EP2602205A1 - Collapsible presentation case - Google Patents

Abstract

The case (1) has a foldable blank (2) that comprises a strip (3). The strip surrounds the blank in a longitudinal direction (D). Two flaps (31, 32) are movable relative to a bottom (30) of the case. Each of two bearing surfaces (51, 52) is allowed to receive one of the flaps in an unfolded position. A foldable structure (4) is movable so as to be folded between a flat folded position and a stable unfolded position. The foldable structure is folded about a folding pleat that is arranged relative to the longitudinal direction. The pleat defines an edge of a base surface. The blank is made of rubber or plastic.

Description

Field of the invention

The invention relates to a folding box for packaging at least one object or a piece of jewelery or timepiece, said box having a foldable blank which comprises at least one wrapping band extending in a longitudinal direction and movable between a flat unfolded position in a base plane and a folded position and having, on either side of a bottom, two flaps angularly movable relative to said bottom.

The invention relates to the field of object packaging, and more particularly to the field of cases, or transport or storage packaging for timepieces or jewelery.

Background of the invention

The packaging of objects, especially jewelry or timepieces requires the support of a good protection of the object.

A padding is usually used for this purpose, but the pad is generally not versatile, or it does not protect the object well.

It is best to move the object away from the box or case, to protect it from shocks and aggression.

In the particular case of jewelry or timepieces of substantially toric shape, it is known to use cushions on which these objects are threaded, however it is necessary to maintain the cushion itself, by embedding it in a cavity, or by padding it on both sides.

A good package is relatively complex, has several components, and its cost can be high compared to that of the object to protect.

The realization of moderated production cost packaging designed to offer optimal protection of the timepiece or jewelery, is therefore a permanent concern of the watchmaking and jewelery manufacturers, especially since the cases or cases are kept throughout the life of the object. It is advisable, also, to respect a certain classicism of presentation, and to propose a purified packaging, and worthy of the object which it contains.

A good solution for the protection problem lies in a double conditioning, with the object enclosed in a first box itself locked in a second. The protection of the object is assured, but the double packaging is expensive, and the user does not immediately access the object.

Housings with hinged covers are also quite expensive solutions.

There are packaging from cartonnages, which meet the need for protection with the choice of a material of sufficient thickness. They also have the advantage of a low cost, and can receive all types of decorations. Fully assembled cartons consume storage space. The advantage of folding cartons is a flat storage, which saves space, combined with a lower cost than fully assembled cartonnages, because of the economy of the assembly labor. But it is often difficult to keep them in the unfolded position, except using tabs or tabs unsightly and deteriorating over time after a number of manipulations, or to make a reduction in the available interior volume to accommodate creases or double partitions, or the like, required by the kinematics of folding and deployment.

A patent application FR 2 678 583 in the name of EDITH HERMAN describes a packaging box forming a display from a single blank with a folding system around a square bottom. This simple box however has bellows occupying part of the interior volume.

A patent application EP 1228 971 in the name of KRAFFT GOEBEL presents a shockproof case where the product to be protected is maintained by Z-flaps with a certain elasticity.

The patent EP 0 489 606 B1 in the name of HRICOVINI EVA describes a family of cardboard boxes closed by partially open tetrahedra folded over the insertion opening of the contents.

A document FR 2 665 881 A1 in the name of RICHEZ NICOLE describes a folding package cooperating with a folding display in the form of two independent parts, which is a usual configuration for a box or jewelery box. The document US 5,873,457 A in the name of MADWED MARK discloses the maintenance of a toric object such as a watch around a cross member inserted in two opposite openings of a box with hinged lid forming a box, this cross member being operated in the manner of a drawer for, depending on the case, secure or free the watch from its case.

A document US2006 / 019801 in the name of JACK HERZOG similarly describes a box hinged lid, comprising a hollow compartment for receiving a watch, this watch being secured or not of the box by a through elastic pin.

In short, there are few low-cost boxes, storable flat, and able to offer good protection to a timepiece or similar, while having a neat aesthetic without protruding or fragile elements.

Summary of the invention

The invention seeks to overcome the disadvantages of known technologies, ensuring quality maintenance in a more economical packaging and with the least possible components. In particular, the invention is designed to hold valuable objects of substantially toroidal shape, and it is very versatile, easy to assemble, and suitable for quality packaging for all types of objects.

