Gas generator for an air bag

A gas generator, in particular a generator for an air bag of a vehicle comprising:

• a housing which is open at two opposing end faces and which has an outer wall with at least one gas orifice for discharging of cleaned combustion gases;
• two cover elements for closing the end faces of the housing;
• a combustion chamber for receiving and burning gas-generating material ignitable by means of an ignition unit located therein, said chamber being arranged in the housing and having at least one outlet orifice in a wall of the chamber for discharging of combustion gases;
• and
• at least one filter element arranged in the housing, each filter element having several wire mesh mats for cleaning the combustion gases flowing therethrough,
• characterized in that
• the housing is formed as an extruded hollow profile of aluminium or an aluminium alloy manufactured in an extrusion process and
• the extruded hollow profile has integral holding sections for each filter element opposing one another, between which holding sections a filter element can be inserted by means of one of the open end faces of the extruded hollow profile, with the wire mesh mats extending in a straight line between the holding sections and the holding sections are formed as U-shaped grooves integral with the outer wall of the housing, the grooves embracing a filter element laterally.

A gas generator, in particular a generator for an air bag of a vehicle comprising:

• a housing which is open at two opposing end faces and which has an outer wall with at least one gas orifice for discharging of cleaned combustion gases;
• two cover elements for closing the end faces of the housing;
• a combustion chamber for receiving and burning gas-generating material ignitable by means of an ignition unit located therein, said chamber being arranged in the housing and having at least one outlet orifice in a wall of the chamber for discharging of combustion gases;
• and
• at least one filter element arranged in the housing, each filter element having several wire mesh mats for cleaning the combustion gases flowing therethrough, characterized in that
• the housing is formed as a longitudinally extruded hollow profile of a aluminium or an aluminium alloy manufactured in an extrusion process, the extruded hollow profile has integral holding sections for each filter element opposing one another and extending a length of the housing, between which holding sections a filter element can be inserted by means of one of the open end faces of the extruded hollow profile, with the wire mesh mats extending the length of the housing in a straight line between the holding sections, and an inner surface of the outer wall of the housing in the area of a discharge chamber attached to the outlet orifice of the combustion chamber has several receiving pockets open towards an outlet orifice for particles and/or condensed drops of liquid transported along by the combustion-gas flow.

A gas generator, in particular a generator for an air bag of a vehicle comprising:

• a housing which is open at two opposing end faces and which has an outer wall with at least one gas orifice for discharging of cleaned combustion gases;
• two cover elements for closing the end faces of the housing;
• a combustion chamber for receiving and burning gas-generating material ignitable by means of an ignition unit located therein, said chamber being arranged in the housing and having at least one outlet orifice in a wall of the chamber for discharging of combustion gases;
• and
• at least one filter element arranged in the housing, each filter element having several wire mesh mats for cleaning the combustion gases flowing therethrough, characterized in that
• the housing is formed as a longitudinally extruded hollow profile of a aluminium or an aluminium alloy manufactured in an extrusion process, the extruded hollow profile has integral holding sections for each filter element opposing one another and extending a length of the housing, between which holding sections a filter element can be inserted by means of one of the open end faces of the extruded hollow profile, with the wire mesh mats extending the length of the housing in a straight line between the holding sections, and the combustion chamber is an integral component of the extruded hollow profile of the housing, with the outlet orifice of the combustion chamber being formed as a slot extending over the entire length of the extruded profile.

A gas generator, in particular a generator for an air bag of a vehicle comprising:

• a housing which is open at two opposing end faces and which has an outer wall with at least one gas orifice for discharging of cleaned combustion gases;
• two cover elements for closing the end faces of the housing;
• a combustion chamber for receiving and burning gas-generating material ignitable by means of an ignition unit located therein, said chamber being arranged in the housing and having at least one outlet orifice in a wall of the chamber for discharging of combustion gases;
• and at least one filter element arranged in the housing, each filter element having several wire mesh mats for cleaning the combustion gases flowing therethrough,
• characterized in that
• the housing is formed as an extruded hollow profile of aluminium or an aluminium alloy manufactured in an extrusion process, and
• the extruded hollow profile has integral holding sections for each filter element opposing one another, between which holding sections a filter element can be inserted by means of one of the open end faces of the extruded hollow profile, with the wire mesh mats extending in a straight line between the holding sections and at the outer surface of an outer wall of the housing in the area of the combustion chamber two projecting holding projections integral with the extruded profile, having symmetrical recesses facing each other, are provided and in that by means of one of the end faces of the extruded profile a support element for the ignition unit can be inserted into the recesses, the support element extending between them, with the ignition unit in the installed state extending through two openings, which are in alignment with one another, in the outer wall of the housing and the combustion chamber or, with integral construction of housing and combustion chamber, through an opening in the outer wall of the housing into the combustion chamber.

