FR2813281A1 - CUT BLANK TO CONSTITUTE, BY FOLDING WITHOUT GLUING, A LOCKER OR DRAWER - Google Patents

Abstract

The invention relates to a blank cut to constitute, by folding without gluing, a box or drawer. The blank comprises a central panel (10) to which are connected a front panel (11), a rear panel (12) and two side panels (13, 14) each extended by a secondary panel (21, 22, 23, 24). ending with a folding edge, each side panel (13; 14) being further extended laterally by two folding flaps (15, 16; 17, 18). According to the invention, there is provided a wedge means, for example produced in the form of tabs (50; 51) extending the flaps (15; 17), said means being interposed between the internal faces facing the front panel (11) and the associated secondary panel (21) to form a bulge of the front wall of the rack or drawer mounted.

Description

The subject of the present invention is a cut blank which can be stored and

  delivered flat, and making it possible, by folding without gluing, a rack or drawer formed by a bottom and four walls, including a front wall, a rear wall and two side walls. It could be racks or drawers for filing, storing, archiving, or storing any products. This type of locker or drawer is usually made from a flexible deformable and foldable sheet, generally made of cardboard, but sometimes also of plastic, and the cut blank has the fold lines necessary for the conformation of the locker or drawer by folding and training of the different elements

constitutive.

  Known blanks are thus known of the type comprising a rectangular or square central panel intended to become the bottom of the rack or drawer, to which a front panel, a rear panel and two side panels are connected, each extended by an associated foldable secondary panel ending in a foldable edge, each side panel being further extended laterally by two foldable flaps, to form the four walls of the crate or drawer. This type of cut blank is well known in the art, and the locker or drawer obtained after assembly has four flat walls which are

thus undifferentiated.

  The problem that the invention proposes to solve is to produce a bulging of one of the walls of the crate or drawer, the bulging rather concerning the front wall which will be the most visible wall in the integration space of the crate or drawer. One could imagine simply playing on the dimensioning of the front panel so as to create a natural bulge after assembly, but in this case the bulge would concern the entire width of the front wall to the edges, so that the ends would no longer be edge edge, which would considerably damage the overall aesthetic. In addition, if we wanted to integrate a grip handle system, this natural bulge would not be suitable because it is too irregular. This problem is solved in accordance with the invention, by means of a cut blank of the aforementioned type, equipped with a wedge means interposed between the internal faces opposite the front panel and the associated secondary panel to form a bulging of the wall. front of the locker or drawer. The wedge means thus provided makes it possible to perfectly control the bulging of the front wall of the mounted crate or drawer, and to preserve the edge-to-edge contact at the

  level of the lateral ends of said wall.

  According to a first embodiment of the invention, the wedge means is an integral part of the

cut blank.

  Preferably then, the wedge means is constituted by a tongue extending at least one of the flaps framing the front panel. In particular, the or each tongue has at its mid-length a fold line for

to be double.

  According to another embodiment of the invention, the wedge means is attached, and is part of a handle member passing through the front panel. It may be possible to provide that the handle member also passes through the secondary panel associated with the front panel, for taking it behind said secondary panel. More preferably, the front panel has a grooving favoring the regularity of its bulging. In particular, the grooving may consist of two symmetrical curved lines approaching halfway up the

front panel.

  Advantageously also, the width of the secondary panel associated with the front panel is chosen to be slightly shorter than that of said front panel to tension the latter against the wedge means. This gives a perfectly satisfactory appearance of the front wall of the

locker or drawer fitted.

  Advantageously finally, the folded edges are shaped to achieve a natural wedging of the side panels folded inward. This gives very satisfactory stability of the mounted locker or drawer,

with its domed front wall.

  Other characteristics and advantages of the invention will appear more clearly in the light of the

  description which will follow and the attached drawing, with reference

  in Figures o: - Figure 1 is a top view of a blank according to the invention, as it is flat before folding; - Figures 2A, 2B, 2C illustrate in perspective the mounting of a locker or drawer from the aforementioned cut blank, the wedge means used being constituted by two tongues forming an integral part of the blank; - Figure 3 is a section along III / III of Figure 2C to better understand the arrangement of the above wedge means; - Figures 4 and 5 illustrate two drilling arrangements of the front wall of the aforementioned locker or drawer, to facilitate gripping; - Figure 6 and Figure 7 which is the associated section along VII / VII of Figure 6, illustrate another variant in which the wedge means is attached and is part of a handle member which is illustrated in exploded view at Figure 8; - Figure 9 also illustrates a variant of the previous arrangement, in which the handle member carrying the wedge means has an external shape of a drawer handle, the wedge means then being of elongated type, Figures 10 and 11 illustrating the handle member associated in two parts; - Figure 12 illustrates yet another variant, in which the handle member is snapped into the entire thickness of the front wall of the rack, the associated section along the line XIII / XIII of Figure 12, being

illustrated in figure 13.

  We will first describe the components of the blank

  cutout marked F shown flat in Figure 1.

