| 摘要 |
The invention relates to a device which allows, in a belt system (1, 2, 3, 4, 5), to generate a force (F1, F2) sufficient to retain the occupant in the event of an accident once the slack in a belt system has been eliminated via a piston/cylinder system (10, 11, 13, 14) by a tensioning system using a gas (18) stored in a reservoir (17). The piston (13) is impinged upon by the gas (18) compressed in the reservoir (17) by releasing the closing piston (16) secured by a locking pin (15) or by a projectile destroying a membrane. The compressed gas (18) present in the reservoir (17) can be brought to the required operating pressure in the event of collision by means of a pyrotechnical propellant charge, thereby rupturing a burst membrane. The maximum level of the gas pressure can be influenced by a control valve (28). The gas pressure can be reduced after collision by means of a throttle opening (29). |
