Panel set with mechanical locking device

Abstract

A set is described that includes a first panel (10), a second panel (20), and a mechanical locking device for locking the first panel (10) to the second panel (20). The first panel (10) has a first edge surface (11), and the second panel (20) has a second panel surface (22), and in a locked state between the first panel (10) and the second panel (20), the first edge surface (11) faces the second panel surface (22), and the mechanical locking device includes at least one rod-shaped element (31) on the first edge surface (11) and at least one insertion groove (32) on the second panel surface (22), and the rod-shaped element (31) is configured to be inserted into the insertion groove (32). The mechanical locking device further comprises a first locking groove (12) in the first edge surface (11), at least one second locking groove (13) in the second panel surface (22), and at least one locking portion (34), the locking portion (34) being configured to be inserted into the first locking groove (12) and the second locking groove (13). The locking portion (34) is configured to apply a locking force between the first panel (10) and the second panel (20) in a diagonal direction (D3) relative to the second panel surface (22).

Description

Technical Field

[0001] Embodiments of the present invention relate to panels configured to be locked to each other by a mechanical locking device. The panels can be assembled and locked to each other to obtain furniture products such as bookshelves, cupboards, wardrobes, boxes, drawers, or furniture parts.

Background Art

[0002] Furniture products having a mechanical locking device are disclosed in PCT / SE2019 / 050801 or PCT / SE2019 / 050802. The above-mentioned furniture product includes a first panel that is vertically connected to a second panel by a mechanical locking device including a rod-shaped element extending at an angle.

[0003] The above description of various known aspects is the applicant's characteristic evaluation, and it is not admitted that any of the above descriptions is considered as prior art.

[0004] Embodiments of the present invention address the need to provide panels that can be easily assembled and have a mechanical locking device with improved rigidity and strength.

Summary of the Invention

[0005] An object of an aspect of the present invention is to provide an improvement over the above-mentioned technology and prior art. A specific goal is to improve the assembly of panels such as furniture panels locked to each other by a mechanical locking device. The panel can be part of a furniture product such as a furniture part, a drawer, a cupboard, a bookshelf, a wardrobe, a kitchen utensil, or a box.

[0006] A further object of at least a specific aspect of the present invention is to simplify the assembly of panels configured to be assembled by a locking device that is easy to manufacture and use.

[0007] A further objective of at least certain aspects of the present invention is to simplify the assembly of a panel configured to be assembled by a locking device that is easy to manufacture and use and reduces the risk of incorrect attachment.

[0008] A further objective of at least certain aspects of the present invention is to simplify the assembly of a panel configured to be assembled in a more stable and aesthetic manner.

[0009] At least some of these and other objectives and advantages that will become apparent from the description are achieved by a set comprising a first panel, a second panel, and a mechanical locking device for locking the first panel to the second panel, wherein the first panel comprises a first edge surface, the second panel comprises a second panel surface, and in the locked state of the first panel and the second panel, the first edge surface faces the second panel surface, the mechanical locking device comprises at least one rod-shaped element on the first edge surface and at least one insertion groove on the second panel surface, the rod-shaped element is configured to be inserted into the insertion groove, the mechanical locking device further comprises a first locking groove on the first edge surface, at least one second locking groove on the second panel surface, and at least one locking part, the locking part is configured to be inserted into the first locking groove and the second locking groove, and the locking part is configured to apply a locking force in an oblique direction with respect to the second panel surface between the first panel and the second panel.

[0010] According to one aspect, the oblique direction forms an acute angle with respect to the second panel surface.

[0011] According to one aspect, the set is configured to lock the first panel to the second panel with the first panel surface perpendicular or essentially perpendicular to the second panel surface.

[0012] According to one aspect, the locking part is configured to pull the first panel and the second panel towards each other in the assembly direction.

[0013] According to one aspect, the diagonal direction is essentially parallel to the length direction and / or the axial direction of the rod-shaped element.

[0014] According to one aspect, the rod-shaped element is configured to cooperate with the insertion groove during assembly to guide both the first panel and the second panel.

[0015] According to one aspect, the rod-shaped element is configured to cooperate with the insertion groove to displace the second panel surface in a first direction and / or a second direction with respect to the first edge surface, thereby guiding the first panel and the second panel into the locked state.

[0016] According to one aspect, the rod-shaped element extends from the first edge surface at a first angle, and the first angle is within the range of about 10° to 80°, preferably within the range of about 40° to 50°, or preferably about 45°.

