A central torque sensor motor of an electric power-assisted bicycle and a bicycle using the same

Abstract

The invention belongs to the technical field of bicycle torque sensing and discloses a central torque sensing motor for an electric power-assisted bicycle and a bicycle with the central torque sensingmotor. A torque sensing component is arranged on a center shaft gear capable of deforming under the torque action, and a signal output component adopts a contact type signal transmission structure. By arrangement of the torque sensing component on the center shaft gear of the electric power-assisted bicycle and structural optimization of the center shaft gear, the torque sensing component is capable of stably and sensitively detecting deformation of the gear and reflecting torque generated in a riding process through deformation quantity of the gear. By adoption of the contact type signal output component, torque information detected by the torque sensing component is fed back to a motor controller, and stability and reliability in signal transmission are achieved. Therefore, simple and compact structure, stability and sensitivity in torque detection and transmission and the like are realized.

Description

technical field [0001] The invention relates to an electric power-assisted bicycle, more specifically, to a torque sensor motor installed in the middle of the electric power-assisted bicycle and a bicycle using the same. Background technique [0002] Because of its brisk, labor-saving and pollution-free characteristics, electric power-assisted bicycles are increasingly being used in my country, and are gradually favored by consumers. When the electric power-assisted bicycle is riding on flat ground, the output power of the motor is very small, which can make people feel easy to ride and save power, but when going uphill, it can output a large current to make climbing a hill very labor-saving. In order to allow the drive motor of the electric power-assisted bicycle to adjust the output power according to the torsion force on the central shaft of the bicycle, almost all electric power-assisted bicycles are equipped with a central shaft torque sensor device. [0003] The main ...

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of the existing electric power-assisted bicycle mid-mounted motor, such as the complex structure of the torque sensing device, poor signal transmission stability and sensitivity, and provide a mid-mounted torque sensing motor for electric power-assisted bicycles and its application. Bicycles, adopting the technical solution of the present invention, set the torque sensor assembly on the center shaft gear of the electric power-assisted bicycle, and optimize the structure of the center shaft gear, so that the torque sensor assembly can detect the deformation of the gear stably and sensitively, and pass The amount of deformation of the gear reflects the magnitude of the torque generated during riding; at the same time, the contact signal output component is used to feed back the torque information detected by the torque sensor component to the motor controller, and the signal transmission is stable and reliable; it has a simpler and more compact structure. Stable and sensitive detection and transmission

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