Panel assembly

Abstract

A panel assembly (400) comprising a first panel (100) and a second panel (300), the first panel (100) comprising a first edge (101) and a second edge (102), the first and second edges (101, 102) being arranged at an angle in relation to one another, wherein the second panel (300) comprises a groove (302) for securing the first 5 edge (101) of the first panel (100) to the second panel (300), the groove (302) having a depth direction (D4) that extends at an angle (A2) in relation to an inner surface (303, 304) of the second panel (300), wherein the groove (302) comprises a lower abutment surface (305) and an upper abutment surface (306) arranged on opposite sides of the groove (302) and wherein the lower abutment surface (305) is configured to force the 0 first panel (100) into abutment with the upper abutment surface (306) when the first panel (100) is inserted into the groove (302).

Description

[0001] PANEL ASSEMBLY

[0002] Technical Field

[0003] The invention relates to furniture at least partly formed by panels, particularly to flat-pack furniture. More specifically, the invention relates to a panel assembly forming at least a part of a furniture.

[0004]

[0005] In recent years, the furniture industry has gradually been replacing traditional fastening means such as adhesives, nails, nut and bolt fasteners with fasteners that are often entirely or partially integrally formed in the furniture parts. This is a natural development as more advanced manufacturing methods become available and due to increasing competition. Integrated fasteners or joining systems have now been developed to the stage where they can provide the same or even higher locking strength than conventional fasteners in materials that were previously considered too brittle or weak to allow forming of integrated fasteners. Additionally, integrated fasteners allow a reduction in the total amount of components for each furniture and facilitates logistics by provision of flat-pack furniture as well as simplified final assembly of the furniture by the customer.

[0006] Manufacturers and developers of flat-pack furniture with integrated fastening means are constantly striving to provide improvements, for instance in the areas of ease of assembly, reductions in manufacturing complexity and to improve the structural integrity of the furniture. Further, a reduction in the amount of components comprised in a furniture can also be an improvement of the overall environmental effect of said furniture, which is another important aspect in constant need of improvement.

[0007] It is an objective to at least partly overcome one or more of the above-identified limitations of the prior art.

[0008] One such objective is to offer a panel assembly that facilitates a quick and sufficiently strong connection between panels, particularly panels with different thicknesses, and that can be disassembled repeatedly without functional deterioration.

[0009] Another objective is to provide a panel assembly that facilitates improving the structural rigidity thereof and / or of an associated furniture formed at least partially by the panel assembly. Another object is to reduce the environmental impact in manufacturing furniture partly or completely formed by panel assemblies, by allowing a reduction in components.

[0010] Another object is to provide a panel assembly where the panels can be mutually connected to each other without using separate fasteners and / or tools.

[0011] Another object is to provide a panel assembly facilitating a reduction in visible gaps forming between the panels thereof, particularly between a back / bottom panel and the adjoining panels.

[0012] One or more of these objectives, as well as further objectives that may appear from the description below, are at least partly achieved by one or more of the aspects below.

[0013] In a first aspect is a panel assembly comprising a first panel and a second panel provided. The first panel comprising a first edge and a second edge, the first and second edges being arranged at an angle in relation to one another, wherein the first panel further comprises a pivotable section formed in parallel with at least one of the first and second edges. The pivotable section being configured to be pivoted in relation to a main portion of the panel in order to be received in a groove formed in the second panel of the panel assembly for securing the first panel to the second panel, the groove having a depth direction that extends at an angle in relation to an edge surface of the second panel. As such is a way of attaching a first panel to a second panel provided where the rotational orientation of the pivotable section dictates the relative connection direction. For instance, the first panel may be attached to the second panel by a relative movement that is essentially perpendicular to a plane of the main portion of the first panel, as allowed by the pivotable sections.

[0014] The pivotable section of the first panel may be formed by a slit between the main portion and the pivotable section, the slit being formed in a rear side of the first panel to a depth being less than a total thickness of the panel, such that a portion of the panel that is not separated forms a hinge between the main portion and the pivotable section. As such, the pivotable sections can be formed in the material of the first panel and thus be continuous therewith. The slit may be formed e.g. by a cutting and / or sawing operation, which is a readily available and cost-efficient manufacturing method.

[0015] A respective pivotable section may be provided at opposite first edges and / or opposite second edges of the first panel. All edges provided with pivotable sections may be connected to a second panel by relative movement at an angle in relation to the main portion of the first panel, as such assembly of the panel assembly is facilitated. Moreover, the usable volume of the space created inside the panel assembly can be increased as the first panel may e.g. be connected to the backward facing edges of the associated second panels.

