Gas generator and method for producing gas generator

A method for producing a gas generator,

• the gas generator including:
• an igniter,
• a gas generating agent that generates a combustion gas by being combusted in response to actuation of the igniter,
• a housing accommodating the igniter and the gas generating agent inside the housing,
• a plurality of gas discharge ports penetrating through the housing from an inside to an outside of the housing, and
• a closing structure to close the plurality of gas discharge ports, the method comprising:
• forming the plurality of gas discharge ports including at least one first gas discharge port and at least one second gas discharge port in the housing in such a manner that rupturing pressures of the closing structure at the at least one first gas discharge port and the at least one second gas discharge port are different from each other;
• and
• attaching the closing structure to an inner surface of the housing in such a manner that the closing structure covers an opening of each of the plurality of gas discharge ports on an inner surface side of the housing, wherein
• in the forming of the plurality of gas discharge ports in the housing, a minimum flow path cross-sectional area of a gas flow path formed by the at least one first gas discharge port and a minimum flow path cross-sectional area of a gas flow path formed by the at least one second gas discharge port are equivalent to each other, and the at least one first gas discharge port and the at least one second gas discharge port are different from each other in at least one of a shape or a peripheral length of the opening on the inner surface side of the housing.

A gas generator, comprising:

• a housing accommodating a igniter and a gas generating agent inside thereof;
• a first gas discharge port penetrating through the housing from an inside to an outside of the housing, and being closed, from the inside of the housing, by a first closing structure provided with a first rupturable pressure, the first gas discharge port including a first minimum flow path cross-sectional area;
• a second gas discharge port penetrating through the housing from the inside to the outside of the housing, and being closed, from the inside of the housing, by a second closing structure provided with a second rupturable pressure different from the first rupturable pressure, the second gas discharge port including a second minimum flow path cross-sectional area equivalent to the first minimum flow path cross-sectional area,
• the first gas discharge port and the second gas discharge port being different from each other in at least one of a shape or a peripheral length of an opening on a side of an inner surface of the housing.