Gas generating apparatus for inflating an air bag.

摘要

This invention concerns a gas generating apparatus for inflating an air bag whereby any shortfall in the quantity of gas required for inflating the air bag can be overcome by replenishing the air bag with air. If the gas generating apparatus is reduced in size and weight with a corresponding reduction in the quantity of gas generating agent used therein, the air bag is not inflated to a sufficient extent and its function as a safety apparatus in time of collision is thereby compromised. This problem is solved by an open joint portion connected to said air bag; a combustion chamber 9 formed at the center inside said housing body 1, wherein a high-pressure gas is generated upon combustion of a gas generating agent; a partition 12 which forms a mixing chamber 15 in a ring-like configuration by being concentrically disposed such as to be spaced apart from the opening of said housing body 1 by a desired interval, whereby said high-pressure gas from said combustion chamber 9 is introduced into said mixing chamber 15; a nozzle 16 in a ring-like configuration which is provided at said high-pressure gas introducing portion, whereby said high-pressure gas is ejected toward said opening of said mixing chamber 15 formed by said partition 12; and an air intake port 5 formed along said nozzle 16 on sail housing body 1.