GAS GENERATOR
First Claim
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1. A gas generator comprising:
- a housing having an elongated and circular cylindrical shape closed at each end in an axial direction, and including a working gas generation chamber in which a gas generating agent is burned to produce working gas, and a filter chamber housing a filter through which the working gas produced in said working gas generation chamber passes;
ignition means disposed at one end in the axial direction of said housing for generating a flame for burning said gas generating agent;
a partition member located within said housing and partitioning a space within said housing in the axial direction into said working gas generation chamber and said filter chamber; and
a dividing member located within said working gas generation chamber and dividing said working gas generation chamber,said filter chamber being located closer to an other end in the axial direction of said housing than said working gas generation chamber,a portion of a circumferential wall portion of said housing defining said filter chamber being provided with a plurality of gas discharge openings for discharging the working gas having passed through said filter to outside,said dividing member being made of a cylindrical member with a bottom having a hollow portion therein and disposed coaxially with said housing, and including a cylindrical portion extending in the axial direction of said housing from an end of said partition member on a side of said working gas generation chamber, and a bottom portion closing an end of said cylindrical portion on a side of said ignition means,said bottom portion of said dividing member being located closer to said partition member than an end of said working gas generation chamber on the side of said ignition means,said gas generating agent being stored in a portion of said working gas generation chamber excluding said hollow portion of said dividing member,said cylindrical portion of said dividing member being provided with a plurality of first communication holes providing communication between a space in said working gas generation chamber storing said gas generating agent and said hollow portion of said dividing member,said partition member having a center portion provided with a second communication hole for providing communication between said hollow portion of said dividing member and said filter chamber, andsaid bottom portion of said dividing member having a tapered shape to provide an outer shape gradually reduced in size in accordance with a decrease in a distance from said ignition means.
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Abstract
A cylinder-shaped gas generator includes an elongated and circular cylindrical housing, a working gas generation chamber and a filter chamber provided within the housing, and an igniter. The working gas generation chamber mainly contains a dividing member and a granular gas generating agent. The dividing member has a circular cylindrical portion, a bottom portion and a hollow portion. The granular gas generating agent is stored in the portion of the working gas generation chamber excluding the hollow portion. The bottom portion of the dividing member is configured to have a tapered shape such that its outer shape is reduced in size in accordance with a decrease in the distance from the igniter.
19 Citations
12 Claims
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1. A gas generator comprising:
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a housing having an elongated and circular cylindrical shape closed at each end in an axial direction, and including a working gas generation chamber in which a gas generating agent is burned to produce working gas, and a filter chamber housing a filter through which the working gas produced in said working gas generation chamber passes; ignition means disposed at one end in the axial direction of said housing for generating a flame for burning said gas generating agent; a partition member located within said housing and partitioning a space within said housing in the axial direction into said working gas generation chamber and said filter chamber; and a dividing member located within said working gas generation chamber and dividing said working gas generation chamber, said filter chamber being located closer to an other end in the axial direction of said housing than said working gas generation chamber, a portion of a circumferential wall portion of said housing defining said filter chamber being provided with a plurality of gas discharge openings for discharging the working gas having passed through said filter to outside, said dividing member being made of a cylindrical member with a bottom having a hollow portion therein and disposed coaxially with said housing, and including a cylindrical portion extending in the axial direction of said housing from an end of said partition member on a side of said working gas generation chamber, and a bottom portion closing an end of said cylindrical portion on a side of said ignition means, said bottom portion of said dividing member being located closer to said partition member than an end of said working gas generation chamber on the side of said ignition means, said gas generating agent being stored in a portion of said working gas generation chamber excluding said hollow portion of said dividing member, said cylindrical portion of said dividing member being provided with a plurality of first communication holes providing communication between a space in said working gas generation chamber storing said gas generating agent and said hollow portion of said dividing member, said partition member having a center portion provided with a second communication hole for providing communication between said hollow portion of said dividing member and said filter chamber, and said bottom portion of said dividing member having a tapered shape to provide an outer shape gradually reduced in size in accordance with a decrease in a distance from said ignition means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification