A vehicle occupant protection device includes an airbag constructed as an integrated bag body that is deployable in an area including a front side of a head portion of a vehicle occupant, and in an area including both left and right sides of the head portion of the vehicle occupant, and an airbag case. The airbag case includes a box-shaped case main body provided on a seat rear side of a headrest main body, in which the airbag is housed in a folded state, and that inflates and deploys the airbag from an upper portion of the case main body during an inflation and deployment of the airbag, and a reaction force plate that is provided in a lower portion side of the case main body and inside the case main body, and that supports the airbag from the seat rear side during the inflation and deployment of the airbag.

An occupant protection device includes a multidirectional airbag that inflates and deploys from a state housed in a headrest on receipt of supplied gas. The multidirectional airbag is configured as an integral bag body to surround a head of a seated occupant with a front deployment section and a pair of left and right lateral deployment sections. The front deployment section includes a front inflating portion that deploys to a seat forward direction of the head of the seated occupant and of at least one of a shoulder or chest of the seated occupant. Each of the pair of left and right lateral deployment sections includes a lateral inflating portion that is connected to the front deployment section and inflates and deploys alongside the head of the seated occupant.

An active bolster for a vehicle is provided, wherein the bolster comprises an expansible hollow interior that is inflatable and is self-supporting in both an inflated and in an uninflated position. The bolster has an inflator module for inflating the expansible hollow interior. The bolster has an inner wall for projecting inwardly into the vehicle and away from the side of the vehicle on inflation of the expansible hollow interior. The bolster may have a relatively non-expansible component located between a first expansible chamber and a second expansible chamber. The bolster may comprise an outer wall having an attachment portion for attaching the outer wall to a portion of the side of the vehicle.

An airbag that prevents heavy interference with the head of an occupant during expansion and deployment even when the occupant is not seated in a vehicle seat in a regular position is configured to be positioned to the sides of the center in the left-right direction of a vehicle seat and has a pair of chambers physically coupled by a coupling section that deploy forward of the occupant when expansion and deployment are complete. The pair of chambers are independent during expansion and deployment and expand and deploy frontward from both the left and right sides of the vehicle seat, having side protecting chambers that cover at least the side sections of the occupant. The side protecting chambers are coupled by coupling sections positioned to the sides of the center in the left-right direction of the vehicle seat, and the coupling section is thinner than the side protecting chambers at least during initial expansion and deployment.

A vehicle occupant protecting device, includes: an multidirectional airbag that is accommodated in a headrest, and that receives a gas supply from an inflator and inflates and expands, and that protects a head portion of a vehicle occupant from at least a front side and left and right both sides, and at which a front expanding portion, which protects the head portion from a front side, passes above the head portion in a process of inflating and expanding; and a vehicle cabin ceiling at which a reinforcing portion as an expanding direction regulating means is provided at an interference region which the front expanding portion interferes with in the process of inflating and expanding, and that, by the interference, directs an expanding direction of the front expanding portion toward a front side of the head portion.

Airbag assemblies including a housing assembly to be mounted above a vehicle occupant position, an inflator, and an inflatable cushion are provided. The inflatable cushion can include first and second lateral chambers and a frontal chamber disposed between the first and second lateral chambers. Airbag assemblies including a first inflatable cushion that is configured to deploy at a first lateral side and forward of a vehicle occupant position and a second inflatable cushion that is configured to deploy at a second lateral side and forward of the vehicle occupant position are also provided.

An in-seat airbag device, includes: an airbag main body having a front-rear chamber that, due to gas jetted from an inflator, expands past a side of a head of a passenger toward a seat front side and is disposed at the side of the head of the passenger, and a distal end chamber that expands from a seat front side end portion of the front-rear chamber toward a seat width direction inner side and is disposed at a seat front side of a face of the passenger, wherein the airbag main body is accommodated in a state of having an outwardly-wound portion that is wound outwardly in a form of a roll whose axial direction is a seat vertical direction, after a distal end portion of the distal end chamber is folded-over toward a side opposite a passenger side.

An airbag assembly includes: an air bag, mounted to a vehicle seat and capable of inflating from an undeployed state to a deployed state, wherein in the deployed state, the air bag extends along the head and torso of an occupant in the vehicle seat, arranged to surround the head and torso of the occupant; and a strap, for mounting the air bag to the vehicle seat and having a first section and a second section, wherein in the deployed state, the strap is tightened, the first section being mounted to the air bag on an outer surface of the air bag in an extension direction of the air bag, and the second section extending on at least one outer side surface of the air bag in a direction at an angle with respect to the extension direction of the air bag.

A vehicle seat assembly includes a seatback including a left lateral panel and a right lateral panel opposite the left lateral panel, a left airbag inflatable from the left lateral panel to an inflated position, a right airbag inflatable from the right lateral panel to an inflated position, and a tether extending from the left lateral panel to the right lateral panel. The tether is connected to the airbags.

An occupant protection system including: a first airbag; and a second airbag, wherein the second airbag has a pair of lateral inflating portions which cover the entire head of the occupant from both sides in the vehicle width direction and an upper deploying portion which covers the head of the occupant from the upper side in the vehicle vertical direction, the pair of lateral inflating portions and the upper deploying portion are each supported in back in the vehicle forward and rearward direction by the vehicle seat, and in the inflated and deployed state of the second airbag, vehicle vertical direction upper edge portions of the pair of lateral inflating portions and vehicle width direction side edge portions of the upper deploying portion are connected to each other from their rear end side to their front end side in the vehicle forward and rearward direction.