Gas generator

Abstract

A gas generator including, at least, a cup member containing a gas generant that burns to generate gas, and a holder provided with an ignition device that has at least one conductive pin and ignites the gas generant. The holder is provided with one or more through holes through which the conductive pins pass and one or more non-through holes through which the conductive pins do not pass. And, with respect to a rupture pressure from a gas generant side to the holder, when a pressure occurs toward an outside of the gas generator, the rupture pressure of the through hole through which the conductive pin passes is adjusted to be higher than the rupture pressure of the non-through hole through which the conductive pin does not pass.

1 - 8 . (canceled)  
   
   
       9 . A gas generator comprising: 
 a cup member containing a gas generant that burns to generate gas; and    a holder provided with an ignition device that has at least one conductive pin and ignites said gas generant,    wherein:    said holder comprises one or more through holes through which said conductive pins pass and one or more non-through holes through which said conductive pins do not pass; and    with respect to a rupture pressure from said gas generant side to said holder, when a pressure occurs toward an outside of said gas generator, said rupture pressure of said through hole through which said conductive pin passes is adjusted to be higher than said rupture pressure of said non-through hole through which said conductive pin does not pass.    
   
   
       10 . The gas generator as claimed in  claim 9 , wherein a rupture open area of said non-through hole through which said conductive pin does not pass is equal to or larger than a rupture open area of said thorough hole through which said conductive pin passes.  
   
   
       11 . The gas generator as claimed in  claim 9 , wherein said holder is formed integrally with said ignition device by a resin.  
   
   
       12 . The gas generator as claimed in  claim 10 , wherein said holder is formed integrally with said ignition device by a resin.  
   
   
       13 . The gas generator as claimed in  claim 9 , wherein: 
 said holder is formed integrally with said ignition device by a resin; and    a base portion of said non-through hole through which said conductive pin does not pass is made of said resin.    
   
   
       14 . The gas generator as claimed in  claim 10 , wherein: 
 said holder is formed integrally with said ignition device by a resin; and    a base portion of said non-through hole through which said conductive pin does not pass is made of said resin.    
   
   
       15 . The gas generator as claimed in  claim 9 , wherein: 
 said holder is formed integrally with said ignition device by a resin;    a base portion of said non-through hole through which said conductive pin does not pass is made of said resin; and    said holder is insert molded by said resin with a reinforcement member made of a rigid material having a higher strength than said resin.    
   
   
       16 . The gas generator as claimed in  claim 10 , wherein: 
 said holder is formed integrally with said ignition device by a resin;    a base portion of said non-through hole through which said conductive pin does not pass is made of said resin; and    said holder is insert molded by said resin with a reinforcement member made of a rigid material having a higher strength than said resin.    
   
   
       17 . The gas generator as claimed in  claim 9 , wherein: 
 said holder is formed integrally with said ignition device by a resin;    a base portion of said non-through hole through which said conductive pin does not pass is made of said resin;    said holder is insert molded by said resin with a reinforcement member made of a rigid material having a higher strength than said resin; and    said reinforcement member is provided with one or more through holes through which said conductive pins pass and one or more non-through holes through which said conductive pins do not pass.    
   
   
       18 . The gas generator as claimed in  claim 10 , wherein: 
 said holder is formed integrally with said ignition device by a resin;    a base portion of said non-through hole through which said conductive pin does not pass is made of said resin;    said holder is insert molded by said resin with a reinforcement member made of a rigid material having a higher strength than said resin; and    said reinforcement member is provided with one or more through holes through which said conductive pins pass and one or more non-through holes through which said conductive pins do not pass.    
   
   
       19 . The gas generator as claimed in  claim 9 , wherein a depth of said non-through hole through which said conductive pin does not pass is within a range of 60 to 90% of a length of said holder from one end to the other end thereof inclusive of said non-through hole through which said conductive pin does not pass and said base portion of said non-through hole.  
   
   
       20 . The gas generator as claimed in  claim 9 , wherein a relationship among a minimum thickness of said base portion of a connector attachment hole of said holder, a diameter of said base portion of said connector attachment hole, said thickness of said base portion of said non-through hole through which said conductive pin does not pass, and a diameter of an inscribed circle in said non-through hole, satisfies a following relationship that: 
 said thickness of said base portion of said non-through hole through which said conductive pin does not pass<{said diameter of said inscribed circle in said non-through hole×said minimum thickness of said base portion of said connector attachment hole}/said diameter of said base portion of said connector attachment hole.