CN110891230A - Sound production device - Google Patents
Sound production device Download PDFInfo
- Publication number
- CN110891230A CN110891230A CN201911149544.3A CN201911149544A CN110891230A CN 110891230 A CN110891230 A CN 110891230A CN 201911149544 A CN201911149544 A CN 201911149544A CN 110891230 A CN110891230 A CN 110891230A
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- magnetic
- magnetic bowl
- wall
- bottom wall
- bowl
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- 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
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- 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
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
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- 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 invention provides a sounding device which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is supported on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, the magnetic circuit system is provided with a magnetic gap, the vibration system comprises a voice coil which is inserted into the magnetic gap, and the magnetic circuit system comprises a first magnetic bowl which is fixed on the basin frame, a magnetic steel unit which is fixed on the first magnetic bowl, and a second magnetic bowl which is covered on the magnetic steel unit; the first magnetic bowl comprises a first magnetic bowl bottom wall which is supported and fixed on the basin frame, and the magnetic steel unit is supported on the first magnetic bowl bottom wall; the second magnetic bowl comprises a second magnetic bowl bottom wall and a second magnetic bowl side wall, the second magnetic bowl bottom wall and the first magnetic bowl bottom wall are arranged in an interval mode, the second magnetic bowl side wall is bent and extended towards the direction close to the first magnetic bowl bottom wall from the second magnetic bowl bottom wall, and the magnetic steel unit, the first magnetic bowl and the second magnetic bowl side wall jointly enclose a magnetic gap. Compared with the prior art, the magnetic force of the sounding device is fully utilized, so that the sensitivity of the sounding device is effectively improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a sounding device applied to an electronic sound box product.
[ background of the invention ]
The sound generating device is also called a loudspeaker or a loudspeaker, and is applied to a sound box to convert an audio signal into sound for playing.
The sound production device in the related art comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system with a magnetic gap, wherein the magnetic circuit system drives the vibration system to vibrate and produce sound, and the magnetic circuit system comprises a magnetic bowl and a magnetic steel unit accommodated and fixed in the magnetic bowl.
However, in the sound production device of the related art, the magnetic frame is not arranged above the magnetic steel unit for shielding, so that the magnetic force can be diffused, and the sound production device is not reasonably utilized.
Therefore, there is a need to provide a new sound generation device to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a sound production device capable of fully utilizing magnetic force.
In order to achieve the above object, the present invention provides a sound generating device, which includes a frame, a vibration system supported on the frame, and a magnetic circuit system for driving the vibration system to vibrate and generate sound, wherein the magnetic circuit system has a magnetic gap, the vibration system includes a voice coil inserted into the magnetic gap, the magnetic circuit system includes a first magnetic bowl fixed on the frame, a magnetic steel unit fixed on the first magnetic bowl, and a second magnetic bowl covered on the magnetic steel unit;
the first magnetic bowl comprises a first magnetic bowl bottom wall which is supported and fixed on the basin frame, and the magnetic steel unit is supported on the first magnetic bowl bottom wall;
the second magnetic bowl comprises a second magnetic bowl bottom wall and a second magnetic bowl side wall, the second magnetic bowl bottom wall and the first magnetic bowl bottom wall are arranged in a spaced and opposite mode, the second magnetic bowl side wall is bent and extended towards the direction close to the first magnetic bowl bottom wall from the second magnetic bowl bottom wall, and the magnetic steel unit, the first magnetic bowl and the second magnetic bowl side wall jointly enclose the magnetic gap.
Preferably, the bottom wall of the second magnetic bowl is fixed on one side, far away from the first magnetic bowl, of the magnetic steel unit.
Preferably, the first magnetic bowl comprises a first magnetic bowl side wall which is bent and extended from the bottom wall of the first magnetic bowl to the side wall of the second magnetic bowl, and the magnetic gap is enclosed by the first magnetic bowl side wall and the side wall of the second magnetic bowl together with the magnetic steel unit.
Preferably, the magnet steel unit includes along the vibration direction in proper order to fold and locates first magnet steel, utmost point core and the second magnet steel of first magnetism bowl diapire, second magnetism bowl diapire is fixed in the second magnet steel, the projection of utmost point core along the vertical vibration direction with first magnetism bowl lateral wall and the equal part of second magnetism bowl lateral wall overlaps.
Preferably, the projection of the pole piece in the vertical vibration direction falls completely within the voice coil.
