Plug-in circuit breaker with locking structure

Abstract

The invention discloses a plug-in circuit breaker with a locking structure. The circuit breaker includes a shell, a pressing button is arranged on the shell in a sliding manner; and a static contact piece, a transmission disc, a coil base, a magnetic tripping coil, a reset spring and a contact support are arranged in the shell. The contact support is provided with a moving contact rod, a lock catch and a jump buckle. The jump buckle is in transmission connection with the transmission disc; the lock catch is arranged on one side of the jump buckle; a clamping groove is formed in one end of thelock catch; the clamping groove is clamped with the jump buckle; the other end of the lock catch is provided with an abutting protrusion. The magnetic tripping coil is arranged on the coil base, an iron attracting disc is arranged between the magnetic tripping coil and the abutting protrusion, a reset tension spring is arranged on the coil base, a return torsion spring is arranged between the lockcatch and the contact support, a lock hole opening is formed in the position, corresponding to the transmission disc, of the side wall of the shell, and a locking mechanism is arranged between the locking opening and the transmission disc. The plug-in circuit breaker is simple and reasonable in structure, mis-closing is avoided when the transmission mechanism is not installed, the pull-out of thecircuit breaker can be limited, a good transmission effect is achieved, and the use stability of a product is effectively improved.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a plug-in circuit breaker with a locking structure. Background technique [0002] A circuit breaker is 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 within a specified time. However, the existing plug-in circuit breaker has a complex transmission structure, difficult installation and maintenance, and reduces production and processing efficiency. At the same time, the existing plug-in circuit breaker is prone to jamming when it needs to be tripped, which affects the use of the overall structure. , which is not conducive to product promotion. At the same time, the current plug-in circuit breaker is prone to false closing during transportation or handling, which leads to problems in subsequent assembly and potential safety hazards. The realization of the fi...

AI Technical Summary

Problems solved by technology

However, the existing plug-in circuit breaker has a complex transmission structure, difficult installation and maintenance, and reduces production and processing efficiency. At the same time, the existing plug-in circuit breaker is prone to jamming when it needs to be tripped, which affects the use of the overall structure. , which is not conducive to product promotion. At the same time, the current plug-in circuit breaker is prone to false closing during transportation or handling, which leads to problems in subsequent assembly and potential safety hazards. The fixed position is not directly related to whether the circuit breaker is closed or not. As a result, when the circuit breaker is in the closed state, there is a risk of being pulled out by misoperation, which poses a safety hazard.

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