| 摘要 |
An airbag device includes an outer shell forming an airbag and having a vent hole, a restriction member for restricting gas flow through the vent hole, a first chamber having the vent hole, a second chamber, the inner panel partitioning the airbag into the first and second chambers and having a communication portion, and a tether member for connecting the restriction member and the inner panel. Gas is introduced into the first chamber and then into the second chamber. When the first chamber is filled with gas and the inner panel is tensioned, the tension exceeding a predetermined value is applied to the restriction member so that the vent hole is substantially closed. When the first chamber is not filled with gas and the inner panel loosens, the tension applied to the restriction member does not reach the predetermined value so that the vent hole is opened.
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