FR3019862A1 - SYSTEM FOR ASSEMBLING PANELS FOLLOWING A DIEDRE FOR MAKING A FURNITURE AND FURNITURE SO PRODUCED - Google Patents

Abstract

Assembly system of two panels (1, 2) for making a dihedral assembly of a cabinet comprising: - a first panel (1) provided with an undercut groove (14) having with a window (142) following the assembly line (LA) and opening at one end (14e) to the edge of the panel, - a second panel intended to be joined by its edge (23) to the first panel (1) along the assembly line (LA ), having at least one bore (24) opening into its edge (23), - an assembly key (3) formed of a cylindrical sole (31) carrying two pins (32). The sole (31) has a section complementary to that of the groove (14) and each pin (32) protrudes into the bore (24) when the key (3) is slid into the groove (14).

Description

FIELD OF THE INVENTION The subject of the present invention is a system for assembling two panels to form a dihedral assembly of the two panels to form a piece of furniture or a piece of furniture, in particular a small piece of furniture such as a room furniture. bath, these different terms being synonymous in the sense of the present invention. Such an assembly of two panels is known by the name of assembly "flat joint". Such an assembly consists of joining two panels generally rectangular by assembling the edge of one of the panels against the face and not the edge of the other panel. This type of flat-joint assembly that is to say at right angles is either glued or reinforced by trunnions, a glued joint with a corner reinforcement or slats or, more complicated way with a dovetail assembly. Such panel assemblies are used to make "box" or drawer type boxes. The assembly is then in this manner along the four edges of the box or the drawer. But such a flat-jointed assembly can also be envisaged for box shapes other than parallel parallelepipedic boxes such as for example a hexagonal box and in this case the edge of one of the panels is inclined at an angle different from 90 °. But such assemblies are made by a non-specialized buyer. STATE OF THE ART There are many types of assembly for furniture elements, especially for relatively bulky furniture such as bed cases or cabinets. This type of furniture, made to be disassembled, generally consists of side walls, a bottom and a top and a bottom, either in a vertical position for a cabinet or in a horizontal position for a box of bed. The parts are provided near their edge, mechanical connecting elements which are then connected by devices such as bolts or screw heads or by a cam connection to tighten the assembly. But this type of connection is relatively expensive and is not suitable for the realization of small furniture such as boxes or drawers or other pieces of furniture of this type.

For this type of box, it is known to use assemblies by dowels or lamellae. But these assemblies are relatively difficult to achieve for a non-specialist and moreover these assemblies require glue and equipment such as clamps to maintain the assembled element.

OBJECT OF THE INVENTION The object of the present invention is to develop a system for assembling panels along a dihedron to produce a piece of furniture and which can be done simply without tools and without the risk of incorrect assembly or faulty assemblies.

DESCRIPTION AND ADVANTAGES OF THE INVENTION To this end, the subject of the invention is a system for assembling two panels for making a dihedral assembly of a piece of furniture comprising a first panel provided with an undercut groove with a groove. opening along the assembly line and opening at least at one end (edge of the panel), a second panel intended to be joined by its edge to the first panel following the assembly line, having at least one hole opening into its edge, an assembly key formed of a soleplate carrying at least one pin, the sole having a section complementary to that of the groove and each pin projecting from the groove through the opening of the groove to accommodate the drilling of the edge of the second panel when the key is slid into the groove and a translation lock blocking the translation of one panel relative to the other in the direction of the assembly line.

The notion of cylindrical shape of both the sole and the key or pins of the key is to be taken in the geometric sense of the term. In the case of the pins, it is a cylindrical shape of circular section; in the case of the sole, it is a cylindrical shape of undercut section, for example in the form of inverted large V or inverted T or a circular section.

