Contactor auxiliary contact structure

By installing auxiliary contact plates on the outside of the contactor's arc extinguishing chamber and using a push rod and a toggle rod for switching, the problem of auxiliary contact contamination is solved, the reliability and current carrying capacity of the contactor are improved, and the connection method is simplified.

CN224366786UActive Publication Date: 2026-06-16KUNSHAN GUOLI VACUUM ELECTRIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KUNSHAN GUOLI VACUUM ELECTRIC
Filing Date
2025-04-28
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

The auxiliary contacts of existing contactors are susceptible to contaminants, which increases contact resistance, reduces contact reliability and current carrying capacity, and existing microswitches have limited current carrying capacity and complex connections.

⚗Method used

The auxiliary contact piece is installed on the outer side of the contactor's arc extinguishing chamber, and the elastic deformation switching of the auxiliary contact piece is achieved by the push rod and the toggle rod. Combined with the slot and glue fixation, the design is simple and reliable.

🎯Benefits of technology

It improves the reliability and stability of auxiliary contacts, enhances current carrying capacity, reduces the failure rate, simplifies connection methods, and improves the working performance of the contactor.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a contactor auxiliary contact structure, include: at least two auxiliary contact sheet, at least two auxiliary contact sheet all install in the outside of arc extinguishing chamber of contactor, just the arc extinguishing chamber is located below one of auxiliary contact sheet installs a top rod that can be along vertical direction activity, top rod is used for being urged upward and driving corresponding one auxiliary contact sheet produces elastic deformation to switch the open -close state of this auxiliary contact sheet and other auxiliary contact sheet when contactor works. The utility model can make auxiliary contact sheet far from the pollutant environment of arc production in arc extinguishing chamber, ensure that the working environment of auxiliary contact is relatively clean, has improved the reliability and stability of auxiliary contact, and has higher current -carrying capacity.
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