BICYCLE TRANSMISSION SYSTEM Russian patent published in 2021 - IPC B62M11/04 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the field of mechanical engineering, in particular to bicycle transmissions. The bicycle transmission is mounted on the frame and contains a driven sprocket assembly with a rotation drive through a chain drive from the pedals with connecting rods of the input shaft of the drive sprocket assembly. The drive sprocket assembly contains a ring gear rigidly fixed to the input shaft and a carrier installed with the possibility of rotation and fixation on it in a given position. Rotation gears are fixed on the carrier and a figured groove is made. The drive sprocket clutch assembly consists of a base and guides. The base is fixed to the frame. A platform with a leading sprocket and a pin is installed in the guides. The opposite end of the pin is installed in the shaped groove of the carrier. The driving sprocket is made movable along the shaft with the possibility of fixing in a given position. On each gear and on the drive sprocket there are two protrusions facing each other.

EFFECT: increased compact-layout capabilities of the transmission unit.

5 cl, 7 dwg