The assembly system according to the invention has the advantage of being able to be realized in an extremely simple manner by placing the assembly keys by sliding them in the two straight grooves of a panel and then setting up the other panel pins forming pins and finally, locking the translation of the second panel relative to the first panel. The assembly according to the invention is particularly suitable for furniture elements such as boxes, drawers or boxes of relatively small dimensions. This assembly can be done very simply by a non-specialist because it can not be wrong in the assembly of the elements and this assembly is self-locking. In particular the translation lock is the bottom of the box or a box or drawer. The lock ensures not only the locking in translation of a panel relative to the other, but also the maintenance of the angle between the two panels and in particular the angled arrangement. In the case of a parallelepipedal box, the second panel is assembled with the two keys at both edges, the second panel (side) and then blocks the assembly by introducing the translation lock which, in general, constitutes the bottom of the box in the grooves parallel to the length of the panels and then the second panel is engaged, the one in which the two grooves are already provided with the keys, by engaging the pins in the other pairs of holes of the edges of the second panels. At the end of the assembly, it is sufficient to play on the second first panel to engage its groove on the edge of the bottom which thus blocks the relative translation of the four panels in the direction perpendicular to the bottom, that is to say in the direction parallel to the assembly line. Due to the tight engagement of the pins in the hole, the assembly is held. This assembly can be disassembled at the possible price of the destruction of the fastening elements of the pins. The assembly can also be made definitive by glue dots placed on the edge of the second panels before the compression of the second panels to the first panels. According to another advantageous characteristic, the translational lock is constituted by a latch engaged in a groove of one of the panels and a groove in the other panel, these grooves intersecting at the junction of the two panels in the position of assembly, that is to say when the relative position of the second panel relative to the first following the assembly line is the correct assembly line. This lock may be constituted by a triangular shaped plate attached to the assembly angle of the two panels (for example a right angle) and which is wedged in the two grooves. According to another advantageous characteristic, the lock is constituted by the bottom of the box made with this assembly system. According to another feature, the transfer latch is constituted by a portion of the edge of the second panel which is at least in relief in the direction transverse to the assembly direction. It may be for example a tongue housed in a transverse groove intersecting the edge of the second panel and which protrudes to come into the locking groove in translation made in the first panel. Such a tab can be easily placed in the first or second panel and housed in the groove or groove portion of the other panel at the end of the assembly movement of the two panels. In the case where the assembly grooves thus used are those which receive the bottom of the box, it is also possible to truncate the corner of the bottom of the box at the point where the two panels meet; where the corner of the bottom penetrates the junction of the two grooves. According to another advantageous characteristic, the groove has a cavity having an inverted V section, with two branches and the key has a cylindrical sole with inverted V-shaped section, the two branches of which meet at the top by a flat top coming into the window of the groove and carrying at least one pin protruding from the window. This embodiment is particularly simple and effective both for the manufacture of the groove by circular saw traces made in the factory as the holding that provides this groove with its bottom V cooperating with the V-shaped section of the sole of the key.

According to another feature, in this embodiment, the groove and the sole have complementary V sections, particularly with branches at an angle of 90 °. According to another advantageous characteristic, the edges of the legs of the sole are rounded to promote their sliding to the introduction into the groove. According to another advantageous characteristic, the cylindrical pin has reliefs or hooking elements so as to hang firmly in the hole of the other panel.

