A self-expanding foldable structure for a display has a structure that includes a pair of side walls (2) hinged at respective connection edges (2a) to opposing edges of a back wall (1) and a shelf (3) linked to the back and side walls (1, 2) such that they can adopt a flat position in which the back
A self-expanding foldable structure for a display has a structure that includes a pair of side walls (2) hinged at respective connection edges (2a) to opposing edges of a back wall (1) and a shelf (3) linked to the back and side walls (1, 2) such that they can adopt a flat position in which the back wall, side walls and shelf (1, 2, 3) are substantially coplanar and an expanded position in which the back wall, side walls and shelf (1, 2, 3) form respective dihedrons. An elastic element is arranged to push the structure to the expanded position. The side walls (2) comprise a transverse fold line (14) having one or more scored sections (14a) wherein an inner structure of the wall material is crushed, in combination with one or more cut sections (14b) wherein said inner structure of the wall material has flat edges that can mutually face and support one another in the expanded position.
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1. A self-expanding foldable structure for a display, comprising a back wall;a pair of side walls having connection edges hingedly joined to opposite edges of said back wall, said side walls being pivotable about said connection edges between a flat position, in which the back and side walls are sub
1. A self-expanding foldable structure for a display, comprising a back wall;a pair of side walls having connection edges hingedly joined to opposite edges of said back wall, said side walls being pivotable about said connection edges between a flat position, in which the back and side walls are substantially coplanar, and an expanded position, in which the back and side walls form respective dihedrons with one another configuring a display rack;at least one transverse fold line provided in said back and side walls perpendicular to said connection edges, the back and side walls being foldable about said transverse fold line from said flat position to a compact folded position;a shelf linked to at least one of the back and side walls and configured to be arranged substantially coplanar with the back and side walls in the flat position and between the side walls forming respective dihedrons therewith in the expanded position, said shelf being supported with respect to the back and side walls in the expanded position by support means; andat least one elastic element connected to the side walls and arranged to push the structure towards the expanded position;wherein the back wall and the side walls are made of a relatively rigid material selected from a group comprising cardboard, corrugated cardboard, plastic, corrugated plastic and foam board, said relatively rigid material having opposite planar outer faces and an inner structure suitable for withstanding stresses in one or more directions parallel to said planar outer faces; andwherein said at least one transverse fold line comprises, at least in said two side walls, one or more scored sections, in which said inner structure of said relatively rigid material is crushed along the transverse fold line, in combination with one or more cut sections, in which the inner structure of the relatively rigid material is cut but not crushed along the transverse fold line and has flat edges that mutually face and support one another when the display is in the expanded position. 2. The self-expanding foldable structure according to claim 1, characterized in that said relatively rigid material of the back and side walls is corrugated cardboard or corrugated plastic in which said inner structure comprises inner flutes arranged substantially perpendicular to said scored sections and cut sections of the transverse fold line. 3. The self-expanding foldable structure according to claim 1, characterized in that the scored sections are comprised of two parallel scored lines which are mutually separated and substantially equidistant from the adjacent cut section or sections, the separation between said two scored lines being selected according to the thickness of the relatively rigid sheet material between said outer faces. 4. The self-expanding foldable structure according to claim 1, characterized in that the transverse fold line includes limit cuts transverse thereto located at limits between the scored sections and the cut sections. 5. The self-expanding foldable structure according to claim 1, characterized in that said back wall and said side walls are formed from a first sheet piece in which the hinged joints between the back wall and the side walls are fold lines, and which includes at least one of said transverse fold lines perpendicular to said fold lines. 6. The self-expanding foldable structure according to claim 1, characterized in that said support means comprise, for each end of the shelf adjacent to one of the side walls, a link panel having first and second edges forming a first acute angle with one another, said first edge of the link panel being hingedly joined to a corresponding end edge of the shelf and said second edge hingedly joined to an inner face of the corresponding side wall in an inclined position forming a second acute angle with the connection edge of the corresponding side wall. 7. The self-expanding foldable structure according to claim 6, characterized in that the first and second edges of the link panel are oriented so that they or imaginary prolongations thereof converge in a vertex located in the connection edge of the corresponding side wall. 8. The self-expanding foldable structure according to claim 6, characterized in that said back wall, said side walls and said shelf form respective rectangular trihedrons with one another in the expanded position, and in that said first acute angle between the first and second edges of each link panel is a 45° angle and said second acute angle between the second edge of each link panel and the connection edge of the corresponding side wall is a 45° angle. 9. The self-expanding foldable structure according to claim 7, characterized in that each link panel is divided into two portions by a fold line, said fold line being oriented so that it or an imaginary prolongation thereof converges in said vertex. 10. The self-expanding foldable structure according to claim 6, characterized in that the shelf is hingedly joined at a first edge to said back wall. 11. The self-expanding foldable structure according to claim 6, characterized in that said shelf and said link panels are formed from a second sheet piece of a relatively rigid material selected from a group comprising cardboard, corrugated cardboard, plastic, corrugated plastic and foam board, wherein the hinged joints between said shelf and the link panels are fold lines. 12. The self-expanding foldable structure according to claim 11, characterized in that said second sheet piece comprises a first joining flange connected to a back edge of the shelf at a fold line and in the operative position it is adhered to an inner face of the back wall, and second joining flanges connected to the second edges of the link panels at respective fold lines and in the operative position they are adhered to the inner faces of the corresponding side walls. 13. The self-expanding foldable structure according to claim 12, characterized in that said elastic element is an elastic band connected at its ends to both of said two side walls below the shelf, and the second sheet piece comprises several additional portions connected to one another by fold lines, said additional portions including at least one flange or lower panel configured to at least partially conceal said elastic element. 14. The self-expanding foldable structure according to claim 13, characterized in that said additional portions of the second sheet piece include at least one reinforcement panel connected to a front edge of the shelf at a fold line, wherein said reinforcement panel and the shelf form a dihedron at least in the expanded position. 15. The self-expanding foldable structure according to claim 6, characterized in that said display rack comprises a pedestal formed by a lower shelf linked to the side walls by said link panels, a base panel with a back edge hingedly joined to a lower edge of the back wall, and a front wall with upper and lower edges hingedly joined to front edges of said lower shelf and of said base panel, respectively, wherein the base panel is parallel to the lower shelf and said front panel is parallel to the back wall. 16. The self-expanding foldable structure according to claim 15, characterized in that the lower shelf, the link panels, the base panel and the front panel are formed from a third sheet piece of a relatively rigid material selected from a group comprising cardboard, corrugated cardboard, plastic, corrugated plastic and foam board, wherein the hinges between the lower shelf and the link panels are fold lines, the hinge between the lower shelf and the front panel is a fold line, and the hinge between the front panel and the base panel is a fold line. 17. The self-expanding foldable structure according to claim 16, characterized in that said third sheet piece comprises a first joining flange connected to a back edge of the lower shelf at a fold line and in the operative position it is adhered to an inner face of the back wall, second joining flanges connected to the second edges of the link panels at respective fold lines and in the operative position they are adhered to the inner faces of the corresponding side walls, and a third joining flange connected to a back edge of the base panel at a fold line and in the operative position it is adhered to an inner face of the back wall. 18. The self-expanding foldable structure according to claim 1, characterized in that said elastic element is an elastic band connected at its ends to both of said two side walls. 19. The self-expanding foldable structure according to claim 1, characterized in that said back wall is a support and backing member, said side walls are support and armrest members, and said shelf is a seat of a self-expanding foldable display seat.
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이 특허에 인용된 특허 (20)
Barley Keith A. (806 E. Oklahoma Ponca City OK 74601), Collapsable table and support table.
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