CN115101387B - Electric shock prevention structure of circuit breaker, circuit breaker and distributor - Google Patents
Electric shock prevention structure of circuit breaker, circuit breaker and distributor Download PDFInfo
- Publication number
- CN115101387B CN115101387B CN202210874969.6A CN202210874969A CN115101387B CN 115101387 B CN115101387 B CN 115101387B CN 202210874969 A CN202210874969 A CN 202210874969A CN 115101387 B CN115101387 B CN 115101387B
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- locking structure
- handle mechanism
- housing
- locking
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
Abstract
The invention discloses an electric shock preventing structure of a circuit breaker, the circuit breaker and a distributor. The electric shock prevention structure of the circuit breaker comprises a first locking structure, the first locking structure is arranged in a shell of the circuit breaker, a first end of the first locking structure is abutted against a first side face of a handle mechanism of the circuit breaker, and the first side face is a side face of a second end, far away from the first locking structure, of the handle mechanism; the first end of the second locking structure is abutted against the first side face of the handle mechanism of the circuit breaker; when the handle mechanism moves to the first position relative to the shell in the first direction under the action of external force, the handle mechanism drives the contact system to be switched on and switched off through the operating mechanism of the circuit breaker, and the second end of the first locking structure and the second end of the second locking structure both extend out of the shell. The breaker can not be inserted into or pulled out of the case when being switched on, thereby avoiding the live-line operation of the breaker and improving the electricity utilization safety.
Description
Technical Field
The invention relates to the technical field of low-voltage electric appliances, in particular to an electric shock prevention structure of a circuit breaker, the circuit breaker and a distributor.
Background
The circuit breaker can be divided into a fixed type and a plug-in type according to the installation mode. Traditional circuit breaker is fixed, generally adopts the elastic component to press from both sides the card and fixes the circuit breaker on the quick-witted incasement of distributor, takes off the circuit breaker then need use the screwdriver, and the operation is inconvenient. The plug-in circuit breaker can be disassembled and assembled in a case of the distributor through simple plug-in operation. The breaker can bear and break fault current within a specified time as a switching element, and the internal operating mechanism drives the contact system to realize on-off. After the circuit breaker is installed in the case, the circuit breaker is connected with a power supply in the case, and when the circuit breaker is closed, the contact system is switched on to supply power to a load connected with the circuit breaker. In the process that the breaker needs to be inserted into or pulled out of a case, in order to avoid live operation of the breaker, the movable and static contacts in the breaker are ensured to be in an off state. Especially, with the increasingly wide intelligent application of 5G technology, intelligent cloud power distribution and the like, the safe power utilization is more important. However, in the process of inserting or extracting the conventional plug-in circuit breaker into or from the chassis, the circuit breaker may be in a powered-on state, the safety of the circuit breaker is low, and the personal safety hazard of an operator is easily caused.
Therefore, there is a need for an electric shock protection mechanism of a circuit breaker to solve the above problems.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and provides an electric shock prevention structure of a circuit breaker, which solves the problem that the circuit breaker is pulled out of a case or inserted into the case in a live state.
The above purpose is realized by the following technical scheme:
an electric shock preventing structure of a circuit breaker, comprising:
the first locking structure is arranged in a shell of the circuit breaker, a first end of the first locking structure is abutted against a first side surface of a handle mechanism of the circuit breaker, and the first side surface is a side surface of a second end, far away from the first locking structure, of the handle mechanism;
the first end of the second locking structure is abutted against a first side face of a handle mechanism of the circuit breaker, and the first side face of the handle mechanism is opposite to the second side face of the handle mechanism;
when the handle mechanism moves to a first position relative to the shell in a first direction under the action of external force, the handle mechanism drives a contact system of the circuit breaker to be switched on and switched off through an operating mechanism of the circuit breaker, and a second end of the first locking structure and a second end of the second locking structure both extend out of the shell; when the handle mechanism moves to a second position relative to the shell in a second direction under the action of external force, the handle mechanism drives a contact system of the circuit breaker to open and close through an operating mechanism of the circuit breaker, a second end of the first locking structure extends out of the shell, a second end of the second locking structure retracts into the shell, and the first direction is opposite to the second direction;
the first end of the first locking structure is disposed opposite the second end of the first locking structure, and the first end of the second locking structure is disposed opposite the second end of the second locking structure.
Optionally, the handle mechanism includes a handle body and a first inclined surface disposed on the second side surface of the handle body, the first inclined surface is disposed along a first direction and inclined toward a direction close to the handle body, and the second locking structure includes:
the first lock body is abutted with the first inclined surface;
the first lock head is arranged at one end, far away from the handle body, of the first lock body.
Optionally, the second locking structure further includes a second inclined surface, and the second inclined surface is disposed at an end of the first lock body facing the handle mechanism and attached to the first inclined surface.
Optionally, the second locking structure further includes an elastic resetting member, one end of the elastic resetting member is connected to the first lock body, the other end of the elastic resetting member is connected to the housing, when the handle mechanism moves to the second position relative to the housing under the action of external force, the first lock body resets under the restoring force of the elastic resetting member, and the first lock head retracts into the housing.
Optionally, the locking device further comprises a guide structure disposed between the second locking structure and the housing and disposed along a direction perpendicular to the first direction, the guide structure being configured to define a moving direction of the second locking structure.
Optionally, the handle mechanism includes a handle body and a limit structure disposed on a first side of the handle body, the limit structure includes a first limit position and a second limit position, and the first locking structure includes:
a second lock body;
the limiting part is arranged at the first end of the second lock body, and when the handle mechanism moves to a first position relative to the shell along a first direction under the action of external force, the limiting part falls into the first limiting position; when the handle mechanism moves to a second position along a second direction relative to the shell under the action of external force, the limiting part falls into the second limiting position.
Optionally, the circuit breaker further comprises a first elastic member, the first elastic member is disposed between the first locking structure and the housing, and a first end of the first locking structure can be pressed against a first side surface of a handle mechanism of the circuit breaker under the action of the first elastic member.
Optionally, the handle further comprises a second elastic member, the second elastic member is arranged between the handle body and the shell, and the handle body can have a tendency to move along the second direction under the action of the second elastic member.
Optionally, the limiting structure includes a first groove and a second groove sequentially arranged along a first direction at an interval, a spacing portion is formed between the first groove and the second groove, and when the handle mechanism moves to the first position along the first direction relative to the housing under the action of an external force, the limiting portion slides from the second groove into the first groove through the spacing portion; when the handle mechanism moves to the second position along the second direction relative to the shell under the action of external force, the limiting part slides into the second groove from the first groove through the spacing part.
Optionally, the second groove is sequentially provided with a first abutting side surface, a first bottom side surface and a second abutting side surface along the second direction, the first abutting side surface is perpendicular to the second direction, and the second abutting side surface is inclined along the second direction towards a direction away from the first bottom side surface.
Optionally, the first groove is provided with a third abutting side surface, a second bottom side surface and a fourth abutting side surface in sequence along the second direction, the third abutting side surface is obliquely arranged along the second direction toward a direction close to the second bottom side surface, and the fourth abutting side surface is perpendicular to the second direction.
Optionally, the limiting portion is provided with a first limiting side face, a first guiding inclined face, a first transition abutting face, a second guiding inclined face and a second limiting side face in sequence along the first direction, the first limiting side face is perpendicular to the first direction, the first guiding inclined face is the same as the second abutting side face in the inclined direction, and the second guiding inclined face is the same as the third abutting side face in the inclined direction.
Optionally, a first arc surface is disposed between the second abutting side surface and the third abutting side surface.
Optionally, a stopping portion is arranged on the handle body, the limiting structure includes a first boss, the first boss is sequentially provided with a first guide surface and a second guide surface along a second direction, and when the handle mechanism moves to a first position relative to the housing along the first direction, the limiting portion slides from the first guide surface of the first boss to the second guide surface of the first boss; when the handle mechanism moves to the second position relative to the housing along a second direction, the limiting part slides from the second guide surface of the first boss to the first guide surface of the first boss, and the stopping part abuts against the housing to limit the handle mechanism to move along the second direction.
Optionally, a second arc surface is disposed between the first guide surface and the second guide surface.
Optionally, the first guide surface is disposed along a second direction in an inclined manner toward a direction close to the second arc surface, and the second guide surface is disposed along the second direction in an inclined manner toward a direction away from the second arc surface.
Optionally, the limiting portion is sequentially provided with a third guide surface, a third arc surface, a second transition abutting surface, a fourth arc surface and a fourth guide surface along the first direction, the third guide surface is the same as the first guide surface in the inclined direction, and the fourth guide surface is the same as the second guide surface in the inclined direction.
The invention provides a circuit breaker, which comprises a shell, a handle mechanism extending into the shell and the anti-electric shock structure, wherein the shell is provided with a first locking hole and a second locking hole, the second end of the first locking structure penetrates through the first locking hole and extends out of the shell, and the second end of the second locking structure penetrates through the second locking hole and extends out of the shell.
The invention further provides a distributor, which comprises a case and the breaker, wherein the case is provided with a first opening corresponding to a first locking hole and a second opening corresponding to a second locking hole, a second end of a first locking structure sequentially penetrates through the first locking hole and the first opening and extends out of the case, and a second end of a second locking structure sequentially penetrates through the second locking hole and the second opening and extends out of the case.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. when the contact system of the circuit breaker is switched on and switched on, the circuit breaker is doubly locked, even if the second end of the first locking structure is pressed into the shell, the circuit breaker cannot be pulled out of the case, so that the problem that the circuit breaker is pulled out of the case in a live state is avoided, and meanwhile, when the contact system of the circuit breaker is in a switched on state, a user cannot insert the circuit breaker into the case because the second end of the second locking structure always extends out of the case, so that the problem that the circuit breaker is inserted into the case in the live state is avoided; when the contact system of circuit breaker is opened, press the second end of first locking structure in the casing, can extract quick-witted case with the circuit breaker to can push quick-witted case with the circuit breaker, avoid live-wire operation when installation, maintenance, improve product protection against electric shock protect function, use electricity safe and reliable more.
2. The handle mechanism is linked with the first locking structure and the second locking structure, the second end of the first locking structure is driven by the handle mechanism to retract into or extend out of the shell through the first locking hole, when the breaker is inserted into the case, the second lock head is compressed, position detection can be performed at the moment, and after the breaker reaches the first locking hole, the breaker is popped out from the first locking hole, so that the installation and the limiting of the breaker are realized; the handle mechanism drives the second locking structure to retract or extend out of the shell through the second locking hole, and the second end of the second locking structure retracts or extends out of the shell through the second locking hole, so that the installation of the circuit breaker is limited. When the breaker is not installed in place or the case is completely pulled out, the handle mechanism cannot act on the operating mechanism, so that the contact system cannot be switched on and switched off, the breaker is mechanically locked, the breaker cannot be pulled out or inserted into the case when electrified, and the anti-electric shock protection function is achieved. And electronic detection elements are arranged near the first locking structure and the second locking structure to detect positions and output real-time position signals, so that the real-time monitoring of the opening and closing of the circuit breaker is realized.
3. The first locking structure and the second locking structure are mechanically linked with the handle mechanism, and the handle drives the circuit breaker operating mechanism to move so as to drive the contact system to be switched on and off. The handle mechanism can be driven manually, and can also be driven by the motor gear mechanism in the shell and a circuit board in communication connection with the motor gear mechanism to carry out local and remote control, carry out real-time data acquisition, real-time remote fault alarm, maintenance guide, brake opening and closing operations, and meet the popularization and application of the circuit breaker in rapidly developed intelligent and digital scenes.
Drawings
Fig. 1 is a schematic structural diagram of a power distributor provided in an embodiment of the present invention;
fig. 2 is a schematic perspective view of a circuit breaker according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a circuit breaker according to an embodiment of the present invention in an open state;
fig. 4 is a schematic diagram of a circuit breaker in a closing state according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of a second locking structure of the circuit breaker installed in the housing according to the embodiment of the present invention (when the circuit breaker is in the open state);
fig. 6 is a schematic perspective view of a first locking structure, a second locking structure and a handle mechanism of the circuit breaker installed in a housing according to an embodiment of the present invention (when the circuit breaker is in an opening state);
fig. 7 is a schematic perspective view of a first locking structure of the circuit breaker installed in a housing according to an embodiment of the present invention;
fig. 8 is a schematic diagram of the first locking structure of the circuit breaker and the handle body (when the circuit breaker is in the open state) according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a first locking structure of the circuit breaker according to an embodiment of the present invention, which is engaged with the handle body (when the circuit breaker is in a closed state);
fig. 10 is a schematic perspective view of a handle body of a circuit breaker according to an embodiment of the invention;
fig. 11 is a schematic perspective view illustrating a first locking structure of the circuit breaker according to an embodiment of the invention;
fig. 12 is a schematic diagram of a circuit breaker according to another embodiment of the present invention in an open state;
fig. 13 is a schematic view of the first locking structure of the circuit breaker and the handle body in cooperation with each other (when the circuit breaker is in an open state);
fig. 14 is a schematic diagram of a circuit breaker according to another embodiment of the invention in a closed state;
fig. 15 and fig. 13 are schematic diagrams illustrating the first locking structure of the circuit breaker and the handle body according to another embodiment of the present invention (when the circuit breaker is in a closed state);
fig. 16 is a schematic perspective view of a handle body of a circuit breaker according to another embodiment of the invention;
fig. 17 is a schematic perspective view illustrating a first locking structure of a circuit breaker according to another embodiment of the invention.
In the figure:
11. a lower housing; 111. a second locking hole; 112. a first locking member; 113. a guide member; 114. a second locking member;
12. an upper housing; 121. a first locking hole; 122. a limiting column; 123. a stopper;
2. a handle mechanism; 21. a handle body; 211. a stopper portion; 22. a first inclined plane; 23. a handle; 24. straight teeth; 201. a second groove; 2011. a first abutment side surface; 2012. a first bottom side; 2013. a second abutment flank; 202. a first groove; 2021. a third abutment side surface; 2022. a second bottom side; 2023. a fourth abutment side surface; 203. a spacer section; 2031. a first arc surface; 204. a first boss; 2041. a first guide surface; 2042. a second arc surface; 2043. a second guide surface;
3. a first locking structure; 31. a second lock body; 311. a locking slot hole; 32. a limiting part; 321. a first limit side surface; 322. a first guide slope; 323. a first transitional abutting surface; 324. a second guide slope; 325. a second limiting side surface; 301. a third guide surface; 302. a third arc surface; 303. a second transitional abutting surface; 304. a fourth arc surface; 305. a fourth guide surface; 33. a second lock head; 34. a connecting member;
4. a second locking structure; 41. a first lock body; 42. a first lock head; 43. a second inclined surface; 44. a guide groove;
5. a first elastic member;
6. an elastic reset member;
7. a chassis;
8. a second elastic member;
9. a motor gear mechanism;
101. a first opening; 102. and a second opening.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Referring to fig. 1 to 17, the present invention provides a power distributor, which includes a case 7 and a circuit breaker, wherein the circuit breaker includes a housing and a handle mechanism 2 extending into the housing, and further includes the above-mentioned electric shock preventing structure, and the housing is provided with a first locking hole 121 and a second locking hole 111. The casing 7 is opened with a first opening 101 corresponding to the first locking hole 121 and a second opening 102 corresponding to the second locking hole 111.
The electric shock preventing structure includes a first locking structure 3 and a second locking structure 4. First locking structure 3 sets up in the casing of circuit breaker, and the first side butt of the first end of first locking structure 3 and the handle mechanism 2 of circuit breaker, the side of the second end that first locking structure 3 was kept away from for handle mechanism 2 in the first side. The second locking structure 4 is arranged in the shell of the circuit breaker, the first end of the second locking structure 4 is abutted against the second side face of the handle mechanism 2 of the circuit breaker, and the second side face of the handle mechanism 2 is arranged opposite to the first side face of the handle mechanism 2. When the handle mechanism 2 moves to a first position relative to the case in a first direction (a direction shown by an arrow a in fig. 3 and 12) under the action of an external force (the external force includes a force generated by manually pushing in and pulling out the handle, a force generated by driving the handle by the motor, and a circuit failure occurs, and when the contact system is disconnected, the contact system drives the handle by the operating mechanism), the handle mechanism 2 drives the contact system of the circuit breaker by the operating mechanism of the circuit breaker, a second end of the first locking structure 3 (arranged opposite to the first end of the first locking structure 3) sequentially passes through the first locking hole 121 and the first opening 101 to extend out of the case 7, and a second end of the second locking structure 4 sequentially passes through the second locking hole 111 and the second opening 102 to extend out of the case 7, so that the circuit breaker cannot be pulled out of the case 7 even if the second end of the first locking structure 3 is pressed into the case, and thus the problem that the circuit breaker is pulled out of the case 7 in a live state is avoided, and at the same time, when the contact system of the circuit breaker is in a closed state, the second locking structure 4 is inserted into the case 7, so that the second end of the case is always inserted into the case, and the case 7, so that the circuit breaker is not inserted into the case 4; when the handle mechanism 2 moves to the second position toward the second direction (the direction indicated by arrow B in fig. 3 and fig. 12 is opposite to the direction indicated by arrow a) under the action of external force (when fault current occurs in the energized state, the contact system drives the handle mechanism 2 to move to the second position through the operating mechanism), the handle mechanism 2 drives the contact system of the circuit breaker to open through the operating mechanism of the circuit breaker, the second end of the first locking structure 3 extends out of the housing, the second end of the second locking structure 4 retracts into the housing, the second end of the first locking structure 3 is pressed into the housing at the moment, the circuit breaker can be pulled out of the case 7, and the circuit breaker can be pushed into the case 7.
Optionally, the housing includes an upper housing 12 and a lower housing 11, the handle mechanism 2 extends into a cavity formed by the upper housing 12 and the lower housing 11, and the first locking structure 3 and the second locking structure 4 are both disposed in the cavity. The first locking hole 121 is formed in the upper case 12, and the second locking hole 111 is formed in the lower case 11.
Optionally, the handle mechanism 2 includes a handle body 21 and a first inclined surface 22 disposed on a second side surface of the handle body 21, and a handle 23 is further disposed on a portion of the handle body 21 located outside the housing. The first inclined surface 22 is inclined in a first direction toward a direction close to the handle body 21, and the second locking structure 4 includes a first locker 41 and a first locker 42. The first lock body 41 abuts against the first inclined surface 22. The first lock head 42 is disposed at an end of the first lock body 41 away from the handle body 21.
Optionally, the second locking structure 4 further includes a second inclined surface 43, the second inclined surface 43 is disposed at an end of the first locking body 41 facing the handle mechanism 2 and attached to the first inclined surface 22, when the handle body 21 is pushed in the first direction, the first inclined surface 22 pushes the second inclined surface 43, so that the second locking structure 4 gradually moves in a direction away from the handle body 21, and when the handle mechanism 2 moves to the first position relative to the housing under the action of external force, the first locking head 42 extends out of the housing.
Optionally, the second locking structure 4 further includes an elastic resetting member 6, one end of the elastic resetting member 6 is connected to the first lock body 41, and the other end of the elastic resetting member 6 is connected to the housing, when the handle mechanism 2 moves to the second position relative to the housing under the action of external force, the first lock body 41 resets under the restoring force of the elastic resetting member 6, and the first lock head 42 retracts into the housing.
Optionally, the elastic reset element 6 is a tension spring, and a first locking element 112 is further disposed in the lower housing 11, and one end of the tension spring is connected to the first locking element 41, and the other end of the tension spring is connected to the first locking element 112.
Optionally, a guiding structure is further included, which is arranged between the second locking structure 4 and the housing and along a direction perpendicular to the first direction, the guiding structure being used to define a moving direction of the second locking structure 4.
Alternatively, the guiding structure includes a guiding groove 44 provided on the first latch body 41 and a guiding member 113 provided in the lower housing 11, and the guiding member 113 extends into the guiding groove 44 and can slide relative to the guiding groove 44, thereby achieving guiding.
Optionally, the handle mechanism 2 includes a handle body 21 and a limiting structure disposed on a first side of the handle body 21, the limiting structure includes a first limiting position and a second limiting position, and the first locking structure 3 includes a second lock body 31 and a limiting portion 32. The limiting part 32 is arranged at the first end of the second lock body 31, and when the handle mechanism 2 moves to the first position along the first direction relative to the shell under the action of external force, the limiting part 32 falls into the first limiting position; when the handle mechanism 2 moves to the second position along the second direction relative to the housing under the action of the external force, the limiting part 32 falls into the second limiting position, so that the limiting effect of the handle structure at the first position and the second position is realized.
Optionally, the first locking structure 3 further comprises a second locking head 33, the second locking head 33 is disposed at a second end of the second lock body 31, and the second locking head 33 can extend out of or retract into the housing through the first locking hole 121.
Optionally, the circuit breaker further comprises a first elastic element 5, the first elastic element 5 is disposed between the first locking structure 3 and the housing, and the first end of the first locking structure 3 can be abutted against the first side surface of the handle mechanism 2 of the circuit breaker under the action of the first elastic element 5, so that the first end of the first locking structure 3 can be always pressed at the first limiting position or the second limiting position, and the handle body 21 is prevented from sliding out of the housing in a state without external force.
Optionally, the first elasticity is a torsion spring, the second lock body 31 is provided with a locking slot hole 311, the upper case is further provided with a limiting member 123 and a limiting post 122, the torsion spring is sleeved on the limiting post 122, one end of the torsion spring is inserted into the locking slot hole 311, and the other end of the torsion spring abuts against the limiting member 123, so that the limiting portion 32 can be always pressed tightly at the first limiting position or the second limiting position under the torsion force of the torsion spring.
Optionally, the handle mechanism further comprises a second elastic part 8, the second elastic part 8 is arranged between the handle body 21 and the housing, and the handle body 21 can have a tendency to move along the second direction under the action of the second elastic part 8, so as to further press the first end of the first locking structure 3 at the first limit position or the second limit position, thereby improving the stable control of the position adjustment of the handle mechanism 2.
Optionally, the second elastic element 8 is a tension spring, and the lower housing 11 is further provided with a second locking element 114, one end of the tension spring is connected to the handle body 21, and the other end of the tension spring is connected to the second locking element 114, so that the handle mechanism 2 always has a tendency to move along the second direction.
Optionally, the first locking structure 3 further includes a connecting member 34, and the connecting member 34 is disposed between the second lock body 31 and the position-limiting portion 32, so that the position-limiting portion 32 can move back and forth between the first position-limiting position and the second position-limiting position after crossing over the handle body 21.
The handle mechanism 2 can be driven by hand or by a motor gear mechanism 9 in the shell and a circuit board which is in communication connection with the motor gear mechanism 9, and local and remote control can be carried out. And carrying out real-time data acquisition, real-time remote fault alarm, maintenance guide, switching-off and switching-on operations.
Optionally, the handle body 21 is further provided with a straight tooth 24, the motor gear mechanism 9 is in meshing transmission connection with the straight tooth 24, and the handle body 21 is connected with the operating mechanism. This is prior art and will not be described herein.
Furthermore, the handle mechanism 2 can be driven by hand or a motor to drive the operating mechanism to act, so that the moving contact system can be switched on and off. In the opening state, the first locking structure 3 extends out of the shell, and the second locking structure 4 retracts into the shell; at the combined floodgate state, first locking structure 3 and second locking structure 4 all stretch out outside the casing, play installation limiting displacement on the one hand, handle mechanism 2 and first locking structure 3, the linkage of second locking structure 4, drive first locking structure 3 through handle mechanism 2, the casing is retracted or stretched out to second locking structure 4, first locking structure 3 is when inserting quick-witted case 7, second tapered end 33 is compressed, can carry out the position detection this moment, reach first only lockhole 121 after, pop out from first only lockhole 121, in order to realize that the installation is spacing. The second locking structure 4 retracts into or extends out of the housing through the second locking hole 111 to realize installation limitation. On the other hand, when the circuit breaker is not installed in place or is completely pulled out of the case, the handle mechanism 2 cannot act on the operating mechanism, so that the contact system cannot be switched on, the mechanical locking of the circuit breaker is realized, the circuit breaker cannot be pulled out of or inserted into the case when the circuit breaker is electrified, and the circuit breaker has an electric shock protection function.
Alternatively, an electronic detection element may be disposed near the first locking structure 3 and the second locking structure 4 for performing position detection and outputting a real-time position signal.
Referring to fig. 3, 4, 8-11, in an embodiment, optionally, the limiting structure includes a first groove 202 and a second groove 201 that are sequentially and alternately arranged along the first direction, a spacing portion 203 is formed between the first groove 202 and the second groove 201, when the handle mechanism 2 moves to the first position along the first direction relative to the housing under the action of an external force, the limiting portion 32 slides into the first groove 202 from the second groove 201 via the spacing portion 203, and the limiting portion 32 is limited in the first groove 202; when the handle mechanism 2 moves to the second position along the second direction relative to the housing under the action of the external force, the position-limiting part 32 slides from the first groove 202 into the second groove 201 via the spacing part 203, and the position-limiting part 32 is limited in the second groove 201.
Optionally, the second groove 201 is sequentially provided with a first abutting side 2011, a first bottom side 2012 and a second abutting side 2013 along the second direction, the first abutting side 2011 is perpendicular to the second direction, and the second abutting side 2013 is inclined in the second direction toward a direction away from the first bottom side 2012.
Optionally, the first groove 202 is sequentially provided with a third abutting side surface 2021, a second bottom side surface 2022 and a fourth abutting side surface 2023 along the second direction, the third abutting side surface 2021 is obliquely arranged toward the second bottom side surface 2022 along the second direction, and the fourth abutting side surface 2023 is arranged perpendicular to the second direction.
Optionally, the limiting portion 32 is sequentially provided with a first limiting side 321, a first guiding inclined surface 322, a first transitional abutting surface 323, a second guiding inclined surface 324 and a second limiting side 325 along a first direction, the first limiting side 321 is perpendicular to the first direction, the first guiding inclined surface 322 and the second abutting side 2013 are inclined in the same direction, and the second guiding inclined surface 324 and the third abutting side 2021 are inclined in the same direction.
Optionally, a first arc surface 2031 is disposed between the second abutment side surface 2013 and the third abutment side surface 2021.
Specifically, when the limiting portion 32 is located in the second groove 201, the second limiting side 325 is attached to the first abutting side 2011, the first transitional abutting surface 323 is attached to the first bottom side 2012, and the first guiding inclined surface 322 is attached to the second abutting side 2013. When the handle mechanism 2 slides along the first direction, the limiting portion 32 slides along the second direction relative to the handle mechanism 2, at this time, the first guide inclined surface 322 slides along the second abutting side surface 2013 until the first guide inclined surface 322 is separated from the second abutting side surface 2013, the first transition abutting surface 323 slides along the first arc surface 2031 until the first transition abutting surface 323 is separated from the first arc surface 2031, the second guide inclined surface 324 slides along the third abutting side surface 2021 until the first transition abutting surface 323 is attached to the second bottom side surface 2022, at this time, the second guide inclined surface 324 is attached to the third abutting side surface 2021 in place, the first limiting side surface 321 is attached to the fourth abutting side surface 2023 in place, at this time, the limiting portion 32 falls into the first groove 202, when the handle mechanism 2 slides along the second direction, the limiting portion 32 slides along the first direction relative to the handle mechanism 2, at this time, the second guide inclined surface 324 slides along the third abutting side surface 2021 until the second guide inclined surface 2021 is separated from the third abutting side surface 2021, the first transition surface 323 falls into the first groove 2033 until the first guide inclined surface 323, at this time, the second guide inclined surface 324 slides along the first abutting surface 2031 until the first bottom side surface 201, until the second guide inclined surface is detached from the first abutting surface 323, and the first bottom side surface 2031, and the second bottom side surface 201 slide.
Referring to fig. 12-17, in another embodiment, optionally, a stopping portion 211 is disposed on the handle body 21, the limiting structure includes a first boss 204, the first boss 204 is sequentially provided with a first guide surface 2041 and a second guide surface 2043 along the second direction, and when the handle mechanism 2 moves to the first position relative to the housing along the first direction, the limiting portion 32 slides from the first guide surface 2041 of the first boss 204 to the second guide surface 2043 of the first boss 204; when the handle mechanism 2 moves to the second position relative to the housing along the second direction, the limiting portion 32 slides down from the second guiding surface 2043 of the first boss 204 to the first guiding surface 2041 of the first boss 204, and the stopping portion 211 abuts against the housing to limit the movement of the handle mechanism 2 along the second direction. Meanwhile, in the process that the handle mechanism 2 moves along the second direction, the pulling force of the elastic restoring member 6 and the second elastic member 8 is gradually reduced, and the handle body 21 also limits the handle mechanism 2 from continuing to move towards the second direction under the friction force of the second inclined surface 43 and the first inclined surface 22.
Optionally, a second arc surface 2042 is disposed between first guide surface 2041 and second guide surface 2043.
Alternatively, the first guide surface 2041 is inclined in the second direction toward the second arc surface 2042, and the second guide surface 2043 is inclined in the second direction away from the second arc surface 2042.
Alternatively, the stopper portion 32 is provided with a third guide surface 301, a third arc surface 302, a second transitional contact surface 303, a fourth arc surface 304, and a fourth guide surface 305 in this order along the first direction, the third guide surface 301 and the first guide surface 2041 incline in the same direction, and the fourth guide surface 305 and the second guide surface 2043 incline in the same direction.
Specifically, when the handle mechanism 2 is located at the second position, the third guide surface 301 is attached to the first guide surface 2041, when the handle mechanism 2 slides in the first direction, the limiting portion 32 slides in the second direction, at this time, the third guide surface 301 slides along the first guide surface 2041 until the third guide surface 301 is separated from the first guide surface 2041, the third arc surface 302 slides along the second arc surface 2042 until the third arc surface 302 is separated from the second arc surface 2042, the second transition abutting surface 303 slides along the second arc surface 2042 until the second transition abutting surface 303 is separated from the second arc surface 2042, the fourth arc surface 304 slides along the second arc surface 2042 until the fourth arc surface 304 is separated from the second arc surface 2042, the fourth guide surface 305 slides along the second guide surface 2043 until the fourth guide surface 305 is attached to the second guide surface 2043, at this time, the handle mechanism 2 is located at the first position, when the handle mechanism 2 slides in the second direction, the limiting portion 32 slides in the first direction, at this time, the fourth guide surface 305 slides in the second guide surface 2043 until the fourth guide surface 305 is separated from the second guide surface 2043, the fourth arc surface 304 slides in the second arc surface 2042 until the fourth arc surface 304 is separated from the second arc surface 2042, the second transition abutting surface 303 slides in the second arc surface 2042 until the second transition abutting surface 303 is separated from the second arc surface 2042, the third arc surface 302 slides in the second arc surface 2042 until the third arc surface 302 is separated from the second arc surface 2042, and the third guide surface 301 slides in the first guide surface 2041 until the third guide surface 301 is attached to the first guide surface 2041, at this time, the handle mechanism 2 is located at the second position.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.
Claims (16)
1. An electric shock preventing structure of a circuit breaker, comprising:
the circuit breaker locking structure comprises a first locking structure (3) arranged in a shell of the circuit breaker, wherein a first end of the first locking structure (3) is abutted against a first side face of a handle mechanism (2) of the circuit breaker, and the first side face is a side face of a second end, far away from the first locking structure (3), of the handle mechanism (2);
the second locking structure (4) is arranged in a shell of the circuit breaker, a first end of the second locking structure (4) is abutted against a second side face of a handle mechanism (2) of the circuit breaker, and the second side face of the handle mechanism (2) is arranged opposite to the first side face of the handle mechanism (2);
when the handle mechanism (2) moves to a first position relative to the housing in a first direction under the action of external force, the handle mechanism (2) drives a contact system of the circuit breaker to be switched on and switched off through an operating mechanism of the circuit breaker, and a second end of the first locking structure (3) and a second end of the second locking structure (4) both extend out of the housing; when the handle mechanism (2) moves to a second position relative to the housing in a second direction under the action of external force, the handle mechanism (2) drives a contact system of the circuit breaker to open and close through an operating mechanism of the circuit breaker, a second end of the first locking structure (3) extends out of the housing, a second end of the second locking structure (4) retracts into the housing, and the first direction is opposite to the second direction;
a first end of the first locking structure (3) is arranged opposite to a second end of the first locking structure (3), and a first end of the second locking structure (4) is arranged opposite to a second end of the second locking structure (4);
handle mechanism (2) include handle body (21) and set up the limit structure of the first side of handle body (21), limit structure includes first limit position and second limit position, first locking structure (3) include:
a second lock body (31);
the limiting part (32) is arranged at the first end of the second lock body (31), and when the handle mechanism (2) moves to a first position relative to the shell along a first direction under the action of external force, the limiting part (32) falls into the first limiting position; when the handle mechanism (2) moves to a second position relative to the shell along a second direction under the action of external force, the limiting part (32) falls into the second limiting position;
the limiting structure comprises a first groove (202) and a second groove (201) which are sequentially arranged along a first direction at intervals, a spacing part (203) is formed between the first groove (202) and the second groove (201), and when the handle mechanism (2) moves to the first position relative to the shell along the first direction under the action of external force, the limiting part (32) slides into the first groove (202) from the second groove (201) through the spacing part (203); when the handle mechanism (2) moves to the second position relative to the shell along the second direction under the action of external force, the limiting part (32) slides into the second groove (201) from the first groove (202) through the spacing part (203);
a stopping portion (211) is arranged on the handle body (21), the limiting structure comprises a first boss (204), the first boss (204) is sequentially provided with a first guide surface (2041) and a second guide surface (2043) along a second direction, and when the handle mechanism (2) moves to a first position relative to the shell along the first direction, the limiting portion (32) slides from the first guide surface (2041) of the first boss (204) to the second guide surface (2043) of the first boss (204); when handle mechanism (2) move to along the second direction relatively the casing when the second position, spacing portion (32) follow second spigot surface (2043) landing of first boss (204) to first spigot surface (2041) of first boss (204), and, backstop portion (211) with the casing butt is in order to restrict handle mechanism (2) are followed the second direction moves.
2. The electric shock preventing structure of a circuit breaker according to claim 1, wherein the handle mechanism (2) includes a handle body (21) and a first inclined surface (22) provided at a second side surface of the handle body (21), the first inclined surface (22) being inclined in a first direction toward a direction close to the handle body (21), the second locking structure (4) includes:
a first lock body (41) that abuts against the first inclined surface (22);
and the first lock head (42) is arranged at one end of the first lock body (41) far away from the handle body (21).
3. The electric shock protection structure of a circuit breaker according to claim 2, wherein the second locking structure (4) further comprises a second inclined surface (43), and the second inclined surface (43) is disposed at an end of the first lock body (41) facing the handle mechanism (2) and abuts against the first inclined surface (22).
4. The electric shock preventing structure of a circuit breaker according to claim 2, wherein the second locking structure (4) further comprises an elastic reset member (6), one end of the elastic reset member (6) is connected to the first lock body (41), the other end is connected to the housing, when the handle mechanism (2) moves to the second position relative to the housing under the action of external force, the first lock body (41) is reset under the restoring force of the elastic reset member (6), and the first lock head (42) retracts into the housing.
5. The electric shock protection structure of a circuit breaker according to claim 1, further comprising a guide structure provided between said second locking structure (4) and said housing and in a direction perpendicular to said first direction, said guide structure being adapted to define a direction of movement of said second locking structure (4).
6. The electric shock protection structure of a circuit breaker according to any one of claims 1-5, further comprising a first elastic member (5), wherein the first elastic member (5) is disposed between the first locking structure (3) and the housing, and a first end of the first locking structure (3) can be pressed against a first side surface of the handle mechanism (2) of the circuit breaker under the action of the first elastic member (5).
7. The electric shock protection structure of a circuit breaker according to claim 6, characterized in that it further comprises a second elastic element (8), said second elastic element (8) being arranged between said handle body (21) and said housing, said handle body (21) being able to have a tendency to move in said second direction under the action of said second elastic element (8).
8. The electric shock preventing structure of a circuit breaker according to claim 7, wherein the second groove (201) is provided with a first abutting side surface (2011), a first bottom side surface (2012) and a second abutting side surface (2013) in sequence along the second direction, the first abutting side surface (2011) is arranged perpendicular to the second direction, and the second abutting side surface (2013) is arranged obliquely along the second direction in a direction away from the first bottom side surface (2012).
9. The electric shock protection structure of a circuit breaker according to claim 8, wherein the first groove (202) is provided with a third abutting side surface (2021), a second bottom side surface (2022) and a fourth abutting side surface (2023) in sequence along the second direction, the third abutting side surface (2021) is disposed obliquely in the second direction toward the second bottom side surface (2022), and the fourth abutting side surface (2023) is disposed perpendicularly to the second direction.
10. The electric shock preventing structure of a circuit breaker according to claim 9, wherein a first limit side (321), a first guide inclined surface (322), a first transition abutting surface (323), a second guide inclined surface (324), and a second limit side (325) are sequentially disposed on the limit portion (32) along the first direction, the first limit side (321) is disposed perpendicular to the first direction, the first guide inclined surface (322) and the second abutting side (2013) have the same inclination direction, and the second guide inclined surface (324) and the third abutting side (2021) have the same inclination direction.
11. The electric shock preventing structure of a circuit breaker according to claim 10, wherein a first arc surface (2031) is provided between the second abutting side surface (2013) and the third abutting side surface (2021).
12. The electric shock preventing structure of a circuit breaker according to claim 11, wherein a second arc surface (2042) is provided between the first guide surface (2041) and the second guide surface (2043).
13. The electric shock preventing structure of a circuit breaker according to claim 12, wherein the first guide surface (2041) is inclined in a second direction toward the second arc surface (2042), and the second guide surface (2043) is inclined in a second direction away from the second arc surface (2042).
14. The structure of claim 13, wherein the stopper portion (32) has a third guide surface (301), a third arc surface (302), a second transitional contact surface (303), a fourth arc surface (304), and a fourth guide surface (305) sequentially arranged along a first direction, the third guide surface (301) has the same inclination direction as the first guide surface (2041), and the fourth guide surface (305) has the same inclination direction as the second guide surface (2043).
15. A circuit breaker, comprising a housing and a handle mechanism (2) extending into the housing, characterized in that the circuit breaker further comprises the electric shock protection structure of any one of claims 1 to 14, wherein the housing is provided with a first locking hole (121) and a second locking hole (111), the second end of the first locking structure (3) passes through the first locking hole (121) and extends out of the housing, and the second end of the second locking structure (4) passes through the second locking hole (111) and extends out of the housing.
16. A power distributor, comprising a case (7), and characterized by further comprising the circuit breaker of claim 15, wherein the case (7) is provided with a first opening (101) corresponding to a first locking hole (121) and a second opening (102) corresponding to a second locking hole (111), a second end of the first locking structure (3) sequentially passes through the first locking hole (121) and the first opening (101) and extends out of the housing, and a second end of the second locking structure (4) sequentially passes through the second locking hole (111) and the second opening (102) and extends out of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210874969.6A CN115101387B (en) | 2022-07-25 | 2022-07-25 | Electric shock prevention structure of circuit breaker, circuit breaker and distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210874969.6A CN115101387B (en) | 2022-07-25 | 2022-07-25 | Electric shock prevention structure of circuit breaker, circuit breaker and distributor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115101387A CN115101387A (en) | 2022-09-23 |
