Ultrathin wheel shaft type wheel hub motor

Abstract

Provided is an ultrathin wheel shaft type wheel hub motor, composed of an ultrathin wheel hub, a semiaxle motor, a planet secondary decelerator and a wheel fork frame. The semiaxle motor and the planet secondary decelerator are integrated to form a wheel shaft type wheel hub motor; the planet secondary decelerator is installed in the ultrathin wheel hub; the semiaxle motor is equivalent to a right wheel hub semiaxle. According to the invention, original structure contradictions of a mini type wheel hub motor which are difficult to solve are cleverly and effectively solved, thereby achieving the purposes of increasing a gear reduction ratio, improving motor revolving speed and efficiency, mitigating a motor weight and wheel hub crotch size, and simplifying a motor whole structure; an overrunning clutch flywheel in a reducing mechanism allows same sliding effects of an electric bicycle same and a bicycle; the weight of an ultrathin wheel shaft type reducing motor is less than two kilograms, and a crotch size is less than 70 mm. The ultrathin wheel shaft type wheel hub motor has the characteristics of high performance and low cost, and possesses outstanding features and market competition advantages.

Description

technical field [0001] The invention relates to a wheel hub motor of a light-duty electric bicycle, to be precise, an ultra-thin wheel shaft type hub motor. Background technique [0002] At present, in my country's electric bicycle market, the technical requirements for light electric bicycles are relatively high, and the performance indicators of the light hub motors used in them are higher, especially the weight index. Existing light electric bicycles generally use a mini The main structural disadvantage of this type of hub motor is: because the hub is small, the built-in planetary gear reduction mechanism and motor components can only be compactly set in the limited hub space, and the gear reduction ratio cannot be large. The speed of the motor cannot be increased, so the efficiency is not high enough, weight reduction is difficult, and the axial size of the hub is large. At present, the lightest mini motor is 2.5 kg, and the crotch size is 85cm, which has reached the limit...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing light-duty electric bicycle hub motors, the present invention introduces an ultra-thin hub motor, which completely changes the original structure of the mini hub motor. The planetary reduction mechanism is set in the hub, and the motor components are arranged On the wheel shaft, it cleverly and effectively solves the contradiction that is difficult to solve in the original structure of the existing mini wheel hub motor, and achieves the purpose of increasing the reduction ratio, increasing the motor speed, reducing the weight of the motor, reducing the size of the hub opening, and simplifying the overall structure of the motor. The invention has outstanding advantages and is a high-performance, low-cost ultra-thin hub motor with strong market competitiveness.

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