Central axis sensor system and electric assist bicycle

Abstract

The invention relates to the technical field of transportation machines, in particular to a center shaft sensor system and an electric power-assisted bicycle. The system comprises a left center shaft, a right center shaft, an elastomer and a torque sensor, wherein one end of the left center shaft is connected with one end of the right center shaft; the elastomer is arranged on the left center shaft in a sleeving manner; the torque sensor is arranged on the elastomer; the other end of the left center shaft and the other end of the right center shaft are respectively connected with a pedal crank. When a user actually outputs travelling power, the output powder is detected by the torque sensor through deformation of the elastomer and drives the electric power-assisted bicycle to travel, thus the measurement accuracy of the torque sensor is improved, the application of the user is facilitated, and the safety of the electric power-assisted bicycle is also improved. In addition, the elastomer is only arranged on the left center shaft, and the length of the elastomer can be effectively shortened, so that a torque journey of the elastomer is shortened; even if violent trampling occurs, irreversible deformation which causes reduction of detection precision is unlikely to occur.

Description

technical field [0001] The invention relates to the technical field of traffic machinery, in particular to a central axis sensor system and an electric power-assisted bicycle. Background technique [0002] An electric power-assisted bicycle refers to a mechatronic transportation tool that uses a battery as an auxiliary energy source on the basis of an ordinary bicycle, and is equipped with operating components such as a motor, a controller, a battery, a handlebar, and a brake handle, as well as a display instrument system. [0003] The electric power-assisted bicycle in the prior art includes a torque sensor arranged on the central axis of the bicycle, a wireless signal transmitter relatively fixed to the central axis, and a wireless signal receiver, which is arranged on the fixed At a position near the center axis of the bicycle body, the wireless signal transmitter is used to receive the sensing signal sent by the moment sensor, and then send it to the wireless signal rece...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a central axis sensor system and an electric power-assisted bicycle to solve the problems in the prior art that the actual situation of pedaling cannot be accurately judged, the error of assisting power is prone to occur, and the strain sleeve is easily deformed, resulting in inaccurate measurement. Accurate, inconvenient to use, and technical problems with poor safety performance

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