| 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, a reduction gear unit provided with a plurality of gears to decelerate a rotary force generated from the motor, and a ring gear configured to output the rotary force which is decelerated by the reduction gear, wherein a rib is formed on at least one of two lateral sides of the ring gear. |
