US 12,269,409 B2
Airbag device
Ryota Ishigaki, Kanagawa (JP); Yutaka Nakajima, Kanagawa (JP); Yuka Miura, Kanagawa (JP); Ryo Takebayashi, Kanagawa (JP); and Masaru Habu, Kanagawa (JP)
Assigned to Autoliv Development AB, Vargarda (SE)
Appl. No. 18/577,084
Filed by Autoliv Development AB, Vargarda (SE)
PCT Filed Jun. 16, 2022, PCT No. PCT/JP2022/024230
§ 371(c)(1), (2) Date Jan. 5, 2024,
PCT Pub. No. WO2023/282017, PCT Pub. Date Jan. 12, 2023.
Claims priority of application No. 2021-114624 (JP), filed on Jul. 9, 2021.
Prior Publication US 2024/0286573 A1, Aug. 29, 2024
Int. Cl. B60R 21/207 (2006.01); B60R 21/233 (2006.01); B60R 21/2338 (2011.01)
CPC B60R 21/207 (2013.01) [B60R 21/233 (2013.01); B60R 21/2338 (2013.01); B60R 2021/23324 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An airbag device stored in a vehicle seat, comprising:
an inflator for generating expansion gas; and
an airbag for deploying near an upper end of the vehicle seat to protect the periphery of the head of an occupant, wherein
the airbag includes:
a first chamber for protecting one side of the occupant;
a second chamber connected to the first chamber and for protecting the front of the occupant's head;
a third chamber connected to the second chamber and for deploying from the front of the occupant's head across to the other side of the occupant, wherein the expansion gas flows from the second chamber into the third chamber through a first vent opening connecting the second chamber to the third chamber; and
a fourth chamber connected to the third chamber and for deploying at the other side of the occupant, wherein the expansion gas flows from the third chamber into the fourth chamber through a second vent opening between the third chamber and the fourth chamber.