FR2886823A1 - Person or object support device for forming e.g. rack, in fair, has horizontal plates carried by uprights, where device is formed of single part by folding flat plate with folding and cutting lines to delimit horizontal plates and uprights - Google Patents

Abstract

The device has horizontal plates (12) carried by uprights (16), where the device is formed of a single part by folding a rigid or semi-rigid flat rectangular plate (10). The plate (10) has horizontal folding lines (38), vertical folding lines (26, 32), and cutting lines (18,28,34,36) for delimiting the plates (12) and the uprights. The lines (32) and the vertical cutting lines extend along vertical edges (20) and delimit lateral sides (14).

Description

Device for supporting objects or a person

  The invention relates to a device for supporting objects or a person, comprising at least one horizontal tray carried by uprights and forming for example a shelf or a storage shelf or display of various objects, a table, a chair or an object storage or presentation module that can be associated with one or more other modules of the same type to form an assembly such as a library or the like.

  Devices of this type are most often made of wood, metal or plastic material and their components are assembled by connecting members such as dowels, screws, pins or the like that are operated by means of screwdrivers , keys or special tools, the assembly and disassembly of these devices taking a certain time and becoming complicated or impossible to achieve when one of the connecting members is lost or damaged or when the housing of a connecting member in a component of a device is damaged.

  The invention relates to a device for supporting various objects such as a shelf, a table or a storage module or a support device for a person such as a chair, which can be assembled and disassembled very simple and very fast, without the use of tools, which is both robust and aesthetic and can be transported and stored in a particularly convenient way.

  It proposes for this purpose a device for supporting objects or a person, comprising at least one horizontal plate carried by uprights, this device being characterized in that it is formed in one piece by folding a flat plate of rigid or semirigid material comprising folding lines and cutting lines delimiting the above-mentioned platens and uprights.

  Thanks to the fact that this device is formed in one piece and can be assembled and disassembled by simply folding a plate of semi-finished material B6300 Anderson Second patent project of 24.05.05 rigid, it avoids any manipulation of tools of screwing or the like and corresponding connecting members, it also avoids any risk of loss or deterioration of these connecting members and the device in the storage position is in the form of a flat plate that is easy to transport and store.

  In one embodiment of the invention, this plate is a quadrilateral and has horizontal fold lines connected at their ends to U-shaped cutting lines to form trays.

  The plate may comprise small fold lines which extend vertically from the fold lines of the trays and which are connected at their ends to U-shaped or V-shaped cut lines to form support bars for the trays when these are brought into service position.

  The plate may also comprise vertical folding lines and vertical cutting lines which extend along its vertical edges and define lateral faces of the device. In the service position, the lateral faces are folded at 90 relative to their position. initial position and frame the trays of the device which are themselves folded in horizontal service position.

  The aforementioned plate comprises other vertical folding lines connected to cutting lines and delimiting vertical uprights intended to cooperate with the aforementioned trays to support horizontal service position.

  The parts of the plate which form the vertical uprights are rotated by 90 around the fold lines to be brought into the service position and have L-shaped cuts on their inner edge, these cuts forming stops on which the edges of the trays are applied in the service position.

  The cutting lines delimiting the vertical uprights are preferably U-shaped and extend along a vertical edge and two horizontal edges of the plate being connected to the ends of the B6300 Anderson Second patent project of May 24, 055 branches of the U to vertical fold lines that connect these ends to the horizontal edges of the plate.

  The aforementioned lateral faces are also delimited by U-shaped cutting lines which extend along a vertical edge and of two horizontal edges of the plate and whose ends are connected by vertical folding lines to the horizontal cutting lines. which delimit the vertical amounts mentioned above.

  Advantageously, the lateral edges of the plates each comprise an L-shaped slot which is intended to receive a said lateral face during the rotation of the corresponding plate towards its horizontal service position.

  This allows to secure the plate and the two side faces that extend from one side and the other of the tray in the service position.

