Auxiliary contact device of molded case circuit breaker

By designing a plastic case circuit breaker auxiliary contact device including cylinders, moving blocks, pull plates and clamps, the problem of unstable and easy damage in the contact fixation in the prior art is solved, and the stable clamping and rapid installation and maintenance of the contacts are realized, and reliable operation is adapted to various harsh environments.

CN222672945UActive Publication Date: 2025-03-25SHANGHAI TENGSHENG PUMP MANUFACTURING CO LTD
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Patent Information

Application Number
CN202421259149.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-04
Publication Date
2025-03-25
Estimated Expiration
2034-06-04

AI Technical Summary

Technical Problem

The existing plastic case circuit breaker auxiliary contact device cannot meet the rapid fixation of the contact, and is unstable during operation, which can easily cause damage and cause danger.

Method used

An auxiliary contact device including a shell, a cylinder, a moving block, a pull plate, a linkage plate, a limiting block, a sliding plate and a clamp is designed. The moving block drives the pull plate and the pull plate rotates, and the pull plate drives the linkage plate and a limiting block to rotate, thereby driving the sliding plate to slide, and fix the contact body through the clamp.

Benefits of technology

It realizes stable clamping and fixing of the contact body, improves the stability of the contact, and can quickly install and repair the contacts, adapt to different industrial environments and climatic conditions, and ensures reliable operation under harsh conditions.

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Abstract

The utility model relates to the technical field of auxiliary contacts of molded case circuit breakers, and discloses an auxiliary contact device of a molded case circuit breaker, which comprises a shell, the outer wall of the shell is fixedly connected with a cylinder, the output end of the cylinder is fixedly connected with a moving block, and the outer wall of the moving block is rotatably connected with a pull plate. A fixing plate is fixedly connected to the inner wall of the shell, a first linkage plate is rotationally connected to the outer wall of the fixing plate, the outer wall of the first linkage plate is rotationally connected to the inner wall of a pulling plate, a second linkage plate is rotationally connected to the inner wall of the pulling plate, and a limiting block is rotationally connected to the outer wall of the second linkage plate. According to the utility model, the output end of the air cylinder drives the moving block and the second linkage plate to rotate on the inner wall of the limiting block and the first linkage plate to rotate on the outer wall of the fixed plate so as to drive the sliding plate to slide on the outer wall of the first sliding rail, and then the contact body can be clamped and fixed through the first clamping block and the second clamping block; the effect of improving the stability of the contact body is achieved.
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