Set of panels with mechanical locking devices

Abstract

A set is disclosed comprising a first panel (1) having a first major plane (10) and a first panel surface (13), a second panel (2) having a second major plane (20) and a second panel surface (23), a back panel (40), and a mechanical locking device for locking a first edge surface (11) of the first panel (1) to a second edge surface (21) of the second panel (2) at a joining plane (J). The first major plane (10) is essentially perpendicular to the second major plane (20), the joint plane (J) extends at a first angle α relative to the first major plane (10), the mechanical locking device has at least one rod-shaped element (31) in the first edge surface (11) and at least one insertion groove (32) in the second edge surface (21), the rod-shaped element (31) is configured to be inserted into the insertion groove (32), the rod-shaped element (31) extends from the first edge surface (11) at a second angle (β), and the insertion groove (32) extends from the second edge surface (21) into the second edge surface (21) at a third angle (γ). The mechanical locking device further comprises a first panel groove (14) in the first panel surface (13) of the first panel (1) and / or a second panel groove (24) in the second panel surface (23) of the second panel (2), the back panel (40) is configured to cooperate with at least one of the first panel groove (14) and the second panel groove (24), the at least one locking gear (50) is configured to cooperate with the back panel (40) and at least one of the first panel groove (14) and the second panel groove (24) for locking the first panel (1) relative to the second panel (2), and the first angle α between the joining plane (J) and the first major plane (10) is approximately 45°.

Description

[Technical Field]

[0001] Technical field of the invention An embodiment of the present invention relates to panels that can be positioned perpendicular to each other and locked together with a mechanical locking device. The panels can be assembled and locked together to obtain a furniture product such as a bookcase, cupboard, wardrobe, chest, drawer, or furniture part. [Background technology]

[0002] Technical background A furniture article provided with a mechanical locking device is disclosed in PCT / SE / 2019 / 050802. The furniture article includes a first panel connected primarily vertically to a second panel by a mechanical locking device. The mechanical locking device may include an inclined pin, a back panel, and a locking portion.

[0003] The above descriptions of various known embodiments are such applicants' characterizations and are not an admission that any of the above descriptions qualify as prior art.

[0004] Embodiments of the present invention address the need to provide panels that can be easily assembled. Summary of the Invention

[0005] It is an object of certain aspects of the present invention to provide improvements over the above-mentioned and known techniques; in particular to facilitate the assembly of panels that are configured to be assembled without the need for the use of any tools.

[0006] It is a further object of at least certain aspects of the present invention to facilitate the assembly of panels that are easy to manufacture and use and are configured to be assembled with locking devices that reduce the risk of incorrect installation thereof.

[0007] It is a further object of at least certain aspects of the present invention to facilitate assembly of panels that are configured to be assembled in a more stable and aesthetic manner.

[0008] A further object of at least certain aspects of the present invention may be to avoid the need to provide edge-banding of the edges of the panels.

[0009] At least some of these and other objects and advantages that will become apparent from the description are achieved by the following set, comprising: a first panel having a first main plane and a first panel surface; a second panel having a second main plane and a second panel surface; a back panel; and a mechanical locking device for locking a first edge surface of the first panel to a second edge surface of the second panel in a joining plane, wherein the first main plane is essentially perpendicular to the second main plane and the joining plane extends at a first angle relative to the first main plane, and the mechanical locking device has at least one rod-shaped element in the first edge surface and at least one rod-shaped element in the second edge surface. the first panel further comprises an insertion groove, the rod-shaped element configured to be inserted into the insertion groove, the rod-shaped element extending from the first edge surface at a second angle, and the insertion groove extending from the second edge surface at a third angle into the second edge surface; the mechanical locking device further comprises a first panel groove in the first panel surface of the first panel and / or a second panel groove in the second panel surface of the second panel; the back panel configured to cooperate with at least one of the first panel groove and the second panel groove; and at least one locking gear configured to cooperate with the back panel and at least one of the first panel groove and the second panel groove for locking the first panel relative to the second panel; The first angle between the joint plane and the first major plane is about 45°.

[0010] The first panel, second panel and back panel may be wood-based panels.

[0011] The first panel, the second panel and the back panel may be furniture panels.

[0012] The first angle between the joining plane and the first major plane may be about 45.degree.. For sets of first and second panels having different thicknesses, different angles may be preferred.

