CN110166902A - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN110166902A CN110166902A CN201910386692.0A CN201910386692A CN110166902A CN 110166902 A CN110166902 A CN 110166902A CN 201910386692 A CN201910386692 A CN 201910386692A CN 110166902 A CN110166902 A CN 110166902A
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- fixed
- main
- vibrating diaphragm
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Abstract
The present invention provides a kind of microphone devices, it includes frame and the vibrational system and magnetic circuit system for being individually fixed in frame, and vibrational system includes the vibrating diaphragm for being fixed on frame, the voice coil for being fixed on vibrating diaphragm and is fixed on frame and is connected to resilient support assemblies of the voice coil far from vibrating diaphragm one end；Magnetic circuit system includes the magnetic yoke for being fixed on frame, the main magnet steel for being fixed on magnetic yoke, positioned at two of main magnet steel opposite sides secondary magnet steel and is stacked at the clamping plate of secondary magnet steel；Clamping plate includes the main part for being stacked at each secondary magnet steel respectively, is fixed on frame and forms the fixed part of difference in height with main part and connect the interconnecting piece of main part and fixed part, main part, fixed part and interconnecting piece surround cyclic structure jointly, and fixed part is compared with main part closer to vibrating diaphragm.Compared with the relevant technologies, microphone device high reliablity of the invention and acoustical behavior is excellent.
Description
[technical field]
The present invention 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.And it is used in the vibrational system of microphone device and magnetic circuit system is directly related to hair
The sound quality quality of acoustic device.
The vibrational system of the relevant technologies microphone device include be fixed on frame for vibration sounding vibrating diaphragm, be attached at institute
It states the voice coil of vibrating diaphragm, be supported in the voice coil far from described vibrating diaphragm one end for reinforcing the lateral stability elasticity of the voice coil
Support component；The magnetic circuit system includes the magnetic yoke for being fixed on frame, the main magnet steel for being fixed on the magnetic yoke, is respectively arranged at institute
It states main magnet steel opposite sides and forms two secondary magnet steel of magnetic gap with the main magnet steel interval and be stacked at the secondary magnet steel
Clamping plate.
However, in the microphone device of the relevant technologies, gap between the clamping plate and the resilient support assemblies compared with
It is small, the design of the vibrational system is limited, fails sufficiently to play its performance, limits the acoustical behavior of the microphone device
Optimization.
Therefore, it is really necessary to provide a kind of new microphone device solution above-mentioned technical problem.
[summary of the invention]
Excellent and high reliablity the microphone device the purpose of the present invention is to provide a kind of acoustical behavior.
In order to achieve the above objectives, the present invention provides a kind of microphone device comprising frame and is individually fixed in the basin
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, fixation
In the vibrating diaphragm and it is inserted in the voice coil of the magnetic gap and is fixed on the frame and is connected to the voice coil far from described
The resilient support assemblies of vibrating diaphragm one end；The magnetic circuit system includes the magnetic yoke for being fixed on the frame, is fixed on the magnetic yoke
Main magnet steel, be located at the main magnet steel opposite sides and with the main magnet steel interval formed the magnetic gap secondary magnet steel and
It is stacked at the clamping plate of the secondary magnet steel；The clamping plate include the main part for being stacked at each secondary magnet steel respectively, be fixed on it is described
Frame and the fixed part of difference in height is formed with the main part and connect the interconnecting piece of the main part Yu the fixed part, institute
State main part, the fixed part and the interconnecting piece surround cyclic structure jointly, the fixed part main part closer to
The vibrating diaphragm.
Preferably, the interconnecting piece is mutually perpendicular to the fixed part.
Preferably, the main part includes being stacked at the first main body of the secondary magnet steel and separate by first main body
The side of the main magnet steel is recessed the first recessing groove to be formed, and the interconnecting piece is connected to first main body；The magnetic circuit system
System further include it is folded respectively set two auxiliary magnet steel for being fixed on the secondary magnet steel, each auxiliary magnet steel is respectively accommodated in corresponding
First recessing groove.
