DRIVE DEVICE FOR A HYBRID ELECTRIC BICYCLE POWERED BY HUMAN STRENGTH AND AN ELECTRIC MOTOR

摘要

The invention relates to a drive device (10) for an electric motor and muscle powered hybrid electric bicycle, with a drive housing (20) which is fixedly mounted on a bicycle frame, one in the drive housing (20) rotatably mounted pedal crankshaft (30), wherein at the two A pedal crank (50, 52) is rotatably arranged ends of the pedal crankshaft (30), one in the drive housing (20) rotatably mounted summation hollow shaft (32), the summation hollow shaft (32) via a driver freewheel (60) with the pedal crankshaft (30) and via a motor freewheel (74) with a by an electric motor (70) driven gear (72) is connected, and wherein the summation hollow shaft (32) with a chainring (78) is rotatably connected, and in the drive housing (20) fixedly arranged sensor arrangement (90), wherein the sensor assembly (90) comprises a first torque sensor (94) cooperating with the pedal crankshaft (30) and a second Dr ehmomentsensor (96) which cooperates with the summation hollow shaft (32). With such a drive device, the accuracy of the torque measurement is increased and improves the control quality and the control of the electric motor.