Seat belt tensioner

US8210460B2 · kind B2 · utility

Assignee

• TAKATA CORPORATION · JP

Inventors

• Walter Scherzinger · Ulm, DE
• Roland Schnabl · Ulm, DE
• Thomas Schwer · Illertissen, DE

Key dates

• Filing date: Apr 12, 2006
• Grant date: Jul 3, 2012
• Expiry date: Apr 12, 2026

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60R2022/4685
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The disclosed seat belt tensioner for a seat belt system may comprise a seat belt spindle, a gearwheel connected to the seat belt spindle, and a latching pawl for locking the seat belt spindle in the tensioned position by engaging in the teeth of the gearwheel. The latching pawl may be configured to be brought into a first pawl position for blocking the gearwheel in the seat belt unrolling direction and into a second pawl position for blocking the gearwheel in the seat belt-tensioning direction of rotation. The latching pawl may also be configured to perform a first pivot-over operation from the first pawl position into the second pawl position and to perform a second pivot-over operation from the second pawl position into the first pawl position when the gearwheel exerts a force on the latching pawl that exceeds a predetermined force required for the respective pivoting-over operation.