Toroidal continuously variable transmission

Abstract

A toroidal continuously variable transmission of the present invention comprises: input side disks () and output side disks () being supported concentric with each other such that the disks can rotate freely; a trunnion () that comprises end sections () on both ends on which tilt shafts () that are concentric with each other are provided, and a support beam section () that extends between both end sections (), the trunnion () being capable of pivotally displacing around the tilt shafts (); a thrust rolling bearing (); and a power roller () that is supported to the inside surface of the trunnion () by way of the thrust rolling bearing () such that it rotates freely; wherein the support beam section () comprises an inside surface having a cylindrical convex surface (); the thrust rolling bearing () comprises an outer race () having an outside surface with a concave section () that fits with the cylindrical convex surface () of the support beam section (), and a plurality of rolling bodies () that are located between the power roller () and a track of an outer race (); and the concave section () of the outer race () has side surface sections () on both sides in the width direction, fits with the cylindrical convex surface () by the cylindrical convex surface () coming in contact with both side surface sections ().