To provide a motor unit that can easily be reduced in the size of a case by reducing the width of the case and to provide an electric bicycle.SOLUTION: A motor unit 3 includes: a case 4; a motor 5 accommodated in the case 4 and having a motor rotation shaft 51 and a rotor 52 that rotates integrally with the motor rotation shaft 51; an input shaft 6; an output body 8; and a speed reduction mechanism 9. The input shaft 6 extends through the case 4 in the direction of the axis 600 and is disposed so as to be rotatable about the axis 600. The output body 8 extends through the case 4 in the direction of the axis 600 and is disposed so as to be rotatable about the axis 600. The speed reduction mechanism 9 is accommodated in the case 4, reduces the speed of rotation of the motor 5 and transmits the rotation to the output body 8. The speed reduction mechanism 9 includes a plurality of pairs (91, 92) of gears (911, 912; 921, 922) that mesh with each other. In at least one pair of the plurality of pairs of gears, respective central axes of rotations of the gears are orthogonal to each other.SELECTED DRAWING: Figure 3

    【課題】ケースの幅を短くしてケースの小型化を図りやす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と、ケース4内に収容され、モータ回転軸51と、モータ回転軸51と一体に回転するロータ52とを有するモータ5と、入力軸6と、出力体8と、減速機構9と、を備える。入力軸6は、軸線600方向にケース4を貫通して軸線600回りに回転可能に配置される。出力体8は、軸線600方向にケース4を貫通して軸線600回りに回転可能に配置される。減速機構9は、ケース4内に収容され、モータ5の回転を減速して出力体8に伝達する。減速機構9は、互いに噛み合う歯車(911、912、921、922)の対(91、92)を複数有する。複数の歯車の対のうち少なくとも一対は、各歯車の回転の中心軸が互いに直交する。【選択図】図3


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    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 :

    2023-07-05


    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 / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



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