Abstract: Gas generator for air bag having any of the following members: deflecting member formed as tube portion capable of shielding gas discharge port formed on circumferential wall of housing from inside; coolant/filter means supporting member comprising annular portion arranged to face end surface of housing and wall portion contacting with inner periphery of coolant/filter means; coolant/filter means formed in cylindrical shape obtained by laminating wire mesh; housing securely fixing igniter included in ignition means, having opening portion for inserting and fixing igniter or igniter supporting member, wherein the opening portion is provided with connecting portion for fixing inserted igniter or igniter supporting member, and connecting portion is provided in inner side of housing rather than end surface having the opening portion.

Abstract: A gas generator has an inner cylindrical member disposed in a cylindrical housing, an annular first combustion chamber provided radially in the outside of the inner cylindrical member, and, in the combustion chamber, a ratio of its radial average distance to its axial average length is adjusted to be in the range of 0.2 to 2.0. The gas generator has a retainer which changes a flow of a gas ejected from a through-hole in the inner cylindrical member and has a cylindrical portion for collecting fluid and semifluid combustion products included in the gas.

Abstract: A gas generator for an air bag having a simple structure, which is activated to apply as small an impact as possible to a vehicle occupant at the initial stage of activation and, thereafter, can reliably protect the vehicle occupant by rapidly increasing gas pressure, is provided. It is a gas generator for an air bag in which an inner cylindrical member is disposed in the housing to define an ignition means accommodating chamber and a combustion chamber, plural flame-transferring holes for communicating the both chambers with each other are formed on the circumferential surface of the inner cylindrical member, and the plural flame-transferring holes are formed at a distance of less than 30% of the axial length of the inner cylindrical member, from an end of the inner cylindrical member.

Abstract: Gas generator for air bag having any of the following members: deflecting member formed as tube portion capable of shielding gas discharge port formed on circumferential wall of housing from inside; coolant/filter means supporting member comprising annular portion arranged to face end surface of housing and wall portion contacting with inner periphery of coolant/filter means; coolant/filter means formed in cylindrical shape obtained by laminating wire mesh; housing securely fixing igniter included in ignition means, having opening portion for inserting and fixing igniter or igniter supporting member, wherein the opening portion is provided with connecting portion for fixing inserted igniter or igniter supporting member, and connecting portion is provided in inner side of housing rather than end surface having the opening portion.

Abstract: The invention provides a downsized gas generator for a passenger side air bag, which can supply a gas to the bag in at the time at which reaction force is most needed for restraining a vehicle occupant to be protected. The gas generator comprises a housing having a gas discharging port, an igniter to be activated by an impact, and a molded article of a gas generating agent to be ignited and burnt by the igniter for generating a combustion gas, wherein one, two, or three requirements selected from the following (a), (b), and (c) are met: (a) an internal volume of a gas generator is 200 to 400 cm3; (b) a ratio L/D of an axial length L of a gas generator to a diameter D is 0.6 to 1.5; and (c) an amount of gas of a molded article of a gas generating agent is 1.5 to 4.5 mol.

Abstract: Gas generator for air bag having any of the following members: deflecting member formed as tube portion capable of shielding gas discharge port formed on circumferential wall of housing from inside; coolant/filter means supporting member comprising annular portion arranged to face end surface of housing and wall portion contacting with inner periphery of coolant/filter means; coolant/filter means formed in cylindrical shape obtained by laminating wire mesh; housing securely fixing igniter included in ignition means, having opening portion for inserting and fixing igniter or igniter supporting member, wherein the opening portion is provided with connecting portion for fixing inserted igniter or igniter supporting member, and connecting portion is provided in inner side of housing rather than end surface having the opening portion.

Abstract: The invention provided a gas generator for an air bag having any of the following members. A deflecting member is provided to suppress discharge of a combustion product generated by a combustion of gas generating means, and is formed as a tube portion to be capable of shielding a gas discharge port formed at least on a circumferential wall of a housing from the inside of the housing. A coolant/filter means supporting member can position a coolant/filter means, prevent a short pass of an operating gas, and functions as a buffer member between the coolant/filter and the housing, and/or prevent a heat from being transferred to a diffuser shell, and comprises an annular portion arranged to face an end surface of the housing and a wall portion contacting with an inner periphery of the coolant/filter means.

Abstract: Gas generator for air bag to secure safety and reliability in operation while reducing size of container in a simple structure with reduced number of parts. With this gas generator, ignition and combustion performance of the gas generating agent are enhanced. A partition wall member defines the inner space of a housing into at least two chambers in the gas generator, a disk-like dividing member is disposed inside the partition wall member, a peripheral surface of the dividing member is provided with a pawl spreading like a petticoat toward a skirt portion of the partition wall member, and the pawl is fitted into a groove circumferentially formed in an inner peripheral surface of the annular peripheral wall.

Abstract: The invention provides a downsized gas generator for a passenger side air bag which can supply a gas to the bag in time with the timing at which the reaction force is needed most for restraining of a vehicle occupant to be protected.

