CN118283505A - Loudspeaker with multiple magnetic circuit structures - Google Patents
Loudspeaker with multiple magnetic circuit structures Download PDFInfo
- Publication number
- CN118283505A CN118283505A CN202410712018.8A CN202410712018A CN118283505A CN 118283505 A CN118283505 A CN 118283505A CN 202410712018 A CN202410712018 A CN 202410712018A CN 118283505 A CN118283505 A CN 118283505A
- Authority
- CN
- China
- Prior art keywords
- magnetic circuit
- support ring
- magnetic
- voice coil
- vibration
- 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.)
- Pending
Links
- 238000013016 damping Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 8
- 238000010295 mobile communication Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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
- H04R9/06—Loudspeakers
-
- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides a loudspeaker with a multi-magnetic-circuit structure, which comprises a basin frame with an accommodating space, a vibration system accommodated in the accommodating space and at least two magnetic circuit systems for driving the vibration system to vibrate and sound, wherein each magnetic circuit system comprises a magnetic yoke and magnetic steel arranged above the magnetic yoke, the magnetic yoke comprises a bottom plate and side walls which are bent and extended along the edges of the bottom plate, the loudspeaker with the multi-magnetic-circuit structure further comprises a support ring fixed on the basin frame and arranged around the magnetic yoke and a damping piece clamped between the support ring and the side walls, the support ring and the damping piece suspend the magnetic circuit system in the accommodating space, and vibration of the magnetic circuit system counteracts vibration sense generated by at least part of the vibration system.
Description
Technical Field
The invention relates to the field of electroacoustic conversion, in particular to a loudspeaker with a multi-magnetic circuit structure.
Background
With the rapid development of mobile communication technology in recent years, consumers increasingly use mobile communication devices with voice functions, such as cellular phones, palm game players, portable computers, laptop computers, multimedia players, and other devices capable of communicating through public or private communication networks. The loudspeaker with the multi-magnetic circuit structure is used as a playing device with a voice function, and the vibration stability of the loudspeaker is directly related to the experience of a user and the service life of a product.
In the related art, the loudspeaker with the multi-magnetic circuit structure has strong vibration feeling when producing sound and vibrating.
Accordingly, there is a need to provide a new speaker to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a loudspeaker with good stability of a magnetic circuit system.
The technical scheme of the invention is as follows: the invention provides a loudspeaker with a multi-magnetic-circuit structure, which comprises a basin frame with an accommodating space, a vibration system accommodated in the accommodating space and at least two magnetic circuit systems for driving the vibration system to vibrate and sound, wherein each magnetic circuit system comprises a magnetic yoke and magnetic steel arranged above the magnetic yoke, the magnetic yoke comprises a bottom plate and side walls which are bent and extended along the edge of the bottom plate, the loudspeaker with the multi-magnetic-circuit structure further comprises a support ring fixed on the basin frame and arranged around the magnetic yoke and a damping piece clamped between the support ring and the side walls, the support ring and the damping piece suspend the magnetic circuit system in the accommodating space, and vibration of the magnetic circuit system counteracts vibration sense generated by at least part of the vibration system.
Preferably, the material of the support ring is plastic or metal.
Preferably, the material of the damping piece is silica gel or rubber.
Preferably, the magnetic circuit system comprises a first magnetic circuit system and a second magnetic circuit system which is arranged at intervals with the first magnetic circuit system, the basin frame comprises a main body part and first connecting parts, the main body part is formed by enclosing, the first connecting parts are connected with two sides of the main body part, and the first connecting parts divide the accommodating space into a first accommodating space for accommodating the first magnetic circuit system and a second accommodating space for accommodating the second magnetic circuit system.
Preferably, the support ring comprises a first support ring and a second support ring arranged at intervals with the first support ring, the first support ring is arranged around the first magnetic circuit system, and the second support ring is arranged around the second magnetic circuit system.
Preferably, the support ring further comprises a second connection part connecting the first support ring and the second support ring, and the second connection part is fixed to the first connection part.
Preferably, the first support ring and the second support ring each include an annular body portion and a joint portion extending from the annular body portion to be fixed with the damper, the annular body portion being fixed with the tub frame.
