Airbag device for vehicles

Abstract

An airbag device for a vehicle includes an airbag that can be inflated to restrain an occupant of the vehicle against the impact of a collision, an inflator for generating gas to inflate the airbag, and a guide passage provided between the inflator and the airbag for guiding the gas into the airbag. The airbag has at least one opening formed therein to provide a fluid communication between the interior and exterior of the airbag, the opening being disposed near the guide passage to perform an aspiratory function efficiently.

1 . An airbag device for a vehicle, comprising: 
 an airbag which can be inflated to restrain an occupant of the vehicle against the impact of a collision;    an inflator for generating gas to inflate the airbag; and    a guide passage provided between the inflator and the airbag for guiding the gas into the airbag,    wherein the airbag has at least one opening formed therein to provide fluid communication between an interior of the airbag and an exterior of the airbag, the at least one opening being disposed near the guide passage,    wherein the airbag has an occupant restraint surface which restrains an occupant when the airbag is deployed, the occupant restraint surface having a protrusion located at a position substantially corresponding to a position of a head of the occupant.    
   
   
       2 . The airbag device according to  claim 1 , wherein the airbag is formed from a woven fabric, and the protrusion is formed on the woven fabric as an integral part thereof.  
   
   
       3 . The airbag device according to  claim 1 , wherein the airbag is formed from a woven fabric, and the protrusion comprises a folded part of the woven fabric.  
   
   
       4 . The airbag device according to  claim 1 , wherein the guide passage comprises: 
 an inlet opening which faces the inflator, and    an outlet opening which faces the interior of the airbag,    wherein the guide passage extends into the interior of the airbag such that the outlet of the guide passage is disposed in the interior of the airbag.