Set of panels with mechanical locking devices

Abstract

A set including a first panel (1), a second panel (2), and a mechanical locking device for locking the first panel (1) to the second panel (2), wherein the first panel (1) includes a first main plane (10) and a first edge surface (11), and the second panel (2) includes a second edge surface (21), and when the first and second panels (1, 2) are in a locked position, the first edge surface (11) faces the second edge surface (21) at a joining plane (J), which extends at a first angle (α) from the first main plane (10), and the mechanical locking device includes 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), and the rod-shaped element (31) is 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 includes at least one locking groove (35) in the first edge surface (11) or the second edge surface (21) and at least one locking portion (34), the locking groove (35) includes at least one locking surface (37) extending from the first edge surface (11) or the second edge surface (21) at a fourth angle (δ), the locking portion (34) is configured to be inserted into the locking groove (35) and lock against the locking surface (37), the fourth angle (δ) being different from the second angle (β).

Description

[Technical Field]

[0001] Technical field of the invention An embodiment of the present invention relates to panels that can be positioned perpendicular to one another 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. The locking device may include one or more inclined pins. [Background technology]

[0002] Background of the Invention A furniture article provided with a mechanical locking device is disclosed in PCT / SE2019 / 050801. The furniture comprises a first panel connected primarily perpendicularly to a second panel by a mechanical locking device. The mechanical locking device may include one or more angled pins and a locking portion. Summary of the Invention

[0003] It is an object of some 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 use of any tools. A further object of at least some aspects of the present invention is to improve the strength of mechanical locking devices at the mitre joints of a set of panels. The panels may be part of a furniture product such as a bookshelf, cupboard, wardrobe, kitchen appliance, drawer, or box for storage or transport.

[0004] At least some of these and other objects and advantages that will become apparent from the description are achieved by a 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, and a mechanical locking device for locking a first edge surface of the first panel to a second edge surface of the second panel at 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 to the first main plane, and the mechanical locking device comprises at least one rod-shaped element in the first edge surface and at least one insertion groove in the second edge surface, the rod-shaped element being inserted into the insertion groove. the rod-shaped element is configured to be inserted into the first edge surface, the rod-shaped element extending from the first edge surface at a second angle, the insertion groove extending from the second edge surface at a third angle into the second edge surface, the mechanical locking device further comprising at least one locking groove in the first edge surface or the second edge surface and at least one locking portion in the other of the first edge surface or the second edge surface, the locking groove including at least one locking surface extending from the first edge surface or the second edge surface at a fourth angle, the locking portion being configured to be inserted into the locking groove and lock against the locking surface, the second angle being different from the fourth angle, and the first angle between the joining plane and the first major plane being approximately 45°.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] According to one aspect, the mechanical locking device is configured to obtain the locked position by displacing the first panel relative to the second panel in an assembly direction that is essentially parallel to the plane of the first panel and essentially parallel to the longitudinal and / or axial direction of the rod-shaped element.

[0010] According to one embodiment, the fourth angle is approximately 45° to approximately 90° greater than the second angle.

[0011] According to one embodiment, the second angle is in the range of about 30° to 60°, or in the range of 40° to 50°, or about 45°.

[0012] According to one embodiment, the mechanical locking device includes at least two rod-shaped elements.

[0013] According to one aspect, the mechanical locking device includes two or more rod-shaped elements arranged in a line primarily parallel to the first edge surface or the second edge surface.

[0014] According to one embodiment, the rod-shaped element is disposed in a rod element groove in the first edge surface.

[0015] According to one aspect, the insertion groove and / or the rod element groove are drilled holes.

[0016] According to one aspect, the drilled holes are bottom-ended drilled holes.

[0017] According to one aspect, the locking portion is flexible.

[0018] According to one aspect, the locking portion in an unbent / uncompressed state is configured to partially reside in the locking groove.

[0019] According to one aspect, the locking portion comprises a spring.