Thus, the invention relates to a folding box for the packaging of at least one object or a piece of jewelery or timepieces, said box having a foldable blank which comprises at least one wrapping band extending in a longitudinal direction and mobile between a flat unfolded position in a base plane and a folded position and comprising, on either side of a bottom, two flaps angularly movable relative to said bottom, characterized in that said foldable blank further comprises a foldable structure monobloc, movable between a flat folded position parallel to said base plane and a stable unfolded position, said foldable structure having a base face permanently fixed to said bottom or constituting said bottom, and at least two bearing faces which are arranged for, in said unfolded position of said collapsible structure, each supporting one of said flaps, and further characterized in that said foldable structure is movable in folding, between said flat folded position and said stable unfolded position, around an oblique folding fold with respect to said longitudinal direction, said folding fold constituting an edge of said base face.

According to a characteristic of the invention, said foldable structure comprises, connected to said bearing faces, and alternated with them, an even number of other visible faces constituting, with said bearing faces, a polygonal prism in said unfolded position of said folding structure, and constituting with them a foldable closed band on two parallel levels in said folded flat position of said foldable structure.

According to one characteristic of the invention, said foldable structure comprises, to ensure its stability in its said stable unfolded position, a plurality of polygonal sectors each connected to one of said bearing faces or to one of said visible faces, said polygonal sectors being, in said stable unfolded position, joined edge-to-edge to each other, either by folds or by edges, in ablocage on each other over the thickness of the material of which they are constituted, and so as to constitute together a polygonal surface corresponding to the section of said polygonal prism, and further characterized in that one of said polygonal sectors is said base face and in that one of said folds is said folding fold.

According to one characteristic of the invention, said polygonal prism is square-sectioned, and said polygonal sectors are identical prisms between them of small triangular equilateral triangle section whose hypotenuse each corresponds to a fold junction with a respective face of said foldable structure.

According to one characteristic of the invention, said polygonal sectors are linked two by two by a said fold to form each time, in said stable unfolded position of said foldable structure, a large triangular section prism equilateral rectangle double surface of said small triangles, the two so-called large triangles thus formed abutting one another at said two edges in said unfolded position.

According to a characteristic of the invention, said foldable structure extends, in its said flat folded position parallel to said base plane, in a direction parallel to said longitudinal direction with which said crease fold forms an angle of 45 °.

According to a feature of the invention, said polygonal prism forms the frame of a rectangular parallelepiped whose base is constituted by said bottom and whose cover is constituted by a flap that comprises said wrapping band.

According to one characteristic of the invention, said wrapping band comprises, at its two ends in said longitudinal direction, two closure flaps arranged to be superimposed on one another when said wrapping band is in said position. folded where it surrounds said foldable structure in its said unfolded stable position, said closure flaps having complementary locking means between them to ensure the maintenance of said winding strip in its position wrapped around said foldable structure.

According to a feature of the invention, two opposite faces that comprises said foldable structure each comprise, projecting on their inner face when said foldable structure in its said unfolded stable position, at least a crossbar support, which is arranged to receive a cross member for the reception of a said object, said crossmember having a length equal to the internal spacing of said bearing faces of said crosshead supports; so as to reinforce the retention in said stable unfolded position of said foldable structure.

According to a feature of the invention, at least one said support beam comprises a stop surface arranged to cooperate with one end of a flexible arm attached to the face opposite to that carrying said support cross, so as to maintain said flexible arm in the braced position between said opposite faces in said stable unfolded position of said foldable structure, to prevent the approximation of said faces.

According to one characteristic of the invention, said wrapping band and said one-piece foldable structure are made of cardboard, and that said folds are scored.

