CN-224232623-U - Shunt assembly universal for circuit breaker

Abstract

The utility model discloses a general shunt assembly for a circuit breaker, which realizes the on-demand configuration of functions of the shunt assembly through the detachable design of an auxiliary cover body and an external micro switch, can quickly detach the auxiliary cover body and the external micro switch when the circuit breaker only needs a shunt tripping function, simplifies the structure, can quickly install the shunt tripping assembly when the shunt tripping auxiliary function is needed, meets diversified requirements, realizes the functional integration of the shunt tripping assembly and the shunt auxiliary assembly, enables core components such as a base, an upper bracket and the like to share a die, obviously reduces the number of the die and the development cost, simplifies the assembly process by the modularized design, reduces the conversion time and the cost in production links, and improves the production efficiency.

Inventors

• Ni Zekai
• CHEN JIAN
• GAO HAILIANG

Assignees

• 浙江阿尔斯通电气有限公司

Dates

Publication Date

20260512

Application Date

20250603

Claims (10)

1. 1. The utility model provides a general shunt assembly for circuit breaker, includes the base and connects upper bracket on the base, the base with be equipped with the assembly inner chamber between the upper bracket, be equipped with solenoid subassembly, shunt ejector pin and built-in micro-gap switch in the assembly inner chamber, shunt ejector pin with solenoid subassembly linkage is connected, its characterized in that, the side of base can be dismantled and is connected with the auxiliary lid, be connected with external micro-gap switch in the auxiliary lid, be equipped with connecting axle and swing joint on the upper bracket and be in auxiliary ejector pin on the connecting axle, auxiliary ejector pin includes pivot portion, first linkage portion, second linkage portion and action portion, pivot portion connects on the connecting axle, first linkage portion be located the opening part of assembly inner chamber and with built-in micro-gap switch linkage is connected, second linkage portion extends to the side of base and with external micro-gap switch linkage is connected, action portion is connected with the pivot linkage of circuit breaker.
2. 2. The shunt assembly for a circuit breaker according to claim 1, wherein the middle portion of the upper bracket extends in the direction of the opening to form a bracket mounting portion, and the connecting shaft is located at a side surface of the bracket mounting portion.
3. 3. The shunt assembly for a circuit breaker according to claim 2, wherein a bracket positioning column is arranged at a position of the upper bracket facing the assembly cavity, a built-in positioning hole is formed in the built-in micro switch, the bracket positioning column is connected in the built-in positioning hole, and the built-in micro switch is fixed between the base and the upper bracket.
4. 4. The shunt assembly for a circuit breaker according to claim 3, wherein the first linkage portion is located opposite to the trigger portion of the built-in micro switch and is a first flat end surface.
5. 5. The shunt assembly for a circuit breaker according to claim 1, wherein a base connecting hole is formed in a side surface of the base, an external positioning hole is formed in the external micro switch, a cover positioning column and a cover connecting column are respectively arranged in the auxiliary cover body, the cover positioning column is connected in the external positioning hole, and the cover connecting column is connected in the base connecting hole.
6. 6. The shunt assembly for a circuit breaker according to claim 5, wherein a fixing cavity is formed in the auxiliary cover body, the external micro-switch is connected in the fixing cavity, a cover body notch is formed in one side of the auxiliary cover body, a triggering part of the external micro-switch is opposite to the cover body notch, and the cover body positioning column is located between the cover body connecting column and the cover body notch.
7. 7. The shunt assembly for a circuit breaker according to claim 6, wherein the second linkage portion is located opposite the trigger portion of the external micro-switch at a second planar end surface.
8. 8. The shunt excitation assembly for a circuit breaker according to any one of claims 1 to 7, wherein the electromagnetic coil assembly comprises a coil bracket, a coil framework, a static iron core and a movable iron core which are fixed on the base, two sides of the coil framework are respectively provided with a hook part and a buckling part, two sides of the upper bracket are respectively provided with a step part and an inclined platform part, the hook part is connected with the step part, the buckling part is connected with the inclined platform part, the static iron core and the movable iron core are respectively connected with two ends of the coil framework, a coil is wound on the coil framework, a shunt excitation rotating shaft is arranged on the coil bracket, the shunt excitation ejector rod comprises a supporting leg part, a matching part and a poking part, the supporting leg part is connected on the shunt excitation rotating shaft, the matching part is connected with the movable iron core, and the poking part is in linkage fit with a traction rod of the circuit breaker.
9. 9. The shunt assembly for a circuit breaker according to claim 8, wherein the base is provided with a yielding port, and the toggle portion extends to the outside of the base through the yielding port.
10. 10. The shunt assembly for a circuit breaker according to any one of claims 1 to 7, wherein an outer end of the connecting shaft is provided with a drop-preventing portion.

