CN207625783U - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN207625783U CN207625783U CN201721037066.3U CN201721037066U CN207625783U CN 207625783 U CN207625783 U CN 207625783U CN 201721037066 U CN201721037066 U CN 201721037066U CN 207625783 U CN207625783 U CN 207625783U
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- China
- Prior art keywords
- lower cover
- microphone device
- barrier assembly
- back cavity
- upper cover
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Abstract
The utility model provides a kind of microphone device, it includes lower cover, the sounding monomer for surrounding the upper cover of receiving space with the lower cover and being contained in the receiving space, the sounding monomer and the upper cover surround ante-chamber, the sounding monomer, the lower cover and the upper cover surround back cavity jointly, it is characterized in that, the microphone device further includes the ventilative barrier assembly that the lower cover is connected to from the upper cover to the lower cover direction and extension, the back cavity is divided into the first back cavity and the second back cavity by the ventilative barrier assembly, the ventilative barrier assembly is porous ceramics baffle.The microphone device of the utility model not only increases sound-absorbing effect, it is therefore prevented that sound-absorbing particle enters in sounding monomer, realizes more preferable isolation air permeability effect；Enhance structural strength；It ensures the effect of sound-absorbing particle, thus improves frequency acoustic performance.
Description
【Technical field】
The utility model is related to electroacoustic transduction field, a kind of particularly microphone device.
【Background technology】
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 loudspeaker enclosure of the relevant technologies is in order to obtain better acoustic efficiency, often in loudspeaker box internal cavity
Fill sound-absorbing particle.Usual way is first sound-absorbing particle to be packaged in independent shell, then the shell is assembled to and is raised one's voice
In the internal cavity of device case.It designs by this method, the internal cavity space of loudspeaker enclosure is difficult to be fully used, and then raises one's voice
The acoustic efficiency improvement of device case is limited, and there is a problem of overall air permeability difference.
At present by the scheme of the rear operatic tunes of porous material filling to loud speaker module, shell-type encapsulation scheme is usually held in the palm, it will
Porous material is packaged in support shell and sound-absorbing part is made, and then the sound-absorbing part is fixed in loud speaker module, so as to improve raising one's voice
The acoustical behavior of device module.However, said program has support shell sheet as plastic material, do not have gas permeability, only screen cloth one
Face is ventilative, and the diaphragm of loudspeaker generates air-flow when shaking, and due to that can not form ventilating return, causes to be encapsulated in interior porous material pair
Gas quick adsorption-desorption is restricted so that the acoustical behavior effect for improving loud speaker module is deteriorated.
Therefore, it is necessary to provide a kind of new microphone device.
【Utility model content】
To solve the above-mentioned problems, the utility model provides a kind of microphone device comprising lower cover is enclosed with the lower cover
Upper cover at receiving space and the sounding monomer that is contained in the receiving space, the sounding monomer and the upper cover surround
Ante-chamber, the sounding monomer, the lower cover and the upper cover surround back cavity jointly, and the microphone device further includes by the upper cover
To the lower cover direction and extend and be connected to the ventilative barrier assembly of the lower cover, the ventilative barrier assembly is by the back cavity point
It is divided into the first back cavity and the second back cavity, the ventilative barrier assembly is porous ceramics baffle.
As an improvement the upper cover includes with the bottom wall of the lower cover face and from the bottom wall edge towards described
The side wall that lower cover extends, the lower cover lid are connected on the one end of the side wall far from the bottom wall, and the side wall corresponds to described porous
Ceramic baffle plate is formed with double wall, and the breathable barrier is clamped in the double wall.
As an improvement second back cavity is filled with sound-absorbing particle.
As an improvement the aperture of the ventilative barrier assembly is less than the grain size of sound-absorbing particle.
As an improvement the double wall includes two and being oppositely arranged, each double wall includes body part and by institute
State the sliding slot close to one end of the lower cover to its another concave end of body part.
As an improvement the width of the sliding slot is equal to the thickness of the ventilative barrier assembly.
