Centrifugal switch suitable for motor driving

Abstract

A centrifugal switch suitable for motor driving comprises a centrifuge and a wire box body; the centrifuge is set with an axially flexible sliding bushing glidingly matched with a shaft; the wire box body is provided with a contact pole piece set in which clutching of contacts is controlled by front end of a movable rod which is rotatably matched with the wire box body; the centrifugal switch further includes a toggle rod whose middle part is rotatably matched with one side at bottom of the wire box body and is reset by a torque spring; front end of the toggle rod contacts bottom end face of the sliding bushing, and the toggle rod rotates under control of the sliding bushing; further, tail end of the toggle rod is collided with the movable rod. This invention achieves functions as follows: it ensures stable operation of the movable rod since end face of the sliding bushing is regarded as working surface for switching contacts; it simplifies structure of the centrifugal switch and enhances strength of the toggle rod in adoption of the integrative toggle rod, and further prolongs service life of the whole centrifugal switch; further, it reduces complexity of installment and enhances convenience for daily maintenance since the integrative toggle rod is adopted.

Description

technical field [0001] The invention relates to a centrifugal switch, in particular to a motor-driven centrifugal switch. Background technique [0002] Existing washing machines and dry-cleaning machines are equipped with centrifugal switches, which are mainly used for motor start-up and high-speed switching. The main structure of the centrifugal switch adopts a centrifuge and a wiring conversion box; one end of the centrifuge is equipped with an axially sliding control panel, the wiring conversion box is equipped with a conversion contact, and the outer swing of the wiring conversion box has a movable rod, which is controlled by the movable rod. The different changes of the conversion contacts, and the swing of the movable rod is driven by the control disk; according to the existing structure, the contact area between the movable rod and the control disk lies on the outer radial circle of the control disk, because the contact of the outer radial circle After all, the area ...

AI Technical Summary

Problems solved by technology

This design uses the sleeve to slide up and down to control the opening and closing operation of the lower contact. Since the opening and closing method adopts the direct contact method, the impact force is relatively large, and the opening and closing operation of the contact is unstable and easy to be damaged.

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