Abstract: A gas generator for an air bag having a simple structure, which is activated to apply as small an impact as possible to a vehicle occupant at the initial stage of activation and, thereafter, can reliably protect the vehicle occupant by rapidly increasing gas pressure, is provided. It is a gas generator for an air bag in which an inner cylindrical member is disposed in the housing to define an ignition means accommodating chamber and a combustion chamber, plural flame-transferring holes for communicating the both chambers with each other are formed on the circumferential surface of the inner cylindrical member, and the plural flame-transferring holes are formed at a distance of less than 30% of the axial length of the inner cylindrical member, from an end of the inner cylindrical member.

Abstract: A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the diffuser. The gas generator includes a housing which has a diffuser shell with at least one gas discharge port and a closure shell for forming an accommodating space together with the diffuser shell and the gas generating agent, installed in the housing, ignited and burnt by an igniting unit to generate a combustion gas, wherein the gas generator further includes a heat transfer restricting member for making a conduction of heat generated by a combustion of the gas generating agent to the diffuser shell side smaller than that to the closure shell side.

Abstract: The present invention provides a gas generator in which ignition and combustion performance of a gas generating agent and operation performance are enhanced. An inner cylindrical member 4 is disposed in a cylindrical housing 3, an annular first combustion chamber 5a is provided radially in the outside of the inner cylindrical member 4, and, in the combustion chamber 5a, a ratio (D/L) of its radial average distance (D) to its axial average length (L) is adjusted to be in the range of 0.2 to 2.0. The invention provides a gas generator for an air bag capable of reducing a size of the gas generator and easily and reliably adjusting a capacity of a combustion chamber which accommodates the gas generating agent, and also provides a retainer for such a gas generator.

Abstract: A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the diffuser. The gas generator includes a housing which has a diffuser shell with at least one gas discharge port and a closure shell for forming an accommodating space together with the diffuser shell and the gas generating agent, installed in the housing, ignited and burnt by an igniting unit to generate a combustion gas, wherein the gas generator further includes a heat transfer restricting member for making a conduction of heat generated by a combustion of the gas generating agent to the diffuser shell side smaller than that to the closure shell side.

Abstract: The invention provided a gas generator for an air bag having any of the following members. A deflecting member is provided to suppress discharge of a combustion product generated by a combustion of gas generating means, and is formed as a tube portion to be capable of shielding a gas discharge port formed at least on a circumferential wall of a housing from the inside of the housing. A coolant/filter means supporting member can position a coolant/filter means, prevent a short pass of an operating gas, and functions as a buffer member between the coolant/filter and the housing, and/or prevent a heat from being transferred to a diffuser shell, and comprises an annular portion arranged to face an end surface of the housing and a wall portion contacting with an inner periphery of the coolant/filter means.

Abstract: The present invention provide a gas generator for an air bag in which safety and reliability in operation are secured while the total size of a container is restricted a simple structure with the reduced number of parts is realized, and provides a gas generator in which ignition and combustion performance of the gas generating agent are enhanced. According to the gas generator for an air bag, a partition wall member is disposed to define the inner space of a housing into at least two chambers, a disk-like dividing member is disposed inside the partition wall member, a peripheral surface of the dividing member is provided with a pawl spreading like a petticoat toward a skirt portion of the partition wall member, and the pawl is fitted into a groove circumferentially formed in an inner peripheral surface of the annular peripheral wall.

Abstract: A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the diffuser. The gas generator includes a housing which has a diffuser shell with at least one gas discharge port and a closure shell for forming an accommodating space together with the diffuser shell and the gas generating agent, installed in the housing, ignited and burnt by an igniting unit to generate a combustion gas, wherein the gas generator further includes a heat transfer restricting member for making a conduction of heat generated by a combustion of the gas generating agent to the diffuser shell side smaller than that to the closure shell side.

Abstract: A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the diffuser. The gas generator includes a housing which has a diffuser shell with at least one gas discharge port and a closure shell for forming an accommodating space together with the diffuser shell and the gas generating agent, installed in the housing, ignited and burnt by an igniting unit to generate a combustion gas, wherein the gas generator further includes a heat transfer restricting member for making a conduction of heat generated by a combustion of the gas generating agent to the diffuser shell side smaller than that to the closure shell side.

Abstract: A gas generator for an air bag, in which conduction of heat generated by combustion of a gas generating agent is restricted to effectively reduce or inhibit a temperature increase of a diffuser side on an outer shell container, is provided and thus, reduces the maximum surface temperature of the diffuser. The gas generator includes a housing which has a diffuser shell with at least one gas discharge port and a closure shell for forming an accommodating space together with the diffuser shell and the gas generating agent, installed in the housing, ignited and burnt by an igniting unit to generate a combustion gas, wherein the gas generator further includes a heat transfer restricting member for making a conduction of heat generated by a combustion of the gas generating agent to the diffuser shell side smaller than that to the closure shell side.