Brief description of the drawings

• la figure 1 représente, de façon schématisée et en perspective, un écrin selon l'invention, comportant une bande d'enveloppement représentée dans une position dépliée, sensiblement à plat, en cours de début d'enroulement autour d'une structure pliable qui est dans une position dépliée stable, et qui contient une traverse maintenant une pièce d'horlogerie, ici une montre ;
• la figure 2 représente, de façon schématisée et perspective, l'écrin de la figure 1, complètement plié et refermé, avec la bande d'enveloppement représentée dans une position pliée, entièrement enroulée autour de la structure pliable, avec des volets d'extrémité maintenus fixés l'un sur l'autre;
• la figure 3 représente, de façon schématisée et en vue de face, la bande d'enveloppement en position dépliée à plat ;
• la figure 4 représente, de façon schématisée et en vue de face, une variante de flan permettant la réalisation de la structure pliable, que la figure 5 représente en vue de dessus ;
• la figure 6 représente, de façon schématisée et en vue de face, la structure pliable collée sur elle-même de façon à constituer une bande fermée, représentée pliée à plat et occupant deux niveaux sensiblement parallèles, la figure 7 est une vue de dessus correspondante, et la figure 8 est une vue de dessous correspondante;
• la figure 9 représente, de façon schématisée et en vue de face, l'écrin pliant assemblé dans sa position de stockage, avec la structure pliable pliée et collée à plat sur la bande d'enveloppement dépliée, et la figure 10 est la vue de dessus correspondante;
• la figure 11 représente, de façon schématisée et en vue de dessus, l'écrin assemblé avec la structure pliable entièrement dépliée dans une position dépliée stable sur un fond que comporte la bande d'enveloppement qui est représentée en position dépliée, avant le début de son pliage représenté à la figure 1 ;
• la figure 12 représente, de façon schématisée et parallèlement à des faces que comporte la structure pliable, une étape du déploiement de celle-ci entre les positions illustrées aux figures 9 et 11, et la figure 13 est une vue de dessus correspondante, selon une direction parallèle à ces mêmes faces, tandis que la figure 14 est une vue de bout et de côté correspondante;
• la figure 15 représente, de façon schématisée et en vue de face, une des faces de la structure pliable, vue du côté intérieur quand celle-ci est en position dépliée, cette face étant porteuse d'un appui de traverse saillant vers l'intérieur, avec une surface de réception d'une traverse qui comporte un ergot d'indexage de position angulaire, tandis que la figure 16 représente une variante où le support de traverse est une découpe dans l'épaisseur de la face considérée; la figure 15A illustre une variante d'appui de traverse, avec une surface de continue de réception d'une traverse ;
• la figure 17 représente, de façon schématisée, partielle et selon une section transversale selon le plan AA de la figure 11, une variante où un bras souple, lequel est représenté en trait mixte sur la figure 11, est fixé sur l'une de deux faces opposées, du côté intérieur, et la figure 18 similaire montre ce bras souple arc-bouté en position de maintien sous un appui de traverse que comporte la face opposée de celle sur laquelle il est fixé ;
• la figure 19 illustre, partiellement et de façon similaire à la figure 9, une variante de la structure pliable réalisée à partir du flan de la figure 4, représentée en vue de bout sur la figure 20 avant basculement, en position basculée sur la figure 21 auxquelles correspondent les vues de dessus 22 et de dessous 23, la figure 24 représentant l'écrin fermé en vue de face;
• la figure 25 représente, de façon similaire à la figure 9, une variante où la structure pliable à l'état plié s'étend selon une direction perpendiculaire à celle de la bande d'enveloppement ;
• les figures 26 et 27 représentent, de façon schématisée et en perspective, une variante dans laquelle la structure pliable est, en position dépliée, un prisme de section hexagonale, la figure 26 avec la bande d'enveloppement dépliée et la figure 27 avec la bande d'enveloppement repliée autour de la structure pliable dépliée ;
• la figure 28 représente, de façon schématisée, partielle et en vue de face, le flan pliable à plat correspondant aux figures 26 et 27 ;
• la figure 29 représente, de façon schématisée, en vue de face et à plat, un flan pour la constitution d'une traverse, représentée roulée sur la figure 30.

Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:

