초록 ▼

A pyrotechnic gas generator for motor-vehicle safety in the form of a one-piece cylindrical body (1) which comprises a side wall (2) and a transverse wall (3) which divides the body (1) into an upstream compartment (4) and a downstream compartment (5). These compartments (4, 5) each contain a pyrote

A pyrotechnic gas generator for motor-vehicle safety in the form of a one-piece cylindrical body (1) which comprises a side wall (2) and a transverse wall (3) which divides the body (1) into an upstream compartment (4) and a downstream compartment (5). These compartments (4, 5) each contain a pyrotechnic charge (6, 7) and an ignition system (15, 16). A lid (30) and a can (31) are fixed to the external side wall (2) and constitute a diffusion chamber. A safety unit (26) grips part of the side wall (2) and makes it possible, depending on the electrical signals received by the generator (100), either to inflate the airbag partially or to inflate the airbag completely with the possibility of modulating the rate of inflation.

대표청구항 ▼

[ What is claimed is:] [1.] Pyrotechnic gas generator (100) intended for motor-vehicle safety, which comprises a cylindrical body (1) having a side wall (2) provided with two ends (13, 14) and with a gastight transverse wall (3) dividing said cylindrical body (1) into an upstream compartment (4) and

[ What is claimed is:] [1.] Pyrotechnic gas generator (100) intended for motor-vehicle safety, which comprises a cylindrical body (1) having a side wall (2) provided with two ends (13, 14) and with a gastight transverse wall (3) dividing said cylindrical body (1) into an upstream compartment (4) and a downstream compartment (5), a pyrotechnic charge (6, 7) and an ignition system (15, 16) being arranged in each compartment (4, 5), said body having at each of its ends (13, 14) one of the two ignition systems (15, 16), characterized in that,i) the side wall (2) has several initially blocked-off orifices (24, 25) in each compartment (4, 5);ii) a safety unit (26) grips part of the side wall (2) of the body (1) and allows each compartment (4, 5) to be isolated from combustion gases coming from the other compartment;iii) a casing, consisting of a lid (30) and a can (31) which are fastened to each other, grips the side wall (2) of the cylindrical body (1) and forms a diffusion chamber (32) around said wide wall (2); andiv) the casing (30, 31) includes vents for exhausting the combustion gases.