Mechanical shifting of multi-load retractor

摘要

A seat belt retractor (20) comprising: a primary (40) and secondary (60) locking mechanism and deactivation mechanism (74) for mechanically deactivating the second locking mechanism (60) when the retractor is used by occupants not in a designated class; the retractor including at least two load limiting mechanisms including for example, a torsion bar and variable elongation webbing or a torsion bar and a friction brake (or clutch) configured to be selectively employed depending on the size of the occupant.