A circuit breaker intelligent controller base with magnetic damping

Abstract

A circuit breaker intelligent controller base with magnetic damping, including a bent plate installed on the base, a spring for driving the bent plate to return when the operating mechanism of the circuit breaker is closed, and a sensor for sensing the position of the bent plate Micro switch, the cantilever on the large rotating shaft of the operating mechanism contacts and pushes the bent plate to reset when the brake is opened. It is also equipped with a permanent magnet. The direction of its magnetic force acting on the bent plate is the same as that of the spring acting on the bent plate. The magnetic force of the permanent magnet acting on the bent plate in the closing position state is greater than the magnetic force acting on the bending plate in the opening position state. When the circuit breaker is closed, the cantilever of the operating mechanism is moved away, and the bent plate is reset under the action of the spring. The force of the spring and the suction force of the permanent magnet act on the bent plate together. When there is vibration, the bent plate will not shake, which prevents the controller from malfunctioning. . When the circuit breaker is opened, the cantilever of the operating mechanism pushes the bent plate away from the permanent magnet, and the suction force of the permanent magnet on the bent plate is negligible, ensuring that the large rotating shaft of the operating mechanism can be reset reliably.

Description

technical field [0001] The invention relates to a low-voltage circuit breaker, in particular to a universal circuit breaker, in particular to an intelligent controller base of an intelligent circuit breaker. Background technique [0002] The intelligent universal circuit breaker is a widely used low-voltage electrical appliance. It has an intelligent controller base. The conventional intelligent controller base is equipped with bent plates, springs and micro switches. The curved plate can turn over a certain angle around a fulcrum. On the one hand, it is connected with the spring and driven by the spring. On the other hand, it is also mechanically coupled with the cantilever on the rotating shaft of the operating mechanism of the circuit breaker and driven by the cantilever. During the opening operation of the circuit breaker, the cantilever on the operating mechanism overcomes the elastic force of the spring to drive the bent plate to turn over an angle and reach the stable...

AI Technical Summary

Problems solved by technology

Obviously, since the elastic force of the spring and the driving force of the operating mechanism are a pair of balanced forces, their primary balance condition is to ensure the reliability and stability of the operation of the operating mechanism and related moving parts. If the problem is to adjust the elastic force of the spring, it will inevitably break the above-mentioned primary balance condition, resulting in a decrease in the reliability and stability of the operating mechanism and related moving parts.

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