CN110949281A - High-voltage line bundle branching device for new energy automobile - Google Patents
High-voltage line bundle branching device for new energy automobile Download PDFInfo
- Publication number
- CN110949281A CN110949281A CN201911329824.2A CN201911329824A CN110949281A CN 110949281 A CN110949281 A CN 110949281A CN 201911329824 A CN201911329824 A CN 201911329824A CN 110949281 A CN110949281 A CN 110949281A
- Authority
- CN
- China
- Prior art keywords
- groups
- shaped copper
- shells
- new energy
- shaped
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/0207—Wire harnesses
- B60R16/0215—Protecting, fastening and routing means therefor
Abstract
The invention discloses a high-voltage wire harness branching device for a new energy automobile in the technical field of new energy automobiles, which comprises two groups of shells which are mutually clamped, wherein four groups of connection detection devices are arranged between the two groups of shells in a rectangular penetrating manner through stepped through holes, a first mounting plate is horizontally and integrally cast at the left side close to a contact gap, a second mounting plate is horizontally and integrally cast at the upper and lower ends of the right side of the two groups of shells, an inverted U-shaped copper frame, a rectangular copper plate and a fan-shaped copper plate which are mutually welded are clamped between the horizontal gaps of the two groups of shells, the two groups of devices are arranged on a high-low voltage conversion circuit, a short plastic five-star handle bolt is matched with a pressure plate to compress a high-voltage incoming wire, the outgoing wire is wound and fixed through a plurality of long plastic five-star handle bolts and locking nuts, the direction is adjustable, convenient maintenance, convenient operation, high safety and convenient wire distribution.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a high-voltage wire harness branching device for a new energy automobile.
Background
At present, new energy automobiles mainly refer to electric automobiles, the electric energy is used for driving a motor to work to generate power so as to enable the automobiles to run, energy is saved, the environment is protected, the requirements of current sustainable development are met, the electric automobiles in China begin to enter the industrialization stage from the research and development stage, and the electric automobile industry is showing vigorous vitality. The invention discloses a high-voltage wire harness distribution device for a new energy automobile, which is characterized in that a plurality of high-voltage electric devices are arranged on different spatial positions of the whole automobile according to the actual requirement of the whole automobile, high-voltage wire harnesses are generally thicker and harder, if the arrangement of the high-voltage electric devices is more dispersed, difficulty is added to the arrangement and the wiring of the high-voltage wires, if a distribution device can be adopted, the high-voltage wire harnesses are consistent in wiring, and different wires with non-conflict on-off are consistent in path, and after one part of wires are shared, the wires flow into different high-voltage electric devices, so that the length of the high-voltage wire harnesses and the number of high-voltage plug-in components can be effectively reduced, the wiring is convenient, the high-voltage wire harness arrangement is simplified, the assembly time and the production cost are shortened, the commodity of the whole automobile is improved, and therefore, the high-voltage wire harness distribution device for the new energy automobile, to solve the above problems.
Disclosure of Invention
The present invention is directed to provide a high-voltage harness routing apparatus for a new energy vehicle, so as to solve the problem that a high-voltage harness routing apparatus is urgently needed to be designed in the actual production proposed in the background art to facilitate the line distribution of the new energy vehicle.
In order to achieve the purpose, the invention provides the following technical scheme: a high-voltage wire harness branching device for a new energy automobile comprises two groups of shells which are clamped with each other, wherein four groups of connection detection devices are arranged between the two groups of shells in a rectangular penetrating manner through stepped through holes, a first mounting plate is horizontally and integrally cast at the position close to a contact gap on the left side of the two groups of shells, a second mounting plate is horizontally and integrally cast at the upper end and the lower end of the right side of the two groups of shells, an inverted U-shaped copper frame, a rectangular copper plate and a fan-shaped copper plate which are welded with each other are clamped between the horizontal gaps of the two groups of shells, the rectangular copper plate is welded between the inverted U-shaped copper frame and the fan-shaped copper plate, the inverted U-shaped copper frame is positioned between the two groups of first mounting plates, the fan-shaped copper plate is positioned between the two groups of second mounting plates, arc-shaped stepped through grooves are oppositely arranged on the surfaces of the fan, the bottom end of the long plastic five-star handle bolt is in threaded connection with two groups of locking nuts which are respectively positioned on the upper side and the lower side of the fan-shaped copper plate, the surface of the first mounting plate on the upper portion is vertically penetrated through a stepped threaded through hole to be in threaded connection with a short plastic five-star handle bolt, the short plastic five-star handle bolt penetrates through and extends to the inner cavity of the inverted U-shaped copper frame, and the lower portion of the outer wall of the short plastic five-star handle bolt is penetrated through and in threaded connection with a pressure plate;
the connection detection device comprises a long bolt and nut assembly, the bolt outer wall of the long bolt and nut assembly is sleeved with a T-shaped plastic pipe and a straight plastic pipe up and down respectively, the upper end surface of the straight plastic pipe is fixedly connected with a push block, the outer wall of the T-shaped plastic pipe is fixedly connected with a vehicle ultrasonic sensor, a bending channel is arranged between the convex circumferential surface and the lower end surface of the T-shaped plastic pipe, a groove is arranged on the lower end surface of the T-shaped plastic pipe, the groove is communicated with the bending channel, the lower port of the bending channel is fixed with a conductive block through an adhesive beam and a compression spring, the middle parts of the two sides of the inner wall of the groove are horizontally and outwards fixedly connected with a conductive post, the conductive block is attached to the upper surface of the push block, the conductive blocks are arranged above the two groups of conductive columns in a suspended mode, and the two groups of conductive columns form an electric path with an automobile power supply and the automobile ultrasonic sensor through the series transformer.
Furthermore, the two sides of the shell are provided with heat dissipation through holes with filter screens.
Furthermore, the lower part of the inner wall of the inverted U-shaped copper frame is provided with a threaded blind hole in a matching manner relative to the bottom end of the short plastic five-star handle bolt.
Furthermore, welding seams between each two of the inverted U-shaped copper frame, the rectangular copper plate and the fan-shaped copper plate are located on contact gaps of the two groups of shells.
Furthermore, the surfaces of the fan-shaped copper plates on the two sides of the arc-shaped stepped through groove are provided with insulating rubber sleeves.
Furthermore, the periphery of the outer wall of the pressure plate is hexagonal prism-shaped.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, two groups of the device are arranged on a high-low voltage conversion circuit, the short plastic five-star handle bolt is matched with the pressure plate to compress the high-voltage incoming wire, the plurality of long plastic five-star handle bolts and the locking nuts are used for winding and fixing the outgoing wire, the direction is adjustable, and meanwhile, the detection device is connected to detect whether two ends are locked or not, so that the device is convenient to maintain, convenient to operate, high in safety and convenient to separate wires.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural diagram of the connection detection device in fig. 1.
In the drawings, the components represented by the respective reference numerals are listed below:
1-shell, 2-connection detection device, 3-first mounting plate, 4-second mounting plate, 5-inverted U-shaped copper frame, 6-rectangular copper plate, 7-sector copper plate, 8-arc-shaped stepped through groove, 9-long plastic five-star handle bolt, 10-locking nut, 11-end plastic five-star handle bolt, 12-pressing plate, 20-long bolt nut component, 21-T-shaped plastic pipe, 22-straight plastic pipe, 23-pushing block, 24-automotive ultrasonic sensor, 25-bending channel, 26-groove, 27-conductive block and 28-conductive column.
Detailed Description
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. 1-3, the present invention provides a technical solution: a high-voltage wire harness branching device for a new energy automobile comprises two groups of shells 1 which are clamped with each other, four groups of connection detection devices 2 are arranged between the two groups of shells 1 in a penetrating manner in a rectangular manner through stepped through holes, a first mounting plate 3 is horizontally and integrally cast at the position, close to a contact gap, of the left sides of the two groups of shells 1, a second mounting plate 4 is horizontally and integrally cast at the upper end and the lower end of the right side of the two groups of shells 1, inverted U-shaped copper frames 5, rectangular copper plates 6 and fan-shaped copper plates 7 which are mutually welded are clamped between the horizontal gaps of the two groups of shells 1, the rectangular copper plates 6 are welded between the inverted U-shaped copper frames 5 and the fan-shaped copper plates 7, the inverted U-shaped copper frames 5 are positioned between the two groups of first mounting plates 3, the fan-shaped copper plates 7 are positioned between the two groups of second mounting plates 4, arc-shaped stepped through grooves 8 are oppositely arranged on the surfaces, the bottom end of a long plastic five-star handle bolt 9 is in threaded connection with two groups of locking nuts 10, the two groups of locking nuts 10 are respectively positioned on the upper side and the lower side of a fan-shaped copper plate 7, the surface of the upper first mounting plate 3 is vertically penetrated through a stepped threaded through hole and is in threaded connection with a short plastic five-star handle bolt 11, the short plastic five-star handle bolt 11 penetrates through and extends to the inner cavity of the inverted U-shaped copper frame 5, and the lower part of the outer wall of the short plastic five-star handle bolt 11 is penetrated through and is in threaded connection with;
the connection detection device 2 comprises a long bolt nut component 20, a T-shaped plastic pipe 21 and a straight plastic pipe 22 are sleeved on the outer wall of a bolt of the long bolt nut component 20 from top to bottom respectively, a push block 23 is fixedly connected to the upper end face of the straight plastic pipe 22, an ultrasonic sensor 24 for a vehicle is fixedly connected to the outer wall of the T-shaped plastic pipe 21, a bending channel 25 is arranged between the convex peripheral face and the lower end face of the T-shaped plastic pipe 21, a groove 26 is arranged on the lower end face of the T-shaped plastic pipe 21, the groove 26 is communicated with the bending channel 25, a conductive block 27 is fixed to the lower end opening of the bending channel 25 through an adhesive cross beam and a compression spring, conductive columns 28 are horizontally and outwards fixedly connected to the middles of the two sides of the inner wall of the groove 26, the conductive blocks 27 are attached to the upper surface of the push block 23, the conductive blocks 27 are arranged, the signal output end of the vehicle ultrasonic sensor 24 is connected with the vehicle ultrasonic receiving device, when a gap is generated between the two groups of shells 1, it is shown that a high-voltage incoming line connected with the short plastic five-star handle bolt 11 matched with the pressure plate 12 is loosened with an outgoing line connected with the long plastic five-star handle bolt 9 and the locking nut 10, the compression spring enables the conductive block 27 to be contacted with the two groups of conductive posts 28, the vehicle ultrasonic sensor 24 is electrified, the principle of a switch-on radar is similar when the vehicle is similar to a reversing, and the vehicle ultrasonic sensor 24 is positioned on the inner side of the shell 1, so that an alarm signal can be generated when the vehicle is electrified, an alarm system is.
Wherein, the both sides of casing 1 all are provided with the heat dissipation through-hole of taking the filter screen, are convenient for dispel the heat that rectangle copper 6 circular telegrams produced, prevent spontaneous combustion.
The bottom end of the relatively short plastic five-star handle bolt 11 on the lower portion of the inner wall of the inverted U-shaped copper frame 5 is provided with a threaded blind hole in a matching mode, and the pressing plate 12 is matched to compress a thin wire.
The welding seams between the inverted U-shaped copper frame 5, the rectangular copper plate 6 and the fan-shaped copper plate 7 are all located on the contact gaps of the two groups of shells 1, so that pressure is generated on the upper and lower parts of the shells, one end is prevented from being fixed, and the other end is suspended and is easy to stress and break.
The surfaces of the fan-shaped copper plates 7 on the two sides of the arc-shaped stepped through groove 8 are provided with insulating rubber sleeves, so that the probability of electric shock is reduced.
The periphery of the outer wall of the pressure plate 12 is hexagonal prism-shaped, so that the pressure plate can be conveniently rotated by a wrench.
Two sets of the device are arranged on a high-low voltage conversion circuit, a short plastic five-star handle bolt 11 is matched with a pressure plate 12 to compress a high-voltage incoming wire, the outgoing wire is wound and fixed through a plurality of long plastic five-star handle bolts 9 and locking nuts 10, the direction is adjustable, and meanwhile, the detection device 2 is connected to detect whether two ends are locked or not, and maintenance is facilitated.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a high-voltage line bundle branching device that new energy automobile used, includes two sets of casings (1) of mutual block, its characterized in that: the device is characterized in that four groups of connection detection devices (2) are arranged between two groups of shells (1) in a rectangular penetrating manner through stepped through holes, a first mounting plate (3) is arranged on the left side of each group of shells (1) close to a contact gap and is horizontally and integrally poured, a second mounting plate (4) is arranged on the right side of each group of shells (1) and is horizontally and integrally poured at the upper end and the lower end, an inverted U-shaped copper frame (5), a rectangular copper plate (6) and a fan-shaped copper plate (7) which are welded with each other are clamped between the horizontal gaps of the two groups of shells (1), the rectangular copper plate (6) is welded between the inverted U-shaped copper frame (5) and the fan-shaped copper plate (7), the inverted U-shaped copper frame (5) is positioned between the two groups of first mounting plates (3), the fan-shaped copper plate (7) is positioned between the two groups of second mounting plates (4), the fan-shaped copper plate (, the two groups of arc-shaped stepped through grooves (8) are connected through a plurality of long plastic five-star handle bolts (9), the bottom ends of the long plastic five-star handle bolts (9) are in threaded connection with two groups of locking nuts (10), the two groups of locking nuts (10) are respectively positioned on the upper side and the lower side of the fan-shaped copper plate (7), the surface of the first mounting plate (3) on the upper portion is vertically penetrated through a stepped thread through hole and is in threaded connection with short plastic five-star handle bolts (11), the short plastic five-star handle bolts (11) penetrate through an inner cavity extending to the inverted U-shaped copper frame (5), and the lower portion of the outer wall of each short plastic five-star handle bolt (11) is penetrated through a pressure plate (12;
connect detection device (2) including stay bolt nut component (20), T type plastic tubing (21) and straight plastic tubing (22) have been cup jointed from top to bottom respectively to the bolt outer wall of stay bolt nut component (20), up end fixedly connected with ejector pad (23) of straight plastic tubing (22), the automobile-used ultrasonic sensor (24) of outer wall fixedly connected with of T type plastic tubing (21), be provided with between the protrusion global of T type plastic tubing (21) and the lower terminal surface and buckle passageway (25), the lower terminal surface of T type plastic tubing (21) is equipped with recess (26), and recess (26) communicate with each other with buckle passageway (25), the lower port of buckling passageway (25) is fixed with conducting block (27) through sticky crossbeam and compression spring, the outside fixedly connected with in inner wall both sides middle part level of recess (26) leads electrical pillar (28), conducting block (27) and the upper surface laminating of ejector pad (23), the conductive blocks (27) are arranged above the two groups of conductive posts (28) in a suspended mode, and the two groups of conductive posts (28) form an electric path with an automobile power supply and the automotive ultrasonic sensor (24) through serially connected transformers.
2. The high-voltage wire harness distribution device for the new energy automobile according to claim 1, characterized in that: and heat dissipation through holes with filter screens are arranged on two sides of the shell (1).
3. The high-voltage wire harness distribution device for the new energy automobile according to claim 1, characterized in that: the lower part of the inner wall of the inverted U-shaped copper frame (5) is provided with a threaded blind hole in a matching way relative to the bottom end of the short plastic five-star handle bolt (11).
4. The high-voltage wire harness distribution device for the new energy automobile according to claim 1, characterized in that: the welding seams between each two of the inverted U-shaped copper frame (5), the rectangular copper plate (6) and the fan-shaped copper plate (7) are located on the contact gaps of the two groups of shells (1).
5. The high-voltage wire harness distribution device for the new energy automobile according to claim 1, characterized in that: the surfaces of the fan-shaped copper plates (7) on the two sides of the arc-shaped stepped through groove (8) are provided with insulating rubber sleeves.
6. The high-voltage wire harness distribution device for the new energy automobile according to claim 1, characterized in that: the periphery of the outer wall of the pressing plate (12) is hexagonal prism-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329824.2A CN110949281B (en) | 2019-12-20 | 2019-12-20 | High-voltage line bundle branching device for new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329824.2A CN110949281B (en) | 2019-12-20 | 2019-12-20 | High-voltage line bundle branching device for new energy automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110949281A true CN110949281A (en) | 2020-04-03 |
| CN110949281B CN110949281B (en) | 2020-10-13 |
Family
ID=69983313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911329824.2A Active CN110949281B (en) | 2019-12-20 | 2019-12-20 | High-voltage line bundle branching device for new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110949281B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114765356A (en) * | 2022-01-22 | 2022-07-19 | 潘惠芳 | High-voltage wire harness branching device and method for new energy automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200959501Y (en) * | 2006-07-17 | 2007-10-10 | 王辉 | Central electric wiring box of automobile |
| CN102868120A (en) * | 2011-07-05 | 2013-01-09 | 株式会社自动网络技术研究所 | Wiring tool, wiring harness and manufacture method thereof |
| CN110176740A (en) * | 2019-04-15 | 2019-08-27 | 汉腾汽车有限公司 | A kind of new-energy automobile high voltage wire protector |
| CN209461940U (en) * | 2018-12-25 | 2019-10-01 | 郑州日产汽车有限公司 | New-energy automobile high-voltage wiring harness line device |
| US20190348824A1 (en) * | 2018-05-08 | 2019-11-14 | Yazaki Corporation | Locking Structure, Electrical Connection Box, and Wire Harness |
-
2019
- 2019-12-20 CN CN201911329824.2A patent/CN110949281B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200959501Y (en) * | 2006-07-17 | 2007-10-10 | 王辉 | Central electric wiring box of automobile |
| CN102868120A (en) * | 2011-07-05 | 2013-01-09 | 株式会社自动网络技术研究所 | Wiring tool, wiring harness and manufacture method thereof |
| US20190348824A1 (en) * | 2018-05-08 | 2019-11-14 | Yazaki Corporation | Locking Structure, Electrical Connection Box, and Wire Harness |
| CN209461940U (en) * | 2018-12-25 | 2019-10-01 | 郑州日产汽车有限公司 | New-energy automobile high-voltage wiring harness line device |
| CN110176740A (en) * | 2019-04-15 | 2019-08-27 | 汉腾汽车有限公司 | A kind of new-energy automobile high voltage wire protector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114765356A (en) * | 2022-01-22 | 2022-07-19 | 潘惠芳 | High-voltage wire harness branching device and method for new energy automobile |
| CN114765356B (en) * | 2022-01-22 | 2024-05-03 | 东莞市容诚电子有限公司 | High-voltage wire harness branching device and method for new energy automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110949281B (en) | 2020-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102812370A (en) | High Voltage Sensing Capacitor And Indicator Device | |
| CN110949281B (en) | High-voltage line bundle branching device for new energy automobile | |
| CN108549022A (en) | A kind of high-pressure vacuum breaker production verifying attachment | |
| CN211335595U (en) | Circuit protection device | |
| KR101794232B1 (en) | Expandable busbar assembly | |
| CN112701651B (en) | Electrical equipment and cable connection terminal strip thereof | |
| CN109683108B (en) | Hot-pluggable power supply monitoring device | |
| CN207691047U (en) | A kind of step right angle fixed high-pressure high current connecting terminal | |
| CN210380157U (en) | High-protection jack box | |
| CN219829968U (en) | Adjustable electric power safety monitoring device | |
| CN220399506U (en) | Three-phase line connection tool for mixing box | |
| CN217507695U (en) | LED module power pack and box thereof | |
| CN216903537U (en) | Cable quick access device | |
| CN215732270U (en) | Electric wire connecting device | |
| CN210775567U (en) | Wiring device for main transformer detection test | |
| CN219960035U (en) | Signal monitoring lightning protection branching cabinet | |
| CN103837787B (en) | Electrical power distribution case PE and the alarm method and device of N bus loose contacts | |
| CN213584210U (en) | Wiring protector of new energy automobile air conditioner compressor | |
| CN218603176U (en) | Cubical switchboard arc light temperature rise protection early warning device | |
| CN215528545U (en) | Bus duct with high heat dissipation performance | |
| CN106384900B (en) | Connector body, connector assembly, busbar assembly and cell apparatus | |
| CN212353874U (en) | Waterproof dirt-proof electron pencil with it is well sealed | |
| CN215733835U (en) | Low-power motor capacity-increasing high-power motor magnetic balance differential protection device | |
| CN210052990U (en) | Module for lapping low-voltage switch bus | |
| CN214589484U (en) | Safe and reliable high-voltage high-current junction box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200916 Address after: No.905 Yongchang Road, Suining County, Xuzhou City, Jiangsu Province Applicant after: JIANGSU LYUNENG AUTO ACCESSORIES TECHNOLOGY Co.,Ltd. Address before: 436060 dafangwan, Wanzhou village, Donggou Town, Liangzihu District, Ezhou City, Hubei Province Applicant before: Gong Shuang |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |