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Electric power-assisted bicycle and drive system therefor

  • US 10,246,161 B2
  • Filed: 06/27/2017
  • Issued: 04/02/2019
  • Est. Priority Date: 06/28/2016
  • Status: Active Grant
First Claim
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1. A drive system for an electric power-assisted bicycle, comprising:

  • a first sensor for detecting pedaling force applied to a pedal from a rider;

    a second sensor for detecting rocking of a bicycle body in a lateral direction;

    an electric motor that assists drive of a drive wheel driven by pedaling of the rider; and

    a controller that controls the electric motor based on a pedaling force, whereinthe controller has a first mode and a second mode as control modes of the electric motor, the first mode is executed in a normal-pedaling mode, the second mode is executed when the controller determines based on at least output of the second sensor that the rider pedals the bicycle while rocking the bicycle body in the lateral direction, and the controller executes different control in the second mode from that in the first mode to assist the drive of the drive wheel.

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