CN213026671U - Inner core module of socket - Google Patents
Inner core module of socket Download PDFInfo
- Publication number
- CN213026671U CN213026671U CN202021304426.3U CN202021304426U CN213026671U CN 213026671 U CN213026671 U CN 213026671U CN 202021304426 U CN202021304426 U CN 202021304426U CN 213026671 U CN213026671 U CN 213026671U
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- socket
- wire
- groove
- ground wire
- live wire
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Abstract
本实用新型公开一种插座的内芯模组，包括绝缘底座以及位于绝缘底座上方的绝缘外壳，绝缘外壳下端开口并与绝缘底座匹配，绝缘外壳罩在绝缘底座上并与绝缘底座可拆卸连接，绝缘底座上表面并设有三角插座组件以及USB插座组件，绝缘底座上还设有线束进口，绝缘外壳的顶端具有分别与三角插座组件以及USB插座组件对应的三角插口和USB插口。先将三角插座组件以及USB插座组件集成在绝缘外壳内形成模组，能快速的安装在插座外壳内，加快了生产效率；并且，模组整体易于互换，当插座外壳损坏时，直接将整个模组拆卸安装至新的插座外壳上，操作简单方便。
The utility model discloses an inner core module of a socket, comprising an insulating base and an insulating shell located above the insulating base. The lower end of the insulating shell is open and matched with the insulating base, and the insulating shell is covered on the insulating base and is detachably connected with the insulating base. The upper surface of the insulating base is also provided with a triangular socket assembly and a USB socket assembly, the insulating base is also provided with a wire harness inlet, and the top of the insulating shell has a triangular socket and a USB socket corresponding to the triangular socket assembly and the USB socket assembly respectively. First, the triangular socket component and the USB socket component are integrated into the insulating shell to form a module, which can be quickly installed in the socket shell, which speeds up the production efficiency; and the module as a whole is easy to be interchanged. When the socket shell is damaged, the entire The module is disassembled and installed on the new socket shell, and the operation is simple and convenient.
Description
Technical Field
The utility model relates to a socket technical field, concretely relates to inner core module of socket.
Background
In the socket with the triangular jack and the USB jack in the prior art, various conductive copper sheets or functional components are often directly installed in the shell of the socket, so that the shell of the socket is often required to be produced firstly in the production process, and then the conductive copper sheets or the functional components and the like are installed in the shell of the socket, so that the production efficiency is greatly reduced.
In addition, the socket housing is easily damaged by collision because the socket housing is used for supporting and protecting the whole socket, and when the socket housing is damaged, the scattered components need to be disassembled one by one and then reassembled into a new socket housing, which wastes time and labor.
Disclosure of Invention
In order to solve the disadvantages in the prior art, the utility model provides an inner core module of socket.
In order to realize the technical effect, the utility model discloses a following scheme:
the utility model provides an inner core module of socket, includes insulator foot and is located the insulating casing of insulator foot top, insulator foot lower extreme opening and match with insulator foot, the insulating casing cover can dismantle with insulator foot on insulator foot and be connected, the insulator foot upper surface is equipped with triangle socket subassembly and USB socket subassembly, still is equipped with the pencil import on the insulator foot, the top of insulator foot has triangle socket subassembly and the USB socket that corresponds with triangle socket subassembly and USB socket subassembly respectively.
According to the optimized technical scheme, the triangular socket component comprises a live wire socket, a zero wire socket and a ground wire socket which are distributed on the insulating base in a triangular mode, wherein a live wire copper sheet, a zero wire copper sheet and a ground wire copper sheet which are used for conducting electricity are arranged in the live wire socket, the zero wire socket and the ground wire socket respectively, the triangular socket component further comprises a current overload switch, a current input terminal and a current output terminal are arranged on the current overload switch, and the current output terminal is electrically connected with the live wire copper sheet.
The preferable technical scheme is that a fuse piece is arranged above the live wire socket, the zero wire socket and the ground wire socket and comprises a live wire shielding part, a zero wire shielding part and a ground wire shielding part which are distributed in a T shape, the live wire shielding part, the zero wire shielding part and the ground wire shielding part are respectively positioned above the live wire socket, the zero wire socket and the ground wire socket, the upper end of the ground wire connecting part is provided with an inclined plane which faces the direction away from the live wire shielding part and the zero wire shielding part from the upper end of the ground wire shielding part and inclines downwards, the upper surface of the fuse piece is provided with a spring connecting part which is connected with a horizontally arranged spring, one end of the spring is connected with the spring connecting part, the other end of the spring is vertically connected with the inner wall of the insulating shell, which is close to one side of the live wire socket and the zero wire socket, and the fuse piece is connected with a guide, and is moved along the length direction of the spring by the guide structure.
The optimized technical scheme is that the guide structure comprises a guide groove arranged on the inner wall of the top of the insulating shell, the guide groove is arranged in a T shape and corresponds to a triangular socket at the top end of the insulating shell, a safety sheet is embedded into the guide groove, the guide groove and the safety sheet are arranged correspondingly, the guide groove comprises a fire wire groove, a zero wire groove and a ground wire groove which are communicated with each other, a fire wire shielding part on the safety sheet is positioned in the fire wire groove, the zero wire shielding part is positioned in the zero wire groove, a ground wire shielding part is positioned in the ground wire groove, the ground wire groove is provided with a guide part, the distance between the side walls at two sides of the guide part is narrowed, the size of the guide part is matched with the width of the ground wire shielding part of the safety sheet, the safety sheet can only move along the length direction of the spring through the guide part, the lower ends of the side walls at two sides of the ground wire groove respectively protrude towards the inner side of the ground wire, thereby mounting the rupture discs in the guide grooves.
According to the preferred technical scheme, the USB socket assembly comprises a circuit board, functional components are mounted on the circuit board, and the circuit board is detachably connected to the insulating base.
The preferred technical scheme is that the insulating base is provided with a mounting groove, a bearing leaning edge is arranged in the mounting groove, the circuit board is embedded into the mounting groove and leans on the bearing leaning edge, a plurality of buckles used for fixing the circuit board are arranged on the edge of the mounting groove, and the buckles are evenly distributed along the edge of the mounting groove.
According to the technical scheme, the buckle comprises an elastic sheet which is vertically arranged, the elastic sheet has elasticity, the lower end of the elastic sheet is connected with the edge of the mounting groove, the upper end of the elastic sheet is provided with a clamping edge towards the inner side of the mounting groove in a protruding mode, and the lower end of the clamping edge abuts against the upper surface of the circuit board.
According to the preferred technical scheme, the insulating base is connected with the insulating shell through the bolts, a plurality of through holes penetrating through the insulating base are formed in the insulating base, threaded holes corresponding to the through holes are formed in the upper end of the insulating shell, the threaded holes are vertically formed, and the bolts penetrate through the through holes from bottom to top and are connected with the threaded holes.
According to the preferred technical scheme, the insulating base is provided with a plurality of radiating holes, and the radiating holes are located below the circuit board.
Compared with the prior art, beneficial effect does:
the utility model discloses simple structure, convenient to use, in the production process of socket, can produce the shell of socket and the inner core module in the utility model simultaneously, then install the module in the shell of socket, avoided installing the subassembly that disperses in traditional mounting means in the shell of socket in proper order one by one, integrated triangle socket subassembly and USB socket subassembly in insulating casing earlier and form the module, can install in the socket shell fast, accelerated production efficiency; and, and the module is whole easily to be exchanged, when socket shell damages, directly with whole module dismantlement installation to new socket shell on, easy operation is convenient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a top view of the internal structure of the present invention;
FIG. 4 is a schematic view of the structure of the safety disc of the present invention;
FIG. 5 is a schematic view of a mounting slot;
fig. 6 is a schematic bottom view of the insulating housing.
Reference numerals: 1. an insulating housing; 101. a triangular socket; 102. a USB socket; 2. an insulating base; 3. a triangular socket assembly; 301. a live wire socket; 302. a zero line socket; 303. a ground wire socket; 4. a USB socket assembly; 401. a circuit board; 5. a current overload switch; 6. a safety disc; 601. a live line shielding section; 602. a zero line shielding part; 603. a ground wire shielding part; 604. a spring connecting portion; 7. a spring; 8. mounting grooves; 9. a bearing edge; 10. heat dissipation holes; 11. buckling; 1101. a spring plate; 1102. clamping edges; 12. a guide groove; 1201. a fire wire slot; 1202. a zero line slot; 1203. a ground wire groove; 1204. a guide portion; 1205. a bearing part.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
The utility model provides an inner core module of socket, including insulator foot 2 and the insulating casing 1 that is located insulator foot 2 top, insulator foot 2 and insulating casing 1 avoid electrically conductive electric leakage, 1 lower extreme opening of insulator foot matches with insulator foot 2, insulator foot 1 includes roof and lateral wall, the lateral wall is connected in the lower surface of roof, the lateral wall forms the opening at the lower extreme of insulator foot 1 around the border setting of roof, insulator foot 1 covers on insulator foot 2 and can dismantle with insulator foot 2 and be connected, insulator foot 2 upper surface is equipped with triangle socket subassembly 3 and USB socket subassembly 4, triangle socket subassembly 3 and USB socket subassembly 4 are located insulator foot 1, still be equipped with the pencil import on insulator foot 2, the live wire, zero line and ground wire are known pencil import and are inserted in insulator foot 1 and with triangle socket subassembly 3 and USB socket subassembly 4, the top of insulator foot 1 has the triangle that corresponds with triangle socket subassembly 3 and USB socket subassembly 4 respectively and insert A port 101 and a USB socket 102.
The optimized technical scheme includes that the triangular socket component 3 comprises a live wire socket 301, a zero wire socket 302 and a ground wire socket which are distributed on the insulating base 2 in a triangular mode, wherein a live wire copper sheet, a zero wire copper sheet and a ground wire copper sheet which are used for conducting electricity are arranged in the live wire socket 301, the zero wire socket 302 and the ground wire socket respectively, the triangular socket component 3 further comprises a current overload switch 5, a current input terminal and a current output terminal are arranged on the current overload switch 5, and the current output terminal is electrically connected with the live wire copper sheet.
It is well known that there is a pithy electrically "left zero right fire, ground up" where the positions of the fire 301, neutral 302 and ground 303 jacks in the delta socket assembly 3 are fixed, and therefore the distribution of the positions of the fire 301, neutral 302 and ground 303 jacks in this embodiment will not be described in detail, as will be appreciated by those skilled in the art.
The current overload switch 5 can ensure that the input current is not higher than the rated current, the live wire accessed from the wire harness inlet is connected with the current input terminal of the current overload switch 5, the current is led to the live wire copper sheet from the current output electron of the current overload switch 5 after being input into the current overload switch 5 from the live wire, and the ground wire copper sheet and the zero line copper sheet are respectively and electrically connected with the accessed ground wire and the zero line.
The preferable technical scheme, live wire socket 301, zero line socket 302 and ground wire socket 303's top is equipped with rupture disc 6, rupture disc 6 forms and is "T" shape, rupture disc 6 includes live wire shielding portion 601, zero line shielding portion 602 and ground wire shielding portion 603, live wire shielding portion 601, zero line shielding portion 602 and ground wire shielding portion 603 are located live wire socket 301 respectively, zero line socket 302 and ground wire socket 303's top, the upper surface of rupture disc 6 is equipped with spring connecting portion 604, spring connecting portion 604 is connected with the spring 7 that is connected with the horizontal setting, the one end and the spring connecting portion 604 of spring 7 are connected, the inner wall that is close to live wire socket 301 and zero line socket 302 one side on the insulating casing 1 is connected perpendicularly to the other end of spring 7, rupture disc 6 is connected with guide structure, move along spring 7's length direction through guide structure.
Under the natural state, the safety sheet 6 shields the live wire socket 301, the zero wire socket 302 and the ground wire socket 303, so that the safety protection effect can be achieved, and an electric shock accident caused when a conductive object stretches into the triangular socket component 3 can be prevented. A triangular plug in the prior art is provided with a live wire plug-in sheet, a zero line plug-in sheet and a ground wire plug-in sheet. The upper end of the ground connection portion has a slope that is inclined downward from the upper end of the ground shielding portion 603 toward a direction away from the live wire shielding portion 601 and the neutral wire shielding portion 602. When the triangular plug is inserted into the triangular socket component 3, the ground wire inserting sheet of the triangular plug is inserted into the ground wire socket 303, in the inserting process, the ground wire inserting sheet is abutted to the inclined plane of the ground wire shielding part 603 to move downwards to extrude the ground wire shielding part 603 of the safety sheet 6, the spring 7 is compressed, the live wire shielding part 601 and the zero wire shielding part 602 of the safety sheet 6 are moved away from the upper parts of the live wire socket 301 and the zero wire socket 302, the live wire socket 301 and the zero wire socket 302 are exposed, and the live wire inserting sheet and the zero wire inserting sheet of the triangular plug can be inserted.
The preferred technical scheme, the guide structure includes a guide groove 12 arranged on the inner wall of the top of the insulating housing 1, the guide groove 12 is arranged in a T shape, the guide groove 12 corresponds to a triangular socket 101 at the top end of the insulating housing 1, a safety disc 6 is embedded into the guide groove 12, the guide groove 12 corresponds to the safety disc 6, the guide groove 12 includes a live wire groove 1201, a null wire groove 1202 and a ground wire groove 1203 which are communicated with each other, a live wire shielding part 601 on the safety disc 6 is located in the live wire groove 1201, a null wire shielding part 602 is located in the null wire groove 1202, a ground wire shielding part 603 is located in the ground wire groove 1203, the sizes of the live wire groove 1201, the null wire groove 1202 and the ground wire groove 1203 are larger than the sizes of the live wire shielding part 601, the null wire shielding part 602 and the ground wire shielding part 603, and a space required by the safety disc 6.
The ground wire groove 1203 is provided with a guide portion 1204, the distance between the two side walls of the guide portion 1204 is narrowed, the size of the guide portion 1204 is matched with the width of a ground wire shielding portion 603 of the safety disc 6, the safety disc 6 can only move along the length direction of the spring 7 under the drive of the guide portion 1204, the lower ends of the two side walls of the ground wire groove 1203 are respectively provided with a bearing portion 1205 in a protruding manner towards the inner side of the ground wire groove 1203, the shielding portion of the safety disc 6 is supported against the upper surface of the bearing portion 1205, and therefore the safety disc 6 is installed in the guide groove 12.
During installation, the safety sheet 6 is firstly installed in the guide groove 12, one end of the spring 7 is connected with the spring connecting portion 604 on the safety sheet 6, the other end of the spring 7 is vertically connected with the inner wall of the insulating shell 1 close to one side of the live wire socket 301 and the zero wire socket 302, the live wire shielding portion 601, the zero wire shielding portion 602 and the ground wire shielding portion 603 on the safety sheet 6 respectively correspond to three sockets of the triangular socket 101 on the insulating shell 1, then the insulating shell 1 is covered on the base, and the live wire shielding portion 601, the zero wire shielding portion 602 and the ground wire shielding portion 603 on the safety sheet 6 are respectively located above the live wire socket 301, the zero wire socket 302 and the ground wire socket 303 of the triangular socket component 3.
According to the preferred technical scheme, the USB socket assembly 4 comprises a circuit board 401, functional components are mounted on the circuit board 401 and are various components in the prior art of the USB socket assembly 4, and the circuit board 401 is detachably connected to the insulating base 2.
Preferred technical scheme, be equipped with mounting groove 8 on insulating base 2, be equipped with in the mounting groove 8 and hold and lean on along 9, hold in the embedding mounting groove 8 of circuit board 401 and lean on holding along 9, circuit board 401's upper surface and lower surface all install functional components and parts among the prior art, through holding and lean on along 9, form the space that can hold the functional components and parts installed on circuit board 401's lower surface between circuit board 401 and mounting groove 8's bottom, mounting groove 8's border is equipped with a plurality of buckles 11 that are used for fixed circuit board 401, a plurality of buckles 11 are along mounting groove 8's border evenly distributed, fix circuit board 401 in mounting groove 8 through buckle 11.
According to the preferable technical scheme, the buckle 11 comprises a vertically arranged elastic sheet 1101, the elastic sheet 1101 has elasticity, the lower end of the elastic sheet 1101 is connected with the edge of the installation groove 8, a clamping edge 1102 protrudes towards the inner side of the installation groove 8 from the upper end of the elastic sheet 1101, the lower end of the clamping edge 1102 abuts against the upper surface of the circuit board 401, and the circuit board 401 is clamped between the lower end of the clamping edge 1102 and the bearing edge 9 for fixation.
According to the preferred technical scheme, the insulating base 2 is connected with the insulating shell 1 through bolts, a plurality of through holes penetrating through the insulating base 2 are formed in the insulating base 2, the upper end of the insulating shell 1 is provided with a threaded hole corresponding to the through hole, the threaded hole is vertically arranged, the bolt penetrates through the through hole from bottom to top and is connected with the threaded hole, and the bolt is easily detached through the bolts.
According to the preferable technical scheme, the insulating base 2 is provided with the plurality of radiating holes 10, the plurality of radiating holes 10 are located below the circuit board 401, functional components on the circuit board 401 are easy to generate heat in the working process, and the functional components are located in the high-temperature environment for a long time, so that the service life of the functional components can be prolonged, and the radiating holes 10 can be used for radiating heat.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like refer to the orientation or position relationship shown in the drawings, or the orientation or position relationship that the product of the present invention is usually placed when in use, or the orientation or position relationship that one skilled in the art conventionally understands, and are only for convenience of describing the present invention and simplifying the description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (9)
1. The utility model provides an inner core module of socket, a serial communication port, including insulator foot and the insulator casing that is located the insulator foot top, insulator casing lower extreme opening matches with insulator foot, the insulator casing cover can dismantle with insulator foot on insulator foot and be connected, the insulator foot upper surface is equipped with triangle socket subassembly and USB socket subassembly, still is equipped with the pencil import on the insulator foot, the top of insulator casing has triangle socket and the USB socket that corresponds with triangle socket subassembly and USB socket subassembly respectively.
2. The core module of a jack according to claim 1, wherein the triangular jack assembly comprises a live wire jack, a neutral wire jack and a ground wire jack which are triangularly arranged on the insulating base, wherein a live wire copper sheet, a neutral wire copper sheet and a ground wire copper sheet are respectively arranged in the live wire jack, the neutral wire jack and the ground wire jack for conducting electricity, the triangular jack assembly further comprises a current overload switch, the current overload switch is provided with a current input terminal and a current output terminal, and the current output terminal is electrically connected with the live wire copper sheet.
3. The interior core module of socket according to claim 2, wherein a safety piece is disposed above the live wire socket, the neutral wire socket and the ground wire socket, the safety piece is disposed in a "T" shape and includes a live wire shielding portion, a neutral wire shielding portion and a ground wire shielding portion, the live wire shielding portion, the neutral wire shielding portion and the ground wire shielding portion are respectively disposed above the live wire socket, the neutral wire socket and the ground wire socket, the upper end of the ground wire connecting portion has an inclined surface facing away from the live wire shielding portion and the neutral wire shielding portion and inclined downward, the upper surface of the safety piece is provided with a spring connecting portion, the spring connecting portion is connected to a horizontally disposed spring, one end of the spring is connected to the spring connecting portion, the other end of the spring is vertically connected to an inner wall of the insulating housing near the live wire socket and the side of the neutral wire socket, the safety piece is connected to a guiding structure, and is moved along the length direction of the spring by the guide structure.
4. The inner core module of the socket according to claim 3, wherein the guide structure includes a guide groove formed on an inner wall of the top of the insulating housing, the guide groove is formed in a T shape and corresponds to a triangular socket formed at the top end of the insulating housing, the safety plate is inserted into the guide groove, the guide groove is formed corresponding to the safety plate and includes a live wire groove, a neutral wire groove and a ground wire groove which are communicated with each other, a live wire shielding portion of the safety plate is formed in the live wire groove, the neutral wire shielding portion is formed in the zero wire groove, the ground wire shielding portion is formed in the ground wire groove, the ground wire groove has a guide portion, a distance between side walls of the guide portion is narrowed, a size of the guide portion is matched with a width of a ground wire shielding portion of the safety plate, the safety plate is driven by the guide portion to move only along a length direction of the spring, lower ends of the side walls of the ground wire groove are respectively provided with a bearing portion protruding, the shielding part of the safety disc is abutted against the upper surface of the abutting part, so that the safety disc is installed in the guide groove.
5. The core module of claim 1 wherein the USB receptacle assembly includes a circuit board having functional components mounted thereon, the circuit board being removably connected to the dielectric base.
6. The core module of socket as claimed in claim 5, wherein the insulation base has a mounting groove, a bearing edge is formed in the mounting groove, the circuit board is inserted into the mounting groove and is supported on the bearing edge, a plurality of fasteners for fixing the circuit board are formed on the edge of the mounting groove, and the plurality of fasteners are uniformly distributed along the edge of the mounting groove.
7. The inner core module of the socket according to claim 6, wherein the latch comprises a vertically disposed resilient plate, the resilient plate has elasticity, a lower end of the resilient plate is connected to the edge of the mounting groove, an upper end of the resilient plate protrudes toward an inner side of the mounting groove and is provided with a locking edge, and a lower end of the locking edge abuts against an upper surface of the circuit board.
8. The inner core module of the socket according to claim 1, wherein the insulating base is connected with the insulating shell by bolts, the insulating base has a plurality of through holes penetrating through the insulating base, the upper end of the insulating shell has screw holes corresponding to the through holes, the screw holes are vertically arranged, and the bolts penetrate through the through holes from bottom to top and are connected with the screw holes.
9. The socket core module according to claim 1, wherein the insulating base has a plurality of heat dissipation holes, and the plurality of heat dissipation holes are located under the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021304426.3U CN213026671U (en) | 2020-07-06 | 2020-07-06 | Inner core module of socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021304426.3U CN213026671U (en) | 2020-07-06 | 2020-07-06 | Inner core module of socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213026671U true CN213026671U (en) | 2021-04-20 |
Family
ID=75500581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021304426.3U Expired - Fee Related CN213026671U (en) | 2020-07-06 | 2020-07-06 | Inner core module of socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213026671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115224506A (en) * | 2022-06-24 | 2022-10-21 | 宁波市芯能微电子科技有限公司 | A multi-channel power supply integrated power control board |
| CN119921159A (en) * | 2025-04-01 | 2025-05-02 | 宁波西创尼克电子科技有限公司 | A method for assembling a power supply core |
-
2020
- 2020-07-06 CN CN202021304426.3U patent/CN213026671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115224506A (en) * | 2022-06-24 | 2022-10-21 | 宁波市芯能微电子科技有限公司 | A multi-channel power supply integrated power control board |
| CN119921159A (en) * | 2025-04-01 | 2025-05-02 | 宁波西创尼克电子科技有限公司 | A method for assembling a power supply core |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210420 |