Curtain airbag device

A curtain airbag device to be attached to a roof side rail of a vehicle, and to be inflated and deployed to cover a three openings partitioned by the roof side rail and interior materials of a vehicle side portion, the curtain airbag device comprising:

• an inflator configured to generate gas;
• an airbag including, on one end side in a vehicle front-rear direction:
• an inflation portion configured to be inflated by the gas;
• a non-inflation region into which the gas does not flow, the non-inflation region having a two-dimensional shape when viewed from a vehicle interior side formed by a plurality of sides surrounding the non-inflation region such that an inflation capacity of the airbag device is reduced;
• and
• at least one fixing member located on an upper portion of the airbag, the fixing member being configured to fix the airbag to the roof side rail,
• wherein, in a state where the airbag is inflated and deployed, the non-inflation region covers a part of an endmost opening among the three openings, and the inflation portion is disposed to surround the non-inflation region, the endmost opening being the opening of the three openings located closest to an end of the vehicle in a vehicle longitudinal direction,
• two sides of the plurality of sides surrounding the non-inflation region are longer than 176.8 mm;
• and
• in a case where an impactor strikes the endmost opening, the impactor comes into contact with the non-inflation region, and
• in a state where the airbag is deployed and is not inflated, a length, in a vehicle vertical direction, of the lower inflation portion of the inflation portion is 15% or more of a length, in the vehicle vertical direction, of the endmost opening.

A curtain airbag device to be attached to a roof side rail of a vehicle, and to be inflated and deployed to cover three openings partitioned by the roof side rail and interior materials of a vehicle side portion, the curtain airbag device comprising:

• an inflator configured to generate gas;
• an airbag including, on one end side in a vehicle front-rear direction:
• an inflation portion configured to be inflated by the gas;
• a non-inflation region into which the gas does not flow, the non-inflation region having a two-dimensional shape when viewed from a vehicle interior side formed by a plurality of sides surrounding the non-inflation region such that an inflation capacity of the airbag device is reduced;
• and
• at least one fixing member located on an upper portion of the airbag, the fixing member being configured to fix the airbag to the roof side rail,
• wherein, in a state where the airbag inflates and deploys, the non-inflation region covers a part of an endmost opening among the three openings, and the inflation portion is disposed to surround the non-inflation region, the endmost opening being the opening of the three openings located closest to an end of the vehicle in a vehicle longitudinal direction,
• two sides of the plurality of sides surrounding the non-inflation region are longer than 176.8 mm;
• the inflation portion surrounds the non-inflation region;
• and the inflation portion includes a lower inflation portion located directly below the non-inflation region
• in a case where an impactor strikes the endmost opening, the impactor comes into contact with the non-inflation region, and the inflation portion includes, closer to an end than the non-inflation region, a stopper portion bent and sandwiched between opposing edge portions, in a vehicle vertical direction, of the interior materials, and
• in a state where the airbag is inflated and deployed and before the impactor strikes, a length, in the vehicle vertical direction, of the stopper portion is longer than a distance, in the vehicle vertical direction, between the opposing edge portions of the interior materials.