CN112073854B - Sounding device - Google Patents
Sounding device Download PDFInfo
- Publication number
- CN112073854B CN112073854B CN202010880937.8A CN202010880937A CN112073854B CN 112073854 B CN112073854 B CN 112073854B CN 202010880937 A CN202010880937 A CN 202010880937A CN 112073854 B CN112073854 B CN 112073854B
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- CN
- China
- Prior art keywords
- sound
- base
- rear shell
- face
- sounding
- 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.)
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- 239000000178 monomer Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000009423 ventilation Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000011358 absorbing material Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007769 metal material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000005236 sound signal 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides a sounding device, which comprises a shell with an accommodating space and a sounding monomer accommodated in the accommodating space, wherein the sounding monomer comprises a vibrating diaphragm for vibrating and sounding; the base comprises a base plate fixed on one side of the sounding monomer, which is far away from the rear shell, a base extension wall, an auxiliary extension wall and a flange edge, wherein the base extension wall is bent and extended from the outer periphery of the base plate to the rear shell direction; the sounding device also comprises a ring-shaped bracket accommodated in the accommodating space, the bracket is wound and fixed on the periphery of the sounding monomer to form a seal, and the bracket is made of plastic materials and is abutted and fixed on the base; the rear shell, the base, the bracket and the sounding monomer jointly enclose a rear sound cavity. Compared with the related art, the sound generating device has good reliability.
Description
[ Field of technology ]
The invention relates to the field of electroacoustic conversion, in particular to a sounding device applied to a portable mobile electronic product.
[ Background Art ]
The sound generating device is also called a loudspeaker, is widely applied to portable mobile electronic products, such as mobile phones, and can convert audio signals into sound for playing, and the sound generating device has high loudness and amplitude.
The sounding device of the related art comprises a sounding monomer used for sounding, a base and a rear shell, wherein the base and the rear shell are respectively arranged on two opposite sides of the sounding monomer in a covering mode, and the base and the rear shell are formed by injection molding and are fixed through ultrasonic welding.
However, the base and the rear case of the related art sound emitting device require more space for fixing by ultrasonic welding, which limits the space size of the internal cavity of the sound emitting device.
Therefore, it is necessary to provide a new sound emitting device to solve the above-mentioned technical problems.
[ Invention ]
The invention aims to provide a sound generating device with high space utilization rate and better reliability.
In order to achieve the above-mentioned purpose, the present invention provides a sound generating device, which includes a housing having a receiving space and a sound generating unit received in the receiving space, wherein the sound generating unit includes a vibrating diaphragm for vibrating sound, the housing is made of a metal material, and includes a base and a rear housing respectively covering opposite sides of the sound generating unit along a vibrating direction of the vibrating diaphragm;
The base comprises a base plate which is positioned on one side of the sounding monomer, far away from the rear shell, in a ring shape, a base extension wall which is bent and extended from the outer periphery of the base plate to the direction of the rear shell, a secondary extension wall which is bent and extended from the inner periphery of the base plate to the direction far away from the rear shell, and a flange edge which is bent and extended from one end of the secondary extension wall, far away from the base plate, to the direction close to the sounding monomer, wherein one side of the sounding monomer, which is provided with the vibrating diaphragm, is abutted to the flange edge and is at least partially welded and fixed with the flange edge;
the sound generating device further comprises a ring-shaped bracket accommodated in the accommodating space, the bracket is fixedly arranged on the periphery of the sound generating unit in a surrounding manner and forms a seal, and the bracket is made of plastic materials and is fixedly connected with the base in an abutting manner;
the rear shell, the base, the bracket and the sounding monomer jointly enclose a rear sound cavity.
Preferably, the back shell comprises a back shell plate positioned at one side of the sounding unit away from the base and spaced from the sounding unit, and a back shell extending wall bent and extended from the periphery of the back shell plate to the direction of the base, and the back shell extending wall is abutted to the base extending wall and welded and fixed with the base extending wall.
Preferably, the sound generating device further comprises a ventilation isolation piece located in the rear sound cavity, the ventilation isolation piece is fixed to the support, and the ventilation isolation piece divides the rear sound cavity into an inner sound cavity located on one side, close to the sound generating unit, of the ventilation isolation piece and a sound absorbing cavity arranged at intervals with the sound generating unit.
