| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress a slide of balls possessed by a loading mechanism which uses a ball cam, in a friction roller type reduction gear having the loading mechanism.SOLUTION: A loading device 7 employed in a friction roller type reduction gear has: a first sun roller 4a which is attached to an input shaft of the friction roller type reduction gear, and movable with respect to the input shaft in an axial direction; a linear first cam groove 17 formed at an end face of the first sun roller 4a; a cam plate 15 attached to the input shaft while opposing the first cam groove 17 side of the first sun gear 4a; and a linear second cam groove 18 formed at a face of the cam plate 15 while opposing the first cam groove 17; and balls 16 arranged between the first cam groove 17 and the second cam groove 18.</p> |