Preferably, the auxiliary magnet steel is connected to first main body.
Preferably, the auxiliary magnet steel is fixedly connected with first main body.
Preferably, the main part further includes formed that be recessed by first main body close to the side of the fixed part
Two recessing grooves.
Preferably, main magnet steel is stated in rectangle, and two secondary magnet steel are located at the main magnet steel long axis opposite sides；Institute
Stating resilient support assemblies includes two, and the resilient support assemblies are respectively arranged in the main magnet steel short axle opposite sides.
Preferably, the resilient support assemblies include elastic component and are connected to the elastic component far from the vibrating diaphragm side
Auxiliary vibrating diaphragm, one end of the elastic component is fixed on the frame, and the other end is fixed on the voice coil far from the vibrating diaphragm one
End.
Preferably, the elastic component is flexible circuit board, and the voice coil is electrically connected with the elastic component.
Preferably, the direction of vibration of the main magnet steel and two secondary magnet steel along the vibrating diaphragm magnetizes, and each described
The magnetic pole of secondary magnet steel and the magnetic pole of the main magnet steel are oppositely arranged；The magnetizing direction of two auxiliary magnet steel is respectively perpendicular to institute
Direction of vibration is stated, and the magnetic pole of two auxiliary magnet steel is oppositely arranged, each auxiliary magnet steel is close to the one of the main magnet steel
The magnetic pole of side is different close to the auxiliary magnetic pole of side of magnet steel with the main magnet steel.
Compared with the relevant technologies, in microphone device of the invention, the clamping plate of the magnetic circuit system includes being stacked at respectively respectively
The main part of the pair magnet steel is fixed on the frame and is formed described in fixed part and the connection of difference in height with the main part
The interconnecting piece of main part and the fixed part, the main part, the fixed part and the interconnecting piece surround cyclic structure jointly,
The fixed part main part is closer to the vibrating diaphragm.The clamping plate of above structure provides for the resilient support assemblies
Enough oscillation spaces, release the design of the vibrational system, effectively improve the vibration reliability of the vibrational system, from
And enhance the acoustical behavior and reliability of the microphone device.
[Detailed description of the invention]
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the schematic perspective view of microphone device of the present invention；
Fig. 2 is the stereochemical structure exploded view of microphone device of the present invention；
Fig. 3 is the motor structure exploded view of microphone device of the present invention；
Fig. 4 is the part isometric structural assembly diagram of microphone device of the present invention；
Fig. 5 is the cross-sectional view of the line A-A along Fig. 1；
Fig. 6 is the cross-sectional view of the line B-B along Fig. 1；
Fig. 7 is the enlarged diagram of part shown in C in Fig. 6.
[specific embodiment]
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Please join shown in Fig. 1-7 simultaneously, the present invention provides a kind of microphone device 100, including frame 1, is individually fixed in frame 1
Vibrational system 2 and magnetic circuit system 3, the magnetic circuit system 3 there is magnetic gap 10, the magnetic circuit system 3 is for driving the vibration
Dynamic 2 vibration sounding of system.
The vibrational system 2 includes the vibrating diaphragm 21 for being fixed on the frame 1, is fixed on the vibrating diaphragm 21 and is inserted in described
Magnetic gap 10 is to drive the voice coil 22 of 21 vibration sounding of vibrating diaphragm and be fixed on the frame 1 and be connected to the voice coil 22
Resilient support assemblies 23 far from described 21 one end of vibrating diaphragm.
In present embodiment, the resilient support assemblies 23 are arranged with the magnetic circuit system 3 interval comprising elastic component
231 and it is connected to the auxiliary vibrating diaphragm 232 of the elastic component 231.
