Patent ID: 7390020

Claim:
An airbag comprising: a left airbag section to be inflated on a left side in front of a passenger, a right airbag section to be inflated on a right side in front of the passenger, and formed separately from the left airbag section, a communicating section connected to one end of the left airbag section and one end of the right airbag section, and a first belt strap disposed in one of the left airbag section and the right airbag section located closer to a vehicle body side, said first belt strap connecting a first portion of the one of the left airbag section and the right airbag section on the vehicle body side and a second portion opposite thereto so that when the one of the left and right airbag sections with the first belt strap is completely inflated, a height H 1 from a lowest level of the airbag where the first belt strap is formed to the first portion in a vertical cross section is within a range from 0.4 H to 0.8 H, and a height H 2 from the lowest level to the second portion in the vertical cross section is within a range from 0.3 H to 0.6 H and is smaller than H 1 , wherein H represents an entire height of the airbag where the belt trap is formed in vertical cross section, wherein said first portion is located adjacent to an upper corner of the one of the left and right airbag sections on the vehicle body side so that when the one of the left and right airbag sections is completely inflated, the upper corner is pulled inwardly by the second portion to form an inclined shape at the upper corner.