초록 ▼

The generator is in the form of a one-piece cylindrical tube (1) which is broken down into an upstream part (7) and a downstream part (10) each containing in particular an igniter (13, 14) and a pyrotechnic charge, and which flank an intermediate part (8) constituting a diffuser. The upstream part (

The generator is in the form of a one-piece cylindrical tube (1) which is broken down into an upstream part (7) and a downstream part (10) each containing in particular an igniter (13, 14) and a pyrotechnic charge, and which flank an intermediate part (8) constituting a diffuser. The upstream part (7) and the downstream part (10) are each separated from the intermediate part (8) by an internal partition (3, 4) bearing a closed-off nozzle (5, 6). A safety valve (26) is pressed against the partition (4) and makes it possible to vary the volume of gas generated or the rate of inflation of the bag in accordance with the electrical signals received by the generator.

대표청구항 ▼

[ I claim:] [1.] Pyrotechnic hot-gas generator intended for motor vehicle safety, comprising a cylindrical tube (1) which has a side wall (2) the length (L) of the generatrices of which exceeds its outside diameter (D), two pyrotechnic charges and two firing systems (13, 14), characterized in that:i

[ I claim:] [1.] Pyrotechnic hot-gas generator intended for motor vehicle safety, comprising a cylindrical tube (1) which has a side wall (2) the length (L) of the generatrices of which exceeds its outside diameter (D), two pyrotechnic charges and two firing systems (13, 14), characterized in that:i) the tube is a one-piece cylindrical tube,ii) two internal partitions (3, 4) each carrying a nozzle (5, 6) which is initially closed off are crimped into the said wide wall (2) to split the said tube (1) into a continuous upstream part (7), an intermediate part (8) which has holes (9) and a continuous downstream part (10), the said upstream part (7) and downstream part (10) each containing a pyrotechnic charge,iii) the said tube (1) is closed at each of its ends by a blanking ring (11, 12) in which a firing system (13, 14) is inserted,iv) a safety valve (26) rests against the partition (4) crimped into the side wall (2) at the boundary between the intermediate part (8) and the downstream part (10) of the tube (1) so as to isolate the downstream part (10) from the gases coming from the upstream part (7).