GAS GENERATOR

摘要

A cylinder type gas generator (1A) comprises: a housing including a long closed-bottomed cylindrical first housing member (10); an igniter (30); a partition plate (40); a dividing member (50); igniting powder (61); a gas generating agent (62); and a filter (70). The dividing member (50) consists of: a closed-bottomed cylindrical member disposed in an operation gas generating chamber and has a cylindrical section (52); a bottom section (53), a first through-hole (54); and a hollow section (55). The gas generating agent (62) is contained within the operation gas generating chamber in the portion thereof outside the hollow section (55). If the outer diameter of the first housing member (10) is R1, the diameter of the operation gas generating chamber is R2, the distance from a first communication hole from the edge thereof which is on the bottom section (53) side, said first communication hole being one of first communication holes (54) which is located closest to the bottom section (53), to the bottom section (53) is L1, and the distance from the bottom section (53) to the operation gas generating chamber to the end thereof which is on the igniter (30) side is L2, the gas generator satisfies the conditions of 15 mm = R1 = 22 mm, L1 = 10 mm, and 0.026 = L2/R2 = 0.71.