CN-122025481-A - Leakage circuit breaker

CN122025481ACN 122025481 ACN122025481 ACN 122025481ACN-122025481-A

Abstract

The application discloses an electric leakage breaker which comprises a shell, an indicator, an actuator with a spring component, an operating mechanism, a reset structure and an electric leakage indication function, wherein the actuator is provided with a closing state and a separating brake state, the actuator is driven to be converted from a second state to a first state and kept when the operating mechanism is converted to the closing state, otherwise, the holding of the actuator is released, the electric leakage release pushes the indicator to be separated from a first position and is driven to unlock through the indicator when the electric leakage release is actuated, the operating mechanism is converted to the separating brake state after unlocking, the holding of the actuator is released and is converted to the second state, the indicator separated from the first position is driven to reach the second position and is kept, the reset structure is matched with the indicator, and when the indicator is removed or weakened by the force of the actuator, the reset structure drives the indicator to be restored to the first position.

Inventors

REN CHANGBIN
JIN GUI
ZHAO MING
HUANG FEI
WANG LINGFENG
LI HAILI

Assignees

浙江天正电气股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260330

Claims (10)

1. A leakage breaker is characterized by comprising, A shell provided with an observation window; the indicator is provided with a first position and a second position, and different indications are presented in the observation window when the indicator is at different positions; An actuator having a spring member having a first state and a second state, the first state having a higher energy than the second state; The actuator is driven to be converted into a first state from a second state and kept, and otherwise, the maintenance of the actuator is released; The electric leakage release pushes the indicating piece to be separated from the first position when being actuated and drives the operating mechanism to be unlocked through the indicating piece, the operating mechanism is converted to a brake separating state after being unlocked, the holding of the actuator is released and converted to a second state, and the indicating piece which is separated from the first position is driven to reach the second position and be held; And the reset structure is used for being matched with the indicator, and when the indicator is eliminated or weakened by the force of the actuator, the reset structure drives the indicator to return to the first position.
2. The earth leakage breaker according to claim 1, characterized in that: The actuator further comprises an actuating rod, an operating mechanism and an indicating piece, wherein the actuating rod is a rigid member and is connected with the spring member, the actuating rod moves in a sliding or rotating mode and has a restoring position corresponding to the first state and an actuating position corresponding to the second state; Alternatively, the actuator is a pure spring member.
3. The leakage breaker according to claim 1, wherein the movement trace of the actuator is free from intersection with the indicator in the first position when the operating mechanism is not shifted to the open state by actuation of the leakage release; Or when the operating mechanism is not changed into a brake-separating state due to the actuation of the electric leakage release, the acting force generated by the actuator on the indicator positioned at the first position has no component force in the moving direction of the indicator; Or when the operating mechanism is not changed into a brake-separating state due to the actuation of the electric leakage release, the component force of the acting force of the actuator on the indicator at the first position in the moving direction of the indicator is smaller than the reaction force of the reset structure.
4. The leakage breaker according to claim 1, wherein the indicator is provided with a driven part and an actuating part, the driven part is driven by the leakage tripping device, the actuating part is used for driving the operating mechanism to unlock, the leakage tripping device is provided with a first framework and an actuating part, the actuating part is arranged in the first framework in a sliding manner, when the indicator is in the first position, the driven part is at least partially positioned in the first framework and corresponds to the actuating part, and the actuating part is always positioned outside the first framework.
5. The leakage breaker according to claim 4, wherein the driven part of the indicator is of a columnar structure, and the driven part is smaller than the opening of the first frame; And/or the indicating piece is rotatably arranged, the indicating piece further comprises a driven part, and the actuator acts on the driven part to enable the indicating piece to reach the second position and be kept, wherein the force arm of the driven part is larger than that of the driven part.
6. A residual-current circuit breaker according to claim 1, characterized in that the operating mechanism comprises a contact support with a holder extending towards the actuator, by means of which the operating mechanism effects actuation and retention of the actuator; or, the operating mechanism comprises a contact support, the actuator is provided with a retainer extending towards the contact support, and the operating mechanism drives and retains the actuator through the retainer; Or the operating mechanism comprises a moving contact, the moving contact is provided with a retainer extending towards the actuator, the operating mechanism drives and retains the actuator through the retainer, and at least one contact surface between the retainer and the actuator is made of an insulating material or any contact surface of the retainer and the actuator is covered with the insulating material; Or the operating mechanism comprises a moving contact, the actuator is provided with a retainer extending towards the moving contact, the operating mechanism drives and retains the actuator through the retainer, and the retainer is made of an insulating material or an insulating material is coated on the contact surface of any one of the retainer and the moving contact.
7. A leakage breaker according to claim 1, wherein the return structure is a spring member connected to the indicator member, the spring member storing energy and providing a biasing force for the indicator member to transition to the first position when the indicator member is held in the second position by the actuator, the biasing force being less than the holding force of the actuator; or, the reset structure is arranged on the operating mechanism, and when the operating mechanism changes to a closing state, the operating mechanism drives the indicating piece to restore to the first position.
8. The leakage breaker of claim 1, wherein a neutral electrode space and at least one L electrode space are arranged in a shell, the neutral electrode space is located at one side of the L electrode space in a first direction, one L electrode space is a first L electrode space, the indicator, the actuator, the operating mechanism, the leakage release and the reset structure are all located in the first L electrode space, the operating mechanism is a first L electrode operating mechanism, the first L electrode space is further internally provided with an L electrode electromagnetic release and an L electrode arc-extinguishing chamber, the L electrode electromagnetic release is located right above the L electrode arc-extinguishing chamber in a second direction, the leakage release is located right above the L electrode electromagnetic release, the leakage release and the L electrode electromagnetic release are solenoid electromagnets, actuating parts of the leakage release and actuating parts of the L electrode electromagnetic release are arranged in parallel, the volume of the leakage release is smaller than that of the L electrode electromagnetic release, and the first direction is perpendicular to the second direction.
9. The leakage circuit breaker of claim 1, wherein the housing is provided with a neutral pole space and at least one L pole space, wherein the neutral pole space is positioned at least on one side of the one L pole space in the first direction; the indicator, the actuator, the operating mechanism, the leakage release and the reset structure are all located in the neutral pole space or the first L pole space, and the operating mechanism is a neutral pole operating mechanism or an L pole operating mechanism.
10. The residual current circuit breaker according to claim 9, wherein a neutral pole overload release or/and a neutral pole electromagnetic release is/are arranged in the neutral pole space; the leakage current on-off circuit is provided with an on-off switch, and the on-off switch is arranged in the first L pole space and partially exposed outside the shell.

Description

Leakage circuit breaker Technical Field The application relates to the field of circuit breakers, in particular to an electric leakage circuit breaker. Background The miniature leakage circuit breaker can be used for overload, short circuit and leakage protection of a circuit, and has a relatively mature structure. The current electric leakage circuit breaker, its electric leakage indication structure basically all can set up one set of electric leakage indication structure, and common electric leakage indication structure adopts the mode that is, electric leakage release, electric leakage indicator spring, electric leakage hasp. Under the conventional state, the leakage indicator and the leakage lock catch form locking, the leakage indicator spring is in an energy storage state, and the leakage spring is in the energy storage state. When electricity leakage occurs, the electricity leakage release pushes the electricity leakage lock catch to unlock, and the electricity leakage indication spring releases energy to drive the electricity leakage indication piece to rotate, so that electricity leakage fault indication is realized. When the electric leakage circuit breaker needs to be recovered, the operating mechanism of the electric leakage circuit breaker is controlled again, and the operating mechanism drives the electric leakage indicating piece to rotate, so that the electric leakage indicating piece and the electric leakage lock catch are locked again, and the electric leakage indicating spring is recovered to an energy storage state again. Such as CN210272220U, CN115050612a, the principle used is such a structure, although the specific structure varies. In theory, the above structure is relatively easy to realize, but the precision requirement on the parts is relatively high, especially, the precision requirement on the locking position of the leakage lock catch and the leakage indicator is relatively high, and too large or too small dimensional tolerance can cause that the leakage indicator cannot be realized because the leakage lock catch and the leakage indicator cannot be effectively locked. Disclosure of Invention In view of the above, the present application aims to overcome the defects in the prior art, and aims to provide an electric leakage breaker. The application provides an electric leakage breaker, which comprises, A shell provided with an observation window; the indicator is provided with a first position and a second position, and different indications are presented in the observation window when the indicator is at different positions; An actuator having a spring member having a first state and a second state, the first state having a higher energy than the second state; The actuator is driven to be converted into a first state from a second state and kept, and otherwise, the maintenance of the actuator is released; The electric leakage release pushes the indicating piece to be separated from the first position when being actuated and drives the operating mechanism to be unlocked through the indicating piece, the operating mechanism is converted to a brake separating state after being unlocked, the holding of the actuator is released and converted to a second state, and the indicating piece which is separated from the first position is driven to reach the second position and be held; And the reset structure is used for being matched with the indicator, and when the indicator is eliminated or weakened by the force of the actuator, the reset structure drives the indicator to return to the first position. In some embodiments of the application, the actuator lever is a rigid member, the actuator lever is coupled to a spring member, the actuator lever is in the form of a slide or a turn, the actuator lever has a reset position corresponding to the first state and an actuated position corresponding to the second state, the operating mechanism effects actuation and retention of the actuator by acting on the actuator lever, and the actuator effects actuation and retention of the indicator by the actuator lever. In some embodiments of the application, the actuator is a pure spring member. In some embodiments of the application, the movement trace of the actuator is free from intersection with the indicator in the first position when the operating mechanism is not transitioned to the open state by actuation of the electrical leakage release. In some embodiments of the present application, when the operating mechanism is not changed to the open state by actuation of the electrical leakage release, the force generated by the actuator on the indicator in the first position has no component in the direction of movement of the indicator. In some embodiments of the present application, when the operating mechanism is not changed to the open state by actuation of the electrical leakage release, a component of the force generated by the actuator on the indicator in the first position in the direction of mo