Patent ID: 6902510
Filing Date: 2005-06-07
Classification: F16H

Abstract:
1. A toroidal continuously variable transmission, comprising: a casing; an input rotary shaft rotatably supported in the interior of the casing; a pair of input side disks each including an input side inner surface having an arc-shaped section and respectively supported on the two portions of the input rotary shaft in such a manner that the respective input side inner surfaces are opposed to each other, the pair of input side disks being rotatable synchronously with the input rotary shaft; an output cylinder supported on the periphery of the middle portion of the input rotary shaft so as to be rotated relatively with respect to the input rotary shaft; a pair of output side disks each including an output side inner surface having an arc-shaped section and respectively supported on the periphery of the output cylinder so as to be rotated synchronously with the output cylinder, the output side inner surfaces of the output side disks being respectively opposed to the input side inner surfaces of the input side disks; an output rotation transmission member fixed to the outer peripheral surface of the middle portion of the output cylinder between the two output side disks so as to be concentric with the two output side disks; a plurality of support members interposed respectively between the input side inner surfaces of the input side disks and the output side inner surfaces of the output side disks, the support members each having a pivot shaft that extends in a twisted direction with respect to the input rotary shaft, the support members each disposed swingably with respect to the associated pivot shaft; power rollers each including a peripheral surface formed as a spherically-shaped convex surface and respectively rotatably supported on associated ones of the support members, the peripheral surfaces of the power rollers being contacted with the input side inner surfaces of the input side disks and the output side inner surfaces of the output side disks; and, a rolling bearing disposed between the input side inner surface of at least one of the input side disks and the output side inner surfaces opposed to the input side inner surface so as to be supported in the casing, and rotatably supporting the output cylinder.