Motorcycle (4) comprising at least one rear wheel (8), at least two front steering wheels (12, 16), a handlebar (20), the front wheels (12, 16) being rotatable about respective lateral steering axes (L1, L2), according to lateral steering angles; the handlebar (20) being rotatable according to a central steering angle about a central steering axis (C), the front wheels (12, 16) being kinematically connected to the steering handlebar (20) by transmission means (36) that realise a transmission ratio defined by the ratio between the lateral steering angles and the central steering angle, characterised in that the transmission means (36) comprise a steering bar (40), kinematically connected to the handlebar (20), which directly links the front wheels (12, 16) together, wherein the transmission ratio between the front wheels (12, 16) and the steering handlebar (20) is variable as the central steering angle of the handlebar (20) varies.
L'invention concerne une motocyclette (4) comprenant - au moins une roue arrière (8), - au moins deux roues directrices avant (12, 16), - un guidon (20), - les roues avant (12, 16) pouvant tourner autour d'axes de direction latéraux respectifs (L1, L2), selon des angles de direction latéraux; le guidon (20) pouvant tourner selon un angle de direction central autour d'un axe de direction central (C), - les roues avant (12, 16) étant reliées cinématiquement au guidon de direction (20) par des moyens de transmission (36) qui réalisent un rapport de transmission défini par le rapport entre les angles de direction latéraux et l'angle de direction central, l'invention étant caractérisée en ce que : - les moyens de transmission (36) comprennent une barre de direction (40), reliée cinématiquement au guidon (20), qui relie directement les roues avant (12, 16) ensemble, - le rapport de transmission entre les roues avant (12, 16) et le guidon de direction (20) étant variable lorsque l'angle de direction central du guidon (20) varie.
MOTORCYCLE WITH TWO FRONT STEERING WHEELS AND A STEERING HANDLEBAR WITH VARIABLE STEERING RATIO
MOTOCYCLETTE COMPRENANT DEUX ROUES DIRECTRICES AVANT ET UN GUIDON DE DIRECTION À RAPPORT DE DIRECTION VARIABLE
2018-06-14
Patent
Electronic Resource
English
IPC: | B62K Fahrräder , CYCLES |
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