According to another advantageous characteristic, the key comprises two pins spaced apart by a reference distance and the holes intended to receive them in the edge of the other panel are spaced apart from this reference distance. Finally, the invention relates to a piece of furniture or small bathroom furniture such as a box, a box or a drawer composed by the assembly of panels with an assembly system as described above. These furniture elements can be preferably distributed in the disassembled state leaving the buyer the task of assembling the panels and this in a virtually guaranteed manner without risk of mounting error. In other words, this piece of furniture can be assembled by a buyer of average attention and having no particular skill in the field of DIY or carpentry. Drawings The present invention will be described hereinafter in more detail with the aid of exemplary embodiments of assembly systems of two panels in a dihedral assembly and assemblies obtained, shown in the accompanying drawings in which: Figure 1 is a general isometric view of an assembly system of two panels according to the invention; - Figure 2 in its parts 2A, 2B shows the assembly system with two panels and the assembly key, FIG. 2A is an exploded view, FIG. 2B shows the first assembly step, FIG. 3 in its parts 3A-3D shows an embodiment of an assembly key, namely: FIG. 3A is an isometric view of one embodiment of the assembly key, FIG. 3B is a front view of the assembly key, FIG. 3C is a side view of the assembly key and FIG. FIG. 3D is a view from above of the assembly key, FIG. 4 4A, 4B is a sectional view of the assembly of two panels passing through the assembly groove and the hole receiving a pin of the key: FIG. 4A is a sectional view without the key, FIG. FIG. 4B is a sectional view with the key, generally at right angles but which, according to the shape of the box or box to be produced, may have a different angle; FIG. 5 shows in its parts 5A-5C views. In section of an assembly system according to another embodiment of the invention: FIG. 5A is an exploded sectional view of the elements of the assembly system; FIG. 5B is a sectional view of the assembly system; 5A assembly in the first assembly step, FIG. 5C is a sectional view similar to the previous ones showing the last assembly step, FIG. 6 is an isometric view of a box such as a drawer comprising assembly systems connecting the four sides of the drawer, - FIG. 7 is a front view of a small side, FIG. 8 in its parts 8A-8C shows different views of the long side of the box or drawer of FIG. 6: FIG. 8A is a front view of the side FIG. 8B is a bottom view of the side; FIG. 8C is a side view of the panel, DESCRIPTION OF EMBODIMENTS OF THE INVENTION According to FIGS. 1, 2A, 2B, the object of the invention is a assembly system of two panels 1, 2 by an assembly called "flat joint" that is to say an assembly of two panels forming a dihedron.

Under normal conditions, the assembly is a perpendicular assembly although other angles may be envisaged. Such an assembly is particularly intended for the realization of parallelepipedic boxes with four sides, if necessary with a partition, and a bottom. But it may also be suitable for assembling panels at an angle other than a right angle, for example an angle of 120 ° for making assemblies of hexagonal section boxes. The explanations given below are suitable in these different cases by adapting the angle of assembly and the angle of the edge of the panel.

For ease of explanation and orientation tracking, Figure 1 shows an XYZ mark giving the three reference directions. The panels 1, 2 are generally rectangular panels to achieve two sides of a box or box with the case where one or more partitions subdividing the volume of the box. The panels 1, 2 have a face 11, 21 (inner face) an outer face, sides 12, 22 and a ring 13, 23. But only parts of the panels 1, 2 enter the combination of the assembly system.

In this meeting of two panels 1, 2, the assembly is not symmetrical, that is to say that it is not reversible as will be detailed next. The assembly system combines the first panel 1 and the second panel 2, one of which (the second panel 2) is applied against the side of the first panel 1 by its edge 23. The assembly is done using an assembly key 3 housed in the first panel 1 and receiving the second panel 2. The assembly is locked in translation by a translational lock 4.

