INFLUENCE OF THE POSITION OF SEAT BELT ANCHORAGES AND OF SEAT FIXINGS ON THE OPERATION OF SEAT BELTS

EINFLUSS DER LAGE DER GURTVERANKERUNGSPUNKTE UND DER SITZHALTUNG AUF DIE WIRKUNG VON SICHERHETISGURTEN

The investigation concerned the influence of the position of seat belt anchorages and seat fixings - determined by body size, seating arrangements and seat positions - and the rigidity of the seat and the slackness of the belt upon the protective operation of seat belts. After a number of preliminary tests 40 simulated frontal crashes at speeds of about 50 kph were carried out with variations of known parameters, and occupants kinematics, forces acting on the belt and the deceleration forces on various dummies were recorded and reviewed. The following information deriving from the trial results is of particular importance: (1) the area of tolerance for the position of the anchorage points according to ECE-14 should be reduced, in order to ensure the optimum belt geometry (.e.g. shoulder belt angle 50 degrees, pelvis belt angle 60 degrees). (2) the seat padding should have the highest possible stiffness and a "ramp"; a back slope of about 10 degrees from vertical is optimal. (3) the slackness of the belt has - in addition to the rigidity of the seat and the position of the lower anchorage points - the greatest effect upon the quality of restraint; it should be kept to the minimum. /TRRL/

  • Corporate Authors:

    Battelle-Institut EV, West Germany

    Postschliessfach 900160
    6000 Frankfurt/Main,   Germany 
  • Authors:
    • Hontschik, H
    • Rueter, G
  • Publication Date: 1976-6

Language

  • German

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 58 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00182732
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: Oct 31 1978 12:00AM