Folded seat stamped out of a sheet

Abstract

The invention relates to a folding seat ( 1 ) with back support ( 2 ) which can be made by folding and gluing operations of different parts composed of a sheet of cardboard ( 3 ).

1 . A seat foldable from an open state to a closed state, said seat being made of a sheet of cardboard stamped out in one piece, said cardboard sheet comprising a plurality of fold lines arranged such that the cardboard sheet comprises a plurality of parts interconnected at fold lines, the parts being arranged by folding and gluing operations such that the seat comprises ,in the open state, a sitting surface, a back support, a rear panel connected to at least one edge of the back support, two side members intermediate the back support and the rear panel and an underside, at least a portion of which is intermediate the back support and the rear panel, and further wherein the seat can be converted from the open to the folded state by one folding operation by virtue of the side members comprising a fold line which causes the side members to be folded in between the back support and the rear panel when the seat is folded closed, and and further by virtue of the part of the underside located between the back support and the rear panel having a fold line that causes the underside to be folded in between the back support and the rear panel when the seat is folded closed. 
   
   
       2 . A seat according to  claim 1 , wherein one side member has a fold line that forms a first locking part which is glued to the lateral edge of the rear panel. 
   
   
       3 . A seat according to  claim 2 , wherein an outer part of the sitting surface comprises a second locking part which is glued to the underside. 
   
   
       4 . A seat according to  claim 2 , wherein an outer part of the sitting surface comprises a second locking part which is glued to a portion of the sitting surface. 
   
   
       5 . A seat according to  claim 2 , wherein an outer part of the sitting surface comprises a second locking part which is glued to the underside and to a portion of the sitting surface. 
   
   
       6 . A seat according to  claim 1 , wherein the underside further comprises a portion that is glued to the underside of the sitting surface in order to increase the stability and rigidity of the seat. 
   
   
       7 . A seat according to  claim 1 , wherein the cardboard sheet includes a handle which is used for carrying a folded seat. 
   
   
       8 . A seat according to  claim 1 , wherein the seat is retained in a folded condition by the seat being equipped with a flap in the upper part of the back support and a groove in the lower end of the sitting surface which are adapted to be fastened together when the seat is folded. 
   
   
       9 . A seat according to  claim 1 , wherein, in the open state:
 the side members are at 90° to the back support and the rear panel;   a first locking part in one side member is glued to the lateral edge of the rear panel, thereby forming a cavity between the back support, the rear panel and the side members;   the underside is at around 60° to the rear panel and the back support, thereby closing the said cavity and the underside is glued to the underside of the sitting surface, and   a lower part with a second locking part is at 180° to the sitting surface and is glued to the underside of the sitting surface.   
   
   
       10 . A seat according to  claim 1 , wherein,
 edges of the back support, rear panel and intermediate underside portion are cojoined to form, when the seat is in the open state, an enclosure having a triangular cross-section, and further wherein the side members are triangular in shape and essentially cover the triangular openings of the enclose formed by the cojoined back support, rear panel and intermediate underside portions.   
   
   
       11 . A planar cardboard sheet, comprising cut outs and fold lines, the cut outs and fold lines arranged to permit assembly by folding and gluing, of a seat according to  claim 1 . 
   
   
       12 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 2 . 
   
   
       13 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 3 . 
   
   
       14 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 4 . 
   
   
       15 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 5 . 
   
   
       16 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 6 . 
   
   
       17 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 7 . 
   
   
       18 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 8 . 
   
   
       19 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 9 . 
   
   
       20 . A planar cardboard sheet according to  claim 11 , further arranged to permit assembly of a seat according to  claim 10 .