[0016] The first panel may comprise a first layer and a second layer, the second layer being arranged at a front side of the panel, wherein at least the second layer is made from a material being configured to allow forming of a hinge in the second layer between the pivotable section and the main portion. The provision of different layers having different material properties allows further improvements in that the material in the second layer that is to form the hinge can be selected to provide properties suited thereto.

[0017] The material of the first layer may be a wood composite material such as fibreboard, preferably high or medium density fibreboard.

[0018] The material of the second layer may be polymeric, e.g. a melamine-based material.

[0019] The second layer may be attached to the first layer by coating or laminating. The pivotable section may comprise a first locking element configured to cooperate with a second locking element formed in the groove, the first locking element being a recess and the second locking element being a protrusion or vice versa. As such, securing of the pivotable section in the groove is improved.

[0020] The first locking element may be arranged on the front side of the first panel and wherein the second locking element is arranged on a first side of the groove facing away from the main portion of the first panel. As such, pivotable section will rotate and be forced against the second locking element of the groove when inserted therein. This effectively secures the pivotable section when inserted into the groove, as it pushed the first and second locking elements into engagement with another.

[0021] The angle of the depth direction of the groove in the second panel may be between 20° and 80°, preferably between 40° and 70°.

[0022] The main portion may be configured to be arranged essentially parallel with an edge surface of the second panel.

[0023] The pivotable section may be configured to be arranged at an angle in relation to the depth direction when received in the groove and essentially perpendicularly to the main portion. The pivotable sections thus essentially wedges in the groove of the second panel and creates an effective locking in both the vertical and lateral direction.

[0024] The groove may be formed in an edge of the second panel, the edge being configured to face in a rearward direction of the panel assembly and essentially in the normal direction of the plane of the main portion of the first panel. The edge of the second panel may comprise a first edge surface and a second edge surface being arranged on opposite sides of the groove, the first edge surface being configured to abut against the main portion of the first panel and wherein the first edge surface is recessed below the second edge surface. As such, the protrusion of the main portion can be reduced in the rearward direction of the panel assembly. The main portion may be arranged flush with the second edge surface.

[0025] The groove may comprise an abutment surface being arranged essentially parallel with the depth direction and against which the pivotable section is configured to abut when inserted into the groove. The abutment surface generating a bending force on the pivotable section, forcing it against the first side in the groove and against the second locking element thereof.

[0026] In a second aspect is a panel assembly comprising a first panel and a second panel provided. The first panel comprising a first edge and a second edge, the first and second edges being arranged at an angle in relation to one another, wherein the second panel comprises a groove for securing the first edge of the first panel to the second panel, the groove having a depth direction that extends at an angle in relation to an inner surface of the second panel. The groove comprises a lower abutment surface and an upper abutment surface arranged on opposite sides of the groove and wherein the lower abutment surface is configured to force the first panel into abutment with the upper abutment surface when the first panel is inserted into the groove. The first panel is thus secured in the groove when it is inserted therein, by the oppositely arranged upper and lower abutment surfaces generating a bending force on the first edge. The first panel may thus be attached to a side / inner surface of the second panel in a convenient and secure manner. The first panel can thus also provide stability to the panel assembly by being secured in the groove of each second panel associated therewith. The aforementioned arrangement further provides for that the first panel does not necessarily need to be provided with any particular profile or locking structure, which may be beneficial in certain applications as it facilitates manufacturing.

[0027] The upper abutment surface and the lower abutment surface may be mutually arranged such that a bending force is applied to the first panel when the first edge thereof is inserted into the groove in the second panel and when the first panel is brought into a perpendicular relationship with the inner surface of the second panel. As such, the first panel may be inserted into the groove in an orientation for instance being parallel with the depth direction, and subsequently be brought into the perpendicular orientation whereby it is locked in place. The depth direction may be parallel to a guiding surface of the groove in the second panel, the guiding surface being provided on the same side and adjacent to the lower abutment surface in the groove, and wherein the angle of the depth direction is between 30° and 85°, preferably between 50° and 75°.

[0028] The upper abutment surface may be configured to be in abutment with a front side of the first panel and the lower abutment surface is configured to be in abutment with a rear side of the first panel, and wherein the upper and lower abutment surfaces are arranged offset in relation to one another as measured in the plane of the first panel and from an inner surface of the second panel. The aforementioned arranged reduces the risk of visible gaps forming between the upper abutment surface and the first panel.

