US 12,187,217 B2
Airbag device and passenger protection device
Mitsuyoshi Ohno, Miyoshi (JP); Takeshi Yamamoto, Toki (JP); Toshiki Iwama, Toyota (JP); Yoshito Kusuhara, Ichinomiya (JP); and Tsutomu Ishii, Ichinomiya (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Sep. 13, 2023, as Appl. No. 18/367,639.
Claims priority of application No. 2022-165756 (JP), filed on Oct. 14, 2022.
Prior Publication US 2024/0123933 A1, Apr. 18, 2024
Int. Cl. B60R 21/207 (2006.01); B60R 21/233 (2006.01); B60R 21/2338 (2011.01); B60R 21/264 (2006.01); B60R 21/00 (2006.01); B60R 21/013 (2006.01)
CPC B60R 21/207 (2013.01) [B60R 21/233 (2013.01); B60R 21/2338 (2013.01); B60R 21/264 (2013.01); B60R 2021/0004 (2013.01); B60R 2021/006 (2013.01); B60R 21/013 (2013.01); B60R 2021/2076 (2013.01); B60R 2021/2078 (2013.01); B60R 2021/23308 (2013.01); B60R 2021/23388 (2013.01); B60R 2021/2642 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An airbag device, comprising:
an inflator that generates gas during a vehicle collision; and
an airbag that is supplied with the gas generated by the inflator, and that inflates and deploys from a seat rear side of a vehicle seat toward a seat front side via a seat upper side,
wherein, in an inflated and deployed state, the airbag includes:
a pair of front-rear chambers extending in a seat front-rear direction via left and right sides of a head of a passenger seated in the vehicle seat, and
an airbag body that is in communication with the pair of front-rear chambers, that is disposed at a seat front side of the passenger between the pair of front-rear chambers, and that is compression deformed in a state supported by the pair of front-rear chambers during restraint of the passenger, and
wherein the airbag is configured such that, in an inflated and deployed state, entry of at least the head of the passenger into a gap between the front-rear chamber and the airbag body is suppressed during a latter half of restraining the passenger,
wherein the airbag includes:
a left-right pair of upper tethers that couple the pair of front-rear chambers to upper portions of the airbag body, and
a left-right pair of lower tethers that couple the pair of front-rear chambers to lower portions of the airbag body, and
wherein at least the lower tethers are planar tethers having a substantially triangular shape configured with left-right symmetrical shapes to cover the gap.