IMPROVED SEAT SUSPENSION ARRANGEMENT AND ADJUSTMENT MECHANISM THEREFOR

摘要

A seat arrangement comprises a platform element in the form of a wire grid comprising side rails (1) between which extend a plurality of supporting wires (3) having angled portions (3A) such that the platform element is transversely extensible under load. The side rails (1) are linked to a seat frame (5) by wire links (6) that are subject to only limited extension so that the rails (1) are held thereby against substantial displacement from the plane of the frame (5). The rails (1) are also linked to the frame (5) by way of Bowden cables (9) that are anchored to the frame forwardly of the side rails (1) and that can be contracted to draw forwards portions of the side rails (1) between adjacent wire links (6), thus varying the contour of the platform element to provide adjustable lumbar support.