Preferably, the loudspeaker with multiple magnetic circuits further comprises an electric connecting piece fixed on the first connecting part, the electric connecting piece comprises a first electric connecting piece and a second electric connecting piece arranged adjacent to the first electric connecting piece, the vibration system comprises a first voice coil and a second voice coil arranged at intervals with the first voice coil, the first voice coil part stretches into the first magnetic circuit, the second voice coil part stretches into the second magnetic circuit, and the first voice coil and the second voice coil are electrically connected with an external circuit through the first electric connecting piece and the second electric connecting piece.
Preferably, the electrical connector includes a first fixing portion electrically connected to the first voice coil, a second fixing portion electrically connected to the second voice coil, a third fixing portion electrically connected to an external circuit, and a third connecting portion connecting the first fixing portion, the second fixing portion, and the third fixing portion.
Preferably, the basin stand further comprises a first protruding portion extending into the first accommodating space and a second protruding portion extending into the second accommodating space, wherein the first protruding portion is fixed with the first supporting ring, and the second protruding portion is fixed with the second supporting ring.
The invention has the following advantages: the invention provides a loudspeaker with a multi-magnetic circuit structure, which comprises a support ring fixed on a basin frame and surrounding a magnetic yoke and a damping piece clamped between the magnetic yoke and the support ring, wherein the support ring and the damping piece suspend a magnetic circuit system in an accommodating space.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
Fig. 1 is a schematic perspective view of a speaker with multiple magnetic circuits according to embodiment 1 of the present invention;
Fig. 2 is a schematic perspective view of a speaker with multiple magnetic circuits according to embodiment 2 of the present invention;
fig. 3 is an exploded view of the multi-magnetic circuit speaker shown in fig. 1;
fig. 4 is an exploded view of the multi-magnetic circuit speaker shown in fig. 2;
FIG. 5 is a cross-sectional view of the multi-magnetic circuit speaker of FIG. 1 taken along line A-A;
Fig. 6 is a cross-sectional view of the multi-magnetic circuit structure speaker shown in fig. 1 along line B-B;
FIG. 7 is a perspective view of the multi-magnetic circuit loudspeaker of FIG. 1 with the diaphragm removed;
fig. 8 is a cross-sectional view of the multi-magnetic circuit structure speaker shown in fig. 2 along line C-C.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1,3 and 5-7, the present invention provides a speaker 100 with multiple magnetic circuits, which includes a frame 1 having an accommodating space 10, a vibration system 2 accommodated in the accommodating space 10, a magnetic circuit 3 driving the vibration system 2 to vibrate and sound, a support ring 4 fixed on the frame 1, a damping member 5 clamped between the magnetic circuit 3 and the support ring 4, and an electrical connection member 6 fixed on the frame 1, wherein the magnetic circuit 3 includes a first magnetic circuit 31 and a second magnetic circuit 32 spaced from the first magnetic circuit 31, and in other embodiments, the number of the magnetic circuits 3 may be three or more.
The basin stand 1 comprises a main body 11 surrounding the accommodating space 10 and a first connecting part 12 connected with two sides of the main body 11, the accommodating space 10 is divided into a first accommodating space 101 accommodating the first magnetic circuit system 31 and a second accommodating space 102 accommodating the second magnetic circuit system 32 by the first connecting part 12, and the electric connector 6 is fixed on the first connecting part 12.
The basin stand 1 further comprises a first protruding part 13 extending into the first receiving space 101 and a second protruding part 14 extending into the second receiving space 102.
The vibration system 2 comprises a vibrating diaphragm 21 and a first voice coil 22 vibrating the vibrating diaphragm 21 to generate vibration and a second voice coil 23 arranged at intervals with the first voice coil 22, the vibrating diaphragm 21 comprises a turndown ring 211, a fixing part 212 connected with one end of the turndown ring 211 and a plane part 213 connected with the other end of the turndown ring 211, the fixing part 212 is fixed with the frame 1, one side of the plane part 213 away from the voice coil 22 is stuck with a reinforcing part 214, the first voice coil 22 part stretches into the first magnetic circuit 31, the second voice coil 23 part stretches into the second magnetic circuit 32, the first voice coil 22 comprises an inner ring part 221 and an outer ring part 222 extending along the whole circumferential circle part of the inner ring part 211, the second voice coil 23 has the same structure as the first voice coil 22, the first voice coil 22 comprises a first lead wire 223, the second voice coil 23 comprises a second lead wire 233, the first lead wire bulge 223 is electrically connected with the second voice coil 233 along the first lead wire 13 to the second lead wire 14 or the second lead wire 233, and the second voice coil is electrically connected with the first voice coil 14 or the second voice coil 233, and the second voice coil 23 is electrically connected with the second lead wire 14, and the second voice coil 3 is electrically connected with the second lead wire 12.