[0020] According to one aspect, the locking portion is disposed on the first edge surface or the second edge surface in the locking portion groove.

[0021] According to one aspect, the first edge surface or the second edge surface comprises a tongue portion, the tongue portion comprising a first tongue surface and a second tongue surface, and the other of the opposing first edge surface or second edge surface comprises a tongue groove.

[0022] 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 in the locked position.

[0023] According to one embodiment, the tongue groove comprises one or more rod-shaped elements.

[0024] According to one embodiment, the first panel has a first panel groove in the first panel surface, and the second panel has a second panel groove in the second panel surface.

[0025] According to one embodiment, the set further includes a back panel configured to be inserted into, and optionally cooperate with, the first and second panel grooves.

[0026] According to one embodiment, the first panel, the second panel, and the back panel are wood-based panels.

[0027] According to one embodiment, the first panel, the second panel, and the back panel are furniture panels.

[0028] According to one embodiment, the insertion groove and / or the rod element groove are reinforced with a plastic, for example a thermoplastic, and / or with a liquid, for example a PVAc-glue. [Brief explanation of the drawings]

[0029] 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 of the invention, taken in conjunction with the accompanying drawings in which: [Figure 1A] FIG. 1A shows a 3D view of one embodiment with the set in an unlocked position. [Figure 1B] 1B shows a side view of an embodiment including a set in an unlocked position, which may be included in an article of furniture that does not have a back panel. [Figure 2A] FIG. 2A shows a side view of one embodiment with the set in the unlocked position. [Figure 2B] Figure 2B shows a cross-sectional view of the set in an unlocked position according to one embodiment of the invention, the cross-section intersecting the locking groove as shown in Figure 2A. [Figure 3A] FIG. 3A shows a top view of a portion of a first panel according to one embodiment of the invention. [Figure 3B] FIG. 3B shows a top view of a portion of the second panel according to one embodiment of the invention. [Figure 4A] FIG. 4A shows a side view of one embodiment with the set in a locked position. [Figure 4B] Figure 4B shows a cross-sectional view of the set in a locked position according to one embodiment of the invention, the cross-section intersecting the locking groove as shown in Figure 4A. [Figure 5A] FIG. 5A shows a side view of one embodiment with the set in a locked position. [Figure 5B] 5B shows a cross-sectional portion of the set in the locked position according to one embodiment of the invention, the cross-section intersecting the locking groove and the insertion groove. [Figure 6] FIG. 6 shows a 3D view of a portion of the second panel with a tongue according to an embodiment of the invention. [Figure 7] FIG. 7 shows a 3D view of a portion of a first panel with a tongue groove according to an embodiment of the invention. [Figure 8A] 8A shows a side view of an embodiment with the set in a locked position. The mechanical locking device includes a space between the tongue and tongue groove. [Figure 8B] FIG. 8B shows a 3D view of a set comprising one back panel, two second panels forming the cabinet frame, and two first panels in an assembled state according to an embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 1A-2B show a set during assembly. The set comprises 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, 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, and the joining plane J may extend 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 may be 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 includes at least one locking groove 35 in the first edge surface 11 or the second edge surface 21 and at least one locking portion 34 in the other of the first edge surface or the second edge surface, the locking groove 35 including at least one locking surface 37 extending from the first edge surface 11 or the second edge surface 21 at a fourth angle δ. The locking portion 34 may be configured to be inserted into the locking groove 35 and locked against the locking surface 37, and the second angle β may be different from the fourth angle δ, for example, by at least 10°. The first angle α between the joint plane J and the first major plane 10 may be within a range of approximately 30° to 60°, approximately 40° to 50°, or approximately 45°.

[0035] The set may be configured to obtain the locked position by displacing the first panel 1 relative to the second panel 2 in an assembly direction AD, which may be essentially parallel to the first panel surface 13 and to the axial direction CA and / or length direction L of the rod-shaped elements 31.

[0036] According to some embodiments of the invention, the fourth angle δ may be between about 45° and about 90° greater than the second angle β.

