Airbag doors and interior panels for vehicles

Abstract

To reduce weight of a door section while enhancing bending rigidity of the door section formed during operation of an air bag device in an air bag door.SOLUTION: An air bag door (10) is provided by partitioning an instrument panel (1) having a front surface composed of a surface skin layer (7) by a breakage planned section (12) and a hinge section (14). A honeycomb-shaped reinforcement rib (42) for partitioning a plurality of recesses (44) is provided on a rear face of a door section (16) formed by breakage of the breakage planned section (12). An opening shape of each recess (44) is formed into a shape that each of a pair of corner sections opposed to each other in a hexagon is expanded outward into a projection shape. In an internal surface of each recess (44) in the reinforcement rib (42), a pair of underfill sections (46) constituting the expanded section (44a) of the recess (44) is formed to be opposed to each other in a direction along a rotation axis line (RA) of the hinge section (14).SELECTED DRAWING: Figure 5

Claims

1. An interior panel (1) whose surface is made of a skin layer (7) is provided with a section designated for fracture (12) and a hinge section (14), An airbag door is configured such that, upon activation of an airbag device (50) located on the back side of the interior panel (1), the portion to be ruptured (12) ruptures to form a door portion (16), and the door portion (16) rotates outward around the hinge portion (14) to open, On the back surface of the door portion (16), honeycomb-shaped reinforcing ribs (42) are provided to partition a plurality of recesses (44). The opening shape of the recess (44) is such that each of the two opposing corners of the hexagon is extended outward in a convex shape. On the inner surface of the recess (44) in the reinforcing rib (42), a pair of material-reducing portions (46) constituting the expanded portion (44a) of the recess (44) are formed so as to face each other in a direction along the rotation axis (RA) of the hinge portion (14). An airbag door characterized by the following features.

2. In the airbag door according to claim 1, The inner surface of the recess (44) formed by the missing portion (46) is formed in an arch shape. An airbag door characterized by the following features.

3. In the airbag door according to claim 1 or 2, The fracture-intended portion (12) is provided in an H-shape, having a central fracture-intended portion (12a) and a pair of side fracture-intended portions (12b) extending from both ends of the central fracture-intended portion (12a). The hinge portion (14) is provided in pairs at a position that sandwiches the central fracture portion (12a) between the pair of side fracture portions (12b), with the axis of rotation (RA) corresponding to the central fracture portion (12a) in the direction along the central fracture portion (12a). The door section (16) is a pair of door sections (16) each formed in a rectangular shape with the central planned break section (12a) as the longer side, and is configured to open from both sides. An airbag door characterized by the following features.

4. An airbag door (10) according to claim 1 or 2 is provided, A vehicle interior panel characterized by the following features.

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