Spring friction brake one-way coupling damping belt wheel

Abstract

The invention discloses a spring friction brake one-way coupling damping belt wheel. The spring friction brake one-way coupling damping belt wheel comprises a threaded mandrel, wherein the mandrel stretches into a belt hub; a friction stop ring and a positioning sleeve are pressed into the inner wall of the belt hub; the outer diameter of the mandrel forms a convex ring; the convex ring is provided with steps; a gasket is sleeved with the exterior of the mandrel and forms steps; a damping spring is sleeved with the exterior of the mandrel; one head of the damping spring is propped against the convex ring of the mandrel; the end face of the head is propped against the steps of the convex ring; the other head of the damping spring is propped against the gasket; the end face of the head is propped against the steps of the gasket; a friction sliding ring is sleeved with the exterior of the gasket in a rotary fit mode; a friction spring is sleeved with the exterior of the damping spring; one head of the friction spring is arranged in the friction sliding ring and the other head of the friction spring is arranged in the friction stop ring; the outer wall of the friction sliding ring is in clearance fit with the positioning sleeve; the inner diameter of the friction stop ring and; the inner diameter of the friction sliding ring is smaller than the outer diameter of the friction spring, so that the tensile force of the spring is increased; the friction spring as well as the friction stop ring and the friction sliding ring are locked through friction, and can be separated alternately.

Description

technical field [0001] The invention belongs to the technical field of manufacturing one-way coupling damping pulleys for automobile generators, in particular to a one-way coupling damping mechanism braked by spring friction, in particular to a one-way coupling damping pulley for spring friction brake. Background technique [0002] Auto generator one-way clutch pulley has been widely used in some high-end cars in the world. When the generator is driven by the crankshaft of an automobile engine such as a belt, pulley unit, excessive rotational torque may be generated on the pulley, shaft, and pulley due to the cycle of intake stroke, compression stroke, combustion and expansion stroke, and exhaust stroke (torque) and tension. Under the tendency of the rotation of the crankshaft to drop instantaneously, the generator shaft has a large amount of inertia, and the belt is pulled in the direction of torque generation and changes in tension, which may cause the belt to overload an...

AI Technical Summary

Problems solved by technology

But the OAD of this kind of structure has the following technical problems at present: 1. One end of the friction spring is fixed on the cage, which presses the end of the friction spring into a straight line, and the straight line and the circle form a corner point, and the friction force is Focus on this corner point, when the generator rotates at high and low speeds to generate friction clutch, the corner point of the friction spring fixed on the cage is easy to break

2. In addition, the friction spring corner point and the outer circular surface are all used at one time to stop and overrun the friction generated by the inner diameter of the belt hub. Not only the service life is low, but the manufacturing process is complicated and the cost is high

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