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US 2025/0019035 A1Published application
Drive train with crankset and hub gear
OwnerWilfried DONNERinventor
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OwnerWilfried DONNERinventor
Estimating the term…
A drive train for a vehicle with a pedal drive with a bottom bracket shaft (1) of a crank drive, which comprises a first planetary gear (8, 9, 10) shiftable by clutches, the output of which is connected by a traction means to a rear wheel gearbox comprising a further gearbox shiftable by second clutches, wherein these two gearboxes are each to be shifted in such a correlated manner that gear transitions are approximately the same overall, characterized in that, in a first shift position, the bottom bracket shaft (1) is directly connected on an output side to a traction drive (ZG) by the first planetary gear (8, 9, 10) and/or, in addition, an auxiliary electric motor (EM) is connected by the planetary gear (8, 9, 10) to the traction drive (ZG) and that the gear transition of the first planetary gear (8, 9, 10) comprises each all finer-stepped gear transitions of a further gearbox (NG) arranged downstream via the traction drive (ZG) and/or in a second shift position of the planet carrier clutches and the sun gear wheel clutches (KPT, KSR) of the first gearbox, the auxiliary electric motor (EM) is coupled directly to the output shaft (3) via the reduction gearbox and further the bottom bracket shaft (1) is coupled to the output shaft (3) via this first planetary gear (8, 9, 10).
A drive train for a vehicle with a pedal drive with a bottom bracket shaft (1) of a crank drive, which comprises a first planetary gear (8, 9, 10) shiftable by clutches, the output of which is connected by a traction means to a rear wheel gearbox comprising a further gearbox shiftable by second clutches, wherein these two gearboxes are each to be shifted in such a correlated manner that gear transitions are approximately equal overall, characterized in that, in a first shift position, the bottom bracket shaft (1) is directly connected on an output side to a traction drive (ZG) by the first planetary gear (8, 9, 10) and/or, in addition, an auxiliary electric motor (EM) is connected by the planetary gear (8, 9, 10) to the traction drive (ZG) and that the gear transition of the first planetary gear (8, 9, 10) comprises each all finer-stepped gear transitions of a further gearbox (NG) arranged downstream via the traction drive (ZG) and/or in a second shift position of the planet carrier clutches and the sun gear wheel clutches (KPT, KSR) of the first gearbox, the auxiliary electric motor (EM) is coupled directly to the output shaft (3) via the reduction gearbox and further the bottom bracket shaft (1) is coupled to the output shaft (3) via this first planetary gear (8, 9, 10).
A drive train, in particular according to one of the preceding claims, characterized in that the downstream further gearbox, the rear wheel hub gearbox (NG), consists of two coupled planetary geares (8, 9, 10) one of which is connected by its planet carrier (PT1-2) to the traction drive (ZG) and the second of which is connected by its planet carrier (PT3, PT3-4) to a hub sleeve (NH) and the ring gear wheels (HR2-3) of both planetary geares (8, 9, 10) are fixedly connected and axially secured in position by lateral stops and the planet carriers (PT3, PT3-4) of both planetary geares (8, 9, 10) are axially and radially non-positively connected to a free centering bearing (ZL) and the couplings (K20, K30, . . . , K70) control the sun gear wheels (SR1 -SR4) or the planet carriers (PT1-2, PT3-4), wherein their respective gears are to be set in suitable shift combinations for a five-speed gearbox with 5 clutches (K20, K30, K40, K50, K70) or for a six- or seven-speed gearbox with 6 clutches (K20, K30, K40, K50, K60, K70).
Dependencies are inferred from the claim text.