An airbag equipped with a sub-chamber may include a main chamber expanding by being injected with gas in a collision, and a sub-chamber formed by folding a panel-shaped chamber to be combined with the main chamber and have self-supporting force, the sub-chamber assisting supporting force of the main chamber by expanding with the main chamber.

A curtain airbag apparatus which can smoothly expand an airbag cushion even with a low gas ejection pressure of an inflator. A curtain airbag apparatus according to an embodiment includes: an outer cushion provided on an upper side of a pillar constituting a vehicle along a forward and backward direction of the vehicle to be expandable; a plurality of inner cushions which are fixed to an inner side of the outer cushion along the forward and backward direction of the vehicle to be spaced apart from each other and are independently expandable; and inflators disposed in the plurality of inner cushions, respectively, so as to eject gas into the inner cushions so that the inner cushions are expanded by generation of the gas.

The present invention is an airbag device installed in a vehicle seat having a seat cushion forming the seat surface and a seatback forming the backrest, a pair of inflators stowed in the left and right side portions of said seatback and generating expansion gas, and an airbag stowed in said seatback in a rolled or folded state and deployed by the expansion gas released from said inflators. The airbag is configured to include a pair of left and right side chambers that deploy from the side of the seatback toward the front and restrain movement of at least the waist to the shoulders of an occupant, and a connection part that connects the pair of side chambers and is positioned above the head of the occupant when the airbag is deployed.

An occupant protection system for a vehicle may include an expandable curtain and/or an expandable bladder configured to be expanded from a stowed state to a deployed state. The system may also include a transverse ceiling trim panel and one or more side ceiling trim panels configured to be coupled to a ceiling of the vehicle, with the transverse ceiling trim panel extending substantially transversely with respect to the one or more side ceiling trim panels. Portions of the ceiling trim panels may be configured to deflect and allow expansion of the expandable curtain and/or the expandable bladder to the deployed state. The system may also include a deployment controller and one or more inflators configured to cause deployment of the expandable curtain at a first time and deployment of the expandable bladder at a second time after the first time.

The present disclosure relates to a method performed by an occupant protection system of a vehicle for supporting protection of a vehicle occupant in the event of an ongoing or imminent collision. The occupant protection system comprises an airbag panel arrangement arranged in connection with a dashboard of the vehicle, which airbag panel arrangement comprises an inflatable airbag adapted to upon deployment protect lower body parts of a vehicle occupant seated in a vehicle seat facing the dashboard. The occupant protection system determines a distance in a predeterminable direction between the airbag panel arrangement or the dashboard and the vehicle seat or an occupant seated in the vehicle seat; determines that the distance exceeds a predeterminable maximum threshold value; determines that one or more conditions for deployment of the airbag is fulfilled; and displaces the airbag panel arrangement outwardly from the dashboard by means of a panel displacing system.

A roof airbag for vehicles and a control method to deploy the roof airbag are proposed. The roof airbag, which protects occupants by minimizing reduction of internal pressure of the airbag in an accident event in which a vehicle rolls over several times in sequence, includes: a main inflator and sub-inflator which generate gas; and a controller configured to ignite the main inflator to deploy an airbag cushion when a rollover accident of a vehicle occurs, and configured to ignite the sub-inflator to increase internal pressure of the airbag cushion when a secondary accident occurs following the primary rollover accident of the vehicle.

A vehicle seat for supporting an occupant in a sitting position includes a backrest, and an airbag unit. The airbag unit comprises an inflatable airbag provided in an initially rolled and/or folded airbag package, and an inflator actuable to direct inflating gas into the airbag to inflate the airbag into an inflated configuration. The airbag comprises a pair of inflatable chambers which are physically connected to one another via a connecting interface, and are fluidly isolated from one another. The airbag unit is mounted and configured such that, upon actuation of said inflator to inflate the airbag, the inflatable chambers inflate into respective deployed positions in which they: i) extend forwardly from respective opposing and laterally spaced-apart side regions of said backrest; and ii) extend upwardly, and laterally inwardly across an uppermost region of the seat towards said connecting interface, so as to thereby cooperate to define an inflated shroud around at least an uppermost region of the backrest so as to extend over the sitting position and provide lateral protection to a said occupant of the seat in the sitting position.

A restraint system (10) for helping to protect an occupant (60) of a vehicle (20) having a seat (50) for the occupant (60) includes a primary airbag (70) having a stored condition within a roof (32) and being inflatable to a deployed condition aligned with the seat (50). A support airbag (76) has a stored condition within the roof (32) and is inflatable to a deployed condition engaging the primary airbag (70).

A restraint system (10) for helping to protect an occupant (60) of a vehicle (20) having a roof (32) and a cabin (40) including a seat (50) for the occupant (60) has an airbag (70). The airbag (70) has a stored condition within the roof (32) and is inflatable to a deployed condition extending into the cabin (40) and aligned with the seat (50). The airbag (70) includes a first portion (94) defining a first chamber (100) and a second portion (104) defining a second chamber (110). The first portion (94) is connected to the vehicle (20) and includes a vent (106). The first portion (94), in response to occupant (60) penetration with the second portion (104), vents inflation fluid from the vent (106) and elongates to enable folding of the airbag (70) away from the occupant (60).

An occupant protection system for a vehicle may include an expandable curtain and/or an expandable bladder configured to be expanded from a stowed state to a deployed state. The system may also include a transverse ceiling trim panel and one or more side ceiling trim panels configured to be coupled to a ceiling of the vehicle, with the transverse ceiling trim panel extending substantially transversely with respect to the one or more side ceiling trim panels. Portions of the ceiling trim panels may be configured to deflect and allow expansion of the expandable curtain and/or the expandable bladder to the deployed state. The system may also include a deployment controller and one or more inflators configured to cause deployment of the expandable curtain at a first time and deployment of the expandable bladder at a second time after the first time.