| 摘要 |
PROBLEM TO BE SOLVED: To provide a traction drive device capable of suppressing difference between contact surface pressure of a ring roller and a planetary roller, and contact surface pressure of the planetary roller and a sun roller.SOLUTION: A transaction drive device 1 adjusts a curvature radius on an axial cross section of a ring roller 10 of the contact surface of the ring roller 10 pressure-welded to a planar roller 12, and a curvature radius on an axial cross section of a sun roller 11 of the contact surface of the sun roller 11 pressure-welded to the planar roller 12 so that difference between the contact surface pressure of the ring roller 10 and the planar roller 12 and the contact surface pressure of the planar roller 12 and the sun roller 11 is made small. Consequently, the difference between the contact surface pressure of the ring roller 10 and the planar roller 12 and the contact surface pressure of the planar roller 12 and the sun roller 11 can be suppressed.SELECTED DRAWING: Figure 1 |
