A gas generator includes, a tubular housing, an ignition device attached to one end and a diffuser having a gas discharge port, attached to the other end of the housing, a tubular member, having first and second ends, disposed inside the housing such that the first and second ends are oriented towar
A gas generator includes, a tubular housing, an ignition device attached to one end and a diffuser having a gas discharge port, attached to the other end of the housing, a tubular member, having first and second ends, disposed inside the housing such that the first and second ends are oriented towards the ignition device side and the diffuser side, respectively, and forming a tubular gap leading to the gas discharge port, a combustion chamber provided inside the tubular member, first and second gas passage holes formed on the first and second end sides, respectively, and an opening portion formed between the first and second gas passage holes, such that the gas passage holes and the opening portion communicate the combustion chamber with the tubular gap, and a projecting portion projecting from the opening portion into at least one of the combustion chamber and the tubular gap.
대표청구항▼
1. A gas generator comprising: a tubular housing in which an ignition device is attached at one end and a diffuser portion having a gas discharge port is provided at the other end;a tubular member having a combustion chamber for accommodating, therein, a gas generating agent that generates a combust
1. A gas generator comprising: a tubular housing in which an ignition device is attached at one end and a diffuser portion having a gas discharge port is provided at the other end;a tubular member having a combustion chamber for accommodating, therein, a gas generating agent that generates a combustion gas, the tubular member having a first end portion and a second end portion, and disposed and fixed inside the tubular housing such that the first end portion is oriented towards a side of the ignition device and the second end portion is oriented towards a side of the diffuser portion, and defining a tubular gap between the tubular member and the tubular housing leading to the gas discharge port, the tubular member including, a first gas passage hole formed in a peripheral wall portion of a side of the first end portion of the tubular member and communicating the combustion chamber and the tubular gap,a second gas passage hole formed in the peripheral wall portion on a side of the second end portion of the tubular member and communicating the combustion chamber and the tubular gap, andan opening portion formed between the first gas passage hole and the second gas passage hole, and communicating the combustion chamber and the tubular gap;a projecting portion provided on the peripheral wall portion corresponding to the opening portion of the tubular member such that the projecting portion projects into at least one of the combustion chamber and the tubular gap. 2. The gas generator according to claim 1, wherein the projecting portion includes a guiding plate formed with a part of a peripheral wall portion of the tubular member projected to the combustion chamber side, and the guiding plate acts such that gas having flowed into the combustion chamber through the opening portion flows to the diffuser portion side. 3. The gas generator according to claim 1, wherein the projecting portion includes a guiding plate formed with a part of a peripheral wall portion of the tubular member projected to the tubular gap side, and the guiding plate acts such that gas having flowed through the tubular gap is introduced into the combustion chamber through the opening portion and caused to flow to the diffuser portion side. 4. The gas generator according to claim 3, wherein the tubular member is formed by combining two semicircular tube-shaped members having a peripheral wall portion. 5. The gas generator according to claim 1, wherein the projecting portion includes, a guiding plate,two projecting portions provided on both width sides of the guiding plate, andtwo introducing ports on both sides on a longitudinal direction of the guiding plate. 6. The gas generator according to claim 5, wherein the guiding plate is inclined such that one of the two introducing ports provided in the side of the second end portion is larger than the other of the two introducing ports provided in the side of the first end portion. 7. The gas generator according to claim 1, wherein the projecting portion includes a guiding plate and the guiding plate is formed such that a part thereof in the side of the first end portion is integrated with the tubular member, and a part thereof in the side of the second end portion is pushed down towards the combustion chamber. 8. The gas generator according to claim 1, wherein the projecting portion includes a guiding plate and the guiding plate is formed such that a part thereof in the side of the second end portion is integrated with the tubular member, and a part thereof in the side of the first end portion is pushed in towards the tubular gap. 9. A gas generator comprising: a tubular housing in which an ignition device is provided at one end and a diffuser portion having a gas discharge port is attached at the other end;a tubular member, which has a first end portion and a second end portion, disposed and fixed inside the tubular housing such that the first end portion is oriented towards a side of the ignition device and the second end portion is oriented towards a side of the diffuser portion, and defining a tubular gap between the tubular member and the tubular housing leading to the gas discharge port, the tubular member including a first gas passage hole and a second gas passage hole formed on a side of the first end portion and a side of the second end portion, respectively, and an opening portion formed between the first gas passage hole and the second gas passage hole, the first gas passage hole, the second gas passage hole, and the opening portion communicating the combustion chamber with the tubular gap;a combustion chamber provided inside of the tubular member for accommodating a gas generating agent that generates a combustion gas; anda projecting portion attached to the tubular member and extending over the opening portion and projecting into at least one of the combustion chamber and the tubular gap to deflect the combustion gas flowing through the opening portion.
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이 특허에 인용된 특허 (2)
Ishida, Takeshi; Kishino, Yoshiyuki, Gas generator.
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