Automatic switching-on device of circuit breaker

Abstract

The invention discloses an automatic switching-on device of a circuit breaker. The automatic switching-on device comprises a shell as well as a transmission mechanism and an electronic control mechanism arranged in the shell, wherein transmission mechanism comprises a positive and negative rotation motor, a transmission central shaft, a transmission gear and a driving gear which is used for driving the circuit breaker and is linked with a handle, a first transmission piece is arranged on the transmission central shaft in a free rotation manner, a second transmission piece fixedly linked with the transmission central shaft is arranged on the transmission central shaft and below the first transmission piece, a linkage check block is arranged on one side of the second transmission piece, relative to the anticlockwise rotation direction of the first transmission piece to form the matching structure that the first transmission piece and the second transmission piece are linked in the anticlockwise direction and are independent in the clockwise direction; and the electronic control mechanism controls the positive rotation, the negative rotation and stopping of the positive and negative rotation motor, realizes the rotation switching on of the driving gear, and then is separated from the positive and negative rotation motor. The automatic switching-on device has the advantages that the automatic switching on is realized, the normal separating of the circuit breaker can not be affected, the safety is good and the like.

Description

Technical field [0001] The invention relates to a matching piece of a circuit breaker, in particular to an automatic closing device of a circuit breaker. Background technique [0002] With the development of my country's smart grid, under the premise of requiring the safe operation of the grid, there is an urgent need for intelligent control of electrical appliances. For example, the use of prepaid electric energy meters and prepaid miniature circuit breakers (such as the MM7S and MM10S series products produced by Zhejiang Maikeli Electric Co., Ltd.) can automatically cut off the power supply when the prepaid electricity charges are exhausted. This greatly facilitates the distribution and control of electric energy by the power supply unit. However, when the user renews the fee, the user's circuit breaker cannot be automatically closed in time, and manual operation by the user or power supply staff is required, which brings inconvenience to the user and cannot meet the needs of ...

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

However, it is known that the motor in this reference document (101707169A) drives the threaded transmission rod and then drives the threaded sleeve to move. The time spent is much longer than the tripping and tripping time of the circuit breaker. However, the handle is limited by the control handle of the electric operating mechanism and cannot be returned quickly. For the user, it is a very serious safety hazard and cannot guarantee the safety of the user's use of electricity.

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