A gas generator, in particular a generator for an air bag of a vehicle comprising:

• a housing which is open at two opposing end faces and which has an outer wall with at least one gas orifice for discharging of cleaned combustion gases;
• two cover elements for closing the end faces of the housing;
• a combustion chamber for receiving and burning gas-generating material ignitable by means of an ignition unit located therein, said chamber being arranged in the housing and having at least one outlet orifice in a wall of the chamber for discharging of combustion gases;
• and at least one filter element arranged in the housing, each filter element having several wire mesh mats for cleaning the combustion gases flowing therethrough,
• characterized in that
• the housing is formed as an extruded hollow profile of aluminium or an aluminium alloy manufactured in an extrusion process, and the extruded hollow profile has integral holding sections for each filter element opposing one another, between which holding sections a filter element can be inserted by means of one of the open end faces of the extruded hollow profile, with the wire mesh mats extending in a straight line between the holding sections and several gas orifices are arranged in a row in a longitudinal direction of the extruded profile of the housing and in that at both longitudinal sides of the row of gas orifices there are arranged outwardly projecting curved edge sections integral with the extruded profile, the edge sections forming a nozzle operating after the gas orifices.

A housing for a gas generator, especially for an air bag gas generator which comprises:

• a housing which is open at two opposite ends, said housing body having a housing wall with at least one gas outlet opening therein, and
• a combustion chamber which is located in the housing body to receive and burn gas-generating material and which has at least one outlet opening, characterized in that
• the housing body is made in the form of a longitudinally extruded hollow profile produced by an extrusion-molding process from aluminum or an aluminum alloy, and the extruded hollow profile has integrated holding or retaining sections opposite one another adapted to receive at least one filter element and between which the at least one filter element is insertable through one of the open ends of the extruded hollow profile;
• said holding or retaining sections extending an entire length of the profile and an inner surface of an outside wall of the housing body in an area of the through chamber abutting an outlet opening of combustion chamber has a plurality of receiving pockets open toward the outlet opening for particles and/or condensed liquid drops entrained by the combustion gas flow.

A housing for a gas generator, especially for an air bag gas generator which comprises:

• a housing which is open at two opposite ends, said housing body having a housing wall with at least one gas outlet opening therein, and
• a combustion chamber which is located in the housing body to receive and burn gas-generating material and which has at least one outlet opening, characterized in that the housing body is made in the form of a longitudinally extruded hollow profile produced by an extrusion-molding process from aluminum or an aluminum alloy, and the extruded hollow profile has integrated holding or retaining sections opposite one another adapted to receive at least one filter element in between which the at least one filter element is insertable through one of the open ends of the extruded profile;
• said holding or retaining sections extending an entire length of the profile;
• the combustion chamber being an integral component of the extruded hollow profile, with the at least one opening of combustion chamber being in the form of a slot extending over an entire length of the extruded hollow profile.

A housing for a gas generator, especially for an air bag gas generator which comprises:

• a housing which is open at two opposite ends, said housing body having a housing wall with at least one gas outlet opening therein, and
• a combustion chamber which is located in the housing body to receive and burn gas-generating material and which has at least one outlet opening, characterized in that the housing body is made in the form of a longitudinally extruded hollow profile produced by an extrusion-molding process from aluminum or an aluminum alloy, two projecting retaining projections are integrated into the extruded hollow profile and symmetrical recesses facing one another are provided on an outer surface of a housing outside wall in the vicinity of the combustion chamber, and a supporting element for an ignition element is inserted through one of the ends of the extruded hollow profile into the recesses, said supporting element extending between said recesses, with the ignition unit in the installed state extending through two mutually flush openings in the housing outside wall and the combustion chamber or, with an integral design of the housing body and combustion chamber, through an opening in the housing outside wall into the combustion chamber, and the extruded hollow profile has integrated holding or retaining sections opposite one another adapted to receive at least one filter element and between which the at least one filter element is insertable through one of the open ends of the extruded hollow profile;
• said holding or retaining sections extending an entire length of the profile.