| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent deterioration of appearance quality in a design surface of an air bag door after it is left as it is at a high temperature and ensure rigidity of a door end part. SOLUTION: In this air bag door 10 provided with a burst part 7 of thin shape broken by an extending pressure of an air bag, a protrusive streak 16 protruded from a door reverse surface to be mutually opposed to a rack surface 8b of a drop-in part 8 is provided in a position in an internal peripheral side by the prescribed dimension A from a peripheral side surface 14 of an end part, in the end part 12 of a peripheral edge of the door arranged in the drop-in part 8 in an opening edge part of an instrument panel 1, and the end part 12 is formed in an almost T-shaped section. In this way, a contact area of the end part 12 abutting to a side surface 8a of the instrument panel 1 at the time left at a high temperature is decreased, stress F acting in a door central part is absorbed between the end part 12 and a door wall 5 by such a contact, and stress acting on the burst part 7 is reduced.</p> |