Preferably, the ventilation separator comprises a separator body arranged opposite to the back shell plate at intervals, a separator extension part bent and extended from the periphery of the separator body to the bracket, and a separator fixing part bent and extended from one end of the separator extension part far away from the separator body; the air-permeable partition piece, the rear shell, the base and the support jointly enclose the sound-absorbing cavity for accommodating sound-absorbing materials.
Preferably, the sounding unit further comprises a metal basin frame for fixing the vibrating diaphragm, and the support is arranged around the outer peripheral side of the metal basin frame and is fixedly sealed with the metal basin frame.
Preferably, the support comprises a first surface and a second surface which are parallel to the vibrating direction of the vibrating diaphragm and are oppositely arranged, the first surface is fixedly connected with the metal basin frame, and the second surface is arranged at intervals with the base extension wall.
Preferably, the bracket further includes a third surface connecting the first surface and the second surface, a fourth surface connected to the second surface and spaced apart from the third surface, and a fifth surface extending obliquely from the first surface to the fourth surface; the breathable spacer is fixed to the third face, and the base plate is fixed to the fourth face.
Preferably, the sound generating device further comprises a conductive piece for connecting the sound generating unit with external electrical signals, wherein the conductive piece comprises a conductive piece body, a connecting arm and an extension arm, the conductive piece body is supported and fixed at one end of the support, which is close to the rear shell, the connecting arm extends from two ends of the conductive piece body to the direction of the sound generating unit and is fixedly and electrically connected with the sound generating unit, and the extension arm extends from the conductive piece body to the direction far away from the sound generating unit and penetrates through the shell; the support is close to one side of the backshell is sunken to form the accommodating groove, the conducting piece body set up in the accommodating groove and make the conducting piece body with the support is close to one side parallel and level of backshell, the setting of isolation spare fixed part is pressed simultaneously and is fixed in the conducting piece body with the support.
Preferably, the sound generating device further comprises a sealing ring attached to one side, far away from the sound generating unit, of the flange edge.
Preferably, the sealing ring is made of double faced adhesive tape.
Compared with the related art, the sounding device comprises a shell with an accommodating space and sounding monomers accommodated in the accommodating space, wherein the shell is designed to be a base and a rear shell which are respectively covered on two opposite sides of the sounding monomers, a bracket is additionally arranged for fixing the sounding monomers, meanwhile, the bracket and the base are fixed, the rear shell, the base, the bracket and the sounding monomers jointly enclose a rear sound cavity, the bracket is made of plastic materials, and the shell is made of metal materials; under the condition of not increasing the external dimension, the space of the rear acoustic cavity is increased, so that the acoustic effect of the sounding device is better; in addition, the flange limit with the sound production monomer carries out local welding in order to follow to the sound production monomer the vibrating diaphragm vibration direction is spacing, and the reliability is better.
[ Description of the 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 sound emitting device of the present invention;
FIG. 2 is a partially exploded perspective view of a sound emitting device of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
Fig. 4 is an enlarged schematic view of B in fig. 3.
[ Detailed description ] of the invention
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.
Referring to fig. 1-4, the present invention provides a sound generating device 100, which includes a housing 1 having a receiving space 10, a sound generating unit 2 received in the receiving space 10, a bracket 3, a ventilation spacer 4, a conductive member 5, and a sealing ring 6.
The sounding unit 2 includes a metal frame 22 and a vibrating diaphragm 21 fixed on the metal frame 22 for vibrating and sounding, and of course, the frame may be made of other materials.
Specifically, the casing 1 includes a base 11 and a rear casing 12, the base 11 and the rear casing 12 are respectively covered on two opposite sides of the sounding unit 2 along the vibration direction of the vibrating diaphragm 21, the base 11 and the rear casing 12 are respectively covered on two opposite sides of the metal basin frame 22 along the vibration direction of the vibrating diaphragm 21 in this embodiment, and the base 11 and the rear casing 12 are made of metal materials, so that the whole casing 1 is thinned, and the size of the accommodating space 10 is further increased.
