A circuit breaker handle connection structure

Abstract

A circuit breaker handle connection structure, comprising a handle (1) and a lever (2), the handle (1) and the lever (2) are assembled together, characterized in that the handle (101) of the handle (1) ) is provided with a mounting groove (102), the bottom (201) of the lever (2) is installed in the mounting groove (102) and can rotate, and the lever (2) is in the mounting groove (102) When rotating to a fixed position, the degree of freedom is limited by the limit boss (103), so that the lever (2) is installed in the installation groove (102). The handle connection structure of the circuit breaker adopts a rotating installation method for the lever and the handle, so that the handle can be reliably connected with the lever and limited without increasing the cost of the handle and the lever.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a connection structure of a circuit breaker handle. Background technique [0002] Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, commonly known as "air switch", also refers to low-voltage circuit breaker. It is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload, and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, e...

AI Technical Summary

Problems solved by technology

However, in the existing installation methods of these handles and levers, when the handle is installed vertically, when the handle drives the lever to close and open the brake, the handle needs to be limited by the arc inside the middle cover of the circuit breaker. First, the operating force of the handle will be increased. , affecting the movement speed of the mechanism. Second, during the closing and opening process, it will cause friction between the handle and the middle cover and generate a lot of dust that will affect the moving parts of the mechanism. The third is that production and debugging are inconvenient. If there is no middle cover, the handle cannot be reliably connected with the lever. connection, it is easy to fall off from the lever, or even unable to close and open. In the process of production and debugging, other tools are needed to realize the closing and opening action of the product

When the handle is installed from the side, the limit of the handle is insufficient, and one side is fully open, so it is easy to slip out of the limit slot or cause friction with the side wall of the middle cover during use, which will also cause a lot of dust, etc. , affecting the performance of the product

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