Importance

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Abstract

The present invention provides a gas generator including

an ignition device provided at one end of a cylindrical housing and a diffuser portion having a gas discharge port and provided at the other end of the housing,molded articles of a gas generating agent and a molded article of a pressure increasing agent charged into a combustion chamber inside the cylindrical housing,the molded articles of a gas generating agent charged into a charging space remained except for a charging portion for the molded article of a pressure increasing agent inside the combustion chamber such that the molded articles of a gas generating agent are in contact with the ignition device and a total volume of the molded articles of a gas generating agent is less than a volume of the charging space,the molded article of a pressure increasing agent charged in contact with the molded articles of a gas generating agent at a position axially distant from the ignition device,a combustion temperature of the molded articles of a gas generating agent being 1000° C. to 1700° C., and a combustion temperature of the molded article of a pressure increasing agent being higher than that of the molded articles of a gas generating agent,a charged mass of the molded articles of a gas generating agent being larger than a charged mass of the molded article of a pressure increasing agent, andthe molded article of a pressure increasing agent being to burn out before burnout of the molded articles of a gas generating agent at the time of actuation.

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First Claim