Patent ID: 7066490

Claim:
An airbag device comprising an airbag inflated by admitting an inflating gas and including an outer wall at the completion of inflation and an auxiliary inflation portion arranged within said airbag body, wherein said airbag body includes a gas inlet port through which inflating gas can enter, wherein said auxiliary inflation portion communicates with said gas inlet port and inflates to protect a passenger before the completion of inflation of said airbag body, wherein said auxiliary inflation portion includes gas outlet ports for allowing the inflating gas flowing at the time of inflation to flow out to said airbag body and is constructed to end its inflated state by breaking at a portion removed from the outer wall of said airbag body before the completion of inflation of said airbag body, wherein said auxillary inflation portion can inflate to retain the cushioning action to protect the passenger by raising an internal pressure therein, before the completion of inflation of the airbag body, wherein the outer wall of said airbag body includes a vehicle front-facing wall portion having said gas inlet port, and a passenger-facing wall portion directly opposite said gas inlet port, wherein the auxiliary inflation portion of said airbag is joined to said passenger-facing wall portion and can regulate the spacing distance of said passenger-facing wall portion from said gas inlet port so as to prevent the protrusion of said airbag body toward the passenger at the beginning of inflation, and wherein the regulation of said spacing distance is ended by the breakage of said auxiliary inflation portion, thereby allowing completion of the inflation of said airbag body.