A multifunctional contactor

By precisely connecting the movable and fixed contact groups of the multi-functional contactor, using the surface contact design of the contact roller and the semi-circular groove, and employing a mechanical locking structure, the problems of high contact resistance and reliance on electromagnetic force to maintain engagement are solved, achieving low-loss, stable and reliable circuit control and long lifespan.

CN120809541BActive Publication Date: 2025-11-28LS INDAL SYST WUXI
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Patent Information

Application Number
CN202511311185.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-15
Publication Date
2025-11-28
Estimated Expiration
2045-09-15

AI Technical Summary

Technical Problem

The existing contactor has a limited contact area, resulting in high connection resistance and high heat loss. It also relies on continuous electromagnetic force to maintain the engaged state, which increases energy consumption and shortens lifespan. AC contactors have poor stability under vibration.

Method used

It adopts precise docking of movable contact group and fixed contact group, combined with the surface contact design of contact roller and semi-circular groove, uses mechanical locking structure to replace electromagnetic force to maintain the attraction state, and achieves rapid arc extinguishing through arc extinguishing cover and folding airbag to reduce resistance and wear.

Benefits of technology

It achieves fast and reliable circuit control, reduces current loss, extends contact life, eliminates noise, improves vibration resistance, reduces maintenance power consumption, and enhances overall stability and durability.

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Abstract

The present application relates to the technical field of contactor, disclose a kind of multifunctional contactor, including upper shell and the base of being clamped with upper shell, movable support, moving iron core, coil support, coil winding, static iron core are arranged from top to bottom in upper shell and base, wherein coil support, coil winding and static iron core are fixed in base, coil support is set on static iron core, return spring is arranged between coil support and moving iron core, movable support is connected with moving iron core and slides in upper shell, movable support is parallelly provided with multiple movable contact point groups, and fixed contact point group is arranged on both sides of each movable contact point group.The multifunctional contactor, by the cooperation design of contact roller and semicircular arc groove, converts wire contact into surface contact, increases contact area, reduces on-resistance, reduces current loss;The combination of friction strip and inclined groove surface makes the contact roller produce slight rotation each time, avoids local excessive wear, prolongs the service life of contact point.
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