Patent ID: 6145925
Filing Date: 2000-11-14
Classification: B60N

Abstract:
Backrest for vehicle seats, comprising:a backrest frame,a backrest cushion which is fastened to the backrest frame,a foamed cushion layer,a ventilation layer which covers the cushion layer formed as a coarse-mesh spaced knit through which air flows, anda ventilator fan for active ventilation of the backrest cushion,wherein a mechanical lordosis support, which can be adjusted for an adaptation to a spinal column curvature of a seat user is fastened to the backrest frame, andwherein the fan is fastened largely centrally in a cushion area on the lordosis support at low vibrations such that it moves along without force in any adjustment of the lordosis support and in this case remains within an air duct sufficiently dimensioned for this purpose in a clear cross-section, which air duct penetrates the cushion layer from its rearward side facing the lordosis support to the ventilation layer.