Patent ID: 7681909

Claim:
An airbag device having an airbag that is housed in a state of being able to inflate and deploy in front of an occupant, comprising: a center chamber; side chambers positioned on both the left and right sides of said center chamber; and a gas supply section that supplies inflation gas to inside of said side chambers, and a means for introducing inflation gas to inside of said center chamber; wherein said side chamber each have a gas introduction space into which inflation gas from said gas supply section is introduced, an upper space that branches from said gas introduction space and extends upward, and a lower space that branches from said gas introduction space and extends downward; wherein said airbag includes a front face panel that forms a surface on the occupant side of said center chamber, a first rear panel that forms an outer circumferential surface of said side chambers, and a second rear panel having an outer shape substantially the same as that of said first rear panel; wherein each of said side chambers is formed by joining outer circumferences of said first rear panel and said second rear panel, and said center chamber is formed by said second rear panel and said front face panel.