Moving contact group of change-over switch

By adopting the limit design of fixed inlays and contact bases in the dynamic contact group of the switch, combined with riveting and pin fixing, the problem of poor connection reliability of the contact group is solved, and higher stability and service life are achieved.

CN223123764UActive Publication Date: 2025-07-18XIAN JIAXIN RAILWAY EQUIP CO LTD
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Patent Information

Application Number
CN202421729769.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-19
Publication Date
2025-07-18
Estimated Expiration
2034-07-19

AI Technical Summary

Technical Problem

During the operation of the existing switch dynamic contact group, the anti-detachment limit structure is easily damaged due to centrifugal force and impact force, which has poor connection reliability and low service life.

Method used

The design of conductive contact ring, contact column and contact base is adopted. The lower end of the contact column is fixed and connected to the fixed inlay, and the grooves or three-dimensional structures embedded in the contact base are for limit fixation. Combined with riveting, pins and thread fixation, the connection stability is enhanced, and the anti-detachment limit is achieved through the cooperation of the annular limit table and the fixed inlay.

Benefits of technology

It improves the connection reliability between the contact column and the contact base, avoids loosening and falling off, increases the contact area, ensures the stability and reliability of the contact group, and extends the service life.

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Abstract

The utility model discloses a movable contact group of a change-over switch, which belongs to the technical field of movable contact groups of change-over switches, and particularly structurally comprises a conductive contact ring, a contact column and a contact base, the contact ring is sleeved on the contact column, the contact column is fixedly connected on the contact base, and the lower end of the contact column is fixedly connected with a fixed inlay. And the fixed inlay is embedded into the contact base to be fixed. According to the utility model, after the fixed inlay is fixedly connected with the lower end of the binding post, the end of the binding post is embedded into the contact base to be fixed (by means of pouring and the like), part of the inlay in the contact base is embedded into the groove part or the three-dimensional cavity structure with a large lower part and a small upper part is used for blocking and limiting the fixed inlay, and the fixed inlay is prevented from being damaged under the impact action of horizontal force on the contact post for a long time. According to the utility model, better connection reliability and anti-drop effect are achieved, the connection stability of the contact column can be improved, the drop is avoided, the contact area is increased, and the occlusion stability of the contact base and the contact column is better.
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