The frame 1 is fixed in described 231 one end of elastic component, and the other end is fixed on the separate vibrating diaphragm of the voice coil 22
21 one end, the auxiliary vibrating diaphragm 232 are connected to the elastic component 231.For example, the auxiliary vibrating diaphragm 232 fitting be fixed on it is described
The side far from the vibrating diaphragm 21 of elastic component 231.The resilient support assemblies 23 are by the voice coil 22 far from the vibrating diaphragm 21
One end connection support to the frame 1.On the one hand, on the direction of vibration of the vibrating diaphragm 21, the resilient support assemblies 23
Support is provided for the voice coil 22, for reinforcing the vibrating effect of the vibrating diaphragm 21, improves the acoustics of the microphone device 100
Energy；On the other hand, in the horizontal direction (i.e. the direction vertical with the direction of vibration), the resilient support assemblies 23 are for putting down
The vibrational system 2 that weighs is waved, and the stability of the microphone device 100 is improved.It should be noted that the resilient support group
Part 23 only includes one of them of elastic component 231 or the auxiliary vibrating diaphragm 232, this is also feasible.
More preferably, the elastic component 231 is flexible circuit board, and the voice coil 22 is electrically connected with the elastic component 231.One side
Face is used to improve the oscillation intensity and balance of the vibrational system 2, inhibits to wave, and other direction is 22 company of leading to of voice coil
External power supply is connect, the risk that voice coil leads are easily broken off when voice coil lead structure draws power supply is avoided.
The magnetic circuit system 3 include be fixed on the magnetic yoke 31 of the frame 1, the main magnet steel 32 for being fixed on the magnetic yoke 31,
It is located at 32 opposite sides of main magnet steel and is spaced two secondary magnet steel for forming the magnetic gap 10 with the main magnet steel 32
33, be stacked at the secondary magnet steel 33 and with the clamping plate 34 at the resilient support assemblies 23 interval and fold to set respectively and be fixed on two
Two auxiliary magnet steel 35 of the pair magnet steel 33.
The clamping plate 34 include two main parts 341 for being stacked at each secondary magnet steel 33, be fixed on the frame 1 and with
The main part 341 forms the connection of the fixed part 342 and the connection main part 341 and the fixed part 342 of difference in height
Portion 343, the main part 341, the fixed part 342 and the interconnecting piece 343 surround cyclic structure jointly；The fixed part
342 between the vibrating diaphragm 21 and the resilient support assemblies 23 and are spaced apart from each other, and the main body of the fixed part 342
Portion 341 is closer to the vibrating diaphragm 21.
Each main part 341 includes the first master for being stacked at the secondary magnet steel 33 and being connected to the interconnecting piece 343
Body 3411, by first main body 3411 far from the side of the main magnet steel 32 be recessed the first recessing groove 3412 for being formed and
It is recessed close to the side of the interconnecting piece 343 the second recessing groove 3413 formed by first main body 3411.
Each auxiliary magnet steel 35 be respectively accommodated in corresponding first recessing groove 3412 and with first main body
3411 formation magnetic conductive loops improve the magnetic circuit system 3 to effectively increase the magnetic field strength of the magnetic circuit system 3
Magnetic driving power and symmetry, to enhance the acoustical behavior and reliability of the microphone device 100；Second recessing groove
3413 provide avoiding space for the vibration of the resilient support assemblies 23, avoid the elastic component 231 in vibration processes with
First main body 3411 interferes, to ensure that the reliability that the resilient support assemblies 23 are vibrated.
In present embodiment, the auxiliary magnet steel 35 is connected to first main body 3411, more preferably, the auxiliary magnet steel
35 are fixedly connected with first main body 3411.
In above structure, evacuation step of the interconnecting piece 343 as the fixed part 342, so that the fixed part 342
Bit space is allowed to be formed further from the resilient support assemblies 23, this allows bit space for accommodating the resilient support assemblies
23, and enough oscillation spaces are provided for the resilient support assemblies 23, the design of the vibrational system 2 is released, it is described
Between fixed part 342 and the elastic component 231 relatively far apart, in vibration processes, avoid the elastic component 231 with it is described solid
Determine the interference in portion 342 and influence the vibration performance of the vibrational system 2, the vibration for effectively improving the microphone device 100 is reliable
Property it is high, effectively improve the vibration reliability of the vibrational system 2, enhance the reliability of the microphone device 100；It avoids simultaneously
Noise is issued because of interference influences acoustical behavior, guarantees that the acoustical behavior of the microphone device 100 is excellent.
