IN SPEED

At the time of an accident with an active head restraint with a simple leverage mechanism ejects closer to passengers tulle. It will help to more effective and safer especially its deceleration in the recovery movement of the head after impact.

Active head restraint is an element of passive safety, has the task of bringing as near the driver's head at the time of conflict so that it allocated to his head, so stiffen his cervical spine and help capture the inertial forces burdensome at the moment of impact cervical spine.

Source: www.nissan-global.com

According to statistics, traffic accidents, for example, in Japan approx. 17% of traffic accidents full frontal impact and 48% rear impact. When the direction of travel accidents extremely threatened neck injury, especially for rear impact. Up to 90% injury is injury to the neck and the cervical spine. Active head restraint reduces the bending moment on the cervical spine up to 45%!

Source: www.nissan-global.com

There are also other principles than eject head rests purely mechanical. Eg. Active head restraint company Johnson Controls is using servomotor ejects within 20 milliseconds.

zdroj: www.johnsoncon­trols-press.com

publication of article: 6. March 2009 | inclusion of article: Safety

translated from the Czech original by automatic translation

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