| 摘要 |
<p>The present invention is to prevent an upper arm from being placed between a side air bag and a chest of a sitting occupant and to improve a restraining performance of the side air bag. In a side air bag (20) of a vehicle side air bag device (10), a front bag portion (36) and a rear bag portion (38) are partitioned by a longitudinal partition portion (32). Further, a forward extending portion (38A) provided in an upper part of the rear bag portion (38) so as to restrain a shoulder (S) is partitioned from the front bag portion (36) by an upper partition portion (34) extending diagonally upward toward a front side of a seatback (14) from an upper end of the longitudinal partition portion (32). When an inflator (22) is activated, the rear bag portion (38) is expanded and unfolded at an early stage, so that gas in the rear bag portion (38) is supplied into the front bag portion (36) via a communicating opening provided in the longitudinal partition portion (32). Hereby, it is possible to push up an upper arm (A) by the front bag portion (36), and to restrain, at an early stage, rear parts of a chest (C) and an abdomen (B), and a shoulder (S) by the rear bag portion (38) that is expanded and unfolded at an early stage.</p> |
