Power-assisted vehicle coaxially middle-mounted motor and power-assisted bicycle

Abstract

The invention provides a power-assisted vehicle coaxial middle-mounted motor and a power-assisted bicycle, and relates to the technical field of power-assisted bicycles. The power-assisted vehicle coaxial middle-mounted motor comprises a shell, a central shaft core, an output structure, a power-assisted motor, a sun gear, a duplex planetary gear, an inner gear ring and a planet carrier, wherein the central shaft core is arranged in the shell, and the sun gear is connected to the power-assisted motor. The duplex planetary gear comprises a first planetary gear and a second planetary gear which are coaxial and fixed, and the first planetary gear and the second planetary gear are rotatably connected to the planet carrier. The first planetary gear is meshed with the sun gear, the second planetary gear is meshed with the inner gear ring, and the inner gear ring is fixed to the shell. The planet carrier can drive the output structure, and the central shaft core can drive the output structure.A power-assisted motor shaft core, the central shaft core, the sun gear, the planet carrier, the inner gear ring and the output structure are coaxially arranged. The invention further provides the power-assisted bicycle, and the coaxial middle-mounted motor is adopted in the power-assisted bicycle. According to the power-assisted vehicle coaxial middle-mounted motor and the power-assisted bicycle, the volume can be reduced and the power output performance can be increased.

Description

technical field [0001] The invention relates to the technical field of power-assisted bicycles, in particular to a coaxial central motor of a power-assisted bicycle and a power-assisted bicycle. Background technique [0002] An electric power-assisted bicycle, also known as a smart motorcycle, is a riding tool between a bicycle and an electric vehicle. According to the pedaling strength of the rider, the electric power-assisted bicycle controls the power-assisted motor to output power in proportion to assist riding. It is the product of people's pursuit of an efficient, convenient, healthy and environmentally friendly lifestyle. [0003] In the existing disclosed technology, the booster motors of the power assist system (PAS) can be divided into three categories according to the positions installed on the bicycle: front-mounted hub motors (the booster motors are installed on the front wheels of bicycles), mid-mounted motors (the booster motors are installed At the position ...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the technology of the mid-mounted motor is becoming more and more mature, and it is difficult to obtain obvious development in the technology of the mid-mounted motor, which makes it difficult to further develop the size, output power and integration degree of the mid-mounted motor.

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