| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an airbag door suppressing degradation of designability of an instrument panel, even when vibration-welded to the instrument panel with a thickness of 2.0 mm or less. <P>SOLUTION: The width of a head end of a joining schedule part 31 in a welding rib 3 of the airbag door 1 is made 3 mm or less. Also, bridging ribs 5 are provided in the airbag door 1 and the bridging ribs 5 are integrated to a plurality of welding ribs 3 neighboring to each other. An amount of heat per unit area applied on the airbag door 1 and the instrument panel 8 in vibration welding can be reduced and degradation of designability of the instrument panel 8 is suppressed by reducing the size of the head end of the joining schedule part 31. Also, falling deformation of the welding ribs 3 can be suppressed by supporting the welding ribs 3 by the bridging ribs 5. <P>COPYRIGHT: (C)2010,JPO&INPIT |
