The invention relates to an airbag module (12) comprising a restraint airbag (30) which is inflated in a situation of restraint and, in an inflated state, has a restraining effect on an occupant (16), and at least one backup member (36, 36a, 36b) which, in a restraining state, is at least in portions in contact with the inflated restraint airbag (30) and is configured so that it backs the restraint airbag (30) and in particular absorbs a force (F) applied to the restraint airbag (30) by contacting a vehicle occupant (16), wherein, in the inflated state, the restraint airbag (30) is interposed between the backup member (36, 36a, 36b) and the vehicle occupant (16), wherein the backup member (36, 36a, 36b) is arranged, in an initial state, on or in the airbag module. The invention also relates to a vehicle seat and a vehicle comprising an airbag module according to the invention.

A curtain airbag is folded and stored in an upper portion of a vehicle body under normal circumstances, and is inflated and expanded along a side window in emergency situations. The curtain airbag includes a front chamber to be inflated and expanded along the side window of a front seat of the vehicle body; a first gas supply port to supply gas to the front chamber, the first gas supply port being disposed at an upper portion of the front chamber; a sub-chamber smaller than the front chamber and disposed above the front chamber; and a second gas supply port disposed rearward of the sub-chamber, and communicated with and narrower than the first gas supply port. The sub-chamber is stored in a state of being folded on a front surface of the front chamber on a vehicle interior side at a portion of the second gas supply port.

A vehicle airbag device includes: an airbag; a gas generator which supplies an inflation gas to the airbag; and a wrapping material, which covers a periphery of an airbag assembly including the airbag and the gas generator. The wrapping material includes: a combining part which is formed of a sheet material and combines both edges, which are overlapped with each other in a length direction; an engagement part which is formed in parallel with the combining part in a width direction of the sheet material and is engaged in the gas generator; and a notch portion formed between the combining part of both edges and the engagement part, wherein a position of a deepest part of the notch portion in the length direction of the sheet material is less than or equal to a depth of the combining part.

A vehicle airbag device includes: an airbag; a gas generator which supplies an inflation gas to the airbag; and a wrapping material, which covers a periphery of an airbag assembly including the airbag and the gas generator. The wrapping material includes: a combining part which is formed of a sheet material and combines both edges, which are overlapped with each other in a length direction; an engagement part which is formed in parallel with the combining part in a width direction of the sheet material and is engaged in the gas generator; and a notch portion formed between the combining part of both edges and the engagement part, wherein a position of a deepest part of the notch portion in the length direction of the sheet material is less than or equal to a depth of the combining part.

A airbag cushion for installation in a negative pressure vehicle having a partition extending vertically along B-pillar trim covering a B-pillar, may include a cushion body mounted on a vehicle body in a folded state on an upper portion of the B-pillar, inflated by gas, and deployed between the B-pillar trim and the partition, and a tether connecting one side of the cushion body to the vehicle body to allow the cushion body to maintain its deployed shape.

A airbag cushion for installation in a negative pressure vehicle having a partition extending vertically along B-pillar trim covering a B-pillar, may include a cushion body mounted on a vehicle body in a folded state on an upper portion of the B-pillar, inflated by gas, and deployed between the B-pillar trim and the partition, and a tether connecting one side of the cushion body to the vehicle body to allow the cushion body to maintain its deployed shape.

A vehicle seat belt system is provided. The vehicle seat belt system includes a seat belt comprising a tubular seat belt webbing defining a passageway and a plurality of pressure control valves and a seat belt buckle for connecting to the seat belt. The seat belt buckle has an air delivery port for delivering air to the passenger, and an air delivery device supplies air to the seat belt, wherein the valves allow the supplied air to exit the seat belt at a first air pressure and block air from exiting at a second pressure.

A vehicle seat belt system is provided. The vehicle seat belt system includes a seat belt comprising a tubular seat belt webbing defining a passageway and a plurality of pressure control valves and a seat belt buckle for connecting to the seat belt. The seat belt buckle has an air delivery port for delivering air to the passenger, and an air delivery device supplies air to the seat belt, wherein the valves allow the supplied air to exit the seat belt at a first air pressure and block air from exiting at a second pressure.

The present invention provides a gas generator including: a housing having a top plate, a bottom plate located axially opposite to the top plate, and a circumferential wall located between the top plate and the bottom plate and provided with a gas discharge port; a partition wall provided with a single first communication hole, the partition wall being radially disposed in the housing to partition an interior of the housing into a first combustion chamber on the side of the top plate, which accommodates a first gas generating agent, and a second combustion chamber on the side of the bottom plate, which accommodates a second gas generating agent; a cylindrical guide member disposed between the first igniter attached to the bottom surface and the first communication hole, and provided with a second communication hole in a cylindrical wall thereof, the cylindrical guide member being disposed so as to enclose the first igniter, such that a second end opening thereof is connected to the first communication hole of the partition wall, the second end opening or the first communication hole being closed by a first closing member in a state where the second end opening or the first communication hole faces the first combustion chamber, the second communication hole closed by a second closing member in a state where the second communication hole faces the second combustion chamber, and a rupturing pressure of the first closing member being set lower than a rupturing pressure of the second closing member.

The present invention provides a gas generator including: a housing having a top plate, a bottom plate located axially opposite to the top plate, and a circumferential wall located between the top plate and the bottom plate and provided with a gas discharge port; a partition wall provided with a single first communication hole, the partition wall being radially disposed in the housing to partition an interior of the housing into a first combustion chamber on the side of the top plate, which accommodates a first gas generating agent, and a second combustion chamber on the side of the bottom plate, which accommodates a second gas generating agent; a cylindrical guide member disposed between the first igniter attached to the bottom surface and the first communication hole, and provided with a second communication hole in a cylindrical wall thereof, the cylindrical guide member being disposed so as to enclose the first igniter, such that a second end opening thereof is connected to the first communication hole of the partition wall, the second end opening or the first communication hole being closed by a first closing member in a state where the second end opening or the first communication hole faces the first combustion chamber, the second communication hole closed by a second closing member in a state where the second communication hole faces the second combustion chamber, and a rupturing pressure of the first closing member being set lower than a rupturing pressure of the second closing member.