Handle actuating mechanism of plug-in circuit breaker

Abstract

The invention relates to a handle actuating mechanism of a plug-in type circuit breaker. The handle actuating mechanism comprises the plug-in circuit breaker, a manual handle, a locking mechanism and a switching-on and switching-off display mechanism, wherein the locking mechanism is arranged at the upper part of the manual handle, and through pushing in and pulling out of the manual handle, protruding blocks of an in-place detection piece and a mistaken pulling prevention piece of the locking mechanism extend out of or retract into a cabinet, so that the plug-in circuit breaker cannot be pushed to be switched on before being installed in place and cannot be pulled out before being switched off; a disc spring is arranged on the lower portion of each protruding block, the disc springs always exert upward lifting force on the protruding blocks, and therefore the protruding blocks are not prone to being out of position; the manual handle is in linkage with the switching-on and switching-off display mechanism through a wedge-shaped protruding block, a switching-on mark is displayed after the circuit breaker is switched on, and a switching-off mark is displayed after the circuit breaker is switched off; and due to the arrangement of the handle action mechanism, the number of parts needed by a locking mechanism and the opening and closing display mechanism of the plug-in circuit breaker is small, the structure is compact and simple, and work is stable and reliable.

Description

technical field [0001] The invention relates to a low-voltage electrical appliance, in particular to a handle action mechanism of a plug-in circuit breaker and the plug-in circuit breaker. Background technique [0002] With the rapid development of my country's electric power and communication technology, especially the application of 5G network technology, higher and higher requirements are put forward for the practicability, safety and reliability of terminal electrical equipment such as circuit breakers. It is far from meeting these requirements. In the continuous research and development, my country's circuit breakers have not only reached a new level in terms of miniaturization, intelligence, and reliability, but also have many new designs in structure. It is as easy to plug and use as the plug, and the circuit breaker can be easily installed or withdrawn from the circuit, and can be locked in a stable working state at the installation position. At the same time, the wiri...

AI Technical Summary

Problems solved by technology

The locking protection mechanism and opening and closing display mechanism of the existing plug-in circuit breaker are generally set independently, the structure is complicated, and the precious internal space of the circuit breaker is occupied. Some of these mechanisms use buttons, and some use handles, and the handles for locking protection The action protruding block extends out of the installation cabinet of the circuit breaker. Due to the elastic deformation of the cabinet, the handle action protruding block fails to work, resulting in poor working stability of the circuit breaker.

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