A knee airbag device includes: an airbag case disposed at a lower face part of an instrument panel; a knee airbag accommodated within the airbag case in a folded state, the knee airbag inflating and deploying toward a vehicle rear side and a vehicle upper side upon being supplied with gas; and an airbag door part disposed at a vehicle lower side of the airbag case, the airbag door part having a substantially U-shaped rupture target part, the rupture target part is open toward a vehicle front side as seen in a plan view, at a portion, of a bottom wall part configuring a vehicle lower side face of the airbag door part, disposed rearward of an intermediate part of the airbag door part in a vehicle front-rear direction, and the portion of the bottom wall part disposed rearward of the intermediate part opening toward a vehicle lower side upon rupture of the rupture target part caused by inflation pressure of the knee airbag.

A knee airbag module of a vehicle occupant restraint system comprises an outer housing (12) having a front side (14) including a deployment aperture (18) as well as an opposite rear side (16), an airbag (20) and an inflator (32) which provides filling gas for the deployment of the airbag (20). The airbag (20) is folded and in the folded state is retained by a flexible airbag wrapping (34) while forming an airbag package (24), wherein the airbag package (24) constitutes a pre-assembled unit and the flexible airbag wrapping (34) closes off the knee airbag module (10) at least in portions to the outside. There is provided a rigid outer housing part (42) which includes a first bearing zone (54) positioned in the area of the airbag package (24) against which the airbag (20) bears during deployment.

A knee airbag module of a vehicle occupant restraint system comprises an outer housing (12) having a front side (14) including a deployment aperture (18) as well as an opposite rear side (16), an airbag (20) and an inflator (32) which provides filling gas for the deployment of the airbag (20). The airbag (20) is folded and in the folded state is retained by a flexible airbag wrapping (34) while forming an airbag package (24), wherein the airbag package (24) constitutes a pre-assembled unit and the flexible airbag wrapping (34) closes off the knee airbag module (10) at least in portions to the outside. There is provided a rigid outer housing part (42) which includes a first bearing zone (54) positioned in the area of the airbag package (24) against which the airbag (20) bears during deployment.

An air bag mounting interior trim that efficiently pressurizes and welds ribs of a retainer and an instrument panel includes: a retainer having a first wall portion disposed at a deployment side of the air bag; and a panel having a second wall portion opposed to the first wall portion, at the deployment side of the first wall portion. The first and second wall portions each have an inclined face inclined in a pressurizing direction at assembly of the retainer and the panel. The retainer has a first rib protruding along the pressurizing direction from the inclined face of the first wall portion toward the panel side. The panel has a second rib protruding along the pressurizing direction from the inclined face of the second wall portion toward the retainer side. The first and second ribs have weld end faces that face each other in parallel, and that are aligned with the pressurizing direction.

An air bag mounting interior trim that efficiently pressurizes and welds ribs of a retainer and an instrument panel includes: a retainer having a first wall portion disposed at a deployment side of the air bag; and a panel having a second wall portion opposed to the first wall portion, at the deployment side of the first wall portion. The first and second wall portions each have an inclined face inclined in a pressurizing direction at assembly of the retainer and the panel. The retainer has a first rib protruding along the pressurizing direction from the inclined face of the first wall portion toward the panel side. The panel has a second rib protruding along the pressurizing direction from the inclined face of the second wall portion toward the retainer side. The first and second ribs have weld end faces that face each other in parallel, and that are aligned with the pressurizing direction.

A passenger protection device for a front passenger seat includes: an upper airbag that is installed in a front header of a vehicle, and is configured to inflate and deploy at a time of a frontal collision of the vehicle so as to be supported by a windshield from a front side of the vehicle; and a lower airbag that is provided separately from the upper airbag and installed at a front end of a vehicle cabin below the windshield in a vehicle height direction, the lower airbag being configured to inflate and deploy at the time of the frontal collision so as to be supported by a dashboard including an instrument panel from the front side of the vehicle.

A passenger protection device for a front passenger seat includes: an upper airbag that is installed in a front header of a vehicle, and is configured to inflate and deploy at a time of a frontal collision of the vehicle so as to be supported by a windshield from a front side of the vehicle; and a lower airbag that is provided separately from the upper airbag and installed at a front end of a vehicle cabin below the windshield in a vehicle height direction, the lower airbag being configured to inflate and deploy at the time of the frontal collision so as to be supported by a dashboard including an instrument panel from the front side of the vehicle.

A passenger protection device for a front passenger seat includes: an upper airbag that is installed in a front header of a vehicle, and is configured to inflate and deploy at a time of a frontal collision of the vehicle so as to be supported by a windshield from a front side of the vehicle; and a lower airbag that is provided separately from the upper airbag and installed at a front end of a vehicle cabin below the windshield in a vehicle height direction, the lower airbag being configured to inflate and deploy at the time of the frontal collision so as to be supported by a dashboard including an instrument panel from the front side of the vehicle.

A passenger protection device for a front passenger seat includes: an upper airbag that is installed in a front header of a vehicle, and is configured to inflate and deploy at a time of a frontal collision of the vehicle so as to be supported by a windshield from a front side of the vehicle; and a lower airbag that is provided separately from the upper airbag and installed at a front end of a vehicle cabin below the windshield in a vehicle height direction, the lower airbag being configured to inflate and deploy at the time of the frontal collision so as to be supported by a dashboard including an instrument panel from the front side of the vehicle.

A knee-airbag-device attachment structure comprises knee-airbag devices and vehicle-body side brackets which connect the knee-airbag devices and hinge pillars of a vehicle body, respectively. This knee-airbag-device attachment structure further comprises an instrument-panel-member supporting-post side bracket which connects the knee-airbag device to an instrument-panel-member supporting post which is provided to extend between an instrument panel member and a tunnel portion of a floor panel.