[0013] The angle may be adapted so that the joining plane extends through the intersection of the outer surface of the first panel and the outer surface of the second panel to the intersection of the inner surface of the first panel and the inner surface of the second panel.

[0014] The inner surface of the first panel may face the inner surface of the second panel. The outer surface of the first panel may be opposite the inner surface of the first panel. The outer surface of the second panel may be opposite the inner surface of the second panel. The outer corners of the first and second panels at the joining plane may include chamfered edges, preferably covered with a decorative layer. The chamfering may increase the strength of the corners. The decorative layer may be a plastic foil, a veneer, or paint.

[0015] In one embodiment, the width of at least one of the first panel groove and the second panel groove minus the thickness of the back panel is greater than or essentially equal to the extension of the rod-shaped element along the first edge surface.

[0016] According to one embodiment, the second angle is in the range of about 30° to about 60°, or in the range of about 40° to about 50°, or about 45°.

[0017] According to one embodiment, the mechanical locking device includes at least two rod-shaped elements.

[0018] According to one aspect, the mechanical locking device comprises two or more rod-shaped elements arranged in a line essentially parallel to the first edge surface or the second edge surface.

[0019] According to one embodiment, the rod-shaped element is disposed in a rod element groove in the first edge surface.

[0020] According to one aspect, the rod element groove is a drilled hole.

[0021] According to one embodiment, the drilled holes are bottom-ended drilled holes.

[0022] According to one embodiment, the width of the first panel groove is essentially the same as the width of the second panel groove.

[0023] According to one embodiment, the first panel includes a third edge surface and the second panel includes a fourth edge surface, the first panel groove being substantially parallel to the third edge surface and the second panel groove being substantially parallel to the fourth edge surface.

[0024] According to one embodiment, the first panel groove extends substantially along the entire third edge surface, and the second panel groove extends essentially along the entire fourth edge surface.

[0025] According to one embodiment, at least one of the first panel groove and the second panel groove is bottom-ended.

[0026] According to one aspect, the locking gear is further configured to cooperate with the back panel for locking the back panel relative to the first panel and / or the second panel.

[0027] According to one aspect, the lock gear is flexible.

[0028] According to one aspect, the locking gear includes a spring.

[0029] According to one aspect, the locking gear includes a wedge element.

[0030] According to one embodiment, when one first panel, one second panel, and one back panel are assembled, the extension of the back panel from the intersection between the first panel surface and the first edge surface of the first panel is less than the extension of the rod-shaped element from said intersection.

[0031] According to one embodiment, the first edge surface or the second edge surface includes a tongue portion, the tongue portion including a first tongue surface and a second tongue surface, and the other of the opposing first edge surface or second edge surface includes a tongue groove.

[0032] According to one aspect, the mechanical locking device includes a first space between the tongue groove and the first tongue surface and / or the second tongue surface when the set is in a locked position.

[0033] According to one embodiment, the tongue groove includes one or more rod-shaped elements.

[0034] According to one embodiment, the rod element grooves are reinforced with a plastic, eg a thermoplastic, and / or a liquid, eg a PVAc-glue.

[0035] According to some embodiments, the core of the first panel and / or the second panel and / or the back panel may be a wood-based core such as MDF, HDF, OSB, WPC, plywood, or particle board. The core may also be a plastic core, including, for example, a thermoplastic or thermoset plastic, such as vinyl, PVC, PU, ​​or PET. The plastic core may include a filler.

[0036] The first panel and / or the second panel and / or the back panel may also be solid wood.

[0037] The first panel and / or the second panel and / or the back panel may be provided on one or more sides with a decorative layer such as a foil or veneer.

[0038] At least some of the above-specified and other objects and advantages that may become apparent from the description are achieved by a locking device for an article of furniture according to the above. [Brief explanation of the drawings]

[0039] These and other aspects, features and advantages of which embodiments of the invention are possible will become apparent and elucidated from the following description of embodiments and aspects of the invention, taken in conjunction with the accompanying drawings in which: [Figure 1A] FIG. 1A shows a 3D view of an embodiment of the set of the invention in an unassembled state. [Figure 1B] FIG. 1B illustrates a side view of an embodiment of the first and second panels in an unlocked position. [Figure 2A] 2A-2F show close-ups of lock gears according to certain embodiments of the invention. [Figure 2B] 2A-2F show close-ups of lock gears according to certain embodiments of the invention. [Figure 2C] 2A-2F show close-ups of lock gears according to certain embodiments of the invention. [Figure 2D] 2A-2F show close-ups of lock gears according to certain embodiments of the invention. [Figure 2E] 2A-2F show close-ups of lock gears according to certain embodiments of the invention. [Figure 2F] 2A-2F show close-ups of lock gears according to certain embodiments of the invention. [Figure 3A] FIG. 3A shows a side view of an embodiment of the first and second panels in a locked position. [Figure 3B] FIG. 3B shows a close-up side view of portions of the first and second panels in the locked position. [Figure 4A] FIG. 4A shows an enlargement of a portion of the embodiment shown in FIG. 3A. [Figure 4B] FIG. 4B shows a close-up of the first and second panels in the locked position, with the locking gear being a wedge. [Figure 5A] FIG. 5A shows a portion of the first panel of one embodiment of the invention. [Figure 5B] FIG. 5B shows a portion of the second panel of an embodiment of the invention. [Figure 6] FIG. 6 shows a second panel of an embodiment of the invention, the second panel including a tongue. [Figure 7]FIG. 7 shows a first panel of an embodiment of the invention, the first panel including a tongue and groove. [Figure 8] FIG. 8 shows a close-up of the first and second panels in the locked position, with the back panel, first and second panel grooves cooperating with the locking gear. [Figure 9A] 9A-9B show 3D views of one embodiment of a set of panels according to the invention in an assembled state. [Figure 9B] 9A-9B show 3D views of one embodiment of a set of panels according to the invention in an assembled state. DETAILED DESCRIPTION OF THE INVENTION

[0040] Detailed Description Specific embodiments of the invention will now be described with reference to the accompanying drawings. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The terminology used in the detailed description of the embodiments set forth in the accompanying drawings is not intended to be limiting. In the drawings, like numbers refer to like elements.

[0041] The terminology used herein is for the purpose of describing particular embodiments of the disclosure only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

[0042] In the drawings and specification, exemplary embodiments of the disclosure are disclosed. However, many variations and modifications can be made to these embodiments without substantially departing from the principles of the disclosure. Accordingly, the disclosure should be considered illustrative rather than restrictive and should not be limited to the specific embodiments described above. Thus, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, and the definition of dimensions such as width or extent or height or length or diameter will depend on how the exemplary embodiment is depicted; therefore, when depicted differently, a width or diameter shown in one depiction will be a length or thickness in another depiction.

[0043] It should be noted that the word "comprising" does not necessarily exclude the presence of other elements or steps than those listed, and the word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. Furthermore, it should be noted that any reference signs do not limit the scope of the claims, and that exemplary aspects may be implemented at least in part by means of both hardware and software, and that several "means," "units," or "devices" may be represented by the same item of hardware.

[0044] Different aspects, alternatives, and embodiments of the invention disclosed herein may be combined with one or more of the other aspects, alternatives, and embodiments described herein. Two or more aspects may be combined.

[0045] An embodiment of the inventive set is shown in FIGS. 1A-1B and 3A-9B, which includes a first panel 1 having a first major plane 10 and a first panel surface 13, a second panel 2 having a second major plane 20 and a second panel surface 23, a back panel 40, and a mechanical locking device for locking a first edge surface 11 of the first panel 1 to a second edge surface 21 of the second panel 2 at a joining plane J. The first major plane 10 may be essentially perpendicular to the second major plane 20. The joining plane J extends at a first angle α relative to the first major plane 10. The mechanical locking device has at least one rod-shaped element 31 in the first edge surface 11 and at least one insertion groove 32 in the second edge surface 21. The rod-shaped element 31 is configured to be inserted into the insertion groove 32. The rod-shaped element 31 extends at a second angle β from the first edge surface 11. The insertion groove 32 extends from the second edge surface 21 into the second edge surface 21 at a third angle γ. The mechanical locking device further comprises a first panel groove 14 in the first panel surface 13 of the first panel 1 and / or a second panel groove 24 in the second panel surface 23 of the second panel 2. The back panel 40 is configured to be inserted into and cooperate with at least one of the first panel groove 14 and the second panel groove 24, and at least one locking gear 50 is configured to cooperate with the back panel 40 and at least one of the first panel groove 14 and the second panel groove 24 for locking the first panel 1 relative to the second panel 2. The first angle α between the joining plane J and the first major plane 10 may be in the range of approximately 30° to 60°, or may be in the range of approximately 40° to 50°, or may be approximately 45°.

