or be equal to the fixed part with it is described
Along the distance of the direction of vibration of the vibrating diaphragm between fixing combination portion, the spacing between the main part and the vibration section is greater than
Or the amplitude equal to the vibrating diaphragm.
3. microphone device according to claim 2, which is characterized in that the fixing combination portion includes and ring portion phase
To and with the extension that connect of the bending part and the abutting part that extends from the extension edge towards frame bending, institute
It states fixed part to be folded between the abutting part and the frame, the minimum spacing between the extension and the ring is greater than
Or equal to 1/5th of the vibrating diaphragm amplitude.
4. microphone device according to claim 3, which is characterized in that the microphone device further includes being attached at the front cover
Damping screen cloth, it is described go out acoustic aperture run through the main part, the damping screen cloth cover completely sets described in out acoustic aperture.
5. microphone device according to claim 4, which is characterized in that the acoustic aperture out includes at least two and is spaced apart from each other
Setting.
6. microphone device according to claim 5, which is characterized in that go out acoustic aperture described in two and be respectively arranged at the main body
The opposite sides in portion.
7. microphone device according to claim 1, which is characterized in that the vibrating diaphragm further includes being sticked to be fixed on the vibration
The top dome in portion, the main part and the top dome face are arranged.
8. microphone device according to claim 7, which is characterized in that the top dome is fixed on the close described of the vibrating diaphragm
The side of front cover, the spacing between the main part and the top dome are greater than or equal to the amplitude of the vibrating diaphragm.
9. microphone device according to claim 7, which is characterized in that the top dome is bonded and fixed to the vibration section.
10. microphone device according to claim 3, which is characterized in that the minimum between the extension and the ring
It is 0.5mm that spacing, which is greater than or equal to the spacing of 0.1mm, the main part and the extension along the diaphragm oscillations direction,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910617.7U CN209201324U (en) | 2018-11-19 | 2018-11-19 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910617.7U CN209201324U (en) | 2018-11-19 | 2018-11-19 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209201324U true CN209201324U (en) | 2019-08-02 |
Family
ID=67425007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821910617.7U Expired - Fee Related CN209201324U (en) | 2018-11-19 | 2018-11-19 | Microphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209201324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114152A1 (en) * | 2019-12-11 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Loudspeaker vibrating member |
-
2018
- 2018-11-19 CN CN201821910617.7U patent/CN209201324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114152A1 (en) * | 2019-12-11 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Loudspeaker vibrating member |
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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: 20190802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |