CN-122025483-A - Release resetting mechanism and electric operating module of circuit breaker

CN122025483ACN 122025483 ACN122025483 ACN 122025483ACN-122025483-A

Abstract

The application discloses a release resetting mechanism and an electric operating module of a circuit breaker, which comprises the electric operating mechanism, a motor, a transmission member at least part of which is provided with elasticity, and a release with a permanent magnet, wherein the release comprises a resetting state and an actuating state, the actuating state is kept after actuation, the actuating part is positioned at one side of the second end part rotating towards the resetting direction, the driving member is provided with a first position, the first end part is positioned in a track of the driving member rotating along the first direction when the driving member is positioned at the first position, the driving member pushes the first end part to enable the transmission member to rotate along the resetting direction after rotating along the first direction, the second end part pushes the actuated actuating part to reset, and at least part of the first end part is still positioned in the track of the driving member rotating along the first direction after resetting.

Inventors

PU CHAOHONG
YANG FAN
HUANG FEI
JIN GUI
WANG LINGFENG
HU JIANSHUAI
LI HAILI

Assignees

浙江天正电气股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260205
Priority Date: 20260203

Claims (11)

1. The utility model provides a release canceling release mechanical system which characterized in that: The electric operating mechanism comprises a driving gear and a driving member which are rotatably arranged, wherein the driving member is in transmission connection with the driving gear, and the driving member is driven by the driving gear to rotate; when the motor runs along the first running direction, the driving gear drives the driving member to rotate along the first direction; The transmission member comprises a first end part and a second end part, and the two end parts at least present flexible transmission because of elasticity when the transmission member rotates towards a resetting direction; The release with the permanent magnet comprises a reset state and an actuation state, the release is kept in the actuation state after actuation, and the actuation part is positioned at one side of the second end part rotating towards the reset direction; The driving member has a first position in which the first end is in a track of rotation of the driving member in a first direction, after the driving member rotates in the first direction, the driving member pushes the first end to rotate the transmission member in a reset direction, and the second end pushes the actuated actuating component to reset, after reset, at least part of the first end is still in the track of rotation of the driving member in the first direction.
2. The release resetting mechanism of claim 1, wherein: the first end part and the second end part are one rigid member and the other elastic member, the rigid member is arranged in a rotating way around the first axis, and the elastic member is connected with the rigid member; Or the transmission component is an integrated elastic piece and is rotationally arranged around the first axis, and the first end part and the second end part are two end parts of the elastic piece; or, still include first tip, second tip and elastic component, first tip, second tip are the rigid component and all are the rotation setting around the first axis, and first tip and second tip link to each other through the elastic component when the transmission component rotates to reset direction at least.
3. The release resetting mechanism as recited in claim 1, wherein the driving member is disposed on the driving gear and both are disposed in a synchronous rotation about a same rotation center; or the driving component is independent of the driving gear, and the rotation centers of the driving component and the driving gear are arranged in parallel.
4. An electric operating module of a circuit breaker is characterized by comprising The splicing needle is associated with an operating mechanism of the idle opening module; further comprising a trip reset mechanism according to any one of claims 1-3; upon actuation of the release, the actuation member causes movement of the assembly needle.
5. The electrical operation module of a circuit breaker as recited in claim 4, further comprising a control assembly for controlling operation of the motor, wherein the control assembly drives the motor to operate in a first direction of operation after receiving the first signal, and wherein the control assembly drives the motor to operate in a second direction of operation after the actuation member is reset until the drive member is rotated to the first position, and wherein the control assembly controls the motor to stop.
6. The electrically operated module of a circuit breaker as set forth in claim 4 wherein the drive member has a second position, the motor continues to operate in the first direction of travel after the actuating member is reset, the drive member pushing the first end to displace the first end until the first end is resiliently displaced after the drive member has passed, the motor stopping operation after the drive member reaches the second position; Or the motor runs along the first running direction, drives the driving member to rotate from the first position to the second position, and drives the first end part to generate displacement until the first end part eliminates the displacement under the elastic action after the driving member passes by, and the motor stops running after the driving member reaches the second position.
7. The circuit breaker electrical operation module of claim 4 wherein the assembly pin is disposed on a side of the second end in a rotational direction opposite the reset direction, and wherein upon actuation the actuation member of the trip device causes movement of the assembly pin by pushing the second end in rotation.
8. The circuit breaker electric operation module according to claim 7, wherein the electric operation mechanism further comprises a brake separating piece which is arranged in a rotating mode, when the motor runs in the second running direction, the brake separating piece rotates and pushes the first end portion to enable the transmission member to rotate, the second end portion pushes the assembling needle to move, and the direction of rotation of the transmission member due to the brake separating piece is opposite to the reset direction.
9. The electrically operated module of a circuit breaker as set forth in claim 7 wherein said breaking member and said driving member are different surfaces of the same component, the direction of rotation of said component being exactly opposite when said motor is operated in a first direction of operation and in a second direction of operation; or, the brake separating piece and the driving component are arranged on the driving gear at intervals, and when the motor runs along the first running direction and the second running direction, the rotation directions of the driving gear are opposite; Or the brake separating piece is arranged on another gear except the driving gear of the electric operating mechanism, and the rotation center of the brake separating piece and the rotation center of the driving member are arranged in parallel.
10. The electric operating module of the circuit breaker according to claim 6, further comprising a handle gear rotatably arranged, a linkage piece rotatably arranged and a reset spring, wherein the linkage piece is in linkage arrangement with a handle of the operating mechanism, the handle gear comprises an initial position and a closing position, the handle gear and the linkage piece form a transmission relation in a moving direction from the initial position to the closing position, the electric operating mechanism further comprises a first fan-shaped tooth part rotatably arranged, when the motor runs in a first running direction, the first fan-shaped tooth part gradually moves to be meshed with the handle gear at the initial position, the handle gear is driven to rotate towards the closing position after the meshing time point is after the driving member completely passes over the first end part, the reset spring is connected with the handle gear, and the first fan-shaped tooth part is disengaged from the handle gear after the handle gear reaches the closing position, and the handle gear is restored to the initial position under the action of the reset spring.
11. The circuit breaker electrical operation module according to claim 10, wherein the first sector gear is arranged on the driving gear and is rotatably arranged around the same rotation center as the driving gear; Or the first sector gear part is arranged on another gear except the driving gear, and the rotation center of the first sector gear part and the rotation center of the driving gear are arranged in parallel.

Description

Release resetting mechanism and electric operating module of circuit breaker Technical Field The application relates to the field of low-voltage electricity, in particular to a reset mechanism of a release. Background The miniature reclosing circuit breaker comprises an electric operation module and an idle opening module. The air switch module comprises an operating mechanism, a moving contact, a fixed contact and the like, and the opening and closing of the moving contact and the fixed contact can be driven by the operation of the operating mechanism. The electric operation module often comprises an electric operation module, and the electric operation module is associated with an operation mechanism of the idle opening module, so that the functions of electric closing, electric opening and the like are realized. At present, for the miniature reclosing circuit breaker, the number of the types of the electric operation module with the release is relatively small, and the first type is only two types, namely, the type with the common release (not containing a permanent magnet), taking CN219393294U as an example, and the electric leakage release is actuated when electric leakage occurs to complete the electric leakage release function. The actuating state of the release is not steady, so that when the leakage coil loses electricity, as in the patent, a small torsion spring can drive the release to reversely push the ejector rod of the release, so that the release is reset. The release is a common leakage release, the release speed is relatively low, and the release force is relatively small. The second, in the form of a permanent magnet trip, is CN215069845U for example, which is an electromagnetic trip with permanent magnets, having two relatively stable states. The spring inside the permanent magnet and the movable iron core is in a compressed state when the permanent magnet and the movable iron core are attracted (the first stable state is also called a reset state). After the coil is electrified, the attraction force of the permanent magnet on the movable iron core is counteracted, the spring can quickly release the movable iron core to be separated from the permanent magnet, the actuation action is completed, and the movable iron core is kept in an actuation state (second stable state) due to the existence of the spring after actuation. The tripping device has the advantages of very high actuating speed and very high tripping force, but has the defect of being incapable of resetting by itself. Therefore, as described in the patent, the gear and the multi-link transmission are needed, and finally the transmission is transmitted to the movable iron core, so that the movable iron core moves towards the permanent magnet, and the movable iron core can be attracted by the permanent magnet to complete the reset action. For the second structure, the connecting rod transmission and the gear transmission in the mechanical transmission structure belong to rigid transmission, so that the constraint is relatively dead. If some machining errors or component wear exist (such as machining errors of a connecting rod transmission or machining errors of an electromagnetic release or weakening of a magnetic field of a permanent magnet, etc.), the restrained mechanical transmission structure does not have 'compensation' capability, which can cause insufficient resetting stroke (the movable iron core can not reach the attraction range of the permanent magnet), and finally the electromagnetic release cannot complete resetting action. Therefore, how to redesign a trip device resetting mechanism that can be optimized becomes a considerable problem. Disclosure of Invention In view of the above, the present application aims to overcome the defects in the prior art, and aims to provide a release resetting mechanism and an electric operating module of a circuit breaker. The application provides a release resetting mechanism, wherein, The electric operating mechanism comprises a driving gear and a driving member which are rotatably arranged, wherein the driving member is in transmission connection with the driving gear, and the driving member is driven by the driving gear to rotate; when the motor runs along the first running direction, the driving gear drives the driving member to rotate along the first direction; The transmission member comprises a first end part and a second end part, and the two end parts at least present flexible transmission because of elasticity when the transmission member rotates towards a resetting direction; The release with the permanent magnet comprises a reset state and an actuation state, the release is kept in the actuation state after actuation, and the actuation part is positioned at one side of the second end part rotating towards the reset direction; The driving member has a first position in which the first end is in a track of rotation of the driving member in a first direction, after the drivi