[Problem] To provide a side airbag apparatus capable of quickly and properly restraining a passenger in the initial stage of deploying an airbag, along with a passenger protection apparatus including this side airbag apparatus. [Resolution means] A side airbag apparatus employed in a passenger protection apparatus according to the present invention includes: an airbag for restraining a passenger when expanded and deployed; and an inflator for supplying expansion gas to the airbag. The airbag includes: a first chamber which houses the inflator and is deployed outside in the vehicle width direction of the frame side wall part; a second chamber which is deployed inside in the vehicle width direction of the frame side wall part with respect to this first chamber; and an internal expanding part which is arranged in the second chamber and expands at least on the rear side of the vehicle in the second chamber via the gas flowing out from the first chamber. In addition, the first chamber is deployed such that at least a portion thereof, as seen from the vehicle side, overlaps the frame side wall part, while the second chamber is configured to be expandable via the gas flowing out from the internal expanding part.

A vehicle occupant restraining device, comprising: a pair of air bags; an inner bag housed in at least one of the pair of air bags, is in communication with the at least one of the air bags, and is inflated and deployed inside the at least one of the air bags, on the sides of the body of a vehicle occu-pant; and a pair of pieces of tension cloth housed so as to extend along the respective sides of a housed pair of air bags, which are located on the opposite sides of the vehicle occupant, and then through the inside of the seat back of a seat into a seat cushion, wherein the inner bag completes inflation and deployment before the at least one of the air bags does, and the pair of pieces of tension cloth is deployed on the sides of the seat.

A side airbag apparatus includes an airbag that is configured to be deployed and inflated between a body side portion of a vehicle and an occupant seated in a seat in a passenger compartment by a pressure of gas supplied from an inflator. The airbag includes an outer bag and an inner bag, which is provided in the outer bag and accommodates the inflator. The inner bag includes an upper-side inflation portion, which projects forward when inflated to correspond to the shoulder of the occupant, a lower-side inflation portion, which projects forward when inflated to correspond to the lumbar region of the occupant, and a recessed portion, which is provided between the upper-side inflation portion and the lower-side inflation portion. The inner bag includes a connecting hole that connects the inside and the outside of the inner bag to each other.

An airbag support device for a vehicle swivel seat includes: a support frame disposed on a lateral side of a seat back frame; a side airbag disposed on a rear plate of the support frame; a plurality of support bars disposed in an extendable manner on a lateral plate of the support frame; an extension drive bar configured to extend such that the extension drive bar connects the plurality of support bars to each other while extending; and a support bar extension drive assembly, connected to the rear plate of the support frame and the extension drive bar, wherein the support bar extension drive assembly is configured to push the extension drive bar inward and outward and at the same time to extend the support bar when the side airbag is inflated.

An assembly for a vehicle includes an airbag inflator. The assembly includes a curtain airbag including a main lobe and an inflatable flap. The main lobe and the inflatable flap are each inflatable by the airbag inflator to an inflated position. The main lobe includes an inboard panel and an outboard panel. The inflatable flap is at the inboard panel in the inflated position. The inflatable flap, in the inflated position, is at the inboard panel and abutting the inflator.

An airbag support device for a vehicle swivel seat includes: a support frame disposed on a lateral side of a seat back frame; a side airbag disposed on a rear plate of the support frame; a plurality of support bars disposed in an extendable manner on a lateral plate of the support frame; an extension drive bar configured to extend such that the extension drive bar connects the plurality of support bars to each other while extending; and a support bar extension drive assembly, connected to the rear plate of the support frame and the extension drive bar, wherein the support bar extension drive assembly is configured to push the extension drive bar inward and outward and at the same time to extend the support bar when the side airbag is inflated.

An airbag for a vehicle includes a main chamber that deploys and inflates toward a passenger and has an empty space formed therein. A delay chamber is disposed in the empty space of the main chamber and is connected with the main chamber through a connecting portion. The delay chamber inflates in the empty space of the main chamber by receiving gas from the main chamber through the connecting portion when the main chamber is deployed.

It is provided a gas bag for a vehicle occupant restraint system of a motor vehicle, comprising at least one first inflatable chamber configured for the protection of the head of a vehicle occupant; at least one second inflatable chamber configured for the protection of a shoulder and/or thorax region of the vehicle occupant, wherein the gas bag is to be arranged in or on a side of a vehicle seat facing the vehicle interior space. The first and the second chamber are rotatable relative to each other in the inflated condition of the gas bag.

[Problem] To provide a side airbag apparatus capable of quickly and properly restraining a passenger in the initial stage of deploying an airbag, along with a passenger protection apparatus including this side airbag apparatus.

[Resolution means] A side airbag apparatus employed in a passenger protection apparatus according to the present invention includes: an airbag for restraining a passenger when expanded and deployed; and an inflator for supplying expansion gas to the airbag. The airbag includes: a first chamber which houses the inflator and is deployed outside in the vehicle width direction of the frame side wall part; a second chamber which is deployed inside in the vehicle width direction of the frame side wall part with respect to this first chamber; and an internal expanding part which is arranged in the second chamber and expands at least on the rear side of the vehicle in the second chamber via the gas flowing out from the first chamber, In addition, the first chamber is deployed such that at least a portion thereof, as seen from the vehicle side, overlaps the frame side wall part, while the second chamber is configured to be expandable via the gas flowing out from the internal expanding part.

The disclosure relates to a side airbag device including: an inflator that discharges gas; a cushion that covers the inflator and is expanded toward a side of a passenger by the gas discharged from the inflator; and a tether that is disposed through and around the cushion and induces an upper portion of the cushion to bend when the cushion expands, thereby being able to prevent a passenger-to-passenger collision and protect even one passenger.