US 11,981,283 B2
Rear-seat airbag
Isamu Nagasawa, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Jan. 18, 2023, as Appl. No. 18/098,197.
Claims priority of application No. 2022-023301 (JP), filed on Feb. 17, 2022.
Prior Publication US 2023/0256929 A1, Aug. 17, 2023
Int. Cl. B60R 21/21 (2011.01); B60R 21/233 (2006.01); B60R 21/239 (2006.01); B60R 21/231 (2011.01); B60R 21/26 (2011.01)
CPC B60R 21/21 (2013.01) [B60R 21/233 (2013.01); B60R 21/239 (2013.01); B60R 2021/23153 (2013.01); B60R 2021/23308 (2013.01); B60R 21/26 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A rear-seat airbag configured to expand and deploy inward of a vehicle from a door trim beside a rear seat, the rear-seat airbag comprising:
a first expansion air chamber configured to expand and deploy to a space facing leg parts of a passenger in the rear seat, the leg parts being above knees of the passenger; and
a second expansion air chamber configured to expand and deploy to a space between the first expansion air chamber and the passenger in the rear seat,
wherein a deployment shape of each of the first expansion air chamber and the second expansion air chamber is a triangular prism having a triangular cross section,
wherein an inflator is coupled to the first expansion air chamber,
wherein the first expansion air chamber and the second expansion air chamber are coupled to each other with a lower joint,
wherein the lower joint has a first vent hole, and
wherein the lower joint extends from a vicinity of a mid-section of the rear seat toward a backrest of a front seat.