The first magnetic circuit 31 includes a magnetic yoke 311, a magnetic steel 312 disposed above the magnetic yoke 311, and a pole core 313 disposed above the magnetic steel 312, the magnetic yoke 311 includes a bottom plate 3111 and a side wall 3112 extending along an edge of the bottom plate 3111, the first voice coil 22 is suspended in a magnetic gap between the magnetic steel 312 and the side wall 3112, the support ring 4 is disposed around the magnetic yoke 311, the damping member 5 is clamped between the support ring 4 and the side wall 3112, the second magnetic circuit 32 has the same structure as the first magnetic circuit 31, and is not repeated, the support ring 4 and the damping member 5 suspend the magnetic circuit 3 in the accommodating space 10, and vibration of the magnetic circuit 3 counteracts at least part of vibration generated by the vibration system 2.
The support ring 4 comprises a first support ring 41 and a second support ring 42 which is arranged at intervals with the first support ring 41, the first support ring 41 is arranged around the first magnetic circuit system 31, and the second support ring 42 is arranged around the second magnetic circuit system 32.
The first support ring 41 and the second support ring 42 each include an annular main body 411 and a joint portion 412 extending from the annular main body 411 and fixed to the damper 5, the annular main body 411 is fixed to the basin frame 1, the first protruding portion 13 is fixed to the first support ring 41, the second protruding portion 14 is fixed to the second support ring 42, and the first support ring 41 and the second support ring 42 are of a split structure formed in a split manner.
The material of the support ring 4 is plastic, the support ring 4 is adhesively connected with the basin stand 1, and in other embodiments, the material of the support ring 4 is metal.
The material of the damping member 5 is silica gel, the connection mode of the damping member 5 and the support ring 4 is adhesive, and in other embodiments, the material of the damping member 5 is rubber.
The first supporting ring 41 and the damping piece 5 suspend the first magnetic circuit system 31 in the first accommodating space 101, the second supporting ring 42 and the damping piece 5 suspend the second magnetic circuit system 32 in the second accommodating space 102, and the vibration of the magnetic circuit system 3 counteracts the vibration sense generated by the vibration of at least part of the vibration system 2.
The electrical connector 6 includes a first electrical connector 61 and a second electrical connector 62 disposed adjacent to the first electrical connector 61, the first electrical connector 61 includes a first fixing portion 611 electrically connected to the first voice coil 22, a second fixing portion 612 electrically connected to the second voice coil 23, a third fixing portion 613 electrically connected to an external circuit, and a third connecting portion 614 connecting the first fixing portion 611, the second fixing portion 612, and the third fixing portion 613, the second electrical connector 62 includes a first fixing portion 621 electrically connected to the first voice coil 22, a second fixing portion 622 electrically connected to the second voice coil 23, a third fixing portion 623 electrically connected to an external circuit, and a third connecting portion 623 connecting the first fixing portion 621, the second fixing portion 622, and the third fixing portion 623, the first lead 223 electrically connects the second voice coil 23 to the external circuit through the first fixing portion 611 and the first fixing portion 614 of the second electrical connector 62, and the second lead 223 electrically connects the second lead 23 to the second voice coil 23 through the second lead 233.
Example 2
Referring to fig. 2, fig. 4 and fig. 8, the multi-magnetic circuit structure speaker 100a of embodiment 2 is substantially the same as the multi-magnetic circuit structure speaker 100 of the embodiment, and the same parts are not repeated, and compared with the multi-magnetic circuit structure speaker of embodiment 1, the difference between embodiment 2 and embodiment 1 is that the structures of the support ring and the basin stand are different, and the support ring and the basin stand structure of embodiment 2 are described below:
The basin stand 1a includes a main body 11a surrounding the accommodating space and a first connecting portion 12a connected to two sides of the main body 11a, the first connecting portion 12a divides the accommodating space 10a into a first accommodating space 101a accommodating the first magnetic circuit system 31a and a second accommodating space 102a accommodating the second magnetic circuit system 32a, and the electrical connector 6a is fixed on the first connecting portion 12a.
