pole part
By introducing a sealing cover into the vacuum circuit breaker, the problems of numerous components and damage are solved, achieving the effects of cost reduction and protection of bellows and ceramic tubes, while ensuring the integrity of contact alignment and electric field distribution.
CN122158382APending Publication Date: 2026-06-05ABB (SCHWEIZ) AG
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ABB (SCHWEIZ) AG
- Filing Date
- 2025-12-05
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
The cost and complexity of vacuum circuit breakers are increased due to the combination of multiple components during the overmolding process, and the bellows is easily damaged by torque, while the ceramic tube is easily damaged during the overmolding process.
Method used
An electrode post component including a sealing cap is designed. The sealing cap provides guidance, anti-torsion, and compensation functions for the movable contact, ensuring alignment between the movable and fixed contacts and protecting the ceramic tube from damage.
Benefits of technology
It reduces the number of components and manufacturing costs, protects the bellows and ceramic tubes, and ensures proper contact alignment and the integrity of the electric field distribution.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122158382A_ABST
Abstract
The invention relates to a pole part comprising a vacuum circuit breaker (10); a sealing cap (20); and an overmolded plastic housing (90). A shaft of a movable contact (50) of the vacuum circuit breaker is configured to move within an inner tube section of the sealing cap along a central axis of the inner tube section of the sealing cap such that a central axis of the shaft of the movable contact is parallel to the central axis of the inner tube section of the sealing cap. In a first configuration, the shaft of the movable contact is moved within the inner tube section of the sealing cap towards a fixed contact (70); in a second configuration, the shaft of the movable contact is moved within the inner tube section of the sealing cap away from the fixed contact. In the first configuration, at least a portion of the sealing cap is located between at least a first portion of the shaft of the movable contact and at least a portion of the plastic housing; in the second configuration, at least a portion of the sealing cap is located between at least a second portion of the shaft of the movable contact and at least a portion of the plastic housing.
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