[0037] The locking of the first panel 1 to the second panel 2 in a direction parallel to the second panel surface 23 can be achieved by inserting the locking portion 34 into the locking groove 35 and locking it against the locking surface 37 .

[0038] In embodiments where the locking groove 35 is a drilled hole, the locking surface 37 may be part of the cylindrical surface of the drilled hole.

[0039] 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°.

[0040] 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°.

[0041] According to an embodiment of the invention, the second angle β and the third angle γ may be essentially the same.

[0042] The second angle β may be measured in a plane parallel to the first panel surface 13 .

[0043] 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 .

[0044] When the locking groove 35 is located on the second edge surface 21, the fourth angle δ may be measured in the same plane as the third angle described above. When the locking groove 35 is located on the first edge surface 11, the fourth angle δ may be measured in the same plane as the second angle described above.

[0045] 1A, 2A, and 2B, the first panel 1 may have a first panel groove 14 on a first panel surface 13, and the second panel 2 may have a second panel groove 24 on a second panel surface 23. The first panel groove 14 and the second panel groove 24 may align when the first panel 1 and the second panel 2 are assembled together. The first panel groove and the second panel groove may be configured to optionally cooperate with the first panel groove 14, 24 so that the back panel 3 can be inserted into the first panel groove 14, 24.

[0046] The first panel groove 14 and / or the second panel groove 24 may be bottom ends.

[0047] The set may be configured to form furniture without a back panel. A set without the first and second panel grooves 14, 24 is disclosed in Figure 1B.

[0048] 2B discloses the set during assembly when the first and second panels 1, 2 are assembled together and the locking portion 34 may be compressed and may be substantially positioned in the locking portion groove 38. The locking portion 34 may include a spring that facilitates compression of the locking portion 34.

[0049] When the first panel 1 is displaced relative to the second panel 2 in the assembly direction AD, the rod-shaped element 31 is inserted into the insertion groove 32. When the locking portion 34 is fitted into the locking groove 35, the locking portion 34 can bulge axially from the locking portion groove 38 and protrude into the locking groove 35. The positioning of the portion of the locking portion 34 in the locking groove 35 prevents the first panel 1 from being displaced relative to the second panel 2 in the direction opposite to the assembly direction, so that the first panel 1 and the second panel 2 are locked together.

[0050] 3A discloses a portion of the first panel 1 according to an embodiment of the invention. The mechanical locking device may include at least two rod-shaped elements 31.

[0051] According to an embodiment of the invention, the mechanical locking device may include two or more rod-like elements 31 arranged in a line, primarily parallel to the first edge surface or the second edge surface.

[0052] To improve the strength of the mechanical locking device, the row of rod-like elements 31 may be positioned closer to the inner corner of the set than to the outer corner, i.e., the row may be positioned between the centerline of the first panel 1 and the intersection of the first panel surface 13 and the joining plane J.

[0053] The rod-shaped elements 31 may be arranged in rod element grooves 36 in the first edge surface 11 .

[0054] The rod-shaped elements 31 may be configured to be attached to the rod element grooves 36 by friction.

[0055] According to an embodiment of the invention, the rod-shaped elements 31 may be configured to be glued into the rod element grooves 36 .

[0056] According to one embodiment of the invention, 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.

[0057] According to an embodiment, the rod-shaped elements 31 are made from one or more of a wood-based material, a polymer material which may contain reinforcements such as glass fibre, or a metal.

[0058] According to one embodiment, the rod-shaped elements 31 may have a waxed surface to facilitate assembly.

[0059] 3B discloses a portion of the second panel 2 according to an embodiment of the invention. The insertion groove 32 and / or the rod element groove 36 may be drilled holes.

[0060] According to an embodiment of the invention, the drilled hole is a bottom-end drilled hole.

[0061] The insertion groove 32 may have a chamfer 33 or a rounded portion at the groove opening, which is configured to guide the rod-shaped element 31 during assembly.