• the figure 1 shows schematically and in perspective, a box according to the invention, comprising a wrapping band shown in an unfolded position, substantially flat, being started winding around a foldable structure which is in a position unfolded stable, and which contains a crosspiece now a timepiece, here a watch;
• the figure 2 represents, schematically and perspective, the case of the figure 1 completely folded and closed, with the wrapping band shown in a folded position, fully wrapped around the foldable structure, with end flaps held fixed to one another;
• the figure 3 represents, schematically and in front view, the wrapping band in unfolded flat position;
• the figure 4 represents, schematically and in front view, a variant of blank allowing the realization of the foldable structure, that the figure 5 represents in top view;
• the figure 6 represents schematically and in front view, the foldable structure glued on itself to form a closed band, shown folded flat and occupying two substantially parallel levels, the figure 7 is a corresponding top view, and the figure 8 is a corresponding bottom view;
• the figure 9 represents schematically and in front view, the folding case assembled in its storage position, with foldable structure folded and glued flat on the unfolded wrapping band, and the figure 10 is the corresponding top view;
• the figure 11 represents schematically and in a view from above, the box assembled with foldable structure fully unfolded in a stable unfolded position on a bottom that includes the wrapping band which is shown in the unfolded position, before the beginning of its folding represented to the figure 1 ;
• the figure 12 represents, schematically and parallel to the faces that comprises the foldable structure, a step of the deployment thereof between the positions illustrated in FIGS. figures 9 and 11 , and the figure 13 is a corresponding top view, in a direction parallel to these same faces, while the figure 14 is a corresponding end and side view;
• the figure 15 represents schematically and in front view, one of the faces of the foldable structure, seen from the inner side when the latter is in the unfolded position, this face carrying an inwardly protruding crossbar support, with a receiving surface of a cross member which has an angular position indexing lug, while the figure 16 represents a variant where the cross support is a cut in the thickness of the face considered; the figure 15A illustrates a variant of cross support, with a continuous surface of receiving a cross;
• the figure 17 represents, schematically, partially and in a cross-section along the plane AA of the figure 11 , a variant where a flexible arm, which is represented in dotted line on the figure 11 , is fixed on one of two opposite faces, on the inner side, and the figure 18 similar shows this flexible arm braced in the holding position under a cross support that has the opposite side of the one on which it is fixed;
• the figure 19 illustrates, partially and similarly to the figure 9 , a variant of the folding structure made from the blank of the figure 4 , shown in end view on the figure 20 before tilting, in the tilted position on the figure 21 to which correspond the views from above 22 and from below 23, the figure 24 representing the box closed in front view;
• the figure 25 represents, similarly to the figure 9 a variant where the foldable structure in the folded state extends in a direction perpendicular to that of the wrapping band;
• the Figures 26 and 27 represent, schematically and in perspective, a variant in which the foldable structure is, in unfolded position, a hexagonal section prism, the figure 26 with the wrapping band unfolded and the figure 27 with the wrapping band folded around the unfolded foldable structure;
• the figure 28 represents, schematically, partially and in front view, the foldable blank flat corresponding to Figures 26 and 27 ;
• the figure 29 represents, schematically, in front view and flat, a blank for the constitution of a cross, shown rolled on the figure 30 .

Detailed Description of the Preferred Embodiments

The invention relates to the field of packaging of objects, and more particularly the field of jewel cases, in particular for the field of watchmaking or jewelery. It also relates to packaging for transporting or storing objects, in particular for timepieces or jewelery.

The term "casket" will be used hereinafter interchangeably for a package intended for the sale, handling or storage of these objects.

The invention relates more particularly to objects 10, in particular pieces of jewelery or watches. These objects 10 can be of different geometries, and can be fixed on a support, or enclosed in a chamber, or again, in a particular use of the invention, of so-called toric shape, that is to say objects forming, in the closed state for those with variable geometry, a loop or a torus, and that can be slipped around a support or close around a support. More particularly, and without limitation, the invention is applicable to objects which are wristwatches, or bracelets, or rings. These objects will be generalized below under the name object 10.

Thus, the invention relates to a folding box 1 for at least one object 10, or a piece of jewelery or clockwork or wristwatch or bracelet or ring, preferably for at least one toric object.

The invention is described here more specifically, and in a non-limiting manner, in a thick cardboard embodiment, grooved for the folds, and decorated. This achievement is both economical, solid, and aesthetic. The invention is also feasible in other materials, such as leather or imitation, thin wood, coated textile, metal foil, or metal sandwich compound including aluminum foil, or the like.

This folding case 1 comprises a foldable blank 2. This foldable blank 2 comprises at least one wrapping band 3, which extends in a longitudinal direction D, and which is movable between a flat unfolded position in a basic plane P , and a folded position. This wrapping band 3 comprises, on either side of a bottom 30, two flaps 31, 32, which are angularly movable relative to the bottom 30.