As an improvement the ventilative barrier assembly is inserted into and is arranged in the sliding slot.
As an improvement it is equipped with groove in the position corresponding to the ventilative barrier assembly of the upper cover, it is described
Gas barrier assembly is further arranged in the groove.
As an improvement the lower cover includes sealing strip, the sealing strip presses on the ventilative barrier assembly and institute
State double wall.
As an improvement the lower cover further includes to the seal groove being recessed far from the upper cover direction, the sealing strip
It is contained in the seal groove.
The utility model has the beneficial effects that：The ventilative barrier assembly of the utility model utilizes porous ceramics baffle and double wall
Baffle-type structure is formed in back cavity, it being capable of enhancing structure intensity；The aperture of porous ceramics baffle is less than the grain size of sound-absorbing particle,
Sound-absorbing particle is packaged in the second back cavity by porous ceramics baffle, since this is as sound-absorbing material, not only increases sound-absorbing effect,
It prevents sound-absorbing particle to enter in sounding monomer, is achieved in more preferable isolation air permeability effect；The first back cavity and second is effectively ensured
Air-flow between back cavity is unobstructed, it is ensured that thus the effect of sound-absorbing particle improves frequency acoustic performance.
【Description of the drawings】
Fig. 1 is the stereoscopic schematic diagram of the microphone device of the utility model.
Fig. 2 is the stereochemical structure decomposing schematic representation of the microphone device of the utility model.
Fig. 3 is the schematic cross-sectional view of the line A-A cutting along Fig. 1.
【Specific implementation mode】
The utility model is described in further detail below by specific implementation mode combination Fig. 1, so as to more preferably
Ground understands the advantages of the embodiment of the utility model and its various aspects.Below in an example, embodiment party in detail below is provided
The purpose of formula is easy for becoming apparent from thorough explanation to the content of the utility model, rather than limitations of the present invention.
Embodiment 1
Referring to figs. 1 to Fig. 3, microphone device 100 provided by the utility model comprising lower cover 1, upper cover 2, sounding monomer 3,
Double wall 4 and ventilative barrier assembly 5.Lower cover 1 assembles to form receiving space 6 jointly with upper cover 2.
Sounding monomer 3 is contained in receiving space 6, before the vibrating diaphragm (not labeled) of sounding monomer 3 and the upper cover 2 of face surround
Chamber 61 is used for sounding；Sounding monomer 3, lower cover 1 and upper cover 2 surround back cavity 62 jointly, for improving frequency acoustic performance.
Double wall 4 extends from upper cover 2 to 1 direction of lower cover and is connected to lower cover 1.Further, double wall 4 is including two and opposite
Setting, each double wall 4 include body part 41 and from one end of the close lower cover 1 of body part 41 to the cunning of its another concave end
Slot 42.
Ventilative 5 fixed clamp of barrier assembly in double wall 4 and with double wall 4 jointly by back cavity 62 be divided into the first back cavity 621 and
Second back cavity 622, and the first back cavity 621 is connected to the second back cavity 622.Ventilative barrier assembly 5 is preferably porous ceramics baffle.
Further, the aperture of ventilative barrier assembly 5 is less than the grain size of sound-absorbing particle, and the thickness for barrier assembly 5 of breathing freely is equal to sliding slot 42
Width, and the insertion of ventilative barrier assembly 5 is arranged in sliding slot 42.
Specifically, in receiving space 6, the position of the first back cavity 621 is corresponding with the position of sounding monomer 3, after first
It is not filled with sound-absorbing particle in chamber 621, fills the sound-absorbings particles (not shown) such as Dbass powders in the second back cavity 622, is used to form void
Onomatopoeia chamber, to improve frequency acoustic performance, sound-absorbing particle is packaged in the second back cavity 622 by ventilative barrier assembly 5, and conduct
The partition member of back cavity 62.