This translational lock 4 consisting of a wedge-shaped piece, for example of right angle if the assembly is made at the square, generally constitutes a translation locking means. The translation locking means could also be constituted by a small tongue placed at the junction of the grooves of the first and the second panel characterizing the correct assembly in the direction of translation. Indeed, as long as the relative translation movement of the second and the first panel is not blocked, this translation is possible by sliding the assembly key in its groove comprising the second panel, with respect to the first . This lock can also be constituted by a raised portion of the second or the first panel and which comes into a cavity of the other panel. In more detail, according to FIGS. 1 and 2A, the first panel 1 comprises in its face 11, a straight groove 14 oriented in the assembly direction (LA) (direction y) with a window 142 open in the top face 11, for example the inner face of the panel. This rectilinear groove 14 has an undercut section, that is to say that its cavity 140 made in the thickness of the panel 1 has its largest dimension in the direction transverse to the assembly direction (LA); this dimension is larger than the width of the window 142 of the groove in the face 11 of the panel. The straight groove 14 opens at at least one of its ends 14e that is to say that it opens at the edge 12 of the panel 1. The assembly groove 14 has an inverted V-shaped section whose The cavity 140 is formed by two branches 141 joining at the top of this V-shape corresponding to the window 142 and forming a bottom 143 in the form of a dihedral serving as a bearing surface. The cavity 140 thus has an undercut section since the spacing of the ends of the branches 141 is greater than the width of the window 142. The first panel 1 also comprises a groove 15 substantially parallel to the side 12 which receives a translation latch 4 at the junction of the two panels 1, 2. The assembled second panel 2 is oriented parallel to the plane ZY; it has a face 21 and a visible side in the figures, a song 23 and two holes 24 open into the song 23. These holes 24 have their axis oriented in the direction Z. The holes 24 realize the assembly of the panel 2 at the key 3 itself joined to the panel 1. Near the side 12, the second panel 2 has a groove 25 in a position homologous to the groove 15 along the side and receiving the latch 4. According to the embodiment of FIGS. 3A -3D the key 3 consists of an insole 31 with inverted V section with two branches 311 and a flat top 313. The sole 31 has a cylindrical shape of section corresponding to that of the groove 14 and whose top 313 comes to level with the window 142 or even remains slightly below this level to be certain that the edge 23 of the panel 2 may come to bear against the face 11 around the window 142. The sole 31 carries two cylindrical pins 32, provided of hanging elements 321 periphery in the form of excrescences distributed peripherally over the height to form retaining elements. These attachment elements 321 are for example distributed over three equidistant sectors as shown in the top view of FIG. 3D. The branches 311 of the sole 31 preferably have edges 312 rounded to facilitate their introduction into the assembly groove 14 by its end 14e. Depending on the section of the teeth, the bottom of two branches 141 will be straight or rounded, the latter form of the bottom ensuring better contact with the key whose edges are rounded.

The pins 32 of the key 3 are spaced apart from the distance (d) and the holes 24 are made in the edge 23 of the panel 2 with the same spacing (d) and in a suitable position in the direction of the length of the edge 23 to distribute as best as possible the assembly efforts of the two panels 1, 2 with the key. According to a variant not shown, the single-pin key or more than two pins. Figures 2A, 2B show the assembly steps of the two panels 1, 2, the first panel 1 being for example laid flat. According to the first step, the assembly key 3 is slid into the groove 14 via the outlet at the end 14e of the groove 14 in the side 12 of the panel 1. The key is positioned substantially at the location of its 2B shows the panel 2, so that its holes 24 are aligned along the axis of the pins 32 and begins to engage the holes 24 on the pins 32 by proceeding if necessary by trial and error. Then the pins 32 are fully depressed by lowering the panel 2 until its edge 23 is applied against the face 11 of the panel 1. It is then possible to correct the relative position of the panel 2 with respect to the panel 1 by sliding the panel assembly 2 and the key 3 in the groove 14 to the correct position which corresponds to the junction of the grooves 15, 25; this makes it possible to install the translatory lock 4 (FIG. 1). This lock 4 is for example the bottom of the box. FIGS. 4A, 4B show the assembly system of the panels 1, 2 by sectional views passing through the bore 24.

The section of the assembly groove 14 without the key 3 shows the section of the undercut cavity 140 formed by the two branches 141 opening into the face 11 through the window 142 and leaving a cavity bottom 143 in the form of a dihedron constituting a bearing surface and maintaining the underside of the sole 31 for its branches 311.

