ES206106U - Improved disposition in folding backgrounds. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved arrangement in folding backrests, characterized in that the frames of the backrest and the seat are hingedly linked to each other through two deformable quadrilaterals located on each side which allow the correlative modification of the dihedral that form seat and backrest by anchoring the frame of the seat, by its rear area, to the fixed lower frame of the piece of furniture by means of movable joints and, by its front area, through respective plates hinged to said frame and to an intermediate point of the corresponding side of the fixed frame with respect to which the seat can swing on the cited later articulations; the aforementioned deformable quadrilaterals are constituted by the seat and the backrest in conjunction with a lower brace that is articulated to the backrest and to one of the arms of an elbow lever of first gender whose other arm is articulated, in turn, with the seat of form that the point of support of said lever constitutes a strut fixed articulately to the frame itself; all this so that, when the backrest is pulled back, the lower brace causes the tilting lever to tilt, causing the seat to rise simultaneously on its rear anchorage to the fixed frame, keeping the assembly in a stable depressed position due to the fulcrum of the lever lagging delayed with respect to the anchors of its two arms, limiting the extreme positions, normal and abatement, by both stops. (Machine-translation by Google Translate, not legally binding)