| 摘要 |
<p>The invention relates to a safety belt retractor having a tensioning device (3), comprising: a pyrotechnic drive unit (12) for driving a belt winding shaft (1) of the safety belt retractor in the winding direction, formed by a gas generator, which when activated generates a pressure in a tube (7), and a force transmission system, which is guided in the tube (7) and can be driven by the pressure, and an orifice (6) disposed in the tube (7), wherein a cavity (9) formed by the components of the safety belt retractor is provided on the safety belt retractor, and the orifice (6) opens into the cavity (9).</p> |
