CN208112933U - Sounding device and electronic equipment - Google Patents
Sounding device and electronic equipment Download PDFInfo
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- CN208112933U CN208112933U CN201820608252.6U CN201820608252U CN208112933U CN 208112933 U CN208112933 U CN 208112933U CN 201820608252 U CN201820608252 U CN 201820608252U CN 208112933 U CN208112933 U CN 208112933U
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- flexible extension
- vibrating diaphragm
- voice coil
- coil framework
- speech coil
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Abstract
The utility model relates to a kind of sounding device and electronic equipments.The device includes vibration component and magnetic circuit component, vibration component includes vibrating diaphragm and the Voice coil assemblies that are connected and fixed with vibrating diaphragm, Voice coil assemblies include speech coil framework and the voice coil ontology being wound around on speech coil framework, flexible extension made of the outside extension of oriented speech coil framework is wholely set on speech coil framework, flexible extension includes the interior interconnecting piece being connected and fixed with voice coil and/or vibrating diaphragm, outer interconnecting piece on the outermost side and the elastic portion between interior interconnecting piece and outer interconnecting piece.The technical issues of utility model solves is that existing suspension system manufacturing procedure is complicated.
Description
Technical field
The utility model relates to electroacoustic switch technology fields, more specifically, the utility model relates to a kind of sounding device with
And electronic equipment.
Background technique
Loudspeaker generally includes vibration component and magnetic circuit component.Vibration component includes voice coil and the vibrating diaphragm that connect with voice coil.
The outer interconnecting piece of vibrating diaphragm is connect with cage connection or with the exterior section of magnetic circuit component, so that vibrating diaphragm is suspended on magnetic circuit component
Side.
In order to provide vibration component the suspention of auxiliary and prevent the polarization of vibration component, be usually arranged centring disk or
Assist vibrating diaphragm.Centring disk is FPCB.Centring disk assists one end of vibrating diaphragm and the connection of voice coil, the other end and shell or
The exterior section of person's magnetic circuit component connects.
However, centring disk or auxiliary vibrating diaphragm need one by one install, increase the assembly of sounding device
Process.
Utility model content
One purpose of the utility model is to provide a kind of new solution of sounding device.
It is according to the present utility model in a first aspect, providing a kind of sounding device.The device includes vibration component and magnetic circuit
Component, the vibration component include vibrating diaphragm and the Voice coil assemblies that are connected and fixed with the vibrating diaphragm, and the Voice coil assemblies include voice coil
Skeleton and the voice coil ontology being wound around on the speech coil framework are wholely set the oriented speech coil framework on the speech coil framework
Outside extend made of flexible extension, the flexible extension includes being connected and fixed with the voice coil and/or the vibrating diaphragm
Interior interconnecting piece, outer interconnecting piece on the outermost side and the elasticity between the interior interconnecting piece and the outer interconnecting piece
Portion.
Optionally, the flexible extension includes the shape that extended outwardly by one end close to the vibrating diaphragm of the speech coil framework
At the first flexible extension；And/or
The second flexible extension extended outward to form by one end far from the vibrating diaphragm of the speech coil framework.
Optionally, the elastic portion of first flexible extension is or phase identical as ring recess direction on the vibrating diaphragm
Anti- ring structure.
Optionally, first flexible extension is fit together with the vibrating diaphragm by gluing.
Optionally, the flexible extension is provided with multiple；The entirety of the speech coil framework is rectangle structure, by described
The four corners of speech coil framework extend outward to form the flexible extension.
Optionally, the flexible extension is integrated the cyclic structure of setting, by the four of the rectangular speech coil framework
Short side and/or long side in side extend outward to form.
Optionally, the flexible extension includes conductive material layer, the voice coil ontology by the conductive material layer with
External circuit conducting.
Optionally, the speech coil framework is polymer material layer structure made of single layer or MULTILAYER COMPOSITE, the elasticity
Extension is the composite construction of the polymer material layer and conductive material layer.
Second aspect according to the present utility model provides a kind of sounding device.The device includes vibration component and magnetic circuit
Component, the vibration component include voice coil ontology and speech coil framework, and the voice coil ontology is wound around on the speech coil framework, described
In the magnetic gap of one end insertion magnetic circuit component of voice coil ontology, the other end or the speech coil framework of the voice coil ontology and institute
Vibrating diaphragm connection is stated, one end far from the magnetic circuit component of the speech coil framework integrally extends outward to form the vibrating diaphragm.
The third aspect according to the present utility model, provides a kind of electronic equipment.The equipment includes that the utility model provides
The sounding device.
One of the utility model has technical effect that the vibration component of sounding device includes vibrating diaphragm, voice coil ontology and sound
Ring framework.Speech coil framework extends outward to form flexible extension.Suspension system of the flexible extension as vibration component, Neng Gouyou
Effect ground reduces the polarization of vibration component.
In addition, flexible extension and speech coil framework form integral structure, this makes the assembling of suspension system very easy, letter
The manufacturing procedure of sounding device is changed；And integral structure makes the bonding strength of flexible extension and speech coil framework higher.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
The attached drawing for constituting part of specification describes the embodiments of the present invention, and uses together with the description
In explanation the principles of the present invention.
Fig. 1 is the exploded view of the vibration component of one embodiment according to the present utility model.
Fig. 2 is the installation diagram of vibration component a part of one embodiment according to the present utility model.
Fig. 3 is a kind of structural schematic diagram of speech coil framework of one embodiment according to the present utility model.
Fig. 4 is the structural schematic diagram of another vibration component of one embodiment according to the present utility model.
Description of symbols：
11：Vibrating diaphragm；12：Voice coil ontology；13：Speech coil framework；14：First flexible extension；15：Ring structure；16：It is conductive
Material layer；17：Outer pad；18：Interior pad；19：Second flexible extension；20：Shell.
Specific embodiment
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should be noted that：Unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.
Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in appropriate situation
Under, the technology and equipment should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
One embodiment according to the present utility model provides a kind of sounding device.For example, sounding device is loudspeaker list
Body, loudspeaker device etc..
As shown in Figure 1, the sounding device includes shell and the vibration component and magnetic circuit component fixed with cage connection.Vibration
Dynamic component includes vibrating diaphragm 11 and the Voice coil assemblies that are connected and fixed with vibrating diaphragm 11.Voice coil assemblies include speech coil framework 13 and are wound around
Voice coil ontology 12 on speech coil framework 13, in this example embodiment, voice coil line is wound around on speech coil framework 13, to form voice coil ontology
12.Speech coil framework 13 can improve the structural strength of vibrational system, prevent voice coil line at random.For example, speech coil framework 13 is cylindrical in shape knot
Structure.Optionally, speech coil framework 13 is cylindrical shape, rectangular drum like, track type tubular etc..Vibrating diaphragm 11 is that plane diaphragm or ring shake
Film.
Vibrating diaphragm 11 is suspended at the top of magnetic circuit component.For example, vibrating diaphragm 11 include central part, edge part and be located at central part and
Ring portion between edge part.Wherein, edge part is bonded on the side wall of shell 20 or on the exterior section of magnetic circuit component, with
Vibrating diaphragm 11 is set vacantly.
In the magnetic gap of one end insertion magnetic circuit component of voice coil ontology 12.The other end or speech coil framework of voice coil ontology 12
13 connect with vibrating diaphragm 11.For example, voice coil ontology 12 or speech coil framework 13 to be bonded in the central part of vibrating diaphragm 11 by glue.
