| 摘要 |
A drive unit for an electric bicycle, the drive unit including a motor configured to generate a rotary force to drive a wheel of the electric bicycle, and a reduction gear unit provided with a plurality of gears to decelerate a rotary force generated from the motor, wherein the motor is provided with a rotor (501) which has an accommodation space formed at a center thereof and a stator (506) installed to surround the rotor (501) while being spaced apart from the rotor (501) by a predetermined interval, and the reduction gear unit includes a first planet gear assembly (510) disposed on an accommodation space inside the motor (500) and connected to the rotor (501), and a second planet gear assembly (520) disposed outside the motor (500) and connected to the first planet gear assembly (510). |