Preferably, the vibration system further comprises a vibrating diaphragm fixed on the basin frame, a framework connecting the vibrating diaphragm and the voice coil, and an auxiliary vibrating diaphragm fixed on the framework;
the vibrating diaphragm comprises a vibrating part, a corrugated ring part bent and extended from the periphery of the vibrating part and a fixing part bent and extended from the corrugated ring part and fixed on the basin stand; the framework is connected with the vibrating part;
one side of the auxiliary vibrating diaphragm is fixed on the basin frame, and the other side of the auxiliary vibrating diaphragm is fixed on the framework.
Preferably, the magnetic circuit system further comprises a yielding groove, and the yielding groove penetrates through the first magnetic bowl and/or the second magnetic bowl and extends along the vibration direction of the vibrating diaphragm;
the framework extends to the magnetic gap through the abdicating groove and suspends the voice coil support in the magnetic gap.
Preferably, the frame comprises a bottom wall, an outer wall bent and extended from the periphery of the bottom wall, and an inner wall bent and extended from the bottom wall, the outer wall is arranged around the inner wall and spaced from the inner wall, the inner wall is provided with through holes penetrating through the inner wall, and the through holes extend along the vibration direction of the diaphragm;
the bottom wall and the inner wall jointly enclose an accommodating space, the magnetic circuit system is arranged in the accommodating space, and the abdicating grooves and the through holes are arranged in a one-to-one opposite mode;
the skeleton ring is located the inner wall outside and interval set up, the skeleton passes through in proper order the opening with the groove of stepping down extends to in the magnetic gap.
Compared with the prior art, in the sound production device, the magnetic circuit system comprises a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl and a second magnetic bowl covered on the magnetic steel unit; the first magnetic bowl comprises a first magnetic bowl bottom wall which is supported and fixed on the basin frame, and the magnetic steel unit is supported on the first magnetic bowl bottom wall; the second magnetic bowl comprises a second magnetic bowl bottom wall and a second magnetic bowl side wall, the second magnetic bowl bottom wall and the first magnetic bowl bottom wall are arranged in a spaced and opposite mode, the second magnetic bowl side wall is bent and extended towards the direction close to the first magnetic bowl bottom wall from the second magnetic bowl bottom wall, and the magnetic steel unit, the first magnetic bowl and the second magnetic bowl side wall jointly enclose the magnetic gap. In the structure, because the magnetic steel unit is accommodated in the accommodating space which is enclosed by the first magnetic bowl and the second magnetic bowl together, all magnetic lines of force are blocked and return to the magnetic gap, so that the magnetic force is fully utilized, and the sensitivity of the sounding device is effectively improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a sound device according to the present invention;
FIG. 2 is an exploded perspective view of a sound device according to the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a schematic view of a skeleton of the sound device according to the present invention;
FIG. 5 is a schematic perspective view of a magnetic circuit system of a sound device according to the present invention;
fig. 6 is an exploded perspective view of a magnetic circuit system of a sound device according to the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a sound production device 100, which includes a frame 1, a vibration system 2, and a magnetic circuit system 3 having a magnetic gap 30. The vibration system 2 and the magnetic circuit system 3 are respectively supported on the basin frame 1, and the magnetic circuit system 3 drives the vibration system 2 to vibrate and sound.
In this embodiment, the frame 1 includes a bottom wall 11, an outer wall 12 extending from the periphery of the bottom wall 11 in a bent manner, and an inner wall 13 extending from the bottom wall 11 in a bent manner, wherein the outer wall 12 surrounds the inner wall 13 and is spaced from the inner wall 13.
The inner wall 13 is provided with through openings 131 extending through it, the through openings 131 extending in the vibration direction of the vibration system 2.
The bottom wall 11 and the inner wall 13 together enclose an accommodating space 10.
The vibration system 2 includes: a diaphragm 21, a bobbin 22, a voice coil 23, and an auxiliary diaphragm 24.
The vibrating diaphragm 21 includes a vibrating portion 211, a bent portion 212 bent and extended from a periphery of the vibrating portion 211, and a fixing portion 213 bent and extended from the bent portion 212 and fixed to the frame 1.
In this embodiment, specifically, the fixing portion 213 is used for fixing the diaphragm 21 to the frame 1, and includes a first fixing portion 2131 and a second fixing portion 2132; the first fixing portion 2131 is annular and fixed to the outer wall 12, and the second fixing portion 2132 is annular and fixed to the inner wall 13.