[0046] This results in a very aesthetic appearance for the set of panels when they are assembled. Furthermore, because the first angle α between the joining plane J and the first major plane 10 is about 45°, edge-banding of the edges of the panels is no longer necessary.

[0047] The first panel 1, the second panel 2 and the back panel 40 may be panels for a piece of furniture or may be part of the frame of the piece of furniture.

[0048] The first panel 1, second panel 2 and back panel 40 may be wood-based panels.

[0049] Figures 1A-1B and 5A-7 disclose an embodiment in which the panels are in an unassembled state, while Figures 3A-4B and 8-9B disclose an embodiment in which the panels are in an assembled state.

[0050] The set may be assembled by displacing the first panel 1 relative to the second panel 2 in an assembly direction AD essentially parallel to the first panel face 13 .

[0051] The assembly direction AD may be essentially parallel to the second angle β and / or the third angle γ.

[0052] The second angle β may be in the range of about 30° to about 60°, or in the range of about 40° to about 50°, or may be about 45°.

[0053] According to some embodiments of the invention, the second angle β may be in the range of approximately 30° to 60°, or may be in the range of 40° to 50°, or may be approximately 45°.

[0054] According to some embodiments of the invention, the third angle γ may be in the range of approximately 30° to 60°, may be in the range of 40° to 50°, or may be approximately 45°.

[0055] According to an embodiment of the invention, the second angle β and the third angle γ may be essentially the same.

[0056] The second angle β may be measured in a plane parallel to the first panel surface 13 .

[0057] The third angle γ may be measured in a plane that is perpendicular to the second panel surface 23 and parallel to the second edge surface 21 .

[0058] According to one embodiment, the mechanical locking device may include at least two rod-shaped elements 31. When the mechanical locking device includes two or more rod-shaped elements 31, the rod-shaped elements 31 may be arranged in a row essentially parallel to the first edge surface or the second edge surface 11, 21.

[0059] The first edge surface 11 may include two or more of the rod-shaped elements 31, and the second edge surface 21 may include two or more of the insertion grooves 32, or vice versa, and they may be arranged linearly, with each rod-shaped element 31 configured to be inserted into the insertion groove 32.

[0060] The rod-shaped element 31 may be configured to cooperate with the bottom surface of the insertion groove 32 in the locked position.

[0061] The side walls of the insertion groove 32 may comprise the material of the core of the first panel 1 or the second panel 2, depending on which panel the insertion groove 32 is made in and to which panel the rod-shaped element 31 is attached. According to certain embodiments, they may also be made of, for example, metal or fiberglass.

[0062] The rod-shaped elements 31 may be arranged in rod element grooves 36 in the first edge surface 11. The rod element grooves 36 may be drilled holes. In one embodiment, the drilled holes are bottom end drilled holes.

[0063] The rod-shaped elements 31 may be configured to be mounted in the rod element grooves 36 by friction.

[0064] The rod-shaped elements 31 may be configured to be glued into the rod element grooves 36 .

[0065] The rod-shaped elements 31, rod element grooves 36 and insertion grooves 32 may have a substantially circular shape, although other shapes such as triangular, rectangular, square, etc. are also possible.

[0066] The rod-shaped elements 31 may be made from one or more of a wood-based material, a polymeric material which may contain reinforcements such as fiberglass, or a metal. The rod-shaped elements 31 may have a waxed surface to facilitate assembly.

[0067] The first panel groove 14 may have a width W1.

[0068] The second panel groove 24 may have a width W2.

[0069] The width W1 of the first panel groove 14 may be essentially the same as the width W2 of the second panel groove 24.

[0070] The width (W1, W2) of at least one of the first panel groove 14 and the second panel groove 24 minus the thickness T of the back panel 40 may be greater than or essentially the same as the extension E of the rod-shaped element 31 along the first edge surface 11; the extension E is measured perpendicular to the first edge surface 11.

[0071] The first panel 1 may include a third edge surface 18, and the second panel 2 may include a fourth edge surface 28. The first panel groove 14 may be substantially parallel to the third edge surface 18, and the second panel groove 24 may be substantially parallel to the fourth edge surface 28.

[0072] According to one embodiment, the first panel groove 14 may extend substantially along the entire third edge surface 18 and the second panel groove 24 may extend essentially along the entire fourth edge surface 28 .

[0073] At least one of the first panel groove 14 and the second panel groove 24 may be a bottom end.

[0074] The first panel groove 14 and / or the second panel groove 24 may be formed by mechanical cutting, such as milling or sawing.

[0075] The first panel groove 14 may be formed in the core and in the first panel face 13 of the first panel 1. The second panel groove 24 may be formed in the core and in the second panel face 23 of the second panel 2.

[0076] The first panel groove 14 and / or the second panel groove 24 may be liquid impregnated / liquid reinforced.

[0077] The extension H of the back panel from the intersection 19 between the first panel surface 13 and the first edge surface 11 of the first panel 1 may be smaller than the extension of the rod-shaped element 31 from said intersection 19 when one first panel 1, one second panel 2 and one back panel 40 are assembled.

[0078] According to one embodiment, the first or second edge surface 11, 21 may include a tongue 22, as shown in Figures 6 and 8, which provides increased stability to the set when assembled. The tongue 22 may include a first tongue surface 25 and a second tongue surface 26.

[0079] The other of the opposite first or second edge surfaces 11, 21 may include a tongue groove 12, as shown in FIGS.

[0080] In Figure 8, it is shown that when the set including the first panel 1 and the second panel 2 is in the locked position, the mechanical locking device may include a first space 27 between the tongue groove 12 and the first tongue surface 25 and / or the second tongue surface 26.

[0081] The tongue groove 12 may include one or more rod-shaped elements 31 .

[0082] The rod element grooves 36 may be reinforced. Such reinforcement may be performed using, for example, a plastic, such as, for example, a thermoplastic, and / or a liquid, such as, for example, a PVAc-glue. This reduces the risk of damage to the rod element grooves 36 and the surrounding material.

[0083] 2A-2F show different aspects of locking gear 50 according to embodiments of the invention. Locking gear 50 may be configured to cooperate with back panel 40 for locking back panel 40 relative to first panel 1 and / or second panel 2.

[0084] The locking gear 50 may be assembled to the set of panels when the first panel 1, the second panel 2, and the back panel 40 are assembled. The locking gear 50 is inserted into the first panel groove 14 and / or the second panel groove 24, thereby locking the first panel 1 to the second panel 2.

[0085] The locking gear 50 may lock the back panel 40 relative to the first panel groove 14 and / or the second panel groove 24, thereby preventing the first panel 1 from being displaced relative to the second panel 2 in the direction opposite to the assembly direction AD.

[0086] The lock gear 50 may be made of, for example, a wood-based material, a metal, a polymeric material, or the like.

[0087] The lock gear 50 may be flexible.

[0088] The lock gear 50 may include a resilient portion.

[0089] The locking gear 50 may include wedge-shaped edges 61,62.

[0090] 2A-2D, 3A, 4A, 8, and 9b, one embodiment of locking gear 50 may include an eccentric locking head 53 and a lever arm 54 at a first end of the lever. Locking gear 50 may include a locking portion 56 at a second end opposite lever 54. When eccentric head 53 is inserted into first panel groove 14, locking portion 56 may be inserted into second panel groove 24, or vice versa.

[0091] The locking portion 56 may include a friction element 64. The friction element 64 may help retain the locking portion 56 in the first panel groove or the second panel groove. The friction element 64 may be made integral with the locking gear. The friction element may be a pointed element or a raised element.

[0092] The lever arm 54 may be resilient, allowing it to flex during insertion of the locking portion 53 in the first panel groove 12 or the second panel groove 23. The bending of the lever arm 54 may create a locking force between the locking portion and the first panel groove 14 or the second panel groove 24.

[0093] The outer portion of the eccentric locking head 53 may be thicker than the portion of the eccentric locking head 53 adjacent the first end of the lever.

[0094] 2E-2F and 4B show one embodiment of locking gear 50 including a first wedge edge 61 and a second wedge edge 62. First wedge edge 61 may be inserted into first panel groove 14, and second wedge edge 62 may be inserted into second panel groove 24 to lock first panel 10, second panel 20, and back panel 40 in a locked position.

