US 12,420,737 B2
Curtain airbag device
Yuta Minami, Osaka (JP); Tetsuro Hamada, Osaka (JP); and Masanori Kato, Osaka (JP)
Assigned to ASHIMORI INDUSTRY CO., LTD., Settsu (JP)
Filed by ASHIMORI INDUSTRY CO., LTD., Osaka (JP)
Filed on Mar. 4, 2024, as Appl. No. 18/594,823.
Claims priority of application No. 2023-044429 (JP), filed on Mar. 20, 2023.
Prior Publication US 2024/0317171 A1, Sep. 26, 2024
Int. Cl. B60R 21/232 (2011.01); B60R 21/213 (2011.01); B60R 21/233 (2006.01)
CPC B60R 21/232 (2013.01) [B60R 21/213 (2013.01); B60R 2021/23316 (2013.01)] 8 Claims
OG exemplary drawing
 
1. 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 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;
the inflation portion surrounds the non-inflation region, and the inflation portion includes a lower inflation portion located directly below the non-inflation region; and
in a case where an impactor strikes the endmost opening, the impactor comes into contact with the non-inflation region, and the lower inflation portion of the inflation portion is sandwiched between a lower end of the impactor and the interior materials of the vehicle side portion.