Patent ID: 6740001
Filing Date: 2004-05-25
Classification: F16H

Abstract:
A toroidal continuously variable transmission comprising:an input shaft rotatable by a drive source and moveable along an axis of the input shaft with respect to a case of the transmission; a first cavity including a first input disk movable in a first direction along an axial direction of the input shaft and rotatable together with the input shaft and a first output disk opposed to the first input disk in the axial direction of the input shaft; a second cavity including a second input disk movable in a second direction along the axial direction of the input shaft and rotatable together with the input shaft and a second output disk opposed to the second input disk in the axial direction of the input shaft; a hydraulic loading mechanism including first and second hydraulic chambers arranged in the axial direction of the input shaft, the first hydraulic chamber being at least partially defined by a back surface of the first input disk movable in the first direction and a first disk member movable in the second direction together with the input shaft, the second hydraulic chamber being at least partially defined by a second disk member movable in the first direction together with the first input disk, and a first cylinder movable in the second direction together with the input shaft, and wherein the hydraulic loading mechanism is adapted to press the first and second input disks toward the first and second output disks, respectively, so that the input and output disks of the first cavity approach each other and the input and output disks of the second cavity approach each other when pressurized oil is fed into the hydraulic chambers; and an interlocking portion adapted to shift the second input disk toward the second output disk as the first input disk is shifted toward the first output disk by the hydraulic loading mechanism.