The groove 14 which does not necessarily extend over the entire width of the panel 1 is advantageously made in the case of the section shown in FIGS. 4A, 4B by two circular saw cuts at 45 ° with respect to the face 11 leaving the window 142 of dimension substantially equal to 1, 4 times the width of the branches 141 thus forming an undercut cavity 140 closed by the edges 144 defining the opening 142 having a good resistance in the thickness of the panel 1. The lines When sawing is done with a circular saw, if the groove does not open at both ends, it will end up by going back to the surface of the panel in an arcuate shape. But this is not a problem and does not change the rectilinear character of the groove. Figure 4B shows the section of the sole 31 with its branches 311 and the rounded edges 312 facilitating the sliding of the branches 141. This is all the more important that the panels 1 can be made based on particle board so that the groove 14 has a surface that is not particularly slippery. Figures 4A, 4B also show the diameter of the pin 32 which is preferably equal (clearance) to the width of the window 142 to take advantage of the available space in the opening and avoid unnecessary play. Finally, this stabilization is reinforced by the support of the branches 311 against the bottom dihedron 143 of the cavity against undercut.

FIGS. 5A-5C show another embodiment of the assembly system whose description uses the same references as the first embodiment, but supplemented by the suffix (a) for elements similar to those described and whose description does not will not necessarily be repeated in detail.

The second embodiment differs in the undercut section of the reverse T-shaped rectilinear assembly groove 14a. This groove 14a receives a key 3a whose sole 31a is of substantially rectangular section with cylindrical pins 32a as the previous ones.

The groove 14a has a window 141a along the assembly line LA from which the cavity 140a descends from a cross member 142a constituting the two edges 144a of the groove. The key 3a has a flange 31a also cylindrical (in the geometric sense) with an inverted T-section, adapted to that of the groove 14a with a cross member 311a and a rising branch 312a coming between the edges 144a of the groove 14a and ending by a flat top 313a from which are derived the pins 32a identical to the pins 32 of the embodiment described above.

In all cases, the cylindrical pins 32, 32a of circular section have the advantage of requiring a corresponding housing 24, 24a made in the form of a bore which ensures excellent stabilization without play and without weakening the panel 2 at the level of its song 23.

The diameter of the bores 24, 24a corresponds to that of the pins 32, 32a for a tight assembly that is to say without play and retained by the attachment elements 321, 321a. Depending on the length of the assembly, one or more keys or keys with a different number of pins 32 and holes made in the form of pre-drilling are preferably used in the factory with the dimensions and the arrangements depending on the keys. 'assembly. Figure 6 shows a box such as a drawer assembled by assembly systems according to the invention at the four corners of the box. The box is formed of a facade FA which corresponds to the panel 1 described generally above and joined to two sides CA, CB corresponding to the panel 2 described above and finally a rear side FB similar to the panel 1. The box or drawer has a bottom FF. The assembly is done with the assembly system shown but not detailed. It is highlighted by a circle surrounding one of the edges. The constituent elements of this drawer are shown in Figures 7 and 8A, 8B, 8C. Figure 7 shows a panel CA, CB corresponding to panel 2 described above but with a horizontal orientation and not vertical for the largest dimension. This panel has two edges 23 with two holes 24 and a groove 25 to receive the bottom 4B. The front or rear panel FA, FB has the structure shown in Figures 8A-8C. Figure 8A shows the FA or FB panel with the grooves 14 near the two edges opening at the edge 12 and a groove 15 for receiving the bottom. The side view of FIG. 8B shows the opening of the two grooves 14 in the side 12. FIG. 8C is a side view showing the groove 15 which intersects the grooves 14 and constitutes the translation locking means as this has been been stated previously. The assembly system as described above is particularly suitable for furniture or furniture such as boxes, boxes, drawers, coffee tables and generally rectangular parallelepiped furniture elements, distributed in the disassembled state. The user will have no trouble assembling the furniture elements in a simple manner as described above with the aid of Figures 1, 2A, 2B by repeating this operation to the four edges of the box but preferably respecting a certain order consisting in first introducing the two keys in what constitutes the first panel (for example the front of the drawer) and then putting in place the two sides that is to say the second sides by engaging them on the pins two keys and then introducing the two keys in the other first panel (the one forming the rear edge of the drawer) and then engaging the pins gradually into the holes of the other sections of the second panels already connected to the first panels. In this assembly, it is necessary to set up the bottom constituting the translational lock either when the first panel and the two second panels are finally assembled by sliding the bottom in the groove of the two second panels into the groove of the first panel or by setting up the second first panel. Another method may be to leave the assemblies sufficiently spaced to allow to introduce the bottom and place it temporarily in two grooves to complete the assembly by completely joining the panels.