According to the invention, the foldable blank 2 further comprises a foldable structure 4 monobloc, which is movable between a folded position flat parallel to the base plane P, and a stable unfolded position. The figures illustrate indifferently executions with glued legs visible or not. Bonding areas are materialized in the figures by a dotted line.

This foldable structure 4 comprises a base face 40 permanently fixed on the bottom 30 or constituting the bottom 30. It also comprises at least two bearing faces 51, 52, which are arranged for, in the unfolded position of the foldable structure 4, each receiving in support one of the flaps 31, 32 of the wrapping band 3.

According to the invention, the foldable structure 4 is movable in folding, between its flat folded position and its stable unfolded position, around a fold 46 of folding, which is oblique with respect to the longitudinal direction D. This folding crease 46 constitutes an edge of the base face 40.

In a preferred embodiment, and as can be seen in the figures, the foldable structure 4 comprises, related to the bearing faces 51, 52, and alternating with them, a number, preferably even, of other visible faces 53, 50, constituting, with these bearing faces 51, 52, a polygonal prism in the unfolded position of the foldable structure 4. These visible faces 53, 50 constitute, with these bearing faces 51, 52, a foldable closed band on two parallel levels in the flat folded position of the foldable structure 4.

The foldable structure 4 comprises, to ensure its stability in its stable unfolded position, a plurality of polygonal sectors 40, 41, 42, 43, which are each connected to one of the bearing faces 51, 52, or to one of the visible faces 53, 54.

These polygonal sectors are, in the stable unfolded position, joined edge-to-edge to each other, either by folds 46, 47, or by edges 48, 49, in ablocking one over the other over the thickness of the material of which they are constituted, and so as to constitute together a polygonal surface corresponding to the section of the polygonal prism constituted by the faces in the unfolded position of the foldable structure 4.

Advantageously one of these polygonal sectors is the base face 40, and one of the folds is the folding fold 46.

In a preferred and non-limiting embodiment, illustrated by the figures, the polygonal prism is square-sectioned, and the polygonal sectors 40, 41, 42, 43, are then prisms identical to each other in the shape of a small rectangular triangle. equilateral. The hypotenuse of each of these small triangles corresponds to a fold 55, 56, 57, 58, of junction with a respective face 50, 51, 52, 53, of the foldable structure 4.

In the preferred variant, as visible on the Figures 6 to 14 , the polygonal sectors 40, 41, 42, 43 are connected two by two by such a fold 46, 47, to form each time, in the stable unfolded position of the foldable structure 4, a prism of section in large rectangular triangle equilateral double surface of small triangles, the two large triangles thus formed abutting one another at two edges 48, 49 in the unfolded position. We thus see that the small triangles 40 and 41, joined by the fold 46, form such a large triangle, in the same way as the small triangles 42 and 43 joined by the fold 47. The edges 48 and 49 form a diagonal of the square forming the section of the square prism, while the folds 46 and 47 together form the other diagonal. The junction of small triangles between them can be made by gluing, hinge, or similar, small triangles can also result from the folding of a large triangle adequately fixed in space, the two faces that are adjacent to it.

The Figures 12 and 13 show that during the deployment of the foldable structure 4 from the flat folded position to the stable unfolded position, each of the edges 48, 49 consists of two segments, respectively 48A, 48B, and 49A, 49B, which together constitute, projection in the plane of the figure 13 which is perpendicular to all the faces 50, 51, 52, 53 of the unfoldable structure 4, a deformable rhombus, which narrows during the movement of the structure in the direction of the arrow F, which is a combined movement between several rotations .

The point P located at the base of the polygonal prism between the faces 52 and 53 thus passes, during deployment, the position P0 visible on the figure 9 at the position P1, in alignment with the folding fold 46, visible on the figures 1 , 9 and 11 . The polygonal prism also evolves during deployment, with a diamond section that widens until the diamond becomes a square. In this final position, the other deformable rhombus formed by the edges 48 and 49 is reduced to two planar segments in contact with each other.

The different prisms 40, 41, 42, 43 which occupied different angular positions in the space during the deployment, are then all coplanar, and especially to the base face 40 located on the bottom 30, on which these four prisms rest, unlocked one to the other by the thickness of the material, with good stability as the movements printed at the bottom 30 of the case 1 remain in lower angles of 30 ° relative to the horizontal, beyond, the mass of the foldable structure 4 can control the reverse folding movement of the foldable structure 4, when the case 1 is empty. When the box is filled with an object 10, it can be avoided, by placing the center of gravity of this object close enough to the bottom 30, any inadvertent folding movement.

In the variant illustrated in Figures 9 to 13 , preferred because of its smaller footprint in its flat storage state, as visible on the figure 9 , the foldable structure 4 extends, in its folded position flat parallel to the base plane P, in a direction parallel to the longitudinal direction D. Preferably, in the square-section prism embodiment, the folding fold 46 forms an angle of 45 ° with this longitudinal direction D.

Naturally this angle depends on the profile of the section of the polygonal prism formed by the unfolded foldable structure 4: for example, the Figures 26 to 28 illustrate an embodiment where the polygonal prism is of regular hexagonal section, the base face 40 then has the shape of an equilateral triangle. The foldable structure 40 comprises six segments 540, 541, 542, 543, 544, 545, extended respectively by the surfaces 40, 41, 42, 43, 44, 45, and is inclined at 30 ° with respect to the longitudinal direction D.

Advantageously, the polygonal prism forms the frame of a rectangular parallelepiped whose base is constituted by the bottom 30, and whose cover is constituted by a flap 33 that comprises the wrapping band 3. For this purpose, preferably, the faces that comprise the foldable structure 4 together define, in the unfolded position of the foldable structure 4, a flat edge surface 400, which is arranged to serve as a support for such a flap 33 of the wrapping band 3.

In the embodiment illustrated by the figures, the wrapping band 3 comprises at its two ends in the direction longitudinal D, two closure flaps 31 and 34, which are arranged to come superimposed on one another when the wrapping band 3 is in the folded position where it surrounds the foldable structure 4 in its stable unfolded position. The closure flaps 31 and 34 having complementary locking means between them 61 and 62 to ensure the maintenance of the winding strip 3 in its position wrapped around the foldable structure 4.

In a first embodiment visible on the figures 1 and 11 , the complementary locking means between them 61 and 62 are held together by the thickness of the constituent material of the closure flaps 31 and 34, and comprise, on the one hand a mortise 63 or cutting and d on the other hand a post 64 of complementary profile to that of the mortise 63. These complementary locking means 61 and 62 between them can, in an advantageous variant, be made in the form of inserts made of a material resistant to wear, such as plastic material or the like, inserted or embedded in the flaps 31 and 34, or glued on them, or the like. This arrangement is particularly interesting when the foldable blank 2 is made of a material such as cardboard, which dulls with use during repeated clipping during closing operations.

The complementary locking means between them 61 and 62 are illustrated in particular on the figure 1 with a shape profile, in this case a Swiss cross. Of course a simpler form, such as a rectangle, or a circle, can also be retained. A more complex profile may also be appropriate, the only constraint being related to repeated openings and closures, which precludes a priori the use of very sharp profiles that may become dull in time.

In a second embodiment, moreover combinable with the first mode, as can be seen in particular on the figure 1 , the complementary locking means between them 61 and 62 comprise at least one polar mass 65 arranged to cooperate in attraction with a complementary polar mass 66, at least one of the pole mass 65 and mass complementary polar 66 being constituted by a magnet. One can thus oppose a magnet and a magnetically permeable metal mass, or two magnets of opposite polarities.

For maintaining an object 10 in the case 1, in a preferred embodiment according to the figures 9 , 11 and 13 , two opposite faces that comprises the foldable structure 4 each comprise, projecting on their inner face when the foldable structure 4 in its stable unfolded position, at least one crossbar support 9, which is arranged to receive a cross member 8 for the reception of such an object 10. This crossbar 8 then has a length equal to the internal spacing of the carrying faces of the cross supports 9, so as to reinforce the maintenance in the stable unfolded position of the foldable structure 4.

The figure 15A illustrates a projecting inwardly projecting support 9, with a continuous surface 9A for receiving a cross member 8. The figure 15 also shows an inward projecting crossbar support 9, with a receiving surface 9A which has a pin 9B angular position indexing, in the case where the cross member 8 has a cutout 87 for this indexing.