As shown in Figure 1-3, elasticity made of the outside for being wholely set oriented speech coil framework 13 on speech coil framework 13 extends is prolonged
Extending portion, for example, the first flexible extension 14, the second flexible extension 19.As shown in figure 4, flexible extension include with voice coil and/
Or the vibrating diaphragm interior interconnecting piece 14a, the outer interconnecting piece 14c fixed with cage connection that are connected and fixed and it is located at interior interconnecting piece and outer company
Elastic portion between socket part.Flexible extension has the elastic force of setting, can provide resilient support for vibrational system, prevent vibration system
Sounding of uniting polarizes.For example, interior interconnecting piece is connect by glue with voice coil or vibrating diaphragm.Outer interconnecting piece passes through glue and cage connection.
Optionally, speech coil framework 13 is made by high molecular material, for example, PEEK (polyether-ether-ketone), PEN (poly- naphthalene two
Formic acid glycol ester), PET (polyethylene terephthalate), PI (polyimides) etc..Speech coil framework 13 be monolayer material or
Person's multilayer material is combined.The material and structure of flexible extension are identical as the material of speech coil framework 13 and structure.Voice coil bone
Frame 13 and flexible extension are integrally formed by modes such as injection molding, tape castings.
Flexible extension can be in planar structure.Preferably, as shown in figure 4, flexible extension includes being located at outer interconnecting piece
Ring structure 15 between 14c and interior interconnecting piece 14a.Ring structure 15 is elastic portion.The cross section of ring structure 15 is in camber.
Ring structure 15 can further increase the elastic force of flexible extension.
Magnetic circuit component includes mid portion and exterior section.At least one of exterior section and mid portion include permanent magnetism
Body.Magnetic gap is formed between exterior section and mid portion.
In one example, mid portion includes centring magnet and the center washer that is arranged on the centring magnet.Outside
Portion part includes in magnet and the side washer on magnet when being arranged in.Centring magnet and side magnet are fixed on magnetic conductive board.
In other examples, magnetic circuit component can be single magnetic structure or the magnetic structure including three blocks of magnet, magnetic circuit
A variety of designs of structure should all be included within the scope of the utility model.
Sounding device further includes shell 20.Outer interconnecting piece 14c is connect with shell 20.For example, magnetic circuit component is embedded in shell 20
In.Outer interconnecting piece 14c is bonded on the side wall of shell 20 by glue.
It is also possible that as shown in Fig. 2, shell 20 is practical for ring washer.Ring washer is bonded on exterior section.Outside
Interconnecting piece 14c is arranged on ring washer.Ring washer provides oscillation space for vibration component.
In the utility model embodiment, the vibration component of sounding device includes vibrating diaphragm 11, voice coil ontology 12 and voice coil bone
Frame 13.Speech coil framework 13 extends outward to form flexible extension.Flexible extension includes being connected and fixed with voice coil and/or vibrating diaphragm
The outer interconnecting piece 14c and the elasticity between interior interconnecting piece and outer interconnecting piece that interior interconnecting piece 14a and cage connection are fixed
Portion.Suspension system of the flexible extension as vibration component, can be effectively reduced the polarization of vibration component.
In addition, flexible extension and speech coil framework 13 form integral structure, this makes the assembling of suspension system very easy,
Simplify the manufacturing procedure of sounding device；And integral structure makes the bonding strength of flexible extension and speech coil framework 13 more
It is high.
In one example, as shown in figure 3, flexible extension include from one end of the close vibrating diaphragm 11 of speech coil framework 13 to
The first flexible extension 14 extended to form outside.For example, the elastic portion of the first flexible extension 14 is to be recessed with ring on vibrating diaphragm
The identical ring structure 15 in direction and the connection of the upper surface of outer interconnecting piece 14c and ring washer.Preferably, ring structure at this time
The height of 15 recess is lower than the height of vibrating diaphragm ring recess.In one possible implementation, the first flexible extension 14 with
Vibrating diaphragm 11 fits together.For example, being fit together by gluing, so that a flexible extension 14 is completely embedded with vibrating diaphragm 11.
This connection type can effectively improve the structural strength and elastic force of vibrating diaphragm 11.
