一种大电流塑壳断路器操作机构
By setting a locking groove and a limiting structure on the trip fastener, combined with the cooperation of the latching assembly, the rebound stroke of the trip fastener can be precisely controlled, solving the interference problem caused by excessive rebound of the trip fastener in the operating mechanism of high current molded case circuit breakers, improving operating accuracy and stability, and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG DONGHAI COMPLETE ELECTRICAL APPLIANCES CO LTD
- Filing Date
- 2026-05-12
- Publication Date
- 2026-07-17
AI Technical Summary
The existing high-current molded case circuit breaker operating mechanism has an excessively large tripping and rebound distance at the moment of tripping, making the movement trajectory difficult to control. This causes interference between the tripping trip and the lever, affecting the incorrect position of the lever, the feeling of resistance and jamming during operation, and reducing the life of the mechanism.
A locking groove and a limiting structure are set on the jump fastener. The first and second positions are formed by the locking assembly. Combined with the mechanism spring drive, the rebound stroke of the jump fastener is precisely controlled. In the disengaged state, a preset gap is maintained with the mechanism push rod. The limiting hook is used to hook and limit the locking assembly to avoid interference.
It solves the interference problem caused by excessive springback of the trip lever, improves the accuracy and stability of the operating mechanism, eliminates the feeling of resistance and jamming, extends the service life, and improves the reliability and transmission efficiency of the circuit breaker.
Smart Images
Figure CN122177702B_ABST