An electrical assistance device for a bicycle includes an electrical machine, a drive roller, an actuatable positioner, and a controller. The electrical machine includes a support arm and a rotor shaft, which carries the drive roller via a free wheel. The support arm is mounted on the bicycle by a pivot shaft, which pivots between a drive position and a separated position. The actuatable positioner releasably holds the support arm in the separated position. The controller controls operation of the electrical machine and is able to cause the electrical machine to produce a motive torque in a direction toward a wheel of the bicycle driven in forward movement. The controller also is able to deliver an electrical pulse to the electrical machine to produce a reaction torque in a direction opposite to the motive torque to cause the support arm to pivot, causing actuation of the positioner.


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    Title :

    ELECTRIC ASSIST DEVICE FOR A BICYCLE AND BICYCLE EQUIPPED WITH SUCH A DEVICE


    Contributors:

    Publication date :

    2017-12-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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