Air-bag device

Abstract

In an airbag (2), a length extending from a sewn portion (10) to a right periphery of a presser plate (13) is set such that a length (L1) is shorter than a length (L2) wherein the length (L2) is at an attachment side base cloth (3) side and the length (L1) is at a cloth-like piece (9) side. When the airbag (2) is expanded in emergency situations, the attachment side base cloth (3) is expanded while it moves away outwardly from the cloth-like piece (9), thereby opening a vent hole (8), so that the airbag (2) is eased in abrupt expansion directing toward an occupant. When the airbag (2) becomes a sufficient size to protect the occupant, it bends instantaneously a retaining plate (17) to release the parallel portion (9B) of the cloth-like piece (9) from the presser plate (13), so that the cloth-like piece (9) is brought into intimate contact with the attachment side base cloth (3) to close the vent hole (8), thereby protecting the occupant with reliability.

Dependencies are inferred from the claim text.