[0062] Two or more insertion grooves 32 may be arranged in a row that is primarily parallel to the first edge surface or the second edge surface 11, 22.

[0063] To improve the strength of the mechanical locking device, the row of insertion grooves 32 may be positioned closer to the inner corner of the set than to the outer corner, i.e., the row may be located between the centerline CL of the second edge surface 21 and the intersection of the second panel surface 23 and the joining plane J.

[0064] 4A-5B show a set in a locked position according to an embodiment of the invention. The first angle α between the joining plane J and the first major plane 10 may be approximately 45°. For sets in which the first and second panels 1, 2 have different thicknesses, a different angle may be preferred. 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. 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.

[0065] The outer corners of the first panel 1 and the second panel 2 at the joining plane J may include a chamfered edge, preferably covered with a decorative layer, which may increase the strength of the corners. The decorative layer may be a plastic foil, a veneer or a paint.

[0066] According to some embodiments of the invention, the locking portion 34 may be flexible.

[0067] The locking portion 34 may be configured to partially reside in the locking groove 35 in the unflexed / uncompressed state.

[0068] The locking portion 34 may include a spring.

[0069] The locking portion 34 may be disposed on the first edge surface 11 or the second edge surface 21 in the locking portion groove 38 .

[0070] The rod-shaped element 31 may have a diameter D1. The diameter D2 of the insertion groove 32 may be larger than the diameter D1 of the rod-shaped element 31. For optimal assembly, the diameter D2 of the insertion groove 32 may be approximately 0.3 to approximately 0.8 mm larger than the diameter D1 of the rod-shaped element 31.

[0071] Figure 6 discloses a first panel according to an embodiment of the invention, and Figure 7 discloses a second panel according to an embodiment of the invention. The first or second edge surface 11, 21 may include a tongue 22, the tongue may include a first tongue surface 25 and a second tongue surface 26, and the other of the opposing first or second edge surface 11, 21 may include a tongue groove 12.

[0072] The tongue 22 and / or tongue groove 12 may extend along essentially the entire panel edge.

[0073] Figure 8A discloses a side view of a set according to an embodiment of the invention, which may be an embodiment of the set of panels shown in Figures 6 and 7. 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 in the locked position.

[0074] The first space 27 may have the effect of avoiding gaps at the inner and outer corners of the joining plane J between the first and second edge surfaces 11, 22, since greater contact pressure may be obtained at the inner and outer corners. A first or second panel 1, 2 including a tongue groove 12 may be combined with a first or second panel 1, 2 without a tongue 22, forming a joint including a space between the first or second edge surface 11, 22 and the tongue groove 12.

[0075] A first panel 1 including a tongue groove 12 may form a set with a second panel 2 having a tongue groove 12' that forms a joint including the space between the tongue groove 12 and the tongue groove 12'.

[0076] According to an embodiment of the invention, the tongue groove 12 may include one or more rod-shaped elements 31 .

[0077] The tongue 22 may include one or more insertion grooves 32. Positioning the insertion grooves 32 at least partially in the tongue 22 may increase the engagement area of ​​the rod-shaped element 31 and the insertion grooves 32. The advantage may be greater stability of the joint.

[0078] 8B discloses an article of furniture comprising two first panels 1, two second panels 2, and a back panel 3. The back panel 3 may be configured to be inserted into and optionally cooperate with the first and second panel grooves 14, 24.

[0079] The furniture item may be a bookcase, a cupboard, a wardrobe, a chest or a drawer.

[0080] According to an embodiment of the invention, the first panel 1 may include one first edge surface 11 and one second edge surface 22 .

[0081] According to one embodiment of the invention, the first and second panels 1, 2 may be essentially identical. In this embodiment, the first panel comprises a first edge surface 11 and a second edge surface 21 on opposite sides of the first panel. The above-described embodiment makes it possible to create a furniture frame having four essentially identical panels.

