Self-locking belt retractor

US8777269B2 · kind B2 · utility

Assignee

• Autoliv Development AB · SE

Inventors

• Uwe Bosse · Tornesch, DE
• Volkmar Heine · Hamburg, DE
• Klaus Butenop · Herzhorn, DE

Key dates

• Filing date: Sep 10, 2011
• Grant date: Jul 15, 2014
• Expiry date: Sep 10, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R22/341
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A self-locking belt retractor with a belt shaft which is mounted rotatably in a frame having a belt-sensitive a blocking device. A disc cam (1) mounted rotatably on the belt shaft, is pretensioned by a spring in the extension direction of the seat belt and on which an inertial mass (5) is mounted pivotably about a pivot axis (S). A projection (11) limits relative movement between the inertial mass (5) and the disc cam (1) is provided on the inertial mass (5) and/or on the disc cam (1).