| 摘要 |
A hub shaft 25 is inserted into a through hole 40 formed on a hub body 26, and a rotating shaft 35 of a motor 27 operates with the hub body 26 in an interlocked manner via a deceleration mechanism 45. The deceleration mechanism 45 includes a sun gear 46 formed on the rotating shaft 35, an annular gear 47 provided in the hub body 26, and planetary gears 48 engaged with the sun gear 46 and the annular gear 47. A support member 50 supporting the planetary gears 48 is provided on the motor 27 and includes a recess 54 opposed to the through hole 40 in the direction of an axis 28 of the hub shaft 25. A bearing member 59 is fit into the recess 54 of the support member 50, the bearing member 59 rotatably receiving the hub body 26. |
