Reclosing mechanism of residual-current circuit breaker

Abstract

The invention discloses a reclosing mechanism of a residual-current circuit breaker. The reclosing mechanism of the residual-current circuit breaker is provided with an outer frame, wherein the outer frame is fixedly arranged on a circuit breaker outer cover with a handle. The wire inlet end and the wire outlet end of the handle are respectively provided with a handle drive piece. One end of each handle drive piece penetrates through a lateral wall of the outer frame in a clearance mode and stretches outside. The other end, located on the handle wire inlet end side, of a first handle drive piece is coaxially and fixedly connected with a first rotating disc, and the first rotating disc is connected with a motor in a rigid mode. One end of the first handle drive piece is connected with one end of a rotating piece through a first connection rod, and the other end of the rotating piece is connected with a second reset spring ensuring that the rotating piece rotates towards the direction of the wire outlet end. A second handle drive piece is connected with one end of a second connection rod, and the other end of the second connection rod is provided with a protruded rivet shaft and is connected with a first reset spring ensuring that the second connection rod rotates towards the direction of the wire outlet end. A handle is driven by handle drive pieces to open or close the circuit breaker. After the circuit breaker is closed, the two handle drive pieces are respectively located outside the operating range of the handle, and the working state is still indicated by the handle.

Description

technical field [0001] The invention relates to a molded case circuit breaker with residual current protection in the field of low-voltage electrical technology, in particular to a reclosing operating mechanism of a leakage molded case circuit breaker with an automatic reclosing function. Background technique [0002] The leakage molded case circuit breaker with automatic reclosing function can ensure the continuous, safe and reliable operation of the power system. At present, the existing automatic reclosing mechanism of molded case circuit breaker consists of a handle, at least two large and small gears, a number of stamping parts and a number of standard rooms. After the switch is closed, the handle driver on the reclosing mechanism is linked with the handle, and the handle cannot be moved manually. This reclosing mechanism has the following problems: 1. Due to the gear structure, the height of the mechanism is high, which increases the volume of the circuit breaker; and...

AI Technical Summary

Problems solved by technology

At present, the existing automatic reclosing mechanism of molded case circuit breaker consists of a handle, at least two large and small gears, a number of stamping parts and a number of standard rooms. After the switch is closed, the handle driver on the reclosing mechanism is linked with the handle, and the handle cannot be moved manually.

This kind of reclosing mechanism has the following problems: 1. Due to the gear structure, the height of the mechanism is high, which increases the volume of the circuit breaker; and the gear processing is difficult, the efficiency is relatively low, and the production cost is increased.

2. During installation, the component parts are not an integral structure, and cannot be installed as a set of components as a whole, and each circuit breaker mechanism needs to be adjusted; 3. A rigid connection is formed between the reclosing mechanism and the handle, and the handle does not have indication opening, Function of the tripped position

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