| 摘要 |
PROBLEM TO BE SOLVED: To quickly burst a burst expected part at operating time and prevent easily cracking at normal time, by providing a reinforcing resin member in a reverse surface of a car interior side member main unit in an air bag door reverse side, and thinly forming a bending part to a surface side of the car interior side member main unit so that the reinforcing resin member divides the burst expected part of the car interior side member main unit. SOLUTION: A car interior side member main unit 21 is constituted by a hard resin, in a reverse side thereof, a reinforcing resin member 31 is provided, a burst expected part 15 opening an air bag door 11, when an air bag A is inflated, is provided. A divided part 22 formed along the burst expected part 15 is bitten by the reinforcing resin member 31, to be exposed by a surface of the car room side member main unit 21. The reinforcing resin member 31 is made as a resin softer than a hard resin of the car room side member main unit 21, to be provide in a reverse surface side of the air bag door 11 by smoothing bursting at operating time, an almost reverse V-shaped bending part 32 is formed so as to protrude to a side of the car interior side member main unit 21. The bending part 32, in the case of pressing in the vicinity of the burst expected part 15 from a surface of a car interior side member 10 at normal time, has large rigidity, so as to prevent cracking of the burst expected part 15. |
