| 摘要 |
PROBLEM TO BE SOLVED: To provide a toroidal type continuously variable transmission capable of reducing abrasion at a contact part of a trunnion even when it is pressed to a trunnion support member as it receives a large traction force from a power roller. SOLUTION: This toroidal type continuously variable transmission is provided with an input shaft, an input disc and an output disc mutually separately and rotatably supported by the input shaft to be concentric to each other, at least a pair of trunnions 21 having a tilt rotation shaft 22 existing in a position in a perpendicular direction to the direction of the center axis of the input disc and the output disc to make tilt rotation around the tilt rotation shaft 22, a plurality of power rollers rotatably supported by the trunnions 21 to be held between traction surfaces of the input disc and the output disc, and a carrier having a radial bearing to support the tilt rotation shaft of the trunnion. On the tilt rotation shaft 22 of the trunnion 21, an end surface 21a that is integral with the trunnion 21 is provided, and part or all of the tilt rotation shaft 22 and the end surface 21a is set to have similar hardness to that of a rolling surface of the radial bearing. COPYRIGHT: (C)2005,JPO&NCIPI
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