More preferably, the interconnecting piece 343 is mutually perpendicular to the fixed part 342, so that the fixed part 342 is further remote
From the resilient support assemblies 23, to form the bigger bit space that allows.
In present embodiment, the resilient support assemblies 23 include two and are located at opposite the two of the main magnet steel 32
Side, the resilient support assemblies 23 are arranged with the clamping plate 34 interval.Two resilient support assemblies 23 are about the main magnetic
Steel 32 is centrosymmetric structure, which keeps the vibration balancing of the vibrational system 2 more preferable.
That is, two resilient support assemblies 23 and two auxiliary magnet steel 35 are distinguished in present embodiment
Positioned at the different opposite sides of the main magnet steel 32, it is arranged jointly around the main magnet steel 32.
In present embodiment, with the main magnet steel 32 in rectangle expansion explanation, two secondary magnet steel 33 are located at institute
Main 32 long axis opposite sides of magnet steel is stated, the resilient support assemblies 23 are respectively arranged in the main 32 short axle opposite sides of magnet steel,
The elastic component 231 of the elastic supporting member for supporting optical member 23 is opposite with the fixed part 342 and interval is arranged；Two auxiliary magnet steel
35 are located at the 32 long axis opposite sides of main magnet steel.The setting can then use up the structural body of the holding magnetic circuit system 3 of big degree
Product maximizes, to keep magnetic field strength.
It should be noted that the main magnet steel 32 and two secondary magnet steel 33 magnetize along the direction of vibration, and each
The magnetic pole of the magnetic pole and the main magnet steel 32 of the pair magnet steel 33 is oppositely arranged；The magnetizing direction point of two auxiliary magnet steel 35
It (does not magnetize along the horizontal direction) perpendicular to the direction of vibration, and the magnetic pole of two auxiliary magnet steel 35 is reversely set
It sets, the magnetic pole and the main magnet steel 32 of side of each auxiliary magnet steel 35 close to the main magnet steel 32 are close to the auxiliary magnet steel
The magnetic pole of 35 side is different.
For example, on the direction of vibration, the main magnet steel 32 is close to the magnetic pole of the magnetic yoke 31 in present embodiment
The pole S, magnetic pole of the main magnet steel 32 far from the magnetic yoke 31 is the pole N, magnetic pole of each secondary magnet steel 33 close to the magnetic yoke 31
For the pole N, each magnetic pole of the secondary magnet steel 33 far from the magnetic yoke 31 is the pole S；In the horizontal direction, each auxiliary magnet steel
35 magnetic pole close to the side of the main magnet steel 32 is the pole S, each auxiliary side of the magnet steel 35 far from the main magnet steel 32
Magnetic pole is the pole N.
Compared with the relevant technologies, in microphone device of the invention, the clamping plate of the magnetic circuit system includes being stacked at respectively respectively
The main part of the pair magnet steel is fixed on the frame and is formed described in fixed part and the connection of difference in height with the main part
The interconnecting piece of main part and the fixed part, the main part, the fixed part and the interconnecting piece surround cyclic structure jointly,
The fixed part main part is closer to the vibrating diaphragm.The clamping plate of above structure provides for the resilient support assemblies
Enough oscillation spaces, release the design of the vibrational system, effectively improve the vibration reliability of the vibrational system, from
And enhance the acoustical behavior and reliability of the microphone device.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to protection model of the invention
It encloses.
