| 摘要 |
<p>#CMT# #/CMT# The tensioner has a drive device attached to a part (2) of a belt shaft and driving the belt shaft in winding direction with an activation. Another part (1) is radially supported at the former part of the belt shaft. A set of projections (5) is radially directed at the former or latter part of the belt shaft in a region of a bearing face. A set of recesses (6) is provided at the parts of the belt shaft. The projections are engaged into the recesses. The parts of the belt shaft are interconnected in a form-fit manner in rotation direction of the latter part. #CMT# : #/CMT# The drive device is designed as a pyrotechnic drive device. The belt shaft is a two-piece belt shaft. The former part is profile head, and the latter part is a belt shaft body. #CMT#USE : #/CMT# Belt tensioner for a safety belt of a motor vehicle. #CMT#ADVANTAGE : #/CMT# The recesses are provided at the parts of the belt shaft, the projections are engaged into the recesses, and the parts of the belt shaft are interconnected in the form-fit manner in the rotation direction of the one of the two parts, so that connection between the projections can be canceled only by performing deformation, and the supplementary deformation work performed by a separate deformation element is avoided by a simple connection between the two parts, thus avoiding need of the deformation element, and hence achieving simplified construction in an inexpensive manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a cross-sectional view of a two-piece belt shaft before activation of a belt tensioner. 1, 2 : Parts of belt shaft 3 : Supplementary bearing ring 4 : Torsion bar 5 : Projections 6 : Recesses.</p> |
