Device provided with an invisible hinge

Abstract

The invention relates to a device (2) comprising two elements (4, 6) and a hinge, the hinge connecting the two elements (4, 6) at an axis of rotation (A-A1), each element (4, 6) being provided with a bottom (10) and a side wall (12) surrounding the bottom (10), the hinge comprising at least one longitudinal strand (16) and at least one member (18) for blocking one end of the longitudinal strand (16) within the side wall (12) of one of the elements (4, 6), wherein each of the elements (4, 6) is provided with at least one channel (20) for receiving a longitudinal strand (16) formed in the side wall (12) of the element (4, 6), each channel (20) leading out to at least one opening (24), the side wall (12) of at least one of the elements (4, 6) comprising an inner cavity (22) for accommodating the blocking member (18).

Description

Description Title of the invention: Device provided with an invisible hinge

[0001] The invention relates to a device comprising two elements and a hinge, the two elements being mounted to pivot relative to each other around an axis of rotation, the hinge connecting the two elements at said axis of rotation. The device is typically, but not limited to, a jewelry box or a watch receiving box. The invention also relates to a method of manufacturing a device according to the invention. Technical field

[0002] The invention relates to the field of devices provided with a hinge. Previous Art

[0003] Devices such as jewelry boxes (jewelry case type) or watch receiving boxes are known, comprising two elements mounted to pivot relative to each other around an axis of rotation, by means of a hinge.

[0004] US patent document 6,513,672 B1 describes, for example, such a jewelry box. The jewelry box comprises a base and a lid pivotally mounted on the base by means of a spring hinge. The jewelry box also comprises a fabric insert inserted within the jewelry box, and held and held in place by the particular configuration of the base and the lid. The jewelry box described in this patent document is thus covered with fabric without any glue, which allows easy recycling of the various parts composing the box. The fabric insert then covers the inside of the base and the lid, as well as the hinge, which makes the latter almost invisible from the outside. However, although the spring hinge is almost invisible from the outside, such a hinge is relatively bulky, which detracts from the overall aesthetics of the product and makes the hinge visible from the inside of the latter.Furthermore, since such a hinge is made of a metallic material, the presence of the latter in the jewelry box adds a metallic component to the whole, which is detrimental to the production cost and the recyclability of the whole due to the diversity of materials used.

[0005] There is therefore a need for a device (such as, for example, a jewelry box or a watch box) comprising two elements and a hinge connecting the two elements by pivoting, the hinge of which is completely invisible from both the outside and the inside of the product, and which allows easy recycling. Description of the invention

[0006] The present invention aims to resolve all or part of the drawbacks of the state of the art cited above.

[0007] Thus, according to a first aspect, the invention relates to a device comprising two elements and a hinge, the two elements being mounted to pivot relative to each other around an axis of rotation, the hinge connecting the two elements at the level of said axis of rotation, each element being provided with a bottom and a side wall surrounding the bottom.

[0008] According to the invention, the hinge comprises at least one longitudinal strand and at least one member for locking one end of the longitudinal strand within the side wall of one of the elements, and each of the elements is provided with at least one channel for the passage of a longitudinal strand, said channel being provided in the side wall of said element, each channel opening onto at least one opening provided on a face of the side wall of the corresponding element arranged along said axis of rotation, the side wall of at least one of the elements comprising an internal housing for receiving said locking member.

[0009] The combination of a hinge configured in this way and the presence of such channels in each of the elements provides a device whose hinge is completely invisible both from the outside and from the inside of the product. The hinge is also free of any metallic material and allows for easy recycling of the device because it is advantageously made of a material similar or equivalent to that used for the elements. The longitudinal strands can also be easily removed from the channels in which they are inserted by acting on the locking members, allowing the two elements to be separated from each other. The disassembly (or separability) of the components thus obtained then contributes to the recyclability of the device.

[0010] According to a first embodiment variant, the hinge comprises at least two longitudinal strands, at least two members for locking one end of a longitudinal strand, and at least two internal housings for receiving a locking member, each longitudinal strand consisting of a clamping collar, each member for locking one end of a clamping collar consisting of a clamping collar head, each of the elements being provided with at least two channels for the passage of a clamping collar formed in the side wall of said element.

[0011] The presence of at least two clamps within the hinge gives it optimal rigidity. Preferably, the hinge is made up of at least three clamps.