  In one embodiment of the invention where the device is a table, the plate is a polygon and has horizontal and vertical section lines delimiting pairs of adjacent uprights which are connected at one of their ends by a line of bending to the plate, the fold line of one of the uprights of the pair of uprights being opposite the fold line of the other upright of this pair of uprights.

  Each post is intended to be rotated 60 (for example) around the corresponding fold line and to join the other adjacent post to form a foot of the table.

  In another embodiment of the invention, the plate is a polygon and has on its upper part a U-shaped cutting line extending along the vertical and horizontal edges of the plate and connected at its ends to at least one folding line for delimiting a support plate of a person, and on a lower portion of the vertical uprights of the device which are delimited by vertical lines of folding which extend along the vertical edges of the plate from its edge B6300 Anderson Second patent project of the lower 24. 05.05 and which are connected at their upper ends by cutting lines at the lower edge of the plate.

  The device here forms a chair whose feet are formed by the vertical uprights and by the parts of the plate located between the fold lines and the vertical edges of the plate, the seat is formed by the plate plate, and the backrest is formed by the upper horizontal edge and the vertical edges of the upper plate.

  The aforementioned flat plate may be square, rectangular or trapezoidal.

  As a variant, the plate is T-shaped and has vertical horizontal lines on its vertical end which delimit vertical plates and uprights, and on its horizontal end vertical lines of folding substantially aligned with the vertical edges of the vertical end of the plate. the plaque.

  This makes it possible to form a parallelepiped storage module that can be used with other modules of the same type to form, for example, a shelf or a library. The modules can be arranged next to each other, one above the other or staggered.

  The fold lines of the horizontal end define on either side of the upper part of the second plate side faces of the device can be rotated 90 around these fold lines to be brought into the service position.

  Advantageously, the plate is made of composite material having a laminated structure comprising two rigid sheets, for example metal sheets, connected to one another by a layer of deformable plastic material.

  This composite material may be of the type that is marketed under the brand name DIBOND and which is a material that is both solid and light, comprising a polyethylene core mounted between two thin aluminum plates.

  When the aforementioned flat plate is made of such a composite material, B6300 Anderson Second patent project of May 24, 05, the two thin sheets or thin sheets of plastic core coating are split along the fold lines and the said cup and the plastic material of the core is thinned along the fold lines and cut non-planarly along the cutting lines.

  The invention will be better understood and other characteristics, details and advantages thereof will appear more clearly on reading the description which follows, given by way of example with reference to the accompanying drawings, in which: FIG. a schematic perspective view of an embodiment of the device according to the invention; FIG 2 is a schematic front view of this device in storage or transport position; FIG. 3 is a diagrammatic front view of this device in the operating position; - Figure 4 is a schematic vertical sectional view along the line IV-IV of Figure 3; FIG 5 is a schematic front view of an alternative embodiment of the device according to the invention; FIG. 6 is a schematic perspective view of an alternative embodiment of the device according to the invention; - Figure 7 is a schematic front view of this device in storage or transport position; Figure 8 is a schematic side view of this device in the service position; FIG. 9 is a schematic side view of an instrument for operating the devices according to the invention of FIGS. 1 and 6.

  - Figure 10 is a schematic perspective view of another alternative embodiment of the device according to the invention; - Figure 11 is a schematic top view of this device in storage or transport position; B6300 Anderson Second patent project of May 24, 05 - Figure 12 is a schematic side view of this device in the service position; FIG. 13 is a schematic perspective view of another alternative embodiment of the device according to the invention; - Figure 14 is a schematic front view of this device in storage or transport position; - Figure 15 is a schematic side view of this device in the service position; FIG. 16 is a schematic perspective view of another alternative embodiment of the device according to the invention; - Figure 17 is a schematic front view of this device in the service position; - Figure 18 is a schematic side view of this device in the service position; - Figure 19 is a schematic view of this device in storage or transport position; Figures 20 and 21 are enlarged partial schematic views schematically showing a fold line and a cut line, respectively.

