Patent ID: 6685219
Filing Date: 2004-02-03
Classification: B60R

Abstract:
An air bag arrangement comprising a vehicle and an air bag device including a curtain shape air bag which is developed from a front pillar side to a rear pillar side along a roof rail of an inner wall of the vehicle, by injecting a gas from an inflator which operates when a high load acts on a side portion of the vehicle, wherein a protecting inflatable portion which is inflated by an operation of said inflator to protect an occupant, and at least one cylindrical inflatable portion which communicates with said protecting inflatable portion, and which is inflated by the inflator in a continuous cylindrical manner and extends from a vicinity of an upper edge to a vicinity of a lower edge, are disposed in the curtain shape air bag,said curtain shape air bag is accommodated in a folded or wound manner while a plurality of portions of the upper edge of said curtain shape air bag are attached to a plurality of mounting points disposed in said roof rail, one of both end portions of said lower edge is attached to a mounting point disposed in said front pillar side, and another end portion is attached to a mounting point disposed in said rear pillar side, at least one of said mounting points in said front pillar side and said rear pillar side for attaching said both end portions of said lower edge is disposed in a position lower than said mounting points of said roof rail, and said curtain shape air bag is configured so that, in a condition in which the folding or winding is released and gas is not injected, said mounting points of said both ends of said lower edge suspend said lower edge, at a position beneath said cylindrical inflatable portion, at a first distance from said roof rail which is less than a length of said air bag from said upper edge, at a position above said cylindrical inflatable portion, to said lower edge, at the position beneath said cylindrical inflatable portion, when said air bag is laid flat in an uninstalled state to thereby produce slack in said cylindrical inflatable portion, and said cylindrical inflatable portion extends to eliminate the slack at the inflation due to injection of the gas, thereby applying tension to said lower edge of said curtain shape air bag.