[0012] According to an embodiment of this first variant, each channel of an element opens on the one hand onto said face of the side wall of the element arranged along said axis of rotation, via a first opening, and on the other hand onto an internal face of the side wall of the element, via a second opening, each internal housing for receiving a locking member being formed within one of said second openings of an element, each clamping collar extending within a respective channel of each of the two elements, and being fixed by one of its ends within one of said second openings of a first element, and by its other end within one of said clamping collar heads arranged in one of the internal housings of the second element.

[0013] According to an embodiment of this first variant, each passage channel of a clamping collar forms a well or a groove.

[0014] Preferably, each passage channel of a clamping collar has a longitudinal section in the shape of a “J”. By “longitudinal section” is meant according to the invention a section created by a plane perpendicular to the axis of rotation of the hinge and intersecting the channel along its longest axis.

[0015] The two elements of the device according to this first embodiment variant are, for example, box frames made of an injected polymer material, typically a thermoplastic material. Advantageously, each clamp and each clamp head is made of the same polymer material as that used for the frames. This further improves the recyclability of the device.

[0016] According to a second embodiment variant, said at least one longitudinal strand consists of a wire, and said at least one locking member of one end of the longitudinal strand consists of a bead, said bead being pierced with a light for the passage of the wire, an end portion of the wire being wound around the bead, said internal housing for receiving the locking member being configured to frictionally tighten said end portion of the wire against the locking member, allowing the end of the wire to be locked in the housing.

[0017] According to an embodiment of this second variant, the or each bead is provided with an imprint capable of cooperating with a tool head intended to rotate the bead on itself within the receiving housing, said imprint extending in a direction substantially perpendicular to the direction of extension of the light through the bead. According to a particular exemplary embodiment, the imprint is a slot.

[0018] According to an embodiment of this second variant, each channel for the passage of a wire forms an open groove.

[0019] Preferably, each groove is semi-cylindrical. More preferably, each groove has a “U” shaped cross-section. By “cross-section” is meant according to the invention a section created by a plane cutting the groove perpendicular to its longest axis.

[0020] According to an embodiment of this second variant, the hinge comprises a wire, two beads for locking a respective end of the wire, and two internal housings for receiving a bead, a first element being provided in its side wall with a channel for the passage of the wire opening into two separate openings provided on the same face of the side wall arranged along said axis of rotation, a second element being provided in its side wall with a first channel for the passage of the wire opening on the one hand onto a first internal housing for receiving a first bead and on the other hand onto a face of the side wall arranged along said axis of rotation, and with a second channel for the passage of the wire opening on the one hand onto a second internal housing for receiving a second bead and on the other hand onto a face of the side wall arranged along said axis of rotation, the wire passing respectively into the first channel of the second element, into the channel of the first element then into the second channel of the second element.This embodiment allows only one wire to be used to form the hinge, thus saving material and labor time and thus reducing costs.

[0021] Preferably, the second element, the first wire passage channel and the second wire passage channel are substantially rectilinear and extend in respective directions forming an angle between them of between 60 degrees and 120 degrees, preferably substantially equal to 90 degrees. This makes it possible to give optimal rigidity to the hinge, while using only a single wire to form the latter.

[0022] Preferably, the or each wire is made of polyamide. Such a material ensures a good compromise between rigidity and flexibility for the hinge, while allowing easy insertion of each of the wires into the corresponding channels of the elements without compromising the recyclability of the wood or equivalent material used for the elements.

[0023] The two elements of the device according to this second embodiment are, for example, box frames made of a reinforced cardboard material or a wooden panel incorporating wood fibers within a resin. Advantageously, each locking bead is made of a solid and inexpensive wood, such as beech. This further improves the recyclability of the device.

[0024] According to one embodiment, the two elements of the device are identical.

[0025] According to one embodiment, the device is a jewelry box or a watch receiving box, each of the two elements of the device being a box frame.

[0026] According to a second aspect, the invention relates to a method of manufacturing a device comprising two elements and a hinge connecting the two elements in pivoting around an axis of rotation.

