US 12,269,414 B2
Passenger seat airbag device
Kaname Tanaka, Kanagawa (JP); Kazuki Fujiwara, Kanagawa (JP); and Kazuhiro Abe, Kanagawa (JP)
Assigned to Autoliv Development AB, Vargarda (SE)
Appl. No. 18/695,907
Filed by Autoliv Development AB, Vargarda (SE)
PCT Filed Sep. 12, 2022, PCT No. PCT/JP2022/034083
§ 371(c)(1), (2) Date Mar. 27, 2024,
PCT Pub. No. WO2023/053922, PCT Pub. Date Apr. 6, 2023.
Claims priority of application No. 2021-163134 (JP), filed on Oct. 1, 2021.
Prior Publication US 2024/0409057 A1, Dec. 12, 2024
Int. Cl. B60R 21/233 (2006.01); B60R 21/205 (2011.01); B60R 21/239 (2006.01)
CPC B60R 21/233 (2013.01) [B60R 21/205 (2013.01); B60R 21/239 (2013.01); B60R 2021/23324 (2013.01); B60R 2021/2395 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An airbag device stowed in an instrument panel of a vehicle to protect an occupant in a passenger seat, the airbag device comprising:
an inflator for generating expansion gas; and
an airbag connected to the inflator that expands and deploys toward an occupant side by gas released from the inflator, the airbag including:
a main chamber positioned in an area including the corresponding to a front of an occupant properly seated during deployment of the airbag;
a sub chamber connected to at least one side surface of the main chamber, the sub chamber, when deployed and viewed from above, forming a roughly triangular shape including a first side on the occupant side, a second side at a boundary portion with the main chamber, and a third side forming a side part of the airbag, wherein a surface of the main chamber and the first side form generally a same impact surface;
an inner vent through which gas flows formed in the boundary portion of the main chamber and the sub chamber; and
a check valve for opening and closing the inner vent.