The speed reducer comprises a motor and a speed reducer. The motor has a motor body, a rotating shaft, a first bearing and a second bearing. The speed reducer includes a wave generator, a flexible member, and an annular member. The wave generator has different outer diameters depending on the position in the circumferential direction. The flexible member has a flexible cylindrical portion into which the wave generator comes into contact from the inside in the radial direction. The cylindrical portion contacts the annular member from the inside in the radial direction. The flexible member rotates relative to the annular member in accordance with the rotation of the wave generator. The wave generator is connected to the rotating shaft at a position different from a position to which the rotor to which the motor is connected. The first bearing is disposed on the opposite side of the wave generator with respect to the rotor, and rotatably supports the rotating shaft. The second bearing is disposed on the radial inner side of the cylindrical portion of the flexible member and rotatably supports the rotating shaft.
减速装置包括马达及减速器。马达具有马达主体、转轴、第一轴承及第二轴承。减速器具有波动发生器、挠性构件及环状的环状构件。波动发生器根据周向的位置而具有不同的外径。挠性构件具有供波动发生器从径向内侧接触的挠性的筒状部。筒状部从径向内侧接触环状构件。挠性构件根据波动发生器的旋转而相对于环状构件相对旋转。波动发生器在与连接有马达的转子的位置不同的位置处与转轴连接。第一轴承相对于转子配置于波动发生器的相反侧,且将转轴支承为能旋转。第二轴承配置于挠性构件的筒状部的径向内侧,且将转轴支承为能旋转。
Speed reducer and bicycle
减速装置及自行车
2022-07-29
Patent
Electronic Resource
Chinese
European Patent Office | 2020
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