CN209526871U - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN209526871U CN209526871U CN201822276951.8U CN201822276951U CN209526871U CN 209526871 U CN209526871 U CN 209526871U CN 201822276951 U CN201822276951 U CN 201822276951U CN 209526871 U CN209526871 U CN 209526871U
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- voice coil
- frame
- vibrating diaphragm
- microphone device
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- 230000000712 assembly Effects 0.000 claims abstract description 46
- 238000000429 assembly Methods 0.000 claims abstract description 46
- 230000010355 oscillation Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 230000003447 ipsilateral effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of microphone device comprising frame, vibrational system and the magnetic circuit system with magnetic gap；Vibrational system includes the vibrating diaphragm for being fixed on frame, drive the voice coil of diaphragm oscillations sounding, it is fixed on frame and resilient support assemblies opposite and spaced with vibrating diaphragm and support frame, the voice coil includes the top surface for being connected to the vibrating diaphragm, the bottom surface and the connection bottom surface opposite with the top surface and the top surface and the inner sidewall and lateral wall that are oppositely arranged, the support frame includes extending with the spaced frame body of the voice coil and from the frame body to the voice coil direction and being connected to the skeleton interconnecting piece of the lateral wall, one end of the frame body is connect with the vibrating diaphragm, the other end of the frame body is connect with the resilient support assemblies.Compared with the relevant technologies, the microphone device stability of the utility model is good and acoustical behavior is excellent.
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.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 the intelligent slidings such as mobile phone till now
Among dynamic equipment.
The microphone device of the relevant technologies includes frame, the vibrational system for being fixed on the frame and the driving vibration
The magnetic circuit system of system vibration sounding；The vibrational system includes the vibrating diaphragm for being fixed on the frame, the driving diaphragm oscillations
The voice coil of sounding and and interval opposite with the vibrating diaphragm are arranged and the voice coil are supported in the resilient support group of the frame
Part.
However, the vibrating diaphragm and the resilient support assemblies are individually fixed in institute in the microphone device of the relevant technologies
The opposite end of voice coil is stated, although the horizontal swing when resilient support assemblies can effectively prevent the voice coil vibrations, its
The structure directly connecting with voice coil causes the design of the voice coil to be restricted, and the volume of the magnetic circuit system is also limited, from
And it is limited that the acoustics of the microphone device is improved.
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 the microphone devices that a kind of stability is good and acoustical behavior is excellent.
In order to achieve the above objectives, the utility model provides a kind of microphone device comprising frame and is individually fixed in described
The vibrational system of frame and magnetic circuit system with magnetic gap；The vibrational system includes the vibrating diaphragm for being fixed on the frame, consolidates
Due to the vibrating diaphragm and be inserted in the magnetic gap with drive the voice coil of the diaphragm oscillations sounding, be fixed on the frame and with
The vibrating diaphragm is opposite and spaced resilient support assemblies and support frame；The voice coil includes being connected to the vibrating diaphragm
Top surface, the bottom surface opposite with the top surface and the connection bottom surface and the top surface and the inner sidewall being oppositely arranged and outside
Wall, the support frame include with the spaced frame body of the voice coil and from the frame body to the voice coil direction
Extend and be connected to the skeleton interconnecting piece of the lateral wall, one end of the frame body is connect with the vibrating diaphragm, the skeleton
The other end of ontology is connect with the resilient support assemblies.
Preferably, the support frame includes two, and the support frame is respectively arranged in the opposite sides of the voice coil,
The rounded rectangular configuration of voice coil, the voice coil include four straight flanges and four fillets for being separately connected two neighboring straight flange,
Each support frame is oppositely arranged with a straight flange of the voice coil and two fillets at the straight flange both ends.
Preferably, the support frame includes two, and two support frames are located at the outside of the voice coil, often
The one skeleton interconnecting piece is connected to the lateral wall.
Preferably, side of side of the resilient support assemblies far from the vibrating diaphragm than the voice coil far from the vibrating diaphragm
It is farther apart from the vibrating diaphragm.
Preferably, the resilient support assemblies are enclosed jointly sets to form a hollow region, and the voice coil is far from the vibrating diaphragm
One end is located within the scope of the hollow region.
Preferably, the arc-shaped structure of the frame body.
Preferably, the resilient support assemblies include two and are located at the opposite sides of the voice coil, each described
Resilient support assemblies include the auxiliary vibrating diaphragm far from the vibrating diaphragm side that the elastic component is fixed in elastic component and fitting, described
Skeleton interconnecting piece is fixed on the side close to the vibrating diaphragm of the elastic component.
