FOUR-STAGE BICYCLE TRANSMISSION Russian patent published in 2016 - IPC B60K17/08 F16H3/91 B62M11/06 

FIELD: transport.

SUBSTANCE: invention relates to four-stage bicycle transmission. Four-stage bicycle transmission comprises a gearbox with coaxial input and output shafts therein, intermediate shaft is parallel to them. Three pairs of external engagement gears are arranged on the shafts, strike clutches are arranged between the gears. Transmission housing is fastened on the bicycle frame. Pedal cranks are fixed on input shaft. Three gears are fastened on the intermediate shaft, they are engaged with the gears installed freely: two on input shaft and one on the tubular output shaft freely installed on the input shaft. Gear rim with a three-position strike clutch is fastened between the input shaft gears. Second gear rim with the three-position strike clutch is fastened on the inner end of the tubular output shaft. Drive sprocket of chain transmission is fastened on the outer end of the tubular output shaft.

EFFECT: expansion of vehicle operational properties.

1 cl, 3 dwg