An economic embodiment of the cross member results from the rolling of a blank 86, as visible on the Figures 29 and 30 the blank 86 comprises at least, in alignment in a winding direction R, a flap 81 coming from a cutout 82 here represented in half-moon, and a stop 83 coming from another cutout 84 here represented substantially rectangular or trapezoidal. The blank 86 may comprise several series of stops 84, 84A, ..., to allow a diametral adjustment of the rolled cross member 8 according to the figure 30 the diameter of the object 10 supported by the cross, including a watch: for example, differentiated settings are provided for a child watch, a lady's watch, or a man's watch. For better stability, the blank advantageously comprises, as illustrated, several series of flaps and stops, parallel to the direction R, two in number in the figures. The rolled crosspiece 8 defines a bearing surface 85, which cooperates with a receiving surface 9A, as visible on the figure 15A . The blank 86 may comprise a peripheral cut 87 to cooperate with a lug 9B in the case of the figure 15 .

This blank 86 for cross-cushion use can be, like the case 1 itself, made of different materials, according to the desired aesthetic and cost: cardboard, wood, leather, flexible plastic material, or any rolling material with a radius of curvature compatible with the diameter of a watch or a jewel.

In addition and as visible on the Figures 17 and 18 it is possible to add to these transverse supports 9, called 91 and 92 on two opposite internal faces, a flexible arm 95: at least one such support 9, 92 crosses on the figure 17 , has a stop surface 94 arranged to cooperate with an end 98 of a branch 97 of such a flexible arm 95, which is fixed by a branch 96 to a mounting surface 93 that has the face 91 opposite to the carrier cross support 92, so as to maintain the flexible arm 95 in the abutted position between the opposite faces in the stable unfolded position of the foldable structure 4, to prevent the approximation of the faces. Preferably the attachment surface 93 is defined by the protruding projection formed by the crosshead support 91, as the stop surface 94 is defined by the protruding protrusion formed by the crosspiece support 92.

In a variant, as visible on the figure 16 , two opposite faces that comprises the foldable structure 4 each comprise, aligned when the foldable structure 4 is in its stable unfolded position, at least one cross-member housing cut-out 99, which is arranged to receive a cross-member 8 for the reception of a such object 10, this crosspiece 8 having a length at least equal to the outer spacing of the carrying faces of the cross-member housing cutouts 99.

In a preferred and advantageous manner, the wrapping band 3 and the foldable structure 4 in one piece are made of foldable and / or rollable cardboard, the foldable blank 2 is obtained by gluing, or the like, of the foldable structure 3 on the strip. wrapping, at the base face 40 and the bottom 30, and the folds are scored.

A cardboard embodiment of the box 1 allows a very economical realization, while allowing a wide variety of decorations. Each crosspiece 8 may also be made of cardboard, or in an extruded material, for example polyurethane foam or another polymer, or rubber, or wood, or other.

The foldable blank 2 can also be made of more noble materials, such as leather, or in materials such as rubber or certain plastics, or wood, depending on the characteristics or the style of the piece 10 to be packaged.

Naturally, the wrapping band 3 and the foldable structure 4 can be made of different materials, which allows a wide variety of models.

Claims (15)

