Seat belt buckle mounted belt tensioner removable for maintenance

摘要

A seat belt buckle mounted belt tensioner, for example a pre-tensioner, includes a bracket 32 fixable to a seat frame and a tensioning assembly releasably attachable to bracket 32. The tensioning assembly includes a housing 30, a buckle 20, a cylindrical container and a cable 36 passing through housing 30 and connecting buckle 20 and cylindrical container 28. Bracket 32 and housing 30 comprise outwardly extending releasably mateable portions 40, 44, and preferably include attachment interfaces, for example T-shaped connector 38, slot 42, a pin (64, Figure 5) or a tab (148, Figure 8) receivable in a notch (154, Figure 8). A fastener, for example a screw 46 or a clip may be provided to prevent movement of the housing relative to the bracket. The arrangement allows the tensioner to be easily removed from bracket 32 for maintenance. Bracket 32 may attach to other structural members of a seat such as a seat track.