[0017] According to one aspect, the insertion groove extends into the second panel surface at a second angle from the second panel surface, and the second angle is within the range of about 10° to 80°, preferably within the range of about 40° to 50°, or preferably about 45°.

[0018] According to one aspect, the first locking groove extends from the first edge surface at a third angle, and the third angle is within the range of about 10° to 80°, preferably within the range of about 40° to 50°, or preferably about 45°.

[0019] According to one aspect, the second locking groove extends from the second panel surface at a fourth angle, and the fourth angle is within the range of about 10° to 80°, preferably within the range of about 40° to 50°, or preferably about 45°.

[0020] According to one aspect, the first angle, the second angle, the third angle, and the fourth angle are essentially the same. For example, the first angle, the second angle, the third angle, and the fourth angle can be within 2° of each other. Further, the first angle, the second angle, the third angle, and the fourth angle can be the same.

[0021] According to one aspect, all of the first angle, the second angle, the third angle, and the fourth angle are ≠ 90°.

[0022] According to one aspect, the locking portion is a screw.

[0023] According to one aspect, the screw extends into the second panel during assembly.

[0024] According to one aspect, the first locking groove extends from the second edge surface to the first edge surface.

[0025] According to one aspect, the locking portion is of the cam / dovetail connector type.

[0026] According to one aspect, the cam / dovetail connector includes at least one bolt and at least one connector housing.

[0027] According to one aspect, before assembling the first panel and the second panel, the bolt of the cam / dovetail connector is disposed in the first locking groove.

[0028] According to one aspect, the connector housing is disposed in the first opening of the first panel.

[0029] According to one aspect, the set includes a first panel groove on the first panel surface of the first panel and a second panel groove on the second panel surface of the second panel.

[0030] According to one aspect, the set further comprises a back panel configured to be inserted into and selectively cooperate with the first panel groove and the second panel groove.

[0031] According to one aspect, the first opening is disposed between the panel groove and the second edge surface.

[0032] According to one aspect, the insertion groove, the first locking groove, the second locking groove, and / or the first opening are drill holes.

[0033] According to one aspect, the drill hole is a bottomed drill hole.

[0034] According to one aspect, the locking portion is configured to cooperate with the first locking groove and / or the second locking groove.

[0035] According to one aspect, the first edge surface has one first locking groove, and the second panel surface has one second locking groove.

[0036] According to one aspect, the rod-shaped element is disposed in a rod element groove on the first edge surface.

[0037] According to one aspect, the number of rod-shaped elements on the first edge surface is the same as the number of insertion grooves on the second panel surface.

[0038] The core of the first panel and / or the second panel may preferably be a wood-based core composed of MDF, HDF, OSB, WPC, plywood or particle board. Also, the core may be a plastic core composed of a thermosetting plastic or a thermoplastic, such as vinyl, PVC, PU, or PET. The plastic core may contain a filler.

[0039] The first panel and / or the second panel may be solid wood.

[0040] The first panel and / or the second panel may be provided with a decorative layer such as foil or veneer on one or more surfaces.

[0041] These and other aspects, features, and advantages of the embodiments of the present invention will become apparent and be elucidated from the following description of the embodiments and aspects of the present invention made with reference to the accompanying drawings.

Brief Description of the Drawings

[0042]

Figure 1A

Figure 1B

Figure 2A

Figure 2B

Figure 3

Figure 4A

Figure 4B

Figure 5A

Figure 5B

Figure 5C

Figure 6A

Figure 6B

Figure 7A

Figure 7B

[0043] Specific embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention can be embodied in many different forms and should not be construed as limited to the embodiments described 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 terms used in the detailed description of the embodiments illustrated in the accompanying drawings are not intended to limit the present invention. In the drawings, like reference numerals refer to like elements.

[0044] The terms used herein are for the purpose of describing particular aspects of this disclosure only and are not intended to limit this disclosure. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0045] In the drawings and the specification, exemplary embodiments of the present disclosure have been disclosed. However, many variations and modifications can be made to these embodiments without substantially departing from the principles of the present disclosure. Therefore, the present disclosure should be considered exemplary rather than restrictive, and is not limited to the specific embodiments described above. Therefore, although specific terms are employed, they are used only in a general and descriptive sense and not for purposes of limitation. For example, the definition of dimensions such as width or breadth or height or length or diameter will vary depending on how the exemplary embodiments are depicted. Thus, if depicted in different embodiments, a width or diameter shown in one depiction may be a length or thickness in another depiction.

