To provide a motor unit and an electric bicycle in which a rotary shaft unit is inhibited from oscillating in a radial direction of a shaft.SOLUTION: A motor unit 3 comprises a case 4, a motor 5, an input shaft 6, an input body 7, an output body 8, and a speed reduction mechanism 31. The input shaft 6 is rotatably arranged while passing through the case 4 in a direction of an axis 60. The input body 7 is arranged along the outer peripheral surface of the input shaft 6 and rotates integrally with the input shaft 6. The output body 8 is rotatably arranged along the outer peripheral surface of the input shaft 6 and receives rotational force from the input body 7. The case 4 has a first bearing 45, a second bearing 46, and a third bearing 47. The first bearing 45 is positioned at one end side in the direction of the axis 60 and supports a rotary shaft unit 30 including the input shaft 6, the input body 7, and the output body 8. The second bearing 46 is positioned at the other end side in the direction of the axis 60 and supports the rotary shaft unit 30. The third bearing 47 is positioned between the first bearing 45 and the second bearing 46 in the direction of the axis 60 and supports at least one of the input body 7 and the output body 8.SELECTED DRAWING: Figure 7

    【課題】回転軸ユニットが軸径方向に振れにくい。モータユニット及び電動自転車を提供する。【解決手段】モータユニット3は、ケース4、モータ5、入力軸6、入力体7、出力体8、減速機構31を備える。入力軸6は、軸線60方向にケース4を貫通して回転可能に配置される。入力体7は、入力軸6の外周面に沿って配置され、入力軸6と一体に回転する。出力体8は、入力軸6の外周面に沿って回転可能に配置され、入力体7から回転力を受ける。ケース4は、第1軸受45、第2軸受46、第3軸受47を有する。第1軸受45は、軸線60方向の一端側に位置し、入力軸6、入力体7及び出力体8を含む回転軸ユニット30を支持する。第2軸受46は、軸線60方向の他端側に位置し、回転軸ユニット30を支持する。第3軸受47は、軸線60方向における第1軸受45と第2軸受46との間に位置し、入力体7又は出力体8の少なくとも一方を支持する。【選択図】図7


    Access

    Download


    Export, share and cite



    Title :

    MOTOR UNIT AND ELECTRIC BICYCLE


    Additional title:

    モータユニット及び電動自転車


    Contributors:

    Publication date :

    2019-09-19


    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



    ELECTRIC BICYCLE MOTOR UNIT AND ELECTRIC BICYCLE

    NISHIMORI MASATO / KAWAKAMI MASAFUMI / ADACHI RYOHEI et al. | European Patent Office | 2019

    Free access

    ELECTRIC BICYCLE MOTOR UNIT AND ELECTRIC BICYCLE

    NISHIMORI MASATO / KAWAKAMI MASAFUMI / ADACHI RYOHEI et al. | European Patent Office | 2021

    Free access

    MOTOR UNIT FOR ELECTRIC BICYCLE AND ELECTRIC BICYCLE

    NISHIMORI MASATO / KAWAKAMI MASAFUMI / ADACHI RYOHEI et al. | European Patent Office | 2019

    Free access

    MOTOR UNIT AND ELECTRIC BICYCLE

    KAWAKAMI MASAFUMI / OKUDA KENTO | European Patent Office | 2023

    Free access

    MOTOR UNIT AND ELECTRIC BICYCLE

    IDO SHIGERU / KAWAKAMI MASAFUMI / NAKANO TAKANORI | European Patent Office | 2023

    Free access