Circuit breaker with reclosing transmission mechanism in neutral pole capable of being opened and closed

Abstract

The invention discloses a circuit breaker with a reclosing transmission mechanism in a neutral pole capable of being opened and closed. The circuit breaker comprises a shell, a forward and backward rotation motor, a main shaft and a driving handle, wherein the forward and backward rotation motor, the main shaft and the driving handle for driving a handle of the circuit breaker to link are arranged in the shell. A transmission piece and a transmission part are rotationally arranged on the main shaft, the forward and backward rotation motor is linked with the transmission piece in a matched mode, a transmission gear with the main shaft serving as the rotation center is matched with the transmission part in a driving linkage mode, and the driving handle is provided with a handle gear meshed with the transmission gear for transmission. The circuit breaker further comprises a contact transmission mechanism, a first binding post and a second binding post are arranged in the shell, and the contact transmission mechanism comprises a bridging shaft, a touch bridge, a moving contact supporting part and a moving contact.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a circuit breaker with a reclosing transmission mechanism in a neutral pole which can be opened and closed. Background technique [0002] With the development of my country's smart grid, under the premise of requiring the grid to operate safely, it is urgent to control electrical appliances intelligently. For example, the combined use of prepaid energy meters and prepaid miniature circuit breakers (such as MM7S and MM10S series products produced by Zhejiang Mikeli Electric Co., Ltd.) can allow electricity users to automatically cut off the power supply when the prepaid electricity fee is exhausted. This greatly facilitates the distribution and control of electric energy by the power supply unit. However, after the user renews the fee, the user's circuit breaker cannot be automatically closed in time, and the user or the power supply staff need to manually operate, which brings inconvenience ...

AI Technical Summary

Problems solved by technology

Although this structure realizes the function of automatic closing, it has the following defects: when the user renews the fee, the threaded sleeve slides, drives the shift fork and the handle to perform the closing action, and the handle of the control mechanism then drives the handle of the circuit breaker clockwise. Rotate to close, but for the prepaid circuit device, when the user owes the fee or the circuit fails, it will automatically trip, and the handle of the circuit breaker will reset counterclockwise, but the electric operating mechanism of the above-mentioned reference document (101707169A) The control handle is always limited behind the handle of the circuit breaker, causing the handle of the circuit breaker to fail to turn and trip

[0005] The automatic closing device lacks the function of acting as a circuit breaker that can open and close the neutral pole. Therefore, when it is applied to the power grid, it is necessary to configure an additional circuit breaker that can open and close the neutral pole, resulting in an increase in the number of circuit breakers, which is not conducive to Reduced size

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