An electric power assist device includes a housing for attaching to a frame structure of a bicycle; an electric motor provided in the housing; a rotating member rotatably supported by the housing, rotationally driven by the electric motor, and connected to a crankshaft/crankarm of the bicycle in a torque transmitting relationship; a rotational angle sensor provided in the housing and configured to detect a rotational angle of the electric motor or the rotating member; and a control unit for controlling operation of the electric motor based on the rotational angle detected by the rotational angle sensor, wherein the electric power assist device has a tilt angle detector for detecting a tilt angle with respect to a direction of gravity, the control unit having a calibrator for determining an absolute angle of the rotational angle detected by the rotational angle sensor based on an output signal from the tilt angle detector.


    Access

    Download


    Export, share and cite



    Title :

    Electric power assist device for bicycles and bicycle


    Contributors:

    Publication date :

    2024-12-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



    ELECTRIC POWER ASSIST DEVICE FOR BICYCLES AND BICYCLE

    TSUKAMOTO KENJI | European Patent Office | 2022

    Free access

    ELECTRIC ASSIST DEVICE FOR BICYCLES AND BICYCLE

    TSUKAMOTO KENJI / NAMIKI YOSHIHIRO / HONDA SATOSHI et al. | European Patent Office | 2019

    Free access

    ELECTRIC ASSIST DEVICE FOR BICYCLES AND BICYCLE

    TSUKAMOTO KENJI / NAMIKI YOSHIHIRO / HONDA SATOSHI et al. | European Patent Office | 2023

    Free access

    Power assist device for bicycles, and bicycle

    TSUKAMOTO KENJI | European Patent Office | 2024

    Free access

    POWER ASSIST DEVICE FOR BICYCLES, AND BICYCLE

    TSUKAMOTO KENJI | European Patent Office | 2022

    Free access