[0029] The groove in the second panel may further comprise a third locking element, wherein the third locking element being formed by an edge between the upper abutment surface and an inner surface of the second panel, wherein the third locking element is configured to form a contact region to generate increased friction against the first panel. The edge may be an acute angle formed by the inner surface and the upper abutment surface, which is forced against the first panel upon insertion into the groove. The edge provides vertical locking and further facilitates reducing the risk of gaps forming between the upper abutment surface and the first panel.

[0030] The first panel may comprise a first layer arranged at the rear side and a second layer arranged at the front side of the first panel, wherein the second layer is an aesthetic layer comprising a polymeric material, e.g. a melamine-based layer.

[0031] The groove in the second panel may comprise a guiding surface being arranged adjacent to the lower abutment surface and adjacent to the side surface, and wherein the guiding surface is arranged essentially parallel with the depth direction and wherein the lower abutment surface is arranged at an angle in relation to the depth direction. The aforementioned arrangement brings about a snap locking effect and improved vertical and lateral locking to the joint between the first panel and the groove in the second panel. The angle of the lower abutment surface is closer to the vertical direction and thus closer to the plane of the first panel, thus generating a more laterally directed force against the first panel when inserted into the groove. As such, the first panel is less susceptible to be pushed out of the groove e.g. when exerted to a lateral or bending force.

[0032] The depth direction may be parallel to the guiding surface of the groove in the second panel, and wherein the angle between the guiding surface and the lower abutment surface is between 5° and 30°, preferably between the 15° and 25°. The upper abutment surface may be essentially parallel with the lower abutment surface, and may thus be manufactured in the same process and by the same tool.

[0033] The panel assembly may further comprise a third panel being configured to be arranged at an angle in relation to the first panel and the second panel, the third panel comprises a groove for securing the second edge of the first panel to the third panel, the groove having a depth direction that extends at an angle in relation to an inner surface of the second panel. The groove comprises a guiding surface and an upper abutment surface arranged on opposite sides of the groove and wherein the guiding surface is configured to force the first panel into abutment with the upper abutment surface when the first panel is inserted into the groove. The panel assembly comprising a third panel at the second side thereof facilitates assembly of the panel assembly, as the third panel can be provided with a groove that guides the movement of the first panel into the second panel and that holds it in the desired orientation, e.g. perpendicular to the second panel which improves locking.

[0034] The groove of the second panel may thus be aligned with the groove of the third panel.

[0035] The upper abutment surface of the groove in the third panel may be arranged essentially perpendicularly in relation to the inner surface of the third panel and wherein the upper abutment surface of the groove in the second panel is arranged at an angle in relation to the inner surface of the second panel such that an edge is formed against first panel. The aforementioned combination provides increased vertical locking force to the first panel in the second panel in relation to the third panel, which is beneficial since it allows the first panel to be slid in the longitudinal direction of the groove in the third panel. The longitudinal direction of the groove in the third panel is parallel with the vertical direction of the groove in the second panel, whereby the first panel can be guided by the third panel groove when inserted into the second panel groove.

[0036] The groove in the second panel may be configured to allow the first panel to be inserted to a first insertion depth as measured from the inner surface and wherein the groove in the third panel is configured to allow the first panel to be inserted to a second insertion depth as measured from the inner surface, wherein the first insertion depth is larger than the second insertion depth.

[0037] In a third aspect is a panel assembly comprising a first panel and a second panel provided. The first panel comprising a first edge and a second edge, the first and second edges being arranged at an angle in relation to one another, wherein the second panel comprises a groove for securing the first edge of the first panel to the second panel, the groove having a depth direction that extends at an angle in relation to an inner surface of the second panel, wherein the groove comprises a lower abutment surface and an upper abutment surface arranged on opposite sides of the groove. The lower abutment surface is configured to force the first panel into abutment with the upper abutment surface when the first panel is inserted into the groove, and wherein the upper abutment surface comprises a third locking element protruding therefrom and being configured to come into contact with the first panel. The upper abutment surface having a third locking element facilitates improving the vertical locking effect of the groove in the second panel against the first panel.

[0038] The upper abutment surface and the lower abutment surface are mutually arranged such that a bending force is applied to the first panel when the first edge thereof is inserted into the groove and when the first panel is brought into a perpendicular relationship with the inner surface of the second panel and wherein the bending force from the upper abutment surface is applied to the first panel by the third locking element. The vertical locking effect is thus improved, as the force is placed on the third locking element on the upper abutment surface.

[0039] The depth direction may be parallel to a guiding surface of the groove, the guiding surface being provided on the same side and adjacent to the lower abutment surface and being parallel therewith, wherein the angle is between 30° and 85°, preferably between 50° and 75°.

[0040] The third locking element may be configured to be in abutment with a front side of the first panel and the lower abutment surface is configured to be in abutment with a rear side of the first panel, and wherein the upper and lower abutment surfaces are arranged offset in relation to one another as measured in the plane of the first panel and from an inner surface of the second panel.

[0041] The third locking element may further be provided with a friction enhancing coating / impregnating agent, e.g. a polymeric substance and / or an adhesive. The agent may further be provided with abrasive particles, to further improve the vertical locking effect. Similarly, the front side and / or a first locking element of the first panel may be provided with a coati ng / lam inate to improve the friction and vertical locking effect in the region of the first and / or second edge thereof where it is in contact with the third locking element of the groove.

[0042] The panel assembly may further comprise a third panel being configured to be arranged at an angle in relation to the first panel and the second panel, the third panel comprises a groove for securing the second edge of the first panel to the third panel, the groove having a depth direction that extends at an angle in relation to an inner surface of the third panel, wherein the groove comprises a guiding surface and an upper abutment surface arranged on opposite sides of the groove and wherein the guiding surface is configured to force the first panel into abutment with the upper abutment surface when the first panel is inserted into the groove.

[0043] The groove in the third panel may comprise a lower abutment surface being arranged adjacent to the guiding surface and arranged at an angle in relation to the guiding surface, the angle being between 5° and 30°, preferably between the 10° and 25°. The foregoing provides for improved vertical and lateral locking in the groove of the third panel.

[0044] The first edge of the first panel may comprise a first locking element arranged on a front side of the first panel, the first locking element being configured to cooperate with the third locking element of the upper abutment surface, further improving vertical locking.

[0045] The first edge of the first panel may further comprise a distally tapering surface being provided distally of the first locking element on the rear side of the first panel, facilitating insertion and the deflection movement of the first edge during insertion.

[0046] The first panel may comprise a recess arranged on a rear side of the first panel on the first side thereof, wherein the recess is arranged at least partially proximally of the first locking element. The recess provides for a controlled weakening of the material of the first panel, thus controlling the bending / deflection of the first edge when inserted in to the groove in the second panel.

[0047] The embodiments and features described herein are applicable across all aspects, offering corresponding benefits and advantages.

[0048] Still other objectives, embodiments, and aspects, as well as additional features and advantages will appear from the following detailed description as well as from the accompanying schematic drawings.

[0049] Drawings

[0050] Figure 1 discloses a side / cross-sectioned view of a panel assembly illustrating a first panel and a second panel.

[0051] Figure 2 discloses a side / cross-sectioned view of a second panel.

[0052] Figure 3 discloses a side view of a portion of a first panel illustrating a first edge thereof.

[0053] Figure 4 discloses a front view of a first panel.

[0054] Figure 5 discloses a side / cross-sectioned view of a panel assembly illustrating a first panel and a second panel. Figure 6 discloses a side / cross-sectioned view of a panel assembly illustrating a first panel and a third panel.

[0055] Figure 7 discloses a side / cross-sectioned view of a panel assembly illustrating a first panel and a second panel.

[0056] Figure 8 discloses a side / cross-sectioned view of a panel assembly illustrating a first panel and a third panel.

[0057] Figure 9 discloses a side / cross-sectioned view of a panel assembly illustrating a first panel and a second panel.

[0058] Figure 10 discloses a side / cross-sectioned view of a panel assembly illustrating a first panel and a third panel.

[0059] Figure 11 discloses a detail side view of a first edge of a first panel.

[0060] Figure 12 discloses a perspective view of a panel assembly in the form of a drawer.

[0061] Embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all, embodiments are shown. Indeed, the subject of the present disclosure 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 may satisfy applicable legal requirements.

