| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent fall of the support shaft of a rolling member, and moreover, fall of the rolling member from a carrier. <P>SOLUTION: A continuously variable transmission 1 includes: a first rotary member 10; a second rotary member 20; a sun roller 30; and a carrier 40; which have a common first rotational center axis R1 and are relatively rotatable. Then, the continuously variable transmission 1 includes: a plurality of planetary balls 50 radially arranged to be held between the first and second rotary members 10 and 20; and a support shaft 51 having a second rotational center shaft R2, which is same as the center shaft of the planetary ball 50, and having both ends projected from the planetary ball 50; wherein the carrier 40 guides both ends of the support shaft 51, by the radial guide groove 43 of a first disk part 41 and the radial guide groove 44 of a second disk part 42, during tilting. In the continuously variable transmission 1, the guide grooves 43 and 44 are respectively opened on the outer peripheral surfaces of the first disk part 41 and the second disk part 42, and a groove width is wider than that at other than the end near the opening, concerning the end of groove side walls 43a and 44a, on which the support shaft 51 abuts by spin moment of the planetary ball 50, near the opening. <P>COPYRIGHT: (C)2012,JPO&INPIT |