[0095] The lock gear 50 may have a triangular shape, as shown in FIGS. 2E-2F, or optionally may have a rectangular or square shape (not shown).

[0096] The first wedge edge 61 and / or the second wedge edge 62 may include a friction element 63. The friction element 63 may help to retain the first wedge edge 61 and / or the second wedge edge 62 in the first panel groove and the second panel groove, respectively. The friction element 63 may be made integral with the lock gear. The friction element may be a pointed element or a raised element.

[0097] 3A and 4A show a locking gear having an eccentric locking head 53 in the second locking groove 24 and a locking portion 53 in the first panel groove 14. The end of the eccentric locking head 53 may have a rounded back side and a gripping edge on the front side. The locking portion 53 may have a smaller width than the eccentric locking head 53. The locking gear may be installed by placing the eccentric locking head 53 in the panel groove and rotating the locking gear along the rounded back side, which rotates the locking portion 53 toward the back panel 40. The locking portion 53 may be angled away from the back panel 40. The locking gear may be configured such that the locking portion 53 can exert a force on the outer wall of the panel groove when installed.

[0098] The first panel 1 may, in accordance with the above, include two or more of said first edge surfaces 11. In other words, one or more rod-shaped elements 31 may be disposed on two or more edge surfaces of the first panel 1, as disclosed in Figure 1A.

[0099] According to the above, the second panel 2 may include two or more second edge surfaces 21. In other words, one or more insertion grooves 32 may be arranged on two or more edge surfaces of the second panel 2.

[0100] The core of the first panel 1 and / or the second panel 2 may be a wood-based core such as MDF, HDF, OSB, WPC, plywood or particle board, or may be a plastic core including, for example, a thermoplastic or thermoset plastic such as vinyl, PVC, PU or PET. The plastic core may contain a filler.

[0101] Additionally, the first panel 1 and / or the second panel 2 may be made of solid wood.

[0102] The first panel 1 and / or the second panel 2 may be provided on one or more sides with a decorative layer such as a foil or veneer.

[0103] According to one embodiment, the panel set is a resilient panel. The resilient panel may include a core comprising a thermoplastic material. The thermoplastic material may be foamed.

[0104] The thermoplastic material may include polyvinyl chloride (PVC), polyester, polypropylene (PP), polyethylene (PE), polystyrene (PS), polyurethane (PU), polyethylene terephthalate (PET), polyacrylate, methacrylate, polycarbonate, polyvinyl butyral, polybutylene terephthalate, or a combination thereof. The core may be formed of multiple layers.

[0105] The above-described embodiments may include a decorative layer, such as a decorative foil comprising a thermoplastic material. The thermoplastic material of the decorative layer may be or include polyvinyl chloride (PVC), polyester, polypropylene (PP), polyethylene (PE), polystyrene (PS), polyurethane (PU), polyethylene terephthalate (PET), polyacrylate, methacrylate, polycarbonate, polyvinyl butyral, polybutylene terephthalate, or a combination thereof. The decorative foil may be printed, for example, by direct printing, gravure printing, or digital printing. According to some embodiments, the decorative layer comprises melamine, high-pressure laminate (HPL), or veneer.

[0106] The above-described embodiments may include a wear layer, such as a film or foil. The wear layer may include a thermoplastic material, which may be polyvinyl chloride (PVC), polyester, polypropylene (PP), polyethylene (PE), polystyrene (PS), polyurethane (PU), polyethylene terephthalate (PET), polyacrylate, methacrylate, polycarbonate, polyvinyl butyral, polybutylene terephthalate, or a combination thereof.

[0107] The above-described embodiments may include a wood-based core such as HDF, MDF, plywood, particle board, OSB, or Masonite.

[0108] The different aspects, embodiments and alternatives described above may be combined with one or more of the other described aspects, embodiments and alternatives.

[0109] Further embodiments of the invention are described below.

