Suspension internal gear structure for reducing noise of high-speed motor of electric bicycle

Abstract

The invention provides a suspension internal gear structure for reducing noise of a high-speed motor of an electric bicycle. A secondary planet gear speed reducing mechanism is formed by intermeshing of a sun gear, a planet carrier and an internal gear, a sun axle is coupled with a spindle of the high-speed motor, and the internal gear is coupled with a shell, with a spoke flange, of the high speed motor. The suspension internal gear structure is characterized in that the internal gear is coupled with the shell of the high-speed motor in an elasticity manner, a plurality of bosses for transferring torque are arranged at one end of the motor shell, an elastic body is mounted on each boss and composed of a mating hole and an elastic body winged edge, and each mating hole is sleeved on the corresponding boss. A plurality of mounting holes for transferring torque are arranged on the internal gear correspondingly, and each mounting hole is matched with one elastic body for mounting and fixedly connected with the spoke flange on the shell of the high-speed motor of the electric bicycle. Accordingly the suspension internal gear structure is formed. By the suspension internal gear structure, noise can be reduced by about 20 decibels, degree of gear processing precision can be lowered, impact force in transmission is absorbed, impact wave is buffered, and further cost is reduced.

Description

technical field [0001] The invention relates to a planetary gear transmission mechanism, in particular to a low-noise reduction mechanism for a high-speed motor of an electric bicycle. Background technique [0002] Most of the electric bicycles in the prior art mostly use a slow motor with one-stage deceleration or no teeth. Compared with a high-speed motor, it is characterized in that the motor has a larger volume and a lower weight under the same output torque. It is heavy, but the internal structure is relatively simple. Because the rotating speed is relatively slow, the rotational noise of the motor is also small. In addition, the disadvantages of the technical solution of this motor configuration are also obvious: very heavy vehicle body and difficult manpower to ride, are a kind of very big deficiency. [0003] For this reason people expect to have a kind of electric bicycle that is lighter and more energy-saving, convenient as new means of transportation, so volume i...

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Problems solved by technology

[0005] In the prior art, there is no solution that can better solve the above problems

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