A New Electric Operating Mechanism for Small Circuit Breakers

Abstract

The present invention relates to the field of the circuit breaker technology, especially to a novel miniature circuit breaker electric operating mechanism. The mechanism comprises a circuit board, a motor, a first driving part, a second driving part, a sensor and a controller. The motor is fixed on the circuit board, the first driving part is fixedly connected on the output shaft of the motor, and the second driving part is pivoted to the circuit board; the first driving part and the second driving part are engaged through gear teeth at the surfaces of the first driving part and the second driving part, and the second driving part is provided with a conduction part and a magnet; and the controller is electrically connected with the motor, a switch-on area, an opening area and a normal contact area, the conduction part can be contacted with the switch-on area and the opening area, and the magnet can correspond to the sensor of the switch-on area and the sensor of the opening area. The novel miniature circuit breaker electric operating mechanism can solve the technical problems that the detection position state of the current breaker electric operating mechanism is vulnerable to interference of a magnetic field or the controller of the breaker cannot accurately determine the detection position state caused by the machinery wearing and aging.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a novel electric operating mechanism of a small circuit breaker. Background technique [0002] The electric operating mechanism is an important part of circuit breaker control opening and closing, and the position state detection of the electric operating mechanism is particularly important. If the position state of the electric operating mechanism cannot be correctly judged, the driving motor is prone to malfunctions such as stalling, and the stalling will cause motor failure. Fever, even a fire in severe cases. [0003] The position state detection of the existing circuit breaker electric operating mechanism is mainly realized by the way of Hall sensor plus magnet or mechanical contact. The biggest problem of using Hall sensor plus magnet to detect the position state of the electric operating mechanism is that it is easily disturbed by the magnetic field. The test pro...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new electric operating mechanism for small circuit breakers. In order to solve the existing electric operating mechanism, the detection of the position state of the electric operating mechanism is easily disturbed by the magnetic field or the contact part of the detection position has wear and aging. The controller of the circuit breaker cannot correctly judge the technical problem of the existing position status

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