Electric vehicle compound gear

Abstract

The invention discloses an electric vehicle compound gear, and aims at providing the electric vehicle compound gear with the advantages of higher intensity and better vibration reduction and noise reduction effects. The electric vehicle compound gear comprises a plastic gear main body and a gear framework embedded on the gear main body, wherein the gear framework comprises a shaft sleeve, an annular support end plate and a plurality of first connecting posts, the annular support end plate is annularly arranged on the outer side surface of the shaft sleeve, the connecting posts are arranged on the support end part, an inner hole of the shaft sleeve forms a gear shaft hole, the annular support end plate is vertical to the axial line of the shaft sleeve, the first connecting posts are parallel to the axial line of the shaft sleeve, in addition, each first connecting post is uniformly distributed around the circumferential direction of the shaft sleeve, the shaft and each first connecting post are embedded in the gear main body, a plurality of circumferentially distributed plastic convex teeth are arranged on the outer peripheral surface of the gear main body, a plurality of circumferentially distributed metal convex teeth are arranged on the outer peripheral surface of the annular support end plate, and the plastic convex teeth and the metal convex teeth are in one-to-one correspondence to form a complete wheel gear.

Description

technical field [0001] The invention relates to a gear, in particular to a compound gear of an electric vehicle. Background technique [0002] At present, there are mainly two types of gears used in electric vehicles, one is gears made of metal, and the other is gears made of plastic; among them, gears made of metal are characterized by high strength, but their hardness is high, and vibration reduction and The noise effect is not good, and there is noise during work; the gear made of plastic material has low hardness, which has good vibration and noise reduction effects, but its strength is small. [0003] On the other hand, at present, the lubrication method of gears used in electric vehicles mostly adopts the method of external oil lubrication, that is, lubricating oil is added to the gear surface to lubricate the gears, for example: oil drip lubrication (drop lubricating oil onto the friction surface of the moving pair), Splash lubrication (splash lubricant onto the fric...

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Problems solved by technology

[0005] Another object of the present invention is to overcome the deficiencies in the prior art and provide an electric vehicle composite motor that can effectively improve the problem of poor gear lubrication and reduce the service life of the gear shaft due to failure of the lubrication system or insufficient oil in the lubrication system. gear

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