| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a back door in which the periphery of a hinge attachment part having a structure being more hard to deform than conventional one.SOLUTION: A back door 100 of an automobile comprises an inner panel 1, an outer panel 2, and a first reinforcement plate 3( reinforcement plate ) which is disposed between the inner panel 1 and the outer panel 2. The inner panel 1 provided two panel fitting holes 1a for fitting the back door 100 to a hinge 6 which is fixed to the rear end part of an automobile body, and the first reinforcement plate 3 is provided with two first reinforcement plate fitting hole 3a (reinforcement plate fitting hole) which are interposed on the panel fitting holes 1a. A first reinforcement plate 3 is made in such a shape as to extend along an upper frame 1b of the inner panel 1, and further, has a first convex shape part 9 extended along the upper frame 1b of the inner panel 1 and said two first reinforcement plate fitting hole 3a, and a second convex shape part 10 extended into the area between the first reinforcement fitting holes 3a from the first convex shape part 9.</p> |