Folding case (1) for packaging at least one object (10) or a piece of jewelery or timepieces, said case (1) comprising a foldable blank (2) which comprises at least one wrapping band (3) ) extending in a longitudinal direction (D) and movable between a flat unfolded position in a base plane (P) and a folded position and having, on either side of a bottom (30), two flaps (31; 32) movable angularly with respect to said bottom (30), characterized in that said foldable blank (2) further comprises a foldable structure (4) integral, movable between a flat folded position parallel to said base plane (P) and a stable unfolded position, said foldable structure (4) having a base face (40) permanently attached to said bottom (30) or constituting said bottom (30), and at least two bearing faces (51; ) which are arranged for, in said unfolded position of said collapsible structure (4), each receiving a support ts flaps (31; 32), and further characterized in that said foldable structure (4) is movable in folding, between said flat folded position and said stable unfolded position, around a fold (46) of oblique drawdown with respect to said longitudinal direction (D), said folding fold (46) forming an edge of said base face (40). Folding case (1) according to claim 1, characterized in that said foldable structure (4) comprises, connected to said bearing faces (51; 52), and alternated with them, an even number of other visible faces (53; 50) constituting, with said bearing faces (51; 52), a polygonal prism in said unfolded position of said foldable structure (4), and constituting with them a foldable closed band on two parallel levels in said flat folded position of said foldable structure (4). Folding case (1) according to claim 2, characterized in that said foldable structure (4) comprises, to ensure its stability in said stable unfolded position, a plurality of polygonal sectors (40; 41; 42; one of said bearing faces (51; 52) or at a said visible faces (53; 54), said polygonal sectors being, in said stable unfolded position, joined edge-to-edge to each other either by folds (46; 47) or by edges (48; 49); ablocking one on the other on the thickness of the material of which they are made, and so as to constitute together a polygonal surface corresponding to the section of said polygonal prism, and further characterized in that one of said polygonal sectors is said face base (40) and in that one of said folds is said folding fold (46). Folding case (1) according to claim 3, characterized in that said polygonal prism is square-sectioned, and said polygonal sectors (40; 41; 42; 43) are identical prisms among themselves of equilateral small equilateral triangle section of which the hypotenuse of each corresponds to a fold (55; 56; 57; 58) of junction with a respective face (50; 51; 52; 53) of said foldable structure (4). Folding case (1) according to claim 4, characterized in that said polygonal sectors (40; 41; 42; 43) are connected two by two by a said fold (46; 47) to form each time in said unfolded position stable of said foldable structure (4), a sectional prism in large right angle equilateral triangle double surface of said small triangles, said two so-called large triangles abutting one another at said two edges (48; ) in said unfolded position. Folding case (1) according to one of the preceding claims, characterized in that said foldable structure (4) extends, in its said folded position flat parallel to said base plane (P), in a direction parallel to said direction longitudinal (D) with which said folding fold (46) forms an angle of 45 °. Folding case (1) according to one of claims 2 to 5, characterized in that said polygonal prism forms the frame of a rectangular parallelepiped whose base is constituted by said bottom (30) and whose lid is constituted by a flap (33) that comprises said wrapping band (3). Folding case (1) according to one of the preceding claims, characterized in that said wrapping band (3) comprises, at its two ends in said longitudinal direction (D), two closure flaps (31; 34) arranged for superimposed on each other when said wrapping band (3) is in said folded position where it surrounds said foldable structure (4) in said stable unfolded position, said closure flaps (31; 34) comprising complementary locking means between them (61; 62) for maintaining said winding strip (3) in its position wrapped around said foldable structure (4). Folding case (1) according to one of the preceding claims, characterized in that said faces which comprises said foldable structure (4) together define, in said unfolded position of said foldable structure (4), a flat edge surface (400) arranged to support a flap (33) included in said wrapping band (3). Folding case (1) according to one of the preceding claims, characterized in that two opposite faces that comprises said foldable structure (4) each comprise, projecting on their inner face when said foldable structure (4) in its said unfolded stable position, at least one crossbar support (9), which is arranged to receive a cross member (8) for receiving an said object (10), said crossbar (8) having a length equal to the internal spacing of said carrier faces of said cross support (9) so as to reinforce the holding in said stable unfolded position of said foldable structure (4). Folding case (1) according to the preceding claim, characterized in that at least one said support beam (9) has a stop surface (94) arranged to cooperate with an end (98) of a flexible arm (95) attached to the face opposite to that carrying said cross support (9), so as to maintain said flexible arm in an end-to-end position between said opposite faces in said stable unfolded position of said collapsible structure (4), to prevent the reconciliation of said faces. Folding case (1) according to one of claims 1 to 9, characterized in that two opposite faces that comprises said foldable structure (4) each comprise, aligned when said foldable structure (4) is in its said unfolded position stable, at at least one crosspiece housing cutout (99), which is arranged to receive a crosspiece (8) for receiving a said object (10), said crossbar (8) having a length at least equal to the outer spacing of said carrying faces of said transom housing cutouts (99). Folding case (1) according to claim 8, characterized in that said complementary locking means between them (61; 62) are held together by the thickness of the constituent material of said closure flaps (31; ), and comprise, on the one hand a mortise (63) or cut and on the other hand a post (64) of profile complementary to that of said mortise (63). Folding case (1) according to claim 8, characterized in that said complementary locking means (61; 62) comprise at least one polar mass (65) arranged to cooperate in attraction with a complementary polar mass (66), at least one of said polar mass (65) and complementary polar mass (66) being constituted by a magnet. Folding case (1) according to one of the preceding claims, characterized in that said wrapping band (3) and said foldable structure (4) monobloc are made of cardboard, and that said folds are scored.

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