| 摘要 |
Pyrotechnical driving device especially for a back-tightening device of a safety belt system with a cartridge containing a propellant charge, preferably a solid propellant charge. The cartridge is connected to a cylinder which contains a driving piston. The cartridge is separated from the piston by a rupture plate which is ruptured after the propellant charge is activated and after which the driving piston is accelerated. The rupture plate is followed directly by a form-stable nozzle plate which has a nozzle opening which is narrower as compared to the rupture plate. |
