US 12,351,121 B2
Seat airbag device for vehicle
Sang Won Hwangbo, Yongin-Si (KR); and Choong Ryung Lee, Yongin-Si (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Oct. 13, 2023, as Appl. No. 18/486,239.
Application 18/486,239 is a continuation of application No. 17/461,122, filed on Aug. 30, 2021, granted, now 11,820,311.
Claims priority of application No. 10-2020-0113324 (KR), filed on Sep. 4, 2020.
Prior Publication US 2024/0034265 A1, Feb. 1, 2024
Int. Cl. B60R 21/207 (2006.01); B60R 21/231 (2011.01); B60R 21/233 (2006.01); B60R 21/2338 (2011.01); B60R 21/261 (2011.01)
CPC B60R 21/207 (2013.01) [B60R 21/233 (2013.01); B60R 21/2338 (2013.01); B60R 21/261 (2013.01); B60R 2021/23107 (2013.01); B60R 2021/23386 (2013.01); B60R 2021/2612 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A seat airbag device stored in a side portion of a vehicle seat of a vehicle, the seat airbag device comprising:
a main chamber configured to be deployed in a first direction toward a front portion of the vehicle to cover a side of an occupant seated at the vehicle seat when injected with gas;
a sub-chamber connected to a front end portion of the main chamber, comprising a first connection portion connected to the main chamber, and configured to deploy in a second direction intersecting the first direction when the gas is injected from the main chamber via the first connection portion; and
an expansion portion disposed between a lower portion of the front end portion of the main chamber and a lower portion of the sub-chamber, comprising a second connection portion connected to the sub-chamber, and configured to expand only when the gas is injected from the sub-chamber via the second connection portion such that the sub-chamber and the expansion portion are deployed in order.