[0062] Where possible, any of the advantages, features, functions, devices, and / or operational aspects of any of the embodiments described and / or contemplated herein may be included in any of the other embodiments described and / or contemplated herein, and / or vice versa. In addition, where possible, any terms expressed in the singular form herein are meant to also include the plural form and / or vice versa, unless explicitly stated otherwise. Accordingly, the terms "a" and / or "an" shall mean "at least one" or "one or more", even though the phrase "one or more" or "at least one" is also used herein. The terms "multiple", "plural" and "plurality" are intended to imply provision of two or more elements. The term “and / or” includes any and all combinations of one or more of the associated listed elements. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing the scope of the present disclosure. Directions disclosed herein such as a vertical and / or lateral direction are merely present to facilitate description and illustration of the teachings herein. When practicing the teachings herein, the directions may be oriented differently.

[0063] Well-known functions or constructions may not be described in detail for brevity and / or clarity. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0064] Like reference signs refer to like elements throughout.

[0065] Figure 1 discloses a side view of a panel assembly 400, Figure 2 discloses a side view of a second panel 200, Figure 3 discloses a side view of a first panel 100 and Figure 4 discloses a front view of a first panel 100. In the following will simultaneous reference be made to Figures 1 to 4. It is to be understood that unless anything is stated to the contrary, features described in conjunction with either of the embodiments disclosed herein may be freely combined with any other embodiment.

[0066] The panel assembly 400 disclosed herein may be configured to form a part of or a complete furniture. For instance, the panel assembly 400 may form a part of or a complete wardrobe, a cabinet, a bookshelf, a drawer etc. The panel assembly 400 comprises a first panel 100. Preferably, the first panel 100 is a back panel / back piece or a bottom panel of the panel assembly 400. The back panel of a typical flat pack furniture such as a wardrobe is often of a smaller thickness than the other panels, e.g. the side and top / bottom panels of the same furniture. It is further often the case that bottom panels in certain types of furniture, e.g. drawers, are formed from a similar material as the back panel in a wardrobe. As such, the first panel 100 disclosed herein is equally applicable to both back and bottom panels in such furniture.

[0067] The back panel and / or the bottom panel is in many panel assemblies structurally integral and an important factor in maintaining the desired shape of the other panels in the assembly. While this is often achieved in prior art by use of separate fasteners such as nails, which are used to attach the corresponding panel to the adjoining panels and thus fixating the relative orientation of the assembly, this structural function of the first panel becomes an important factor to consider when forming a panel assembly as disclosed herein without relying on separate fasteners.

[0068] The first panel 100 may have a thickness between 2 mm and 5 mm. The first panel 100 may be made from a wood fiber / dust and polymeric binder composite, e.g. MDF / HDF. Naturally, other materials are also conceivable for the first panel 100. For instance, the first panel 100 may be made from a plastic material. Each second or third panel 200, 300, 500 disclosed herein may have a thickness of 8 mm to 50 mm. The panel assembly 400 disclosed in Figure 1 comprises a first panel 100 as described in the foregoing. The panel assembly 400 further comprises second panel 200. The second panel 200 may be made from a different material than that of the first panel 100, such as from particleboard or from OSB. It is also conceivable that the second panel 200 is made from the same material as that of the first panel 100.

[0069] The first panel 100 and the second panel 200 are configured to be connected to one another in an angular relationship, i.e. such that the plane of the first panel 100 is mainly oriented at an angle in relation to the plane of the second panel 200. They may be configured to be arranged at any relative angle but are preferably and typically arranged at a perpendicular relationship.

[0070] The first panel 100 is, as shown in Figure 4, preferably rectangularly formed, but other shapes are naturally conceivable as well. The first panel 100 thus comprises a first edge 101 and a second edge 102 being arranged at an angle in relation to one another. Typically are two first edges 101 provided on opposite edges of the first panel 100 and two second edges 102 are provided on opposite edges of the first panel 100, each first edge 101 being adjacent to two second edges 102 and vice versa.

[0071] The first panel 100 may further comprises a pivotable section 103 formed in parallel with at least one of the first and second edges 101 , 102, the pivotable section 103 being configured to be pivoted in relation to a main portion 104 of the panel 100 in order to be received in a groove 202 formed in the second panel 200 for securing the first panel 100 to the second panel 200. A pivotable section 103 may be provided at each first edge 101 and / or at each second edge 102.

[0072] The groove 202 is formed in an edge 207, i.e. in the edge face, of the second panel 200 and has a depth direction D1 that extends at an angle A1 in relation to an edge surface 203, 204 of the second panel 200. A first and second edge surface 203, 204 may be arranged on opposite sides of the groove 202 and thus be arranged to be facing in a rearward or downward direction of the panel assembly 400, i.e. away from a front side 109 of the first panel 100. It is also conceivable that the groove 202 may be formed in an interior side surface 203 of the second panel 200.

