Abstract: An igniter holding structure includes, an igniter provided with an ignition portion and a conductive pin, a first resin portion provided between the igniter and an attachment portion and holds the igniter such that the ignition portion and a distal end of the conductive pin are located opposite each other, and a second resin portion provided in a circumferential wall portion of the attachment portion and forming a connector insertion portion on an inner side of the circumferential wall portion, the connector insertion portion being a space into which a connector connected to the conductive pin can be inserted and the second resin portion being provided separated from the first resin portion on the inner side of the circumferential wall portion in a manner that an exposed surface, which is made of metal and exposed to the connector insertion portion, is formed in the circumferential wall portion.

Abstract: A technique of improving pressure resistance performance of an igniter assembly is provided. The igniter assembly includes an igniter body including an ignition portion filled with an igniting charge and an electro-conductive portion extending from the ignition portion, an igniter collar including a tubular peripheral wall portion that surrounds at least the electro-conductive portion of the igniter body, and a resin molded article that is interposed between the igniter body and the igniter collar and integrates the igniter body and the igniter collar.

Abstract: An igniter holding structure includes, an igniter provided with an ignition portion and a conductive pin, a first resin portion provided between the igniter and an attachment portion and holds the igniter such that the ignition portion and a distal end of the conductive pin are located opposite each other, and a second resin portion provided in a circumferential wall portion of the attachment portion and forming a connector insertion portion on an inner side of the circumferential wall portion, the connector insertion portion being a space into which a connector connected to the conductive pin can be inserted and the second resin portion being provided separated from the first resin portion on the inner side of the circumferential wall portion in a manner that an exposed surface, which is made of metal and exposed to the connector insertion portion, is formed in the circumferential wall portion.

Abstract: A gas generator includes, an igniter having an ignition portion and a conductive pin a collar holding the igniter, a metallic cup-shaped case fixed to the collar and having a fragile portion. The collar includes a metallic portion and a resin part enclosing the ignition portion. An outer diameter of the metallic portion is larger than an outer diameter of the resin part. The cup-shaped case has an annular portion bent inward at an opening thereof. The annular bent portion includes a bent corner, an annular tilted surface, and an annular terminal end. The annular tilted surface includes an outer tilted surface facing toward a side of a peripheral surface of the cup-shaped case and an inner annular tilted surface facing the opposite side. The inner annular tilted surface of the annular bent portion presses against the resin portion.

Abstract: The present invention provides a gas generator including: an igniter, a collar for holding the igniter, and a cup-shaped case fixed to the collar and charged inside with gas generating agent, the collar formed by a combination of a metallic portion and a resin portion which is integrated with the metallic portion, the collar being provided with an annular groove formed in an outer peripheral surface thereof, the cup-shaped case and the collar being fixed by fitting a bent portion, which is obtained by bending inward an end portion in an opening side of the cup-shaped case, to the annular groove, an annular space being formed by an inner wall surface of the bent portion and the collar, and being in communication with an inside of the cup-shaped case.

Abstract: The present invention provides a gas generator including: an igniter, a collar for holding the igniter, and a cup-shaped case fixed to the collar and charged inside with gas generating agent, the collar formed by a combination of a metallic portion and a resin portion which is integrated with the metallic portion, the collar being provided with an annular groove formed in an outer peripheral surface thereof, the cup-shaped case and the collar being fixed by fitting a bent portion, which is obtained by bending inward an end portion in an opening side of the cup-shaped case, to the annular groove, an annular space being formed by an inner wall surface of the bent portion and the collar, and being in communication with an inside of the cup-shaped case.