ISOFIX: a new concept of installing child restraints in cars

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Turbell, Thomas¹; Lowne, Richard²; Lundell, Björn³; Tingvall, Claes⁴

ISOFIX: a new concept of installing child restraints in cars

©1993 Society of Automotlve Engineers, Inc.

Affiliations

¹Swedish Road and Transport Research Institute

²Transport Research Lab.

³Volvo Car Corp.

⁴FOLKSAM Research
Abstract

Even though child restraint systems (CRS) are very effective there are still serious problems because of non-use or misuse. This is often due to the fact that the installation of the CRS in the cars is difficult, complicated and unstable. A standardised interface between the CRS and the car seat would solve these problems. Within the ISO Committee ISO/TC22/SC12/WG1 this item has been raised and several proposals for an "ISOFIX" have been discussed. Apart from the installation aspects, other features e.g. disconnection of passenger airbags can be included in the system. Several concepts called ISOFIX type 1 to 7 with different working names e.g. DELTAFIX, EASY-FIX, MONOFIX and UNIFIX have been evaluated. The handling performance of some of the prototypes have been tested by customer evaluation with very positive results. Crash performance has also been investigated.The paper will give an update on the latest progress of this development, including a preliminary specification.
Links

DOI: 10.4271/933085

SAE: 933085

Cited By (18)

Year	Entry
1997	Lowne R, Roy P, Paton I. A comparison of the performance of dedicated child restraint attachment systems (ISOFIX). In: Proceedings of the 2nd Child Occupant Protection Symposium. November 12, 1997; Orlando, FL.71-85. SAE 973302.
1997	Pedder J, Gane J, Pasco D, Deibert M, Lumley M. Usability trials of alternative child restraint attachment systems. In: Proceedings of the 2nd Child Occupant Protection Symposium. November 12, 1997; Orlando, FL.61-69. SAE 973301.
2000	Weber K. Crash protection for child passengers: a review of best practice. UMTRI Res Rev. July–September 2000;31(3):1-27.
2002	Weber K. Child passenger protection. In: Nahum AM, Melvin JW, eds. Accidental Injury: Biomechanics and Prevention. 2nd ed. New York, NY: Springer-Verlag; 2002:523-549.
1994	Meissner U, Stephens G, Alfredson L. Children in restraints. In: 38th Annual Proceedings, Association for the Advancement of Automotive Medicine (AAAM). September 21-23, 1994; Lyon, France.93-106.
2004	Sherwood CP, Abdelilah Y, Crandall JR, Stevens SL, Saggese JM, Eichelberger MR. The performance of various rear facing child restraint systems in a frontal crash. In: 48th Annual Proceedings, Association for the Advancement of Automotive Medicine (AAAM). September 13-15, 2004; Key Biscayne, FL.303-321.
2007	Sherwood CP, Crandall JR. Frontal sled tests comparing rear and forward facing child restraints with 1-3 year old dummies. In: 51st Annual Proceedings, Association for the Advancement of Automotive Medicine (AAAM). October 15-17, 2007; Melbourne, Australia.169-180.
1994	Langwieder K, Hummel T. Biomechanical risk factors for children in cars and aggravation by misuse of restraint systems. In: Proceedings of the 14th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 23-26, 1994; Munich, Germany.1584-1597.
1996	Langwieder K, Hell W, Lowne R, Huijskens CG. Side impact to children in cars: experience from international accident analysis and safety tests. In: Proceedings of the 15th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 13-16, 1996; Melbourne, Australia.1046-1062.
1998	Nett R, Appel H. Child safety in small and micro cars. In: Proceedings of the 16th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 31–June 4, 1998; Windsor, Ontario, Canada.1660-1664.
2003	Monclus-Gonzalez J, Marzougui D, Bahouth G, Eskandarian A. An investigation of side impact test methodologies for child restraint systems using finite element simulations. In: Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 19-22, 2003; Nagoya, Japan.
2003	Langwieder K, Hummel T, Finkbeiner F, Roselt T. The significance of isofix in reducing misuse: analysis of potential on the basis of field observations and sled tests. In: Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 19-22, 2003; Nagoya, Japan.
2005	Jakobsson L, Isaksson-Hellman I, Lundell B. Safety for the growing child: experiences from Swedish accident data. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
2017	Visvikis C, Thurn C, Krebs C. The effect of ISOFIX on booster seat performance in UN regulation no. 129 front impact tests. In: Proceedings of the 25th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 5-8, 2017; Detroit, MI.
2000	Le Claire M, Lowne R, Langwieder K, Hummel T. Loadings to children in cars in frontal collisions: experience from ECE-R44 test bench results compared with car results. In: Proceedings of the 2000 International IRCOBI Conference on the Biomechanics of Impact. September 20-22, 2000; Montpellier, France.335-343.
1994	Bell R, Burleigh D, Czernakowski W. ISOFIX: the potential of a universal vehicle/child restraint interface for misuse reduction and performance enhancement. In: Proceedings of the 38th Stapp Car Crash Conference. October 31–November 2, 1994; Fort Lauderdale, FL. Warrendale, PA: Society of Automotive Engineers:225-234. SAE 942220.
1994	Pedder J, Legault F, Salcudean G, Hillebrandt D, Gardner W, Labrecque M. Development of the CANFIX infant and child restraint/vehicle interface system. In: Proceedings of the 38th Stapp Car Crash Conference. October 31–November 2, 1994; Fort Lauderdale, FL. Warrendale, PA: Society of Automotive Engineers:235-244. SAE 942221.
2002	Lowne R, Le Claire M, Roy P, Paton I. Dedicated child attachment system (ISOFix). Traffic Inj Prev. 2002;3(1):19-29.