[0110] 1. A device comprising: a first panel 1 having a first planar major surface 10 and a first panel surface 13; a second panel 2 having a second planar major surface 20 and a second panel surface 23; a back panel 40; and a mechanical locking device for locking a first edge surface 11 of the first panel 1 to a second edge surface 21 of the second panel 2 at a joining plane J; the first main plane 10 is essentially perpendicular to the second main plane 20, the joining plane J extending at a first angle α to the first main plane 10; the mechanical locking device has at least one rod-shaped element 31 in the first edge surface 11 and at least one insertion groove 32 in the second edge surface 21; the rod-shaped element 31 is adapted to be inserted into the insertion groove 32; the rod-shaped element 31 extends from the first edge surface 11 at a second angle β; the insertion groove 32 extends from the second edge surface 21 into the second edge surface 21 at a third angle γ; - the mechanical locking device further comprises a first panel groove 14 in the first panel surface 13 of the first panel 1 and / or a second panel groove 24 in the second panel surface 23 of the second panel 2, the back panel 40 being configured to cooperate with at least one of the first panel groove 14 and the second panel groove 24, and at least one locking gear 50 being configured to cooperate with the back panel 40 and at least one of the first panel groove 14 and the second panel groove 24 for locking the first panel 1 relative to the second panel 2; The first angle α between the joining plane J and the first main plane 10 may optionally be about 45°, set.

[0111] 2. The set described in embodiment 1, wherein the width W1, W2 of at least one of the first panel groove 14 and the second panel groove 24 minus the thickness T of the back panel 40 is greater than or essentially equal to the extension E of the rod-shaped element 31 along the first edge surface 11.

[0112] 3. The set according to embodiment 1 or 2, wherein the second angle β is within a range of about 30° to about 60°, or within a range of about 40° to about 50°, or is about 45°.

[0113] 4. The set according to any one of the first to third embodiments, wherein the mechanical locking device comprises at least two rod-shaped elements 31.

[0114] 5. The set according to embodiment 4, wherein the mechanical locking device comprises two or more rod-shaped elements 31 arranged in a row essentially parallel to the first edge surface or the second edge surface 11, 21.

[0115] 6. The set according to any one of the first to fifth embodiments, wherein the rod-shaped elements 31 are arranged in the rod element grooves 36 on the first edge surface 11 .

[0116] 7. The set according to embodiment 6, wherein the rod element grooves 36 are drilled holes.

[0117] 8. The set of embodiment 7, wherein the drilled holes are bottom end drilled holes.

[0118] 9. The set of any one of embodiments 1 to 8, wherein the width W1 of the first panel groove 14 is essentially the same as the width W2 of the second panel groove 24.

[0119] 10. A set described in any one of embodiments 1 to 9, wherein the first panel 1 has a third edge surface 18, the second panel 2 has a fourth edge surface 28, the first panel groove 14 is substantially parallel to the third edge surface 18, and the second panel groove 24 is substantially parallel to the fourth edge surface 28.

[0120] 11. The set according to embodiment 10, wherein the first panel groove 14 extends substantially along the entire third edge surface 18, and the second panel groove 24 extends essentially along the entire fourth edge surface 28.

[0121] 12. The set according to any one of the first to eleventh embodiments, wherein at least one of the first panel groove 14 and the second panel groove 24 is a bottom end.

[0122] 13. A set described in any one of embodiments 1 to 12, wherein the locking gear 50 is further configured to cooperate with the back panel 40 for locking the back panel 40 relative to the first panel 1 and / or the second panel 2.

[0123] 14. The set according to any one of the first to thirteenth embodiments, wherein the lock gear 50 is flexible.

[0124] 15. The set according to any one of the first to fourteenth embodiments, wherein the lock gear 50 includes an elastic portion.

[0125] 16. The set according to any one of the first to fourteenth embodiments, wherein the lock gear 50 includes wedge-shaped edges 61, 62.

[0126] 17. A set described in any one of embodiments 1 to 16, wherein the extension H of the back panel from the intersection 19 between the first panel surface 13 and the first edge surface 11 of the first panel 1 is smaller than the extension of the rod-shaped element 31 from the intersection 19 when one first panel 1, one second panel 2 and one back panel 40 are assembled.

[0127] 18. A set described in any one of embodiments 1 to 17, wherein the first edge surface or second edge surface 11, 21 includes a tongue portion 22, the tongue portion 22 includes a first tongue surface 25 and a second tongue surface 26, and the other of the opposite first edge surface or second edge surface 11, 21 includes a tongue groove 12.

[0128] 19. A set as described in embodiment 18, wherein the mechanical locking device includes a first space 27 between the tongue groove 12 and the first tongue surface 25 and / or the second tongue surface 26 when the set is in a locked position.

