| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rear arch structure capable of reducing high speed booming noise while holding superior property with respect to weight and cost. <P>SOLUTION: A member side 1 having hat-shaped cross sectional shape and a member upper 2 are provided. The hat shape is gradually restricted toward a tip side and a flat shape part 2d having no hat shape is formed in a tip part on the tip side opposing to the member side 1 of the member upper 2. A part of the hat shape of the member upper 2 which is gradually restricted is fitted into the hat shape part of the member side 1 to realize a closed cross sectional shape of the fitted part. Width of a section for mounting a cab mount of the member upper 2 is enlarged more than width in the other section. A basic part bracket fixed to the member side 1 and a mount main body fixed to the basic part bracket and the member side 1 are provided in the width enlarged section. <P>COPYRIGHT: (C)2004,JPO |
