Seat belt retraction serial coupling mechanism

US6443380B1 · kind B1 · utility

Assignee

• TRW Occupant Restraint Systems GmbH & Co. KG · DE

Inventors

• Joachim Biller · Lorch, DE
• Wolfgang Holbein · Alfdorf, DE

Key dates

• Filing date: May 18, 2000
• Grant date: Sep 3, 2002
• Expiry date: May 18, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2022/468
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A coupling mechanism, in particular for connecting a belt tensioner drive with a belt spool of a belt retractor for a vehicle safety belt, comprises a driving part, an intermediate part, a driven part, a form-fitting coupling and a force-fitting coupling. The form-fitting coupling and the force-fitting coupling are connected in series. The coupling mechanism has an initial state in which the form-fitting coupling is engaged and the force-fitting coupling is disengaged.