CN212785823U - Sounding device - Google Patents
Sounding device Download PDFInfo
- Publication number
- CN212785823U CN212785823U CN202021318064.3U CN202021318064U CN212785823U CN 212785823 U CN212785823 U CN 212785823U CN 202021318064 U CN202021318064 U CN 202021318064U CN 212785823 U CN212785823 U CN 212785823U
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- wall
- magnetic
- magnetic bowl
- bowl
- side wall
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
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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
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to an electroacoustic conversion field especially relates to a sounding device. The utility model discloses an among the sound production device, magnetic circuit is including being fixed in the magnetic bowl of basin frame and being fixed in the magnet steel unit of magnetic bowl, and the magnetic bowl sets up and forms the lateral wall in magnetic gap and form in the lateral wall and to keeping away from a plurality of steps that the magnet steel unit direction extends including the diapire that is used for fixed magnet steel unit, with the magnet steel unit interval, the through-hole has been seted up to the step, be equipped with on the inner wall of basin frame with step complex fracture, the fracture bottom is equipped with the fixed orifices that corresponds with the through-hole, and through the above-mentioned mode, can wear to establish through-hole and fixed orifices in proper order to be fixed in the basin frame with magnetic circuit through the mounting, increased magnetic circuit and basin frame's joint strength, magnetic circuit and.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an electroacoustic conversion field especially relates to a sounding device.
[ background of the invention ]
With the development of science and technology, more and more electronic devices are built in with sounding devices. Generally, the sound production device can provide a uniform magnetic field through magnetic steel, so that a voice coil which is electrified with alternating current vibrates in the uniform magnetic field, and the voice coil drives a vibrating diaphragm to vibrate so as to make the sound production device produce sound.
The sounder generally comprises a basin frame, a vibrating system fixed on the basin frame and a magnetic circuit system with a magnetic gap, wherein the magnetic circuit system drives the vibrating system to vibrate and sound, in the sounder in the prior art, the magnetic circuit system and the basin frame are bonded and fixed through glue, the bonding strength of the magnetic circuit system and the basin frame is lower, when the amplitude of the sounder is larger, the glue bonding force is insufficient, and the magnetic circuit system and the basin frame have the risk of separation.
Therefore, there is a need to provide a new sound generation device to solve the above technical problems.
[ summary of the invention ]
An object of the utility model is to provide a sounding device, solve among the prior art magnetic circuit and basin frame bonding strength low, when the amplitude is great the magnetic circuit breaks away from the technical problem from the basin frame easily.
The technical scheme of the utility model as follows: provides a sound production device, which comprises a basin frame, a vibration system supported on the basin frame and a magnetic circuit system driving the vibration system to vibrate and produce sound, wherein the magnetic circuit system is provided with a magnetic gap, the vibration system comprises a voice coil inserted in the magnetic gap,
the magnetic circuit system comprises a magnetic bowl fixed on the basin frame and a magnetic steel unit fixed on the magnetic bowl; the magnetic bowl comprises a bottom wall for fixing the magnetic steel unit, a side wall which is arranged at an interval with the magnetic steel unit and forms the magnetic gap, and a plurality of steps which are formed on the side wall and extend towards the direction far away from the magnetic steel unit, wherein the steps are provided with through holes;
the basin frame comprises a bottom plate, an outer wall and an inner wall, the outer wall extends from the outer periphery of the bottom plate in a bending mode, the inner wall extends from the inner periphery of the bottom plate in a bending mode, the outer wall is arranged around the inner wall and is spaced from the inner wall, a first accommodating space used for accommodating the magnetic circuit system is enclosed by the inner wall, the inner wall comprises a first side far away from the bottom plate and a second side connected with the bottom plate, a fracture penetrates through the inner wall and is matched with the step, the fracture extends from the first side and/or the second side along the vibration direction of the vibration system, the bottom of the fracture is abutted to the step, and a fixing hole corresponding to the through hole is formed in the bottom of the fracture; and
the sounder further comprises a fixing piece connected with the magnetic circuit system and the basin frame, and the fixing piece sequentially penetrates through the through hole and the fixing hole corresponding to the through hole to fix the magnetic circuit system on the basin frame.
