CN111935567B - Sound production device - Google Patents
Sound production device Download PDFInfo
- Publication number
- CN111935567B CN111935567B CN202010624367.6A CN202010624367A CN111935567B CN 111935567 B CN111935567 B CN 111935567B CN 202010624367 A CN202010624367 A CN 202010624367A CN 111935567 B CN111935567 B CN 111935567B
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- China
- Prior art keywords
- front cover
- sounding
- vibrating diaphragm
- metal front
- metal
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- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 239000002184 metal Substances 0.000 claims abstract description 66
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 239000000178 monomer Substances 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Images
Classifications
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
-
- 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
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides a sounding device which comprises a sounding monomer, wherein the sounding monomer comprises a vibrating diaphragm used for vibrating and sounding, the sounding device also comprises a metal front cover and a sealing layer, the metal front cover is arranged on one side, far away from the sounding monomer, of the vibrating diaphragm in a covering mode, the sealing layer is attached to one side, far away from the vibrating diaphragm, of the metal front cover, the metal front cover and the vibrating diaphragm are separated to form a sounding front cavity, the metal front cover is provided with a sounding hole penetrating through the metal front cover and opposite to the vibrating diaphragm, the sounding hole enables the sounding front cavity to be communicated with the outside, and the sealing layer is completely located within the range of the metal front cover in the orthographic projection of the metal front cover along the vibrating direction of the vibrating diaphragm. Compared with the related art, the sounding device is smaller in size.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a sounding device applied to an electronic sound box product.
[ background of the invention ]
The sound generating device is also called a loudspeaker or a loudspeaker, and is applied to a sound box to convert an audio signal into sound for playing.
The sound production device of the related art includes the sound production monomer, the sound production monomer is including the vibrating diaphragm that is used for the vibration sound production, the sound production device is still including covering and locating the vibrating diaphragm with the vibrating diaphragm encloses into the protecgulum of the preceding chamber of sound production jointly, the protecgulum is equipped with the phonate hole that runs through on it, the phonate hole will chamber and external intercommunication before the sound production.
However, in the sound device of the related art, although the waterproof effect is good, the front cover is made of plastic, and the thickness of the front cover is large, so that the overall size of the sound device is large.
Therefore, there is a need to provide a new sound generation device to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a sounding device with smaller volume.
In order to achieve the purpose, the invention provides a sound production device which comprises a sound production unit, wherein the sound production unit comprises a vibrating diaphragm used for vibrating and producing sound, the sound production device also comprises a metal front cover and a sealing layer, the metal front cover is arranged on one side, far away from the sound production unit, of the vibrating diaphragm, the sealing layer is attached to one side, far away from the vibrating diaphragm, of the metal front cover, the metal front cover and the vibrating diaphragm are separated to form a sound production front cavity, the metal front cover is provided with a sound production hole penetrating through the metal front cover and opposite to the vibrating diaphragm, the sound production front cavity is communicated with the outside through the sound production hole, and the orthographic projection of the sealing layer on the metal front cover along the vibration direction of the vibrating diaphragm is completely located in the range of the metal front cover.
Preferably, the metal front cover comprises a front cover plate and a surrounding wall, the front cover plate is arranged at an interval with the vibrating diaphragm, the surrounding wall is bent and extended in the direction of the vibrating diaphragm by the periphery of the front cover plate, the sound outlet penetrates through the front cover plate, the sealing layer is attached to one side, far away from the surrounding wall, of the front cover plate, and one end, far away from the front cover plate, of the surrounding wall abuts against the vibrating diaphragm.
Preferably, the sound production monomer is still including being used for supporting fixedly the basin frame of vibrating diaphragm, the vibrating diaphragm include vibration portion, by the peripheral outside bending type of vibration portion extends the book ring portion, by book ring portion is kept away from the first fixed part that one side of vibration portion extended and by first fixed part is kept away from book ring portion's one side is followed the second fixed part that the periphery side of basin frame extended, first fixed part clamp is located the leg with between the basin frame, the subsides of second fixed part are located the periphery side of basin frame.
