CN110381399B - Loudspeaker box - Google Patents
Loudspeaker box Download PDFInfo
- Publication number
- CN110381399B CN110381399B CN201910672496.XA CN201910672496A CN110381399B CN 110381399 B CN110381399 B CN 110381399B CN 201910672496 A CN201910672496 A CN 201910672496A CN 110381399 B CN110381399 B CN 110381399B
- Authority
- CN
- China
- Prior art keywords
- wall
- cavity
- hole
- upper cover
- loudspeaker
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000003292 glue Substances 0.000 claims abstract description 6
- 239000000178 monomer Substances 0.000 claims abstract 11
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 abstract description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- -1 Polyethylene terephthalate Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/32—Constructional details
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
-
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides a loudspeaker box which comprises an upper cover, a lower cover and a sounding monomer, wherein the lower cover and the upper cover are enclosed to form an accommodating space, the sounding monomer is accommodated in the accommodating space, the lower cover comprises a top wall, a side wall and a supporting wall, the supporting wall is arranged around the sounding monomer in a surrounding mode, the sounding monomer divides the accommodating space into a front cavity and a rear cavity, a sound outlet hole is formed in the side wall, the lower cover further comprises a surrounding wall, the loudspeaker box further comprises a sealing component which is arranged on the surrounding wall in a covering mode, the surrounding wall, the supporting wall and the sealing component are enclosed to form a resonant cavity, a through hole is formed in the supporting wall, the resonant cavity is communicated with the front cavity through the through hole, the sealing component comprises a cover plate fixed on the surrounding wall and a ventilating partition piece arranged on the cover plate, the ventilating partition piece is fixedly bonded through a glue layer. In the invention, the resonant cavity increases the cavity volume of the front cavity, the high-frequency acoustic performance is improved, and the air pressure in the loudspeaker box can be balanced by the leakage hole on the sealing component.
Description
Technical Field
The invention belongs to the technical field of electroacoustic, and particularly relates to a loudspeaker box.
Background
With the rapid development of science and technology, audio equipment is also rapidly developed, people have higher and higher requirements on the functionality of the audio equipment, and more people have higher requirements on the audio performance of the speaker box. In the correlation technique, the space of front cavity only contains the free just right region of sound production and leads the sound passageway region, and is comparatively single for thereby the high frequency response is too high and sound quality not good condition such as sound ear-piercing, lip tooth sound are sharp-pointed appears, perhaps resonant frequency falls on piano sound sensitive frequency channel and leads to piano sound tone quality not good.
Disclosure of Invention
The invention aims to solve the technical problem of providing a loudspeaker box, and aims to solve the problems that the loudspeaker box in the prior art is sharp in high-frequency tone quality and poor in lip-tooth tone quality and piano tone quality.
The first aspect of the embodiment of the present invention provides a speaker box, which includes an upper cover, a lower cover enclosing with the upper cover to form an accommodating space, and a sound generating unit accommodated in the accommodating space, wherein the lower cover includes a top wall, a side wall extending from the periphery of the top wall toward the upper cover and enclosing with the upper cover to be fixed, and a supporting wall extending from the top wall toward the upper cover direction into the accommodating space and fixing the sound generating unit, the supporting wall is enclosed around the sound generating unit, the sound generating unit divides the accommodating space into a front cavity and a rear cavity, the top wall, the supporting wall and the sound generating unit enclose to form the front cavity, the side wall is provided with a sound outlet hole communicated with the front cavity, the lower cover further includes a peripheral wall extending from the top wall toward the upper cover direction into the rear cavity, the speaker box further includes a sealing component covering one end of the peripheral wall far away from the top wall, the leg with support the wall connection, the leg support the wall and seal assembly surrounds formation resonant cavity, the via hole has been seted up to the support wall, the resonant cavity warp the via hole with preceding chamber intercommunication, seal assembly is including fixing the apron of leg and setting are in the ventilative separator of apron top, ventilative separator with it is fixed to bond through the glue film between the apron, seal assembly sets up and runs through in proper order the apron reaches the hole that leaks of glue film, the hole warp that leaks ventilative separator with back chamber intercommunication.
Further, the through hole is opposite to the sound outlet hole.
Further, the supporting wall comprises an upper end face facing the upper cover, and an inner wall face and an outer wall face, wherein the two sides of the upper end face respectively extend to the top wall, the inner wall face is located on one side, close to the front cavity, of the supporting wall, the outer wall face is located on one side, close to the rear cavity, of the supporting wall, the upper end face is recessed towards the top wall to form a first groove, the first groove extends to the inner wall face, the first groove is arranged along the circumferential direction of the inner ring of the supporting wall, and the sounding unit is fixed on the first groove.
