Gas generator
A gas generator includes, an ignition device including an igniter, an igniter holding portion having a tubular shape and being configured to hold the igniter in a state of surrounding the igniter, and a fixing portion made of resin and being configured to fix the igniter to the igniter holding portion, a case having a bottomed tubular shape and being configured to accommodate a gas generating agent which combusts by actuation of the ignition device, the case being made of resin and including a side wall portion with a base end side being connected to the fixing portion, and a closing end portion configured to close a tip end side, and a reinforcing member covering at least the closing end portion, the reinforcing member partially including an opening portion, and having a greater breaking strength than a breaking strength of the case.
1 . A gas generator, comprising:
an ignition device including an igniter, an igniter holding portion having a tubular shape and being configured to hold the igniter in a state of surrounding the igniter, and a fixing portion made of resin and being configured to fix the igniter to the igniter holding portion;
a case having a bottomed tubular shape and being configured to accommodate a gas generating agent which combusts by actuation of the ignition device, the case being made of resin and including a first side wall with a base end side being connected to the fixing portion, and a closing end configured to close a tip end side, the case having a step formed in an outer peripheral surface of the first side wall; and
a reinforcing structure including a bottom surface and a second side wall and covering the case such that at least a part of the second side wall is accommodated in the step, the reinforcing structure including an opening, and having a greater breaking strength than a breaking strength of the case.
2 . The gas generator according to claim 1 , wherein
the reinforcing structure includes the opening formed in a center of a bottom surface.
3 . The gas generator according to claim 1 , wherein
the case and the reinforcing structure are flush with each other at least at a part of a connection portion between the first side wall and the second side wall.
4 . The gas generator according to claim 2 , wherein
an inside of the bottom surface of the reinforcing structure and an outside of the closing end of the case are in contact with each other.
5 . The gas generator according to claim 1 , wherein
the reinforcing structure is made of metal.
6 . The gas generator according to claim 1 , wherein
the case has a columnar shape and is fitted with a tubular portion that is an attachment target of the gas generator.
7 . A gas generator, comprising:
an ignition device including an igniter, and an igniter holding portion having a tubular shape and being configured to hold the igniter in a state of surrounding the igniter;
a case including a first side wall having a tubular shape extending vertically and a closing end closing an upper end thereof, and accommodating therein a gas generating agent, the case having a step formed in an outer peripheral surface of the first side wall; and
a cover provided with a closing end and a second side wall and being attached to the case such that at least a part of the second side wall is accommodated in the step, a center of the closing end of the cover being provided with an opening having a predetermined shape, and the cover having a greater breaking strength than a breaking strength of the case.
8 . The gas generator according to claim 7 , wherein
a material of the case is a resin.
9 . The gas generator according to claim 7 , wherein
an area of the opening is set to be less than or equal to half an area of the closing end of the cover.
10 . The gas generator according to claim 7 , wherein
the case and the cover are flush with each other at least at a part of a connection portion between the first side wall and the second side wall.
11 . The gas generator according to claim 7 , wherein
an inside of the closing end of the cover and an outside of the closing end of the case are in contact with each other.
12 . The gas generator according to claim 7 , wherein
the cover is made of metal.
13 . The gas generator according to claim 7 , wherein
the case has a columnar shape and is fitted with a tubular portion that is an attachment target of the gas generator.