The base 11 comprises a base plate 111 which is located at one side of the sounding unit 2 far away from the rear shell 12 and is ring-shaped, a base extension wall 112 which is bent and extended from the outer periphery of the base plate 111 to the direction of the rear shell 12, a secondary extension wall 113 which is bent and extended from the inner periphery of the base plate 111 to the direction far away from the rear shell 12, and a flange 114 which is bent and extended from one end of the secondary extension wall 113 far away from the base plate 111 to the direction close to the sounding unit 2, wherein one side of the sounding unit 2 provided with the vibrating diaphragm 21 is abutted to the flange 114 and is at least partially welded and fixed with the flange 114, and the vibrating diaphragm 21 is exposed on the flange 114 to sound.
The rear shell 12 comprises a rear shell plate 121 which is positioned on one side of the sounding unit 2 away from the base 11 and is spaced from the sounding unit 2, and a rear shell extension wall 122 which is bent and extended from the periphery of the rear shell plate 121 towards the base 11. Specifically, the extending direction of the rear casing extending wall 122 is parallel to the vibrating direction of the vibrating diaphragm 21, the extending direction of the base extending wall 112 is parallel to the vibrating direction of the vibrating diaphragm 21, and the rear casing extending wall 122 abuts against the base extending wall 112 and is welded and fixed with the base extending wall 112, so that the reliability is better.
The bracket 3 is annular and is accommodated in the accommodating space and is fixed around the circumference of the metal basin frame 22 to form a seal, and the bracket 3 is fixed to one side of the base plate 111, which is close to the rear shell 12, in an abutting manner and is arranged at intervals with the rear shell extension wall 112.
Specifically, the support 3 is made of plastic material, the support 3 includes a first surface 31 and a second surface 32 that are parallel to the vibration direction of the diaphragm 21 and are disposed opposite to each other, the first surface 31 is fixedly connected to the metal basin frame 22, and the second surface 32 is disposed at intervals from the base extension wall 112; the bracket 3 further includes a third surface 33 connecting the first surface 31 and the second surface 32, a fourth surface 34 connected to the second surface 32 and spaced apart from the third surface 33, and a fifth surface 35 extending obliquely from the first surface 31 to the fourth surface 34; the air-permeable separator 4 is fixed to the third surface 33, and the base plate 111 is fixed to the fourth surface 35. That is, by providing the bracket 3, the reliability of the sounding single body 2 is increased, the raw materials are fewer, the cost is reduced, and the internal space of the sounding device 100 is increased.
In this embodiment, the rear shell 12, the base 11, the bracket 3, and the sounding unit 2 together define a rear acoustic cavity 20. The sound generating device 100 of the present invention forms a relatively closed rear acoustic cavity structure, which has a simple structure, and improves the acoustic performance, particularly the low-frequency acoustic performance, of the sound generating device 100.
The ventilation spacer 4 is located in the rear acoustic cavity 20 and is fixed on the support 3, and the ventilation spacer 4 separates the rear acoustic cavity 20 into an inner acoustic cavity 30a located on one side of the ventilation spacer 4, which is close to the sounding unit 2, and an acoustic cavity 30 arranged at intervals with the sounding unit 2.
Specifically, the ventilation separator 4 includes a separator body 41 disposed opposite to the back shell plate 121 at a distance, a separator extension 42 extending from the periphery of the separator body 41 to the bracket 3, and a separator fixing portion 43 extending from one end of the separator extension 42 away from the separator body 41; the spacer extension 42 is spaced from the rear case extension wall 122, the spacer fixing portion 43 is fixed to the bracket, and the air-permeable spacer 4, the rear case 12, the base 11, and the bracket 3 together define a sound absorbing cavity 30 for accommodating a sound absorbing material.
The sealing ring 6 is attached to one side of the base plate 111, which is far away from the sounding monomer 2, and the sounding device 100 is assembled and sealed with the whole machine through the sealing ring 6; of course, as shown in fig. 3, the sealing ring 6 may also be attached to a side of the flange 114 away from the sounding unit 2, and the sounding device 100 is assembled and sealed with the whole machine through the sealing ring 6; specifically, the sealing ring 6 is made of double faced adhesive tape.
