US 12,358,457 B2
Ceiling mounted airbag device and passenger restraint device
Toshiki Iwama, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Jun. 14, 2024, as Appl. No. 18/743,107.
Claims priority of application No. 2023-117120 (JP), filed on Jul. 18, 2023.
Prior Publication US 2025/0026298 A1, Jan. 23, 2025
Int. Cl. B60R 21/214 (2011.01); B60R 21/233 (2006.01); B60R 21/2338 (2011.01)
CPC B60R 21/214 (2013.01) [B60R 21/233 (2013.01); B60R 21/2338 (2013.01); B60R 2021/23384 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A ceiling mounted airbag device, comprising:
an airbag including a first chamber, which is installed at an upper side of a ceiling of a vehicle cabin and is configured to rupture the ceiling by being supplied with gas from an inflator during a vehicle head-on collision and to be expanded and deployed at a front side of a passenger seated in a vehicle seat, and the airbag including a second chamber that is configured to be expanded and deployed toward the passenger by being supplied with the gas from the first chamber; and
a tension member coupling the first chamber with a support section provided at the upper side of the ceiling, the tension member rupturing the ceiling and deploying accompanying expansion and deployment of the first chamber, and the tension member relatively pulling the first chamber toward an upper side at a rear side, in a vehicle front-rear direction, of the first chamber in a case in which the passenger, who begins to move toward a front side under inertia, is restrained by the second chamber,
wherein
a restriction tether is provided inside the second chamber to restrict a deployment length of the second chamber along the vehicle front-rear direction, and
the restriction tether is configured such that a restriction of the second chamber is released when the vehicle seat is positioned at a specific position or further toward a vehicle rear side than the specific position.