| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a friction type planetary power transmission capable of changing pushing force for pushing elements. <P>SOLUTION: In the friction type planetary power transmission, four planetary rollers 22A-22D are arranged on the circumference of a sun roller 16 so as to keep in contact with the sun roller 16, and a ring 28 is arranged on the circumference of the planetary rollers. Four planetary rollers are supported by a carrier so as to take first arrangement where contacts 36A-36D with the ring 28 become a square 38 and second arrangement with the ring 28 where contacts 40A-40D become a rectangle 42. The first square arrangement has a larger amount of deformation of the ring rather than the first rectangle arrangement, and force (pushing force) of the ring acted on the planetary roller becomes larger. The pushing force can be changed by using this changed deformation. <P>COPYRIGHT: (C)2012,JPO&INPIT |
