Absorber of collision energy, utilizing imperfection of supporting structure of a car seat - the holes

摘要

every chair in wheeled vehicles is equipped with a stiffener to a support structure which carries the burden caused by passenger or other external phenomena. the stiffener is cited. anchorage points on the load by the vehicle.this structure consists in the vast majority of cases of framework base, equipped in its lower part in the seat back tilt, which in turn is connected with a seat in the utwierdzonym. this structure in normal performance is charged only static and works in the elastic.the problem arises when the frame is subjected to dynamic stresses during impact of the vehicle. the elastic action of the load-bearing during impact would have exceeded the limit for passenger congestion of internal organs and result in irreversible damage. to counteract this, it is necessary to wytu0119u017cenie that structure supporting area plastic surgeon.this part of the energy generated during the collision is absorbed by deformation of the load-bearing job. as a possible action of this element of the security provided for the forced rotation, resp. deformation in two planes: - in the zx plane, allowing for a rotation of the framework, in plane lp, allowing so-called. settling framework base.the mechanism of destruction leads to gobble up part of the collision energy, leading to the protection of the passenger against the effects of congestion.particularly desirable fatigue overload cervical spine, whose implementation is possible by deliberate weakening of the load-bearing, so that in the first phase of delivered energy was consumed on irreversible deformation (work material in space the plastic surgeon), allowing for controlled deflection torso contrary to the direction of acceleration.such behavior framework allows to decelerate relative motion with respect to the torso and head protection effect. section of the spine. in this case, the main component of energy absorbent is lower bracket. intentional spreparowanie imperfekcji causes its buckling (accelerated deformation), enabling small deflection framework of action contrary to accelerate.the degree of deformation may be controlled by the quantity of secondary openings controls or their arrangement as shown in figure 6, the geometric shape and size imperfekcji imperfekcji.therefore, a connecting frame base placed on a seat imperfekcja as deliberate deployment openings originators deformation allows control behavior framework of vehicle collision and impact favourably on allows for passenger safety.