| 摘要 |
PROBLEM TO BE SOLVED: To suppress dissimilar metal members which are mutually joined together at a plurality of positions in a specific direction from being strained in the specific direction.SOLUTION: A rear package tray 3 includes a side/rear panel 10 made of a steel plate and a center panel 20 made of an aluminum alloy plate having a larger coefficient of thermal expansion than the steel plate, and has a structure such that a rear part 14 of the side/rear panel 10 and a rear end part 24 of the center panel 20 are put one over the other and point-joined by spot welding at a plurality of positions in a vehicle width direction. The center panel 20 (rear end part 24) has bead parts 30, extending in a front-rear direction of a vehicle body 1, formed at positions each between mutually adjacent point-joining parts. |