Preferably, the elastic component include the first fixed arm for being fixed on the frame, support be fixed on it is ipsilateral with it
Second fixed arm of the skeleton interconnecting piece and extend from first fixed arm to second fixed arm and with described
The elastic arm of two fixed arms connection；The auxiliary vibrating diaphragm includes the ring of the arc-shaped structure in cross section, by opposite the two of the ring
The first connecting portion and second connecting portion that side each extends over, the first connecting portion are fixed on the separate institute of first fixed arm
The side of support frame is stated, the second connecting portion is fixed on the side far from the support frame of second fixed arm,
And it is oppositely arranged the ring with the elastic arm；The skeleton interconnecting piece is fixed on second fixed arm.
Preferably, the elastic component is flexible circuit board.
Preferably, the magnetic circuit system includes that magnetic yoke, the main magnet steel for being fixed on the magnetic yoke and being respectively separated is set to
The main magnet steel opposite sides and two secondary magnet steel that the magnetic gap is formed with the main magnet steel, two secondary magnet steel are located at
Between two resilient support assemblies.
Preferably, two secondary magnet steel are located at the long axis two sides of the voice coil, and two resilient support assemblies are located at
The short axle two sides of the voice coil.
Preferably, the magnetic circuit system further includes upper clamp plate, and the upper clamp plate includes be fixed on the frame annular in shape
Fixed ring and the pole piece that is extended by the fixed circumferential secondary magnet steel, the pole piece be stacked at two secondary magnet steel.
Compared with the relevant technologies, the support frame of the microphone device of the utility model includes setting with the voice coil interval
The frame body set and the skeleton interconnecting piece for extending and being connected to the lateral wall from the frame body to the voice coil direction,
One end of the frame body is connect with the vibrating diaphragm, and the other end of the frame body is connect with the resilient support assemblies.
The structure makes the voice coil, the resilient support assemblies and the vibrating diaphragm be all connected to the support frame, wherein the bone
Frame interconnecting piece is connected to the lateral wall, so that the height of the voice coil be made to be no longer limited by the vibrations of the resilient support assemblies
Space, the whole height of the microphone device can design more frivolous；Simultaneously because the voice coil does not contact the elasticity
Support component, will not influence the gap between the voice coil and magnetic circuit system, and magnetic circuit system can realize maximized more magnet steel three
Magnetic structure finally effectively increases the acoustical behavior 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 stereochemical structure decomposing schematic representation of the utility model microphone device；
Fig. 3 is the elevational schematic view of the part isometric structure of the utility model microphone device；
Fig. 4 is the cut-away view of the line A-A along Fig. 1；
Fig. 5 is the enlarged drawing of part shown in C in Fig. 4；
Fig. 6 is the part isometric Standard schematic diagram of the vibrational system of the utility model microphone device；
Fig. 7 is the enlarged drawing of part shown in B in Fig. 6；
Fig. 8 is the schematic perspective view of the support frame of the utility model microphone device；
Fig. 9 is the schematic perspective view of the resilient support assemblies of the utility model microphone device；
Figure 10 is the stereochemical structure decomposing schematic representation of the resilient support assemblies of the utility model microphone device.
[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. 1-7, the utility model provides a kind of microphone device 100 comprising frame 1 is individually fixed in institute
State the vibrational system 2 and magnetic circuit system 3 of frame 1.
The frame 1 is used to support the vibrational system 2 and the magnetic circuit system 3, and the magnetic circuit system 3 is for driving institute
State 2 vibration sounding of vibrational system.
The vibrational system 2 includes the voice coil of the vibrating diaphragm 21 for being fixed on the frame 1, driving 21 vibration sounding of vibrating diaphragm
22, it is fixed on the frame 1 and opposite and spaced resilient support assemblies 23 and support frame 24 with the vibrating diaphragm 21.Institute
Stating voice coil 22 includes being connected to the top surface 222 of the vibrating diaphragm 21, the bottom surface 221 opposite with the top surface 222 and described in connecting
Bottom surface 221 and the top surface 222 and the inner sidewall 223 and lateral wall 224 being oppositely arranged.
The magnetic circuit system 3 has magnetic gap 36, and the voice coil 22 is inserted in the magnetic gap 36.