[0082] The side walls of the insertion groove 32 and locking groove 35 may comprise material of the core of the first panel 1 or the second panel 2, depending on which panel they are made from.

[0083] According to an embodiment of the invention, the insertion groove 32 and / or the rod element groove 36 may be reinforced with a plastic, for example of a thermoplastic article, and / or a liquid, for example of a PVAc-adhesive.

[0084] The insertion groove 32 and / or the rod element groove 36 may be reinforced with a metal such as zinc or a zinc alloy.

[0085] The core of the first panel 1 and / or the core of the second panel 2 and / or the back panel 3 may be a wood-based core such as MDF, HDF, OSB, WPC, plywood or particle board, or may be a plastic core including a thermoset or thermoplastic, such as vinyl, PVC, PU or PET, which may contain a filler.

[0086] The first panel 1 and / or the second panel 2 and / or the back panel 3 may be solid wood.

[0087] The first panel 1 and / or the second panel 2 and / or the back panel 3 may be provided with a decorative layer such as a foil or veneer on one or more sides.

[0088] According to one aspect, the set of panels may be resilient panels. The resilient panels may have a core comprising a thermoplastic material. The thermoplastic material may be foamed.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] The above-described embodiments may include a wood-based core such as HDF, MDF, plywood, particle board, OSB, or Masonite.

[0093] The different aspects, embodiments and alternatives described above may be combined with one or more of the other described aspects, embodiments and alternatives.

[0094] Further embodiments of the invention are described below.

[0095] 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, and a mechanical locking device for locking the first edge surface 11 of the first panel 1 to the 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, and the joining plane J extends at a first angle α to the first main plane 10; the mechanical locking device comprises 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 at least one locking groove 35 in the first edge surface 11 or the second edge surface 21 and at least one locking portion 34 in the other of the first edge surface or the second edge surface, the locking groove 35 including at least one locking surface 37 extending from the first edge surface 11 or the second edge surface 21 at a fourth angle δ, the locking portion 34 being configured to be inserted into the locking groove 35 and lock against the locking surface 37, the second angle β being different from the fourth angle δ; The first angle α between the joining plane J and the first main plane 10 is optionally about 45°.

[0096] 2. The set according to embodiment 1, wherein the mechanical locking device is configured to obtain the locked position by displacing the first panel 1 relative to the second panel 2 in an assembly direction AD that is essentially parallel to the first panel surface 13 and essentially parallel to the longitudinal direction L and / or axial direction CA of the rod-shaped element 31.

[0097] 3. The set according to embodiment 1 or 2, wherein the fourth angle δ is greater than the second angle β by about 45° to about 90°.

[0098] 4. The set according to any one of the preceding embodiments, wherein the second angle β is in the range of approximately 30° to 60°, or in the range of 40° to 50°, or approximately 45°.

[0099] 5. A set according to any one of the previous embodiments, wherein the mechanical locking device comprises at least two rod-shaped elements 31.

[0100] 6. A set according to any one of the preceding embodiments, wherein the mechanical locking device comprises two or more rod-shaped elements 31 arranged in a row, primarily parallel to the first edge surface or the second edge surface.

[0101] 7. The set according to any one of the previous embodiments, wherein the rod-shaped elements 31 are arranged in rod element grooves 36 in the first edge surface 11.

[0102] 8. The set according to any one of the previous embodiments, wherein the insertion groove 32 and / or the rod element groove 36 are drilled holes.

[0103] 9. The set of embodiment 8, wherein the drilled holes are bottom-end drilled holes.

[0104] 10. The set according to any one of the preceding embodiments, wherein the locking portion 34 is flexible.

[0105] 11. The set according to any one of the previous embodiments, wherein the locking portion 34 in an unbent / uncompressed state is configured to be partially located in the locking groove 35.

[0106] 12. The set according to any one of the previous embodiments, wherein the locking portion 34 comprises a spring.

