| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a manufacturing cost by making it unnecessary to separately make decorative members.SOLUTION: Spokes 40 are arranged in such a manner that long and short circumferential intervals between the adjacent spokes 40 are alternately set, and a large opening with a large opening area and a small opening with a small opening area are alternately formed in a circumferential direction. A decorative member 80 is provided in an only the large opening, and a valve fitting hole 21 is formed in a rim 20 in a position to face the small opening. This makes it unnecessary to form a valve insertion hole in the decorative member 80.</p> |