[0027] According to one embodiment, said manufacturing method comprises the steps of: i. providing said two elements, at least one longitudinal strand and at least one locking member for one end of the longitudinal strand, each element being provided with a bottom and a side wall surrounding the bottom, each of the elements being provided in its side wall with at least one channel for the passage of a longitudinal strand, each channel opening onto at least one opening provided on a face of the side wall of the corresponding element arranged along said axis of rotation, said at least one locking member being received in an internal housing provided in the side wall of one of the elements; ii. sheathing the exterior of each of the two elements using a coating, each coating covering said face of the side wall of the corresponding element; iii. drilling at least two orifices in each of the coatings, each orifice extending opposite one of the openings provided on said face of the side wall of the corresponding element. iv.inserting said at least one longitudinal strand through one of the orifices of each of the coverings, then into the opposite opening provided on said face of the side wall of at least one of the elements, until the or each free end of said at least one longitudinal strand reaches the locking member of one end of the longitudinal strand, said at least one longitudinal strand forming said hinge and extending within at least one respective channel of each of the two elements.

[0028] Preferably, the manufacturing method further comprises a step of locking in position at least one end of said at least one longitudinal strand by action on said at least one locking member. Figures

[0029] [Fig 1] is an axonometric view of a device according to a first variant embodiment of the invention, the device comprising two elements mounted to pivot via a hinge, the device being in the closed configuration.

[0030] [Fig 2] is an axonometric view of the device of Figure 1, the device being in the open configuration.

[0031] [Fig 3] is an exploded axonometric view of the device of Figure 1.

[0032] [Fig 4] is a longitudinal sectional view of the device of Figure 1, taken along section plane IV-IV

[0033] [Fig 5] is a partial axonometric view of the device of Figure 1, cut along section plane IV-IV.

[0034] [Fig 6] is an axonometric view of a device according to a second variant embodiment of the invention, the device comprising two elements mounted to pivot via a hinge, the device being in configuration closed.

[0035] [Fig 7] is an axonometric view of the device of Figure 6, the device being in the open configuration.

[0036] [Fig 8] is an exploded axonometric view of the device of Figure 6.

[0037] [Fig 9] is a longitudinal sectional view of the device of Figure 6, taken along section plane IX-IX.

[0038] [Fig 10] is a partial axonometric view of the device of Figure 6, cut along section plane IX-IX. Definitions

[0039] According to the invention, the term "longitudinal strand" means any element extending in a main direction of extension (such as, for example, a collar, a wire, or a band) and whose length is substantially greater than each of its other dimensions considered individually, the length being measured in said main direction of extension.

[0040] According to the invention, the term "member for locking one end of a longitudinal strand" means any element capable of locking the end of a longitudinal strand according to at least one degree of freedom.

[0041] The terms "horizontal", "vertical", "lower", "upper", "top", "bottom", "side" are defined in relation to the orientation of the device according to the invention. In particular, in this application, the term "vertical" designates an orientation perpendicular to the horizon while the term "horizontal" designates an orientation parallel to the horizon. The terms "longitudinal" or "transverse" are defined in relation to the extension dimensions of each longitudinal strand, the term "transverse" designating a direction perpendicular to the main direction of extension of each longitudinal strand. Detailed description of the invention

[0042] Figures 1 to 5 show a device 2 according to a first embodiment of the invention. The device 2 comprises two elements 4, 6 and a hinge 8 connecting the two elements at an axis of rotation A- A'. The axis of rotation A- A is a horizontal axis when the device 2 is placed on a flat horizontal surface. The two elements 4, 6 are mounted to pivot relative to each other about the pivot axis A- A'. The device 2 thus has an open configuration (shown in Figure 2), in which the two elements 4, 6 are spaced apart from each other, and a closed configuration (shown in Figure 1), in which the two elements 4, 6 are in contact with each other.

[0043] The device 2 is for example a jewelry box or a watch receiving box (not shown in the figures), each of the two elements 4, 6 being a carcass of the box 2. The box 2 then comprises a lower carcass 4 and an upper carcass 6, the upper carcass 6 forming a cover for the box 2, the lower carcass 4 forming a base intended to rest against a flat surface such as the surface of a table or a piece of furniture for example. In the particular embodiment shown in Figures 1 to 5, each carcass 4, 6 is preferably made of an injected polymer material, typically a thermoplastic material.

