Circuit breaker and buckle assembly thereof

Abstract

The invention discloses a circuit breaker and a buckle assembly thereof. The buckle assembly comprises a buckle and protrusions. The two protrusions are distributed on a first shell body and a second shell body of a circuit breaker shell. The buckle comprises a frame and elastic clamping strips with clamping heads, and the frame is arranged on the circuit breaker shell in a sliding mode. Each protrusion comprises a sliding surface and clamping surfaces used for being connected with the corresponding elastic clamping strip in a clamping mode, wherein the clamping surfaces comprise the first clamping surface and the second clamping surface, the inclination angle of the first clamping surface relative to the horizontal plane is larger than the inclination angle of the second clamping surface relative to the horizontal plane, and the inclination direction of the sliding surface is opposite to the inclination direction of the clamping surfaces. The buckle is connected with the clamping surfaces in a clamping mode; in the assembling process, the clamping heads slide along the clamping surfaces, elastic force of the buckle is generated by abutting deformation of the clamping heads and the clamping surfaces, and the buckle can generate clamping force large enough as long as moving by a small distance when installed on a guide rail; in the disassembling process, the clamping heads are pulled away to the sliding surfaces, the buckle bounces off automatically, and barbs guarantee that the buckle does not bounce out of a body. Thus, disassembling is convenient, reliability is guaranteed, and labor intensity is reduced.

Description

technical field [0001] The present invention relates to the technical field of circuit components, and more specifically, relates to a circuit breaker and a buckle assembly thereof. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions, and can close, carry and break current under abnormal circuit conditions (including short-circuit conditions) within a specified time. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overheating and underheating relays, etc. Moreover, there is generally no need to change parts after breaking the fault current. At present, it has been widely used. [0003] The current circuit breaker housing i...

AI Technical Summary

Problems solved by technology

[0004] However, in the above connection method, the clamping force of the buckle is often not enough, and when the buckle is separated from the slot, the clip head of the clip needs to be disengaged from the slot, and the clip head needs to be manually removed from the slot during the disengagement process. Breaking out of the card slot, a waste of labor

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