High-current self-clean cam switch

Abstract

The invention discloses a high-current self-clean cam switch, which comprises a contact substrate of which the middle is provided with a round hole; a cam is arranged in the round hole; a pair of static contacts is symmetrically arranged on two sides of the contact substrate; two lateral surfaces of the cam are oppositely provided with supports; the supports are assembled with a dual-contact pointmoving contact respectively; the moving contacts respectively correspond to the static contacts; compression springs are arranged between the moving contacts and the side wall of the contact substrate; contact points on two sides of each moving contact are inclined an angle toward the cam direction; the length of the moving contacts is slightly greater than a standard length; and the moving contacts are made of an elastic material. Aiming at the problems that the commonly used cam switch does not have self-clean function and the prior self-clean cam switch is difficult to adapt to high current, the invention provides the self-clean cam switch capable of being widely suitable for high, intermediate and low current, which can automatically remove impurities such as dust and the like, does not easily have poor contact, and can be widely suitable for controlling the high, intermediate and low current.

Description

technical field [0001] The invention relates to a cam switch, in particular to a self-cleaning cam switch. Background technique [0002] Cam switch refers to an electrical appliance that adjusts and controls the working state of contacts through cam movement. At present, the commonly used cam switch is equipped with a double-contact contact on the bracket on the side of the cam, and a compression spring is arranged between the contact and the side wall of the contact base. When the cam rotates, the bracket moves with the cam to drive the movement of the contacts, thereby realizing the disconnection and connection of the contacts. When the support is at the concave point of the cam, the switch is in the on state, and when the support is at the salient point of the cam, the switch is in the off state. This structure has two disadvantages: 1. The breaking rate of the contact is affected by the shape of the cam, so it cannot reach a relatively high breaking rate, which is easy...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a cam switch that can be widely used in large, medium and small currents for the problems that the commonly used cam switches do not have self-cleaning function and the existing self-cleaning cam switches are difficult to adapt to large currents. self-cleaning cam switch

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