Auxiliary switch connecting structure for two-pole circuit breaker

By designing the connection structure of the fixing mechanism, auxiliary switch, cantilever and striking piece, the problems of difficult installation of the auxiliary switch and low space utilization in the two-pole circuit breaker are solved, and the effects of simplified installation and cost reduction are achieved.

CN223378105UActive Publication Date: 2025-09-23JIANGSU KAILONG ELECTRONICS
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Patent Information

Application Number
CN202422549876.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-22
Publication Date
2025-09-23
Estimated Expiration
2034-10-22

AI Technical Summary

Technical Problem

The installation of auxiliary switches in existing two-pole circuit breakers is difficult and costly, and has low space utilization, making it difficult to accommodate the transmission structure, cantilever, and main shaft positioning structure at the same time.

Method used

A connection structure including a fixing mechanism, an auxiliary switch, a cantilever and a striking piece was designed. The cantilever is driven to rotate by the main shaft to realize the closing and opening of the auxiliary switch. The coordination of the cantilever and the striking piece simplifies the installation process and improves space utilization.

Benefits of technology

The invention realizes the simple and reliable installation of the auxiliary switch of the two-pole circuit breaker, avoids the interference with the main shaft positioning structure, improves the space utilization rate, and reduces the design and production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an auxiliary switch connection structure for a two-pole circuit breaker, the two-pole circuit breaker comprises a rear cover and an operating mechanism arranged at the front end of the rear cover, the operating mechanism comprises a main shaft rotatably penetrating through the operating mechanism and a cover plate arranged at the upper end of the operating mechanism; the auxiliary switch connecting structure for the two-pole circuit breaker comprises a fixing mechanism which is of a hollow structure and is fixed at the upper end of the cover plate; the auxiliary switch is fixed in the fixing mechanism and is elastically connected with a trigger end; the cantilever is fixedly arranged on the main shaft in a sleeving manner; the striking piece is rotatably arranged in the fixing mechanism, and the second end of the striking piece penetrates through the cover plate; wherein the main shaft drives the cantilever to rotate to a first state, the first end of the cantilever abuts against the second end of the striking piece and pushes the cantilever to rotate to a first position, and the first end of the striking piece extrudes the trigger end, so that closing of the auxiliary switch is realized.
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