Furthermore, the surrounding wall comprises an upper surface facing the upper cover and an inner side surface extending from one side, close to the resonant cavity, of the upper surface to the top wall, a second groove is formed in the upper surface in a recessed mode towards the top wall, the second groove extends to the inner side surface, the second groove is arranged along the circumferential direction of the surrounding wall, and the sealing assembly is fixed to the second groove.
Further, the first groove and the second groove are communicated with each other.
Further, the leakage hole is opened at the center of the cover plate.
Further, the glue layer is a double-sided adhesive tape.
Further, the sealing assembly is integrally processed by die cutting.
Compared with the prior art, the invention has the beneficial effects that: the resonant cavity communicated with the front cavity is formed between the upper cover and the lower cover of the loudspeaker box, the resonant cavity is sealed by the sealing component, the cavity volume of the front cavity can be effectively increased, the high-frequency acoustic performance is improved, the Q value (quality factor value) and the sensitivity of a high-frequency resonance peak of the loudspeaker box are reduced, the acoustic performance of the loudspeaker box is better, and the air pressure in the loudspeaker box can be balanced due to the fact that the sealing component is provided with the leakage hole, and the leakage hole is communicated with the rear cavity through the ventilation isolating piece.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a speaker box provided in an embodiment of the present invention;
fig. 2 is an exploded view of a speaker box according to an embodiment of the present invention;
FIG. 3 is a schematic view in section taken along the plane A-A of FIG. 1;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
fig. 5 is a schematic view of the overall structure of the lower cover according to the embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
As shown in fig. 1 to 3, a speaker box according to an embodiment of the present invention includes an upper cover 1, a lower cover 3 enclosing with the upper cover 1 to form an accommodating space 5, and a sound generating unit 2 accommodated in the accommodating space 5, where the lower cover 3 includes a top wall 32, a side wall 35 extending from a periphery of the top wall 32 to the upper cover 1 and enclosing and fixing with the upper cover 1, and a supporting wall 33 extending from the top wall 32 toward the upper cover 1 to the accommodating space 5 and fixing the sound generating unit 2, the supporting wall 33 is enclosed around the sound generating unit 2, the sound generating unit 2 divides the accommodating space 5 into a front cavity 51 and a rear cavity 52, the top wall 32, the supporting wall 33, and the sound generating unit 2 enclose to form a front cavity 51, and the rear cavity 52 can be used to improve acoustic performance of the speaker box.
In the above embodiment, as shown in fig. 2 and fig. 3, a sound outlet 31 communicating with the front cavity 51 is formed on one side of the lower cover 3, the lower cover 3 further includes a surrounding wall 34 extending from the top wall 32 to the upper cover 1 to the rear cavity 52, the speaker box further includes a sealing element 4 covering one end of the surrounding wall 34 far from the top wall 32, the surrounding wall 34 is connected to the supporting wall 33, the surrounding wall 34, the supporting wall 33 and the sealing element 4 surround to form a resonant cavity 53, the supporting wall 33 is formed with a via 335, and the resonant cavity 53 communicates with the front cavity 51 through the via 335.
Specifically, the via hole 335 is opposite to the sound outlet hole 31, and the resonant cavity 53 is communicated with the front cavity 51 only through the via hole 335, so that the cavity volume of the front cavity 51 can be effectively increased, the high-frequency acoustic performance is improved, and the Q value (quality factor value) and the sensitivity of the high-frequency resonance peak of the loudspeaker box are reduced, so that the acoustic performance of the loudspeaker box is better, and the structural design of the enclosure wall 34 can be more diversified, thereby enlarging the application range. In addition, the resonant cavity 53 does not occupy the height space of the speaker box, so that the speaker box as a whole is light and thin. In other embodiments, the resonant cavity 53 may be disposed on the other two sides of the sound generating unit 2 not facing the sound generating hole 31, which is not limited in this embodiment as long as the resonant cavity 53 can communicate with the front cavity 51.
In the above embodiment, as shown in fig. 5, the supporting wall 33 includes an upper end surface 331 facing the upper cover 1, and an inner wall surface 332 and an outer wall surface 334 extending from two sides of the upper end surface 331 to the top wall 32, respectively, the inner wall surface 332 is located on one side of the supporting wall 33 close to the front cavity 51, the outer wall surface 334 is located on one side of the supporting wall 33 close to the rear cavity 52, the upper end surface 331 is recessed towards the top wall 32 to form a first groove 333, the first groove 333 extends to the inner wall surface 332, the first groove 333 is arranged along the circumferential direction of the inner ring of the supporting wall 33, and the sound-generating unit 2 is fixed on the first groove 333, so that the fixing of the sound-generating unit 2 is firm.
