| 摘要 |
<p>A stepless speed change device comprises power rollers (40) frictionally engaged between a pair of power wheels (30, 32) through inclined surfaces (40a, 40b) at the opposite ends and making an orbital motion around the center axis (C) of the power wheel while each rotating around its own axis, and planetary rollers (44) frictionally engaged with the peripheral surfaces of these power rollers and making an orbital motion around the center axis (C) of the power wheel while each rotating around its own axis. A guide surface (46) frictionally engaged with the peripheral surfaces of the planetary rollers supports the power rollers (40) urged in the direction of the center axis (C) of the power wheel by the pressing force produced by the pair of power wheels, through these planetary rollers (44), and holds the power rollers (40) and the planetary rollers (44) at peripherally equispaced intervals.</p> |
