| 摘要 |
An externally-developed air bag device is provided in which the air bag thereof is quickly and smoothly inflated in its entirety. Both end sides of the air bag 1 in the longitudinal direction that run over from the case 2 of the air bag 1, are folded back to the central side of the air bag along the short sides 2b of the case 2. Then, the portions running over from the long sides 2a of the case 2 are folded up in a bellows shape or in a roll shape, and are accommodated into the case 2. The gas from an inflator 4 substantially simultaneously inflates the central side of the air bag and both sides thereof in the longitudinal direction.
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