A side airbag apparatus includes an inflator, an airbag body that is configured to be deployed and inflated by inflation gas supplied from the inflator, and an inflated-dimension limiter arranged inside the airbag body. The inflated-dimension limiter is joined to the airbag body by a front joint portion provided at the front end of the inflated-dimension limiter. The inflated-dimension limiter is also joined, by a rear joint portion provided at the rear end of the inflated-dimension limiter, to a portion of the airbag body that is behind a section of the airbag body to which the inflated-dimension limiter is joined by the front joint portion. The dimension between the uppermost end and the lowermost end of the front joint portion is set to be different from the dimension between the uppermost end and the lowermost end of the rear joint portion.

A base material for a seatback side includes a body portion including a protruding portion. The protruding portion has a plate piece surface of a distal end extending from the body portion outwardly relative to an outer portion provided on an outer side in a vehicle width direction. The plate piece surface is placed side by side with a flange surface of a flange portion projecting in a peripheral portion of the body. The distal end is sandwiched by a weather strip together with the flange portion.

A rear seat side airbag device comprising: a case that is disposed at a vehicle width direction outer-side of a seatback of a rear seat and configured including, in vehicle plan view, a bottom wall extending along a vehicle width direction and a pair of side walls extending toward a vehicle front from respective vehicle width direction end portions of the bottom wall, one of the side walls being formed with a shorter vehicle front-rear direction length than the other of the side walls; and an airbag module that is housed in the case and configured including a side airbag and an inflator, the inflator supplying gas to the side airbag and including a stud bolt projecting out in a vehicle width direction and fastened to the one side wall or the other side wall by the stud bolt.

A side airbag device includes: an inflator configured to inject gas into an airbag; a case including a mount wall for the inflator to be mounted thereto; an inflator anchoring member provided on a side of the mount wall opposite to an inflator side and attached to the inflator by a mounting member with the mount wall held between the inflator anchoring member and the inflator; an outer covering material configured to cover the case; a restriction member fixed at a position around a seam of the outer covering material and configured to restrict a direction of deployment of the airbag; and an engaging portion provided at an end portion of the restriction member and configured to engage with the case, the engaging portion being located in place at the case, to thereby be restricted in movement.

A side airbag device capable of preventing interference between a harness and an airbag is provided between a vehicle body and a seat. The side airbag device includes an airbag module an inflatable airbag and an inflator supplying a gas into the airbag, a base member including an airbag storage portion having a concave shape and storing the airbag module and is attached between a vehicle body door and the seat, and a retainer member holding the airbag storage portion from the rear side of the vehicle body. The base member includes a first through hole through which a harness of the inflator is inserted and a flange which is formed in the periphery of the first through hole. The retainer member includes a second through hole through which the harness of the inflator is inserted and which is provided at a position facing the first through hole.

A side airbag apparatus is provided between a vehicle body and a back seat, and includes a base housing configured to house an airbag and an inflator, a base member having upper and lower base attachment portions provided to sandwich the base housing in an upper-to-lower direction and attached to a portion of the vehicle body, and a retainer member configured to hold the base housing from a vehicle back side. Right and left engagement claws at an upper end of a back wall of the retainer member are arranged to engage respectively with engagement holes provided at a portion of the vehicle body on the vehicle back side. A virtual plane passing through the upper and lower base attachment portions and extending along a vehicle front-to-back direction passes between the right and left engagement claws.

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.

A side air bag device is described which is disposed in a space between a vehicle body and a back seat and for which rigidity of attachment to a vehicle body member is improved. The side air bag device provided between a vehicle body and a back seat includes: a base member including a base storage configured to store an air bag and an inflator and a base attachment portion attached to the vehicle body; and a retainer member configured to hold the base storage from a vehicle back side. The retainer member extends from a portion holding the base storage while being bent along the shape of the vehicle body. The retainer member is attached to the vehicle body together with the base attachment portion while being overlapped with the base attachment portion.

A side air bag device is described which is disposed in a space between a vehicle body and a back seat and for which rigidity of attachment to a vehicle body member is improved. The side air bag device provided between a vehicle body and a back seat includes: a base member including a base storage configured to store an air bag and an inflator and a base attachment portion attached to the vehicle body; and a retainer member configured to hold the base storage from a vehicle back side. The retainer member extends from a portion holding the base storage while being bent along the shape of the vehicle body. The retainer member is attached to the vehicle body together with the base attachment portion while being overlapped with the base attachment portion.

An airbag device has an airbag. The airbag has a front-rear chamber and an airbag main body. The front-rear chamber has a left and right pair of front-rear extending portions that pass by respective left and right sides of a head of a passenger seated in a vehicle seat and inflate and deploy toward the seat front side, and a connecting portion connecting front end portions of the pair of front-rear extending portions in a seat left-right direction. The airbag main body inflates and deploys toward a side of the passenger at a seat rear side of the connecting portion, later than the front-rear chamber. At a time when the passenger is restrained, the airbag main body is compressed in a seat front-rear direction while stretching the front-rear chamber in the seat front-rear direction.