The airbag device protects the occupant seated in the vehicle seat disposed in the vehicle. An airbag device includes a first airbag group and a second airbag group that are disposed in the vehicle seat in correspondence with impacts from two different directions and that respectively include a plurality of airbags; a gas generation unit that is disposed in a seat cushion, of the vehicle seat, that supports the buttocks region of the occupant and that generates gas to be supplied to the first airbag group or the second airbag group; and a switching unit that switches the supply of gas to either the first airbag group or the second airbag group.

A coupling structure includes a first coupling portion formed by one end portion of a first tube, and a second coupling portion formed by one end portion of a second tube, and is configured such that the first coupling portion is inserted in the second coupling portion, the first coupling portion and the second coupling portion are coupled, with the second tube being pivotable with respect to the first tube, and a gap is formed between an outer surface of the first coupling portion and an inner surface of the second coupling portion in a first state in which a fluid is not flowing through the flow path, and in a second state in which the fluid is flowing through the flow path, pressure of the fluid causes the first coupling portion to deform to expand toward an outer side of the flow path to reduce the gap.

In an assembly group comprising a cap of a tubular gas generator and a deflector element that deflects gas flowing out of at least one outflow opening of the cap to at least one discharge opening of the deflector element, a deflection surface of the deflector element is arranged radially outwardly of the outflow opening. At least two securing arms of the deflector element extend through the outflow opening and engage behind an edge defining the outflow opening on an inside in a positive connection with the cap. The cap is fixed firmly to an axial end of the tubular gas generator. Subsequently, the deflector element is slid from an outside of the cap with its securing arms through the outflow opening, the securing arms forming a positive connection with the edge of the outflow opening which fixes the deflector element firmly to the cap.

The invention describes an airbag module (10) comprising an airbag (12), an elongate gas generator (14) and a diffusor (16), wherein the gas generator (14) includes an outer housing (18) with outflow openings (20) distributed over the circumference (U) which define an outflow area (22), wherein the outflow area (22) of the gas generator (14) is enclosed by the diffusor (16), wherein the diffusor (16) has a central mount hole (24) into which the outer housing (18) protrudes so that the diffusor (16) circumferentially encloses an axial portion of the outer housing (18) which comprises the outflow area (22), wherein the diffusor (16) includes at least one contact face (26, 26a) and at least two gas guiding surfaces (28a, 28b) on the inner face of the diffusor (16) delimiting the mount hole (24), wherein the contact face (26, 26a) is directly adjacent to the outer housing (18) of the gas generator (14) and the gas guiding surfaces (28a, 28b) are radially spaced apart from the outer housing (18) while forming at least a first collection chamber (30a) and a second collection chamber (30b) into which gas flowing out of the outflow area (22) flows, wherein the first collection chamber (30a) opens into at least one first outlet opening (32a) and the second collection chamber (30b) opens into at least one second outlet opening (32b), wherein the first collection chamber (30a) is separated from the second collection chamber (30b) by the at least one contact face (26) specifically in the form of a separating web (34), wherein the diffusor (16) is completely arranged in an inflatable internal volume of the airbag (12), wherein the airbag (12) comprises at least a first airbag chamber (36a) and a second airbag chamber (36b) which are separated from each other, wherein the gas flowing into the first collection chamber (30a) flows, via the first outlet opening (32a), into the first airbag chamber (36a) of the airbag (12) and the gas flowing into the second collection chamber (30b) flows, via the second outlet opening (32b), into the second airbag chamber (36b) of the airbag (12).

An adaptor for connecting a fill tube to an inflator includes a sleeve configured to fit over a discharge end portion of the inflator and to be connected to the inflator. The adaptor also includes an end portion comprising a nipple configured to receive and connect with the fill tube, wherein the sleeve is configured to direct inflation fluid discharged from the inflator toward the nipple, and the nipple is configured to direct the inflation fluid into the fill tube.

Aspects of the disclosure provide for airbag systems suited for autonomous vehicles. Such an airbag system may include a first chamber, a second chamber, a dual-stage inflator, an orifice blocker mechanism and a control module. The dual-stage inflator may be in fluid communication with the first chamber via a first orifice and in fluid communication with the second chamber via a second orifice. The orifice blocker mechanism may be configured to block and unblock gas flow from the second orifice to the second chamber. The control module may be configured to activate the dual-stage inflator in order to inflate one or both of the first chamber and the second chamber with gas based on a position of the orifice blocker mechanism relative to the second orifice.

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.

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 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 includes a manifold having an outer panel and an inflation chamber defined at least in party by the outer panel. The airbag further includes a first compartment and a second compartment spaced from the first compartment connected to the outer panel and positioned external to the inflation chamber. A first one-way valve is in fluid communication with the manifold and the first compartment, and a second one-way valve is in fluid communication with the manifold and the second compartment.