A gas generator includes two reserves of reactive gases, an ignition device capable of being triggered in order to open lids of the reserves and initiating combustion of the reactive gases, and an orifice for letting out combustion gas towards the outside. The gas reserve, a device for diffusing the
A gas generator includes two reserves of reactive gases, an ignition device capable of being triggered in order to open lids of the reserves and initiating combustion of the reactive gases, and an orifice for letting out combustion gas towards the outside. The gas reserve, a device for diffusing the combustion gas towards the outside and the second gas reserve are successively positioned along a longitudinal direction. A guiding wall is provided in the reserve for guiding the pressure wave generated by the device up to the lid in order to open this first lid. The diffusing device includes a conduit for guiding the pressure wave from the first lid to the second lid so as to open the latter, and which communicates with the orifice.
대표청구항▼
1. A gas generator with reactive gases, the gas generator comprising: a first reserve of pressurized gas delimited by a first wall containing a first reactive gas;a second reserve of pressurized gas containing a second reactive gas for reacting with the first reactive gas to create a combustion gas;
1. A gas generator with reactive gases, the gas generator comprising: a first reserve of pressurized gas delimited by a first wall containing a first reactive gas;a second reserve of pressurized gas containing a second reactive gas for reacting with the first reactive gas to create a combustion gas;an ignition device in a first longitudinal end of the generator;at least one outlet orifice for the combustion gas;a diffusing device for diffusing combustion gas towards an outside, the diffusing device along with the ignition device, the first gas reserve, and the second gas reserve being successively positioned along a longitudinal direction;a first closing lid closing the first reserve and capable of being opened, the first closing lid provided between the first gas reserve and the diffusing device;a second closing lid closing the second reserve capable of being opened, the second closing lid provided between the diffusing device and the second gas reserve; anda guiding wall, distinct from the first wall, provided in the first gas reserve for guiding a pressure wave generated by the ignition device up to the first dosing lid in order to open the first closing lid, the guiding wall including at least one hole for letting through gas in the first reserve;the diffusing device including a conduit for letting through gas, the conduit arranged to guide the pressure wave from the first dosing lid to the second closing lid in order to open the second closing lid, and which communicates with the outlet orifice;wherein the ignition device is capable of being actuated in order to open the first and second closing lids and initiate combustion of the first reactive gas with the second reactive gas in order to generate combustion gas. 2. The gas generator according to claim 1, wherein the first wall extends towards the diffusing device with a first inner wall having at least one hole for letting through gas, closed by the first lid attached to the first inner wall, the second reserve is delimited by an outer wall extending towards the diffusing device with a second transverse inner wall having at least one hole for letting through gas closed by the second lid attached to the second inner wall. 3. The gas generator according to claim 2, wherein the first closing lid is attached to the first inner wall on a side of the reserve away from the diffusing device. 4. The gas generator according to claim 2, wherein the second closing lid is attached to the second inner wall on a side of the second reserve away from the diffusing device. 5. The gas generator according to claim 2, wherein the diffusing device has an outer diffusing wall, which delimits an inner conduit, which includes the at least one outlet orifice and which surrounds the first and second inner walls of the first and second reserves, formed by stamping of the first and second outer walls. 6. The gas generator according to claim 1, wherein the guiding wall includes a shoulder bearing against the first dosing lid attached to the diffusing device. 7. The gas generator according to claim 1, wherein the ignition device includes an electro-pyrotechnic initiator including electric control pins which are accessible at the first longitudinal end of the generator and a cap containing a pyrotechnic charge including one side turned towards a separation wall for separation relatively to the first reserve, so that application of an electric control signal to the pins causes ignition of the pyrotechnic charge of the initiator causing breaking of the separation wall and release of the pressure wave in the guiding wall upon triggering. 8. The gas generator according to claim 1, wherein the first and second lids are attached onto first and second sides of the diffusing device respectively, the conduit opening into the first side towards the first lid on the one hand and into the second side towards the second lid on the other hand, the conduit in the extension of the guiding wall. 9. The gas generator according to claim 8, wherein the first and second sides of the diffusing device are located inside the first and second reserves respectively, the orifice provided on an outer surface of the diffusing device extending between the first side and the second side. 10. A gas generator comprising: a first reserve of pressurized gas delimited by a first wall, the first reserve of pressurized gas containing a first reactive gas;a second reserve of pressurized gas containing a second reactive gas;an ignition device provided in a first longitudinal end of the generator;a diffusing device for diffusing combustion gas towards an outside, the diffusing device along with the ignition device, the first gas reserve, and the second gas reserve being successively positioned along a longitudinal direction;a first closing lid closing the first reserve and capable of being opened, the first closing lid provided between the first gas reserve and the diffusing device;a second closing lid closing the second reserve capable of being opened, the second closing lid provided between the diffusing device and the second gas reserve; anda guiding wall in the first reserve of pressurized gas and spaced from the first wall, the guiding wall for guiding a pressure wave generated by the ignition device up to the first closing lid in order to open the first closing lid, the guiding wall including at least one hole in communication with the first gas reserve;wherein the ignition device is capable of being actuated in order to open the first and second closing lids and initiate combustion of the first reactive gas with the second reactive gas in order to generate combustion gas. 11. The gas generator of claim 10, wherein the diffusing device defines a chamber partially delimited by a first internal transverse wall having a first passage covered by the first closing lid and a second internal transverse wall having a second passage covered by the second closing lid. 12. The gas generator of claim 10, wherein the at least one hole allows for flux of gas between an internal compartment defined by the guiding wall and the first reserve of pressurized gas. 13. A gas generator comprising: a first reserve of pressurized gas;a second reserve of pressurized gas;a diffusing device for diffusing combustion gas toward an outside;a guide tube disposed in the first reserve of pressurized gas, the guide tube including at least one hole in communication with the first gas reserve;a first closing lid closing the first reserve, the first closing lid disposed between the diffusing device and the first gas reserve;a second closing lid closing the second reserve, the second closing lid disposed between the diffusing device and the second gas reserve;an ignition device proximate the guide tube and operative to generate a pressure wave for opening the first and second closing lids. 14. The gas generator of claim 13, wherein the diffusing device along with the ignition device, the first gas reserve, and the second gas reserve are successively positioned along a longitudinal direction. 15. The gas generator of claim 13, wherein the diffusing device defines a chamber partially delimited by a first internal transverse wall having a first passage covered by the first closing lid and a second internal transverse wall having a second passage covered by the second closing lid. 16. The gas generator of claim 13, wherein the at least one hole allows for flux of gas between an internal compartment defined by the guide tube and the first reserve of pressurized gas.
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