CN212113507U - Interlocking mechanism for disconnecting switch and circuit breaker of three-station vacuum circuit breaker - Google Patents
Interlocking mechanism for disconnecting switch and circuit breaker of three-station vacuum circuit breaker Download PDFInfo
- Publication number
- CN212113507U CN212113507U CN202020962439.3U CN202020962439U CN212113507U CN 212113507 U CN212113507 U CN 212113507U CN 202020962439 U CN202020962439 U CN 202020962439U CN 212113507 U CN212113507 U CN 212113507U
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- circuit breaker
- isolation
- interlocking
- cover plate
- isolating
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- 238000002955 isolation Methods 0.000 claims abstract description 122
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to an interlocking device that is used for three station vacuum circuit breaker's isolator and circuit breaker, including frame, isolation operating axis, circuit breaker driving spindle, circuit breaker combined floodgate operating button, circuit breaker separating brake operating button, the last linkage of isolation operating axis is connected with isolation interlocking shift fork, articulated being connected with isolation interlocking piece through fourth articulated shaft in the frame, be connected with circuit breaker mechanism interlocking board in the frame, through the interlocking subassembly of setting up between isolation operating axis and circuit breaker combined floodgate operating button and compriseing isolation interlocking shift fork, isolation interlocking piece, circuit breaker mechanism interlocking board, when making isolation operating axis separating brake, circuit breaker mechanism interlocking board blocks circuit breaker combined floodgate operating button, and then can't press the combined floodgate.
Description
Technical Field
The utility model relates to an interlocking device that is used for three station vacuum circuit breaker's isolator and circuit breaker.
Background
The three-station vacuum circuit breaker integrates a vacuum circuit breaker, an isolating switch and a grounding switch and is arranged in a switch cabinet. When the disconnecting switch is in the opening state, the disconnecting switch needs to be in the opening state, if the disconnecting switch is switched on through misoperation, accidents can be easily caused, therefore, a reliable locking mechanism needs to be arranged between the circuit breaker operating mechanism and the disconnecting switch, and the circuit breaker operating mechanism can not be switched on under the opening state of the disconnecting switch.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide an interlocking device that is used for three station vacuum circuit breaker's isolator and circuit breaker.
The utility model discloses the technical scheme who takes as follows: an interlocking mechanism for an isolating switch and a circuit breaker of a three-station vacuum circuit breaker comprises a rack, an isolating operation shaft, a circuit breaker driving main shaft, a circuit breaker closing operation button and a circuit breaker opening operation button, wherein an isolating interlocking shifting fork is connected to the isolating operation shaft in a linkage manner, an isolating interlocking piece is connected to the rack in a hinged manner through a fourth hinged shaft, a circuit breaker mechanism interlocking plate is connected to the rack, one end of the circuit breaker mechanism interlocking plate is provided with a baffle part, the other end of the circuit breaker mechanism interlocking plate is provided with a first pushing part, two ends of the isolating interlocking piece are respectively matched with the first pushing part and the isolating interlocking shifting fork, the circuit breaker mechanism interlocking plate can slide along a straight line relative to the rack, when the isolating operation shaft is in a closing position, the circuit breaker mechanism interlocking plate is positioned at a first position where the baffle part blocks the circuit breaker closing operation button, and when the isolating operation shaft is, the circuit breaker mechanism interlocking plate is located at a second position where the baffle part is away from the front of the circuit breaker closing operation button to enable the circuit breaker closing operation button to be exposed and pressed.
The isolation interlocking piece is provided with two first convex blocks which are spaced at a certain distance, and the first pushing part is limited between the two first convex blocks.
The side surface of the first bump is a cylindrical surface.
The isolation interlocking piece is provided with a second lug, the second lug is positioned on at least part of a path where the isolation interlocking shifting fork moves when the isolation operating shaft rotates to the opening position from the closing position, and the isolation interlocking piece and/or the circuit breaker mechanism interlocking plate are/is provided with a first reset spring enabling the circuit breaker mechanism interlocking plate to return to the second position.
An operation panel is fixed on the rack, an isolation operation hole is formed in the operation panel, and manual operation can be performed on the isolation operation shaft through the isolation operation hole;
the isolation interlocking cover plate is connected to the rack, can slide relative to the rack and is provided with a third position which blocks the isolation operation hole to enable the isolation operation shaft not to be operated and a fourth position which leaves the area in front of the isolation operation hole to enable the isolation operation shaft to be exposed and to be operated on a sliding path; a transmission assembly is arranged between the isolation interlocking cover plate and the circuit breaker driving main shaft, and when the circuit breaker driving main shaft is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate slides to a third position and/or a fourth position through the transmission assembly; when the breaker driving main shaft is in a switching-on position, the isolation interlocking cover plate is located at a third position; when the breaker driving main shaft is in the opening position, the isolation interlocking cover plate is located at the fourth position.
The transmission assembly comprises a main shaft driving crank arm, an isolation cover plate connecting rod and an isolation cover plate shifting piece; one end of the main shaft driving crank arm is fixed on the circuit breaker driving main shaft and is in linkage fit with the circuit breaker driving main shaft, and the other end of the main shaft driving crank arm is hinged with one end of the isolation cover plate connecting rod through a first hinge post; one end of the isolating cover plate shifting piece is hinged with the rack through a second hinge column, and the other end of the isolating cover plate shifting piece is arranged on one side of the isolating interlocking cover plate or connected with the isolating interlocking cover plate; the other end of the isolation cover plate connecting rod is hinged with the isolation cover plate shifting piece through a third hinge column.
The other end of the isolating cover plate shifting piece is arranged on one side of the isolating interlocking cover plate, and the isolating interlocking cover plate is connected with a second reset spring.
The other end of the isolating cover plate shifting piece is arranged on one side, close to the operation panel, of the isolating interlocking cover plate, and the reset spring is arranged on one side, close to the operation panel, of the isolating interlocking cover plate.
The isolation interlocking cover plate comprises a connecting plate, a cover plate part and a driving part, a strip-shaped hole used for being connected to the rack is formed in the connecting plate, and the other end of the shifting piece is arranged on one side, close to the operating panel, of the driving part.
The utility model has the advantages as follows: the interlocking assembly consisting of the isolation interlocking shifting fork, the isolation interlocking piece and the circuit breaker mechanism interlocking plate is arranged between the isolation operating shaft and the circuit breaker closing operating button, so that when the isolation operating shaft is opened, the circuit breaker mechanism interlocking plate blocks the circuit breaker closing operating button, and further the circuit breaker can not be pressed to be closed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is a schematic structural diagram of the isolation interlocking shift fork, the isolation interlocking piece, the circuit breaker interlocking plate and the circuit breaker opening operation button which are matched with each other when the isolation operation shaft is switched on in the embodiment of the present invention;
fig. 2 is a schematic structural diagram of the isolation interlocking shift fork, the isolation interlocking piece and the circuit breaker interlocking plate which are matched with each other when the isolation operating shaft is switched on in the embodiment of the present invention;
fig. 3 is a fitting relationship between the circuit breaker driving spindle and the isolation interlocking cover plate portion when the circuit breaker driving spindle is switched on according to an embodiment of the present invention;
fig. 4 is a schematic structural view of the separation interlocking cover plate matched with the operation panel when the circuit breaker drives the main shaft to close in the embodiment of the present invention;
fig. 5 is a fitting relationship between the circuit breaker driving spindle and the isolation interlocking cover plate portion when the circuit breaker driving spindle is opened according to an embodiment of the present invention;
fig. 6 is a schematic structural view of the separation interlocking cover plate matched with the operation panel when the circuit breaker drives the main shaft to open the brake according to an embodiment of the present invention;
fig. 7 is a schematic structural view of the isolation interlocking shift fork, the isolation interlocking piece and the circuit breaker interlocking plate in the embodiment of the present invention, which are matched with each other when the isolation operating shaft is opened;
FIG. 8 is a schematic view of the structure of the isolation interlock cover plate;
in the figure, 1, a frame; 2, isolating the operating shaft; 3, a breaker drives the main shaft; 4, a breaker closing operation button; 5, a breaker opening operation button; 6, isolating the interlocking shifting fork; 7, isolating the interlocking piece; 701, a first bump; 702, a second bump; 8, a circuit breaker mechanism interlocking plate; 801, a baffle portion; 802, a first push portion; 9, a fourth articulated shaft; 10, isolating the interlocking cover plate; 1001, connecting plates; 1002, a cover plate portion; 1003, strip-shaped holes; 1004, a driving part; 11, driving a crank arm; 12, a connecting rod; 13, a shifting sheet; 14, a first hinge post; 15, a second hinge post; 16, a third hinge post; 17, a second return spring; 18, an operation panel; 1801, isolating the operation hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.
The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.
As shown in fig. 1, an interlocking mechanism for an isolation switch and a circuit breaker of a three-station vacuum circuit breaker comprises a frame 1, an isolation operation shaft 2, a circuit breaker driving spindle 3, a circuit breaker closing operation button 4 and a circuit breaker opening operation button 5, wherein an isolation interlocking fork 6 is connected to the isolation operation shaft 2 in a linkage manner, an isolation interlocking piece 7 is connected to the frame 1 in a hinged manner through a fourth hinge shaft 9, a circuit breaker interlocking plate 8 is connected to the frame 1, a baffle portion 801 is arranged at one end of the circuit breaker interlocking plate 8, a first pushing portion 802 is arranged at the other end of the circuit breaker interlocking plate 8, two ends of the isolation interlocking piece 7 are respectively matched with the first pushing portion 802 and the isolation interlocking fork 6, the circuit breaker interlocking plate 8 can slide along a straight line relative to the frame 1, when the isolation operation shaft 2 is in a switching position, the circuit breaker interlocking plate 8 is located at a first position where the baffle portion 801 blocks the circuit breaker closing operation, and when the isolation operation shaft 2 is at the closing position, the circuit breaker mechanism interlocking plate 8 is located at a second position where the baffle portion 801 is away from the front of the circuit breaker closing operation button 4 to expose and press the circuit breaker closing operation button 4. The interlocking assembly consisting of the isolation interlocking shifting fork, the isolation interlocking piece and the circuit breaker mechanism interlocking plate is arranged between the isolation operating shaft and the circuit breaker closing operating button, so that when the isolation operating shaft is opened, the circuit breaker mechanism interlocking plate blocks the circuit breaker closing operating button, and further the circuit breaker can not be pressed to be closed.
The circuit breaker interlocking plate 8 can slide along a straight line relative to the rack 1, and specifically can be connected by a strip-shaped hole or connected by a guide rail limit arranged on the rack 1.
As shown in fig. 2, two first protrusions 701 are disposed on the isolation interlocking piece 7 at a certain distance, and the first pushing portion 802 is limited between the two first protrusions 701. When the isolation interlocking piece 7 rotates, the relative height of the first protrusion 701 changes, and the first pushing portion 802 is disposed between the two first protrusions 701, and the height position of the first protrusion 701 relative to the first pushing portion 802 changes, but the transmission relationship is maintained.
The side surface of the first bump 701 is a cylindrical surface. When the isolation interlocking piece 7 rotates to push the circuit breaker mechanism interlocking plate 8 to slide along a straight line or the circuit breaker mechanism interlocking plate 8 slides along a straight line to push the isolation interlocking piece 7 to rotate, friction exists between the first projection 701 and the first pushing portion 802, and friction is reduced through the arrangement of the cylindrical surface.
Be equipped with second lug 702 on isolation interlocking piece 7, second lug 702 is located on at least part route that isolation interlocking shift fork 6 removed when isolation operation shaft 2 rotated to the separating brake position from the closing brake position, be equipped with the first reset spring that makes circuit breaker mechanism interlocking board 8 get back to the second position on isolation interlocking piece 7 and/or circuit breaker mechanism interlocking board 8. First return springs are not shown in the drawings, and specifically, the first return springs may be provided between the breaker mechanism interlock plate 8 and the rack 1 or between the isolation interlock piece 7 and the rack 1.
An operation panel 18 is fixed on the frame 1, an isolation operation hole 1801 is formed in the operation panel 18, and the isolation operation shaft 2 can be manually operated through the isolation operation hole 1801;
as shown in fig. 3 and 4, an isolation interlock cover plate 10 is connected to the frame 1, and the isolation interlock cover plate 10 is slidable with respect to the frame 1 and has a third position on a sliding path for blocking the isolation operation hole 1801 and disabling the isolation operation shaft 2 and a fourth position away from a region in front of the isolation operation hole 1801 and enabling the isolation operation shaft 2 to be exposed and operable; a transmission assembly is arranged between the isolation interlocking cover plate 10 and the breaker driving main shaft 3, and when the breaker driving main shaft 3 is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate 10 is slid to a third position and/or a fourth position through the transmission assembly; when the circuit breaker driving main shaft 3 is at the switching-on position, the isolation interlocking cover plate 10 is located at the third position; when the breaker driving main shaft 3 is in the opening position, the isolation interlocking cover plate 10 is located at the fourth position.
The transmission assembly comprises a main shaft driving crank arm 11, an isolation cover plate connecting rod 12 and an isolation cover plate shifting piece 13; one end of the main shaft driving crank arm 11 is fixed on the breaker driving main shaft 3 and is in linkage fit with the breaker driving main shaft 3, and the other end of the main shaft driving crank arm is hinged with one end of the isolation cover plate connecting rod 12 through a first hinge column 14; one end of the isolating cover plate shifting piece 13 is hinged with the rack 1 through a second hinge column 15, and the other end of the isolating cover plate shifting piece is arranged on one side of the isolating interlocking cover plate 10 or connected with the isolating interlocking cover plate 10; the other end of the isolation cover plate connecting rod 12 is hinged with the isolation cover plate shifting piece 13 through a third hinge column 16.
The other end of the isolating cover plate shifting piece 13 is arranged on one side of the isolating interlocking cover plate 10, and the isolating interlocking cover plate 10 is connected with a second return spring 17.
The other end of the isolating cover plate shifting piece 13 is arranged on one side, close to the operation panel 18, of the isolating interlocking cover plate 10, and the second return spring 17 is arranged on one side, close to the operation panel 18, of the isolating interlocking cover plate 10.
As shown in fig. 8, the isolation interlock cover 10 includes a connecting plate 1001, a cover plate portion 1002, and a driving portion 1003, wherein the connecting plate 1001 is provided with a strip-shaped hole 1004 for connecting to the rack 1, and the other end of the pulling piece 13 is disposed on a side of the driving portion 1003 close to the operation panel 18.
The operation process of the embodiment is as follows:
when the circuit breaker mechanism is in a closing state and the disconnecting switch is in a closing state, as shown in fig. 1, the circuit breaker closing operation button 4 is not blocked by the circuit breaker mechanism interlocking plate 8, as shown in fig. 3 and 4, the isolating operation shaft 2 is blocked by the isolating interlocking cover plate 10, and at the moment, the isolating operation shaft 2 is inoperable, so that the disconnecting switch cannot be opened;
when the circuit breaker mechanism is switched from a closing state to an opening state, the main shaft in fig. 3 drives the connecting lever 11 to rotate anticlockwise, the isolating cover plate shifting piece 13 pushes the isolating interlocking cover plate 10 to move rightwards through the transmission of the isolating cover plate connecting rod 12, and the isolating operation shaft 2 is in an operable state at the time;
when the isolation operation shaft 2 rotates to the opening position, as shown in fig. 7, the isolation interlocking shifting fork 6 rotates anticlockwise, and the isolation interlocking piece 7 drives the circuit breaker mechanism interlocking plate 8 to move rightwards to block the circuit breaker closing operation button 4, so that the circuit breaker mechanism cannot be closed;
when the disconnecting operation shaft 2 is rotated to the closing position, it returns to the position shown in fig. 1, and at this time, the breaker closing operation button 4 is exposed, and the breaker mechanism can be operated to close.
Therefore, the operation sequence of firstly opening the circuit breaker and then opening the isolating switch and firstly closing the isolating switch and then opening the circuit breaker is ensured.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. The utility model provides an interlocking device that is used for isolator and circuit breaker of three station vacuum circuit breaker, includes frame (1), isolation operating shaft (2), circuit breaker drive main shaft (3), circuit breaker combined floodgate operating button (4), circuit breaker open operation button (5), its characterized in that: the isolation operation shaft (2) is connected with an isolation interlocking shifting fork (6) in a linkage manner, the rack (1) is connected with an isolation interlocking piece (7) in a hinged manner through a fourth hinged shaft (9), the rack (1) is connected with a circuit breaker mechanism interlocking plate (8), one end of the circuit breaker mechanism interlocking plate (8) is provided with a baffle plate part (801) and the other end of the circuit breaker mechanism interlocking plate is provided with a first pushing part (802), two ends of the isolation interlocking piece (7) are respectively matched with the first pushing part (802) and the isolation interlocking shifting fork (6), the circuit breaker mechanism interlocking plate (8) can slide along a straight line relative to the rack (1), when the isolation operation shaft (2) is in a brake opening position, the circuit breaker mechanism interlocking plate (8) is positioned at a first position where the baffle plate part (801) blocks a circuit breaker closing operation button (4), and when the isolation operation shaft (2) is in a brake closing position, the circuit breaker mechanism interlocking plate (8) is located at a second position where the baffle portion (801) is away from the front of the circuit breaker closing operation button (4) so that the circuit breaker closing operation button (4) is exposed and can be pressed.
2. The interlock mechanism for a disconnector and circuit breaker of a three-position vacuum circuit breaker according to claim 1, characterized in that: the isolation interlocking piece (7) is provided with two first lugs (701) which are spaced at a certain distance, and the first pushing part (802) is limited between the two first lugs (701).
3. The interlock mechanism for a disconnector and circuit breaker of a three-position vacuum circuit breaker according to claim 2, characterized in that: the side surface of the first bump (701) is a cylindrical surface.