It please join shown in Fig. 8, in present embodiment, the support frame 24 includes two.Specifically, the support frame 24
Including extending with the spaced frame body 241 of the voice coil 22 and from the frame body 241 to 22 direction of voice coil
And it is connected to the skeleton interconnecting piece 242 of the lateral wall 224, one end of the frame body 241 is connect with the vibrating diaphragm 21, institute
The other end for stating frame body 241 is connect with the resilient support assemblies 23.The namely described skeleton interconnecting piece 242 is separately connected
The resilient support assemblies 23 and the side wall 223；Wherein, the arc-shaped structure of the frame body.The voice coil 22 it is opposite
The support frame 24, the rounded rectangular configuration of the voice coil 22 is respectively arranged in two sides, and the voice coil 22 includes four straight flanges
With four fillets for being separately connected two neighboring straight flange, a straight flange of each support frame 24 and the voice coil 22 and
The fillet of the two of the straight flange both ends is oppositely arranged.The structure is connected to the resilient support assemblies 23 and the vibrating diaphragm 21
The support frame 24, the height of the voice coil 22 are no longer limited by the oscillation space of the resilient support assemblies 23, the hair
The whole height of acoustic device 100 can design more frivolous；Simultaneously because the voice coil 22 does not contact the resilient support group
Part 23, will not influence the gap between the voice coil 22 and magnetic circuit, and magnetic circuit system 3 can realize maximized more three magnetic circuit knots of magnet steel
Structure finally effectively increases the acoustical behavior of the microphone device 100.
The support frame 24 includes two and is located at the opposite sides of the voice coil 22, two support frames
24 are located at the outside of the voice coil 22.Present embodiment is only located at the voice coil 22 with two support frames 24
Outside, each skeleton interconnecting piece 242 is illustrated for being connected to the lateral wall 224.
Side of the resilient support assemblies 23 far from the vibrating diaphragm 21 than the voice coil 22 far from the vibrating diaphragm 21 one
Vibrating diaphragm 21 described in lateral extent is farther.The resilient support assemblies 23 and the bottom end of the voice coil 22 be not concordant under the structure.
The resilient support assemblies 23 are enclosed jointly to be set to form a hollow region 10, and the voice coil 22 is far from the vibrating diaphragm 21
One end is located in 10 range of hollow region.So that the design of voice coil 22 is not by it between the resilient support assemblies 23
Space limitation, avoids influence of the resilient support assemblies 23 to magnetic circuit.
In present embodiment, the resilient support assemblies 23 include two and are located at opposite the two of the voice coil 22
The voice coil 22 is supported in the frame by two support frames 24 respectively by side, two resilient support assemblies 23
1.The setting of double spring support component 23 forms symmetrical structure, more stable to the support effect of the voice coil 22, and anti-voice coil 22 is horizontal
To swinging, effect is more excellent.
It please join shown in Fig. 9-10, each resilient support assemblies 23 include that the bullet is fixed in elastic component 231 and fitting
Property part 231 the auxiliary vibrating diaphragm 232 far from 21 side of vibrating diaphragm, the support frame 24 is fixed on the elastic component 231
Close to the side of the vibrating diaphragm 21, i.e., the described skeleton interconnecting piece 242 is fixed on the close vibrating diaphragm 21 of the elastic component 231
Side.The resilient support assemblies 23 are to weaken the vibrational system 2 waving in the operating condition.
Specifically, the elastic component 231 is flexible circuit board, the voice coil 22 is electrically connected with the elastic component 231.One side
Face is used to provide the support to the voice coil 22, on the other hand introduces external electric signal for the voice coil 22, avoids by drawing
Line is the problem of being easy broken string when the voice coil 22 introduces external electric signal, to improve its reliability.
The elastic component 231 include be fixed on the frame 1 the first fixed arm 2311, support be fixed on it is ipsilateral with it
Second fixed arm 2312 of the skeleton interconnecting piece 242 and from first fixed arm 2311 to second fixed arm 2312
The elastic arm 2313 for extending and being connect with second fixed arm 2312；The auxiliary vibrating diaphragm 232 includes the arc-shaped structure in cross section
Ring 2321, the first connecting portion 2322 and second connecting portion 2323 that are each extended over by the opposite sides of the ring 2321,
The first connecting portion 2322 be fixed on first fixed arm 2311 far from the support frame 24 side, described second
Interconnecting piece 2323 is fixed on the side far from the support frame 24 of second fixed arm 2312, and makes the ring 2321
It is oppositely arranged with the elastic arm 2313；The skeleton interconnecting piece 242 is fixed on second fixed arm 2312.Institute under this kind of structure
Stating resilient support assemblies 23 does not influence magnetic gap, optimizes the design of magnetic circuit system, so that the acoustics of the microphone device 100
Performance is more excellent, while the setting of the resilient support assemblies 23 is convenient for the stability of the promotion vibrational system 2.
