Switching-on and switching-off handle mechanism of plug-in circuit breaker and circuit breaker

Abstract

The invention relates to a switching-on and switching-off handle mechanism of a plug-in circuit breaker and the circuit breaker. The handle mechanism comprises a handle rocker arm, a turntable, a first connecting rod, a second connecting rod and a locking piece, the handle rocker arm is hinged in a shell of the plug-in circuit breaker through a first rotating shaft, and the turntable is hinged inthe shell through a second rotating shaft; the handle rocker arm is connected with the turntable through a first connecting rod, the turntable is connected with an operating mechanism in the plug-in circuit breaker through a second connecting rod, the handle rocker arm is provided with a first shaft hole and a second shaft hole, the first shaft hole is a round hole, and the second shaft hole is anelongated bent hole. Compared with the prior art, the switching-on and switching-off of the plug-in circuit breaker are controlled through the common poking of the handle rocker arm, excessive rotation of the handle rocker arm is carried out through drawing the handle rocker arm, so that the locking piece is operated to be unlocked, and the installation stability of the circuit breaker is improved by adopting different operation logics.

Description

technical field [0001] The invention relates to the field of plug-in circuit breakers, in particular to an opening and closing handle mechanism of a plug-in circuit breaker and a circuit breaker. Background technique [0002] In recent years, plug-in circuit breakers have become more and more widely used, especially with the rapid development of the 5G industry, the demand for 5G cabinets is increasing, and the plug-in circuit breakers used in conjunction with them have attracted more and more attention from manufacturers. [0003] The Chinese invention application with the publication number CN111415848A discloses an opening and closing handle mechanism of a plug-in circuit breaker. The closing and opening are controlled by the rotation of the rocker arm of the handle, and the locking part is operated by linear movement to realize opening, closing and disassembly. The operation logic is separated. However, this structure also has the following disadvantages: 1. When the ro...

AI Technical Summary

Problems solved by technology

However, this structure also has the following disadvantages: 1. When the rocker handle rotates around the shaft, since the shaft is located in the first elongated shaft hole, it cannot ensure that the center of rotation is fixed during rotation, thereby affecting the stability of the opening and closing operation. 2. The plug-in circuit breaker needs to be pulled out from the cabinet by the handle rocker

Due to the small size of the plug-in circuit breaker, especially the smaller contact area of ​​the rocker arm of the handle, and the greater pulling force required, it is difficult for users to pull out from the cabinet

Images