| 主权项 |
1. A transmission device comprising
a planetary gear mechanism including a plurality of pinion gears and a planetary carrier supporting a plurality of pinion shafts respectively inserted into the pinion gears, and also including a friction engagement element including a hub member fixed to the planetary carrier, wherein an end of each of the pinion shafts is provided with a shaft recess recessed inward in an axial direction from a surface of the end, and provided with an outer peripheral portion surrounding the shaft recess, the planetary carrier has a plurality of shaft support holes each supporting the end of the pinion shaft, and includes crimp receiving portions provided around the shaft support holes so as to receive part of the outer peripheral portions each expanded outward in a radial direction from the shaft recess, the hub member includes an annular flange fixed to a surface of the planetary carrier, which includes the crimp receiving portions, and the flange is provided with first exposing portions and second exposing portions arranged alternately with each other, and is also provided with a plurality of bridges, the first and second exposing portions exposing at least part of the shaft recesses and the outer peripheral portions of the pinion shafts inserted into the shaft support holes, and also exposing the crimp receiving portions of the planetary carrier, and the bridges connecting portions between the adjacent first and second exposing portions on an inner peripheral side of either of the first and second exposing portions. |
