A powertrain for an electric bicycle has: an electric motor; a motor gear connected to the motor; a crankshaft for connecting to crank arms; an input shaft driven by the crankshaft; an input gear connected to the input shaft and driven by the motor gear; a plurality of first gears mounted to the input shaft; a countershaft; a plurality of second gears rotationally mounted to the countershaft, each second gear being driven by a corresponding first gear; a plurality of third gears rotationally mounted to the countershaft; an output shaft; a plurality of fourth gears mounted to the output shaft, each fourth gear being selectively driven by a corresponding third gear; a first shift assembly for selectively rotationally fixing any one second to the countershaft; a second shift assembly for selectively rotationally fixing any one third gear to the countershaft; and a drive sprocket driven by the output shaft.
POWERTRAIN FOR ELECTRIC BICYCLE
ANTRIEBSSTRANG FÜR EIN ELEKTROFAHRRAD
GROUPE MOTOPROPULSEUR POUR VÉLO ÉLECTRIQUE
2024-07-10
Patent
Electronic Resource
English