In addition, as shown in fig. 4 and 5, the surrounding wall 34 includes an upper surface 341 facing the upper cover 1 and an inner side surface 342 extending from a side of the upper surface 341 close to the resonant cavity 53 to the top wall, the upper surface 341 is recessed toward the top wall 32 to form a second groove 343, the second groove 343 extends to the inner side surface 342, the second groove 343 is disposed along the circumferential direction of the surrounding wall 34, and the seal assembly 4 is fixed to the second groove 343. The sealing assembly 4 and the second groove 343 can be fixed by gluing, so that the sealing assembly 4 and the second groove 343 are fixed more firmly. In addition, the second groove 343 and the first groove 333 communicate with each other.
In the above embodiment, the sealing assembly 4 includes the cover plate 41 fixed to the surrounding wall 34 and the air-permeable partition 43 disposed above the cover plate 41, the air-permeable partition 43 and the cover plate 41 are bonded and fixed by the adhesive layer 42, the sealing assembly 4 is provided with the leakage hole 411 sequentially penetrating through the cover plate 41 and the adhesive layer 42, and the leakage hole 411 is communicated with the rear cavity 52 through the air-permeable partition 43. The resonance chamber 53 communicates with the rear chamber 52 through the leakage hole 411 of the sealing member 4, thereby making it possible to balance the air pressure inside the speaker box. In the present embodiment, the leakage hole 411 is opened at a central position of the cover plate 41. Optionally, the adhesive layer 42 is a double-sided adhesive tape, so that the air-permeable spacer 43 is more firmly bonded to the cover plate 41. In addition, the sealing assembly 4 is integrally processed by die cutting, so that the sealing assembly 4 is not easily separated and falls off when being fixed on the second groove 343. The cover plate 41 is made of PET (Polyethylene terephthalate) material, is easy to process, and can effectively reduce the resonance peak of the resonant cavity, so that the high-frequency acoustic performance is better. The breathable isolation member 43 is mesh fabric (an auxiliary material woven by using polyester and terylene as raw materials), and can realize the adjustment of the damping between the resonant cavity 53 and the rear cavity 52 by changing the density degree of the mesh fabric.
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 loudspeaker, comprising: the loudspeaker box comprises an upper cover, a lower cover and a sounding monomer, wherein the lower cover and the upper cover are enclosed to form an accommodating space, the sounding monomer is accommodated in the accommodating space, the lower cover comprises a top wall, a side wall and a supporting wall, the side wall extends from the periphery of the top wall to the upper cover and is fixedly enclosed by the upper cover, the supporting wall extends from the top wall to the direction of the upper cover to the accommodating space and is used for fixing the sounding monomer, the supporting wall is enclosed by the supporting wall and is arranged around the sounding monomer, the accommodating space is divided into a front cavity and a rear cavity by the sounding monomer, the top wall, the supporting wall and the sounding monomer are enclosed to form the front cavity, the loudspeaker box is characterized in that the side wall is provided with a sounding hole communicated with the front cavity, the lower cover further comprises a peripheral wall, the peripheral wall extends to the direction of the upper cover to the rear cavity, and the loudspeaker box further comprises a sealing component, the enclosure wall with support the wall connection, the enclosure wall support the wall and seal assembly surrounds and forms the resonant cavity, the via hole has been seted up to the support wall, the resonant cavity warp the via hole with preceding chamber intercommunication, seal assembly is including fixing the apron of enclosure wall and setting are in the ventilative separator of apron top, ventilative separator with it is fixed to bond through the glue film between the apron, seal assembly sets up and runs through in proper order the apron reaches the hole of revealing of glue film, the hole of revealing warp ventilative separator with back chamber intercommunication, reveal the hole and lie in the sound production monomer is kept away from go out sound hole one side.
2. The speaker of claim 1, wherein the via is directly opposite the sound outlet hole.
3. The loudspeaker according to claim 1, wherein the support wall includes an upper end surface facing the upper cover, and an inner wall surface and an outer wall surface extending from both sides of the upper end surface to the top wall, respectively, the inner wall surface is located on a side of the support wall close to the front cavity, the outer wall surface is located on a side of the support wall close to the rear cavity, the upper end surface is recessed toward the top wall to form a first groove, the first groove extends to the inner wall surface, the first groove is circumferentially arranged along an inner ring of the support wall, and the sound generating unit is fixed on the first groove.
