To provide a drive unit that can improve an exterior appearance of an electric bicycle and provide efficient heat radiation, and to provide an electric bicycle.SOLUTION: A drive unit 4 includes a motor 43, a drive circuit 42 and a heat radiation part 403. The motor 43 generates drive force for moving an electric bicycle 1 forward. The drive circuit 42 drives the motor 43. The heat radiation part 403 radiates heat from at least one of the drive circuit 42 and the motor 43. The motor 43, the drive circuit 42 and the heat radiation part 403 are disposed in a down tube 23 constituting a frame 2 of the electric bicycle 1 so as to be stored inside a projection surface of a cross section of the down tube 23. The heat radiation part 403 has an uneven shape.SELECTED DRAWING: Figure 1

    【課題】 電動自転車の外観を向上させることができ、かつ、効率の良い放熱を実現できる駆動ユニット、及び電動自転車を提供する。【解決手段】 駆動ユニット4は、モータ43と、駆動回路42と、放熱部403と、を備える。モータ43は、電動自転車1を前進させるための駆動力を発生する。駆動回路42は、モータ43を駆動する。放熱部403は、駆動回路42及びモータ43の少なくとも1つを放熱させる。モータ43、駆動回路42、及び放熱部403は、電動自転車1のフレーム2を構成するダウンチューブ23に、ダウンチューブ23の断面の投影面内に収まるように配置される。放熱部403は、凹凸形状である。【選択図】図1


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    Title :

    DRIVE UNIT AND ELECTRIC BICYCLE


    Additional title:

    駆動ユニット、及び電動自転車


    Contributors:

    Publication date :

    2021-04-22


    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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