Patent ID: 6443380
Filing Date: 2002-09-03
Classification: B60R,F16D

Abstract:
A coupling mechanism for connecting a belt tensioner drive with a belt spool of a belt retractor for a vehicle safety belt, comprising:a driving part, an intermediate part, a driven part, a form-fitting coupling having a coupling means, a spring element and a retaining means, said coupling means being movable form an engaged position into a disengaged position, and a force-fitting coupling, said form-fitting coupling and said force-fitting coupling being connected in series, said coupling mechanism having an initial state in which said force-fitting coupling is disengaged and said form-fitting coupling is engaged and in which said coupling means is in its engaged position, said coupling means being held by said retaining means in its engaged position and being biased by said spring element such that said coupling means is movable by said spring element into said disengaged position on releasing of said retaining means.