Preferably, the magnetic bowl comprises a first magnetic bowl for accommodating the magnetic steel unit and a second magnetic bowl covered on the magnetic steel unit, and the first magnetic bowl comprises a first magnetic bowl bottom wall serving as the bottom wall and a first magnetic bowl side wall bent and extended from the first magnetic bowl bottom wall to the direction close to the second magnetic bowl; the second magnetic bowl comprises a second magnetic bowl bottom wall which is opposite to the first magnetic bowl bottom wall and is arranged at intervals, and a second magnetic bowl side wall which is bent and extended from the second magnetic bowl bottom wall to the direction close to the first magnetic bowl side wall; the first magnetic bowl side wall and the second magnetic bowl side wall jointly form the side walls, and the magnetic steel unit and the first magnetic bowl side wall and the second magnetic bowl side wall jointly form the magnetic gap.
Preferably, the length of the fracture is smaller than the height of the inner wall along the vibration direction.
Preferably, the height of the bottom wall of the second magnetic bowl in the vibration direction is greater than the height of the first side in the vibration direction, and the sound generating device further comprises a fixing plate which is stacked on the first side and abuts against the side wall of the second magnetic bowl.
Preferably, the step includes by first magnetism bowl lateral wall is close to the outward flange of second magnetism bowl one side is to keeping away from the first step that second magnetism bowl lateral wall direction bending extension was extended and by first magnetism bowl lateral wall is close to the outward flange of first magnetism bowl one side is to keeping away from the second step that second magnetism bowl lateral wall direction bending extension was extended.
Preferably, the fracture comprises a first fracture corresponding to the first step and a second fracture corresponding to the second step, the first fracture extends from the second side, and the second fracture extends from the first side.
Preferably, the first steps and the second steps are staggered in the circumferential direction of the magnetic bowl, and the first fractures and the second fractures are staggered in the circumferential direction of the inner wall.
Preferably, the vibration system further comprises a diaphragm fixed on the outer wall, a framework connected with the diaphragm and the voice coil, and an auxiliary diaphragm connected with the framework and the inner wall.
Preferably, the framework comprises an inner ring support coaxially stacked on one side of the voice coil close to the diaphragm along the vibration direction, an outer ring support surrounding the inner wall and spaced from the inner wall, and a support connecting the inner ring support and the outer ring support and sequentially penetrating through the side wall and the inner wall;
the lateral wall is equipped with run through on it and with the groove of stepping down that the support corresponds, the inner wall be equipped with run through on it and with the support with the groove of stepping down corresponds the opening that sets up.
Preferably, the diaphragm includes a first fixed portion fixed to the outer wall, a second fixed portion fixed to the outer periphery of the outer ring support plate, and a first hinge portion connecting the first fixed portion and the second fixed portion; the auxiliary diaphragm comprises a third fixing part fixed on the inner periphery of the outer ring support plate, a fourth fixing part fixed on the inner wall and a second flange part connected with the third fixing part and the fourth fixing part.
Preferably, the magnet steel unit includes the edge the vibration direction is folded in proper order and is located 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 fixing piece is a screw, and the through hole and the fixing hole are both threaded holes.
The beneficial effects of the utility model reside in that: the utility model discloses an among the sound production device, magnetic circuit is including being fixed in the magnetic bowl of basin frame and being fixed in the magnet steel unit of magnetic bowl, and the magnetic bowl sets up and forms the lateral wall in magnetic gap and form in the lateral wall and to keeping away from a plurality of steps that the magnet steel unit direction extends including the diapire that is used for fixed magnet steel unit, with the magnet steel unit interval, the through-hole has been seted up to the step, be equipped with on the inner wall of basin frame with step complex fracture, the fracture bottom is equipped with the fixed orifices that corresponds with the through-hole, and through the above-mentioned mode, can wear to establish through-hole and fixed orifices in proper order to be fixed in the basin frame with magnetic circuit through the mounting, increased magnetic circuit and basin frame's joint strength, magnetic circuit and.
[ description of the drawings ]
Fig. 1 is a perspective view of the sound production device of the present invention;
FIG. 2 is a cross-sectional view A-A of the sound device of FIG. 1;
FIG. 3 is an exploded view of the sound device of FIG. 1;
FIG. 4 is a diagram of the magnetic circuit system and the basin stand of the sound device of the present invention;
FIG. 5 is an exploded view of the magnetic circuit system and the frame of the sound device of the present invention;
fig. 6 is an exploded view of the magnetic circuit system and the basin frame of the sound generator of the present invention from another view angle;
fig. 7 is a matching diagram of the first magnetic bowl and the second magnetic bowl in the sound generating device of the present invention;
fig. 8 is an exploded view of the first magnetic bowl and the second magnetic bowl of the sound generating device of the present invention.