Preferably, the metal protecgulum still include by week side edge of leg the extension wall that the second fixed part extends, the extension wall with the second fixed part interval sets up, just the extension wall with the basin frame encloses into accommodating space jointly, the accomodating space intussuseption is glued and is realized sealedly.
Preferably, the metal front cover further comprises a first fixed edge bent and extended and a second fixed edge bent and extended and a step bent and extended along the direction of the extension wall, wherein the first fixed edge is far away from one end of the extension wall, and the second fixed edge is surrounded to form the step.
Preferably, the sounding device further comprises a breathable isolating piece which is fixed on the metal front cover in a covering mode and jointly encloses into an accommodating cavity, and the sounding unit is accommodated in the accommodating cavity.
Preferably, ventilative separator include with the bottom plate that the protecgulum interval set up, by the periphery of bottom plate to extend the lateral wall that the wall direction was buckled and is extended and by the lateral wall is kept away from the one end of bottom plate is to keeping away from the fixed limit of second that the monomer direction of sound production was buckled and is extended, the metal protecgulum still include by extend the wall and keep away from the one end of leg is to keeping away from the first fixed limit that the monomer direction of sound production was buckled and is extended, first fixed limit with the fixed limit veneer of second is fixed.
Compared with the prior art, the sounding device comprises a metal front cover and a sealing layer, wherein the metal front cover is covered on one side, far away from the sounding monomer, of the vibrating diaphragm, the sealing layer is attached to one side, far away from the vibrating diaphragm, of the metal front cover, the metal front cover and the vibrating diaphragm are separated to form a sounding front cavity, the metal front cover is provided with a sounding hole which penetrates through the metal front cover and is opposite to the vibrating diaphragm, the sounding front cavity is communicated with the outside through the sounding hole, and the orthographic projection of the sealing layer on the metal front cover along the vibration direction of the vibrating diaphragm is completely located in the range of the metal front cover; namely, the front cover is made of metal material; meanwhile, the sealing layer ensures sealing and water proofing, and the orthographic projection of the sealing layer on the metal front cover along the vibration direction of the vibrating diaphragm is completely positioned in the range of the metal front cover; by adopting the structure, the external size of the sounding device is reduced and the volume of the whole sounding device is reduced on the premise of ensuring the sealing and the water resistance of the sounding device.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a sound device and a mobile terminal according to the present invention;
FIG. 2 is an exploded perspective view of a sound device and a mobile terminal according to the present invention;
FIG. 3 is an enlarged view of B in FIG. 2;
FIG. 4 is a sectional view taken along FIG. 1;
FIG. 5 is an enlarged view of C in FIG. 4;
FIG. 6 is a schematic perspective view of another sound generating device and a mobile terminal according to the present invention;
fig. 7 is a cross-sectional view of fig. 6.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a sound generating device 100, which includes a sound generating unit 1, a metal front cover 2 and a sealing layer 4, wherein the sound generating unit 1 includes a vibrating diaphragm 11 for vibrating and generating sound and a frame 12 for supporting and fixing the vibrating diaphragm 11.
The vibrating diaphragm 11 includes vibration portion 111, by the hem portion 112 that the periphery of vibration portion 111 outwards buckles to extend, by hem portion 112 keeps away from first fixed part 113 that one side of vibration portion 111 extended and by first fixed part 113 keeps away from one side of hem portion 113 is followed the second fixed part 114 that the periphery side of basin frame 1 extended, second fixed part 114 pastes and locates the periphery side of basin frame 1, promptly vibrating diaphragm 11 with basin frame 12 adopts the design of borduring. The sealing effect is better.
