CN209201338U - Microphone device - Google Patents
Microphone device Download PDFInfo
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- CN209201338U CN209201338U CN201822149021.6U CN201822149021U CN209201338U CN 209201338 U CN209201338 U CN 209201338U CN 201822149021 U CN201822149021 U CN 201822149021U CN 209201338 U CN209201338 U CN 209201338U
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- voice coil
- wall
- microphone device
- top dome
- glue groove
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Abstract
The utility model provides a kind of microphone device comprising frame and is individually fixed in the vibrational system of frame and the magnetic circuit system with magnetic gap；Vibrational system includes vibrating diaphragm, top dome and voice coil, top dome includes top dome ontology, the connection wall extended by top dome ontology, by top dome body recess and the glue groove extended in connection wall and through connection wall and the through-hole that is connected to glue groove, connection wall is connected to the top surface of voice coil, and the top surface of voice coil abuts completely and covers through-hole, the width of through-hole is less than the thickness of voice coil.Compared with the relevant technologies, the high reliablity of the microphone device of the utility model.
Description
[technical field]
The utility model relates to acoustic-electric field more particularly to a kind of microphone devices for applying to portable electronic product.
[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.Microphone device for playing sound is widely applied
Among the Intelligent mobile equipments such as present mobile phone.
The microphone device of the relevant technologies include frame and the vibrational system for being individually fixed in the frame and have magnetic
The magnetic circuit system in gap；The vibrational system includes being fixed on the vibrating diaphragm of the frame and being fixed on the vibrating diaphragm and be inserted in
To drive the voice coil of the diaphragm oscillations sounding, the vibrating diaphragm and the voice coil are formed solid the magnetic gap by way of gluing
Fixed connection.
However, in microphone device described in the relevant technologies, by directly being beaten in the voice coil close to one end of the vibrating diaphragm
Glue, and the voice coil is made to form gluing by the glue and the vibrating diaphragm, but the hem width of the voice coil is generally small
In 0.30mm, and the minimum hem width for the glue that glue beating apparatus sprays is 0.30mm, therefore in gluing, the edge degree of the glue is greater than
The width of the voice coil, so that the glue is easy to overflow situation from the cemented surface of the voice coil, to affect the vibrating diaphragm
With the adhesion effect of the voice coil, the improvement of the acoustical behavior of the microphone device is limited.
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 microphone devices of high reliablity.
In order to achieve the above objectives, the utility model provides a kind of microphone device comprising frame and is individually fixed in institute
State the vibrational system of frame and the magnetic circuit system with magnetic gap；The vibrational system include the vibrating diaphragm for being fixed on the frame,
The vibrating diaphragm is attached at close to the top dome of the magnetic circuit system side and is inserted in the magnetic gap to drive the vibrating diaphragm to shake
The voice coil of dynamic sounding；The top dome includes top dome ontology, is prolonged from the top dome ontology periphery to the close voice coil direction
The connection wall stretched is recessed by the side close to the vibrating diaphragm of the top dome ontology and extends to the glue groove in the connection wall
And through the connection wall and the through-hole that is connected to the glue groove, the connection wall is connected to the top surface of the voice coil, and
The top surface of the voice coil abuts completely and covers the through-hole, and the width of the through-hole is less than the thickness of the voice coil.
Preferably, the glue groove width is greater than the entire widths.
Preferably, the width of the glue groove is less than the thickness of the voice coil.
Preferably, the width of the connection wall is equal with the thickness of the voice coil.
Preferably, the glue groove includes at least two and is in relative spacing, and the voice coil is in rectangular configuration, described in two
Glue groove distinguishes the position setting on two long axis sides of voice coil described in face.
Preferably, the glue groove includes at least two and is in relative spacing, and the voice coil is in rectangular configuration, described in two
Glue groove distinguishes the position setting on two short axle sides of voice coil described in face.
Preferably, the glue groove includes four and is spaced apart from each other, and the voice coil is in rectangular configuration, four glue grooves
The position setting on four sides of voice coil described in face respectively.
