Airbag assemblies are disclosed that can reduce rotational velocity of an occupant's head during a collision event and thereby mitigate traumatic brain injury/head injury to an occupant. An airbag includes a pair of lobes or protrusions to deploy and extend from the rear face of the airbag on either side of the occupant's head to limit rotation of the head. A pair of vertical tethers within an interior of the airbag configure the lobes and contour the rear face to form one or more low fabric tension zones or bubbles. The lobes maintain high fabric tension, similar to a pressurization of a main inflatable chamber of the airbag.

Airbag assemblies are disclosed that can reduce rotational velocity of an occupant's head during a collision event and thereby mitigate traumatic brain injury/head injury to an occupant. An airbag includes a pair of lobes or protrusions to deploy and extend from the rear face of the airbag on either side of the occupant's head to limit rotation of the head. A pair of vertical tethers within an interior of the airbag configure the lobes and contour the rear face to form one or more low fabric tension zones or bubbles. The lobes maintain high fabric tension, similar to a pressurization of a main inflatable chamber of the airbag.

The airbag device includes an airbag including a base fabric and an occupant protection fabric whose outer peripheries are joined together. The occupant protection fabric is positioned on the vehicle rear side of the base fabric and configured to restrain an occupant, and includes: at least one protruding portion that protrudes to the vehicle rear side; a flat portion that is continuously formed from the at least one protruding portion and is designed to come into contact with the occupant; and a tether that is disposed between the base fabric and the at least one protruding portion in the airbag, extending from the flat portion to the joint between the occupant protection fabric and the base fabric. The tether is joined at its end on the joint side with a base edge of the at least one protruding portion and the outer periphery of the base fabric.

A frontal airbag for vehicle occupants comprises a contact panel (26) facing the vehicle occupant in the inflated state. Inside the airbag tension means (30, 30′) which restrain portions of the contact panel (26) in the inflated state of the frontal airbag (10) are arranged on the contact panel (26) so that, in the mounted and inflated state, the contact panel (26) forms plural indentations (32) extending vertically from the view of the associated occupant. The frontal airbag (10) optionally may take a first completely inflated state and a second completely inflated state with a larger airbag volume than in the first state, wherein a release device (40) is assigned to at least several of the tension means (30, 30′) and, when the release device is not activated, the frontal airbag (10) only reaches the first state and, when the release device (40) is activated, the contact panel (26) bulges in the area of the released tension means (30, 30′) further toward the occupant so as to enable the second state.

A frontal airbag for vehicle occupants comprises a contact panel (26) facing the vehicle occupant in the inflated state. Inside the airbag tension means (30, 30′) which restrain portions of the contact panel (26) in the inflated state of the frontal airbag (10) are arranged on the contact panel (26) so that, in the mounted and inflated state, the contact panel (26) forms plural indentations (32) extending vertically from the view of the associated occupant. The frontal airbag (10) optionally may take a first completely inflated state and a second completely inflated state with a larger airbag volume than in the first state, wherein a release device (40) is assigned to at least several of the tension means (30, 30′) and, when the release device is not activated, the frontal airbag (10) only reaches the first state and, when the release device (40) is activated, the contact panel (26) bulges in the area of the released tension means (30, 30′) further toward the occupant so as to enable the second state.

The present application relates to an airbag cushion comprising the reinforcing fabric and a method for preparing the same. According to the present application, adequate levels of tenacity, elongation, dimensional stability, impact resistance and the like required for an airbag cushion and its reinforcing fabric are simultaneously met.

The present application relates to an airbag cushion comprising the reinforcing fabric and a method for preparing the same. According to the present application, adequate levels of tenacity, elongation, dimensional stability, impact resistance and the like required for an airbag cushion and its reinforcing fabric are simultaneously met.

An airbag fabric is excellent in slippage amount and strength in a sewn portion. The airbag fabric is made of a synthetic fiber, the fabric having a constant (load of 98 N/30 mm) elongation of 1 to 5% and having a residual strain rate of 0.1 to 1.5%, the residual strain rate being obtained when the fabric is allowed to stand still for 10 minutes from the removal of the 98 N/30 mm load after the retention of the fabric for 10 minutes while the 98 N/30 mm load is applied to the fabric. The strength in the sewn portion is preferably 1200 N or more in each of the warp and the weft.

An airbag fabric is excellent in slippage amount and strength in a sewn portion. The airbag fabric is made of a synthetic fiber, the fabric having a constant (load of 98 N/30 mm) elongation of 1 to 5% and having a residual strain rate of 0.1 to 1.5%, the residual strain rate being obtained when the fabric is allowed to stand still for 10 minutes from the removal of the 98 N/30 mm load after the retention of the fabric for 10 minutes while the 98 N/30 mm load is applied to the fabric. The strength in the sewn portion is preferably 1200 N or more in each of the warp and the weft.

A method for manufacturing a one-piece woven (OPW) air bag includes providing yarns and warping the yarns on at least one beam of a loom. Yarns are simultaneously woven into a fabric air bag structure having two layer portions defining both an inflatable volume and non-inflatable portions and single layer portions forming seams delimiting the inflatable volume. The air bag structure is cut to define the OPW air bag and at least one opening extending through only one layer of the two layer portions.