  The blank F has a rectangular or square central panel 10, which is intended to become the bottom of the crate or drawer. A front panel 11, a rear panel 12 and two side panels 13, 14 are connected to this central panel 10, the connections being made by

  associated fold lines 1, 2, 3, 4 respectively.

  Each of these panels 11, 12, 13, 14 is extended by an associated folding secondary panel, respectively 21, 22, 23, 24, by means of an associated folding line 19, 20, 25, 26 respectively. note that the fold lines 19, 20 are here double fold lines to take account of the overlap of the foldable flaps mentioned below. Each folding secondary panel 21, 22, 23, 24 further ends in a folding edge, respectively 31, 32, 33, 34, to which it is connected by fold lines respectively 29, 30, 27, 28. Each side panel 13, 14 is further extended laterally by two foldable flaps 15, 16 respectively; 17, 18, the connections being made by lines of

  associated folding respectively 5, 6, 7, 8.

  The mounting of a rack or drawer from the cut blank F having the aforementioned panels is done by folding and dressing 90 of the panels 11, 12, 13, 14, and 90 folding of the flaps 15, 16, 17, 18, then folding the associated secondary panels 21, 22, 23, 24, out of 180 inwards, bringing the respective folded edges 31, 32, 33, 34 against the internal face of the central panel 10. The secondary panels 21, 22 are folded down by wrapping the associated flaps 15, 17 and

16, 18, conventionally.

  In accordance with an essential characteristic of the invention, a shim means is provided which is interposed between the internal faces opposite the front panel 11 and the associated secondary panel 21 to form a bulge

  of the front wall of the locker or drawer.

  In Figure 1, there is illustrated a first embodiment in which the aforementioned wedge means is an integral part of the cut blank F. Indeed, there is the presence of two tongues 50, 51 extending the flaps 15, 17 framing the panel frontal 11. One could alternatively provide only one of said tabs, but the symmetrical embodiment provided here facilitates the cutting of the blank, and preserves the symmetry of the bulging of the front wall of the mounted crate or drawer. The tabs 50, 51 are thus connected to the associated flaps 15, 17 by a fold line respectively 52, 54. Note also the presence of a fold line 53, 55 on each of these tabs 50, 51, preferably at length, to allow a double folding of each of said tabs. The arrangement and function of the tongues 50, 51 will be better understood with reference to FIGS. 2A, 2B, 2C

and in the section of figure 3.

  Figures 2A, 2B, 2C illustrate the successive stages of mounting a rack or drawer from the cut blank illustrated in Figure 1: - Figure 2A: the side panels 13, 14 have been erected at 90, and the secondary panels associated sides 23, 24 have been folded 180 inwards so that the folded edges 33, 34 are in contact with the central panel 10. The flaps 16, 18 have been folded 90 to come to the level of the fold line 2, and the flaps 15, 17 have also been folded back to come to the fold line 1. The tongues 50, 51 have also been folded against their respective flap 15, 17, double

  thickness in this case due to their folding at mid-length.

  - Figure 2B: the rear panel 12 has been erected at 90, and its associated rear secondary panel 22 has been folded 180 inwards, so that the folded edge

  partner 32 comes into contact with the bottom of the central panel 10.

  - Figure 2C: the front panel 11 has finally been erected at 90, so that its inner face comes into contact with the folded tabs 50, 51, and the associated front secondary panel 21 has been folded 180 inwards, so that its folded free edge 31 comes into contact with the central panel 10. Pressing the front panel 11 against the wedge means 50, 51 thus produced produces the desired bulging of the mounted crate or drawer. This locker or drawer is then noted 100, and it has a bottom 101 bordered by a front wall 102, a rear wall

  103, and two side walls 104, 105.

  It is interesting to provide that the front panel 11 has a grooving favoring the regularity of its bulging. In the present case, as can be seen in FIG. 1, a groove has been provided consisting of two symmetrical curved lines 40. As can be seen in FIG. 2C, the two symmetrical curved lines 40 approach at mid-height of the panel front 11, that is to say of the front wall 102 of the rack or drawer 100 mounted. The section in Figure 3 provides a better understanding of the arrangement of the different thicknesses (five in number

in this case) thus superimposed.

  The width of the secondary panel 21 associated with the front panel 11 (distance between the fold lines 19 and 29) will preferably be chosen slightly shorter than the width of the front panel 11 (distance between the fold lines 1 and 19) to stretch this last against

  wedge means, in this case the folded tabs 50, 51.

  This makes it possible to tension the front panel 11 against the means

  wedge to have a perfectly controlled domed appearance.

  In addition, the folded edges 31, 32, 33, 34 will advantageously be shaped to achieve a natural wedging of the secondary panels 21, 22, 23, 24 folded inward. This is in particular important for the folded edge 31 which is associated with the secondary front panel 21, because the wedging which it produces ensures the tension of the curved front wall of the mounted rack or drawer. In the case of a drawer, it is advantageous to provide a means facilitating the extraction of the drawer. We can then provide as shown in Figures 4 and 5, one or two holes 41 which pass through both the front panel 11 and the associated secondary panel 21. These holes easily allow a finger to pass

to pull the drawer 100 mounted.

