Transmission apparatus for bicycle

Details Transmission apparatus for bicycle Transmission apparatus for bicycle

B - Operations, Transporting

62

M

B62M 9/06 (2006.01)

Patent

CA 2467880

To provide a transmission apparatus for a bicycle capable of performing a transmission operation even under an inertia running of the bicycle. The transmission apparatus T for a bicycle is comprised of the driving sprocket member 30 rotationally driven by the crank shaft 11; the multi-stage driven sprocket member 40 drivingly connected to the output shaft 24 always cooperated with the rear wheel and rotated; the chain 48 applied over the driving sprocket member 30 and the driven sprocket member 40; and the transmission changing-over mechanism M2 for replacing the chain 48 among a plurality of transmission sprockets 41 to 47. The driven sprocket member 40 is arranged to be always rotated in an integral manner, and the one-way clutch 32 for transmitting a rotation of the crank shaft 11 in its normal rotating direction to the driving sprocket member 30 is arranged in the power transmitting path ranging from the crank shaft 11 to the driving sprocket member 30.

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