Description

Shunt assembly universal for circuit breaker Technical Field The utility model relates to the technical field of breaker accessories, in particular to a shunt assembly universal for a breaker. Background The shunt assembly is commonly referred to in circuit breaker systems as a shunt release and its associated auxiliary features, and mainly includes a shunt release assembly and a shunt auxiliary assembly. The shunt tripping assembly is a device for remotely controlling the opening of the circuit breaker. When an external control signal (usually a voltage signal) is applied to the shunt release, the shunt release drives an operating mechanism of the circuit breaker to trip the circuit breaker, so that the circuit is cut off, and the main purpose is to rapidly cut off the circuit when needed so as to protect equipment and personnel; shunt auxiliary components generally refer to some auxiliary function or component (e.g., auxiliary contacts) that are used in conjunction with the shunt release, the auxiliary contacts generally being in linkage with the action mechanism of the shunt release, and the auxiliary contacts changing state (normally open contacts closed, normally closed contacts open) accordingly when the shunt release is actuated to shunt the circuit breaker, thereby signaling an external circuit or control system. Although the shunt tripping assembly and the shunt auxiliary assembly have partial commonality, the structures of the shunt tripping assembly and the shunt auxiliary assembly on the existing circuit breaker are not the same, so that two different sets of injection molds are required to be designed for production respectively from the production perspective, and the circuit breaker has a certain stock pressure from the stock aspect. In view of the foregoing, there is a need to design a shunt assembly for a circuit breaker to improve the versatility of the shunt assembly in the circuit breaker. Disclosure of Invention In order to solve the problems, the utility model provides a shunt excitation assembly commonly used for a circuit breaker, which comprises a base and an upper bracket connected to the base, wherein an assembly cavity is arranged between the base and the upper bracket, an electromagnetic coil assembly, a shunt excitation ejector rod and a built-in micro switch are arranged in the assembly cavity, the shunt excitation ejector rod is connected with the electromagnetic coil assembly in a linkage way, an auxiliary cover body is detachably connected to the side surface of the base, an external micro switch is connected to the auxiliary cover body, a connecting shaft and an auxiliary ejector rod movably connected to the connecting shaft are arranged on the upper bracket, the auxiliary ejector rod comprises a rotating shaft part, a first linkage part, a second linkage part and an action part, the rotating shaft part is connected to the connecting shaft, the first linkage part is positioned at an opening of the assembly cavity and is in linkage connection with the built-in micro switch, and the second linkage part extends to the side surface of the base and is connected with the external micro switch, and the action part is in linkage connection with a rotating shaft of the circuit breaker. The utility model further provides that the middle part of the upper bracket extends along the direction of the opening to form a bracket mounting part, and the connecting shaft is positioned on the side surface of the bracket mounting part. The utility model further provides that a bracket positioning column is arranged at the position of the upper bracket facing the assembly inner cavity, a built-in positioning hole is formed in the built-in micro switch, the bracket positioning column is connected in the built-in positioning hole, and the built-in micro switch is fixed between the base and the upper bracket. The utility model further provides that the position of the first linkage part, which is opposite to the trigger part of the built-in micro switch, is a first flat end surface. The utility model is further characterized in that a base connecting hole is formed in the side face of the base, an external positioning hole is formed in the external micro switch, a cover body positioning column and a cover body connecting column are respectively arranged in the auxiliary cover body, the cover body positioning column is connected in the external positioning hole, and the cover body connecting column is connected in the base connecting hole. The utility model further provides that a fixed cavity is formed in the auxiliary cover body, the external micro switch is connected in the fixed cavity, a cover body notch is formed in one side of the auxiliary cover body, the triggering part of the external micro switch is opposite to the cover body notch, and the cover body positioning column is positioned between the cover body connecting column and the cover body notch. The utility model further provides that