To facilitate a change of postures of a bicycle which is made in response to a rider's manipulation in a case where the bicycle runs on an uneven ground.SOLUTION: A bicycle 10 includes a bottom bracket 51 that supports a crank shaft 52, a motor unit 20, and a battery 13 attached to a down frame part 33 of a frame 30. The motor unit 20 is located behind the battery 13 above the bottom bracket 51. A lower end 13a of the battery 13 is located below a rotation center Cm of an electric motor 21.SELECTED DRAWING: Figure 4

    【課題】不整地を走行する場合における、ライダーの操作による自転車の姿勢変化を、容易化する。【解決手段】自転車10は、クランク軸52を支持しているボトムブラケット51と、モータユニット20と、フレーム30のダウンフレーム部33に取り付けられているバッテリ13とを有している。モータユニット20は、ボトムブラケット51の上方且つバッテリ13の後方に位置し、バッテリ13の下端13aは電動モータ21の回転中心Cmよりも下方に位置している。【選択図】図4


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    Title :

    ELECTRIC POWER-ASSISTED BICYCLE


    Additional title:

    電動アシスト自転車


    Contributors:

    Publication date :

    2025-04-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62K Fahrräder , CYCLES / 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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