The support ring 4a includes a first support ring 41a surrounding the first magnetic circuit system 31a, a second support ring 42a surrounding the second magnetic circuit system 32a, and a second connection portion 43a connecting the first support ring 41a and the second support ring 42a, wherein the second connection portion 43a is fixed on the first connection portion 12a, and the first support ring 41a, the second support ring 42a, and the second connection portion 43a are integrally formed.
The support ring 4a is fixed on the basin frame 1a and is arranged around the magnetic circuit system 3a, the support ring 4a and the damping piece 5a suspend the first magnetic circuit system 31a and the second magnetic circuit system 32a in the accommodating space 10a together, and vibration of the magnetic circuit system 3a counteracts vibration sense generated by vibration of at least part of the vibration system 2 a.
Compared with the prior art, the invention provides a loudspeaker with a multi-magnetic-circuit structure, which comprises a basin frame with an accommodating space, a vibration system accommodated in the accommodating space and at least two magnetic circuit systems for driving the vibration system to vibrate and sound, wherein each magnetic circuit system comprises a magnetic yoke and magnetic steel arranged above the magnetic yoke, the magnetic yoke comprises a bottom plate and side walls which are bent and extended along the edge of the bottom plate, the loudspeaker with the multi-magnetic-circuit structure further comprises a support ring fixed on the basin frame and arranged around the magnetic yoke and a damping piece clamped between the support ring and the side walls, the support ring and the damping piece suspend the magnetic circuit system in the accommodating space, and vibration of the magnetic circuit system counteracts vibration sense generated by at least part of the vibration system.
While the invention has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the invention.
Claims (10)
1. The utility model provides a many magnetic circuit structure speaker, includes the basin frame that has accommodation space, accept in vibration system and the drive in the accommodation space vibration sound production of vibration system's two at least magnetic circuit, each magnetic circuit include the yoke with set up in magnet steel above the yoke, the yoke include the bottom plate and along the lateral wall that the bottom plate edge buckle and extend, its characterized in that, many magnetic circuit structure speaker still includes be fixed in the basin frame and encircle the support ring that the yoke set up with the centre gripping in support ring with damping piece between the lateral wall, support ring with damping piece will magnetic circuit hangs in the accommodation space, magnetic circuit vibration offset at least part the vibration sense that vibration system produced.
2. A multi-magnetic structure speaker according to claim 1, wherein the material of the support ring is plastic or metal.
3. A multi-magnetic structure speaker according to claim 1, wherein the damping member is made of silica gel or rubber.
4. The loudspeaker of claim 1, wherein the magnetic circuit comprises a first magnetic circuit and a second magnetic circuit spaced from the first magnetic circuit, the frame comprises a main body portion surrounding the accommodating space and first connecting portions connected to two sides of the main body portion, and the accommodating space is divided into a first accommodating space accommodating the first magnetic circuit and a second accommodating space accommodating the second magnetic circuit by the first connecting portions.
5. The loudspeaker of claim 4, wherein the support ring comprises a first support ring and a second support ring spaced apart from the first support ring, the first support ring being disposed around the first magnetic circuit system, the second support ring being disposed around the second magnetic circuit system.
6. The multi-magnetic circuit speaker of claim 5, wherein the support ring further comprises a second connection portion connecting the first support ring and the second support ring, the second connection portion being secured to the first connection portion.
7. A multi-magnetic circuit speaker as claimed in claim 5, wherein the first and second support rings each include an annular body portion and an engagement portion extending from the annular body portion to be secured to the damper, the annular body portion being secured to the frame.
8. The loudspeaker of claim 4, further comprising an electrical connector secured to the first connector, the electrical connector comprising a first electrical connector and a second electrical connector disposed adjacent to the first electrical connector, the vibration system comprising a first voice coil and a second voice coil disposed in spaced relation to the first voice coil, the first voice coil portion extending into the first magnetic circuit, the second voice coil portion extending into the second magnetic circuit, the first voice coil and the second voice coil being electrically connected to an external circuit via the first electrical connector and the second electrical connector.