[0046] It should be noted that the word "comprising" does not necessarily exclude the presence of other elements or steps than those described, and the words "a" or "an" preceding an element do not exclude the presence of a plurality of such elements. Further, any reference signs do not limit the scope of the claims, and it should be noted that the exemplary embodiments may be at least partially implemented by means of both hardware and software, and that a plurality of "means", "units" or "devices" may be represented by the same item of hardware.

[0047] The 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.

[0048] Embodiments of the present invention are shown in FIGS. 1 to 6. An embodiment of the present invention includes a set including a first panel 10, a second panel 20, and a mechanical locking device for locking the first panel 10 to the second panel 20. The first panel 10 includes a first panel surface 16 and a first edge surface 11. The second panel 20 includes a second panel surface 22. In the locked state of the first panel 10 and the second panel 20, the first edge surface 11 faces the second panel surface 22. The mechanical locking device includes at least one rod-shaped element 31 on the first edge surface 11 and at least one insertion groove 32 on the second panel surface 22. The rod-shaped element 31 is configured to be inserted into the insertion groove 32. The mechanical locking device further includes at least one first locking groove 12 on the first edge surface 11, at least one second locking groove 13 on the second panel surface 22, and at least one locking portion 34. The locking portion 34 is configured to be inserted into the first locking groove 12 and the second locking groove 13. The locking portion 34 is configured to apply a locking force in an oblique direction D3 with respect to the second panel surface 22 between the first panel 10 and the second panel 20. The locking force at least acts to prevent the first panel from separating from the second panel.

[0049] The oblique direction D3 may form an acute angle with respect to the second panel surface 22.

[0050] The first panel 10 and the second panel 20 are preferably panels for furniture products and can be part of the frame of a furniture product.

[0051] The set is preferably configured to lock the first panel 10 to the second panel 20 with the first panel surface 16 perpendicular or essentially perpendicular to the second panel surface 22.

[0052] The first panel 10 may include a third panel surface 54 on the opposite side of the first panel surface 16. The second panel 20 may include a fourth panel surface 55 on the opposite side of the second panel surface 22.

[0053] In the locked state of the first panel 10 and the second panel 20, the first panel surface 16 preferably contacts the second panel surface 22.

[0054] The first panel surface 16 preferably contacts the second panel surface 22 at the inner corner of the assembled set.

[0055] Figures 1 to 2A, 4A, 6A and 6B disclose a set according to an embodiment in an unassembled state. The set can be assembled by displacing the first panel 10 relative to the second panel 20 in the assembly direction AD. Figures 2B, 3, 4B, 5A to 5C disclose a set according to an embodiment in an assembled state.

[0056] The locking portion 34 can be configured to draw the first panel 10 and the second panel 20 closer to each other in the assembly direction AD.

[0057] The diagonal direction D3 can be essentially parallel to the length direction L and / or the axial direction CA of the rod-shaped element 31. For example, the diagonal direction D3 can be within 2° of the length direction L and / or the axial direction CA of the rod-shaped element 31. Further, the diagonal direction D3 can be parallel to the length direction L and / or the axial direction CA of the rod-shaped element 31.

[0058] The rod-shaped element 31 can be configured to guide the first panel 10 and the second panel 20 together in cooperation with the insertion groove 32 during assembly. The rod-shaped element 31, in cooperation with the insertion groove 32, can be configured to guide the first panel 10 and the second panel 20 into a locked state by displacing the second panel surface 22 relative to the first edge surface 11 in the first direction D1 and / or the second direction D2.

[0059] The rod-shaped element 31 can extend from the first edge surface 11 at a first angle α1. The first angle α1 is in the range of about 10° to 80°, preferably in the range of about 40° to 50°, or preferably about 45°.

[0060] The rod-shaped element 31 can be disposed in the rod element groove 35 of the first edge surface 11.

[0061] The number of rod-shaped elements 31 on the first edge surface 11 may be the same as the number of insertion grooves 32 on the second panel surface 22.

[0062] The rod-shaped element 31 may have a surface processed with wax so as to facilitate assembly.

[0063] According to one aspect, the rod-shaped element 31 may be configured to be attached to the rod element groove 35 by friction.

[0064] According to one aspect, the rod-shaped element 31 may be configured to adhere to the rod element groove 35.

