Harmonic reducer of electric bicycle driver

Abstract

The invention discloses a harmonic reducer of an electric bicycle driver. The harmonic reducer comprises a shell, a harmonic generator, a flexible wheel shaft sleeve, a harmonic flexible wheel and a harmonic rigid wheel. The harmonic generator, the flexible wheel shaft sleeve and the harmonic flexible wheel are connected in sequence in a sleeved mode and located in the shell. One end of the harmonic flexible wheel is arranged on the outer ring of the harmonic generator through a bearing, and the harmonic rigid wheel is fixed on the inner ring of the shell and located on the outer ring of one end of the harmonic flexible wheel. The inner ring of one end of the flexile wheel shaft sleeve is arranged on the outer ring of one end of the harmonic generator through a bearing, and the other end of the flexible wheel shaft sleeve is arranged on the inner ring of a shaft diameter section of the harmonic flexible wheel. The harmonic reducer further comprises a power output shaft which is arranged on the outer ring of the shaft diameter section of the harmonic flexible wheel, and the end face of one end of the power output shaft is fixedly connected with the end face of the harmonic flexible wheel through a hinge pin and a screw. The power output shaft and the outer ring of the other end of the power output shaft are connected with the inner ring of the shell and the inner ring of the open end of the shell respectively through bearings. According to the harmonic reducer, the defects of a traditional harmonic reducer are overcome, breakage of the shaft diameter section of the harmonic flexible wheel is avoided, the service life of the reducer is prolonged, and the bicycle riding safety is ensured.

Description

technical field [0001] The invention relates to a harmonic speed reducer for an electric bicycle driver. Background technique [0002] As far as the driving motor of electric bicycles is concerned, the rated speed of the motor is divided into three categories, namely high-speed motor, medium-speed motor and low-speed motor. The higher the rated speed of the motor, the smaller the volume, the lighter the weight, the higher the efficiency and the lower the cost. Low, but generally electric bicycles run at low speeds. If a high-speed motor is used, a reducer is required. The reduction ratio, volume, efficiency, and cost of the reducer are one of the decisive factors for the performance and price of the bicycle driver. At present, most electric bicycles are directly driven by low-speed motors without mechanical deceleration mechanisms. They have low technical content, low efficiency, high cost, large volume and heavy weight. In recent years, electric bicycles have adopted a lar...

AI Technical Summary

Problems solved by technology

Therefore, there are certain defects in the traditional harmonic reducer structure

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