The hinge portion 212 is used to improve elastic support and vibration amplitude when the vibration portion 211 vibrates, and includes a first hinge portion 2121 and a second hinge portion 2122. The first collar part 2121 is disposed around the second collar part 2122 and spaced apart from each other. The first hinge portion 2121 is connected to the first fixing portion 2131 at a side away from the second hinge portion 2122, and the second hinge portion 2122 is connected to the second fixing portion 2132 at a side away from the first hinge portion 2121.
The vibration portion 211 radiates sound waves to generate sound when vibrating. Specifically, the vibration portion 211 is annular, the vibration portion 211 is located between the first collar portion 2121 and the second collar portion 2122, the outer side of the vibration portion 211 is connected to the first collar portion 2121, and the inner side of the vibration portion 211 is connected to the second collar portion 2122.
The framework 22 includes a flat wall 221 and an extension wall 222.
In this embodiment, the flat wall 221 is attached to a side of the vibration portion 211 close to the magnetic circuit system 3 to serve as a dome structure of the diaphragm 21, and the extension wall 222 is bent and extended from the flat wall 221 in a direction away from the diaphragm 21, and is used for connecting with the voice coil 23 and supporting the voice coil 23. In the present embodiment, the flat wall 221 has a ring shape.
Preferably, the vibrating portion 211 has a through hole 2111 penetrating therethrough, and the flat wall 221 completely covers the through hole 2111. Compared with the vibration part 211, the flat plate wall 221 is made of a rigid material, so that the high-frequency acoustic performance of the sound generating device 100 is improved, the thickness of the vibrating diaphragm 21 can be reduced to a certain extent due to the arrangement of the through holes 2111, and the vibration space of the vibration part 211 is effectively increased.
The voice coil 23 is inserted into the magnetic gap 30 and is fixedly connected to the extension wall 222. The voice coil 23 drives the extension wall 222 to vibrate to drive the flat wall 221 to vibrate, so as to drive the vibration portion 211 to vibrate and generate sound.
In the above structure, the flat wall 221 of the framework 22 serves as a top ball structure of the diaphragm 21 to radiate sound waves, and the extension 222 is used for fixing the voice coil 23, i.e., the framework 22 and the diaphragm 21 form an integrated structure, so that the fitting error of assembly between parts is reduced, the acoustic performance is improved, the assembly process is simplified, and the production efficiency is improved.
Preferably, the extension wall 222 includes a first extension wall 2221 bent and extended from the flat wall 221 toward the vibration portion 211 away from the diaphragm 21, and a second extension wall 2222 bent and extended from the first extension wall 2221 toward the magnetic circuit system 3. The second extension wall 2222 abuts against the outer side of the voice coil 23 and forms a fixed connection. The structure realizes that the extension wall 222 of the framework 22 is bonded from the outer side of the voice coil 23 to form a support for the voice coil 23, the structural design is more flexible for controlling the magnetic gap 30, and the design of the whole structure of the sound generating device 100 is more convenient.
The extension wall 222 may be an integral annular structure, or may be a separate structure that is enclosed into a ring shape, in this embodiment, the extension wall 222 includes three and is arranged at equal intervals.
One side of the auxiliary diaphragm 24 is fixed to the outer wall 12, and the other side is fixed to an end of the first extension wall 2221 away from the flat wall 2222, so as to prevent the bobbin 22 from swinging laterally, thereby avoiding lateral swinging of the voice coil 23 and improving stability of the sound generating device 100.
The magnetic circuit system 3 comprises a first magnetic bowl 31, a magnetic steel unit 32 fixed in the first magnetic bowl 31, a relief groove 33 penetrating through the first magnetic bowl 31 and matched with the second extension wall 2222, and a second magnetic bowl 34 covering the magnetic steel unit 32. That is, the shape and number of the escape grooves 33 are correspondingly matched with those of the second extension walls 2222.
In this embodiment, the magnetic circuit system 3 includes a second magnetic bowl 34 covered on the magnetic steel unit 32, and the second magnetic bowl 34 guides the magnetic force lines of the magnetic steel unit 32 near one side of the diaphragm 21 back to the magnetic gap 30, so that the magnetic force lines of the magnetic circuit system 3 are fully utilized, and the sensitivity of the sound generating device is effectively improved.
Specifically, the first magnetic bowl 31 includes a first magnetic bowl bottom wall 311 that is supported and fixed to the basin frame 1 and a first magnetic bowl side wall 312 that is bent and extended from the first magnetic bowl bottom wall 311 toward the direction close to the second magnetic bowl 34, and the magnetic steel unit 32 is supported on the first magnetic bowl bottom wall 311.
