In a vehicle seat having an airbag module placed in the seatback thereof, the load that may be applied to the back side of the seatback is prevented from being applied to the airbag module. The vehicle seat (1, 300, 400) comprise a seatback frame (19) including a pair of side members (26, 301) extending vertically along either side thereof and providing a structural framework of a seatback, a plate member (20, 402) positioned behind the seatback frame and including an extension (32, 410) extending in an outboard direction from the side member located on an outboard side of the seatback frame, a mounting member connected to the outboard side member, and an airbag module (23) positioned on a front side of the extension and connected to the outboard side member via the mounting member, a clearance (S) being defined between the airbag module and the extension.

[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.

In a vehicle seat, a back pad outer skin covering a surface of a back pad includes a first portion covering a surface of one part, including a side face, of a bolster pad part, and second portions covering a surface of another part that is different from the one part of the bolster pad part. A bound part is formed by binding to each other mutually adjacent end parts of the first portion and the second portions and extremity parts of expansive force transmission webbings having base portions fixed to a frame, the bound part being capable of breaking when an airbag is made to expand. A non-stretchable cloth member is disposed on a reverse side of specific outer skin portions, covering a front face of the bolster pad part, of the second portions.

A seat assembly includes a seatback having an interior portion and a seat portion having an interior portion. A belt member includes first and second ends and a deployable portion disposed therebetween. The deployable portion is operable between a stowed position and a deployed position. The deployable portion of the belt member is disposed within the interior portion of the seatback and the interior portion of the seat portion when the deployable portion is in the stowed position. The deployable portion of the belt member is disposed outside of the interior portion of the seatback and outside of the interior portion of the seat portion when the deployable portion is in the deployed position. One or more retractor mechanisms are operably coupled to the belt member and operative to retract a portion of the deployable portion of the belt member after or during deployment.

In a vehicle seat having an airbag module placed in the seatback thereof, the load that may be applied to the back side of the seatback is prevented from being applied to the airbag module. The vehicle seat includes a seatback frame including a pair of side members extending vertically along either side thereof and providing a structural framework of a seatback, a plate member positioned behind the seatback frame and including an extension in an outboard direction from the side member located on an outboard side of the seatback frame, a mounting member connected to the outboard side member, and an airbag module positioned on a front side of the extension and connected to the outboard side member via the mounting member, a clearance being defined between the airbag module and the extension.

Provided is a vehicle seat having a seat cushion, a submarine bar, an airbag main body, a bag retainer, and a transmission member. The seat cushion is shifted by a tilting mechanism or a lifting mechanism. The submarine bar is suspended across side frames. The airbag main body inflates and deploys inside the seat cushion. The bag retainer is at least partially disposed inside the airbag main body and retains an inflator. The transmission member transmits, to the submarine bar, a load that acts on the bag retainer when the airbag main body inflates and deploys in a state where the seat cushion has been shifted upward.

A vehicle seat includes an airbag device, an attachment bracket with which the airbag device is fixed to the side frame member of a seat back, a cushion pad covering a front side and a lateral side of the back frame, and a side panel attached to the side frame member. The attachment bracket includes an airbag fixing portion that protrudes laterally from the side frame member. The airbag device is disposed on a front side of the airbag fixing portion and is fixed to the airbag fixing portion with bolts that penetrate the airbag fixing portion from the front side of the airbag fixing portion to a rear side of the airbag fixing portion. The side panel covers a lateral side and the rear side of the airbag fixing portion and constructs an external shape of the side surface of the seatback together with the cushion pad.

To reduce an amount of rear protrusion of a vehicle seat equipped with an airbag module configured to deploy rearward, in a vehicle seat (1) provided with a seat cushion (3) and a seat back (4), the seat back includes: a seat back frame (7) including a pair of left and right side frames (11) extending in a vertical direction and an upper frame (12) connecting upper ends of the side frames to each other; an airbag module (43) supported by an upper half of the seat back frame via a bracket (31); and a skin member (9) covering the seat back frame, the bracket, and the airbag module from a rear side thereof, wherein a part of the skin member corresponding to the airbag module is provided with a frangible portion (80) configured to open upon inflation of an airbag (45).

[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 apparatus capable of quickly and properly restraining a passenger in the initial stage of deploying an airbag, along with a vehicle seat including this side airbag apparatus.

[Resolution means] The airbag includes: a first chamber which is deployed towards the front of the side support part of the seat; a second chamber which starts being deployed inside the first chamber in the vehicle width direction prior to this first chamber; and a gas guide which is arranged in the first chamber so as to introduce the expansion gas (emitted from the inflator) into the second chamber. An internal vent hole, through which the expansion gas introduced by the gas guide flows into the second chamber, is formed at the boundary part between the first chamber and the second chamber. The second chamber includes: an upper region and a lower region; and an intermediate region disposed between the upper region and the lower region. In addition, at least one of the upper region or the lower region is configured to be deployed so as to protrude more to the front of the vehicle than the intermediate region.