  The previously described wedge means is an integral part of the cut blank, but it may be provided as a variant that the wedge means is attached, and forms part of a handle member passing through the front panel 11. We will describe with reference to Figures 6 to 13, different embodiments of such a wedge means

reported.

  In Figures 6 to 8, there is provided a

  handle 60 produced in two complementary parts 61, 62.

  The part 62, in the form of a cylindrical washer, has a rod 62.1 which can be plugged into a blind bore 61.1 of the part 61. The front panel 11 has a central bore 42 in which the rod 62.1 has passed, and the assembly of the two components 61, 62 encloses this front panel 11, the part 62 then constituting the wedge means which is interposed between the internal faces opposite the front panel 11 and the associated secondary panel 21 to form the desired bulging of the front wall of the crate or drawer 100. In this case, the component 62 is in abutment against one and / or the other of the external face of the flaps 15, 17. It will be understood that the component 62 performs exactly the same function that the tabs 50, 51 which were an integral part of the previous blank. Figures 9 to 11 illustrate another variant in which the handle member 70 is externally in the form of a traditional drawer handle. In this case, the handle member 70 has two elongated components, namely a component 71 forming an external handle, and a component 72 which constitutes the wedge means which is interposed between the internal faces opposite the front panel 11 and the associated secondary panel 21. There is an assembly by force snap-fastening, with pins 72.1 made of material on the component 72, which are received in sleeves with blind holes 71. 1 of the component 71. When the two components are assembled, the wall thickness of the front panel 11 is sandwiched between the two components

  71, 72 at two holes in said panel.

  Figures 12 and 13 illustrate yet another variant in which the handle member denoted 80 also passes through the secondary panel 21 associated with the panel

  front 11 for a rear socket of said secondary panel.

  It can be seen that the handle member 80 is formed of three components, namely a component 81 intended to form the external handle, a component 82 intended to constitute the wedge means interposed between the facing internal faces, and a component 83 coming to bear against the inner face of the folded front secondary panel 21, so as to ensure the rear grip of said panel. When these three components 81, 82, 83 are assembled, the wall thickness of the front panel 11 is pinched between the components 81, 82, so that the component 82 can form the desired shim means, and the double wall thickness of the shutter 15 and / or 17 and of the secondary panel 21 is clamped between the components 82, 83. Any geometry suitable for the component 83 can be chosen, which can be a component of frustoconical shape passed by force in the double drilling of the wall front of the locker or drawer 100. It is also possible to provide a bayonet type system according to which the added component is inserted through a corresponding opening, then rotated by a desired angle to achieve

locking in position.

  The cut blank which has just been described can be made of any material in the form of a flexible deformable and foldable sheet, and one can choose either cardboard or a plastic material

  such as polypropylene or polystyrene.

  The invention is not limited to the embodiments which have just been described, but on the contrary encompasses any variant incorporating, with equivalent means, the essential characteristics set out

upper.

Claims (10)

  1.Flan cut to form, by folding without gluing, a rack or drawer formed by a bottom and four walls, including a front wall, a rear wall and two side walls, said blank comprising a central panel (10) rectangular or square intended to become the bottom of the rack or drawer, to which a front panel (11), a rear panel (12) and two side panels (13, 14) are connected, each extended by an associated folding secondary panel (21, 22, 23 , 24) ending with a folding edge (31, 32, 33, 34), each side panel (13; 14) being further extended laterally by two folding flaps (15, 16; 17, 18), to form the four walls of the locker or drawer, characterized in that it is fitted with a wedge means (50, 51; 62; 72; 82) interposed between the internal faces opposite the front panel (11) and the secondary panel associated (21) to form a bulge of   the front wall of the locker or drawer.   2. Blank according to claim 1, characterized in that the wedge means (50, 51) is an integral part of said blank. 3. Blank according to claim 2, characterized in that the wedge means is constituted by a tongue (50; 51) extending at least one of the flaps (15; 17) framing the front panel (11).   4. Blank according to claim 3, characterized in that the or each tongue (50; 51) has mid-length   a fold line (53; 55) to be double.   5. Blank according to claim 1, characterized in that the wedge means (62; 72; 82) is attached, and is part of a handle member (60; 70; 80) passing through the front panel (11).   6. Blank according to claim 5, characterized in that the handle member (80) also passes through the secondary panel (21) associated with the front panel (11), for a   taken behind said secondary panel.   7. A blank according to one of claims 1 to 6,   characterized in that the front panel (11) has a groove (40) promoting the regularity of its bulging. 8. Blank according to claim 7, characterized in that the grooving (40) consists of two symmetrical curved lines approaching halfway up the front panel (11).   9. Blank according to one of claims 1 to 8,   characterized in that the width of the secondary panel (21) associated with the front panel (11) is chosen slightly shorter than that of said front panel to stretch this last against the wedge means.   10. Blank according to one of claims 1 to 9,   characterized in that the folded edges (31; 32; 33; 34) are shaped to produce a natural wedging of the secondary panels (21; 22; 23; 24) folded inwards.