The magnetic circuit system 3 includes magnetic yoke 31, is fixed on the main magnet steel 32 of the magnetic yoke 31 and is respectively separated and be set to
32 opposite sides of main magnet steel and two secondary magnet steel 33 that the magnetic gap 36 is formed with the main magnet steel 32；Two pairs
Magnet steel 33 is located between two resilient support assemblies 23.
Voice coil 22 described in present embodiment is in rectangular configuration with rounded corners, and two secondary magnet steel 33 are located at the sound
The long axis two sides of circle 22, two resilient support assemblies 23 are located at the short axle two sides of the voice coil 22.At this point, the magnetic circuit system
System 3 forms the magnetic structure of three magnet steel, and the more single magnetic steel magnetic circuit structure of driveability is stronger.
It should be noted that two secondary magnet steel 33 can also respectively with two 23 position phases of resilient support assemblies
Together, the short axle two sides of the voice coil 22 are respectively positioned on, this is also feasible.
In order to further increase the performance of the magnetic circuit system 3, make the magnetic line of force quilt as much as possible of the magnetic circuit system 3
The voice coil 22 is cut, and to form bigger driving force magnetic circuit space, the magnetic circuit system 3 further includes upper clamp plate 34, it is described on
Clamping plate 34 includes being fixed on the fixed ring 341 annular in shape of the frame 1 and being prolonged from the fixed ring 341 to the secondary magnet steel 33
The pole piece 342 stretched, the pole piece 342 are stacked at two secondary magnet steel 33.
Compared with the relevant technologies, the support frame of the microphone device of the utility model includes setting with the voice coil interval
The frame body set and the skeleton interconnecting piece for extending and being connected to the lateral wall from the frame body to the voice coil direction,
One end of the frame body is connect with the vibrating diaphragm, and the other end of the frame body is connect with the resilient support assemblies.
The structure makes the voice coil, the resilient support assemblies and the vibrating diaphragm be all connected to the support frame, wherein the bone
Frame interconnecting piece is connected to the lateral wall, so that the height of the voice coil be made to be no longer limited by the vibrations of the resilient support assemblies
Space, the whole height of the microphone device can design more frivolous；Simultaneously because the voice coil does not contact the elasticity
Support component, will not influence the gap between the voice coil and magnetic circuit system, and magnetic circuit system can realize maximized more magnet steel three
Magnetic structure finally effectively increases the acoustical behavior 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 (12)
1. a kind of microphone device comprising frame and be individually fixed in the vibrational system of the frame and the magnetic circuit with magnetic gap
System；The vibrational system include the vibrating diaphragm for being fixed on the frame, be fixed on the vibrating diaphragm and be inserted in the magnetic gap with
It drives the voice coil of the diaphragm oscillations sounding and is fixed on the frame and elasticity opposite and spaced with the vibrating diaphragm
Support component, the voice coil include the top surface for being connected to the vibrating diaphragm, the bottom surface opposite with the top surface and the connection bottom
Face and the top surface and the inner sidewall and lateral wall being oppositely arranged, which is characterized in that the vibrational system further includes support frame,
The support frame includes prolonging with the spaced frame body of the voice coil and from the frame body to the voice coil direction
The skeleton interconnecting piece of the lateral wall is stretched and is connected to, one end of the frame body is connect with the vibrating diaphragm, the skeleton sheet
The other end of body is connect with the resilient support assemblies.
2. microphone device according to claim 1, which is characterized in that the support frame includes two, the voice coil
Opposite sides is respectively arranged the support frame, the rounded rectangular configuration of voice coil, the voice coil include four straight flanges and
It is separately connected four fillets of two neighboring straight flange, the straight flange and the straight flange of each support frame and the voice coil
The fillet of the two of both ends is oppositely arranged.
3. microphone device according to claim 1, which is characterized in that the support frame includes two, two branch
Support bone frame is located at the outside of the voice coil, and each skeleton interconnecting piece is connected to the lateral wall.
4. microphone device according to claim 1, which is characterized in that the resilient support assemblies far from the vibrating diaphragm one
Side is more farther than vibrating diaphragm described in a lateral extent of the voice coil far from the vibrating diaphragm.
5. microphone device according to claim 1, which is characterized in that the resilient support assemblies are enclosed jointly to be set to be formed in one
Empty region, the voice coil are located within the scope of the hollow region far from one end of the vibrating diaphragm.