The second magnetic bowl 34 comprises a second magnetic bowl bottom wall 341 and a second magnetic bowl side wall 342, the second magnetic bowl bottom wall 341 and the first magnetic bowl bottom wall 311 are arranged opposite to each other at an interval, and the second magnetic bowl side wall 342 is formed by bending and extending the second magnetic bowl bottom wall 341 towards the direction close to the first magnetic bowl bottom wall 311.
The magnetic steel unit 32, the first magnetic bowl side wall 312 and the second magnetic bowl side wall 342 together enclose the magnetic gap 30. In this embodiment, the receding groove 33 extends along the vibration direction and penetrates through the first magnetic bowl side wall 312. The first extension wall 2221 is disposed around the outer side of the magnetic circuit system 3 at an interval, and the second extension wall 2222 extends into the magnetic gap 30 through the receding groove 33 and is connected to the voice coil 23.
In this embodiment, the second magnetic bowl bottom wall 341 is opposite to the first magnetic bowl bottom wall 311 at an interval, the second magnetic bowl side wall 342 is bent and extended from the second magnetic bowl bottom wall 341 to a direction close to the first magnetic bowl bottom wall 311, and the second magnetic bowl side wall 342 may abut against the first magnetic bowl side wall 312 and may also be spaced from the first magnetic bowl side wall 312. At this time, the receding groove 33 also penetrates through the second magnetic bowl side wall 342, so as to provide a more sufficient movement space for the second extending wall 2222 of the framework 22, thereby improving reliability.
Preferably, in the present embodiment, the magnetic circuit system 3 is installed in the accommodating space 10, and the relief grooves 33 are arranged opposite to the through holes 131 one by one. At this time, the first extension wall 2221 is annularly disposed on the outer side of the inner wall 13 and is disposed at an interval, and the second extension wall 2222 sequentially passes through the opening 131 and the receding groove 33 and extends into the magnetic gap 30 and is connected to the outer side of the voice coil 23.
Because the vibrating diaphragm 21 is fixed on the outer wall 12 and the inner wall 13 of the basin frame 1, the upper portion of the accommodating space 10 enclosed by the inner wall 13 can be exposed, in this embodiment, preferably, after the magnetic circuit system 3 is installed in the accommodating space 10, the top surface of the magnetic circuit system 3 is higher than the vibrating portion 211 (specifically, the flat plate wall 221 serving as a dome) along the vibrating direction, an exposed structure is formed, and the position of the maximum amplitude of the vibrating portion 211 is lower than or parallel to the top surface of the magnetic circuit system 3, that is, the vibrating diaphragm 21 surrounds and wraps the top of the magnetic circuit system 3 in the horizontal direction, so that the space of the product in the vibrating direction is saved, and the thickness of the product is effectively reduced.
Compared with the prior art, in the sound production device, the magnetic circuit system comprises a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl and a second magnetic bowl covered on the magnetic steel unit; the first magnetic bowl comprises a first magnetic bowl bottom wall which is supported and fixed on the basin frame, and the magnetic steel unit is supported on the first magnetic bowl bottom wall; the second magnetic bowl comprises a second magnetic bowl bottom wall and a second magnetic bowl side wall, the second magnetic bowl bottom wall and the first magnetic bowl bottom wall are arranged in a spaced and opposite mode, the second magnetic bowl side wall is bent and extended towards the direction close to the first magnetic bowl bottom wall from the second magnetic bowl bottom wall, and the magnetic steel unit, the first magnetic bowl and the second magnetic bowl side wall jointly enclose the magnetic gap. In the structure, because the magnetic steel unit is accommodated in the accommodating space which is enclosed by the first magnetic bowl and the second magnetic bowl together, all magnetic lines of force are blocked and return to the magnetic gap, so that the magnetic force is fully utilized, and the sensitivity of the sounding device is effectively improved.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is supported on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, the magnetic circuit system is provided with a magnetic gap, and the vibration system comprises a voice coil which is inserted into the magnetic gap;
the first magnetic bowl comprises a first magnetic bowl bottom wall which is supported and fixed on the basin frame, and the magnetic steel unit is supported on the first magnetic bowl bottom wall;
the second magnetic bowl comprises a second magnetic bowl bottom wall and a second magnetic bowl side wall, the second magnetic bowl bottom wall and the first magnetic bowl bottom wall are arranged in a spaced and opposite mode, the second magnetic bowl side wall is bent and extended towards the direction close to the first magnetic bowl bottom wall from the second magnetic bowl bottom wall, and the magnetic steel unit, the first magnetic bowl and the second magnetic bowl side wall jointly enclose the magnetic gap.