The shell 1 comprises a gap 13a penetrating through the shell, the sounding device 100 further comprises a conductive piece 5 for connecting the sounding single body 2 with external electric signals, the conductive piece 5 comprises a conductive piece body 51 supported and fixed on one end of the support 3 close to the rear shell 12, a connecting arm 52 extending from two ends of the conductive piece body 51 to the sounding single body 2 and fixedly and electrically connected with the sounding single body 2, and an extension arm 53 extending from the conductive piece body 51 to the direction far away from the sounding single body 2 and passing through the gap 13 a; the support 3 is recessed near one side of the rear shell to form a containing groove 3a, the conductive piece body 51 is arranged in the containing groove 3a and enables the conductive piece body 51 to be flush with one side of the support 3 near the rear shell 12, and the spacer fixing part 43 is simultaneously pressed and fixed on the conductive piece body 51 and the support 3.
Compared with the related art, the sounding device comprises a shell with an accommodating space and sounding monomers accommodated in the accommodating space, wherein the shell is designed to be a base and a rear shell which are respectively covered on two opposite sides of the sounding monomers, a bracket is additionally arranged for fixing the sounding monomers, meanwhile, the bracket and the base are fixed, the rear shell, the base, the bracket and the sounding monomers jointly enclose a rear sound cavity, the bracket is made of plastic materials, and the shell is made of metal materials; under the condition of not increasing the external dimension, the space of the rear acoustic cavity is increased, so that the acoustic effect of the sounding device is better; in addition, the flange limit with the sound production monomer carries out local welding in order to follow to the sound production monomer the vibrating diaphragm vibration direction is spacing, and the reliability is better.
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 (6)
1. The sound production device comprises a shell with an accommodating space and a sound production monomer accommodated in the accommodating space, wherein the sound production monomer comprises a vibrating diaphragm for vibrating and producing sound;
The base comprises a base plate which is positioned on one side of the sounding monomer, far away from the rear shell, in a ring shape, a base extension wall which is bent and extended from the outer periphery of the base plate to the direction of the rear shell, a secondary extension wall which is bent and extended from the inner periphery of the base plate to the direction far away from the rear shell, and a flange edge which is bent and extended from one end of the secondary extension wall, far away from the base plate, to the direction close to the sounding monomer, wherein one side of the sounding monomer, which is provided with the vibrating diaphragm, is abutted to the flange edge and is at least partially welded and fixed with the flange edge;
the sound generating device further comprises a ring-shaped bracket accommodated in the accommodating space, the bracket is fixedly arranged on the periphery of the sound generating unit in a surrounding manner and forms a seal, and the bracket is made of plastic materials and is fixedly connected with the base in an abutting manner;
the rear shell, the base, the bracket and the sounding monomer jointly enclose a rear sound cavity;
The rear shell comprises a rear shell plate and a rear shell extending wall, the rear shell plate is positioned on one side, far away from the base, of the sounding monomer and is spaced from the sounding monomer, the rear shell extending wall is bent and extended from the periphery of the rear shell plate to the direction of the base, and the rear shell extending wall is abutted to the base extending wall and welded and fixed with the base extending wall;
the sound generating device further comprises a ventilation isolation piece positioned in the rear sound cavity, the ventilation isolation piece is fixed on the support, and the ventilation isolation piece divides the rear sound cavity into an inner sound cavity positioned at one side of the ventilation isolation piece close to the sound generating single body and a sound absorbing cavity arranged at intervals with the sound generating single body;
The sounding unit further comprises a metal basin frame for fixing the vibrating diaphragm, and the support is arranged around the periphery of the metal basin frame and is fixedly sealed with the metal basin frame;
the support includes and is on a parallel with vibrating diaphragm vibration direction just is relative first face and the second face that sets up, first face with metal basin frame fixed connection, the second face with base extension wall interval sets up.
2. The sound emitting device of claim 1, wherein the air-permeable separator comprises a separator body disposed opposite the back shell plate, a separator extension bent and extended from a periphery of the separator body toward the bracket, and a separator fixing portion bent and extended from an end of the separator extension away from the separator body; the air-permeable partition piece, the rear shell, the base and the support jointly enclose the sound-absorbing cavity for accommodating sound-absorbing materials.
3. The sound emitting device of claim 1, wherein the bracket further comprises a third face connecting the first face and the second face, a fourth face connected to the second face and spaced apart from the third face, and a fifth face extending obliquely from the first face to the fourth face; the breathable spacer is fixed to the third face, and the base plate is fixed to the fourth face.