Preferably, the vibrational system further includes the resilient support for being fixed on the frame and being oppositely arranged with the vibrating diaphragm
Component；The top dome further include from the top dome ontology close to a side of the voice coil to the voice coil extend to form the first wall with
And the second wall is extended to form by the end bending of first wall；Second wall is connected to the sound by first wall
Circle, and second wall is connect with the resilient support assemblies, and first wall is connected with the side of the voice coil, and described the
One wall and second wall are to hang on the voice coil below the vibrating diaphragm.
Preferably, first wall and second wall respectively include two and are arranged at intervals at opposite the two of the voice coil
Side；Each second wall includes with the first segment at the voice coil interval and from the opposite end of the first segment respectively to described
Two second segments that first wall extends, the first segment are connect with the resilient support assemblies, second wall of the same side
Two second segments are connect with first wall respectively.
Preferably, the top dome is made of any one material in carbon fiber, stainless steel or aluminium alloy.
Compared with the relevant technologies, in the microphone device of the utility model, the top dome includes top dome ontology, by the top dome
The side of connection wall of the ontology periphery to the close voice coil direction extension, the close vibrating diaphragm by the top dome ontology
It is recessed and the glue groove that extends in the connection wall and through the connection wall and the through-hole that is connected to the glue groove, institute
The top surface that connection wall is connected to the voice coil is stated, and the top surface of the voice coil abuts completely and cover the through-hole, the through-hole
Width be less than the voice coil thickness；Glue by the setting of the glue groove, for the glued voice coil and the top dome
Water is poured in the glue groove, effectively reduces the hidden danger of excessive glue, glued reliability is improved, so that the sounding
The high reliablity of device；In addition, the glue for being contained in the glue groove is drained into the voice coil by the through-hole, the vibration is realized
The gluing of film and the voice coil, because the width of the through-hole is less than the thickness of the voice coil, so that the directed flow of the glue
To the voice coil, the excessive glue phenomenon generated because gluing width is more than the voice coil thickness is avoided, so that the voice coil and institute
The adhesion effect for stating vibrating diaphragm is excellent, to improve the reliability of the microphone device.
[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 part isometric structural exploded view of the utility model microphone device；
Fig. 3 is the top dome schematic perspective view of the utility model microphone device；
Fig. 4 is the structural schematic diagram of the top dome solid other direction of the utility model microphone device；
Fig. 5 is the cut-away view of line B-B in Fig. 3；
Fig. 6 is the top dome schematic perspective view of the utility model microphone device；
Fig. 7 is top dome, the schematic perspective view of resilient support assemblies and voice coil of the utility model microphone device；
Fig. 8 is the cut-away view of the line A-A along Fig. 1；
Fig. 9 is the enlarged drawing of part shown in C in Fig. 8.
[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.
Refering to Figure 1, the utility model provides a kind of microphone device 100 comprising frame 1, vibrational system 2 and
Magnetic circuit system 3.
The frame 1 supports the vibrational system 2 and the magnetic circuit system 3 for fixed.
It please refers to shown in Fig. 1-5, the vibrational system 2 includes the vibrating diaphragm 21 for being fixed on the frame 1, the driving vibrating diaphragm
The voice coil 22 of 21 vibration soundings.
The vibrational system 2 includes the vibrating diaphragm 21 for being fixed on the frame 1, is attached at the vibrating diaphragm 21 close to the magnetic circuit
The top dome 4 of 2 side of system and the voice coil 22 to drive 21 vibration sounding of vibrating diaphragm.
The magnetic circuit system 3 has magnetic gap 30, and the voice coil 22 is inserted in the magnetic gap 30.
