| 摘要 |
<p>A stationary part (3, 23) and a rotary part (2; 22) of a bicycle drive assistance motor extend circumferentially in coaxial ring shaped areas leaving an opening (4; 24) centrally within the ring-shaped areas for accommodating at least a portion of a hub (12; 32) of a bicycle wheel (11; 31) or at least a portion of a pedal drive gear mechanism inside a hub of a bicycle wheel. Combinations of such a motor and an internal multi-gear drive mechanism in a hub of a bicycle wheel are also described.</p> |
