A steering wheel airbag, arranged to cover a steering wheel when inflation is completed, includes: a front-collision receiving surface which is arranged on a side of a driver when inflation is completed, so as to receive the driver moving forward during a head-on collision of a vehicle, the front-collision receiving surface being arranged substantially along a vertical direction to be tilted with respect to a ring surface of the steering wheel when inflation is completed; and arm restraining parts which are arranged near arms of the driver steering a ring part of the steering wheel on both right and left sides of the front-collision receiving surface when inflation is completed, the arm restraining parts coming into contact with the arms during an oblique collision or an offset collision of the vehicle, so as to prevent a movement of the driver to an obliquely front side.

An airbag which is a constituent of a side airbag device installed in the vehicle seat according to the present invention is provided with a main chamber which deploys toward the front of a side support portion of the seat, and a sub-chamber which accommodates an inflator and which deploys at a position inward of the main chamber in the width direction of the vehicle. The main chamber is divided, by means of a baffle panel, into a main front chamber at the front, and a main rear chamber at the rear. The sub-chamber is linked to the main rear chamber at a side in the width direction of the vehicle. When the airbag is deployed, the baffle panel extends along a front edge of the sub-chamber, as viewed from the width direction of the vehicle.

An airbag includes an airbag body having a first expansion portion, a second expansion portion, a first non-expanding part, and a second non-expanding part. While the airbag body is in a deployed state, the first expansion portion is disposed on a side of an occupant; the second expansion portion is disposed at a front side of the first expansion portion and is enlarged downward with respect to the first expansion portion; the first non-expanding part includes a first extending part extending downward from an upper part of the second expansion portion and a second extending part extending upward from a lower part of the second expansion portion, and has an opening between a tip of the first extending part and a tip of the second extending part; and the second non-expanding part is disposed rearwardly apart from the opening and extends at least partially along the first non-expanding part.

An airbag system includes an airbag and an inflator positioned in an instrument panel. The airbag includes a first chamber and a second chamber spaced from the instrument panel by the first chamber. A plurality of tethers is positioned within the second chamber. Each tether is coupled between a central area of a lower side and a central area of an upper side. A first and second lower extensions and a first and second upper extensions extend from the lower side and the upper side of the airbag, respectively.

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.

A vehicular airbag device capable of improving reduction of an occupant obstruction value during a diagonal collision. A vehicular airbag device opens an airbag door on an instrument panel. The outer shape of the airbag when fully deployed and expanded is line-symmetrical with respect to a center line of the opening in a vehicle left-right width direction, and a width dimension in the vehicle width direction at a position of a rear edge of the instrument panel in the vehicle longitudinal direction is greater than a width dimension in the vehicle width direction at a position of a center of the opening in the vehicle longitudinal direction which is more forward in the vehicle longitudinal direction than the rear edge position of the instrument panel.

[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] The airbag employed in the present invention includes: a first chamber (C1) which houses the inflator and is deployed outside in the vehicle width direction of the frame side wall part; a second chamber (C2) which is deployed inside in the vehicle width direction of the frame side wall part; and a gas guide (100) arranged so as to surround the inflator inside the first chamber. In addition, the first chamber (C1) is deployed such that at least a portion thereof, as seen from the vehicle side, overlaps the frame side wall part. A first inner vent is formed at the boundary part between the gas guide and the first chamber, with gas introduced from the gas guide to the first chamber via this first inner vent. Moreover, a second inner vent is formed at the boundary part between the gas guide and the second chamber, with gas introduced from the gas guide to the second chamber via this second inner vent.

[Problem] To provide: a side airbag device capable of quickly and properly restraining a passenger in the initial stage of deploying an airbag; and a vehicle seat provided with the side airbag device. [Resolution Means] A side airbag device is provided with: an airbag disposed inside a side supporting part of a seat, that restrains an occupant by expanding and deploying in the event of a vehicle collision; and an inflator that supplies an expansion gas to the airbag. Furthermore, the airbag is folded and stored in the side supporting part in an extended condition such that the vertical direction is the longitudinal direction. Furthermore, a lower part of the airbag in the stored condition is folded a plurality of times in the longitudinal direction to form a lower compressed part.

An airbag includes: a bag main body: and regulating units configured to regulate an expansion completed shape of the bag main body. The bag main body has an expansion completed shape as a substantially square cylindrical shape, where a hollow portion which penetrates substantially along a left-right direction is provided and a circumference of the hollow portion is surrounded by an upper expansion portion and a lower expansion portion and a front expansion portion and a rear expansion portion. The regulating units are arranged at a plurality of horizontally symmetrical locations centered on a center of the bag main body on the left-right directional side and each of the regulating units is configured to straddle the hollow portion when viewed from a lateral side in the left-right direction and at least an upper edge side and a lower edge side are connected to the bag main body side.

A restraint system (10) for helping to protect an occupant (60) of a vehicle (20) having a roof (32) and a cabin (40) including a seat (50) for the occupant (60) has an airbag (70). The airbag (70) has a stored condition within the roof (32) and is inflatable to a deployed condition extending into the cabin (40) and aligned with the seat (50). The airbag (70) includes a first portion (94) defining a first chamber (100) and a second portion (104) defining a second chamber (110). The first portion (94) is connected to the vehicle (20) and includes a vent (106). The first portion (94), in response to occupant (60) penetration with the second portion (104), vents inflation fluid from the vent (106) and elongates to enable folding of the airbag (70) away from the occupant (60).