Device for emergency cutting off fastened seatbelts

摘要

The fastened seatbelts cutting device for transport vehicle, especially automotive vehicles, featuring bushing-shaped housing with an explosive charge or a gas generator inside, the charge and generator connected with a system activating the belt cutting drive, also featuring a cutting knife and a slot for this knife or blade and a slot to house the belt being cut, has a pusher (6) located between the gas generator (4), chamber (3), and the cutting segment (7), sealed with respect to the working chamber (8) in the guide chamber (5), and the blade (9) cutting edge (21) is one of the sides of triangle connected with the blade (9) body seated in the cutting segment (7).

主权项

1. A device for emergency cutting off fastened seatbelts in transport vehicle or automotive vehicles, the device having a tubular housing with an explosive charge or a gas generator installed inside, connected with a system activating a drive of belt cutting, furnished with a cutting knife and a gap for the knife or a blade and a gap for the seatbelt being cut to be placed in it, wherein
a pusher (6) is situated between the gas generator (4) and a cutting segment (7), tight-sealed relative to a work chamber (8) in a guiding chamber (5), and the mass of a cylindrical cutting mandrel (7a) of the cutting segment (7) is adjusted to the power of a gas generator (4) charge, and a cutting edge (21) of the blade (9) is one of the sides of a triangle connected with a body of the blade (9) embedded in the cutting segment (7), wherein
a first sealing ring (15) is placed on the pusher (6), being a separate part from the cutting segment (7) and a second sealing ring (17) is placed in the guiding chamber (5) at its stop face (22), to prevent inadvertent moving out of the cutting segment (7) towards the belt (20).