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 include the vibrating diaphragm for being fixed on the frame, are fixed on the vibrating diaphragm and are inserted in the magnetic gap
Voice coil and be fixed on the frame and be connected to resilient support assemblies of the voice coil far from described vibrating diaphragm one end；The magnetic
Road system includes the magnetic yoke for being fixed on the frame, the main magnet steel for being fixed on the magnetic yoke, to be located at the main magnet steel opposite
Two sides and the secondary magnet steel of the magnetic gap is formed with the main magnet steel interval and is stacked at the clamping plate of the secondary magnet steel, feature
Be, the clamping plate include the main part for being stacked at each secondary magnet steel respectively, be fixed on the frame and with the main part
Form the fixed part of difference in height and the interconnecting piece of the connection main part and the fixed part, the main part, the fixation
Portion and the interconnecting piece surround cyclic structure jointly, and the fixed part main part is closer to the vibrating diaphragm.
2. microphone device according to claim 1, which is characterized in that the interconnecting piece is mutually perpendicular to the fixed part.
3. microphone device according to claim 1, which is characterized in that the main part includes being stacked at the secondary magnet steel
First main body and it is recessed the first recessing groove formed by first main body far from the side of the main magnet steel, the interconnecting piece
It is connected to first main body；The magnetic circuit system further include it is folded respectively set two auxiliary magnet steel for being fixed on the secondary magnet steel,
Each auxiliary magnet steel is respectively accommodated in corresponding first recessing groove.
4. microphone device according to claim 3, which is characterized in that the auxiliary magnet steel is connected to first main body.
5. microphone device according to claim 4, which is characterized in that the auxiliary magnet steel and the fixed company of first main body
It connects.
6. microphone device according to claim 5, which is characterized in that the main part further includes being leaned on by first main body
The side of the nearly fixed part is recessed the second recessing groove to be formed.
7. microphone device according to claim 3, which is characterized in that the main magnet steel is in rectangle, two secondary magnet steel
It is located at the main magnet steel long axis opposite sides；The resilient support assemblies include two, and the main magnet steel short axle is with respect to two
The resilient support assemblies are respectively arranged in side.
8. microphone device according to claim 7, which is characterized in that the resilient support assemblies include elastic component and company
It is connected to auxiliary vibrating diaphragm of the elastic component far from the vibrating diaphragm side, the frame is fixed in one end of the elastic component, another
The voice coil is fixed on far from described vibrating diaphragm one end in end.
9. microphone device according to claim 8, which is characterized in that the elastic component is flexible circuit board, the voice coil
It is electrically connected with the elastic component.
10. microphone device according to claim 3, which is characterized in that the main magnet steel and two equal edges of the secondary magnet steel
The direction of vibration of the vibrating diaphragm magnetizes, and the magnetic pole of the magnetic pole and the main magnet steel of each secondary magnet steel is oppositely arranged；Two institutes
The magnetizing direction for stating auxiliary magnet steel is respectively perpendicular to the direction of vibration, and the magnetic pole of two auxiliary magnet steel is oppositely arranged,
The magnetic pole and the main magnet steel of side of each auxiliary magnet steel close to the main magnet steel are close to the side of the auxiliary magnet steel
Magnetic pole is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386692.0A CN110166902B (en) | 2019-05-09 | 2019-05-09 | Sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386692.0A CN110166902B (en) | 2019-05-09 | 2019-05-09 | Sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110166902A true CN110166902A (en) | 2019-08-23 |