And/or
As shown in Figs. 1-2, the second elastic extension extended outward to form by one end of the separate vibrating diaphragm 11 of speech coil framework 13
Portion 19.For example, the elastic portion of the second flexible extension 19 is the ring structure 15 for being recessed contrary with ring on vibrating diaphragm, and
The connection of the lower end surface of outer interconnecting piece 14c and ring washer.It is of course also possible to be designed as with ring be recessed direction it is identical, in this skill
In art scheme, either the first flexible extension 14 or the second flexible extension 19, the recess direction of elastic portion not by
The restriction in vibrating diaphragm ring recess direction, both can be identical, may be reversed, does not influence the specific implementation of the technical program.
Those skilled in the art can be set according to actual needs the extraction location and quantity of flexible extension.First bullet
Property extension 14 and the second flexible extension 19 when being arranged simultaneously, the elastic force of suspension system is bigger, and structural strength is higher, can more have
Effect ground reduces polarization.
Optionally, flexible extension is monolithic construction or split type structure.Monolithic construction refers to flexible extension
It is integrated the cyclic structure of setting.Flexible extension extends outwardly around 13 entirety of speech coil framework.For example, by rectangular voice coil
Short side and/or long side in the four edges of skeleton 13 extend outward to form.The ring assembling structure being wholely set makes flexible extension
The elastic force of all directions is more balanced, can more efficiently prevent from the generation of polarization.
As shown in figs. 1 and 3, it is multiple to refer to that flexible extension is provided with for split type structure.For example, multiple flexible extensions enclose
It is uniformly distributed around speech coil framework 13.Above-mentioned flexible extension can provide elastic force, prevent vibration component from polarizing.This field skill
Art personnel can be configured according to actual needs.
For example, the entirety of speech coil framework 13 is in circular ring shape.The identical even angle in multiple flexible extension intervals it is distributed.
It is also possible to the entirety of speech coil framework 13 in track type structure.Flexible extension is four, and is located at race
On two straight flanges and two arc-shaped sides of road shape structure.
It is also possible that the entirety of speech coil framework 13 is rectangle structure.Extended outwardly shape by four angles of speech coil framework 13
At flexible extension.
And/or
Flexible extension is extended outward to form by the four edges of speech coil framework 13.For example, four flexible extensions are right two-by-two
It is distributed in around speech coil framework 13 with claiming.
Above-mentioned set-up mode can be effectively prevented the generation of polarization.
In one example, as shown in figure 3, flexible extension includes conductive material layer 16.Voice coil ontology 12 passes through conduction
Material layer 16 is connected with external circuit.The material of conductive material layer 16 is at least one of metal, graphene, conducting resinl.
Preferably, flexible extension includes polymer material layer structure made of single layer or MULTILAYER COMPOSITE.Elastic extension
Portion is the composite construction of polymer material layer and conductive material layer.For example, conductive material layer 16 is arranged in layer high molecule material
Between layer.Conductive material layer 16 exposes at the position of the close voice coil of flexible extension, to form interior pad 18, and connects outside
Socket part is exposed, to form outer pad 17.The lead of voice coil line is welded on interior pad 18.Outer pad 17 is connect with external circuit.
In this way, flexible extension has the function of transmitting signal.
In this way, the connection of the lead of voice coil line is more easier, and do not have to for lead being laid on vibrating diaphragm 11 to draw magnetic again
Road component, without by lead it is hanging after draw magnetic circuit system again, reduce lead broken string risk, improve sounding device
Reliability.
It is also possible that flexible extension is single layer polymer material layer.Conductive material layer is attached to polymer material layer
Surface.
Certainly, the material of conductive material layer 16 is not limited to above-mentioned several, and those skilled in the art can be according to actual needs
It is configured.Conductive material layer another embodiment according to the present utility model, provides a kind of sounding device.The device includes
Shell and the vibration component and magnetic circuit component fixed with cage connection.The structure of magnetic circuit component is as previously described.
