Patent ID: 8167760
Filing Date: 2012-05-01
Classification: F16H

Abstract:
1. A toroidal continuously variable transmission unit comprising: an input shaft into which a rotational torque is inputted; an input disc and an output disc which are supported on the input shaft concentrically and rotatably so that internal circumferential surfaces thereof are made to face oppositely each other; power rollers provided between the input disc and the output disc and adapted to transmit a rotational force of the input disc to the output disc at a predetermined speed ratio; and a power transmission member for implementing a power transmission between one of the input disc and the output disc, and itself, wherein an axial pressure, that is necessary to enable the toroidal continuously variable transmission unit to implement a traction drive, is used for the power transmission between the power transmission member and the one of the discs, wherein the power transmission between the power transmission member and the one of the discs is implemented by friction force such that there is no relative movement therebetween, and wherein the power transmission member and the one of the discs are brought into direct friction contact with each other.