Fully-sealed magnetic control mechanism

The design of the fully sealed magnetic control mechanism solves the problem of insufficient sealing of magnetic circuit breakers, achieving higher sealing performance and stability, and improving the service life and safety of the equipment.

CN121748232APending Publication Date: 2026-03-27JIANGSU HONGDA ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-30
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Existing magnetically controlled circuit breakers have poor sealing performance, allowing external dust and moisture to easily enter, affecting their normal operation and mechanical strength, and potentially causing short-circuit faults.

Method used

The fully sealed magnetic control mechanism is designed by creating a sealed space through a shield between the pressure plate and the fixed plate, and by using a telescopic movable neck sleeve and a pull rod mechanism, combined with the moving iron core and the stationary iron core, to achieve full sealing. The pull rod mechanism is sealed by a sealing rod and a pull rod sleeve, and the support stud improves stability.

Benefits of technology

The improved sealing of the circuit breaker prevents dust and moisture from entering, extending equipment lifespan and safety. It also ensures the mechanism remains sealed, enhancing equipment stability and maintenance efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN121748232A_ABST
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Abstract

The invention discloses a fully-sealed magnetic control mechanism, and relates to the technical field of circuit breakers, the fully-sealed magnetic control mechanism comprises a pressing plate and a fixing plate, a shielding cover capable of forming a closed space is arranged between the pressing plate and the fixing plate, a through hole is formed in the pressing plate and is sealed through a telescopic movable neck sleeve, and a pull rod mechanism used for opening and closing is connected in the movable neck sleeve; a movable iron core fixedly connected with the pull rod mechanism and a static iron core fixedly connected with the fixing plate are arranged in the shielding cover, and the two ends of the movable neck sleeve are tightly attached to the pull rod mechanism and the through hole respectively. The beneficial effects of the invention are that the shielding cover is arranged between the pressing plate and the fixing plate to form a closed space, thereby enhancing the sealing performance of the mechanism, preventing dust, moisture and other substances from entering the mechanism, prolonging the service life of the mechanism, and improving the safety of the mechanism; through the arrangement of the movable neck sleeve, the sealing performance of the mechanism cannot be affected in the up-and-down moving process of the pull rod mechanism, and it is guaranteed that the mechanism is in a sealed state all the time.
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