[0065] According to one aspect, the rod-shaped element 31, the rod element groove 35, and the insertion groove 32 have a substantially circular shape, but other shapes such as triangular, rectangular, and square are also possible. When the rod-shaped element has a circular shape, the length direction L of the rod-shaped element 31 and the axial direction CA are the same.

[0066] According to one aspect, the rod-shaped element 31 is composed of one or more of a wood-based material, preferably a polymer material containing a reinforcing material such as glass fiber, or a metal.

[0067] The side walls of the insertion groove 32, the locking groove 35, the first locking groove (12), and the second locking groove (13) may be composed of the core material of the first panel 10 or the second panel 20 depending on whether they are formed on the first panel 10 or the second panel 20. According to one aspect, the side walls can also be reinforced with a plastic material such as a thermoplastic material, a metal, and / or glass fiber.

[0068] The first edge surface 11 may include one or more of the rod-shaped elements 31. The second panel surface 22 may include one or more of the insertion grooves 32. The reverse is also true. Three or more of the rod-shaped elements and the insertion grooves 32 may be arranged linearly. Each of the rod-shaped elements 31 is configured to be inserted into one of the insertion grooves 32.

[0069] The insertion groove 32 may extend into the second panel surface 22 at a second angle α2 from the second panel surface 22. The second angle α2 is within a range of about 10° to 80°, preferably within a range of about 40° to 50°, or preferably about 45°.

[0070] The first locking groove 12 may extend from the first edge surface 11 at a third angle β. The third angle β is within a range of about 10° to 80°, preferably within a range of about 40° to 50°, or preferably about 45°.

[0071] The second locking groove 13 may extend from the second panel surface 22 at a fourth angle γ. The fourth angle γ is within a range of about 10° to 80°, preferably within a range of about 40° to 50°, or preferably about 45°.

[0072] The first angle α1, the second angle α2, the third angle β, and the fourth angle γ may be essentially the same. For example, the first angle, the second angle, the third angle, and the fourth angle may be within 2° of each other. Further, the first angle, the second angle, the third angle, and the fourth angle may be the same. The first angle α1, the second angle α2, the third angle β, and the fourth angle γ may all be ≠ 90°.

[0073] In one embodiment, as shown in FIGS. 1B and 2B, the locking portion 34 is a screw. The screw may extend into the second panel 20 during assembly.

[0074] The second locking groove 13 in the second panel surface 22 need not be a groove or drill hole having the same width as the locking portion 34 and / or the same depth as the intended range of the locking portion 34 on the second panel. For example, particularly with respect to embodiments in which the locking portion is a screw, it may be a small recess that can guide the locking portion 34 to the correct location.

[0075] The first locking groove 12 may extend from the second edge surface 17 to the first edge surface 11.

[0076] In one embodiment, as shown in FIGS. 1A, 3, 4A - 5C, the locking portion 34 is of the cam / dovetail - connector type. The cam / dovetail - connector may comprise at least one connecting element 51, such as a bolt, and at least one connector housing 52.

[0077] The cam / dovetail - connector may comprise an enlarged portion 56. The enlarged portion 56 is configured to expand within the second locking groove 13 such that the enlarged portion 56 is attached to the second locking groove 13. The connecting element 51 may extend from the connector housing 52 to the enlarged portion 56.

[0078] The connector housing 52 may be disposed in the first opening 40 of the first panel 10.

[0079] Before assembly of the first panel 10 and the second panel 20, the bolt 51 of the cam / dovetail - connector may be disposed in the first locking groove 12. This is shown in the embodiments of FIGS. 1A and 4A.

[0080] Cam / dovetail - connectors are known in the technical field of furniture assembly. The cam may be a cylindrical lock having an opening for the dovetail. The latching cam / connector housing may operate by a typically 90 - or 180 - degree rotational movement of an eccentric or wedge acting on the head of the dovetail. The dovetail is typically a bolt, pin, or screw.

[0081] In operation, the cam / dovetail connector draws the second panel surface 22 towards the first edge surface 11 in a first direction D1, and the rod-shaped element 31 can be configured to cooperate with the insertion groove 32 to lock the first panel 10 and the second panel 20 in a second direction D2. Thereby, the advantage can be obtained that the locking part 34 can be arbitrarily arranged along the panel edge 11, preferably in a less conspicuous place of the assembled furniture. Further, by using only one locking part 34, the first panel and the second panel can be locked, and a strong locking along the entire panel edge of the first panel 10 and the second panel 20, which may include one or more rod-shaped elements 31, can be obtained.

