A gas generator (10) comprises an outer housing, which has at least two housing parts (12), which are connected to each other, in the form of a diffuser bowl (14) with outflow openings (16) towards the outside and a cover (20) directly connected to the diffuser bowl (14). Inside the gas generator (1
A gas generator (10) comprises an outer housing, which has at least two housing parts (12), which are connected to each other, in the form of a diffuser bowl (14) with outflow openings (16) towards the outside and a cover (20) directly connected to the diffuser bowl (14). Inside the gas generator (10), at least one first and one second combustion chamber (30, 36) are provided, wherein the first combustion chamber (30) is delimited by an inner wall (32) and the second combustion chamber (36) is located within the space delimited by the diffuser bowl (14) and the cover (20). The diffuser bowl (14) and/or the cover (20) comprise a section (24) that is shaped, in particular deep-drawn, into an indentation, forming at least partially a circumferential section of the inner wall (32).
대표청구항▼
1. An inflator (10) comprising an outer housing which has at least two housing parts (12; 12′) connected to each other in the form of a diffuser bowl (14; 14′) with outflow openings (16; 16′) towards the outside and a cover (20; 20′) directly connected to the diffuser bowl (14; 14′), wherein inside
1. An inflator (10) comprising an outer housing which has at least two housing parts (12; 12′) connected to each other in the form of a diffuser bowl (14; 14′) with outflow openings (16; 16′) towards the outside and a cover (20; 20′) directly connected to the diffuser bowl (14; 14′), wherein inside the inflator (10) at least a first and a second combustion chamber (30, 36; 36′) are provided and wherein the first combustion chamber (30) is confined by an inner wall (32; 32′) and the second combustion chamber (36; 36′) is located within the space confined by the diffuser bowl (14; 14′) and the cover (20; 20′), wherein the diffuser bowl (14; 14′) and/or the cover (20; 20′) comprise a section (24; 24′) that is shaped into an indentation forming at least partially a circumferential section of the inner wall (32; 32′) that defines the first combustion chamber (30), the section (24; 24′) being closed by a closing member (26; 26′) that further defines the first combustion chamber (30) and comprises one or more outflow openings (50). 2. The inflator according to claim 1, wherein the first combustion chamber (30) is surrounded by the second combustion chamber (36; 36′) at least in sections at least in the area of the circumferential wall of the first combustion chamber (30). 3. The inflator according to claim 1, wherein the housing parts (12; 12′) are shaped so that they are connected to each other along an outer closed curve (22; 22′) and along an inner closed curve (34; 34′), wherein the second combustion chamber (36; 36′) is formed between the outer and inner closed curves (22, 34; 22′, 34′). 4. The inflator according to claim 3, wherein at least one of the curves (22, 34; 22′, 34′) have a circular shape. 5. The inflator according to claim 3, wherein the inner wall (32; 32′) is mounted directly to a bottom of the opposite housing part at the inner curve (34; 34′). 6. The inflator according to claim 3, wherein the housing parts (12; 12′) are interconnected by welding, the welds being located on the curves (22, 34; 22′, 34′). 7. The inflator according to claim 3, wherein the diffuser bowl (14; 14′) has outflow openings (16; 16′) for at least the second combustion chamber (36; 36′). 8. The inflator according to claim 1, wherein the inner wall (32; 32′) is mounted directly to the bottom of an opposite housing part (12; 12′). 9. The inflator according to claim 1, wherein the inner wall (32) is constituted by the shaped diffuser bowl (14). 10. The inflator according to claim 1, wherein the closing member (26; 26′) forms a third housing part (12; 12′). 11. The inflator according to claim 1, wherein the one or more outflow openings (50) are directed towards the outer area and/or the inner area of the inflator (10). 12. The inflator according to claim 11, wherein the housing part (12, 12′) provided with the indentation includes a bottom outside the indentation and the closing member (26, 26′) is adjacent to the bottom and/or the outflow opening (50) is located in the closing member (26) substantially level with the bottom. 13. The inflator according to claim 1, wherein respective separate outflow openings (50, 16) are associated with the first and second combustion chambers (30, 36). 14. The inflator according to claim 13, wherein the outer housing has an axial central axis (66) and the outflow openings (50) of the first combustion chamber (30) are located more closely to the central axis (66) by at least the factor 2 than the second combustion chamber (36). 15. The inflator according to claim 1, wherein the outer housing has an axial central axis (66) and the first combustion chamber (30) is arranged symmetrically with respect to the central axis (66). 16. The inflator according to claim 1, wherein the cover (20; 20′) is bowl-shaped. 17. The inflator according to claim 1, wherein the housing part (12; 12′) provided with the indentation is bowl-shaped and the indentation extends into the interior of the bowl. 18. The inflator according to claim 1, wherein an igniting device (42′) associated with the second combustion chamber (36′) is arranged in a separated area (76) of the first combustion chamber. 19. The inflator according to claim 1, wherein the first combustion chamber (30) is divided into two areas (76) independent of each other, wherein separate outflow openings (48′; 82) are associated with each area (76). 20. The inflator, according to claim 1, wherein all outflow openings (50) of the first combustion chamber (30) are arranged in the outer housing such that they are located on one side of a first plane (72) including an axial central axis (66) of the outer housing. 21. The inflator according to claim 20, wherein the outflow openings (50) arranged in the outer housing of the first combustion chamber (30) are located in a sector which is formed by the first plane (72) and a further second plane (74) including the axial central axis (66), the sector having an angle of less than or equal to 90°. 22. The inflator according to claim 20, wherein outflow openings (16) of the second combustion chamber (36) are arranged on a third plane (68) located substantially perpendicularly to the axial central axis (66). 23. The inflator according to claim 22, wherein the outflow openings (50) of the first combustion chamber (30) are arranged on a fourth plane (64) which is disposed substantially in parallel to the third plane (68) comprising the outflow openings (16) of the second combustion chamber (36). 24. The inflator according to claim 23, wherein the distance between the third plane and the fourth plane (68, 64) is between 11 and 21 mm. 25. A module comprising an inflator, an airbag inflatable by the inflator (10) and a mounting means for attaching the module, especially in the interior of a vehicle, wherein the inflator (10) is formed in accordance with claim 1. 26. The inflator according to claim 1, further comprising an igniting device (38; 38′) located at an end of the combustion chamber (30; 30′) opposite the closing member (26; 26′). 27. An inflator (10) comprising an outer housing which has at least two housing parts (12; 12′) connected to each other in the form of a diffuser bowl (14; 14′) with outflow openings (16; 16′) towards the outside and a cover (20; 20′) directly connected to the diffuser bowl (14; 14′), wherein inside the inflator (10) at least a first and a second combustion chamber (30, 36; 36′) are provided and wherein the first combustion chamber (30) is confined by an inner wall (32; 32′) and the second combustion chamber (36; 36′) is located within the space confined by the diffuser bowl (14; 14′) and the cover (20; 20′), wherein the diffuser bowl (14; 14′) and/or the cover (20; 20′) comprise a section (24; 24′) that is shaped into an indentation forming at least partially a circumferential section of the inner wall (32; 32′), wherein the outer housing has an axial central axis (66) and the first combustion chamber (30) is arranged eccentrically with respect to the central axis (66). 28. An inflator (10) comprising an outer housing which has at least two housing parts (12; 12′) connected to each other in the form of a diffuser bowl (14; 14′) with outflow openings (16; 16′) towards the outside and a cover (20; 20′) directly connected to the diffuser bowl (14; 14′), wherein inside the inflator (10) at least a first and a second combustion chamber (30, 36; 36′) are provided and wherein respective separate igniting devices (38, 42; 38′, 42′) are associated with the at least two combustion chambers (30, 36; 36′), the housing parts (12; 12′) are connected along a circumferential line and the diffuser bowl (14; 14′) and the cover (20; 20′) separate the two combustion chambers (30, 36; 36′) from each other by at least one joint contact area spaced apart from the circumferential line. 29. An inflator, comprising: a diffuser bowl with outflow openings directed away from an interior of the inflator, the diffuser bowl including an outer surface presented outside the inflator and an opposite inner surface;a cover directly connected to the diffuser bowl;a closing member directly connected to the outer surface of the diffuser bowl, the outer surface of the diffuser bowl and the closing member defining a first combustion chamber, the inner surface of the diffuser bowl and the cover defining a second combustion chamber; anda first ignition device associated with the first combustion chamber and a second ignition device associated with the second combustion chamber, wherein the first and second ignition devices are mounted in respective openings in at least one of the diffuser bowl and cover.
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이 특허에 인용된 특허 (7)
Yamazaki, Masayuki, Apparatus including igniter assembly.
Jung, Christian; Hoffmann, Achim; Gabler, Michael; Tischer, Andreas, Gas generator for a vehicle occupant safety system, airbag module and vehicle occupant safety system comprising a gas generator of this type, and production method.
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