It is preferably porous ceramics in the material of present embodiment, barrier assembly 5 of breathing freely, but not limited to this, can also wrap
Include porous ceramic film material and/or other materials.Further.Porous ceramic film material has high apparent porosity, when sound wave is incoming
When, by forced oscillation in the stomata of very little, the friction being subject to and obstruction are vibrated, Acoustic Wave Propagation is made to be suppressed, sound is caused to decline
Subtract, to play the role of sound-absorbing.Porous ceramics as sound-absorbing material usually requires smaller aperture (such as 20~150 μ
M), the higher porosity (for example, being more than 60%) and higher mechanical strength.Since ventilative barrier assembly 5 is as porous suction
Sound material simultaneously has sound absorption function, so enhancing sound-absorbing effect.
In addition, for example by adding pore creating material in ceramic batch, certain space is occupied in green body using pore creating material,
Then through oversintering, pore creating material leaves and forms stomata to prepare porous ceramics.The stomata shapes and sizes of porous ceramics can be with
Adjusted by pore creating material, for example, by molding, extruding, isostatic pressed, roll, inject and slurry cast etc. forming hole method come at
Type porous ceramics, the porous ceramics stomata consistency is good, and intensity is good, and can high temperature high voltage resistant, use the porous ceramic film material
Manufactured ventilative barrier assembly 5 is porous ceramics baffle, and the aperture of ventilative barrier assembly 5 is less than the grain size of sound-absorbing particle,
Sound-absorbing particle is packaged in the second back cavity 622 by ventilative barrier assembly 5, and the first back cavity 621 and the second back cavity 622 has been effectively ensured
Between air-flow it is unobstructed, it is ensured that the effect of the sound-absorbings particle such as Dbass powders, thus enhance breathe freely sound-absorbing effect.In addition, ventilative
Barrier assembly 5 forms baffle-type structure with double wall 4 in back cavity 62, so that back cavity 62 is had baffle-type structure, thereby enhances knot
Structure intensity.
In addition, lower cover 1 includes sealing strip 7, which presses on ventilative barrier assembly 5 and double wall 4.Preferably, lower cover
1 further includes to the seal groove (not shown) being recessed far from 2 direction of upper cover, and sealing strip is contained in seal groove.When lower cover 1
After being covered on upper cover 2, sealing strip 7 compresses ventilative barrier assembly 5 and double wall 4 forms sealing, prevents the sound-absorbing in the second back cavity 622
Particle enters first back cavity 621, improves the reliability of microphone device 100.Specifically, in present embodiment, sealing strip 7
For rubber or sponge, it is certainly not limited to this.
Further, upper cover 2 is equipped with groove 21 in the position of corresponding ventilative barrier assembly 5, breathes freely barrier assembly 5 further
It is arranged in groove 21.The structure can guarantee does not leak sound-absorbing particle after ventilative barrier assembly 5 assembles, it is therefore prevented that sound-absorbing particle enters
In sounding monomer 3, frequency acoustic performance is which thereby enhanced.
Compared with prior art, the ventilative barrier assembly of the utility model is made using porous ceramic film material, this it is ventilative every
Baffle-type structure is formed in back cavity from component and double wall, it being capable of enhancing structure intensity；The aperture of porous ceramics baffle, which is less than, inhales
The sound-absorbings particle such as Dbass powders is packaged in the second back cavity by the grain size of sound particle, porous ceramics baffle, since this is as sound-absorbing
Material not only increases sound-absorbing effect, it is therefore prevented that sound-absorbing particle enters in sounding monomer, realizes more preferable isolation air permeability effect；
The air-flow being effectively ensured between the first back cavity and the second back cavity is unobstructed, it is ensured that the effect of the sound-absorbings particle such as Dbass powders improves
Frequency acoustic performance.
Above-described is only the embodiment of the utility model, 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 this practicality
Novel protection domain.
Claims (10)
1. a kind of microphone device comprising lower cover surrounds the upper cover of receiving space and be contained in the receiving with the lower cover
Sounding monomer in space, the sounding monomer and the upper cover surround ante-chamber, the sounding monomer, the lower cover and it is described on
Lid surround back cavity jointly, which is characterized in that the microphone device further include from the upper cover to the lower cover direction and extend support
It is connected to the ventilative barrier assembly of the lower cover, after the back cavity is divided into the first back cavity and second by the ventilative barrier assembly
Chamber, the ventilative barrier assembly are porous ceramics baffle.
