| 摘要 |
PROBLEM TO BE SOLVED: To restrain increase of weight of a steel wheel to the minimum and secure strength and rigidity of a disk part 6 as well as improve its design characteristics. SOLUTION: At positions respectively fitted to a hub hole 11 and a plurality of bolt holes 15 of the disk part 6 composing the steel wheel, a reinforcement plate 19 provided with a circular hole 20 and a plurality of through holes 21, 21 is bonded/fixed to the disk part 6 by welding from the inner face side. COPYRIGHT: (C)2006,JPO&NCIPI |
