Patent ID: 9278660
Filing Date: 2016-03-08
CPC Classification: B60R

Claim Text:
1. A front passenger seat airbag that is accommodated in an instrument panel in front of a front passenger seat of a vehicle, comprising: a gas inlet port that is provided at substantially the lateral center of a lower surface in the vicinity of a front end when the airbag is completely inflated; a concave portion that is disposed toward an occupant so as to be concave toward the front when the airbag is completely inflated; two protrusion portions that are disposed on left and right sides of the concave portion so as to protrude to the rear, and a support inflation portion that protrudes downwards from a portion of the airbag, which is positioned on a rear side of the gas inlet port, that is in contact with a region of the instrument panel, which is positioned on a rear side of an accommodating portion when the airbag is completely inflated, and that is supported by the instrument panel, wherein the airbag has a bag shape in which circumferential edges of outer left and right panels that are disposed on outer sides in a lateral direction when the airbag is completely inflated are joined with circumferential edges of inner left and right panels that are disposed on an inner side in the lateral direction when the airbag is completely inflated, respectively, wherein the inner left and the inner right panels are a pair of left and right panels, each of which bends so as to form a substantially C shape, wherein a protruding apex portion of each of the protruding portions is formed of each of left and right outer joining portions that are formed by joining the outer circumferential edges of the outer left and the outer right panels with the outer circumferential edges of the inner left and the inner right panels, respectively, wherein a bottom portion of the concave portion is formed of an inner joining portion that is formed by joining together respective inner circumferential edges of the inner left and the inner right panels, wherein when each of the inner left and the inner right panels is flatly deployed in a state where a vertical direction of each of the inner left and the inner right panels coincides with a vertical direction of the completely inflated airbag, each of the inner left and the inner right panels includes a front lower edge, which intersects the inner circumferential edge and the outer circumferential edge at a front lower end, wherein the outer left and the outer right panels include respective outer left and right panel main bodies; respective inlet port configuration portions that are positioned in front portions at lower edges of the outer left panel and the outer right panel main bodies, and form circumferential edges of the gas inlet port; and support inflation configuration portions that are respectively positioned in rear portions at the lower edges of the outer left panel and the outer right panel main bodies so as to form the support inflation portions, wherein the outer left and the outer right panels are substantially symmetrical with each other in at least the support inflation configuration portions, wherein the support inflation configuration portion has a substantially belt-like shape in which when the outer left and the outer right panels are flatly deployed in a state where a vertical direction of the each of the outer left panel and the outer right panel coincides with the vertical direction of the completely inflated airbag, the support inflation configuration portion is adjacent to the rear of the inlet port configuration portion, and the support inflation configuration portion is inclinedly disposed in such a manner that the support inflation configuration portion extends to the rear from the inlet port configuration portion, and a rear end of the support inflation configuration portion is separated from each of the outer left panel and the outer right panel main bodies, wherein the lower edge of the support inflation configuration portion and an upper edge, which is separated from the outer circumferential edge of each of the outer left panel and the outer right panel main bodies at the rear end of the support inflation configuration portion, are disposed so as to protrude downwards further than a datum line which is obtained by projecting a center extension line, which is obtained by extending a center line that is disposed along the longitudinal direction so as to pass through an opening plane and the center of the gas inlet port at the installation of the airbag in a vehicle, on each of the outer left and the outer right panels which are flatly deployed, and wherein the support inflation portion is formed by joining together the respective lower edges of the support inflation configuration portions, by joining the respective upper edges of the support inflation configuration portions with portions of the corresponding outer circumferential edges of the outer left panel and the outer right panel main bodies, which are positioned in front of the respective outer joining portions, and by respectively joining the rear edges, each of which intersects the lower edge and the upper edge at the rear end of the support inflation configuration portion, with the corresponding front lower edges of the inner left and the inner right panels.