  Referring first to Figures 1 to 4 which schematically show a first embodiment of a device according to the invention.

  This device consists of a rectangular flat plate 10 of a rigid or semi-rigid material, for example a composite material of the DIBOND type as indicated above, which comprises fold lines and cutting lines. delimiting trays 12, side faces 14 and uprights 16.

  In the embodiment shown, the device comprises four trays 12 of rectangular shape, the number and shape of these trays can be determined at will.

  The vertical uprights 16 of the device are two in number and B6300 Anderson Second patent project of May 24, 05 are each delimited by a vertical section line 18 extending along a vertical edge 20 of the plate 10 at a distance relatively weak of this vertical edge and ending at a relatively small distance from the horizontal edges 22 of this plate. The ends of the vertical section line 18 are each connected to a horizontal section line 24 which extends for a certain distance towards the inside of the plate 10, up to a vertical line of folding 26, shown in broken lines, which extends from the horizontal section line 24 to the corresponding horizontal edge 22 of the plate 10.

  The lateral faces 14 of the device are also two in number and are each delimited by a U-shaped cutting line which extends inside the U-shaped cutting line 18, 24 of a vertical upright 16 and which comprises a vertical section line 28 extending parallel to the vertical section line 18 (which is here approximately in the middle between the vertical line 28 and the corresponding vertical edge 20 of the plate), each vertical section line 28 being connected at its ends to a horizontal section line 30 which extends inwardly to a vertical line of folding 32 shown in broken lines, this vertical line of folding 32 connecting the horizontal cutting line 30 to the Horizontal cutting line 24 of the vertical upright 16 corresponding.

  As can be seen in FIG. 2, each lateral face 14 forms a U which lies inside another U formed by the corresponding upright 16.

  The trays 12 are themselves between the U forming the lateral faces 14 and are each delimited by a U-shaped cutting line comprising a horizontal line 34 and two vertical lines 36 of equal length extending downwards from the ends. of the horizontal cutting line 34, the lower ends of the vertical cutting lines 36 being interconnected by a horizontal fold line 38.

  With this arrangement, the trays 12 are brought into the service position as shown in FIG. 1 by pivoting downwards around B6300 Anderson Second patent project of May 24, 05, their fold line 38.

  It would be possible to invert the positions of the horizontal cutting line 34 and the horizontal fold line 38, and the feeding of each tray 12 into the service position would then be by pivoting up the tray around its horizontal fold line. .

  When the trays 12 are in the horizontal operating position, they are held in this position by engagement of their horizontal free edge in a triangular cutout 40 formed in the inner edge of each upright 16, the cutout 40 comprising a horizontal portion 42 and an oblique portion 44 as shown in FIG.

  For this, it is necessary that the width of each plate 12, that is to say the distance between the horizontal lines 34 and 38 is substantially equal to the distance between the vertical line of folding 26 of a vertical upright 16 and the bottom of the notch 40.

  When each plate 12 comprises a vertical flange 46 which is formed along its horizontal free edge by a fold line 48 shown in broken lines, it is the distance between the folding lines 38 and 48 which must be equal to the distance between the vertical line of folding 26 of an upright 16 and the bottom of the notch 40.

  In all cases, the horizontal portions of the notches 42 are at the same level as the horizontal lines 38 for folding trays 12. This device is used as follows: From the plane position or transport storage position shown in FIG. 2, the uprights 16 are pivoted around the horizontal fold lines 26 and the lateral faces 14 around the vertical folding lines 32 of 90, on the same side with respect to the plate 10, and the plates 12 are pivoted by 90 downwards around the horizontal fold lines 38 to bring them into the service position, by engaging their free horizontal edge or their flange 46 in the corresponding notches 40 of the uprights 16.

  B6300 Anderson Second draft patent of May 24, 05 In this position, the trays 12 are well supported and can withstand relatively high loads.

  The lateral faces 14 of the device are folded along the lateral edges of the trays 12 (it is sufficient for this that their vertical folding lines 32 are vertically aligned with the vertical cutting lines 36 delimiting the trays 12) and can be secured to these edges. laterally by the means diagrammatically shown in FIG.

  This means comprises a notch or slit 50 in L cut out in each lateral edge of a plate 12 and intended to engage on the corresponding lateral face 14 when the plate 12 is folded down into a horizontal operating position, the lateral face 14 then being engaged in the notch 50 of each plate 12 and retained in this notch.

  This engagement can be facilitated when the fold lines 32 of the lateral faces 14 are not exactly aligned with the vertical cutting lines 36 delimiting the plates 12, but are slightly offset inwards with respect to the plate 12.

  The embodiment variant shown in FIG. 5 differs from the embodiment of FIGS. 1 to 4 in that the plate 10 is of trapezoidal and non-rectangular shape, with a small horizontal base at its upper end and a large horizontal base at its lower end. , the two longitudinal edges 20 of the plate being no longer vertical, but slightly inclined obliquely to the vertical. The cutting lines 18 and 28 delimiting the vertical uprights 16 and the lateral faces 14 are oblique and parallel to the longitudinal edges 20 of the plate, as are the lateral section lines 36 delimiting the plates 12.

  In this variant embodiment, the trays 12 are five in number and have progressively decreasing dimensions from one to the other from the bottom to the top.

  FIGS. 6 to 8 show an alternative embodiment which essentially comprises trays 12 delimited as B6300 Anderson Second patent project of May 24, 05, previously described by U-cut lines 34, 36 and fold lines 38, and horizontal bars 68 for supporting and supporting these trays which are intended to be positioned under the trays, substantially perpendicular to the plate and the trays in the service position.

  In the example shown, the trays 12 are five in number and each of them is supported by two bars 68 which are formed in the plate at a distance from each other. Each bar 68 is substantially triangular and delimited by a small vertical fold line 70 which extends downwardly from the fold line 38 of the corresponding plate and which is connected at its ends to two cutting lines 72, 74 which are connected to each other. between them. The cutting line 72 is horizontal and coincides with the folding line 38 of the corresponding plate, and the cutting line 74 is oblique.

  Small U-cut lines 76 are formed in the trays and connect the ends of the cutting lines 72, 74 opposite to the folding lines of the corresponding bars 68. These cutting lines 76 define lugs intended to be engaged in corresponding slots 78 of the trays when they are brought into horizontal service position.

  To move from the storage position shown in Figure 7 to the service position shown in Figure 6, the bars 68 of 90 are rotated around the fold lines on the same side of the plate, and the trays are rotated 12 down around the fold lines 38 until their slots 78 are engaged on the pins 76.

  The device can then be fixed on a vertical support such as a wall by means of screws 79 or the like. FIG. 9 shows schematically an instrument which is intended to facilitate the deployment of the two previously described devices in the service position and which comprises on a straight vertical support 64 a series of horizontal fingers 66 all extending on the same side of the B6300 Anderson Second patent project of 24.05.05 vertical support 64 and that can be engaged simultaneously on all the trays 12 to fold horizontally in the service position.

  As shown, these horizontal fingers 66 are of different lengths, for example progressively decreasing downwards. Alternatively, their lengths may be identical.

  Another variant of the device is shown in Figures 10 to 12, the plate 110 having a single plate 112 and several uprights of the tray to form a table.

  In the example shown, the amounts are eight in number and 10 associated in pairs to form four table legs.

  Four of the uprights 114 are delimited by vertical cutting lines 116 which extend from the horizontal edges 118 of the plate and along its vertical edges 120 at substantially 40% of the height of the plate. These uprights 114 are connected at their opposite ends to the horizontal edges 118 of the plate by horizontal fold lines 122 to the plate.

  The four other uprights 124 are located inside the uprights 114. They are delimited by horizontal cutting lines 126 aligned with the aforementioned fold lines 122, these cutting lines 126 being connected at one of their ends to the line of folding. corresponding cut 116 and at their other ends to vertical cutting lines 128 adjacent to the cutting lines 116 and which terminate near the corresponding horizontal edges 118 of the plate. The end of each of these cutting lines 128 opposite the cutting line 126 of the corresponding upright 124 is connected by a horizontal fold line 130 to the cutting line 116.

  The posts 114 and 124 have the same dimensions and are intended to be rotated about 60 to one side of the plate so that the free end portions of the posts intersect as shown in FIG. 12. forming an angle of about 60.

  Horizontal notches or notches 132 are formed on the B6300 Anderson Second patent project of 24.05.05 free end portions of the uprights where they are intended to cross each other. These notches 132 are connected to the corresponding cutting lines 116 and extend at mid-width of the uprights.

  Notches 132 of adjacent uprights 114, 124 are engaged one in the other until the outer lateral edges of these uprights are located in the same plane (FIG. 10).

  The plate 210 of the variant embodiment of Figures 13 to 15 is rectangular and has on its upper part a seat plate 212 of a person and on its lower part vertical uprights forming four legs of a chair.

  The plate 212 is U-shaped and is delimited by two U-shaped cutting lines 214, 216 of the same type as previously described, which are one inside the other and connected together at their lower ends by two lines. The outer section line 214 extends along the upper horizontal edge 220 and the vertical edges 222 of the plate, close to them.

  The lower part of the plate has two vertical fold lines 224 which delimit two vertical uprights 226, 228 and extend from the lower horizontal edge 230 of the plate, along the vertical edges 222 of the plate, close to those ci and about 40% of the height of the plate.

  The upper end of each fold line 224 is connected by two L-cut lines 232, 234 to the lower horizontal edge 230 of the plate. A first L-cut line 232 includes a horizontal end 234 connected to the fold line 224 and a vertical end 236 extending toward the platen 212 and connected to a substantially horizontal end 238 of the second L-cut line 234. This horizontal end 238 is connected to the lower edge 226 of the plate by a vertical end 240 of the cutting line 234. In the example shown, the vertical ends 240 of the cutting lines 234 of the two uprights 226 and 228 are merged.

  B6300 Anderson Second patent project of May 24, 05 The posts 226, 228 are intended to be rotated about 85, and to support the plate 212 via the horizontal ends 238 of the cutting lines 234 when the tray is brought in horizontal service position.

  These horizontal ends 238 comprise U-shaped recesses 242 in the direction of the plate 212 which are intended to be engaged in corresponding slots 244 formed on the plate 212 near its lateral edges, during the rotation of the plate towards its operating position.

  One of the uprights 228 has on an upper part a horizontal fold line 246 connected at its ends to a U-shaped cut line 248 to delimit a side shelf 250 of the device.

  This tablet 250 is secured to bars 252 as previously described with reference to the embodiment of FIGS. 6 to 8.

  The posts 226, 228 each comprise a U-cut line 254 which is connected at its ends to the lower horizontal edge 230 so as to form the legs of the chair. The front legs of the chair are formed between the cutting lines 254 and the vertical end 240 of the cutting line 234 and the rear legs are formed between the cutting lines 254 and the vertical edges 222 of the plate and include the lines. folding 224.

  The posts 226, 228 also comprise rectangular cutting lines 256 in order to lighten the device and to form, between these lines and the cutting lines 248, 254, horizontal bars 258 for reinforcing the device.

  The device of FIGS. 16 to 19 is a parallelepiped storage module which is formed from a T-plate 310. The plate 310 comprises a vertical end having horizontal fold lines 312 which extend between the vertical edges 314. of the plate and which delimit portions 316, 318 and 320 trays B6300 Anderson Second draft patent of 24.05.05 and uprights 324, 326 and 328 support these trays.