[0082] As shown in FIGS. 1A-2A and 6A, the set may comprise a first panel groove 15 in the first panel surface 16 of the first panel 10 and a second panel groove 23 in the second panel surface 22 of the second panel 20. The set may further comprise a back panel 30 inserted into the first panel groove 15 and the second panel groove 23 and configured to selectively cooperate with them.

[0083] As shown, for example, in FIGS. 1A, 3 and 5A, the first opening 40 may be arranged between the panel groove 15 and the second edge surface 17. Thereby, the locking device is no longer visible after the panel is assembled, but is hidden behind the back panel 30 if the back panel 30 is present, so an aesthetic result is obtained.

[0084] FIG. 5B shows that the locking groove 12 may be arranged below the panel groove 15. The first panel 10 may comprise a third panel surface 54 on the opposite side of the first panel surface 16. The locking groove may be arranged between the bottom surface 53 of the panel groove 15 and the third panel surface.

[0085] FIG. 5C shows an enlarged side view of a part of an embodiment of the set. In this embodiment, the first opening 40 may be arranged in the second edge surface 17 of the first panel 10.

[0086] As shown in FIGS. 4A to 4B, in the non-locked state and the locked state, the first opening 40 can be in a position not hidden by the back panel 30. Therefore, the first opening 40 and, for example, a cam inserted therein may be visible.

[0087] The insertion groove 32, the first locking groove 12, the second locking groove 13, and / or the first opening 40 can be drill holes. The drill holes can be bottomed drill holes.

[0088] The locking portion 34 can be configured to cooperate with the first locking groove 12 and / or the second locking groove 13. For example, the locking portion 34 can engage with the side wall of the first locking groove and / or the side wall of the second locking groove to generate a pulling force in the second direction D2. In one embodiment, the locking portion 34 can engage with the side wall of the second locking groove but not with the side wall of the first locking groove to generate a pulling force in the second direction D2. Thereby, a cooperative locking of the first panel 10 to the second panel 20 is obtained.

[0089] In one embodiment, the first edge surface 11 can have one first locking groove 12, and the second panel surface can have one second locking groove 13. According to this embodiment, only one locking portion 34 is required to lock the first panel 10 to the second panel 20.

[0090] According to one aspect, the first panel 10 and the second panel 20 can be assembled by displacing the first panel 10 relative to the second panel 20 in a direction essentially parallel to the second panel surface 22. The last part of the assembly can be made in a direction essentially parallel to at least one of the first angle α1, the second angle α2, the third angle β, and the fourth angle γ.

[0091] Figures 7A - 7B show another perspective view of an embodiment of a set of panels according to the present invention in a locked state. This embodiment includes two of said first panels 10 and two of said second panels 20, assembled, for example, as a furniture frame. This embodiment further includes a back panel 30 assembled to the frame. When the panels are assembled, they are not visible from the sides and the front, and a very aesthetically pleasing result is obtained. Some parts of the mechanical locking device may be visible from the back of this embodiment.

[0092] The core of the first panel 10 and / or the second panel 20 may preferably be a wood-based core composed of MDF, HDF, OSB, WPC, plywood or particle board. Also, the core may be a plastic core composed of a thermosetting plastic or a thermoplastic, for example, vinyl, PVC, PU, or PET. The plastic core may include a filler.

[0093] The first panel 10 and / or the second panel 20 may be solid wood.

[0094] The first panel 10 and / or the second panel 20 may be provided with a decorative layer such as foil or veneer on one or more surfaces.

[0095] According to one aspect, the set of panels is an elastic panel. The elastic panel may include a core composed of a thermoplastic material. The thermoplastic material may be foamed.

[0096] The thermoplastic material may be composed of 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 from multiple layers.

[0097] The above-described aspect may include a decorative layer such as a decorative foil made of a thermoplastic material. The thermoplastic material of the decorative layer can be, or can be composed of, 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 is preferably printed, for example, by direct printing, gravure printing, or digital printing. According to one aspect, the decorative layer consists of melamine, high-pressure laminate (HPL), or veneer.

[0098] The above-described aspect may include a wear layer such as a film or foil. The wear layer can be composed of a thermoplastic material. The thermoplastic material can be, or can be a combination of, polyvinyl chloride (PVC), polyester, polypropylene (PP), polyethylene (PE), polystyrene (PS), polyurethane (PU), polyethylene terephthalate (PET), polyacrylate, methacrylate, polycarbonate, polyvinyl butyral, polybutylene terephthalate.