[0107] 13. The set according to any one of the previous embodiments, wherein the locking portion 34 is arranged on the first edge surface 11 or the second edge surface 21 in the locking portion groove 38.

[0108] 14. A set according to any one of the preceding embodiments, wherein the first or second edge surface 11, 21 has a tongue 22, the tongue having a first tongue surface 25 and a second tongue surface 26, and the other of the opposite first or second edge surfaces 11, 21 has a tongue groove 12.

[0109] 15. The set according to embodiment 14, 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 in the locked position.

[0110] 16. The set according to embodiment 14 or 15, wherein the tongue groove 12 comprises one or more rod-shaped elements 31.

[0111] 17. A set according to any one of the preceding embodiments, wherein the first panel 1 has a first panel groove 14 on the first panel surface 13, and the second panel 2 has a second panel groove 24 on the second panel surface 23.

[0112] 18. A set as described in embodiment 17, further comprising a back panel 3 configured to be inserted into the first and second panel grooves 14, 24 and optionally to cooperate with the first and second panel grooves 14, 24.

[0113] 19. A set according to any one of the previous embodiments, wherein the insertion groove 32 and / or the rod element groove 36 are reinforced by a plastic, such as a thermoplastic, and / or by a liquid, such as a PVAc adhesive.

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), and a mechanical locking device having a joining plane (J), the mechanical locking device being configured to lock a first edge surface (11) of the first panel (1) against a second edge surface (21) of the second panel (2) at the joining plane (J), the first main plane (10) being essentially perpendicular to the second main plane (20), and the joining plane (J) extending at a first angle (α) to the first main plane (10), the mechanical locking device comprises 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 into the second edge surface (21) at a third angle (γ) from the second edge surface (21); the mechanical locking device further comprises at least one locking groove (35) in the first edge surface (11) or the second edge surface (21) and at least one locking portion (34) in the other of the first edge surface or the second edge surface, the locking groove (35) including at least one locking surface (37) extending from the first edge surface (11) or the second edge surface (21) at a fourth angle (δ), the locking portion (34) configured to be inserted into the locking groove (35) and lock against the locking surface (37), the second angle (β) being different from the fourth angle (δ); the first angle (α) between the joining plane (J) and the first major plane (10) is about 45°; the mechanical locking device is configured to obtain a locked position by displacing the first panel (1) relative to the second panel (2) in an assembly direction (AD) that is essentially parallel to the first panel face (13) and essentially parallel to the longitudinal direction (L) and / or the axial direction (CA) of the rod-shaped element (31); the second angle (β) is in the range of about 30° to 60°, or in the range of 40° to 50°, or about 45°; set.

2. 2. The set of claim 1, wherein the fourth angle (δ) is between about 45° and about 90° greater than the second angle (β).

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

4. The set according to any one of claims 1 to 3, wherein the mechanical locking device includes two or more rod-shaped elements (31) arranged in a row mainly parallel to the first edge surface or the second edge surface.

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) in the first edge surface (11).

6. 6. The set according to claim 5, wherein the insertion groove (32) and / or the rod element groove (36) are drilled holes.

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

8. A set according to any one of claims 1 to 7, wherein the locking portion (34) is flexible.

9. 9. The set according to claim 8, wherein the locking portion (34) in an unbent / uncompressed state is configured to partially lie in the locking groove (35).

10. A set according to any one of the preceding claims, wherein the locking portion (34) comprises a spring.

11. The set according to any one of claims 1 to 10, wherein the locking portion (34) is arranged on the first edge surface (11) or on the second edge surface (21) in a locking portion groove (38).

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 (22), the tongue 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) in the locked position.

14. 14. The set according to any one of claims 1 to 13, wherein the first panel (1) has a first panel groove (14) in the first panel surface (13) and the second panel (2) has a second panel groove (24) in the second panel surface (23), the set further comprising a back panel (3) configured to be inserted into the first panel groove and the second panel groove (14, 24) and optionally to cooperate with the first panel groove and the second panel groove (14, 24).

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