Support structure of closing member for gas generator and gas generator using same

A support structure of a closing member for a gas generator, being arranged in the gas generator which includes a cylindrical housing provided with a gas discharge port, the cylindrical housing accommodating therein an ignition device and having an inflating gas source chamber filled with an inflating gas source,

• the support structure comprising:
• a combination of the closing member for closing a gas discharge path and a support member of the closing member to be arranged inside the cylindrical housing,
• the support member including a base, a convex first support part which extends in one direction from a center portion of the base, and an annular second support part which extends in a same direction as the first support part from a circumference of the base, and further including a gas passage hole in at least one of the base, the convex first support part and the annular second support part, a distal end surface of the convex first support part opposing the closing member being a flat surface and in contact with at least a center of the closing member,
• the closing member having a plate shape with a first surface and a second surface,
• the closing member being supported from one surface by a distal end surface of the convex first support part which abuts against a center portion of the first surface or the second surface, and the annular second support part of the support member which abuts against an outer circumferential edge portion on the side of the supported surface, and the closing member having an annular surface not abutted by the convex first support part and the annular second support part,
• the closing member being opened as the annular surface of the closing member is ruptured.