The elements of the assembly are preferably prepared in the factory, that is to say that the grooves of the first panels are prepared at the factory as well as the holes of the slices of the second panels to facilitate assembly and especially to avoid errors in positioning of the holes. The keys are advantageously pieces of plastic or, where appropriate, of light metal or injected alloy. 10 NOMENCLATURE 1 Panel 11 Side 12 Side 13 Singing 14 Assembly groove 14e Open end 140 Groove cavity 141 Branch 142 Window 143 Bottom 144 Edge Groove 15 2 Panel 21 Side 22 Side 23 Side 24 Drilling Groove 3 Assembly wrench 31 Sole 25 311 Branch 312 Rounded edge 313 Flat top 32 Pin 321 Clamping element 4 Translation lock d Spindle spacing / Center distance holes LA Assembly line X, Y, Z Reference directions

Claims (8)

CLAIMS1) Assembly system of two panels for making a dihedral assembly of a cabinet comprising: - a first panel (1) provided with a straight groove with an undercut section (14) having a window (142) following the assembly line (LA) and opening at least one end (14e) to the edge of the panel, - a second panel (2) to be joined by its edge (23) to the first panel (1) along the line assembly (LA), having at least one bore (24) opening into its edge (23), - an assembly key (3) formed of a cylindrical sole (31) carrying at least one pin (32), - the cylindrical sole (31) having a section complementary to that of the groove (14) and each pin (32) projecting from the window of the groove (14) to be housed in the hole (24) of the edge (23); ) of the second panel (2) when the key (3) is slid into the groove (14) and - a translation lock (4) blocking the translation r elatives of the panels (1, 2) following the direction of the assembly line (LA). 2) assembly system according to claim 1, characterized in that the translational lock (4) is constituted by a latch (4) engaged in a groove (15) of one of the panels (1) and a groove (25) of the other panel (2), these two grooves joining at the junction of the two panels (1, 2) in the assembled position. 3) assembly system according to claim 2, characterized in that the latch (4) is constituted by the bottom of the box joined by the assembly system. 4) An assembly system according to claim 1, characterized in thatthe groove (14) has a recess (140) having an inverted V-section with two branches (141) and the key (3) has a cylindrical sole ( 31) with an inverted V-shaped section, whose two branches (31) meet at the top by a flat top (313) coming into the window (142) of the groove (14) and carrying at least one pin ( 32) protruding from the window (142). 5 °) assembly system according to claim 4, characterized in that the groove (14) and the sole (31) have complementary V-shaped sections, in particular with branches (31, 141) at an angle of 90 °. 6 °) assembly system according to claim 1, characterized in that the cylindrical pin (32) has hooking reliefs (321). 7 °) assembly system according to claim 1, characterized in that the key (3) has two pins (32) and the second panel (2) has two bores spaced from each other of the spacing ( d) two pins (32). 8 °) Furniture element such as box or drawer, characterized in that it is composed by the assembly of panels (1, 2) by an assembly system according to any one of claims 1 to 7 to achieve a dihedral assembly of a cabinet comprising: - a first panel (1) provided with an undercut groove (14) having with a window (142) along the assembly line (LA) and opening at least by a end (14e) at the edge of the panel, - a second panel (2) joined by its edge (23) to the first panel (1) along the assembly line (LA), having at least one hole (24) opening into its edge (23), - an assembly key (3) formed of a cylindrical sole (31) carrying at least one pin (32), - the cylindrical sole (31) having a section complementary to that of the groove (14). ) and each pin (32) protruding from the slot of the groove (14) being housed in the bore (25) of the edge (23) of the second panel (2) when the a key (3) being slid into the groove (14) and - a translation lock (4) blocking the relative translation of the panels (1, 2) in the direction of the assembly line (LA).