| 摘要 |
PROBLEM TO BE SOLVED: To regulate the axial movement of a cylindrical body relative to an outside member more reliably, while enabing retro-fitting of the cylindrical body constituting a hollow part.SOLUTION: A gear device 30 includes a hollow part 31. The hollow part 31 is structured of a cylindrical body 76, and the cylindrical body 76 is axially fixed to a second carrier 42, which is disposed radially outside of the cylindrical body 76, through a ring-like member 80. The cylindrical body 76 and the second carrier 42 respectively include a step part 77 and a step part 42A having shoulder parts 76B, 76C which abut on the ring-like member 80 in the axial direction. In the ring-like member 80, the axial rigidity thereof is higher than the radial rigidity thereof. |