The metal protecgulum 2 lid is located vibrating diaphragm 11 is kept away from 1 one side of sound production monomer, its with 11 intervals of vibrating diaphragm form sound production ante-chamber 10, metal protecgulum 2 be equipped with run through on it and with the sound outlet 21 that vibrating diaphragm 11 is relative, sound outlet 21 will sound production ante-chamber 10 communicates with the external world. Namely, the front cover is made of metal material, and on the premise of ensuring the sealing and water-proof of the sound-generating device 100, the external dimension is reduced, and the volume of the whole sound-generating device 100 is reduced, as shown in fig. 3, the size of the single side of the metal front cover 2 exceeding the sound-generating unit 1 is a, the a value is 0.2mm, and the a value in the related art is 0.7mm, namely, the external dimension of the invention is 0.5mm smaller than that in the related art under the sealing condition.
Specifically, the metal front cover 2 includes a front cover plate 22 disposed at an interval with the diaphragm 11, a surrounding wall 23 extending from the periphery of the front cover plate 22 to the diaphragm 11 in a bending manner, an extending wall 24 extending from the second fixing portion 114 along the periphery of the surrounding wall 23, a first fixing edge 25 extending from one end of the extending wall 24 away from the surrounding wall 23 in a bending manner towards a direction away from the sound generating unit 1, and a secondary extending wall 26 extending from one end of the extending wall 24 away from the first fixing edge 25 towards a direction away from the extending wall 24 in a bending manner, wherein the secondary extending wall 26 and the first fixing edge 25 enclose to form a step 27. The extending wall 24 and the second fixing portion 114 are arranged at intervals, the extending wall 24 and the basin stand 12 jointly enclose an accommodating space 28, and the accommodating space 28 is filled with glue to realize sealing. The sound outlet 21 penetrates through the front cover 22, one end of the surrounding wall 23, which is far away from the front cover 22, abuts against the periphery of the diaphragm 11, and the first fixing portion 113 is interposed between the surrounding wall 23 and the basin frame 12. When gluing, the step 27 can prevent glue from overflowing, and ensure that the appearance of the sounding device 100 is not affected, i.e. the step 27 is more beneficial to gluing under the condition of ensuring the sealing performance and the appearance of the sounding device 100.
The sealing layer 4 is attached to one side, far away from the vibrating diaphragm 11, of the metal front cover 2, specifically, the sealing layer 4 is attached to one side, far away from the surrounding wall 23, of the front cover plate 22, and the orthographic projection of the sealing layer 4 on the metal front cover 2 along the vibrating direction of the vibrating diaphragm 11 is completely located within the range of the metal front cover 2. The sounder device 100 is assembled into the mobile terminal 200 through the sealing layer 4, and the sealing layer 4 can increase the water resistance and the sealing performance of the sounder device 100 and simultaneously play a role in buffering to protect the sounder device 100 from being damaged in the transportation process and the use process. Note that, the mobile terminal 200 only shows a part assembled with the sound production device 100.
The invention also provides an embodiment which is substantially the same as the structure, and the difference is that the sound production device further comprises a breathable isolating piece 3a which is covered and fixed on the metal front cover 2a, and meanwhile, the metal front cover 2a has no step structure.
Specifically, as shown in fig. 6 and 7, the metal front cover 2a and the air-permeable partition 3a together define an accommodating cavity 30a, and the sound-generating unit is accommodated in the accommodating cavity 30 a.
Specifically, the metal front cover 2a includes a front cover 22a disposed at an interval with the diaphragm 11a, a surrounding wall 23a extending from the periphery of the front cover 22a to the direction of the diaphragm 11a in a bending manner, an extending wall 24a extending from the periphery of the surrounding wall 23a along the second fixing portion, and a first fixing edge 25a extending from one end of the extending wall 24a far away from the surrounding wall 23a to the direction far away from the sounding single body in a bending manner.