4. A loudspeaker according to claim 3, wherein the enclosure wall includes an upper surface facing the upper cover and an inner side surface extending from a side of the upper surface adjacent to the resonant cavity, the upper surface being recessed in the direction of the top wall to form a second recess, the second recess extending to the inner side surface, the second recess being disposed along the circumference of the enclosure wall, and the sealing member being fixed to the second recess.
5. The loudspeaker of claim 4, wherein the first recess and the second recess communicate with each other.
6. The speaker of claim 1, wherein the leakage hole is opened at a central position of the cover plate.
7. The loudspeaker of claim 6, wherein the adhesive layer is a double-sided adhesive.
8. The loudspeaker of claim 7, wherein the sealing assembly is integrally formed by die cutting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/093998 WO2021000101A1 (en) | 2019-06-29 | 2019-06-29 | Loudspeaker box |
| CNPCT/CN2019/093998 | 2019-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110381399A CN110381399A (en) | 2019-10-25 |
| CN110381399B true CN110381399B (en) | 2021-03-23 |
Family
ID=68255634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910672496.XA Expired - Fee Related CN110381399B (en) | 2019-06-29 | 2019-07-24 | Loudspeaker box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110381399B (en) |
| WO (1) | WO2021000101A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037904A (en) * | 2019-12-25 | 2021-06-25 | 华为技术有限公司 | Speaker module and electronic equipment |
| CN111131942A (en) * | 2019-12-31 | 2020-05-08 | 歌尔科技有限公司 | Sound production device and electronic equipment |
| CN113645535B (en) * | 2020-04-27 | 2022-09-09 | 华为技术有限公司 | Mobile terminal |
| CN112153501B (en) * | 2020-08-27 | 2024-04-02 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker box |
| CN112468906B (en) * | 2020-12-18 | 2022-05-03 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker box and assembling process thereof |
| CN114801343A (en) * | 2021-01-28 | 2022-07-29 | 镇江贝斯特新材料有限公司 | Acoustic enhancement material block and application thereof, micro loudspeaker and application thereof |
| EP4282641A1 (en) * | 2021-01-28 | 2023-11-29 | SSI New Material (Zhenjiang) Co., Ltd. | Acoustic reinforcing material block and application thereof, micro loudspeaker and electronic device |
| CN113055513A (en) * | 2021-03-04 | 2021-06-29 | 青岛海信移动通信技术股份有限公司 | Mobile phone and loudspeaker box for electronic equipment |
| CN113438573B (en) * | 2021-07-19 | 2022-11-01 | 歌尔科技有限公司 | Loudspeaker and sound production device |
| CN113676569A (en) * | 2021-08-02 | 2021-11-19 | 维沃移动通信有限公司 | Sound production assembly and electronic equipment |
| CN113993033B (en) * | 2021-10-13 | 2024-02-06 | 维沃移动通信有限公司 | Electronic equipment, audio adjusting method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108055601A (en) * | 2017-11-20 | 2018-05-18 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN108989944A (en) * | 2018-08-03 | 2018-12-11 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| CN208479940U (en) * | 2018-01-26 | 2019-02-05 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| CN208638625U (en) * | 2018-08-02 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN109788413A (en) * | 2018-12-31 | 2019-05-21 | 瑞声声学科技(深圳)有限公司 | Loudspeaker enclosure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1892191B1 (en) * | 2005-05-17 | 2010-01-06 | Toyo Seikan Kaisha, Ltd. | Square can and method and device for double-seaming the same |
| CN104902401B (en) * | 2015-03-31 | 2018-09-07 | 歌尔股份有限公司 | Acoustical generator module |
| CN106101955B (en) * | 2016-07-20 | 2019-10-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN109218897A (en) * | 2018-08-09 | 2019-01-15 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
-
2019
- 2019-06-29 WO PCT/CN2019/093998 patent/WO2021000101A1/en active Application Filing
- 2019-07-24 CN CN201910672496.XA patent/CN110381399B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108055601A (en) * | 2017-11-20 | 2018-05-18 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN208479940U (en) * | 2018-01-26 | 2019-02-05 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| CN208638625U (en) * | 2018-08-02 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN108989944A (en) * | 2018-08-03 | 2018-12-11 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| CN109788413A (en) * | 2018-12-31 | 2019-05-21 | 瑞声声学科技(深圳)有限公司 | Loudspeaker enclosure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021000101A1 (en) | 2021-01-07 |
| CN110381399A (en) | 2019-10-25 |
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