An airbag that prevents heavy interference with the head of an occupant during expansion and deployment even when the occupant is not seated in a vehicle seat in a regular position.

An airbag device 11, including an airbag 12 and an inflator 6 for supplying gas to the airbag 12. The airbag 12 is positioned to the sides of the center in the left-right direction of the vehicle seat 2 and has a pair of chambers 1a physically coupled by a coupling section 12a that deploy forward of the occupant 3 when expansion and deployment are complete. The pair of chambers 1a are respectively independent during expansion and deployment and expand and deploy frontward from both the left and right sides of the vehicle seat 2, having side protecting chambers 1 ab that cover at least the side sections 3b of the occupant 3. The side protecting chambers 1ab are coupled by coupling sections 12a positioned to the sides of the center in the left-right direction of the vehicle seat 2, and the coupling section 12a is thinner than the side protecting chambers 1ab at least during initial expansion and deployment.

A roof airbag for a vehicle is proposed. The roof airbag for a vehicle has an airbag cushion configured to be unfolded downward from an inner roof to protect a passenger seated on a seat, and the airbag cushion has a shape bent toward the passenger by a main tether and a sub-tether, thus securing a restraining force for the passenger and safely protecting the passenger from an impact, and the airbag cushion is unfolded downward while avoiding insertion between a roof-side portion of the roof and a headlining by the sub-tether. Specifically, the airbag cushion is prevented from being transversally contracted and an unfolding shape of the airbag cushion is maintained. Furthermore, the fluidity of a gas flow in the airbag cushion is secured, so that the airbag cushion is rapidly unfolded.

A restraint system (10) for helping to protect an occupant (60) of a vehicle (20) having a roof (32) and a cabin (40) with a seat (50) for the occupant (60) includes an airbag (120) having a stored condition within the roof (32) and being inflatable to a deployed condition extending into the cabin (40) aligned with the seat (50). A tether (140) includes a first end (142) connected to the airbag (120) and a second end (144) connected to the vehicle (20). Tear stitching (170) interconnects overlying portions (152, 154) of the tether (140). The tear stitching (170) is rupturable in response to occupant (60) penetration into the deployed airbag (120) to permit the interconnected overlying portions (151, 154) to move relative to one another such that the tether (140) lengthens.

A roof airbag for a vehicle is proposed. The roof airbag for a vehicle has an airbag cushion configured to be unfolded downward from an inner roof to protect a passenger seated on a seat, and the airbag cushion has a shape bent toward the passenger by a main tether and a sub-tether, thus securing a restraining force for the passenger and safely protecting the passenger from an impact, and the airbag cushion is unfolded downward while avoiding insertion between a roof-side portion of the roof and a headlining by the sub-tether. Specifically, the airbag cushion is prevented from being transversally contracted and an unfolding shape of the airbag cushion is maintained. Furthermore, the fluidity of a gas flow in the airbag cushion is secured, so that the airbag cushion is rapidly unfolded.

An airbag device installed in a vehicle seat having a seat cushion forming the seat surface and a seatback forming the backrest, and an inflator that generates expansion gas and an airbag that is deployed by the expansion gas released from said inflator. The airbag includes a pair of left and right side chambers that deploy forward from the side of the seatback and primarily protect the occupant's waist to shoulders, and an upper chamber that is continuous with the side chambers, deploys forward above the side chambers, and mainly protects the occupant's neck and head. On the left and right sides of the seatback, the location on the side where the seatbelt crosses near the shoulder is the first side, and the side opposite to said first side is the second side. A recess is formed on the first side of the airbag where the seatbelt fits.

A knee airbag device according to the present invention includes: an airbag that restrains a lower extremity of an occupant by expanding and deploying below an instrument panel of a vehicle; and an inflator that supplies expansion gas to the airbag. The airbag includes, when the inside of the vehicle is a first side and the outside of the vehicle is a second side, a first portion positioned on the first side and a second portion positioned on the second side. Furthermore, the first portion of the airbag protrudes more toward the occupant side than the second portion.

A torso stabilization restraint configured to restrain a user in a seat, includes an inflatable first module, an inflatable second module, an inflatable third module, and connectors arranged on one or more of the modules. The connectors are configured to reversibly connect a) the first module and the second module, and b) the second module and the third module when the first, second, and third modules are inflated. When the first, second, and third modules are inflated and connected, the torso stabilization restraint and the seat combine to exert radially inward directed pressure on a torso of the user. The first and second modules are deployable from a seat. The second module is deployable from a seat belt, is arranged between the first and second modules, and is configured to couple to the first and second modules when the modules are inflated.

A roof airbag for a vehicle is proposed. The roof airbag for a vehicle has an airbag cushion configured to be unfolded downward from an inner roof to protect a passenger seated on a seat, and the airbag cushion has a shape bent toward the passenger by a main tether and a sub-tether, thus securing a restraining force for the passenger and safely protecting the passenger from an impact, and the airbag cushion is unfolded downward while avoiding insertion between a roof-side portion of the roof and a headlining by the sub-tether. Specifically, the airbag cushion is prevented from being transversally contracted and an unfolding shape of the airbag cushion is maintained. Furthermore, the fluidity of a gas flow in the airbag cushion is secured, so that the airbag cushion is rapidly unfolded.

An airbag assembly including an airbag body having a front side and an opposite rear side, a fold line provided on one of the front side and the rear side, the fold line configured to adjust a length of the one of the front side and the rear side such that a length of the rear side is greater than a length of the front side when the airbag body is in a deployed state, the fold line defining a lower boundary, and a sewn portion provided on an outer surface portion of the front side and an outer surface portion of the rear side. The sewn portion fixes an inner surface portion of the front side to an inner surface portion of the rear side at a location within a predetermined distance from the lower boundary.

A restraint system for helping to protect an occupant (60) of a vehicle (20) includes a first inflator (74) for providing inflation fluid at a first fluid pressure and a second inflator (76) for providing inflation fluid at a second fluid pressure greater than the first fluid pressure. An airbag (70) includes a stored condition within a roof (32) and is inflatable to a deployed condition extending into a cabin (40) and aligned with a seat (50) for the occupant (60). The airbag (70) includes a first portion (98) defining a first chamber (100) fluidly connected to the first inflator (74) and a second portion (102) defining a second chamber (104) fluidly connected to the second inflator (76) and fluidly isolated from the first chamber (100). The first portion (98) moves relative to the second portion (102) in response to occupant (60) penetration into the airbag (70).