DRIVE MECHANISM FOR INFINITELY VARIABLE TRANSMISSION

摘要

A variator transmission comprises an input disc (10), an input disc drive shaft (20) on which the input disc is mounted, a transmission input shaft (28) for rotating the input disc drive shaft (20), an output disc (12) facing the input disc and arranged to be rotatable coaxially therewith, the input and output discs defining between them a toroidal cavity, a plurality of rollers (14, 16) located in the toroidal cavity, in rolling contact with the input and output discs (14, 16), means for varying the inclination of the plurality of rollers, means (40, 42, 44) for applying to one of the input disc (10) and the output disc (12) a first end load, proportional to the input torque applied to the variator by the transmission input shaft (28) and means (52, 54, 56) for applying a second end load, proportional to the output torque of the variator, to the same disc (10, 12) to which the first end load is applied.