The air-permeable partition 3a includes a bottom plate 31a spaced from the front cover plate 22a, a side wall 32a bent and extended from the periphery of the bottom plate 31a toward the extending wall 24a, and a second fixing edge 33a bent and extended from one end of the side wall 32a away from the bottom plate 31a toward the direction away from the sound-generating unit, wherein the first fixing edge 25a and the second fixing edge 33a are glued and fixed, that is, the metal front cover 2a and the air-permeable partition 3a are glued and fixed by the first fixing edge 25a and the second fixing edge 33 a. That is, the present embodiment is different from the previous embodiment in that the air-permeable partition 3a is added to improve the dust-proof capability without occupying additional space, and preferably, the air-permeable partition 3a is made of a metal material and has a thinner size.
Compared with the prior art, the sounding device comprises a metal front cover and a sealing layer, wherein the metal front cover is covered on one side, far away from the sounding monomer, of the vibrating diaphragm, the sealing layer is attached to one side, far away from the vibrating diaphragm, of the metal front cover, the metal front cover and the vibrating diaphragm are separated to form a sounding front cavity, the metal front cover is provided with a sounding hole which penetrates through the metal front cover and is opposite to the vibrating diaphragm, the sounding front cavity is communicated with the outside through the sounding hole, and the orthographic projection of the sealing layer on the metal front cover along the vibration direction of the vibrating diaphragm is completely located in the range of the metal front cover; namely, the front cover is made of metal material; meanwhile, the sealing layer ensures sealing and water proofing, and the orthographic projection of the sealing layer on the metal front cover along the vibration direction of the vibrating diaphragm is completely positioned in the range of the metal front cover; by adopting the structure, the external size of the sounding device is reduced and the volume of the whole sounding device is reduced on the premise of ensuring the sealing and the water resistance of the sounding device.
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 (2)
1. A sounding device comprises a sounding monomer and a sealing layer, wherein the sounding monomer comprises a vibrating diaphragm used for vibrating and sounding, the sounding device is characterized by further comprising a metal front cover and a sealing layer, the metal front cover is arranged on one side, far away from the sounding monomer, of the vibrating diaphragm in a covering mode, the sealing layer is attached to one side, far away from the vibrating diaphragm, of the metal front cover, the metal front cover and the vibrating diaphragm form a sounding front cavity at an interval, a sounding hole penetrates through the metal front cover and is opposite to the vibrating diaphragm, the sounding hole enables the sounding front cavity to be communicated with the outside, and the sealing layer is located in the range of the metal front cover in the orthographic projection of the metal front cover along the vibrating direction of the vibrating diaphragm;
the metal front cover comprises a front cover plate arranged at an interval with the vibrating diaphragm and a surrounding wall bent and extended from the periphery of the front cover plate to the vibrating diaphragm direction, the sound outlet penetrates through the front cover plate, the sealing layer is attached to one side of the front cover plate, which is far away from the surrounding wall, and one end of the surrounding wall, which is far away from the front cover plate, is abutted to the vibrating diaphragm;
the sounding monomer further comprises a basin frame for supporting and fixing the vibrating diaphragm, the vibrating diaphragm comprises a vibrating part, a bent ring part bent and extended outwards from the periphery of the vibrating part, a first fixing part extended from one side, far away from the vibrating part, of the bent ring part, and a second fixing part extended from one side, far away from the bent ring part, of the first fixing part along the outer periphery of the basin frame, the first fixing part is clamped between the surrounding wall and the basin frame, and the second fixing part is attached to the outer periphery of the basin frame;
the metal front cover further comprises an extension wall extending from the peripheral side of the surrounding wall along the second fixing part, the extension wall and the second fixing part are arranged at intervals, an accommodating space is defined by the extension wall and the basin frame together, and glue is filled in the accommodating space to realize sealing;
the sounding device also comprises a breathable isolating piece which is covered and fixed on the metal front cover and jointly forms an accommodating cavity, and the sounding unit is accommodated in the accommodating cavity;
ventilative separator include with the bottom plate that the front shroud interval set up, by the periphery of bottom plate to extend the wall direction and buckle the lateral wall that extends and by the lateral wall is kept away from the one end of bottom plate is to keeping away from the fixed limit of second that the monomer direction of sound production was buckled and is extended, the metal protecgulum still include by extend the wall and keep away from the one end of leg is to keeping away from the first fixed limit that the monomer direction of sound production was buckled and is extended, first fixed limit with the fixed limit veneer of second is fixed.