2. microphone device according to claim 1, which is characterized in that the upper cover includes the bottom wall with the lower cover face
And the side wall extended from the bottom wall edge towards the lower cover, the lower cover lid are connected on one of the side wall far from the bottom wall
End, the side wall correspond to the porous ceramics baffle and are formed with double wall, and the breathable barrier is clamped in the double wall.
3. microphone device according to claim 1 or 2, which is characterized in that second back cavity is filled with sound-absorbing particle.
4. microphone device according to claim 3, which is characterized in that the aperture of the ventilative barrier assembly is less than sound-absorbing
The grain size of grain.
5. microphone device according to claim 2, which is characterized in that the double wall includes two and is oppositely arranged, each
The double wall include body part and from the body part close to one end of the lower cover to the sliding slot of its another concave end.
6. microphone device according to claim 5, which is characterized in that the width of the sliding slot is equal to the ventilative isolation group
The thickness of part.
7. microphone device according to claim 5, which is characterized in that the ventilative barrier assembly is inserted into and is arranged in described
In sliding slot.
8. microphone device according to claim 1, which is characterized in that correspond to the ventilative isolation group in the upper cover
The position of part is equipped with groove, and the ventilative barrier assembly is further arranged in the groove.
9. microphone device according to claim 2, which is characterized in that the lower cover includes sealing strip, and the sealing strip supports
It is pressed on the ventilative barrier assembly and the double wall.
10. microphone device according to claim 9, which is characterized in that the lower cover further includes to far from the upper cover side
To the seal groove of recess, the sealing strip is contained in the seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721037066.3U CN207625783U (en) | 2017-08-18 | 2017-08-18 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721037066.3U CN207625783U (en) | 2017-08-18 | 2017-08-18 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207625783U true CN207625783U (en) | 2018-07-17 |
Family
ID=62818959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721037066.3U Active CN207625783U (en) | 2017-08-18 | 2017-08-18 | Microphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207625783U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195065A (en) * | 2018-11-16 | 2019-01-11 | 歌尔股份有限公司 | Loudspeaker mould group |
| CN109195084A (en) * | 2018-10-18 | 2019-01-11 | 歌尔股份有限公司 | Acoustical generator mould group |
| CN110392329A (en) * | 2019-06-03 | 2019-10-29 | 瑞声科技(新加坡)有限公司 | Microphone device |
| WO2020062698A1 (en) * | 2018-09-28 | 2020-04-02 | 歌尔股份有限公司 | Loudspeaker module |
| WO2020062697A1 (en) * | 2018-09-28 | 2020-04-02 | 歌尔股份有限公司 | Speaker module, and mobile terminal |
| WO2022006959A1 (en) * | 2020-07-08 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Sound production device |
-
2017
- 2017-08-18 CN CN201721037066.3U patent/CN207625783U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020062698A1 (en) * | 2018-09-28 | 2020-04-02 | 歌尔股份有限公司 | Loudspeaker module |
| WO2020062697A1 (en) * | 2018-09-28 | 2020-04-02 | 歌尔股份有限公司 | Speaker module, and mobile terminal |
| CN109195084A (en) * | 2018-10-18 | 2019-01-11 | 歌尔股份有限公司 | Acoustical generator mould group |
| CN109195084B (en) * | 2018-10-18 | 2024-05-03 | 歌尔股份有限公司 | Acoustic generator module |
| CN109195065A (en) * | 2018-11-16 | 2019-01-11 | 歌尔股份有限公司 | Loudspeaker mould group |
| CN110392329A (en) * | 2019-06-03 | 2019-10-29 | 瑞声科技(新加坡)有限公司 | Microphone device |
| WO2022006959A1 (en) * | 2020-07-08 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Sound production device |
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