6. microphone device according to claim 1, which is characterized in that the arc-shaped structure of frame body.
7. microphone device according to claim 2, which is characterized in that the resilient support assemblies include two and difference position
In the opposite sides of the voice coil, each resilient support assemblies include that the remote of the elastic component is fixed in elastic component and fitting
Auxiliary vibrating diaphragm from the vibrating diaphragm side, the skeleton interconnecting piece are fixed on the side close to the vibrating diaphragm of the elastic component.
8. microphone device according to claim 7, which is characterized in that the elastic component includes be fixed on the frame
One fixed arm, support be fixed on the skeleton interconnecting piece ipsilateral with it the second fixed arm and from first fixed arm to
The elastic arm that second fixed arm extends and connect with second fixed arm；The auxiliary vibrating diaphragm includes the arc-shaped knot in cross section
The ring of structure, the first connecting portion and second connecting portion each extended over by the opposite sides of the ring, the first connecting portion
It is fixed on the side far from the support frame of first fixed arm, it is fixed that the second connecting portion is fixed on described second
The side far from the support frame of arm, and it is oppositely arranged the ring with the elastic arm；The skeleton interconnecting piece is fixed
In second fixed arm.
9. microphone device according to claim 7, which is characterized in that the elastic component is flexible circuit board.
10. microphone device according to claim 8, which is characterized in that the magnetic circuit system include magnetic yoke, be fixed on it is described
It the main magnet steel of magnetic yoke and is respectively separated and is set to the main magnet steel opposite sides and forms the magnetic gap with the main magnet steel
Two secondary magnet steel, two secondary magnet steel are located between two resilient support assemblies.
11. microphone device according to claim 10, which is characterized in that two secondary magnet steel are located at the length of the voice coil
Axis two sides, two resilient support assemblies are located at the short axle two sides of the voice coil.
12. microphone device according to claim 10, which is characterized in that the magnetic circuit system further includes upper clamp plate, described
Upper clamp plate includes the pole piece for being fixed on the fixed ring annular in shape of the frame and being extended by the fixed circumferential secondary magnet steel,
The pole piece is stacked at two secondary magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276951.8U CN209526871U (en) | 2018-12-29 | 2018-12-29 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822276951.8U CN209526871U (en) | 2018-12-29 | 2018-12-29 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209526871U true CN209526871U (en) | 2019-10-22 |
Family
ID=68228166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822276951.8U Expired - Fee Related CN209526871U (en) | 2018-12-29 | 2018-12-29 | Microphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209526871U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111314828A (en) * | 2020-02-25 | 2020-06-19 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111405426A (en) * | 2019-12-27 | 2020-07-10 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111405431A (en) * | 2019-12-27 | 2020-07-10 | 瑞声科技(新加坡)有限公司 | Sound production device and loudspeaker box thereof |
| CN111510831A (en) * | 2020-04-16 | 2020-08-07 | 歌尔股份有限公司 | Sound producing device |
| CN111954131A (en) * | 2020-06-30 | 2020-11-17 | 瑞声新能源发展(常州)有限公司科教城分公司 | Flexible circuit board and speaker |
| WO2022006930A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2022006929A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2022062007A1 (en) * | 2020-09-27 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Speaker module and electronic device |
-
2018
- 2018-12-29 CN CN201822276951.8U patent/CN209526871U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405426A (en) * | 2019-12-27 | 2020-07-10 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111405431A (en) * | 2019-12-27 | 2020-07-10 | 瑞声科技(新加坡)有限公司 | Sound production device and loudspeaker box thereof |
| CN111405426B (en) * | 2019-12-27 | 2021-06-15 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111405431B (en) * | 2019-12-27 | 2021-07-09 | 瑞声科技(新加坡)有限公司 | Sound production device and loudspeaker box thereof |
| CN111314828A (en) * | 2020-02-25 | 2020-06-19 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN111510831A (en) * | 2020-04-16 | 2020-08-07 | 歌尔股份有限公司 | Sound producing device |
| CN111510831B (en) * | 2020-04-16 | 2021-05-28 | 歌尔股份有限公司 | Sound producing device |
| CN111954131A (en) * | 2020-06-30 | 2020-11-17 | 瑞声新能源发展(常州)有限公司科教城分公司 | Flexible circuit board and speaker |
| WO2022006930A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2022006929A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2022062007A1 (en) * | 2020-09-27 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Speaker module and electronic device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |