| 摘要 |
<p>A seated passenger is appropriately restrained from the shoulder portion to waist portion with a restraining force in accordance with the stress resistance of each portion. In a side air-bag device (10), a rear bag portion (26) containing an inflator (22) is expanded and deployed earlier and with greater pressure than a front bag portion (24) of a side air-bag (20). Thus, front portions of a chest portion (C) and a belly portion (B), which have relatively low stress resistance, can be softly restrained by the front bag portion (24), while a shoulder portion (S) and rear portions of the chest portion (C) and the belly portion (B), which have relatively high stress resistance, are restrained by the rear bag portion (26) early. A waist portion (L) of a seated passenger (P), which has higher stress resistance than the shoulder portion (S), the chest portion (C), and the belly portion (B), is restrained by a lower bag portion (28). When an internal pressure of the lower bag portion (28) rises, a flow of gas from the lower bag portion (28) to the rear bag portion (26) is limited by a check valve (61). As a result, the internal pressure of the lower bag portion (28) is maintained in a high state from an initial period to a later period of the restraining.</p> |
