| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lubricating structure of a planetary gear device capable of stably securing a lubricating oil quantity to a pinion gear, and capable of reducing a dimension in the axial direction of a radial bearing. <P>SOLUTION: A sun gear 41 is integrally formed on an input shaft 3, and a stepped recessed part 33 having a large diameter part and a small diameter part is formed at a shaft end of the input shaft, and one end of a lubricating oil passage 34 is opened in the recessed part 33. A shaft 45 fitted to the recessed part 33 of the input shaft is formed in an axial part of a carrier 44, and an axial oil passage 70 and an inside oil passage 71 in the radial direction are formed in the carrier 44. A ball beating 57 is arranged between the large diameter part of the recessed part 33 and the shaft part 45. A seal ring 58 is arranged between the small diameter part of the recessed part 33 and the shaft part 45. Most of lubricating oil supplied via the lubricating oil passage 34 is supplied to the pinion gear 43 via the axial oil passage 70 and the inside oil passage 71 of the carrier 44. <P>COPYRIGHT: (C)2010,JPO&INPIT |
