A roof airbag for a vehicle. The roof airbag includes: a main cushion located at a roof panel of the vehicle and configured to be unfolded from a first side portion to a second side portion of the roof panel when being operated; a sub cushion coupled to a side surface of the extended main cushion and unfolded outside the main cushion; and an inflator located at the roof panel of the vehicle and connected to the main cushion or the sub cushion, and configured to inject gas into the main cushion and the sub cushion to unfold the main cushion and the sub cushion.

Airbag inflator system including a housing defining a flow passage leading into an interior of an airbag). A gas generator is arranged in connection with the housing. An activation system provides a signal to the gas generator to cause generation of gas. An aspirator is arranged between the reverse flow valve and the outlet end region and includes an inlet portion alongside the reverse flow valve and an aspiration portion partly separated from the inlet portion to define at least one opening in flow communication with the gas generator. The aspirator is preferably configured to generate gas flow in accordance with the Prandtl-Meyer effect.

An apparatus for helping to protect an occupant of a vehicle includes an airbag configured to inflate and deploy away from a vehicle roof toward a vehicle seat. The airbag includes a base portion configured to be connected to the vehicle roof and a cushion portion in fluid communication with the base portion. The cushion portion extends from the base portion toward the vehicle seat to an inflated and deployed condition in which the cushion portion is configured to receive and cushion an occupant seated on the vehicle seat. The apparatus also includes a deployment pocket for initially restricting the deployment of the cushion portion without restricting the base portion.

A passenger protecting device including: an airbag device including an airbag that receives a supply of gas from an inflator and is inflated and expanded, by a front expanding portion that includes a front inflating portion to be inflated and expanded at a seat front side of the head portion and at least one of a chest portion and shoulder portions of the passenger, and a pair of left and right lateral expanding portions that include lateral inflating portions that are connected to the front expanding portion and are inflated and expanded at sides of the head portion of the passenger; and a position changing device that changes an inflated and expanded position of the airbag in a seat transverse direction, in accordance with a direction of collision of a collision body with respect to the vehicle seat.

A roof airbag apparatus including a rear cushion unit deployed from a rear part toward a front part of a roof when gas is supplied, and covering a rear region of the roof; a front cushion unit coupled to a front end of the rear cushion unit to communicate therewith, deployed forward when the rear cushion unit is deployed, and covering a front region of the roof; a pair of guide bars guiding left and right ends of the rear cushion unit and the front cushion unit at left and right sides of the roof; and a pair of connection members coupled to front ends of the guide bars in a state in which the pair of connection members are fixed to the front part of the roof, and decoupled from the guide bars and deploying the front cushion unit downward when a front collision sensing signal is transferred.

A vehicle includes an occupant seating area and a body side having a first pillar and a second pillar disposed vehicle-forward of the first pillar. An airbag is mounted to the first pillar and inflatable to an inflated position. The airbag includes a side lobe extending from the first pillar toward the second pillar in the inflated position. The airbag includes a front lobe extending cross-vehicle from the side lobe vehicle-forward of the occupant seating area in the inflated position.

Airbag inflator system including a housing defining a flow passage leading into an interior of an airbag). A gas generator is arranged in connection with the housing. An activation system provides a signal to the gas generator to cause generation of gas. An aspirator is arranged between the reverse flow valve and the outlet end region and includes an inlet portion alongside the reverse flow valve and an aspiration portion partly separated from the inlet portion to define at least one opening in flow communication with the gas generator. The aspirator is preferably configured to generate gas flow in accordance with the Prandtl-Meyer effect.

There is provides a vehicle curtain airbag device including a curtain airbag, having: a front main chamber and a rear main chamber that protect occupants from a side collision, a front oblique collision chamber that is disposed at a vehicle front side, and that protects the occupant from an oblique collision, and a rollover chamber that is disposed between the front main chamber and the rear main chamber, and that protects the occupant from a rollover, wherein the curtain airbag is configured such that, during inflation and deployment of the front main chamber, the rear main chamber, the front oblique collision chamber, and the rollover chamber on receipt of gas supplied from an inflator, an internal pressure of each chamber rises in the sequence: (i) the front main chamber and the rear main chamber, (ii) the front oblique collision chamber, and (iii) the rollover chamber.

An active bolster for a vehicle is provided, wherein the bolster comprises an expansible hollow interior that is inflatable and is self-supporting in both an inflated and in an uninflated position. The bolster has an inflator module for inflating the expansible hollow interior. The bolster has an inner wall for projecting inwardly into the vehicle and away from the side of the vehicle on inflation of the expansible hollow interior. The bolster may have a relatively non-expansible component located between a first expansible chamber and a second expansible chamber. The bolster may comprise an outer wall having an attachment portion for attaching the outer wall to a portion of the side of the vehicle.

An airbag apparatus of a vehicle. In the airbag apparatus, a plurality of inflators is connected to a roof airbag, and the plurality of inflators is selectively operated according to the information of an occupant boarded in the vehicle, whereby the roof airbag expands to optimize for the occupant in the vehicle and safely protects the occupant.