Patent ID: 7753405
Filing Date: 2010-07-13
Classification: B60R

Abstract:
1. An air bag system comprising: an air bag accommodated within an accommodating portion; and an opening and closing control unit of a discharge port disposed on the accommodating portion, wherein the air bag includes a bag main body having an inlet opening, a discharge portion having the discharge port, and a connecting member disposed within the bag main body such that a first end thereof is connected to the discharge portion and a second end thereof is connected to the opening and closing control unit, the air bag is inflated by introducing a gas into an interior of the air bag through the inlet opening and discharges a part of the gas by opening the discharge port; the bag main body is formed by joining circumferential edges of a plurality of main body base sheets to each other, the discharge portion includes a pair of extended portions extended from the main body base sheets, the extended including respective tip ends and foot portions located separately from the tip ends, the extended portions are connected to the first end of the connecting member, and a slit for forming the discharge port is located at the foot portions of the respective extended portions, and is formed as a non-joined portion along a seaming line joining the circumferential edges of the main body base sheets, when the air bag is accommodated in the accommodating portion, the extended portions are superposed and accommodated in the interior of the air bag, and when the air bag is inflated, the slit for the discharge port is closed by maintaining the second end of the connecting member to be connected to the opening and closing control unit, and subsequently, at least a part of the discharge portion protrudes to an exterior of the air bag to thereby cause the slit to be opened to form the discharge port, by releasing connection of the second end of the connecting member to the opening and control unit to cancel a drawing tension of the connecting member to the discharge portion in the interior of the air bag.