[0099] The above-described aspect may include a wood-based core such as HDF, MDF, plywood, particle board, OSB, or Masonite.

[0100] The various aspects, embodiments, and alternatives described above can be combined with one or more other aspects, embodiments, and alternatives.

Claims

1. A set comprising a first panel (10), a second panel (20), and a mechanical locking device for locking the first panel (10) to the second panel (20), - The first panel (10) comprises a first edge surface (11), - The second panel (20) comprises a second panel surface (22), - In the locked state of the first panel (10) and the second panel (20), the first edge surface (11) faces the second panel surface (22), - The mechanical locking device comprises at least one rod-shaped element (31) on the first edge surface (11) and at least one insertion groove (32) on the second panel surface (22), - The rod-shaped element (31) is configured to be inserted into the insertion groove (32), - The mechanical locking device further comprises a first locking groove (12) on the first edge surface (11), at least one second locking groove (13) on the second panel surface (22), and at least one locking portion (34), The locking portion (34) is configured to be inserted into the first locking groove (12) and the second locking groove (13), In the set, - The locking portion (34) is configured to apply a locking force in an oblique direction (D3) with respect to the second panel surface (22) between the first panel (10) and the second panel (20), and the locking portion (34) is configured to pull the first panel (10) and the second panel (20) towards each other in the assembly direction (AD). The oblique direction (D3) forms an acute angle with respect to the second panel surface (22), The rod-shaped element (31) extends from the first edge surface (11) at a first angle (α1), The insertion groove (32) extends into the second panel surface (22) from the second panel surface (22) at a second angle (α2), The first locking groove (12) extends from the first edge surface (11) at a third angle (β), The second locking groove (13) extends from the second panel surface (22) at a fourth angle (γ), The first angle (α1), the second angle (α2), the third angle (β), and the fourth angle (γ) are within 2° of each other, The first angle (α1) is in the range of 10° to 80°, characterized by a set.

2. The diagonal direction (D3) is parallel to the length direction (L) and / or the axial direction (CA) of the rod-shaped element (31), The set according to claim 1.

3. The rod-shaped element (31) is configured to cooperate with the insertion groove (32) during assembly to guide the first panel (10) and the second panel (20) into an engaged state together. The set according to claim 1 or claim 2.

4. The rod-shaped element (31) cooperates with the insertion groove (32) to displace the second panel surface (22) in a first direction (D1) and / or a second direction (D2) with respect to the first edge surface (11), thereby guiding the first panel (10) and the second panel (20) into the locked state. The set according to any one of claims 1 to 3.

5. The first angle (α1) is in the range of 40° to 50°, preferably 45°. The set according to any one of claims 1 to 4.

6. The second angle (α2) is in the range of 10° to 80°, preferably in the range of 40° to 50°, or preferably 45°. The set according to any one of claims 1 to 5.

7. The third angle (β) is in the range of 10° to 80°, preferably in the range of 40° to 50°, or preferably 45°. The set according to any one of claims 1 to 6.

8. The fourth angle (γ) is within the range of 10° to 80°, preferably within the range of 40° to 50°, or preferably 45°. A set according to any one of Claims 1 to 7.

9. The locking part (34) is a screw. A set according to any one of Claims 1 to 8.

10. The screw extends into the second panel (20) during assembly. A set according to Claim 9.

11. The first panel (10) has a second edge surface (17) adjacent to the first edge surface (11). The first locking groove (12) extends from the second edge surface (17) to the first edge surface (11). A set according to any one of Claims 1 to 10.

12. The locking part (34) is of the cam / dovetail connector type. A set according to any one of Claims 1 to 11.

13. The cam / dovetail connector comprises at least one connecting element (51) such as a bolt, at least one connector housing (52), and preferably an enlarged part (56). A set according to Claim 12.

14. Before the assembly of the first panel (10) and the second panel (20), the connecting element (51) of the cam / dovetail connector is arranged in the first locking groove (12). A set according to Claim 13.

15. The connector housing (52) is arranged in the first opening (40) of the first panel (10). A set according to Claim 13 or Claim 14.

16. The set includes a first panel groove (15) on a first panel surface (16) of the first panel (10) and a second panel groove (23) on a second panel surface (22) of the second panel (20). The set according to any one of claims 1 to 15.

17. The set further includes a back panel (30) configured to be inserted into the first panel groove (15) and the second panel groove (23) and selectively cooperate with them. The set according to claim 16.

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