Unidirectional pulley

Abstract

The invention relates to a unidirectional pulley. An inner ring body is sleeved outside a mandrel connecting sleeve, a pulley is sleeved outside the inner ring body, the left end and the right end ofthe mandrel connecting sleeve are sleeved with bearings, the inner surfaces of inner rings of the bearings are in contact with the outer surface of the mandrel connecting sleeve, the outer surfaces ofouter rings of the bearings are in contact with the inner-hole wall surface of the pulley, the inner ring body sleeve is sleeved outside the mandrel connecting sleeve arranged between the opposite end surfaces of the two bearings, the outer surface of the mandrel connecting sleeve arranged between the opposite end surfaces of the two bearings is provided with a curved surface die cavity, a rollerpin is arranged in the curved surface die cavity, the cross section of the curved surface die cavity is in a wedge shape, the small end of the curved surface die cavity is consistent with a rotatingdirection of an electric generator in a working process, the large end of the curved surface die cavity is provided with a restoring spring, the restoring spring is supported to the roller pin and pushes the roller pin to the small end of the curved surface die cavity, and a sealing device is sleeved on the mandrel connecting sleeve. The unidirectional pulley eliminates the phenomenon that the pulley skids when running at high speed and solves the conflict between spring thrust and frictional resistance.

Description

technical field [0001] The invention relates to a one-way belt pulley which is mainly used on automobile generators and which transmits power in one direction and slips in the opposite direction. Background technique [0002] At present, there have been applications of one-way pulleys in foreign countries. This kind of pulley has high processing precision, complicated structure and difficult manufacture. There are also designs in this area in China, but the service life is short, generally less than 10,000 hours, and the life test requirements of generators are quite strict. From 0-19,000 to 15 seconds and then down to 0, stop for 5 seconds as a cycle, which requires More than 40,000 tests, the current products of all domestic companies and many foreign companies simply cannot pass the life test of the generator, and they will fail after more than 10,000 tests at most, so they cannot enter the OEM main engine factory. Contents of the invention [0003] The purpose of the ...

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Problems solved by technology

[0002] At present, there have been applications of one-way pulleys in foreign countries. This kind of pulley has high processing precision, complex structure and difficult manufacture.

There are also designs in this area in China, but the service life is short, generally less than 10,000 hours, and the life test requirements of generators are quite strict. From 0-19,000 to 15 seconds and then down to 0, stop for 5 seconds as a cycle, which requires More than 40,000 tests, the current products of all domestic enterprises and many foreign companies cannot pass the life test of the generator at all, and they will fail after more than 10,000 tests at most, so they cannot enter the OEM main engine factory

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