Isolating switch closing energy storage mechanism and isolating switch

EP4546385A4Pending Publication Date: 2026-06-24ZHEJIANG CHINT ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
ZHEJIANG CHINT ELECTRIC CO LTD
Filing Date
2023-10-25
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing isolation switches face challenges with high contact resistance and temperature during closing, leading to ablation and reduced service life, as well as issues with wiring stability and external environmental interference.

Method used

The isolation switch closing energy storage mechanism includes a contact support, contact bridge, elastic member, and energy storage structure, which stores energy and releases it to quickly close the contacts, reducing arc generation, contact resistance, and temperature, while also improving wiring stability and environmental sealing.

Benefits of technology

This solution effectively reduces contact arc generation, contact resistance, and temperature, thereby extending the service life of the isolation switch, improving electrical life and reliability, and enhancing space utilization and environmental protection.

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Abstract

The present invention belongs to the technical field of low-voltage electrical appliances, and discloses an isolation switch closing energy storage mechanism and an isolation switch. The isolation switch closing energy storage mechanism includes a contact support, a contact bridge, an elastic member and an energy storage structure, wherein the contact support is slidably assembled in a housing; the contact bridge is movably assembled on the contact support; the elastic member is connected to the contact bridge and the contact support; the elastic member is used to drive a moving contact on the contact bridge to move to the static contact; and the energy storage structure is used to make the elastic member store energy first and then release it when the contact support drives the moving contact on the contact bridge to move to the static contact. The elastic member releases energy and can drive the moving contact to quickly contact the static contact, which can reduce the generation of a contact arc and effectively reduce a contact resistance and temperature between the moving contact and the static contact, thereby reducing the degrees of ablation and wear of a contact point and improving the electrical life performance of the isolation switch.
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