Positioning structure for contact plate group in fixed contact of circuit breaker

Abstract

The invention discloses a positioning structure for a contact plate group in a fixed contact of a circuit breaker. The positioning structure comprises contact plates. Conductive plates used for conduction are arranged in the contact plates. A plurality of contact plates are horizontally laminated to form the contact plate group which is fixedly arranged in a contact holder of the fixed contact. The positioning structure further comprises cover plates. Each cover plate has a shape in fit with that of the contact plate, and is arranged between two adjacent contact plates. The two sides of the cover plate are provided a positioning pin respectively. Positioning holes in fit with the positioning pins are formed at the positions, corresponding to the positioning pins on the cover plates, of the contact plates, and are formed on the two sides of each contact plate. Due to the adoption of the structure, the contact plate group in the fixed contact of the circuit breaker can realize positioning connection among the contact plates by the positioning pins on the cover plates between every adjacent two of the plurality of contact plates forming the contact plate group and the positioning holes at corresponding positions on the contact plates, avoids sliding displacement among the contact plates, ensures connection stability and reliability in the working of the circuit breaker and simultaneously brings convenience to the assembly and mounting of the fixed contact.

Description

technical field [0001] The invention relates to a structural component applied to a circuit breaker, in particular to a positioning structure for a contact piece group in a static contact of a circuit breaker. Background technique [0002] The circuit breaker is used to connect a certain range of internal circuits and external circuits. Its function is equivalent to the main switch. The basic structure of the circuit breaker includes two parts, namely the terminal and the driving device. Driven by the driving device, the terminal can be connected or disconnected. open circuit. According to different connection methods, the wiring terminals of circuit breakers can be divided into front-panel wiring, rear-panel wiring and plug-in wiring terminals. The circuit breaker using plug-in wiring terminals omits the necessary isolation in the wiring terminals of the original general circuit breaker. The device improves the economy of use, and at the same time brings great convenience ...

AI Technical Summary

Problems solved by technology

The stacked contact pieces are fixed in the contact frame. With the contact pieces of this structure, due to the lack of positioning connection between the contact pieces, the relative sliding displacement between the contact pieces is easy to occur, which leads to the static contact. The contact set may not be able to accurately cooperate with the moving contact, which will affect the stability and reliability of the circuit breaker in the working state

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