AIR BAG, AIR BAG APPARATUS, AND STEERING WHEEL

摘要

An air bag apparatus comprising first and second base fabrics (41, 42) constituting an air bag (1) and an intermediate base fabric (43) provided between the first and the second base fabrics to divide the interior of the air bag (1) into first and second compartments (45, 46), wherein communication ports (51) are provided in an outer circumferential portion of the intermediate base fabric (43) to allow communication between these compartments (45, 46), a central joint (53) provided in a central portion of the intermediate base fabric (43) being fixed to a retainer (14), and an intermediate joint (57) being provided between the central joint (53) and an outer circumferential portion (44) for connecting the intermediate and the second base fabrics (43, 42) together. A gas introduced into the first compartment (45) inflates the same flat, then flows into the second compartment (46), which is positioned on the side of an occupant, via the communication ports (51), and finally flows outside from a first discharge port (58) of the second compartment (46). The second compartment (46) is provided with an auxiliary second discharge port, so that a pressure on the occupant can be lessened even when the air bag apparatus (2) is operated while the occupant assumes an extreme posture in which he contacts the air bag apparatus (2).