| 摘要 |
PURPOSE:To simplify working at a hub hole and improve slip preventability in such a way that bosses which are provided inwardly at the opening part of the center cap, etc. are engaged with engaging grooves which are provided around the outer periphery of a hub, and the outer periphery of a wheel cap is constituted so that it may be enveloped with the inner circumference of the hub hole. CONSTITUTION:Bosses 13c at the opening part 13 of a wheel cap 12 are tucked to be engaged with grooves 4a of a flange 4b to a hub 4. Then, fitting a hub hole 11 at the outer periphery of the wheel cap 12, a wheel 9 is attached to the hub 4, which is fixed with a hub bolt 2 and a hub nut 8a. Thus, the outer periphery of the wheel cap 12 is retained with the inner circumference of the hub hole 11 eliminating to enlarge the opening part 13. In result, while machining for the hub hole can be simplified, it embodies preventability against diametral enlargement on the opening rim and against slipping to the best certitude. |
