Abstract: A head-protecting airbag device includes: an airbag body; and a connecting piece which is formed of a sheet material with flexibility, wherein: the airbag body and the connecting piece constitute an airbag having a bag shape inflatable to cover an inboard side of a window of a vehicle; the airbag body includes an inboard side wall disposed on the inboard side at the time of inflation completion, an outboard side wall disposed on an outboard side, and a coupling target portion coupling the connecting piece; the coupling target portion is configured to be divided into an inboard side portion and an outboard side portion; and the root end of the connecting piece is nipped between the inboard side portion and the outboard side portion, and is coupled with the inboard side portion and the outboard side portion so as to be connected with the airbag body.

Abstract: An airbag device includes: a gas generator which is extended along an axial line thereof and which includes: a generator body including a gas injection section at one end section; and an installing protrusion protruding from an outer face of the generator body; and an airbag which includes a bag body developed and inflated by an inflation gas supplied from the gas injection section. The gas generator and the airbag are installed on a vehicle by the installing protrusion. The bag body includes an insertion port having a size allowing the gas injection section to pass through and not allowing a portion of the gas generator provided with the installing protrusion to pass through. The gas injection section is disposed inside the bag body, and the installing protrusion is disposed outside the bag body.