| 摘要 |
PROBLEM TO BE SOLVED: To prevent sliding loss to improve transmitting efficiency by traction while moderating dimensional accuracy, in a continuously variable transmission including planetary rollers. SOLUTION: The continuously variable transmission includes an input shaft 20 having a center axis, a sun roller 30 to be rotated together with the input shaft, an output shaft 110, an output ring 60 to be rotated together with the output shaft, a shift ring 70, the plurality of planetary rollers 40 having first conical parts 41 arranged at equal spaces in a virtual conical plane having a peak on the center axis, and circumscribed on the sun roller and inscribed on the output ring, and second conical parts 42 inscribed on the shift ring, and a movable holder 50 for holding the plurality of planetary rollers rotatably around the axis and revolvably around the center axis. The plurality of planetary rollers include a movable planetary roller 40" held movably in the axial direction by the movable holder. Thus, the planetary roller 40" is self-aligned to an optimal position to reduce the loss of traction transmission and improve transmitting efficiency. COPYRIGHT: (C)2010,JPO&INPIT
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