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.


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    Titel :

    Electric power assist device for bicycles and bicycle


    Beteiligte:

    Erscheinungsdatum :

    24.12.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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



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