Clutch and electric tool, garden tool and food waste disposer with clutch

Abstract

The present invention provides a clutch. The clutch comprises a supporting member connected with a rotating shaft, and at least two clutch blocks and elastic members fitting with the clutch blocks, wherein at least the two clutch blocks are uniformly arranged along the circumferential direction of the supporting member; the elastic members have a pre-tightening force that enables the clutch blocks to move toward the center of rotation of the supporting member; the elastic members are connected between the clutch blocks and the supporting member; the clutch blocks are provided with stroke limiting units; the stroke limiting units are configured as elongated slots; the included angle between the extending direction of each elongated slot and the moving direction of each clutch block is an acute angle; and one ends of the elastic members are clamped in the elongated slots and can move in the elongated slots under the action of centrifugal force. According to the clutch, the stroke limiting units are arranged so that the movement direction of the elastic members subjected to stress can be not in a straight line with the stress direction of the elastic members; the stroke of the clutch blocks, in the movement direction, subjected to the centrifugal force is far greater than the deformation of the elastic members; and the clutch can be applied to the condition that the free length, the stroke and the stress of the elastic members are relatively harsh.

Description

technical field [0001] The invention relates to a clutch and an operating machine with the clutch, in particular to a centrifugal clutch and an electric tool, a garden tool and a food waste disposer with the clutch. Background technique [0002] The clutch is similar to a switch, which engages or disengages the power transmission function, or performs speed limit protection by triggering the switch. The active part and the driven part of the clutch mechanism can be temporarily separated and then gradually engaged. Generally, rigid connection cannot be adopted between the driving part and the driven part of the clutch. [0003] Clutches on the market are mostly the structure in which the left and right clutch blocks are connected by extension springs or the left and right clutch blocks lean against the support block and are connected by extension springs. However, in actual use, it is often encountered that the clutch has relatively strict requirements on the length, stroke ...

AI Technical Summary

Problems solved by technology

The movement direction of the extension spring after being stressed is consistent with its direction of force. Due to the limitation of space, it is often hoped that the extension spring will have small deformation and large tension when installed, and the stroke of the extension spring will be large and the force change will be small when subjected to centrifugal force. However, according to Hooke's law F=kx is contradictory in these two cases, so the extension spring clutch in the prior art cannot solve this technical problem, and the existing scheme needs to be improved

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