The top dome 4 includes top dome ontology 41, from 41 periphery of top dome ontology to close 22 direction of voice coil
The connection wall 42 of extension is recessed by the side close to the vibrating diaphragm 21 of the top dome ontology 41 and extends to the connection wall 42
Interior glue groove 430 and through the connection wall 42 and the through-hole 430 that is connected to the glue groove 43；The voice coil 22 includes
Close to the top surface 221 of top dome 4, the bottom surface 222 opposite with top surface 221 connects the inner sidewall 223 of top surface 221 and bottom surface 222 and outer
Side wall 224, the thickness of so-called voice coil 22 refer to the inner sidewall 223 to lateral wall 224 apart from size；The connection wall 42
It is connected to the top surface 221 of the voice coil 22, and the top surface 221 of the voice coil 22 abuts completely and cover the through-hole 430, it is described
The width of through-hole 430 is less than the thickness of the voice coil 22.
In present embodiment, the width of the glue groove 23 is greater than the width of the through-hole 430；Further, the appearance
The width of glue groove 23 is less than the thickness of the voice coil 22；Further, the width of the connection wall 42 and the voice coil 22
Thickness is equal.Herein, it is worth mentioning at this point that, the width of the through-hole 430 and the width of the glue groove 43 are and the voice coil
The corresponding size of 22 thickness.
In above structure, when the top dome 4 is fixed with 22 gluing of voice coil, for the glued voice coil 22 with it is described
The glue of top dome 4 is first poured into from the glue groove 43 and is reliably contained in the glue groove 43, is avoided in perfusion when institute
It states glue to overflow from other directions, effectively reduces the hidden danger of excessive glue, glued reliability is improved, so that the sounding
The high reliablity of device 100；In addition, the glue for being contained in the glue groove 43 is drained into the voice coil 22 by the through-hole 43
On the top surface 221, the gluing of the top dome 4 and the voice coil 22 is realized, because the width of the through-hole 430 is less than the voice coil
22 thickness, so that the directed flow of the glue is avoided to the voice coil 22 because gluing width is more than the voice coil 22
Thickness and the excessive glue phenomenon generated, so that the voice coil 22 and the adhesion effect of the top dome 4 are excellent, to improve the acoustical generator
The reliability of part 100.
The setting quantity of the glue groove 43 and position be it is indefinite, be unfolded to say so that the voice coil 22 is in rectangular configuration as an example
Bright, for example, the glue groove 43 may include at least two and be in relative spacing, two glue grooves 43 are distinguished described in faces
Two long axis of voice coil 22 while or position setting when two short axles so that the glue groove 43 forms symmetrical structure, the symmetrical structure
So that the gluing of the glue groove 43 and the voice coil 22 is relatively reliable, the reliability of the microphone device 100 is preferably improved；
Further, as shown in this embodiment, the glue groove 43 includes four and is spaced apart from each other, and four glue grooves 43 are not just
The appearance glue is further increased so that the glue groove 43 forms coil structure to the position setting on four sides of the voice coil 22
The reliability of 22 gluing of slot 43 and the voice coil, to further improve the reliability of the microphone device 100.
Please refer to shown in Fig. 1-5 and Fig. 7, in present embodiment, the vibrational system 2 further include be fixed on it is described
Frame 1 and the resilient support assemblies 23 being oppositely arranged with the vibrating diaphragm 21；The top dome 4 further include from the top dome ontology 41 to
The first wall 44 and the second wall 45 extended to form is bent by the end of first wall 44 that the voice coil 22 extends to form；Institute
It states the second wall 45 and the voice coil 22 is connected to by first wall 44, second wall 45 connects with the resilient support assemblies 23
It connects, first wall 44 is connected with the side of the voice coil 22, and first wall 44 and second wall 45 will be to will be described
Voice coil 22 hangs on 21 lower section of vibrating diaphragm.
Specifically, first wall 44 and second wall 45 respectively include two and are arranged at intervals at the voice coil 22
Opposite sides；Each second wall 45 includes with the first segment 451 at the voice coil 22 interval and by the phase of the first segment 451
To two second segments 452 that both ends extend to first wall 44 respectively, the first segment 451 and the resilient support assemblies 23
Connection, two second segments 452 of second wall 45 of the same side are connect with first wall 44 respectively.