4. The sound generating device according to claim 2, further comprising a conductive member for connecting the sound generating unit with external electrical signals, wherein the conductive member comprises a conductive member body supported and fixed at one end of the support near the rear shell, connecting arms extending from two ends of the conductive member body to the direction of the sound generating unit and fixedly and electrically connected with the sound generating unit, and extension arms extending from the conductive member body to the direction away from the sound generating unit and penetrating through the shell; the support is close to one side of the backshell is sunken to form the accommodating groove, the conducting piece body set up in the accommodating groove and make the conducting piece body with the support is close to one side parallel and level of backshell, the setting of isolation spare fixed part is pressed simultaneously and is fixed in the conducting piece body with the support.
5. The sound generating device of claim 1, further comprising a sealing ring attached to a side of the flange edge away from the sound generating unit.
6. The sound emitting device of claim 5, wherein the sealing ring is made of double sided tape.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010880937.8A CN112073854B (en) | 2020-08-27 | 2020-08-27 | Sounding device |
| PCT/CN2020/124120 WO2022041456A1 (en) | 2020-08-27 | 2020-10-27 | Sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010880937.8A CN112073854B (en) | 2020-08-27 | 2020-08-27 | Sounding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112073854A CN112073854A (en) | 2020-12-11 |
| CN112073854B true CN112073854B (en) | 2024-07-16 |
Family
ID=73659025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010880937.8A Active CN112073854B (en) | 2020-08-27 | 2020-08-27 | Sounding device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112073854B (en) |
| WO (1) | WO2022041456A1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211321501U (en) * | 2020-01-09 | 2020-08-21 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3607366B2 (en) * | 1995-06-30 | 2005-01-05 | 富士通テン株式会社 | Speaker unit |
| US6568502B2 (en) * | 2001-04-11 | 2003-05-27 | Shih Ming Chang | Sounder, speaker and sound head using the sounder |
| KR20090122404A (en) * | 2002-05-02 | 2009-11-27 | 하만인터내셔날인더스트리스인코포레이티드 | Electro-Dynamic Planar Speakers |
| TW200952505A (en) * | 2008-06-13 | 2009-12-16 | Foxconn Tech Co Ltd | Sound box structure |
| US20140270269A1 (en) * | 2013-03-18 | 2014-09-18 | Hugh C. Hsieh | Loudspeaker device |
| CN207039882U (en) * | 2016-05-18 | 2018-02-23 | 宁波升亚电子有限公司 | Radiator and double suspension side loudspeaker and audio amplifier |
| CN106060753A (en) * | 2016-06-30 | 2016-10-26 | 青岛海信移动通信技术股份有限公司 | Mobile terminal equipment |
| CN205987338U (en) * | 2016-08-04 | 2017-02-22 | 歌尔股份有限公司 | Connection structure of lead wire among sound generating mechanism |
| US10154335B1 (en) * | 2016-09-06 | 2018-12-11 | Minh Dung Hoang | Interchangeable speaker assembly and method of use |
| CN206524955U (en) * | 2017-01-20 | 2017-09-26 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN208094751U (en) * | 2017-03-17 | 2018-11-13 | 宁波升亚电子有限公司 | Loudspeaker arrangement and headphone with loudspeaker arrangement |
| CN110418248B (en) * | 2018-04-28 | 2024-09-13 | 深圳市冠旭电子股份有限公司 | Metal vibrating diaphragm and loudspeaker |
| CN109413542B (en) * | 2018-11-21 | 2024-07-16 | 南京常荣声学股份有限公司 | Low-frequency high-power underwater sound generator |
| CN209964288U (en) * | 2019-04-22 | 2020-01-17 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN110582041B (en) * | 2019-08-14 | 2021-06-15 | 瑞声科技(新加坡)有限公司 | Sounding device and mobile terminal |
| CN211321500U (en) * | 2020-01-09 | 2020-08-21 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN211321488U (en) * | 2020-01-09 | 2020-08-21 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN211128092U (en) * | 2020-01-16 | 2020-07-28 | 百度在线网络技术（北京）有限公司 | Sound box |
| CN111314807A (en) * | 2020-02-19 | 2020-06-19 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
-
2020
- 2020-08-27 CN CN202010880937.8A patent/CN112073854B/en active Active
- 2020-10-27 WO PCT/CN2020/124120 patent/WO2022041456A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211321501U (en) * | 2020-01-09 | 2020-08-21 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112073854A (en) | 2020-12-11 |
| WO2022041456A1 (en) | 2022-03-03 |
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