| 摘要 |
The invention relates to a rotating tensioner for a safety belt, with a tensioning drive coupled to the belt shaft in the form of a drive wheel with recesses on the periphery thereof, for accepting mass bodies acting as drive means, whereby the mass bodies are stored in a tube and accelerated in the tube by means of a gas generator. The invention is characterised in that the tube (17) is arranged, with at least one straight section (18) in a parallel direction to the belt shaft (13), between the opposing housing arms (12) of the U- shaped belt roller housing (11) and extends with a straight end section (19), running in the plane of the drivewheel (16) in a tangential direction to the drivewheel (16).
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