As shown in figure 4, vibration component includes voice coil ontology 12 and speech coil framework 13.Voice coil ontology 12 is wound around speech coil framework
On 13.In the magnetic gap of one end insertion magnetic circuit component of voice coil ontology 12.The other end or speech coil framework 13 of voice coil ontology 12
It is connect with vibrating diaphragm 11.Speech coil framework 13 can improve the structural strength of vibrational system, prevent voice coil line at random.For example, speech coil framework
13 are cylindrical in shape structure.Optionally, speech coil framework 13 is cylindrical shape, rectangular drum like, track type tubular etc..
In this example embodiment, vibrating diaphragm 11 is extended outward to form by one end of the separate magnetic circuit component of speech coil framework 13.Vibrating diaphragm 11
It is suspended at the top of magnetic circuit component.Vibrating diaphragm 11 is fixed with 13 one of speech coil framework with cage connection.
It should be noted that vibrating diaphragm 11 is overall structure, i.e., integrally extended outward to form by one end of speech coil framework 13 whole
The diaphragm of body.For example, vibrating diaphragm 11 is plane diaphragm or ring vibrating diaphragm.
Optionally, speech coil framework 13 is made by high molecular material, for example, PEEK (polyether-ether-ketone), PEN (poly- naphthalene two
Formic acid glycol ester), PET (polyethylene terephthalate), PI (polyimides) etc..Speech coil framework 13 be monolayer material or
Person's multilayer material is combined.The material and structure of vibrating diaphragm 11 are identical as the material of speech coil framework 13 and structure.Speech coil framework 13
It is integrally formed with vibrating diaphragm 11 by modes such as injection molding, tape castings.
In the utility model embodiment, sounding device does not have in addition setting vibrating diaphragm 11.Vibrating diaphragm 11 from speech coil framework 13 to
Outer to extend, vibrating diaphragm 11 and speech coil framework form integral structure, have saved material in this way.
Further, since vibrating diaphragm 11 and speech coil framework 13 form integral structure, eliminates vibrating diaphragm 11 and speech coil framework 13 carries out
The step of assembly, so that the assembling of sounding device becomes easy.
According to another embodiment of the invention, a kind of electronic equipment is provided.For example, electronic equipment is mobile phone, plate
Computer, game machine, laptop, intercom, VR equipment, AR equipment etc..The equipment includes sounding device provided by the invention.
Although being described in detail by some specific embodiments of the example to the utility model, this field
It is to be understood by the skilled artisans that above example merely to be illustrated, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments
It modifies.The scope of the utility model is defined by the following claims.
Claims (10)
1. a kind of sounding device, including vibration component and magnetic circuit component, the vibration component includes vibrating diaphragm and connects with the vibrating diaphragm
Connecing fixed Voice coil assemblies, the Voice coil assemblies include speech coil framework and the voice coil ontology being wound around on the speech coil framework,
It is characterized in that：Flexible extension made of the outside extension of the oriented speech coil framework is wholely set on the speech coil framework,
The flexible extension includes the interior interconnecting piece being connected and fixed with the voice coil and/or the vibrating diaphragm, outer company on the outermost side
Socket part and the elastic portion between the interior interconnecting piece and the outer interconnecting piece.
2. sounding device according to claim 1, which is characterized in that the flexible extension includes by the speech coil framework
The first flexible extension for extending outward to form of one end close to the vibrating diaphragm；And/or
The second flexible extension extended outward to form by one end far from the vibrating diaphragm of the speech coil framework.
3. sounding device according to claim 2, which is characterized in that the elastic portion of first flexible extension for institute
State the ring structure that ring recess direction is identical or opposite on vibrating diaphragm.
4. sounding device according to claim 2, which is characterized in that first flexible extension passes through with the vibrating diaphragm
Gluing fits together.
5. sounding device according to claim 2, which is characterized in that the flexible extension is provided with multiple；The sound
The entirety of ring framework is rectangle structure, extends outward to form the flexible extension by the four corners of the speech coil framework.