[ detailed description ] embodiments
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 8, an embodiment of the present invention provides a sound generating 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.
The basin stand 1 includes and is annular diapire 11, by outer wall 12 that 11 outer peripheral edge of diapire buckles and extends and by inner wall 13 that 11 inner peripheral edge of diapire buckles and extends, outer wall 12 encircles inner wall 13 sets up and separates each other, and inner wall 13 encloses into the first accommodation space 101 that is used for holding magnetic circuit 3, and bottom plate 11, outer wall 12 and inner wall 13 enclose jointly into the second accommodation space 102 that is used for holding vibration system, and inner wall 13 is including keeping away from the first side 13a of bottom plate 11 and with the second side 13b that bottom plate 11 is connected.
The magnetic circuit system 3 comprises a first magnetic bowl 31, a magnetic steel unit 32 fixed on the first magnetic bowl 31, and a second magnetic bowl 33 covered on the magnetic steel unit 32, wherein the first magnetic bowl 31 comprises a first magnetic bowl bottom wall 311 for supporting the magnetic steel unit 32, a first magnetic bowl side wall 312 bent and extended from the first magnetic bowl bottom wall 311 to a direction close to the second magnetic bowl 33, and a first step 313 bent and extended from the outer edge of the first magnetic bowl side wall 312 close to one side of the second magnetic bowl 33 to a direction far away from the first magnetic bowl side wall 312; the second magnetic bowl 33 comprises a second magnetic bowl bottom wall 331 opposite to the first magnetic bowl bottom wall 311 and arranged at an interval, a second magnetic bowl side wall 332 bent and extended from the second magnetic bowl bottom wall 331 to a direction close to the first magnetic bowl side wall 312, and a second step 333 bent and extended from the outer edge of the second magnetic bowl side wall 332 close to one side of the first magnetic bowl 31 to a direction far away from the second magnetic bowl side wall 332; the first magnetic bowl side wall 312 and the second magnetic bowl side wall 332 together form a magnetic bowl side wall 3a, and the magnetic steel unit 32 and the first magnetic bowl side wall 312 and the second magnetic bowl side wall 332 together form a magnetic gap 30. The first step 313 is provided with a first through hole 314, and the second step 333 is provided with a second through hole 334.
The inner wall 13 of the frame 1 is further provided with a first fracture 131 penetrating through the inner wall and matched with the first step 313 and a second fracture 132 penetrating through the inner wall and matched with the second step 333, the first fracture 131 and the second fracture 132 both extend along the vibration direction of the vibration system 2, the first fracture 131 extends from the second side 13b, and the second fracture 13a extends from the first side 13 a. The length of each of the first discontinuity 131 and the second discontinuity 132 is smaller than the height of the inner wall 13 in the direction of vibration, that is, the first discontinuity 131 and the second discontinuity 132 extend partially over the inner wall 13. The bottom 131a of the first fracture 131 abuts against the first step 313, the bottom 132a of the second fracture 132 abuts against the second step 333, the bottom 131a of the first fracture 131 is provided with a first fixing hole 133 corresponding to the first through hole 314, the bottom 132a of the second fracture 132 is provided with a second fixing hole 134 corresponding to the second through hole 334, the sound production device 100 further comprises a fixing member (not shown) connecting the magnetic circuit system 3 and the basin frame 1, when the magnetic circuit system 3 is assembled with the basin frame 1, the magnetic circuit system 3 is fixed to the basin frame 1 by sequentially penetrating the first through hole 314 and the first fixing hole 133 through the fixing member and sequentially penetrating the second through hole 334 and the second fixing hole 134 through the fixing member, the fixing member may be a screw, correspondingly, the first through hole 314 and the first fixing hole 133 as well as the second through hole 334 and the second fixing hole 134 are threaded holes, compared with the glue bonding method, the fixing mode increases the bonding strength of the magnetic circuit system 3 and the basin frame 1, and avoids the separation of the magnetic circuit system 3 and the basin frame 1 when the amplitude of the sounding device 100 is large.
In an alternative embodiment, the first step 313 and the second step 333 are staggered in the circumferential direction of the magnetic circuit system 3, and correspondingly, the first discontinuity 131 and the second discontinuity 132 are staggered in the circumferential direction of the inner wall 13.
