| 摘要 |
PURPOSE: To provide a system for reducing surge load applied to the belt of a safety belt-restraining system at the time of a vehicle accident. CONSTITUTION: The belt tensioner 16 of a safety belt restraining system has a belt retractor 10 and a belt 14 running in a straight line from the belt retractor to a deflector fitting 12 and comprises a U-shaped fitting 18 mounting a pivotal bracket 22 perpendicular to the run of the belt in the rest condition. When the belt tensioner is urged, the pivotal bracket is pulled between the fitting 18 and a supporting member 20 to form a belt loop. An uncoupling/force limiter assembly 36 is arranged in cables 34, 38 connected to the pivotal bracket, and this assembly is provided with a guide tube 50 supported by the vehicle body and a converter tube 52 accommodated therein telescopically, which permits force-limitation and conversion of energy due to plastic deformation of the material when the belt is tensioned. |
