A passenger seat airbag apparatus for a vehicle, including a housing installed in a structure inside the vehicle, an airbag cushion accommodated in a folded state inside the housing, and inflated and deployed between the structure inside the vehicle and an occupant to restrain and protect the occupant when the vehicle collides, and a flap having one end connected to a wrapper for wrapping the folded airbag cushion to guide a deployed direction of the airbag cushion while the airbag cushion is inflated and deployed. The flap is formed on both sides thereof with expansion parts for expanding a width of the flap wider than a width of an inner space of the housing. This invention further includes a structure inside the vehicle when the airbag cushion is inflated and deployed, which stably guides a deployed direction of the flap and the airbag cushion, enhancing deployment shape and performance.

A seat-mounted airbag device includes an inflator, an airbag body, and a guide member. The airbag body includes a front-rear chamber and a tip chamber. The front-rear chamber is deployed forward of a seat through a clearance between a window and a head of an occupant from a side portion of a headrest on a window side by gas ejected from the inflator and disposed between the window and the head of the occupant. The tip chamber is deployed inward in a seat width direction from an end portion of the front-rear chamber on a seat front side and disposed forward of a face of the occupant on the seat front side. The guide member protrudes from the side portion prior to deployment of the airbag body and is interposed between the airbag body and the head of the occupant.

A seat-mounted airbag device includes an inflator that is operated when a vehicle collision is detected or predicted and ejects gas and an airbag body that includes a front-rear chamber and a tip chamber. The front-rear chamber is deployed forward of a seat through a clearance between a window and a head of an occupant from a side portion of a headrest on a window side by the gas ejected from the inflator and disposed between the window and the head of the occupant. The tip chamber is deployed inward in a seat width direction from an end portion of the front-rear chamber on a seat front side and disposed forward of a face of the occupant on the seat front side. The airbag body housed in the side portion includes Fan outward wound portion wound outward in a roll shape with a seat up-down direction as an axial direction.

An occupant protection system for protecting a vehicle occupant sitting in a seat includes a seatbelt that includes a lap belt for arresting the pelvis of the occupant, and an airbag disposed in the lap belt. The airbag is coupled to the lap belt in such a manner as to be movable relative to the lap belt in a left and right direction, and includes a main inflatable portion that is deployable in front of upper body of the occupant, and a positioning inflatable portion that protrudes from a lower end region of the main inflatable portion. The positioning inflatable portion includes a contact surface that contacts and is supported by an environmental member which is disposed in a circumference of the lap belt at airbag deployment, whereby helps align a center in the left and right direction of the main inflatable portion generally with that of the upper body.

The present invention is an airbag device installed in a vehicle seat having a seat cushion forming the seat surface and a seatback forming the backrest, a pair of inflators stowed in the left and right side portions of said seatback and generating expansion gas, and an airbag stowed in said seatback in a rolled or folded state and deployed by the expansion gas released from said inflators. The airbag is configured to include a pair of left and right side chambers that deploy from the side of the seatback toward the front and restrain movement of at least the waist to the shoulders of an occupant, and a connection part that connects the pair of side chambers and is positioned above the head of the occupant when the airbag is deployed.

[Problem] To provide an airbag apparatus in which the injury value of a passenger can be efficiently suppressed in an emergency. [Resolution Means] A typical configuration of an airbag apparatus 100 according to the present invention includes: an inflator 118 which is installed in a vehicle so as to be capable of supplying gas; an inner bag 112 which is expanded from in front of a seat utilizing the gas; and an outer bag 110 to which the gas is supplied from the inflator 118 or via the inner bag 112 and expanded so as to surround the inner bag 112. The outer bag 110 includes an opening 116 which exposes the inner bag 112 towards the seat 104, wherein the inner bag 112 has a more elongated shape in the anteroposterior direction of the vehicle than in the width direction of the vehicle, and the inner bag 112 further includes a restraining part 114 which is exposed on the recessed surface from the opening 116 to the seat side.

To effectively retain a deployed airbag without increasing installation man hours, in addition to suppressing rotation of this airbag in a direction away from a seat. For example, a side airbag apparatus 1 installed inside a backrest SB of the seat S includes: an airbag 2; an inflator 3 provided inside the airbag 2; a tether 4; and a bracket 5. The airbag 2 is deployed in a first direction in which a base end side 2a thereof is attached to a seat back frame SBF and the tip side thereof is distant from the backrest SB. The tether 4 includes: one end 4a attached to the seat back frame SBF; and the other end which extends in the first direction on the outer surface of the airbag 2 in the deployed state so as to be attached to the part on the tip side 2b of the airbag 2. A bracket 5 is attached to the seat back frame SBF and provided in the direction in which the tether 4 extends. The tether 4 is supported by the front end of the bracket 5.

A seat airbag apparatus for a vehicle is disclosed. A side cushion is deployed so as to protrude forward from a seatback in order to protect the lateral sides of an occupant, and a front cushion is deployed so as to protrude from the side cushion to the front of the occupant in order to protect the front side of the occupant. The deployment of the side cushion and the front cushion is limited by an upper dual-surface tether structure, formed by an upper-side surface tether and an upper-front surface tether, and a lower dual-surface tether structure, formed by a lower-side surface tether and a lower-front surface tether, thereby increasing force with which movement of the occupant is restricted, thus further enhancing an occupant protection effect.

A vehicle seat of a motor vehicle has a side airbag provided on the vehicle seat, and a tension band assembly which includes a first tension band and a second tension band. The first tension band has an upper end and a lower end. The upper end of the first tension band is fixed in the region of the upper end of the backrest of the vehicle seat while the lower end is arranged in the region of the seat surface of the vehicle seat. The second tension band has an upper end and a lower end. The upper end of the second tension band is fixed in the region of the head support on the vehicle seat while the lower end is rigidly connected to the first tension band below the upper end of the first tension band. The tension band assembly is rigidly connected to the side airbag.

A side airbag device capable of restricting an occupant from moving to the inner side in the vehicle width direction while restraining the head of the occupant is inflatable and deployable in a space beside an occupant seated in a vehicle seat. The side airbag device includes an inflator configured to generate a gas and a bag-shaped airbag inflatable and deployable in response to the gas upon activation of the inflator to protect a lateral portion of the occupant. The airbag includes a torso protection portion, and a head protection portion configured to be provided above the torso protection portion and inflatable and deployable between an upper portion of a shoulder of the occupant and a lateral portion of a head of the occupant. The head protection portion is bendable at an acute angle relative to the torso protection portion in an inflated and deployed state of the airbag.