A planetary-type bottom-bracket transmission for a bicycle or a pedelec (1), includes a pedal crank shaft (WAn), a transmission output shaft (WAb), further shafts (W1, W2, W3, W4, W5, W6, W7), and a first transmission shift group (3) and a second transmission shift group (4) that are coupled to each other in order to implement a plurality of gear ratios (G1, G2, G3, G4, G5, G6, G7, G8, G9, G10, G11, G12). The first transmission shift group (3) includes a two-step stepped planetary gear set (StRS) that is assigned a first shifting element (B1), a second shifting element (B2) and a fifth shifting element (F1I, F1II, F1III, F1IV, F1V, F1VI).


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    Title :

    Planetary-type bottom-bracket transmission for a bicycle or a pedelec


    Contributors:

    Publication date :

    2025-05-15


    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



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