Head protecting airbag device

Abstract

A passenger's seat airbag device is mounted on a vehicle in which a rear wall portion is se arranged on the rear side of a side window. The airbag is folded and housed on the upper edge side of the side window as to cover the side window. The airbag is mounted on its two longitudinal ends. The rear side leading end is mounted on the rear wall portion. In the vicinity of the corner portion, a guide guides the downward protrusion of the airbag and can regulate the movement of the airbag to the interior side when the airbag is extending and expanding.

1 - 7 . (Canceled)  
     
     
         8 . A head protecting airbag device comprising: 
 an airbag folded and housed on the upper edge side of a side window on the interior side of a vehicle; an inflator for feeding an inflating gas to said airbag; guide means mounted on the vehicle body; and engaging means arranged in said airbag for engaging with said guide means,    wherein said airbag extends and expands downward from the upper edge side of said side window, when the inflating gas flows in, to cover the interior side of said side window,    wherein said guide means is so vertically arranged as to guide the downward extension of said airbag,    wherein said guide-engaging portion can be guided by said guide means when the airbag is extending and expanding of said airbag, and    wherein said airbag includes an initial vertical expansion portion arranged to expand along said guide means for moving said guide-engaging portion downward along said guide means at the beginning of the inflow of said inflating gas.    
     
     
         9 . A head protecting airbag device according to  claim 8 , wherein said guide means is arranged and covered on the interior side with an edge portion which can open to the interior side of the interior finish of the vehicle.  
     
     
         10 . A head protecting airbag device according to  claim 9 , 
 wherein said guide means has a flexibility and is arranged to open and protrude the edge portion of said interior finish from the housed position of said guide means to the interior side when the airbag is extending and expanding of said airbag thereby to prevent the interference between airbag and said interior finish.    
     
     
         11 . A head protecting airbag device according to  claim 8 , 
 wherein said airbag includes a plurality of vertical expansion portions for expanding vertically by admitting the inflating gas.    
     
     
         12 . A head protecting airbag device according to  claim 11 , 
 wherein said initial vertical expansion portion is arranged close to the inflator and upstream of the inflating gas.