Patent ID: 8622420

Claim:
A curtain airbag apparatus comprising: a curtain airbag that is embedded, in a folded or rolled state, in an upper edge portion of at least one door opening of a vehicle body and deploys into a form of a curtain, the curtain airbag having a first deployment portion that deploys toward a lower side of a vehicle from the upper edge portion of the vehicle by inflating with gas supplied upon a side collision of the vehicle and upon a rollover of the vehicle, and a second deployment portion that deploys toward the lower side of the vehicle from the upper edge portion of the door opening by inflating with gas supplied at least upon a rollover of the vehicle, such that the second deployment portion is located in an area that does not overlap, as viewed laterally, an area in which the first deployment portion is located, the second deployment portion deploys into an elongated generally columnar shape, the generally columnar shape having an axis the extends substantially vertically when viewed laterally on the vehicle, the second deployment portion having an upper edge and a lower edge, as viewed laterally, the upper edge of the secondary deployment portion overlaps a front pillar of the vehicle, the lower edge of the secondary deployment portion is located lower than a beltline of the vehicle, the lower edge overlapping a front portion of a front side door of the vehicle; a gas generator that generates the gas to be fed to the first deployment portion and the second deployment portion; and an internal pressure difference creator that makes an internal pressure of the second deployment portion higher than an internal pressure of the first deployment portion at least upon a rollover of the vehicle.