| 摘要 |
PURPOSE:To prevent a planetary gear from seizing for lack of lubricant, by supplying the lubricant oil to the planetary gear through the inside of an output shaft of a second shaft, radial oil passages in a carrier supporting wall and axial radial holes in a carrier supporting shaft. CONSTITUTION:A planetary gear assembly 3 in a second planetary gear transmission mechanism 500 comprises a carrier 32, a sun gear 33, a ring gear 31 and a planetary gear 35 meshed with the sun gear 33. In order to supply lubricant to this planetary gear 35, the lubricant from a hydraulic pressure control device is fed through the hollow part 415 of an output shaft 1, radial holes 416 formed in the output shaft, an oil passage 417 in a carrier supporting wall, radial holes 418 in a carrier supporting shaft 323, an axial hole 419 and inner radial holes 319. Thus, since the lubricant is forced to be fed, lubrication to the planetary gear is sufficiently made, thereby no seizing is brought about. Further, the supply of the lubricant is made smooth since the radial holes are directed inward. Further, shavings and the like are trapped in the holes due to centrifugal force, and therefore, is prevented from being discharged toward the slide surface. |
