| 摘要 |
A toroidal continuously variable transmission (10) comprises input disks (18a, 20a), output disks (18b, 20b) facing the input disks, power rollers (18c, 18d, 20c, 20d) gripped between the input disks and output disks, a pedestal (94) which supports the power rollers free to rotate, trunnions (17a, 17b, 27a, 27b) and roller bearing units (96) which support the pedestals on the trunnions so that they are free to slide in the direction perpendicular to the trunnion gyration axis (19a) and power roller rotation axis (15a), and further comprises projections (100) which limit the slide amount of a cage (96a) of the roller bearing unit relative to the trunnions. In this way, even if the power roller repeatedly slides relative to the trunnion (17a) in the direction perpendicular to the trunnion gyration axis (19a) and power roller rotation axis (15a), the cage (96a) does not protrude from the trunnion (17a), support of the load acting on the power roller is not insufficient, and the cage (96a) is prevented from interfering with the input and output disks as it would do if it protruded. |