[0044] Each element 4, 6 is provided with a bottom 10 and a side wall 12 surrounding the bottom 10. Preferably, and as illustrated in Figures 2 and 3, each side wall 12 forms a continuous surface delimiting the bottom 10 and defining with the latter an interior housing 14. More preferably, and as visible in Figure 3, the device 2 also comprises two coverings 9A, 9B each intended to cover the external faces (in other words the faces located outside the housing 14) of the bottom 10 and the side wall 12 of a respective element 4, 6. The internal faces (in other words the faces located inside the housing 14) of the bottom 10 and the side wall 12 of each element 4, 6 can also be sheathed by being coated with a piece of material or an insert (not shown in the figures), for example made of fabric.

[0045] The hinge 8 comprises four longitudinal strands 16 and four members 18 for locking one end of a longitudinal strand 16 within the side wall 12 of the lower element 4. In a variant not shown, the locking members 18 could be provided in the side wall 12 of the upper element 6. Each longitudinal strand 16 is in the form of a clamping collar, and each member 18 for locking one end of a longitudinal strand 16 is in the form of a clamping collar head. Advantageously, each clamping collar 16 and each clamping collar head 18 is made of the same polymer material as that used for the frames 4, 6.

[0046] As illustrated in Figure 3, the side wall 12 of each element 4, 6 is provided with four channels 20 for the passage of a longitudinal strand 16. The side wall 12 of one of the elements 4, 6, in this case the lower element 4 in the embodiment shown in Figures 1 to 5, is further provided with four internal housings 22 for receiving a locking member 18 (the internal housings 22 being particularly visible in Figures 3 to 5).

[0047] As illustrated in Figures 3 to 5, each channel 20 opens on the one hand onto a first opening 24 formed on a face 26 of the side wall 12 of the corresponding element 4, 6, which face 26 is arranged along the axis of rotation AA. In the particular embodiment of Figures 1 to 5, each face 26 forms a rectilinear edge belonging to the continuous rim 27 of the side wall 12 of the corresponding element 4, 6, and is intended to come into contact with the face 26 of the side wall 12 of the other element 4, 6 when the device 2 is in its closed configuration. Each channel 20 opens on the other hand on a second opening 28 formed on an internal face of the side wall 12 of the corresponding element 4, 6. Each internal housing 22 for receiving a locking member 18 is formed in one of the second openings 28 of one of the elements 4, 6 (in this case of the lower element 4 in the exemplary embodiment shown in figures 1 to 5).

[0048] As shown in Figures 2 to 5, each longitudinal strand 16 is thus fixed at one of its ends in a second opening 28 of the upper element 6, passes into one of the channels 20 of the upper element 6, emerges through a first opening 24 of the upper element 6 (and thus passes through the coating 9B of the upper element 6, which covers in particular the corresponding face 26), enters the lower element 4 through one of its first openings 24 (and thus passes through the coating 9A of the lower element 4, which covers in particular the corresponding face 26), passes into the corresponding channel 20 of the lower element 4, then arrives in one of the internal housings 22 of the lower element 4 and comes to be fixed at its other end by means of one of the locking members 18 (more precisely by tightening, by insertion of the end of the clamping collar 16 into the clamping collar head 18).

[0049] In the particular embodiment shown in Figures 1 to 5, each channel 20 for the passage of a clamping collar 16 forms a (closed) well. In a variant not shown, each channel 20 for the passage of a clamping collar 16 can form a groove.

[0050] Preferably, and as seen in particular in Figures 2 to 5, each channel 20 for the passage of a clamping collar 16 has a longitudinal section in the shape of a “J”, the top of the “J” opening onto a first opening 24, the leg of the “J” opening onto a second opening 28.

[0051] Figures 6 to 10 show a device 32 according to a second embodiment of the invention. Subsequently, the elements identified with the same numerical references as those used for elements of the first embodiment are identical or analogous to these elements and will therefore not be described in more detail.

[0052] The device 32 comprises two elements 4, 6 and a hinge 8 connecting the two elements at an axis of rotation A- A'. The two elements 4, 6 are mounted to pivot relative to each other around the pivot axis A- A'.

[0053] The device 32 is for example a jewelry box or a watch receiving box (not shown in the figures), each of the two elements 4, 6 being a carcass of the box 2. In the particular embodiment shown in figures 6 to 10, each carcass 4, 6 is in the shape of a rectangular parallelepiped and is preferably made of a reinforced cardboard material or a wooden panel incorporating wood fibers within of a resin.

