To provide a bicycle drive unit capable of improving a maintenance work easiness.SOLUTION: A drive unit 10 includes: a first power system that includes an electric motor 30; and a second power system that includes a crank shaft 61 to which pedals are attached. The second power system transmits the rotation of the crank shaft 61 to a rear wheel hub 41 via a second transmission shaft 27 and a first transmission shaft 21. A rear arm 50 and the second transmission shaft 27 are placed at the left side relative to a rear wheel 40. The first transmission shaft 21 is placed inwardly relative to a stator 31, and is coupled to the rear wheel hub 41 at the opposite side to the second transmission shaft 27.SELECTED DRAWING: Figure 6

    【課題】メンテナンス作業性を向上できる自転車の駆動ユニットを提供する。【解決手段】駆動ユニット10は、電動モータ30を有している第1動力系と、ペダルが取り付けられているクランク軸61を有している第2動力系とを有している。第2動力系は、クランク軸61の回転を、第2伝達軸27と、第1伝達軸21とを介して後輪ハブ41に伝える。リアアーム50と第2伝達軸27は、後輪40に対して左方に配置されている。第1伝達軸21はステータ31の内側に配置され、第2伝達軸27とは反対側で後輪ハブ41に連結されている。【選択図】 図6


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    Title :

    BICYCLE AND BICYCLE DRIVE UNIT


    Additional title:

    自転車と、自転車の駆動ユニット


    Contributors:

    Publication date :

    2020-02-06


    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 / B62K Fahrräder , CYCLES



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