6. sounding device according to claim 2, which is characterized in that the flexible extension is integrated the cyclic annular knot of setting
Structure, by the four edges of the rectangular speech coil framework short side and/or long side extend outward to form.
7. sounding device according to claim 1, which is characterized in that the flexible extension includes conductive material layer, institute
Voice coil ontology is stated to be connected by the conductive material layer with external circuit.
8. sounding device according to claim 7, which is characterized in that the speech coil framework be single layer or MULTILAYER COMPOSITE and
At polymer material layer structure, the flexible extension be the polymer material layer and conductive material layer composite construction.
9. a kind of sounding device, which is characterized in that vibration component and magnetic circuit component, the vibration component include voice coil ontology and sound
Ring framework, the voice coil ontology are wound around on the speech coil framework, between the magnetic of one end insertion magnetic circuit component of the voice coil ontology
In gap, the other end or the speech coil framework of the voice coil ontology are connect with the vibrating diaphragm, the separate institute of the speech coil framework
The one end for stating magnetic circuit component integrally extends to form the vibrating diaphragm outward.
10. a kind of electronic equipment, which is characterized in that including the sounding device as described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820608252.6U CN208112933U (en) | 2018-04-25 | 2018-04-25 | Sounding device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820608252.6U CN208112933U (en) | 2018-04-25 | 2018-04-25 | Sounding device and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN208112933U true CN208112933U (en) | 2018-11-16 |
Family
ID=64117187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820608252.6U Active CN208112933U (en) | 2018-04-25 | 2018-04-25 | Sounding device and electronic equipment |
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| CN (1) | CN208112933U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862478A (en) * | 2019-03-27 | 2019-06-07 | 深圳市信维声学科技有限公司 | a miniature speaker |
| CN110545506A (en) * | 2019-11-04 | 2019-12-06 | 共达电声股份有限公司 | Loudspeaker |
| CN110572754A (en) * | 2019-08-26 | 2019-12-13 | 歌尔股份有限公司 | Vibration system of sound production device and forming method thereof |
| CN110996231A (en) * | 2019-10-24 | 2020-04-10 | 厦门东声电子有限公司 | Loudspeaker for enhancing vibration and assembling process |
| CN113079443A (en) * | 2020-01-06 | 2021-07-06 | 歌尔股份有限公司 | Sound production device |
| CN113079445A (en) * | 2020-01-06 | 2021-07-06 | 歌尔股份有限公司 | Elastic component and sound generating device |
| WO2022067986A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| WO2022067977A1 (en) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2022126787A1 (en) * | 2020-12-16 | 2022-06-23 | 瑞声声学科技(深圳)有限公司 | Sound production device |
-
2018
- 2018-04-25 CN CN201820608252.6U patent/CN208112933U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862478A (en) * | 2019-03-27 | 2019-06-07 | 深圳市信维声学科技有限公司 | a miniature speaker |
| CN110572754A (en) * | 2019-08-26 | 2019-12-13 | 歌尔股份有限公司 | Vibration system of sound production device and forming method thereof |
| CN110996231A (en) * | 2019-10-24 | 2020-04-10 | 厦门东声电子有限公司 | Loudspeaker for enhancing vibration and assembling process |
| CN110545506A (en) * | 2019-11-04 | 2019-12-06 | 共达电声股份有限公司 | Loudspeaker |
| CN113079443A (en) * | 2020-01-06 | 2021-07-06 | 歌尔股份有限公司 | Sound production device |
| CN113079445A (en) * | 2020-01-06 | 2021-07-06 | 歌尔股份有限公司 | Elastic component and sound generating device |
| CN113079443B (en) * | 2020-01-06 | 2023-12-22 | 歌尔股份有限公司 | Sounding device |
| WO2022067977A1 (en) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2022067986A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| WO2022126787A1 (en) * | 2020-12-16 | 2022-06-23 | 瑞声声学科技(深圳)有限公司 | Sound production device |
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