[0054] Each element 4, 6 is provided with a bottom 10 and a side wall 34 surrounding the bottom 10. Preferably, and as illustrated in FIG. 7, each side wall 34 forms a continuous surface delimiting the bottom 10 and defining with the latter an interior housing 14. More preferably, and as visible in FIG. 8, the device 32 also comprises two coverings 9A, 9B each intended to cover the external faces (in other words the faces located outside the housing 14) of the bottom 10 and the side wall 34 of a respective element 4, 6. The internal faces (in other words the faces located inside the housing 14) of the bottom 10 and the side wall 34 of each element 4, 6 may also be sheathed by being coated with a piece of material or an insert (not shown in the figures), for example made of fabric.It should also be noted in Figure 8 that the side wall 34 of each element 4, 6 is typically made up of four panels 34A-34D made of reinforced cardboard or wood panel incorporating wood fibers within a resin, the four panels 34A-34D being assembled or glued together in the form of two pairs of similar panels at right angles, in order to form the side wall 34 (in the shape of a substantially rectangular parallelepiped).

[0055] The hinge 8 comprises a longitudinal strand 36 and two members 38 for locking a respective end of the longitudinal strand 36 within the side wall 34 of the lower element 4. In a variant not shown, the locking members 38 could be provided on the side wall 34 of the upper element 6.

[0056] The longitudinal strand 36 is in the form of a wire (typically made of polyamide), and each member 38 for locking one end of the longitudinal strand 36 is in the form of a bead pierced with a slot 40 (or through hole) for the passage of the wire 36. Advantageously, each locking bead 38 is made of solid, inexpensive wood, of the beech type.

[0057] As shown in Figures 8 to 10, each end of the wire 36 passes through the slot 40 of one of the locking beads 38, then winds around this bead 38, so that a corresponding end portion of the wire 36 is wound around the bead 38. Preferably, as illustrated in Figures 8 and 10, each locking bead 38 is also provided with an imprint 41 (typically a slot) capable of cooperating with a tool head (not shown in the figures) intended to rotate the bead 38 on itself within a receiving housing 22. An operator equipped with such a tool can then easily tighten or loosen the bead 38, making it possible to lock the wire 36 in the housing 22 or, on the contrary, to release the wire 36 from the bead 38. The imprint 41 is for example of a rectilinear shape and typically extends in a direction substantially perpendicular to the direction extending the light 40 through the corresponding bead 38.

[0058] As illustrated in Figure 8, the side wall 34 of the lower element 4 is provided with two channels 42 for the passage of the longitudinal strand 36, and the side wall 34 of the upper element 6 is provided with a single channel 44 for the passage of the longitudinal strand 36. The side wall 12 of one of the elements 4, 6, in this case the lower element 4 in the embodiment shown in Figures 6 to 10, is further provided with two internal housings 22 for receiving a locking member 38 (the internal housings 22 being particularly visible in Figures 8 to 10).

[0059] As visible in Figures 8 to 10, each channel 42 opens on the one hand onto a first opening 24 formed on a face 26 of the side wall 34 of the lower element 4, which face 26 is arranged along the axis of rotation A-A'. In the particular embodiment of Figures 6 to 10, the face 26 forms a rectilinear edge belonging to the continuous rim 27 of the side wall 34 of the lower element 4, and is intended to come into contact with the face 26 of the side wall 34 of the upper element 6 when the device 2 is in its closed configuration. Each channel 42 opens on the other hand onto a second opening 28 formed on an internal face of the side wall 34 of the lower element 4. Each internal housing 22 for receiving a locking bead 38 is formed in one of the second openings 28 of the lower element 4.Each bead 38 is thus inserted into one of the internal housings 22, the beads 38 and the housings 22 being in correspondence of shape (for example circular). Each internal housing 22 is configured to tighten by friction, against the locking bead 38, the end portion of the wire 36 which is wound around this bead 38, allowing the locking of the end of the wire 36 in the housing 22. Preferably, the two channels 42 are substantially rectilinear and extend in respective directions forming an angle α between them of between 60 degrees and 120 degrees, preferably substantially equal to 90 degrees.

