Drive device for a bicycle driven by an electric motor

A drive device for a bicycle driven by an electric motor, comprising a main frame comprising a swing arm bearing, and a rear linkage element arranged at the swing arm bearing, the drive device comprising:

• a pedal crank as a first drive for providing a first drive force, the first drive comprising a first drive shaft,
• a center electric motor as a second drive for providing a second drive force, and
• an output element comprising an output shaft, the output element being configured to receive the first and/or second drive forces and transfer the same to the wheel of the bicycle to be driven,
• wherein the center axis of the output shaft is radially distanced from the center axis of the first drive shaft and the output shaft is arranged relative to the swing arm bearing such that a radial distance between the center axis of the swing arm bearing and the center axis of the output shaft is smaller than a radial distance between the center axis of the swing arm bearing and the center axis of the first drive shaft, wherein the rear linkage element is implemented as a multi pivot, comprising an instant center as an instantaneous center of rotation, and the rear linkage element is positioned at the main frame such that the bicycle comprises a suspension oblique angle α of 5° to 30°, or 10° to 20°, or 15° if the bicycle is subjected to a static load resulting in a negative spring deflection between 10% and 35% of the total spring deflection.