A roof airbag module includes an airbag configured to inflate and deploy away from a vehicle roof toward a vehicle seat. The airbag module also includes an airbag housing configured to support the airbag in a stored condition in which the airbag is deflated and at least one of rolled and folded. The airbag module also includes an inflator that is actuatable to direct inflation fluid into the airbag to inflate the airbag. The airbag module further includes a module cover connected to the airbag housing and configured to conceal the airbag in the stored condition. The module cover includes a deployment door having an interior surface facing an interior of the housing and engaging the airbag in the stored condition, and an opposite exterior surface comprising a class A surface configured to be in direct view from the passenger compartment. The interior surface of the deployment door comprises one or more tear seams configured to rupture in response to airbag inflation, which opens the deployment door and releases the airbag to inflate and deploy.

A roof airbag module includes an airbag configured to inflate and deploy away from a vehicle roof toward a vehicle seat. The airbag module also includes an airbag housing configured to support the airbag in a stored condition in which the airbag is deflated and at least one of rolled and folded. The airbag module also includes an inflator that is actuatable to direct inflation fluid into the airbag to inflate the airbag. The airbag module further includes a module cover connected to the airbag housing and configured to conceal the airbag in the stored condition. The module cover includes a deployment door having an interior surface facing an interior of the housing and engaging the airbag in the stored condition, and an opposite exterior surface comprising a class A surface configured to be in direct view from the passenger compartment. The interior surface of the deployment door comprises one or more tear seams configured to rupture in response to airbag inflation, which opens the deployment door and releases the airbag to inflate and deploy.

A vehicle occupant restraint system comprises an airbag module (12) including an inflator (18) and a frontally acting airbag (16), wherein the airbag (16) includes an inflator-side inflation end (46) as well as a first free end (56) located in the inflated state of the airbag (16) within a vehicle interior. In a first period during deployment of the airbag (16), the first free end (56) is still connected via a tether (74) to the airbag module (12), wherein the tether (74) becomes detached upon reaching a predetermined tensile force. When folding the airbag (16), the non-inflated airbag (16) is spread so that a second free end (58) is maximally distant from the inflation end (46) and a first outer wall portion is stretched in the longitudinal direction of the airbag (16), and the first free end (56) is located in the vicinity of the inflation end (46) and a second outer wall portion is stretched in the longitudinal direction of the airbag (16), wherein a third outer wall portion of the airbag (16) is folded back onto itself at least in a portion. The two lateral areas of the spread airbag (16) are folded toward the center, and subsequently the airbag (16) is rolled up from the second free end (58).

A vehicle occupant restraint system comprises an airbag module (12) including an inflator (18) and a frontally acting airbag (16), wherein the airbag (16) includes an inflator-side inflation end (46) as well as a first free end (56) located in the inflated state of the airbag (16) within a vehicle interior. In a first period during deployment of the airbag (16), the first free end (56) is still connected via a tether (74) to the airbag module (12), wherein the tether (74) becomes detached upon reaching a predetermined tensile force. When folding the airbag (16), the non-inflated airbag (16) is spread so that a second free end (58) is maximally distant from the inflation end (46) and a first outer wall portion is stretched in the longitudinal direction of the airbag (16), and the first free end (56) is located in the vicinity of the inflation end (46) and a second outer wall portion is stretched in the longitudinal direction of the airbag (16), wherein a third outer wall portion of the airbag (16) is folded back onto itself at least in a portion. The two lateral areas of the spread airbag (16) are folded toward the center, and subsequently the airbag (16) is rolled up from the second free end (58).

A vehicle occupant restraint system comprises an airbag module (12) which includes an airbag (16) as well as an inflator (18) which upon activation supplies filling gas for the airbag (16). The airbag (16) is folded prior to activation into an airbag package (14) so that a main package (48) which contains a restraint part (52) of the airbag (16) constituting a major part of the airbag volume as well as a connecting portion (50) is formed which comprises a neck (54) of the airbag (16) connecting the restraint part (52) to the inflator (18), wherein the restraint part (52) is folded differently from the neck (54).

A vehicle occupant restraint system comprises an airbag module (12) which includes an airbag (16) as well as an inflator (18) which upon activation supplies filling gas for the airbag (16). The airbag (16) is folded prior to activation into an airbag package (14) so that a main package (48) which contains a restraint part (52) of the airbag (16) constituting a major part of the airbag volume as well as a connecting portion (50) is formed which comprises a neck (54) of the airbag (16) connecting the restraint part (52) to the inflator (18), wherein the restraint part (52) is folded differently from the neck (54).

A vehicle and control method include: a seat; an image acquirer to acquire an image of the seat; a first type of roof airbag module in a fixed position in a first area of a headlining; a rail member in a second area of the headlining in a left-right direction of a vehicle body; a second type of roof airbag module in the rail member and movable in left and right directions along the rail member; an angle detector to detect a rotation angle of the seat; and a controller. The controller identifies the seat rotation angle based on the image of the seat and controls activation of at least the first type of roof airbag module or the second type of roof airbag module based on at least the seat rotation angle based on the image of the seat or detected by the angle detector.

A vehicle and control method include: a seat; an image acquirer to acquire an image of the seat; a first type of roof airbag module in a fixed position in a first area of a headlining; a rail member in a second area of the headlining in a left-right direction of a vehicle body; a second type of roof airbag module in the rail member and movable in left and right directions along the rail member; an angle detector to detect a rotation angle of the seat; and a controller. The controller identifies the seat rotation angle based on the image of the seat and controls activation of at least the first type of roof airbag module or the second type of roof airbag module based on at least the seat rotation angle based on the image of the seat or detected by the angle detector.

A roof airbag apparatus for a vehicle in which an airbag deploys downward from the interior roof and protects occupants seated in seats and the airbag has a bending shape by a tether so that the restraint on occupants is secured and the occupants are safely protected.

A roof airbag apparatus for a vehicle in which an airbag deploys downward from the interior roof and protects occupants seated in seats and the airbag has a bending shape by a tether so that the restraint on occupants is secured and the occupants are safely protected.