To provide a power transmission unit for an electric bicycle which enables a rotation number of a rotating body to be freely set and thereby enables detection accuracy of a rotation state of an input shaft to be freely set, and to provide an electric bicycle.SOLUTION: A transmission member 41 is disposed at an outer periphery of an input shaft 35, coupled to the input shaft 35, and rotates with the input shaft 35. An output body 31 outputs rotational force of the transmission member 41. A one-way clutch 46 is disposed between the transmission member 41 and the output body 31 and allows transmission of the rotational force from the transmission member 41 to the output body 31 only when the transmission member 41 rotates in one direction relative to the output body 31. A rotary part is coupled to the transmission member 41 or the input shaft 35 and rotates with the input shaft 35. A rotating body 632 rotates in conjunction with the rotary part. A detection part 631 detects a rotation state of the rotating body 632. A rotation axis of the rotating body 632 is located at a position different from a rotation axis of the input shaft 35 in a direction orthogonal to an axis direction of the input shaft 35.SELECTED DRAWING: Figure 2

    【課題】回転体の回転数を自由に設定することで入力軸の回転状態の検出精度を自由に設定できる電動自転車用動力伝達ユニット、及び電動自転車を提供する。【解決手段】伝達部材41は、入力軸35の外周に配置され、入力軸35に結合されて入力軸35と共に回転する。出力体31は、伝達部材41の回転力を出力する。ワンウェイクラッチ46は、伝達部材41と出力体31の間に配置され、伝達部材41が出力体31に対し一方向に回転する時のみ、伝達部材41から出力体31への回転力の伝達を許容する。回転部は、伝達部材41又は入力軸35に結合され、かつ、入力軸35と共に回転する。回転体632は、回転部と連動して回転する。検出部631は、回転体632の回転状態を検出する。回転体632の回転軸は、入力軸35の軸方向と直交する方向において、入力軸35の回転軸と異なる位置にある。【選択図】図2


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    Title :

    POWER TRANSMISSION UNIT FOR ELECTRIC BICYCLE AND ELECTRIC BICYCLE


    Additional title:

    電動自転車用動力伝達ユニット、及び電動自転車


    Contributors:

    Publication date :

    2020-05-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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