| CN110166902B CN110166902B (en) | 2021-06-11 |
Family
ID=67634149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910386692.0A Active CN110166902B (en) | 2019-05-09 | 2019-05-09 | Sound production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110166902B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114210A1 (en) * | 2019-12-13 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2022007020A1 (en) * | 2020-07-10 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| EP4187923A4 (en) * | 2020-08-25 | 2024-01-24 | Huawei Tech Co Ltd | Electroacoustic transducer, loudspeaker module and electronic device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101354442B1 (en) * | 2013-12-18 | 2014-01-27 | 주식회사 블루콤 | Thin type micro speaker using augmented structure of magnetic force |
| CN205017577U (en) * | 2015-10-19 | 2016-02-03 | 歌尔声学股份有限公司 | Micro loudspeaker |
| CN205545913U (en) * | 2016-01-28 | 2016-08-31 | 瑞声光电科技(常州)有限公司 | Micro sound production device |
| CN206620290U (en) * | 2017-02-28 | 2017-11-07 | 歌尔科技有限公司 | Integrated guide magnetic sheet and apply its sound-producing device |
| CN206775733U (en) * | 2017-04-25 | 2017-12-19 | 歌尔科技有限公司 | The acoustical generator of magnetic circuit system and the application magnetic circuit system |
| CN207869350U (en) * | 2018-01-24 | 2018-09-14 | 瑞声科技(新加坡)有限公司 | Mini-sound device |
| US20180367919A1 (en) * | 2017-06-20 | 2018-12-20 | Aac Technologies Pte, Ltd. | Loudspeaker |
| US20190104369A1 (en) * | 2017-09-29 | 2019-04-04 | Em-Tech. Co., Ltd. | Sound Converter |
-
2019
- 2019-05-09 CN CN201910386692.0A patent/CN110166902B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101354442B1 (en) * | 2013-12-18 | 2014-01-27 | 주식회사 블루콤 | Thin type micro speaker using augmented structure of magnetic force |
| CN205017577U (en) * | 2015-10-19 | 2016-02-03 | 歌尔声学股份有限公司 | Micro loudspeaker |
| CN205545913U (en) * | 2016-01-28 | 2016-08-31 | 瑞声光电科技(常州)有限公司 | Micro sound production device |
| CN206620290U (en) * | 2017-02-28 | 2017-11-07 | 歌尔科技有限公司 | Integrated guide magnetic sheet and apply its sound-producing device |
| CN206775733U (en) * | 2017-04-25 | 2017-12-19 | 歌尔科技有限公司 | The acoustical generator of magnetic circuit system and the application magnetic circuit system |
| US20180367919A1 (en) * | 2017-06-20 | 2018-12-20 | Aac Technologies Pte, Ltd. | Loudspeaker |
| US20190104369A1 (en) * | 2017-09-29 | 2019-04-04 | Em-Tech. Co., Ltd. | Sound Converter |
| CN207869350U (en) * | 2018-01-24 | 2018-09-14 | 瑞声科技(新加坡)有限公司 | Mini-sound device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114210A1 (en) * | 2019-12-13 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2022007020A1 (en) * | 2020-07-10 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| EP4187923A4 (en) * | 2020-08-25 | 2024-01-24 | Huawei Tech Co Ltd | Electroacoustic transducer, loudspeaker module and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110166902B (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021000082A1 (en) | Sound generation device | |
| CN208924470U (en) | Microphone device | |
| CN209526871U (en) | Microphone device | |
| CN209390352U (en) | Microphone device | |
| CN209390347U (en) | Microphone device | |
| CN208924469U (en) | Microphone device | |
| CN109889965A (en) | Microphone device | |
| CN109348373B (en) | Sound production device | |
| CN110166902A (en) | Microphone device | |
| CN208908488U (en) | Microphone device | |
| CN208638634U (en) | Loudspeaker | |
| CN109379680A (en) | Microphone device | |
| CN109862477A (en) | Microphone device | |
| CN109362005A (en) | Microphone device | |
| CN109379679A (en) | Microphone device | |
| CN109348371A (en) | Microphone device | |
| CN109547898A (en) | Microphone device | |
| CN110121134A (en) | Microphone device | |
| CN110022517A (en) | Microphone device | |
| CN108810767A (en) | The production method of loud speaker and loud speaker | |
| CN208908487U (en) | Microphone device | |
| CN209659603U (en) | Microphone device | |
| CN209659586U (en) | Microphone device | |
| CN208924471U (en) | Microphone device | |
| CN208924474U (en) | Microphone device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |