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Three-Point Belt Improvements for Increased Occupant Protection
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English
Abstract
Standard three-point belts offer a maximum of comfort and convenience. We have developed various systems designed to improve protection performance as well. This paper describes two of these systems, presents all necessary data on test equipment and procedure, and discusses test results. These two systems are, respectively:
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The PYROTECHNIC PRETENSIONER, which retracts and preloads the belt by rotating the retractor spindle, thereby eliminating potential belt slack. The relations between actuation time, pretensioning, and improved occupant protection are shown.
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The WEBBING CLAMP to eliminate the spool-out effect of the webbing stored on the retractor spindle, in two different versions:
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- for clamping at the retractor, or
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- for clamping at the D-ring.
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Authors
Citation
Mitzkus, J. and Eyrainer, H., "Three-Point Belt Improvements for Increased Occupant Protection," SAE Technical Paper 840395, 1984, https://doi.org/10.4271/840395.Also In
References
- JOHANNESSEN H. VOS T. H. “The Changing Shape of Seat Belt Systems” SAE Paper No. 820796 June 1982
- APPEL H. VU-HAN V. “Schutzwirkung von Sicherheitsgurten - Band 3 - Auswertung von Gurtunfällen” Bundesanstalt für Straβenwesen Köln/W.Germany 1978
- WALZ F. NIEDERER P. al. “Analyse des accidents par rapport aux ceintures de sécurité” Départment Fédérale de Justice et Police Berne 1977
- WEISSNER R. “A Comparison of Advanced Belt Systems Regarding Their Effectiveness” SAE Paper No. 780414 March 1978
- HOFFMANN G. KöPKE W. WEISSNER R. DR. “The Influence of Preloading on the Efficiency of Belt Systems” ISATA Wolfsburg/West Germany Sept. 1978
- HOFFMANN G. WEISSNER R. “The Influence of the Delay Time on the Efficiency of Preloaded Belt Systems” ISATA Graz/Austria Sept. 1979
- REIDELBACH W. SCHOLZ H. “Advanced Restraint System Concepts” SAE Paper No. 790321 March 1979
- DEJEAMMES M. BIARD R. DERRIEN Y. “Improvement of the Automatic Belt: The Possible Efficiency of the Pyrotechnical Retractor” Lab. des Chocs et de Biomécanique – ONSER
- WALSH M. J. KELLEHER B. J. “Development of a Preloaded, Force-Limited Passive Belt System for Small Cars” SAE Paper No. 800300 Feb. 1980