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Seat Belt Improvements
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English
Abstract
Over the past few years, the use of seat belts has greatly increased in Europe, but much less so in the U.S. Seat belt improvements have been made in the following areas:
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- Design changes allowing easier access and operation such as the release button being located on top of the buckle.
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- Significant reduction in unlocking efforts needed when the belt is under load, allowing the occupant caught in his seat belt in a rolled-over car to disengage himself by applying normal pressure on the release button.
On buckles
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- Reduction of belt pressure on the shoulder without decreasing the strap storage capacity or wearing clearance.
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- Reduction of the belt efforts required for strapping the belts by means of improvements in the operation of the retraction mechanism and by reducing belt deployment friction outside the retractor.
Comfort points
These improvements have been implemented over the years to reduce unpleasantness in the wearing of the belts and to overcome certain psychological reservations to their use. These improvements have not been made available on U.S. models, which are equipped with classic seat belts strictly in compliance with FMVSS 209.
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Citation
DeRosa, D. and Larsonneur, J., "Seat Belt Improvements," SAE Technical Paper 840400, 1984, https://doi.org/10.4271/840400.Also In
References
- FORET-BRUNO J.Y. et al. “Correlation Between Thoracic Lesions and Force Values Measured at the Shoulder of 92 Belted Occupants Involved in Real Accidents” Proceedings of 22nd Stapp Car Crash Conference
- THOMAS C. et al. “Influence of Age and Restraint Force Value on the Seriousness of Thoracic Injuries Sustained by Belted Occupants in Real Accidents” Proceedings of the 4th International IRCOBI Conference on the Biomechanics of Trauma Göteborg Sweden September 5-7, 1979
- TARRIERE C. “Proposal for a Protection Criterion as Regards Abdominal Internal Organs” Proceedings of 17th AAAM Oklahoma City Oklahoma November 14-17, 1973
- LEUNG Y.C. TARRIERE C. LESTRELIN D. GOT C. GUILLON F. PATEL A. HUREAU J. “Submarining Injuries of 3-Point Belted Occupants in Frontal Collisions - Description, Mechanisms and Protection” Proceedings of 26th Stapp Car Crash Conference Ann Arbor, Michigan October 20-21, 1982
- WALFISCH G. FAYON A. LEUNG Y.C. TARRIERE C. GOT C. PATEL A. “Synthesis of Abdominal Injuries in Frontal Collisions Sustained by Real-Life Accident Victims. Problems of Simulation with Dummies and Protection Criteria.” Proceedings of IRCOBI Göteborg Sweden September 7-9, 1979
- LEUNG Y.C. TARRIERE C. FAYON A. MAIRESSE P. BANZET P. “An Anti-Submarining Scale Determined from Theoretical and Experimental Studies Using Three-Dimensional Geometrical Definitions of the Lap Belt” SAE Paper No 811020 Proceedings of the 25th Stapp Car Crash Conference San Francisco September 28-30, 1981
- ADOMEIT D. APPEL H. “Influence of Seat Design on the Kinematics and Loadings of the Belted Dummy” Proceedings of the 4th International IRCOBI Conference on the Biomechanics of Trauma Göteborg Sweden September 5-7, 1979