| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transmission device which can be driven with excellent power transmission efficiency. <P>SOLUTION: The transmission device has a stepless transmission 2 including: the first and the second rotary members 10, 20 capable of relatively rotating around the first central shaft A1 as a center; a sun roller 30; planet balls 50 of multiple number disposed radially on an outer circumference of the sun roller 30, and pinched between the first and the second roller members 10, 20; a support shaft 51 having the second central shaft A2 and supporting the planet ball 50 rotatably; a tilting mechanism 60 for tilting each second central shaft A2 toward the first central shaft A1 with the planet ball 50 and the support shaft 51; and a carrier 40 for supporting each planet ball 50 through each support shaft 51. When the angle made by a base line LO and a line L1 connecting the gravity center G of the planet ball 50 and a contact point P1 and the angle made by the base line LO and the gravity center G and a line L2 connecting the gravity center G and a contact point P2 are defined as a contact angle θ, and the angle made by the second central shaft A2 to a line L3 is defined as a tilting angle α, the tilting mechanism 60 controls so that the tilting angle α falls within the range of -¾θ¾≤α≤¾θ¾. <P>COPYRIGHT: (C)2013,JPO&INPIT |
