Molded case circuit breaker buckle

Abstract

The invention provides a molded case circuit breaker buckle. The molded case circuit breaker buckle comprises a buckle body, wherein the buckle body comprises two side plates and a connection plate, the connection plate is used for connecting the two side plates, penetrating holes are correspondingly formed in the two side plates and are used for arranging a buckle shaft in a penetrating way, a locking content surface and a limitation surface are arranged on the buckle body, the molded cased circuit breaker buckle is characterized in that a convex block is arranged on one of the side plates, an installation plate is arranged on one of the side plates in an extension way and is used for installing a counter-force spring, one surface, opposite to a lock, of the convex block is the locking content surface, a support plate is arranged between the convex block and the installation plate and in an installation hole of the lock in an extension way, a surface, connected with the lock content surface, of the support is the limitation surface, the limitation surface props against an inner wall of the installation hole when being buckled with the buckle body, and the locking content surface props against an outer wall of the installation hole when being buckled with the buckle body. A necessary contact surface among the molded case circuit breaker buckle, the lock and the support is reduced, the molded case circuit breaker buckle is more stable to use, and the slip risk is reduced.

Description

technical field [0001] The invention relates to a reconnection, in particular to a reconnection for a molded case circuit breaker. Background technique [0002] In electrical product exhibitions and electrical appliances market, low-voltage circuit breakers can be seen everywhere, especially molded case circuit breakers are very popular. The molded case circuit breaker has the second-stage protection function of overload long-time delay and short-circuit instantaneous action, and can also be used in conjunction with modular units such as leakage current, measurement, and electric operation. In the low-voltage power distribution system, it is often used as a terminal switch or a branch switch, replacing the fuse and knife switch commonly used in the past. [0003] The molded case circuit breaker includes a frame, and the quality and structure of the frame determine the safety and stability of the molded case circuit breaker. The frame includes a rebuckle, a lockbuckle and a...

AI Technical Summary

Problems solved by technology

[0004] The mating contact part between the traditional rebuckle and the lock is called the lock content, and the surface where it is located is the lock content surface. The traditional rebuckle is provided with a limit surface for limiting its position. The limit surface and the bracket are formed by interference and cooperation For the traditional rebuckle limit, the accuracy of the lock content is reflected in the matching relationship between the limit surface and the bracket. The size of the lock content is very critical in plastic case products. Small size will lead to slipping. When one of the contact surfaces between the bracket, lock and re-buckle changes, the accuracy of the rest of the contact surfaces between parts will be difficult to guarantee. The traditional setting of re-buckle, lock and bracket The stability of the circuit breaker is poor, and there are many cases of slipping

The fit gap between the lock and the bracket will also make it move up and down when the product is buckled and closed. The up and down displacement within this tolerance range will also cause the lock content to change when the product is buckled and closed. , resulting in serious slipping phenomenon

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