  In the example shown, the vertical end of the plate comprises from its lower edge to its upper edge, a lower portion 316 of a first plate, a vertical upright 324, an upper portion 318 of the first plate, a vertical upright 326, a lower portion 320 of a second plate and a vertical upright 328.

  The horizontal end of the plate 310 comprises two vertical fold lines 330 which extend over the entire height of this end and which are aligned with the lateral edges 314 of the vertical end of the plate. These fold lines 330 delimit between them an upper part 322 of the second plate and the lateral parts 332 of the vertical end of the plate form lateral faces of the device in the service position.

  To put the device in the service position, for example, the following operations can be carried out starting with the lower end of the plate: The lower part 316 of the first plate is rotated at 90 around the fold line 312 which separates it from the post 324 backwards with respect to the plane of the drawing. In turn the vertical post 324 is moved around the fold line 312 which separates it from the upper portion 318 of the first tray to form a first U-shaped tray (Figure 16), the post 324 forming the front face of the first tray.

  The post 326 is rotatably displaced at 90 about the fold line 312 which separates it from the tray portion 318 forwards with respect to the plane of the drawing. This amount thus forms in the operating position a rear vertical amount of separation of the first plate of a second plate also formed by folding as described above the lower 320 and upper 322 parts of the second plate and the amount 328 forming the front face of this plateau.

  The lateral portions 332 of the plate are then moved around the corresponding fold lines 330 and folded against the trays B6300 Anderson Second patent project of May 24, 05.05 to form the lateral faces of the device.

  Each of these lateral portions 332 comprise a vertical band 334 delimited by a vertical folding line 336 which extends along the outer vertical edge 338 of this lateral part, close to the latter, and which is connected at its ends to horizontal edges 340 of this lateral part.

  These strips 334 are intended to be displaced around the fold lines 336 and to be folded against the upper part 316 of the second plate in the service position (FIG. 16).

  Side portions 332 may include rectangular torque lines 342.

  This module can be combined with a plurality of other modules of the same type to form a library or a storage space whose configuration is variable at will.

  Alternatively, this device may comprise more than two trays. This can be done by providing a T-plate 310 which would also include elements already described, other elements 316 ', 324', 318 'and 326' identical to the elements 316, 324, 318 and 326 and arranged in the same manner. by connecting by a fold line 312 'the amount 326' to the part 316.

  A module with three trays would thus be formed, the dimensions of the lateral parts 332 of the plate being such that the tongues 334 can be folded down on the upper part 316 'of the third plate.

  When the plate 10, 110, 210, 310 is a plate of composite material of the DIBOND type, it comprises, as shown schematically in FIG. 20, two sheets or thin plates of aluminum 52 and 54 connected by a core 56 made of flexible plastic material. or deformable, for example polyethylene. At the aforementioned fold lines, the plates 52 and 54 are cut and the core 56 is thinned as shown at 58 to form a hinge facilitating the folding.

  To form a cut line for example, and as shown B6300 Anderson Second patent project of 24.05.05 in Figure 21, the thin plates 52 and 54 are cut and the core 56 is also cut at the same level but not flat , for example in dihedron or arc to form a cavity 60 and a projection 62 which fit into each other with a clipping effect in the storage position of the device, which is thus a stable position.

  The device according to the invention can be used in particular in fairs, exhibitions, etc., for the presentation of objects, its characteristics allowing it to be very easily and very quickly put in the service position or in the storage position and transport. It is of course also usable in offices, in stores, in public places, etc., thanks to its qualities of robustness and stability.

  Furthermore, the invention is also applicable to the production of other furniture other than those which have been described in the foregoing and shown in the accompanying drawings.

