Motive-force assisted bicycle

摘要

A motive-force assisted bicycle comprises a pedal shaft (70) rotatable by a pedaling force from pedals (11), an assistant drive means (8) supported on a body frame (7), a force transmitting device (9) for combining and transmitting a force from said pedal shaft (70) with a force from said assistant drive meansto drive a resultant force shaft (86) which drives a wheel via a transmission means (12). Said force transmitting device and said resultant force shaft are provided at positions different to that of said pedal shaft.