| 摘要 |
To enable effectively binding the front, the head and the neck of an occupant in a vehicular passive safety device that binds the occupant by inflating the webbing. As an upper portion of an inflated portion of webbing of an air belt system is located in a position in which each side of the head H and the neck N of an occupant can be protected, it is needless to say that the front B of the occupant can be softly bound with the inflated portion in a head-on collision. The head H and the neck N of the occupant are softly bound in a side impact and the air belt system can also function as a side air bag system and an air curtain system. In addition, as the thickness of the portion to be inflated becomes thinner downwardly from the upper portion, the required capacity of an inflator can be reduced by reducing the volume of a lower portion of the inflated portion in which required binding force can be easily acquired even if the lower portion is thinned.
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