Shafted drive for bicycle, has free wheel mounted at different operating points on bottom bracket shaft to function as shift clutch rotational in torque transmission or no-load operating conditions

摘要

A free wheel (3), including an inner ring (4) and an outer ring (5), is supported at different operating points on the shaft (2) of a bottom bracket (1). The free wheel functions as a shift clutch rotational in opposite directions and in torque transmission and no-load operating conditions. A pitman arm (7) connects the outer ring, while the inner ring is connected to the shaft end.