9. The speaker of claim 8, wherein the electrical connector comprises a first fixed portion electrically connected to the first voice coil, a second fixed portion electrically connected to the second voice coil, a third fixed portion electrically connected to an external circuit, and a third connecting portion connecting the first fixed portion, the second fixed portion, and the third fixed portion.
10. The speaker of claim 5, wherein the frame further comprises a first protrusion extending into the first receiving space and a second protrusion extending into the second receiving space, the first protrusion being secured to the first support ring and the second protrusion being secured to the second support ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410712018.8A CN118283505A (en) | 2024-06-04 | 2024-06-04 | Loudspeaker with multiple magnetic circuit structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410712018.8A CN118283505A (en) | 2024-06-04 | 2024-06-04 | Loudspeaker with multiple magnetic circuit structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118283505A true CN118283505A (en) | 2024-07-02 |
Family
ID=91637332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410712018.8A Pending CN118283505A (en) | 2024-06-04 | 2024-06-04 | Loudspeaker with multiple magnetic circuit structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118283505A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201550272U (en) * | 2009-09-30 | 2010-08-11 | 无锡杰夫电声有限公司 | Double-drive loudspeaker |
| CN201708916U (en) * | 2009-11-20 | 2011-01-12 | 天津中环真美声学技术有限公司 | Ultrathin double-drive loudspeaker |
| CN203912186U (en) * | 2014-06-16 | 2014-10-29 | 苏州东立电子有限公司 | Single-diaphragm double-magnetic-circuit loudspeaker |
| JP2015046727A (en) * | 2013-08-28 | 2015-03-12 | 並木精密宝石株式会社 | Improvement method of vibration characteristics in multifunctional vibration actuator |
| CN216362355U (en) * | 2021-11-10 | 2022-04-22 | 瑞声光电科技(常州)有限公司 | Speaker and electronic equipment |
| CN114727204A (en) * | 2022-04-29 | 2022-07-08 | 歌尔股份有限公司 | Sound production vibration device and electronic equipment |
| CN114745643A (en) * | 2022-04-29 | 2022-07-12 | 歌尔股份有限公司 | Sound production vibration device and electronic equipment |
| CN115696147A (en) * | 2022-07-13 | 2023-02-03 | 深圳立讯电声科技有限公司 | Loudspeaker device |
| CN117560608A (en) * | 2024-01-09 | 2024-02-13 | 瑞声光电科技(常州)有限公司 | Speaker and speaker box |
-
2024
- 2024-06-04 CN CN202410712018.8A patent/CN118283505A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201550272U (en) * | 2009-09-30 | 2010-08-11 | 无锡杰夫电声有限公司 | Double-drive loudspeaker |
| CN201708916U (en) * | 2009-11-20 | 2011-01-12 | 天津中环真美声学技术有限公司 | Ultrathin double-drive loudspeaker |
| JP2015046727A (en) * | 2013-08-28 | 2015-03-12 | 並木精密宝石株式会社 | Improvement method of vibration characteristics in multifunctional vibration actuator |
| CN203912186U (en) * | 2014-06-16 | 2014-10-29 | 苏州东立电子有限公司 | Single-diaphragm double-magnetic-circuit loudspeaker |
| CN216362355U (en) * | 2021-11-10 | 2022-04-22 | 瑞声光电科技(常州)有限公司 | Speaker and electronic equipment |
| CN114727204A (en) * | 2022-04-29 | 2022-07-08 | 歌尔股份有限公司 | Sound production vibration device and electronic equipment |
| CN114745643A (en) * | 2022-04-29 | 2022-07-12 | 歌尔股份有限公司 | Sound production vibration device and electronic equipment |
| CN115696147A (en) * | 2022-07-13 | 2023-02-03 | 深圳立讯电声科技有限公司 | Loudspeaker device |
| CN117560608A (en) * | 2024-01-09 | 2024-02-13 | 瑞声光电科技(常州)有限公司 | Speaker and speaker box |
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