Further, the top dome ontology 41 and first wall 44 and second wall 45 can with integral structure,
It can be separate structure；For example, in the present embodiment, the top dome ontology 41 and first wall 44 and second wall 45
It is an integral molding structure, so that the molding of the top dome 4 is more reliable；The top dome 4 is in carbon fiber, stainless steel or aluminium alloy
Any one material is made, as the top dome 4 in present embodiment be magnesium alloy made of, certainly, the material of the top dome 4
Matter is without being limited thereto, as long as low-density, high rigidity and easily molded material can be used as the material that the top dome 4 is made.
Please in combination with shown in Fig. 6-7, in present embodiment, the resilient support assemblies 23 surround a hollow region jointly
230, the voice coil 22 is located in 230 range of hollow region far from one end of the vibrating diaphragm 21；Preferably, the resilient support
Component 23 includes two and is located at the opposite sides of the voice coil 22, and two resilient support assemblies 23 surround in described
Empty region 230.
Specifically, each resilient support assemblies 23 are including elastic component 231 and are attached at the auxiliary of the elastic component 231
Help vibrating diaphragm 232；The elastic component 231 and the auxiliary vibrating diaphragm 232 are respectively fixedly connected in second wall 45.The elasticity branch
Support component 23 is used to improve the reliability of the vibration of the vibrational system 2.In the present embodiment, pass through two resilient support groups
The setting of part 23 forms the symmetrical structure of double spring support component, so that it is more stable to the support effect of the voice coil 22, more
The horizontal swing for preventing the voice coil 22 well, the vibration reliability for improving the vibrational system 2 is higher, so that described
The reliability of microphone device 100 is higher.
Voice coil 22 described in above structure is formed with the vibrating diaphragm 21 by first wall 44 and is fixed, and the structure is on the one hand logical
The effective inhibition for crossing the horizontal swing that first wall 44 is realized to the voice coil 22, improves the reliable of the microphone device 100
Property and stability；Meanwhile the fixed lateral surface 224 for being glued at the voice coil 22 of first wall 44, improve the top dome 4 and institute
State the glued reliability of voice coil 22, the structure release structure design of the voice coil 22, so that the position of the voice coil 22
It can float up and down along the direction of vibration of the vibrating diaphragm 21, the height of voice coil is no longer limited by resilient support assemblies, and microphone device is whole
Body height can design more frivolous.
In the present embodiment, it is illustrated by taking the rounded rectangular configuration of the voice coil 22 as an example, each described first
Two fillets adjacent with the voice coil 22 of wall 44 are connected.So that the top dome 4 is more reliably glued at the voice coil 22, more
It restrained effectively the horizontal swing of the voice coil 22, to further increase the reliability that the vibrational system 2 is vibrated.
Please refer to shown in Fig. 2 and Fig. 7-9, the magnetic circuit system 3 includes magnetic yoke 31, is fixed on the magnetic yoke 31
It main magnet steel 32 and is respectively separated and is set to 32 opposite sides of main magnet steel and forms the magnetic gap with the main magnet steel 32
The secondary magnet steel 33 of two first of 30；Each described first secondary magnet steel 33 is located at second wall 45 and the voice coil ipsilateral with it
Between 22, i.e., each described first secondary magnet steel 33 is contained in the resilient support assemblies 23 and voice coil 22 shape ipsilateral with it
At accommodating space in.At this point, the tool of the magnetic circuit system 3 is there are three magnet steel, it can be according to optimization design in practical application
Demand can set three magnetic steel magnetic circuits for the magnetic circuit system 3, the magnetic circuit system 3 further can also be optimized for five
Magnetic steel magnetic circuit.
When the magnetic circuit system 3 is three magnetic steel magnetic circuit, illustrate by taking the rounded rectangular configuration of the voice coil 22 as an example, two
A resilient support assemblies 23 are located at the two sides of the short axle of the voice coil 22, and two the described first secondary magnet steel 33 are located at the sound
The two sides of the short axle of circle 22, and each described first secondary magnet steel 33 is located at the first segment 431 and the voice coil ipsilateral with it
Between 22, i.e., each described first secondary magnet steel 33 is contained in the resilient support assemblies 23 and voice coil 22 shape ipsilateral with it
At accommodating space in.At this point, the three magnetic steel magnetic circuits structure makes the driveability of the magnetic circuit system 3 excellent, so that institute
The acoustical behavior for stating microphone device 100 is good.
