An electric auxiliary drive for bicycles includes an electric motor having a stator which is connected to a bicycle frame. A rotor is connected to a rotatable part of a bottom bracket of a bicycle on a left-hand side in a direction of travel. The rotor has a magnet. A control device adjusts the power of the electric motor with a control circuit arrangement. A torque sensor is connected to the control circuit arrangement. The rotor is arranged in a co-rotating housing which is connected to a pedal crank and which is arranged on a bottom bracket shaft in an interlocking manner. The stator is arranged in a housing connected to the bicycle frame and secured against rotation.
ELEKTRISCHER FAHRRAD-HILFSANTRIEB
ELECTRIC AUXILIARY BICYCLE DRIVE
ENTRAÎNEMENT ÉLECTRIQUE AUXILIAIRE D'UNE BICYCLETTE
2018-09-26
Patent
Electronic Resource
German
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Elektrischer Hilfsantrieb und elektrisch betriebenes Fahrrad
European Patent Office | 2022
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