Because of the larger manipulation distances and the frequently installed vibration-absorbing seats (with extra vibration damping), restraint systems in commercial vehicles must meet other requirements than those in passenger cars; it was found that integrated seat/belt systems (belt anchorage incorporated in the seat) are required.Five different types of integrated seat/belt systems were evaluated in frontal crash experiments at an impact speed of 35 km/h, using dummies in a truck cab on the catapult unit. The results were compared with those obtained with conventional three-point belts and with unrestrained dummies.The experimental results showed that when the dummy was unrestrained or protected only by a lap belt (even if integrated) the upper load limits used as protection criteria were far exceeded because of the heavy impact on the steering wheel; this did not apply to three-point belt systems. Very favourable forward displacement kinematics were achieved when using special seats of adequate structural strength with integrated three-point belt systems; in this case the load on the occupants' bodies lies within acceptable limits, and the occupants do not hit hard against interior parts of the cab.Further, the experiment showed that a vibration-absorbing seat with integrated three-point belt and additional supports fitted to the seat and backrest is the optimum solution.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Protection of Occupants of Commercial Vehicles by Integrated Seat/Belt Systems


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    23rd Stapp Car Crash Conference ; 1979



    Publication date :

    1979-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Protection of Occupants of Commercial Vehicles by Integrated Seat/Belt Systems

    Rueter,G. / Hontschik,H. / Battelle-Inst.,Frankfurt/Main | Automotive engineering | 1979


    Automatic belt restraint systems for motor vehicles occupants

    Johannessen,H.G. / OmniSafe,US | Automotive engineering | 1985


    The effect of fully seat-integrated front seat belt systems on vehicle occupants in frontal crashes

    Harberl,J. / Ritzl,F. / Eichinger,S. et al. | Automotive engineering | 1989


    The Effect of Fully Seat-Integrated Front Seat Belt Systems on Vehicle Occupants in Frontal Crashes

    Havberl, J. / Ritzl, F. / Eichinger, S. | British Library Conference Proceedings | 1996


    Crash Protection for Rear Seat Occupants

    Smith, Lynne | SAE Technical Papers | 1987