When the magnetic circuit system 3 is five magnetic steel magnetic circuit, for example, in the present embodiment, in order to further efficiently use
Space, reinforces the volume of the magnetic circuit system 3, and the magnetic circuit system 3 further includes being respectively separated to be set to the main magnet steel 32 separately
The secondary magnet steel 34 of two second of outer opposite sides；Two second secondary magnet steel 34 be located at two resilient support assemblies 23 it
Between.
Further, illustrate by taking the rounded rectangular configuration of the voice coil as an example, two resilient support assemblies 23
In the two sides of the short axle of the voice coil 22, two the described first secondary magnet steel 33 are located at the two sides of the short axle of the voice coil 22, and every
One described first secondary magnet steel 33 is between the first segment 431 and the voice coil 22 ipsilateral with it, i.e., and each described first
In the accommodating space that secondary magnet steel 33 is contained in the resilient support assemblies 23 ipsilateral with it and the voice coil 22 is formed, two institutes
State the two sides that the second secondary magnet steel 34 is located at the long axis of the voice coil 22.At this point, the driveability of the five magnetic steel magnetic circuits structure is stronger,
So that the vibrating effect of the microphone device 100 is more excellent.
In order to further improve the performance of magnetic circuit system 3, keep the magnetic line of force of the magnetic circuit system 3 as much as possible by institute
The cutting of voice coil 22 is stated, to form bigger driving force, the magnetic circuit system 3 further includes the main pole core for being stacked at the main magnet steel 32
35, it is stacked at two first consequent pole cores 36 of two the described second secondary magnet steel 34 respectively and is embedded at the upper folder of the frame 1
Plate 37, the upper clamp plate 37 include being fixed on the fixed ring 371 annular in shape of frame 1 and from the fixed ring 371 respectively to institute
Two the second consequent pole cores 372 that the second secondary magnet steel 34 extends are stated, two consequent pole cores 372 are stacked at two described second respectively
Secondary magnet steel 372.
Compared with the relevant technologies, in the microphone device of the utility model, the top dome includes top dome ontology, by the top dome
The side of connection wall of the ontology periphery to the close voice coil direction extension, the close vibrating diaphragm by the top dome ontology
It is recessed and the glue groove that extends in the connection wall and through the connection wall and the through-hole that is connected to the glue groove, institute
The top surface that connection wall is connected to the voice coil is stated, and the top surface of the voice coil abuts completely and cover the through-hole, the through-hole
Width be less than the voice coil thickness；Glue by the setting of the glue groove, for the glued voice coil and the top dome
Water is poured in the glue groove, effectively reduces the hidden danger of excessive glue, glued reliability is improved, so that the sounding
The high reliablity of device；In addition, the glue for being contained in the glue groove is drained into the voice coil by the through-hole, the vibration is realized
The gluing of film and the voice coil, because the width of the through-hole is less than the thickness of the voice coil, so that the directed flow of the glue
To the voice coil, the excessive glue phenomenon generated because gluing width is more than the voice coil thickness is avoided, so that the voice coil and institute
The adhesion effect for stating vibrating diaphragm is excellent, to improve the reliability of 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 (10)
1. a kind of microphone device comprising frame and be individually fixed in the vibrational system of the frame and the magnetic with magnetic gap
Road system；The vibrational system includes the vibrating diaphragm for being fixed on the frame, is attached at the vibrating diaphragm close to the magnetic circuit system one
The top dome of side and the magnetic gap is inserted in drive the voice coil of the diaphragm oscillations sounding, which is characterized in that the top dome
Including top dome ontology, the connection wall extended from the top dome ontology periphery to the close voice coil direction, by the top dome
The side close to the vibrating diaphragm of ontology is recessed and extends to the glue groove in the connection wall and run through the connection wall simultaneously
The through-hole being connected to the glue groove, the connection wall is connected to the top surface of the voice coil, and the top surface of the voice coil is supported completely
The through-hole is connect and covers, the width of the through-hole is less than the thickness of the voice coil.
