A Study of Passenger's Whiplash Behavior during Rear-end Collision at Low Vehicle Speed : 2nd. Report ; Development of a seat to reduce whiplash inpact and maintain appropriate posture

概要

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A new sled type collision apparatus was developed, which was able to simulate an actual vehicle rear-end collision. Next, in order to obtain "compressing behavior" as an affecting force to a neck as well as deformation movements of "over-extension" and "shearing", an experiment for rear-end impact was carried out using the sled apparatus, and a collision simulation was also made with a computer program. On the basis of the result and a reference to the users' seat positions of general passenger vehicles, a trial seat was manufactured to enable reduction of whiplash injury. As a result, the occurrence of compression movement along the cervix to the spinal cord was suggested [1]. Consequently, to reduce whiplash injury during rear-end collision at low speed, it is necessary to repress the sharp compressing movement in the neck first, and second, the specific characteristic of the seat, for example, were devised to control the effective temperature that is important for the passenger to maintain appropriate seating posture.