| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously reinforce a hinge attachment seat part of an upper part of a backdoor attachment opening part and an upper corner part of the opening part by a simple and light-weight structure.SOLUTION: A closed cross section structure is formed of a roof panel 4 and a roof back inner member 12, the closed cross section structure is joined to a side body 7 at an upper corner part 3 of an opening part, a reinforcement 13 is arranged and fixed over the side body 7 from a hinge attachment seat part 8 between the roof panel 4 and the roof back inner member 12, the reinforcement 13 is joined to a vertical wall 9 formed at a rear part of the roof panel 4 and the hinge attachment seat part, the reinforcement 13 is formed into a crank shape at a cross section, a mountain-folded ridge line 20L is formed at an upper side, a valley-folded ridge line 19L is formed at a lower side, and an interval H between the upper side and the lower side is set narrow in the vicinity of the hinge attachment seat part at the inside of a vehicle width direction, and set wide in the vicinity of the side body 7 at the outside of the vehicle width direction. |
