Daicel Chemical Industries, Ltd.

Daicel Corporation

Mikio Yabuta

Nobuyuki Katsuda

Koji Yamamoto

Masayuki Ueda

Masayuki Yamazaki

Tomoharu Kobayashi

Yasunori Iwai

Masato Hirooka

Takefumi Watase

Naoki Matsuda

Yoshihiro Nakashima

Nobuyuki Ohji

Akihisa Ogawa

Kenji Numoto

Jianzhou Wu

Katsuhito Miyaji

Takashi Okuyama

Atsushi Hatomoto

Takao Kuroda

Yuki Fukui

Toshiro Iwakiri

Nobuhiko Ozaki

The gas generator includes an igniter, a container including a container body and a lid formed relative to the container body and configured to contain a transfer charge and a housing configured to contain the igniter and the container, a predetermined region in the housing adjacent to the lid of the container being filled with a gas generating agent to be burned by a combustion product of the transfer charge burned by actuation of the igniter. The lid includes a frangible section configured to be capable of being ruptured by pressure applied by a combustion product generated by combustion of the transfer charge and a strong connection section configured to be capable of maintaining a connected state with the container body even in a case that pressure is applied by the combustion product.

Gas generator and container

An ejector for ejecting a combustion product including, an igniter including an ignition charge and an ignition portion, a pyrotechnic agent, and a cup made of metal, the cup including a bottom surface and a peripheral wall, the peripheral wall being contiguous with a peripheral edge of the bottom surface and disposed to surround the ignition portion, the cup further including an accommodating space accommodating therein the pyrotechnic agent, the bottom surface of the cup including a through hole being defined by a plurality of through-hole peripheral edges, and the adjacent through-hole peripheral edges being connected together at a predetermined connection point, and the through hole including a narrow part, in which a width of the through hole defined by each of parts of the two through-hole peripheral edges of the plurality of through-hole peripheral edges decreases gradually with an increasing distance from a center of the bottom surface toward the peripheral edge of the bottom surface, and the narrow part being located closer to the peripheral edge of the bottom surface than a non-narrow part, which is defined by each of other parts of the two through-hole peripheral edges, is located.

Ejector and gas generator

A gas generator including an igniter, a combustion chamber, and a restriction part, the igniter including an accommodating chamber accommodating an explosive therein, an ignition portion provided in the accommodating chamber, and a separating part including a pressure receiving surface, the separating part being configured to be separable from the igniter and movable in a predetermined direction, the combustion chamber being configured to burn a gas generating agent filled outside the accommodating chamber, by the combustion of the explosive, the restriction part provided in a predetermined position in the predetermined direction from the igniter and restricting a movement of the separating part, and the separating part including a guide that directs the combustion product of the explosive by the pressure receiving surface toward the igniter, in a state where the movement of the separating part in the predetermined direction is restricted by the restriction part.

Gas generator

A gas generator including, an igniter, a housing made of metal and including a gas discharge port and a combustion chamber for burning a solid gas generating agent, the solid gas generating agent being filled at a position where the solid gas generating agent can be burned by actuation of the igniter, and the housing being configured to accommodate the igniter and an isolating member including an isolating wall interposed, inside the housing, between the gas generating agent disposed in the combustion chamber and a bottom surface and a side surface of the combustion chamber, the isolating wall being made from a predetermined resin material and being in contact with the gas generating agent to apply a predetermined holding force to the gas generating agent.

Gas generator and assembly method for dual-type gas generator

Provided is a gas generator including a housing including a top plate, a bottom plate, and a peripheral wall, the bottom plate being axially opposite the top plate, and the peripheral wall including a gas discharge port and being located between the top plate and the bottom plate. In the gas generator, an internal space of the housing is separated into a first combustion chamber and a second combustion chamber by a partition wall axially and radially partitioning the internal space of the housing, the first combustion chamber being formed to accommodate a first gas generating agent and being on the top plate side, and the second combustion chamber being formed to accommodate a second gas generating agent and being on the bottom plate side. A first igniter and a second igniter are disposed at the bottom plate, the first igniter being configured to burn the first gas generating agent, and the second igniter being configured to burn the second gas generating agent. The partition wall includes a cylindrical portion and an annular portion, the cylindrical portion being formed to surround the first igniter and include a communication hole for making the first combustion chamber and the second combustion chamber to communicate with each other, and the annular portion being formed extend radially outward from a second opening on the top plate side of the cylindrical portion. A first opening of the cylindrical portion axially opposite the second opening is in contact with the first igniter, and an outer periphery of the annular portion is in contact with the peripheral wall of the housing, and, thereby, the first combustion chamber and the second combustion chamber are separated from each other.

The present invention provides a gas generator including:

The present invention provides a gas generator, including

A gas generator includes a metallic housing, an ignition device including an igniter assembly, and gas generating agent, the igniter assembly including an igniter main body fixed to a metallic cylindrical fixing member with a resin and a connector-connecting portion for fitting a connector, at least part of the metallic cylindrical fixing member being electro-conductive to the housing, and including an exposed portion exposed to an inner surface of the connector-connecting portion, the exposed portion of the metallic cylindrical fixing member serving as a ground terminal, when the connector is connected to the connector-connecting portion, the ground terminal being in contact with an earth terminal of the connector, a grounding lead wire of the connector being grounded to a ground circuit located outside the gas generator.

An igniter fixing structure includes a plurality of igniter bodies having an ignition portion and an electroconductive pin, each of the igniter bodies being fixed, by a resin, to a peripheral edge of a port formed in a plate-like portion serving as a fixing object, the number of the port being the same as that of the plurality of the igniter bodies, and a single retainer as a support member for the plurality of igniter bodies. The retainer has a plurality of support portions each having a hole for passing the electroconductive pin therethrough and a connection plate portion that connects the plurality of support portions, at least the support portions are embedded in the resin in a state in which the electroconductive pin passes through the hole, and at least the connection plate portion is disposed to abut against the plate-like portion.

Igniter fixing structure

The present invention provides a gas generator for a restraining device of a vehicle, including: a housing being made of a resin, forming an outer shell container, having a plurality of gas discharge ports, an ignition device disposed inside the housing, a gas generating agent that is ignited and burned by activation of the ignition device, each of the gas discharge ports being formed in combination with each of a plurality of through holes of an annular plate member that is embedded in a circumferential wall surface of the housing and formed of a material selected from the group consisting of metals, ceramics, and carbon fiber, and the annular plate member being formed of an annular base plate including the plurality of through holes formed therein.

An apparatus including and igniter comprises:

Apparatus including igniter

The invention relates to an inflator including:

Inflator

An inflator for a restraining system for a vehicle includes:

Inflator for restraining system for vehicle

Actuator

A gas generator for an air bag includes; a housing having a gas discharge port, a first combustion chamber and a second combustion chamber, provided inside the housing and charged with a gas generating agent, a first ignition device and a second ignition device provided in the two combustion chambers, respectively, the second ignition device provided with an electric igniter, a piston, an enhancer agent, a detonator provided in the enhancer agent, opposite to the distal end of the piston, and a tether connected to the rear end portion of the piston, the tether being tied around an air bag when accommodated into an air bag module, the tether controlling an inflation direction of the air bag by fastening the inflating air bag when the first ignition device is activated, the tether being configured to be released from the piston when the second ignition device is activated.

Growing community of inventors

Tatsuno, Japan

Mikio Yabuta