Airbag device

An airbag device, the airbag device comprising:

• an airbag configured to expand and deploy for integrally covering the head and side sections of an occupant seated on a vehicle seat, and
• an inflator that supplies gas to the airbag, wherein
• the airbag has a pair of chambers coupled by a coupling section positioned to the sides of the center of the vehicle seat in the left-right direction that deploy forward of the occupant when expansion and deployment are complete,
• the pair of chambers independently expand and deploy frontward from both the left and right sides of the vehicle seat during expansion and deployment, there being a pair of side protecting chambers adapted to cover at least the side sections of the occupant,
• the side protecting chambers are coupled by the coupling section, and
• the coupling section is configured so as to be thinner than the side protecting chambers at least during initial expansion and deployment,
• wherein the coupling section has a delay chamber section where complete expansion and deployment by gas supplied through inner vents connected to the side protecting chambers is more temporally delayed than for the side protecting chambers, and
• wherein the delay chamber section includes a left-right pair of expanding sections, and gas from the inner vents, provided to the sides of the center in the left-right direction of the vehicle seat in the side protecting chambers, is supplied to the expansion sections.

An airbag device, the airbag device comprising:

• an airbag configured to expand and deploy for integrally covering the head and side sections of an occupant seated on a vehicle seat, and
• an inflator that supplies gas to the airbag, wherein
• the airbag has a pair of chambers coupled by a coupling section positioned to the sides of the center of the vehicle seat in the left-right direction that deploy forward of the occupant when expansion and deployment are complete,
• the pair of chambers independently expand and deploy frontward from both the left and right sides of the vehicle seat during expansion and deployment, there being a pair of side protecting chambers adapted to cover at least the side sections of the occupant,
• the side protecting chambers are coupled by the coupling section, and
• the coupling section is configured so as to be thinner than the side protecting chambers at least during initial expansion and deployment,
• wherein the coupling section has a delay chamber section where complete expansion and deployment by gas supplied through inner vents connected to the side protecting chambers is more temporally delayed than for the side protecting chambers, and wherein the airbag is composed of at least two base fabrics, independent seams that do not join with an outer peripheral seam are formed at a boundary of the respective side protecting chambers and the delay chamber section, and gaps between these independent seams and the outer peripheral seam form inner vents.