In an alternative embodiment, the height of the second magnetic bowl bottom wall 331 in the vibration direction is greater than the height of the first side 13a in the vibration direction, that is, the top of the magnetic circuit system 3 extends out of the first accommodating cavity 101, the sound generating device 100 further includes a fixing plate 40 stacked on the first side 13a and abutting against the second magnetic bowl side wall 332, specifically, the fixing plate 40 is in a ring shape, and the inner side wall of the fixing plate 40 abuts against the second magnetic bowl side wall 332.
In an alternative embodiment, the bobbin 22 includes an inner ring support 221 coaxially stacked on the voice coil 23 near the diaphragm 21 along the vibration direction, an outer ring support 222 surrounding the inner wall 13 and spaced from the inner wall 13, and a support 223 connecting the inner ring support 221 and the outer ring support 222 and sequentially penetrating through the magnetic bowl side wall 3a and the inner wall 13.
Correspondingly, the magnetic bowl side wall 3a is provided with a yielding groove 3b which runs through the magnetic bowl side wall and corresponds to the support 223, the inner wall 13 is provided with a through opening 135 which runs through the magnetic bowl side wall and corresponds to the yielding groove 3b, and the yielding groove 3b is formed by a first notch 312a arranged on the first magnetic bowl side wall 312 and a second notch 332a arranged on the second magnetic bowl side wall 332.
The diaphragm 21 includes a first fixing portion 211 fixed to the outer wall 12, a second fixing portion 212 fixed to the outer periphery of the outer ring support 222, and a first hinge portion 213 connecting the first fixing portion 211 and the second fixing portion 212; the auxiliary diaphragm 24 includes a third fixing portion 241 fixed to the inner periphery of the outer annular support plate 222, a fourth fixing portion 242 fixed to the inner wall 13, and a second flange portion 243 connecting the third fixing portion 241 and the fourth fixing portion 242. In the above structure, the outer ring support plate 222 of the framework 22 partially serves as a top ball structure of the diaphragm 21 to realize radiation of sound waves, and the inner ring support 221 is connected with the voice coil 23, so that the framework 22 and the diaphragm 21 are integrated into a whole, the matching error of assembly between parts is reduced, the acoustic performance is improved, the assembly process is simplified, and the production efficiency is improved.
The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.
Claims (12)
1. A sounder, which comprises a basin frame, a vibration system supported on the basin frame and a magnetic circuit system driving the vibration system to vibrate and sound, wherein the magnetic circuit system is provided with a magnetic gap, the vibration system comprises a voice coil inserted in the magnetic gap, and the sounder is characterized in that,
the magnetic circuit system comprises a magnetic bowl fixed on the basin frame and a magnetic steel unit fixed on the magnetic bowl; the magnetic bowl comprises a bottom wall for fixing the magnetic steel unit, a side wall which is arranged at an interval with the magnetic steel unit and forms the magnetic gap, and a plurality of steps which are formed on the side wall and extend towards the direction far away from the magnetic steel unit, wherein the steps are provided with through holes;
the basin frame comprises a bottom plate, an outer wall and an inner wall, the outer wall extends from the outer periphery of the bottom plate in a bending mode, the inner wall extends from the inner periphery of the bottom plate in a bending mode, the outer wall is arranged around the inner wall and is spaced from the inner wall, a first accommodating space used for accommodating the magnetic circuit system is enclosed by the inner wall, the inner wall comprises a first side far away from the bottom plate and a second side connected with the bottom plate, a fracture penetrates through the inner wall and is matched with the step, the fracture extends from the first side and/or the second side along the vibration direction of the vibration system, the bottom of the fracture is abutted to the step, and a fixing hole corresponding to the through hole is formed in the bottom of the fracture; and
the sounder further comprises a fixing piece connected with the magnetic circuit system and the basin frame, and the fixing piece sequentially penetrates through the through hole and the fixing hole corresponding to the through hole to fix the magnetic circuit system on the basin frame.
2. The sounder device according to claim 1, wherein the magnetic bowl includes a first magnetic bowl for accommodating the magnetic steel unit and a second magnetic bowl covering the magnetic steel unit, and the first magnetic bowl includes a first magnetic bowl bottom wall serving as the bottom wall and a first magnetic bowl side wall extending from the first magnetic bowl bottom wall in a direction approaching the second magnetic bowl; the second magnetic bowl comprises a second magnetic bowl bottom wall which is opposite to the first magnetic bowl bottom wall and is arranged at intervals, and a second magnetic bowl side wall which is bent and extended from the second magnetic bowl bottom wall to the direction close to the first magnetic bowl side wall; the first magnetic bowl side wall and the second magnetic bowl side wall jointly form the side walls, and the magnetic steel unit and the first magnetic bowl side wall and the second magnetic bowl side wall jointly form the magnetic gap.