[0129] 20. The set according to embodiment 18 or 19, wherein the tongue groove 12 comprises one or more rod-shaped elements 31.

[0130] 21. The set according to any one of embodiments 6 to 20, wherein the rod element grooves 36 are reinforced with a plastic, for example a thermoplastic, and / or a liquid, for example a PVAc-glue.

Claims

1. A set comprising a first panel (1) having a first main plane (10) and a first panel surface (13), a second panel (2) having a second main plane (20) and a second panel surface (23), a back panel (40), and a mechanical locking device having a joint plane (J), the mechanical locking device being configured to lock a first edge surface (11) of the first panel (1) to a second edge surface (21) of the second panel (2) at the joint plane (J), the first panel (1), the second panel (2) and the back panel (40) being wood-based furniture panels; the first major plane (10) is essentially perpendicular to the second major plane (20), and the joining plane (J) extends at a first angle (α) to the first major plane (10); The mechanical locking device has at least one rod-shaped element (31) on the first edge surface (11) and at least one insertion groove (32) on the second edge surface (21); The rod-shaped element (31) is configured to be inserted into the insertion groove (32), The rod-shaped element (31) extends at a second angle (β) from the first edge surface (11); The insertion groove (32) extends into the second edge surface (21) at a third angle (γ) from the second edge surface (21); the mechanical locking device further comprises a first panel groove (14) in a first panel surface (13) of the first panel (1) and / or a second panel groove (24) in the second panel surface (23) of the second panel (2), the back panel (40) is configured to cooperate with at least one of the first panel groove (14) and the second panel groove (24), and at least one locking gear (50) is configured to cooperate with the back panel (40) and at least one of the first panel groove (14) and the second panel groove (24) for locking the first panel (1) relative to the second panel (2); the first angle (α) between the joining plane (J) and the first major plane (10) is about 45°; a width (W1, W2) of at least one of the first panel groove (14) and the second panel groove (24) minus a thickness (T) of the back panel (40) is greater than or essentially equal to an extension (E) of the rod-shaped elements (31) along the first edge surface (11); set.

2. 2. The set of claim 1, wherein the second angle (β) is in the range of about 30° to about 60°, or in the range of about 40° to about 50°, or about 45°.

3. 3. A set according to claim 1 or 2, wherein the mechanical locking device comprises at least two rod-shaped elements (31).

4. 4. The set according to claim 3, wherein the mechanical locking device comprises two or more rod-shaped elements (31) arranged in a line essentially parallel to the first edge surface or the second edge surface (11, 21).

5. The set according to any one of claims 1 to 4, wherein the rod-shaped elements (31) are arranged in rod element grooves (36) at the first edge surface (11).

6. 6. The set of claim 5, wherein said rod element grooves (36) are drilled holes.

7. 7. The set of claim 6, wherein the drilled holes are bottom end drilled holes.

8. The set according to any one of claims 1 to 7, wherein the locking gear (50) is further configured to cooperate with the back panel (40) for locking the back panel (40) relative to the first panel (1) and / or the second panel (2).

9. The set according to any one of claims 1 to 8, wherein the lock gear (50) is flexible.

10. The set according to any one of claims 1 to 9, wherein the lock gear (50) includes wedge-shaped edges (61, 62).

11. The set according to any one of claims 1 to 10, wherein an extension (H) of the back panel from an intersection (19) between the first panel surface (13) and a first edge surface (11) of the first panel (1) is smaller than an extension of the rod-shaped element (31) from the intersection (19) when one first panel (1), one second panel (2) and one back panel (40) are assembled.

12. The set according to any one of claims 1 to 11, wherein one of the first edge surface and the second edge surface (11, 21) comprises a tongue portion (22), the tongue portion (22) comprising a first tongue surface (25) and a second tongue surface (26), and the other of the first edge surface and the second edge surface (11, 21) comprises a tongue groove (12).

13. 13. The set according to claim 12, wherein the mechanical locking device comprises a first space (27) between the tongue groove (12) and the first tongue surface (25) and / or the second tongue surface (26) when the set is in a locked position.

14. 14. A set according to claim 12 or 13, wherein the tongue-and-groove (12) comprises one or more rod-shaped elements (31).

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