[0060] As illustrated in Figure 8, the channel 44 opens onto two first distinct openings 24 arranged on the same face 26 of the side wall 34 of the upper part 6, which face 26 is arranged along the axis of rotation A-A'. In the particular embodiment of Figures 6 to 10, the channel 44 has, for example, an arcuate shape.

[0061] As shown in Figures 8 to 10, the longitudinal strand 36 is thus fixed at one of its ends in one of the internal housings 22 of the lower element 4 (by winding around one of the locking beads 38), passes into one of the channels 42 of the lower element 4, emerges through a first opening 24 of the lower element 4 (and thus passes through the coating 9A of the lower element 4, which notably covers the corresponding face 26), enters the upper element 6 through one of its first openings 24 (and thus passes through the coating 9B of the upper element 6, which notably covers the corresponding face 26), passes into the channel 44 of the upper element 4, emerges from this channel 44 through the other first opening 24 of the upper element 6 (and thus passes once again through the covering 9B of the upper element 6), enters the lower element 4 through the other first opening 24 of this element 4 (and thus passes once again through the covering 9A of the lower element 4), passes into the other channel 42 of the lower element 4, then arrives in the other internal housing 22 of the lower element 4 and comes to be fixed at its other end by means of the other locking bead 38 (more precisely by friction tightening, by winding around the locking bead 38).

[0062] In the particular embodiment shown in Figures 6 to 10, each channel 42, 44 for the passage of the wire 36 forms an open groove. Preferably, each groove 42, 44 is semi-cylindrical. More preferably, each groove 42, 44 has a “U” shaped cross section. In a variant not shown, each channel 42, 44 for the passage of the wire 36 can form a (closed) well.

[0063] According to an alternative embodiment of the invention (not shown in the figures), the hinge 8 may comprise several longitudinal strands 36 in the form of wires, and several locking beads 38, according to different arrangements and different configurations (with for example one or two locking beads 38 for each wire 36, as well as a varied number of passage channels 40 as well as different shapes for these passage channels 40).

[0064] The method of manufacturing the device 2, 32 according to the first or second variant embodiment of the invention will now be described.

[0065] During a first step, each element 4, 6 is sheathed using one of the coatings 9A, 9B. In other words, each coating 9A, 9B is arranged so as to cover the external faces (in other words the faces situated outside the housing 14) of the bottom 10 and the side wall 12, 34 of a respective element 4, 6. Each coating 9A, 9B also covers the continuous rim 27 of each element 4, 6, and therefore the face 26 of the side wall 12, 34 of each element 4, 6 intended to be arranged along the axis of rotation A-A'.

[0066] In a subsequent step, at least two orifices are drilled in each of the coatings 9A, 9B (such orifices not being shown in the figures for reasons of clarity). For each coating 9A, 9B, as many orifices are drilled in the coating as there are first openings 24 in the corresponding element 4, 6. Each orifice drilled in one of the coatings 9A, 9B is designed to extend opposite one of the first openings 24 provided on the face 26 of the side wall 12, 34 of the corresponding element 4, 6 intended to be arranged along the axis of rotation AA.

[0067] During a following step, the or each longitudinal strand 16, 36 is inserted through one of the orifices of each of the coverings 9A, 9B, then into the first opening 24 opposite provided on the face 26 of the side wall 12, 34 of each corresponding element 4, 6 (or only in the first opening 24 opposite the lower element 4 in the context of the first variant embodiment of the invention). This insertion is then carried out in the channels 20, 42, 44 until the or each free end of the or each longitudinal strand 16, 36 reaches one of the locking members 18, 38. At the end of this step, the hinge 8 is formed, consisting of the or each longitudinal strand 16, 36 associated with the locking members 18, 38.

[0068] During a final step, at least one end of the or each longitudinal strand 16; 36 is blocked in one of the blocking members 18, 38, by action on this blocking member 18; 38 (tightening the end of the collar 16 in the head 18 in the first embodiment; screwing the bead 38 onto itself to tighten the end portion of the wire 36 in the second embodiment).

