| 摘要 |
A passenger restraint system is provided in which an airbag apparatus is activated according to a state of usage of a seat or a seatbelt apparatus, prediction of crash, and a state of accident together with the seatbelt apparatus. An airbag apparatus (20) includes an airbag (21), a vent hole (22) for discharging gas from the airbag (21), a vent hole cover (25) for covering the vent hole (22), and a constraining device (26) for releasably constraining the vent hole cover (25) in a state of covering the vent hole (22). In order to make an energy absorbing capability of the airbag apparatus (20) relatively low, constraint of the vent hole cover (25) by the constraining device (26) is continued, and the vent hole (22) is brought into a closed state. On the other hand, in order to make the energy absorbing capability of the airbag apparatus (20) relatively high, constraint of the vent hole cover (25) by the constraint device (26) is released to release the vent hole (22). |