2. microphone device according to claim 1, which is characterized in that the glue groove width is greater than the entire widths.
3. microphone device according to claim 2, which is characterized in that the width of the glue groove is less than the thickness of the voice coil
Degree.
4. microphone device according to claim 3, which is characterized in that the thickness of the width of the connection wall and the voice coil
It is equal.
5. microphone device according to claim 1, which is characterized in that between the glue groove includes at least two and is in opposite
Every the voice coil is in rectangular configuration, the position setting on two long axis sides of voice coil described in two glue groove difference faces.
6. microphone device according to claim 1, which is characterized in that between the glue groove includes at least two and is in opposite
Every the voice coil is in rectangular configuration, the position setting on two short axle sides of voice coil described in two glue groove difference faces.
7. microphone device according to claim 1, which is characterized in that the glue groove includes four and is spaced apart from each other, institute
State that voice coil is in rectangular configuration, the position setting on four sides of voice coil described in four glue grooves difference faces.
8. microphone device according to claim 1, which is characterized in that the vibrational system further includes being fixed on the frame
And the resilient support assemblies being oppositely arranged with the vibrating diaphragm；The top dome further includes by the top dome ontology close to the voice coil
One side extends to form the first wall to the voice coil and extends to form the second wall by the end bending of first wall；Described second
Wall is connected to the voice coil by first wall, and second wall is connect with the resilient support assemblies, first wall
It is connected with the side of the voice coil, first wall and second wall are to hang on the voice coil under the vibrating diaphragm
Side.
9. microphone device according to claim 8, which is characterized in that first wall and second wall respectively include two
Opposite sides that is a and being arranged at intervals at the voice coil；Each second wall include with the first segment at the voice coil interval and by
Two second segments that the opposite end of the first segment extends to first wall respectively, the first segment and the resilient support
Component connection, two second segments of second wall of the same side are connect with first wall respectively.
10. microphone device described in any one according to claim 1~9, which is characterized in that the top dome is carbon fiber, no
Any one material in rust steel or aluminium alloy is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822149021.6U CN209201338U (en) | 2018-12-20 | 2018-12-20 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822149021.6U CN209201338U (en) | 2018-12-20 | 2018-12-20 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209201338U true CN209201338U (en) | 2019-08-02 |
Family
ID=67429820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822149021.6U Active CN209201338U (en) | 2018-12-20 | 2018-12-20 | Microphone device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831723A (en) * | 2018-12-20 | 2019-05-31 | 瑞声科技(新加坡)有限公司 | Microphone device and its assemble method |
| WO2022007164A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Sound-emitting device |
| WO2022110472A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| US20220191618A1 (en) * | 2020-12-16 | 2022-06-16 | Aac Microtech (Changzhou) Co., Ltd. | Speaker device |
| US11696077B2 (en) * | 2020-11-12 | 2023-07-04 | Aac Microtech (Changzhou) Co., Ltd. | Speaker device |
-
2018
- 2018-12-20 CN CN201822149021.6U patent/CN209201338U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831723A (en) * | 2018-12-20 | 2019-05-31 | 瑞声科技(新加坡)有限公司 | Microphone device and its assemble method |
| CN109831723B (en) * | 2018-12-20 | 2020-12-22 | 瑞声科技(新加坡)有限公司 | Sounding device and assembling method thereof |
| WO2022007164A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Sound-emitting device |
| US11696077B2 (en) * | 2020-11-12 | 2023-07-04 | Aac Microtech (Changzhou) Co., Ltd. | Speaker device |
| WO2022110472A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| US20220191618A1 (en) * | 2020-12-16 | 2022-06-16 | Aac Microtech (Changzhou) Co., Ltd. | Speaker device |
| US11700487B2 (en) * | 2020-12-16 | 2023-07-11 | Aac Microtech (Changzhou) Co., Ltd. | Speaker device |
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