2. The sounder device according to claim 1, wherein the metal bezel further comprises a secondary extension wall extending from an end of the first fixing edge away from the extension wall to a direction away from the extension wall, and the secondary extension wall and the first fixing edge enclose a step.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624367.6A CN111935567B (en) | 2020-06-30 | 2020-06-30 | Sound production device |
| PCT/CN2020/114321 WO2022000779A1 (en) | 2020-06-30 | 2020-09-10 | Sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624367.6A CN111935567B (en) | 2020-06-30 | 2020-06-30 | Sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111935567A CN111935567A (en) | 2020-11-13 |
| CN111935567B true CN111935567B (en) | 2022-02-18 |
Family
ID=73316981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010624367.6A Active CN111935567B (en) | 2020-06-30 | 2020-06-30 | Sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111935567B (en) |
| WO (1) | WO2022000779A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112312247A (en) * | 2020-11-30 | 2021-02-02 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN112468940B (en) * | 2020-11-30 | 2022-06-03 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN112312246B (en) * | 2020-11-30 | 2022-03-01 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN218920606U (en) * | 2022-09-30 | 2023-04-25 | 瑞声光电科技(常州)有限公司 | Sounding device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208675534U (en) * | 2018-10-23 | 2019-03-29 | 歌尔科技有限公司 | Sounding device and electronic equipment |
| CN109905822A (en) * | 2018-12-29 | 2019-06-18 | 瑞声科技(新加坡)有限公司 | Electronic equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003264475A (en) * | 2002-03-07 | 2003-09-19 | Hitachi Kokusai Electric Inc | Portable radio equipment including sound emitting structure |
| US9319795B2 (en) * | 2013-11-08 | 2016-04-19 | Anray International Corp. | Method and apparatus for minimizing or preventing interference of two-way radio speaker microphones caused by fine metal particles |
| TW201808019A (en) * | 2016-08-24 | 2018-03-01 | 菱生精密工業股份有限公司 | Micro-electromechanical microphone packaging structure capable of improving the problems of signal interference and excessive I/O pins in conventional wire bonding process |
| CN207382567U (en) * | 2017-10-23 | 2018-05-18 | 上海润欣科技股份有限公司 | A kind of sound-producing device and mobile terminal |
| CN209390293U (en) * | 2018-12-30 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN110062316B (en) * | 2019-06-20 | 2019-09-17 | 瑞声光电科技(常州)有限公司 | Microphone device |
| WO2021000214A1 (en) * | 2019-07-01 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Sound generation device |
-
2020
- 2020-06-30 CN CN202010624367.6A patent/CN111935567B/en active Active
- 2020-09-10 WO PCT/CN2020/114321 patent/WO2022000779A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208675534U (en) * | 2018-10-23 | 2019-03-29 | 歌尔科技有限公司 | Sounding device and electronic equipment |
| CN109905822A (en) * | 2018-12-29 | 2019-06-18 | 瑞声科技(新加坡)有限公司 | Electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111935567A (en) | 2020-11-13 |
| WO2022000779A1 (en) | 2022-01-06 |
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Effective date of registration: 20231019 Address after: 213000 No. 801, Changwu Road, Wujin District, Changzhou City, Jiangsu Province (Yuanyu science and technology building, Changzhou science and Education City) Patentee after: Science and Education City branch of Ruisheng new energy development (Changzhou) Co.,Ltd. Patentee after: Jiangsu Jicui Zhongyi Technology Industry Development Co.,Ltd. Address before: No. 801, Changwu Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: Science and Education City branch of Ruisheng new energy development (Changzhou) Co.,Ltd. |