Claims

Claims

1. Device (2; 32) comprising two elements (4, 6) and a hinge (8), the two elements (4, 6) being mounted to pivot relative to each other about an axis of rotation (A-A'), the hinge (8) connecting the two elements (4, 6) at the level of said axis of rotation (AA), each element (4, 6) being provided with a bottom (10) and a side wall (12; 34) surrounding the bottom (10), the hinge (8) comprising at least one longitudinal strand (16; 36) and at least one member (18; 38) for locking one end of the longitudinal strand (16; 36) within the side wall (12; 34) of one of the elements (4, 6), and each of the elements (4, 6) being provided with at least one channel (20; 42, 44) for the passage of a strand longitudinal (16; 36), said channel (20; 42, 44) being provided in the side wall (12; 34) of said element (4, 6), each channel (20; 42, 44) opening onto at least one opening (24) provided on a face (26) of the side wall (12;34) of the corresponding element (4, 6) arranged along said axis of rotation (AA), the side wall (12; 34) of at least one of the elements (4, 6) comprising an internal housing (22) for receiving said locking member (18; 38), characterized in that the hinge (8) comprises at least two longitudinal strands (16), at least two members (18) for locking one end of a longitudinal strand (16), and at least two internal housings (22) for receiving a locking member (18), each longitudinal strand (16) consisting of a clamping collar, each member (18) for locking one end of a clamping collar (16) consisting of a clamping collar head, each of the elements (4, 6) being provided with at least two channels (20) for the passage of a clamping collar (16) formed in the side wall (12) of said element (4, 6).;

2. Device (2) according to claim 1, in which each channel (20) of an element (4, 6) opens on the one hand onto said face (26) of the side wall (12) of the element (4, 6) arranged along said axis of rotation (AA), via a first opening (24), and on the other hand onto an internal face of the side wall (12) of the element (4, 6), via a second opening (28), each internal housing (22) for receiving a locking member (18) being formed within one of said second openings (28) of an element (4, 6), each clamping collar (16) extending within a respective channel (20) of each of the two elements (4, 6), and being fixed by one of its ends within one of said second openings (28) of a first element (6), and by its other end within one of said clamp heads (18) arranged in one of the internal housings (22) of the second element (4).

3. Device (2) according to claim 1 or 2, in which each channel (20) for passage of a clamping collar (16) forms a well or a groove.

4. Device (2; 32) according to any one of the preceding claims, in which the device (2; 32) is a jewelry box or a watch receiving box, each of the two elements (4, 6) of the device (2; 32) being a box frame.

5. A method of manufacturing a device (2; 32) comprising two elements (4, 6) and a hinge (8) connecting the two elements (4, 6) in pivoting about an axis of rotation (A-A'), the method comprising the steps of: i.providing said two elements (4, 6), at least one longitudinal strand (16; 36) and at least one member (18: 38) for locking one end of the longitudinal strand (16; 36), each element (4, 6) being provided with a bottom (10) and a side wall (12; 34) surrounding the bottom (10), each of the elements (4, 6) being provided in its side wall (12; 34) with at least one channel (20; 42, 44) for the passage of a longitudinal strand (16; 36), each channel (20; 42, 44) opening onto at least one opening (24) provided on a face (26) of the side wall (12; 34) of the corresponding element (4, 6) arranged along said axis of rotation (A-A'), said at least one locking member (18: 38) being received in an internal housing (22) provided in the side wall (12; 34) of one of the elements (4, 6); ii.sheathing the exterior of each of the two elements (4, 6) using a coating (9A, 9B), each coating (9A, 9B) covering said face (26) of the side wall (12; 34) of the corresponding element (4, 6); iii. drilling at least two orifices in each of the coatings (9A, 9B), each orifice extending opposite one of the openings (24) provided on said face (26) of the side wall (12; 34) of the corresponding element (4, 6). iv. inserting said at least one longitudinal strand (16; 36) through one of the orifices of each of the coatings (9A,. 9B), then into the opening (24) opposite provided on said face (26) of the side wall (12; 34) of at least one of the elements (4, 6), until the or each free end of said at least one longitudinal strand (16; 36) reaches the member (18; 38) for locking one end of the longitudinal strand (16; 36), said at least one longitudinal strand (16; 36) forming said hinge (8) and extending within at least one respective channel (20; 42, 44) of each of the two elements (4, 6).

6. Manufacturing method according to the preceding claim, in which the method further comprises the step of: i. locking in position at least one end of said at least one longitudinal strand (16; 36) by action on said at least one locking member (18; 38).

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