2. The sounding device according to claim 1, wherein the second magnetic bowl bottom wall is fixed to a side of the magnetic steel unit away from the first magnetic bowl.
3. The sounder device according to claim 1, wherein the first magnetic bowl includes a first magnetic bowl side wall extending from the first magnetic bowl bottom wall to a position close to the second magnetic bowl side wall, and the first magnetic bowl side wall, the second magnetic bowl side wall and the magnetic steel unit together enclose the magnetic gap.
4. The sounding device according to claim 1, wherein the magnetic steel unit comprises a first magnetic steel, a pole core and a second magnetic steel sequentially stacked on the first magnetic bowl bottom wall along the vibration direction, the second magnetic bowl bottom wall is fixed to the second magnetic steel, and the pole core partially overlaps with both the first magnetic bowl side wall and the second magnetic bowl side wall along the projection of the pole core along the vertical vibration direction.
5. The sounder device according to claim 4, wherein a projection of the pole piece in a vertical vibration direction falls entirely within the voice coil.
6. The sounding device according to claim 1, wherein the vibration system further comprises a diaphragm fixed to the frame, a bobbin connecting the diaphragm and the voice coil, and an auxiliary diaphragm fixed to the bobbin;
the vibrating diaphragm comprises a vibrating part, a corrugated ring part bent and extended from the periphery of the vibrating part and a fixing part bent and extended from the corrugated ring part and fixed on the basin stand; the framework is connected with the vibrating part;
one side of the auxiliary vibrating diaphragm is fixed on the basin frame, and the other side of the auxiliary vibrating diaphragm is fixed on the framework.
7. The sounding device according to claim 6, wherein the magnetic circuit system further comprises a relief groove, the relief groove penetrates through the first magnetic bowl and/or the second magnetic bowl and extends along the vibration direction of the diaphragm;
the framework extends to the magnetic gap through the abdicating groove and suspends the voice coil support in the magnetic gap.
8. The sounding device according to claim 7, wherein the frame comprises a bottom wall, an outer wall extending from the periphery of the bottom wall in a bent manner, and an inner wall extending from the bottom wall in a bent manner, the outer wall is arranged around the inner wall and spaced from the inner wall, the inner wall is provided with through holes penetrating through the inner wall, and the through holes extend along the vibration direction of the diaphragm;
the bottom wall and the inner wall jointly enclose an accommodating space, the magnetic circuit system is arranged in the accommodating space, and the abdicating grooves and the through holes are arranged in a one-to-one opposite mode;
the skeleton ring is located the inner wall outside and interval set up, the skeleton passes through in proper order the opening with the groove of stepping down extends to in the magnetic gap.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149544.3A CN110891230B (en) | 2019-11-21 | 2019-11-21 | Sound production device |
| PCT/CN2019/123899 WO2021097954A1 (en) | 2019-11-21 | 2019-12-09 | Sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149544.3A CN110891230B (en) | 2019-11-21 | 2019-11-21 | Sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110891230A true CN110891230A (en) | 2020-03-17 |
| CN110891230B CN110891230B (en) | 2021-12-24 |
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ID=69748302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911149544.3A Active CN110891230B (en) | 2019-11-21 | 2019-11-21 | Sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110891230B (en) |
| WO (1) | WO2021097954A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405438A (en) * | 2020-04-22 | 2020-07-10 | 湖北冠音泰科技有限公司 | Vibration sound production device |
| CN111641903A (en) * | 2020-05-20 | 2020-09-08 | 瑞声科技(新加坡)有限公司 | Sounding device |
| CN111641901A (en) * | 2020-05-08 | 2020-09-08 | 瑞声科技(新加坡)有限公司 | Sound production device |
| WO2022006964A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2022006977A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
| WO2022006968A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| WO2022047976A1 (en) * | 2020-09-04 | 2022-03-10 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
| CN114630249A (en) * | 2022-04-26 | 2022-06-14 | 歌尔股份有限公司 | Sound production module and electronic equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383853A (en) * | 2020-11-30 | 2021-02-19 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound producing device |
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| CN111641903A (en) * | 2020-05-20 | 2020-09-08 | 瑞声科技(新加坡)有限公司 | Sounding device |
| WO2022006964A1 (en) * | 2020-07-06 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
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| CN114630249A (en) * | 2022-04-26 | 2022-06-14 | 歌尔股份有限公司 | Sound production module and electronic equipment |
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