4. The interlock mechanism for a disconnector and circuit breaker of a three-position vacuum circuit breaker according to claim 1, characterized in that: be equipped with second lug (702) on isolation interlocking piece (7), second lug (702) are located on the at least part route that isolation interlocking shift fork (6) removed when keeping apart operating axis (2) from closing position rotation to separating brake position, be equipped with the first reset spring that makes circuit breaker mechanism interlocking board (8) get back to the second position on isolation interlocking piece (7) and/or circuit breaker mechanism interlocking board (8).
5. The interlock mechanism of a disconnector and circuit breaker for a three-position vacuum circuit breaker according to any one of claims 1 to 4, characterized in that: an operation panel (18) is fixed on the rack (1), an isolation operation hole (1801) is formed in the operation panel (18), and the isolation operation shaft (2) can be manually operated through the isolation operation hole (1801);
the machine frame (1) is connected with an isolation interlocking cover plate (10), the isolation interlocking cover plate (10) can slide relative to the machine frame (1) and is provided with a third position which blocks an isolation operation hole (1801) to enable an isolation operation shaft (2) not to be operated and a fourth position which leaves the front area of the isolation operation hole (1801) to enable the isolation operation shaft (2) to be exposed for operation on a sliding path; a transmission assembly is arranged between the isolation interlocking cover plate (10) and the breaker driving main shaft (3), and when the breaker driving main shaft (3) is in at least part of paths of rotary driving opening and closing, the isolation interlocking cover plate (10) is enabled to slide to a third position and/or a fourth position through the transmission assembly; when the breaker driving main shaft (3) is in a switching-on position, the isolation interlocking cover plate (10) is located at a third position; when the breaker driving main shaft (3) is in the opening position, the isolation interlocking cover plate (10) is located at the fourth position.
6. The interlock mechanism for a disconnector and circuit breaker of a three-position vacuum circuit breaker according to claim 5, wherein: the transmission assembly comprises a main shaft driving crank arm (11), an isolation cover plate connecting rod (12) and an isolation cover plate shifting piece (13); one end of the main shaft driving crank arm (11) is fixed on the breaker driving main shaft (3) and is in linkage fit with the breaker driving main shaft (3), and the other end of the main shaft driving crank arm is hinged with one end of the isolation cover plate connecting rod (12) through a first hinge column (14); one end of the isolating cover plate shifting piece (13) is hinged with the rack (1) through a second hinge column (15), and the other end of the isolating cover plate shifting piece is arranged on one side of the isolating interlocking cover plate (10) or connected with the isolating interlocking cover plate (10); the other end of the isolation cover plate connecting rod (12) is hinged to the isolation cover plate shifting piece (13) through a third hinge column (16).
7. The interlock mechanism for a disconnector and circuit breaker of a three-position vacuum circuit breaker according to claim 6, wherein: the other end of the isolating cover plate shifting piece (13) is arranged on one side of the isolating interlocking cover plate (10), and a second reset spring (17) is connected to the isolating interlocking cover plate (10).
8. The interlock mechanism for a disconnector and circuit breaker of a three-position vacuum circuit breaker according to claim 7, wherein: the other end of the isolating cover plate shifting piece (13) is arranged on one side, close to the operating panel (18), of the isolating interlocking cover plate (10), and the return spring (17) is arranged on one side, close to the operating panel (18), of the isolating interlocking cover plate (10).
9. The interlock mechanism for a disconnector and circuit breaker of a three-position vacuum circuit breaker according to claim 8, wherein: the isolation interlocking cover plate (10) comprises a connecting plate (1001), a cover plate part (1002) and a driving part (1003), wherein a strip-shaped hole (1004) used for being connected to the rack (1) is formed in the connecting plate (1001), and the other end of the poking piece (13) is arranged on one side, close to the operation panel (18), of the driving part (1003).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020962439.3U CN212113507U (en) | 2020-05-29 | 2020-05-29 | Interlocking mechanism for disconnecting switch and circuit breaker of three-station vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020962439.3U CN212113507U (en) | 2020-05-29 | 2020-05-29 | Interlocking mechanism for disconnecting switch and circuit breaker of three-station vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212113507U true CN212113507U (en) | 2020-12-08 |
Family
ID=73613861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020962439.3U Expired - Fee Related CN212113507U (en) | 2020-05-29 | 2020-05-29 | Interlocking mechanism for disconnecting switch and circuit breaker of three-station vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212113507U (en) |
-
2020
- 2020-05-29 CN CN202020962439.3U patent/CN212113507U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.221, Jingba Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee after: Yuli Electric Group Co.,Ltd. Address before: No.221, Jingba Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Patentee before: YULI ELECTRICAL Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201208 |