Safety belt arrangement in motor vehicles having a belt tensioner

US5743480A · kind A · utility

Assignee

• TAKATA (EUROPE) Vehicle Safety Technology GmbH · DE

Inventors

• Robert Kopetzky · Lonsee, DE
• Robert Wittmann
• Georg Bannert · Hirschhorn, DE
• Martin Wifling · Blaustein, DE
• Thomas Kempfle · Bibertal, DE
• Ulrich Diepold · Ulm, DE
• Andreas Wengert · Mutlangen, DE
• Christian Husung · Bobingen, DE

Key dates

• Filing date: Jan 31, 1996
• Grant date: Apr 28, 1998
• Expiry date: Jan 31, 2016

Classification

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

Abstract

The invention relates to a safety belt arrangement in vehicles having a belt tensioner comprising: a holder which is to be secured to the vehicle chassis, with a belt winding reel with a safety belt wound thereon being rotatably mounted on the holder; a belt retraction spring arrangement by means of which the safety belt is continuously lightly pretensioned in the draw-in direction so that it only loosely lies against the vehicle occupant secured by it; and an auxiliary drive which is separated drivewise by a clutch from the belt winding reel but is activated abruptly with an accident-dependent acceleration and is rotationally fixedly coupled to the belt winding reel via the then engaged clutch. The auxiliary drive has two band running chambers separated by sealing walls and two draw bands which are each arranged in one band running chamber, with the draw bands being secured at one end to a housing and at the other end to a drive reel and being acted on by the pressure source in the event of an accident-dependent acceleration of the vehicle in order to drive the drive reel which is fixedly connected to the belt winding reel in the belt draw-in direction. In accordance with the inve…