Tightening device for a safety belt of a motor vehicle, has piston cylinder unit with cylinder, where piston is guided into pressure chamber of cylinder, and gas generator is provided for impinging pressure chamber with gas pressure

摘要

The tightening device (5) has a piston cylinder unit (6) with a cylinder, where a piston is guided into a pressure chamber of the cylinder. A gas generator is provided for impinging the pressure chamber with a gas pressure. A plastic sheath is equipped with a form structure projecting in outward direction. A rope (7) is secured against a rotation by the form structure of the plastic sheath.