Rotating handle operating device of moulded case circuit breaker

Abstract

The invention relates to a rotating handle operating device of moulded case circuit breaker. Straight pulling operating mode is changed into rotating handle operating mode. The operating device comprises a cover, a rotating handle, a rocker, a guide plate provided with a socket, a guiding mechanism which is composed of two groove-shaped guide rails and supporting axles and a bearing as well as a shifting mechanism which is composed of a chute, a shifting shaft and a rolling bearing; wherein the rocker and the rotating handle are respectively arranged at the inner side and outer side of the cover, the chute is formed on the rocker, the shifting shaft is fixed on the guide plate, the rolling bearing is arranged on the shifting shaft and is inserted into the chute, the groove-shaped guide rail of the guiding mechanism is arranged and fixed in the cover, the bearing shaft is fixed on the two sides of the guide plate, and the bearing is arranged on the supporting axle and is inserted into the guide groove of the groove-shaped guide rail. The guiding mechanism and shifting mechanism all adopt rolling friction structure, so that friction resistance is small, transmission is flexible, andthe defect that operation is strenuous in the prior art is overcome, thus being especially applicable to moulded case circuit breaker of large case frame.

Description

technical field [0001] The invention relates to a rotary handle operating device, in particular to a handle operating device on a molded case circuit breaker which converts the operation mode of the straight handle into the operation mode of the rotary handle. Background technique [0002] Most of the handles of the operating mechanism on the molded case circuit breakers currently produced are straight pull handles. When the circuit breaker is opened and closed, the track of the handle pull operation is a straight line. Due to the different use occasions of the circuit breaker, for the sake of convenient operation and safety, some occasions require a circuit breaker operated by a rotary handle, and the trajectory of the handle operated by the rotary handle is arc-shaped. The existing solution to meet this need is to add an external rotary handle operating device to the internal straight handle operation of the molded case circuit breaker. The significant advantage of this so...

AI Technical Summary

Problems solved by technology

[0004] In summary, the rotary handle operating device of the molded case circuit breaker in the prior art generally has the following two major technical defects: laborious operation, inflexible transmission (transmission parts There is competition between them, and even the phenomenon of seizure), the performance is not good; the mechanism is complicated, the installation and debugging are difficult, there are many metal parts, and the manufacturing cost is expensive

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