The invention discloses a built-in motor and an electric power-assisted bicycle, and relates to the field of electric bicycles. The built-in motor comprises a case, a stator, a rotor assembly, a sun gear, a planetary gear assembly, a first clutch assembly, a second clutch assembly and a middle shaft, wherein the stator is fixedly connected with the case; the rotor is coaxially and rotatably arranged in the stator; the sun gear fixedly penetrates through the rotor and is rotationally connected with the case. The planetary gear assembly comprises an inner gear ring, duplex planetary gears meshedwith the inner gear ring and a planetary carrier connected with the duplex planetary gears, the inner gear ring is fixedly connected with the case, the duplex planetary gears are meshed with the sungear, and the planetary carrier is rotationally connected with the sun gear and fixedly connected with the duplex planetary gears; the first clutch assembly is fixedly connected with the planet carrier; the second clutch assembly is in transmission connection with the first clutch assembly; the middle shaft extends in the axial direction of the sun gear and is connected with the second clutch assembly. By adopting the planetary gear assembly, the built-in motor is light in weight and small in size, and the torque of the motor can be improved while the rotating speed of the motor is reduced.
本发明公开了一种中置电机及电动助力自行车,涉及电动自行车领域。该中置电机包括机壳、定子、转子组件、太阳齿、行星齿轮组件、第一离合器组件、第二离合器组件和中轴,其中定子与机壳固接;转子同轴且转动设置于定子内部;太阳齿固定穿设于转子且与机壳转动连接;行星齿轮组件包括内齿圈,与内齿圈啮合的双联行星齿以及与双联行星齿连接的行星架,内齿圈与机壳固接,双联行星齿与太阳齿啮合,行星架与太阳齿转动连接且与双联行星齿固接;第一离合器组件与行星架固接;第二离合器组件与第一离合器组件传动连接;中轴沿太阳齿的轴向延伸且与第二离合器组件连接。通过采用行星齿轮组件,使该中置电机的重量轻体积小,且能够在降低电机转速的同时,提高电机扭矩。
Built-in motor and electric power-assisted bicycle
一种中置电机及电动助力自行车
2020-10-30
Patent
Elektronische Ressource
Chinesisch
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
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