| 摘要 |
An airbag apparatus for an automobile comprises a frame (35) and reinforcement members (36) vibration-welded to an instrument panel (32) with uniform strength and without thermal deformation or discolouration from the vibration welding. First weld ribs (352, 353) project from joining surfaces (351a, 351b) of a joint flange (351) of the frame (35) and second weld ribs (364) project from joining surfaces (363a) of reinforcements (363) of reinforcement members (36). The weld ribs are elongate in a direction (A) of vibration welding, with lengths three times or more than the amplitude of vibration welding. Passages (354, 355, 365) for flowing a cooling fluid along the first and second weld ribs (352, 353, 364) are provided on the joining surfaces (351a, 351b, 363a) of the joint flange (351) and the reinforcements (363). |