  B6300 Anderson Second patent project of 24.05.05

Claims (15)

  1. A device for supporting objects or a person, comprising at least one horizontal plate (12) carried by uprights (16), characterized in that it is formed in one piece by folding a plate plane (10) of rigid or semi-rigid material having fold lines (26, 32, 38) and cutting lines (18, 24, 28, 34, 36) defining the at least one tray (12) and the posts (16) above.   2. Device according to claim 1, characterized in that the plate (10) is a quadrilateral and has horizontal fold lines (38) connected at their ends to U-shaped cutting lines (34, 36) to form trays. (12).   3. Device according to claim 2, characterized in that it comprises small fold lines (70) extending vertically from the fold lines (38) of the trays (12) and connected at their ends to cutting lines. U or V-shaped (72, 76) for forming tray support bars (68) when brought into the service position.   4. Device according to one of the preceding claims, characterized in that it comprises vertical folding lines (32) and vertical cutting lines (28) extending along its vertical edges (20) and defining side faces (14) of the device.   5. Device according to one of the preceding claims, characterized in that said plate (10) comprises vertical (18) and horizontal (24) cutting lines extending along its vertical (20) and horizontal (22) edges. ) and delimiting U-shaped uprights (16), connected to the plate (10) by vertical folding lines (26) and rotatable by 90 around these fold lines to be brought into the service position.   6. Device according to claim 5, characterized in that the vertical uprights (16) comprise, on their vertical inner edge, notches or cuts (40) substantially L-shaped forming B6300 Anderson Second draft patent of 24.05. 05 stops on which the edges of the trays (12) are applied in the service position.   7. Device according to claim 5 or 6, characterized in that the aforementioned lateral faces (14) are delimited by U-shaped cutting lines (28, 30) which extend along a vertical edge (20) and two horizontal edges of the plate (10) and whose ends are connected by vertical lines of folding (32) to the horizontal cutting lines (24) delimiting the vertical uprights (16) above.   8. Device according to one of claims 4 to 7, characterized in that the side edges of the trays (12) each comprise a slot or a notch (50) for receiving a side face (14) above the device during the rotation of the corresponding plate (12) towards its horizontal service position.   9. Device according to claim 1, characterized in that the plate (110) is a polygon and comprises horizontal (126) and vertical (116, 118) cutting lines delimiting pairs of adjacent uprights which are connected to one another. their ends by a fold line (122, 130) to the plate, the fold line (122) of one of the uprights (114) of the pair of uprights being opposite to the fold line (130) of the another amount (124) of this pair of studs.   10. Device according to claim 1, characterized in that the plate (210) is a polygon and has on a top a U-shaped cutting line (214) extending along the vertical (222) and horizontal (220) edges. ) of the plate and connected at its ends to at least one fold line to delimit a support plate (212) of a person, and on a lower portion of the vertical uprights (226, 228) of the device which are delimited by vertical folding lines (224) which extend along the vertical edges (222) of the plate from its lower edge (230) and which are connected at their upper ends by cutting lines (232, 234) at the lower edge (230) of the plate.   B6300 Anderson Second patent project of 24.05.05 11. Device according to one of the preceding claims, characterized in that the plate (10) is square, rectangular or trapezoidal.   12. Device according to claim 1, characterized in that the plate (310) is T-shaped and has on its vertical end horizontal folding lines (312) which delimit plates (316, 318, 320) and vertical uprights ( 324, 326, 328), and on its horizontal end vertical folding lines (330) substantially aligned with the vertical edges of the vertical end of the plate, to form a parallelepiped plate device.   13. Device according to claim 12, characterized in that the fold lines (330) of the horizontal end delimit on either side of the upper part (322) of the second plate side faces (332) of the device can rotate 90 about these fold lines (330) to be brought into the service position.   14. Device according to one of the preceding claims, characterized in that the plate (10) is made of composite material with a laminated structure comprising two rigid sheets or thin plates (52, 54), for example metal, connected to each other. other by a core (56) of deformable plastic material.   Device according to claim 14, characterized in that the rigid thin sheets or plates (52, 54) of the composite material are cut along the fold lines and cutting lines and the plastic core (56) is thinned along the fold lines and cut non-planarly along the cutting lines.   B6300 Anderson Second patent project of 24.05.05