Drive gear structure for unidirectional overrunning clutch

Abstract

The invention discloses a drive gear structure for a unidirectional overrunning clutch. The drive gear structure comprises a drive gear body, outer gear teeth, straight-toothed splines and gear grooves, wherein the outer gear teeth of the drive gear body are spirally arranged; the spiral angle of the outer gear teeth is 25-75 degrees; each gear groove is formed between each two adjacent outer gear teeth; the straight-toothed splines are arranged in the drive gear body and are matched with an output shaft; a first inclined surface and a second inclined surface which are mutually connected and mutually form an angle are arranged at the connecting part of a unilateral outline surface and the end surface of each outer gear tooth; each first inclined surface extends to the corresponding gear groove of the corresponding outer gear tooth; and each second inclined surface extends to the tooth tip of the corresponding outer gear tooth. The drive gear structure has a simple structure, is convenient in use, high in meshing efficiency, good in using smoothness and small in impact force and has the functions of start and stop with matching of the unidirectional overrunning clutch; and the service life of the drive gear structure is prolonged (the original service life is 30-50 thousand times, and now, the service life is prolonged to be larger than 300 thousand times).

Description

technical field [0001] The invention relates to the technical field of auto parts, and more specifically relates to a driving gear structure of a one-way overrunning clutch. Background technique [0002] The driving gear of the one-way device of the automobile starter is mainly used to mesh with the engine flywheel so as to drive the engine flywheel to rotate. At present, since the end face of the gear tooth of the drive gear is basically perpendicular to the profile surface of the gear tooth, the connection between the profile surface and the end face is relatively sharp, that is, there is no transition surface between the profile surface and the end face, which is not convenient for the tooth of the drive gear to be inserted into the The wheel groove of the engine flywheel or the teeth of the engine flywheel are inserted into the wheel groove of the drive gear for meshing, the combination efficiency is poor, and the stability is not good. Moreover, in the prior art, the e...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a one-way overrunning clutch driving gear structure, aiming to solve the problem of poor meshing effect with the engine flywheel caused by the straight teeth of the driving gear in the prior art, and the combination is unstable, which affects its service life

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