DRIVING DIRECTION CHANGING APPARATUS OF BICYCLE HUB
A driving direction changing apparatus of a rear hub of a bicycle, having a driving portion and a driving direction changing portion, which is capable of always outputting driving force in only one direction, that is, forward, by receiving the forward and rearward driving force of a pedal shaft, is provided. The driving direction changing apparatus includes: a driving portion having a driven sprocket housing movably connected to a hub shaft, a plurality of first and second clutch groups installed at the outer circumference of the leading end of the driven sprocket housing, a first carrier for supporting the first and second clutch pin groups, a clutch housing for driving a hub shell by the expansion force caused by the frictional force of the first clutch pin group, and a first separation preventing member for preventing the clutch housing from being separated; a driving direction changing portion for changing the driving direction by using a second operating lever installed at the driving portion; and a multi-stage transmission portion connected to the driving direction changing portion by a spline, for performing transmission by using the second operating lever.