| 摘要 |
The present invention relates to a belt retractor with a belt shaft comprising a shaft body, a profiled head and a torsion bar, wherein the torsion bar arranged in the shaft body is connected by a first end to the shaft body and by a second end to the profiled head, and the profiled head can be blocked fixedly on the vehicle, and with a belt tensioner, wherein a tensioning drive wheel of the belt tensioner is directly connected to the profiled head of the belt shaft for rotation therewith and wherein bodies of mass can be brought into engagement with the tensioning drive wheel in a force-transmitting manner for driving the belt shaft in the winding-up direction, characterized in that the tensioning drive wheel (16) is formed as two parts by the profiled head (1) of the belt shaft and a push-on ring (2), which is pushed onto the profiled head (1) and connected to it in a frictionally engaging and interlocking manner, wherein there are formed on the profiled head (1) and on the push-on ring (2) hemispherical part-receptacles (3), which respectively lie opposite one another and complement one another to form receptacles for the bodies of mass. |