| CN115101387B true CN115101387B (en) | 2022-11-01 |
Family
ID=83298825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210874969.6A Active CN115101387B (en) | 2022-07-25 | 2022-07-25 | Electric shock prevention structure of circuit breaker, circuit breaker and distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115101387B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116190167B (en) * | 2023-05-04 | 2023-07-07 | 深圳市脉联电子有限公司 | Electric shock prevention structure and circuit breaker thereof |
| CN116230460B (en) * | 2023-05-06 | 2023-07-07 | 广东米勒电气有限公司 | Quick automatic closing mechanism of circuit breaker and circuit breaker provided with same |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007325380A (en) * | 2006-05-31 | 2007-12-13 | Chugoku Electric Power Co Inc:The | System for protecting power system |
| DE102007000581A1 (en) * | 2007-10-26 | 2009-04-30 | Robert Bosch Gmbh | Pressure switch, in particular for hand-held machine tools |
| JP2010040325A (en) * | 2008-08-05 | 2010-02-18 | Fuji Electric Fa Components & Systems Co Ltd | Handle lock device of circuit breaker unit |
| DE102011082255A1 (en) * | 2011-09-07 | 2013-03-07 | Siemens Aktiengesellschaft | Locking device for an electromechanical switching device with manual operation |
| CN203707046U (en) * | 2013-11-20 | 2014-07-09 | 德力西电气有限公司 | Internal locking module of breaker |
| CN104064386A (en) * | 2013-03-22 | 2014-09-24 | 伊顿公司 | Handle with safe locking device and circuit breaker comprising the handle |
| CN107527760A (en) * | 2016-06-21 | 2017-12-29 | 浙江正泰电器股份有限公司 | The locking device of breaker |
| CN210489560U (en) * | 2019-10-21 | 2020-05-08 | 上海良信电器股份有限公司 | Circuit breaker with anti-electric-shock function |
| CN111446137A (en) * | 2020-04-28 | 2020-07-24 | 浙江合兴电工有限公司 | Operating mechanism of leakage protection device |
| CN211628928U (en) * | 2020-04-30 | 2020-10-02 | 浙江天正电气股份有限公司 | Locking structure and circuit breaker with same |
| CN112768309A (en) * | 2019-10-21 | 2021-05-07 | 上海良信电器股份有限公司 | Circuit breaker with anti-electric-shock function |
| CN214848440U (en) * | 2021-04-06 | 2021-11-23 | 上海良信电器股份有限公司 | Circuit breaker locking mechanical system and circuit breaker |
| CN113838713A (en) * | 2021-09-09 | 2021-12-24 | 深圳市脉联电子有限公司 | Circuit breaker |
-
2022
- 2022-07-25 CN CN202210874969.6A patent/CN115101387B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007325380A (en) * | 2006-05-31 | 2007-12-13 | Chugoku Electric Power Co Inc:The | System for protecting power system |
| DE102007000581A1 (en) * | 2007-10-26 | 2009-04-30 | Robert Bosch Gmbh | Pressure switch, in particular for hand-held machine tools |
| JP2010040325A (en) * | 2008-08-05 | 2010-02-18 | Fuji Electric Fa Components & Systems Co Ltd | Handle lock device of circuit breaker unit |
| DE102011082255A1 (en) * | 2011-09-07 | 2013-03-07 | Siemens Aktiengesellschaft | Locking device for an electromechanical switching device with manual operation |
| CN104064386A (en) * | 2013-03-22 | 2014-09-24 | 伊顿公司 | Handle with safe locking device and circuit breaker comprising the handle |
| CN203707046U (en) * | 2013-11-20 | 2014-07-09 | 德力西电气有限公司 | Internal locking module of breaker |
| CN107527760A (en) * | 2016-06-21 | 2017-12-29 | 浙江正泰电器股份有限公司 | The locking device of breaker |
| CN210489560U (en) * | 2019-10-21 | 2020-05-08 | 上海良信电器股份有限公司 | Circuit breaker with anti-electric-shock function |
| CN112768309A (en) * | 2019-10-21 | 2021-05-07 | 上海良信电器股份有限公司 | Circuit breaker with anti-electric-shock function |
| CN111446137A (en) * | 2020-04-28 | 2020-07-24 | 浙江合兴电工有限公司 | Operating mechanism of leakage protection device |
| CN211628928U (en) * | 2020-04-30 | 2020-10-02 | 浙江天正电气股份有限公司 | Locking structure and circuit breaker with same |
| CN214848440U (en) * | 2021-04-06 | 2021-11-23 | 上海良信电器股份有限公司 | Circuit breaker locking mechanical system and circuit breaker |
| CN113838713A (en) * | 2021-09-09 | 2021-12-24 | 深圳市脉联电子有限公司 | Circuit breaker |
Non-Patent Citations (1)
| Title |
|---|
| 塑壳断路器外部安装方式的应用;冯关水;《电工电气》;20160815(第08期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115101387A (en) | 2022-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115101387B (en) | Electric shock prevention structure of circuit breaker, circuit breaker and distributor | |
| CN110400727A (en) | Breaker | |
| CN112420419A (en) | Jack box with linkage locking function | |
| CN201307531Y (en) | Five-prevention blocking device of switchgear | |
| CN210692391U (en) | Circuit breaker with anti-misoperation closing device | |
| CN212517095U (en) | Locking device and circuit breaker | |
| CN112151332A (en) | Clutch device, operating mechanism and circuit breaker | |
| CN107887198B (en) | Interlocking device for door body of switch cabinet | |
| CN112349529A (en) | Misoperation prevention interlocking device for drawer unit of low-voltage cabinet electric-operated switch | |
| CN109273302B (en) | Electric operating mechanism of circuit breaker | |
| CN218351318U (en) | Locking structure and circuit breaker of circuit breaker | |
| CN217507140U (en) | Interlocking mechanism for rear door and grounding switch of switch cabinet | |
| CN213025885U (en) | 10kV cubical switchboard ground connection plug-in strip unlocking device | |
| CN2840293Y (en) | Mechanical linking device between isolating switch and fixed breaker | |
| CN108899243B (en) | Interlocking mechanism and high-voltage switch equipment | |
| CN111900053A (en) | Earth leakage protection actuating mechanism and splicing type circuit breaker | |
| CN112820595A (en) | Double-lock plug-in circuit breaker capable of preventing switching-on and plugging-out | |
| CN215680434U (en) | Safety AC/DC auxiliary switch | |
| KR100463609B1 (en) | interlock device of breaker and door in switch board | |
| CN217388021U (en) | Combined hand pulling mechanism | |
| CN213583617U (en) | High-voltage isolating switch for power distribution cabinet | |
| CN219642768U (en) | Tripping device and circuit breaker | |
| CN213816030U (en) | Operating device and circuit breaker | |
| CN219418832U (en) | Positioning mechanism | |
| CN217114282U (en) | Locking assembly of electric operating mechanism |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |