BAG COVER OF AIRBAG DEVICE

PROBLEM TO BE SOLVED: To provide a bag cover of an airbag device, stably inflating the central area in the longitudinal direction of a lid in the first place in the initial stage for deploying a bag body, without requiring a complicated adjustment.SOLUTION: A hinge of a cover inner 36 for connecting a lid wall 48 and a sidewall 46 is constituted of a plurality of belt-like pieces 53, etc. The thickness of the belt-like pieces 53, etc. arranged in the central area D in the longitudinal direction is set thinner than the thickness of the belt-like pieces 53, etc. arranged in an end area. When the lid wall 46 is pressed under the bag body when deploying the bag body, the belt-like pieces 53, etc. of the central area D of a thin thickness are bendably deformed in the first place, and promote inflation deformation in the central area of the lid wall 48.