3. The sounder device according to claim 2, wherein a length of the break is less than a height of the inner wall in the direction of vibration.
4. The sounder device according to claim 2, wherein a height of the second magnetic bowl bottom wall in the vibration direction is greater than a height of the first side in the vibration direction, and the sounder device further comprises a fixing plate stacked on the first side and abutting against a side wall of the second magnetic bowl.
5. The sounding device according to claim 2, wherein the step comprises a first step extending from an outer edge of the first magnetic bowl side wall close to the second magnetic bowl side to a direction away from the second magnetic bowl side wall, and a second step extending from an outer edge of the first magnetic bowl side wall close to the first magnetic bowl side to a direction away from the second magnetic bowl side wall.
6. The sounder device according to claim 5, wherein the break comprises a first break corresponding to the first step and a second break corresponding to the second step, the first break extending from the second side and the second break extending from the first side.
7. The sounder device according to claim 6, wherein the first and second steps are staggered circumferentially of the magnetic bowl, and the first and second discontinuities are staggered circumferentially of the inner wall.
8. The sounding device according to claim 1, wherein the vibration system further comprises a diaphragm fixed to the outer wall, a bobbin connecting the diaphragm and the voice coil, and an auxiliary diaphragm connecting the bobbin and the inner wall.
9. The sounding device according to claim 8, wherein the bobbin comprises an inner ring support coaxially stacked on a side of the voice coil close to the diaphragm along the vibration direction, an outer ring support surrounding the inner wall and spaced from the inner wall, and a support connecting the inner ring support and the outer ring support and sequentially penetrating through the side wall and the inner wall;
the lateral wall is equipped with run through on it and with the groove of stepping down that the support corresponds, the inner wall be equipped with run through on it and with the support with the groove of stepping down corresponds the opening that sets up.
10. The sounding device according to claim 9, wherein the diaphragm comprises a first fixing portion fixed to the outer wall, a second fixing portion fixed to an outer periphery of the outer ring support plate, and a first hinge portion connecting the first fixing portion and the second fixing portion; the auxiliary diaphragm comprises a third fixing part fixed on the inner periphery of the outer ring support plate, a fourth fixing part fixed on the inner wall and a second flange part connected with the third fixing part and the fourth fixing part.
11. The sounding device according to claim 2, 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 a projection of the pole core along the vertical vibration direction.
12. The sounder device according to claim 1, wherein the fastener is a screw, and the through hole and the fixing hole are both threaded holes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021318064.3U CN212785823U (en) | 2020-07-06 | 2020-07-06 | Sounding device |
| PCT/CN2020/102049 WO2022006928A1 (en) | 2020-07-06 | 2020-07-15 | Sound generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021318064.3U CN212785823U (en) | 2020-07-06 | 2020-07-06 | Sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212785823U true CN212785823U (en) | 2021-03-23 |
Family
ID=75076259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021318064.3U Active CN212785823U (en) | 2020-07-06 | 2020-07-06 | Sounding device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN212785823U (en) |
| WO (1) | WO2022006928A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201435821Y (en) * | 2009-03-20 | 2010-03-31 | 瑞声声学科技(常州)有限公司 | Sounding device with improved frame |
| CN202111850U (en) * | 2011-05-24 | 2012-01-11 | 瑞声声学科技(常州)有限公司 | Sounder |
| CN202873044U (en) * | 2012-09-14 | 2013-04-10 | 瑞声光电科技(常州)有限公司 | Centering disk and loudspeaker using centering disk |
| CN206602658U (en) * | 2017-03-30 | 2017-10-31 | 歌尔丹拿音响有限公司 | Loudspeaker |
| CN107493552B (en) * | 2017-09-29 | 2021-01-22 | 努比亚技术有限公司 | Loudspeaker and mobile terminal with same |
| WO2020227956A1 (en) * | 2019-05-10 | 2020-11-19 | 瑞声声学科技(深圳)有限公司 | Magnetic circuit system and a loudspeaker using same |
-
2020
- 2020-07-06 CN CN202021318064.3U patent/CN212785823U/en active Active
- 2020-07-15 WO PCT/CN2020/102049 patent/WO2022006928A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022006928A1 (en) | 2022-01-13 |
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