| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for surely transmitting torque between an inner end part of a hub and an auxiliary ring over a long period. SOLUTION: A support member 37 is fitted in an inner end part inner peripheral surface of a hub 4b. Even if an inner end part of this hub 4b tries to be deformed in the direction for reducing a diameter by torque for making an automobile travel applied to the inner end part of this hub 4b, the support member 37 restrains deformation of the inner end part to thereby prevent slipping-out of recess/projection engagement of an inner end part outer peripheral surface of the hub 4b and a serration part 34 formed on an inner peripheral surface of an auxiliary ring 21a.
|