[0073] The groove 202 further comprises a first side 206 being arranged facing away from the main portion 104 of the fist panel 100 and towards an oppositely arranged abutment surface 208 in the groove 202. The first side 206 may comprise an inclined surface 209, which may be parallel with the abutment surface 208 and / or with the depth direction D1.

[0074] The depth direction D1 in the embodiment of Figures 1 to 4 is to be interpreted as the general extension of the groove 202 which defines the general insertion direction of the pivotable section 103 of the first panel 100. The depth direction D1 may be parallel with an abutment surface 208 of the groove 202 (shown in Figure 2) against which the pivotable section 103 is configured to abut during insertion into the groove 202. The angle A1 may be between 20° and 80°, preferably between 40° and 70°.

[0075] Preferably, the groove 202 and the pivotable section 103 in the embodiment shown in Figures 1 to 4 are mutually formed such that the pivotable section 103 is arranged essentially perpendicularly in relation to the main portion 104 of the first panel 100 when the first panel 100 is connected to the second panel 200. As such, the first panel 100 secures the second panel 200 for movement in the lateral direction L in relation to the first panel 100.

[0076] It is further to be understood that while only one edge 101 of the first panel 100 and one second panel 200 is shown in Figure 1, the first panel 100 may be attached to a respective second panel 200 at first and second edge 101, 102 thereof.

[0077] Preferably, the pivotable section 103 of the first panel 100 and the groove 202 in the second panel 200 are mutually formed such that when the pivotable section 103 is brought into / towards a perpendicular relationship with the main portion 104 of the first panel 100, the pivotable section 103 is subjected to a bending force by its interaction with the groove 202 and thus wedges in the groove 202 to a certain extent. As such, a friction therebetween is achieved, whereby the locking force in the vertical direction V and the lateral direction L between the pivotable section 103 and the groove 202 is improved. This facilitates allowing the first panel 100 to provide a reinforcing function to the panel assembly 400.

[0078] The length L1 of the main portion 104 of the first panel 100 between opposite pivotable sections 103 is preferably chosen for the panel assembly 400 such that each pivotable section 103 is biased towards the perpendicular position in relation to the main portion 104 in the respective groove 202, when the first panel 100 attached to two opposite second panels 200. Accordingly, the vertical and lateral locking effect is improved between the first panel 100 and each associated second panel 200.

[0079] The pivotable section 103 of the first panel 100 may be formed by providing a slit 105 between the main portion 104 and the pivotable section 103, the slit 105 being formed in a rear side 108 of the first panel 100 to a depth being less than a total thickness of the panel 100, such that a portion 107 of the panel 100 that is not separated forms a hinge 110 between the main portion 104 and the pivotable section 103. It is also conceivable that pivotable sections 103 may be attached to the main portion 104 of the first panel 100 for instance by means of an adhesive, whereby the adhesive forms the hinge 110 between each pivotable section 103 and the main portion 104.

[0080] However, by allowing a portion 107 of the first panel 100 to form the hinge 110, the structural integrity thereof can be improved, and it also brings with it benefits in terms of reducing the visibility of the joint between the pivotable section 103 and the main portion 104 as e.g. adhesives can be translucent to a certain extent, while the material of the first portion 107 generally is not and is therefore less visible as a hinge 110 when observed e.g. from the interior of the furniture that the panel assembly 400 forms or forms part of.

[0081] As is illustrated in Figure 3, the first panel 100 may comprise a first layer 106 and a second layer 112. The second layer 112 is arranged at a front side 109 of the first panel 100. The front side 109 is the side of the first panel 100 that is intended to be the most visible side, e.g. in a wardrobe it is typically the surface facing inwards inside the wardrobe and in a drawer it is the surface facing upwards towards the inside of the drawer. Naturally, a second layer 112 may be provided at the rear side 108 as well, i.e. on both sides of the first layer 106. The second layer 112 may form a decorative layer, e.g. providing a certain color or texture to first panel 100 in addition to the function thereof as described herein.

[0082] The first layer 106 forms the base layer or substrate of the first panel 100, it may be made from a wood composite material as mentioned above. It may advantageously be made from MDF. However, other materials are also considered such as synthetic materials e.g. so called wood-polymer-composites, with or without organic materials. Such materials can be formed by a filling material mixed with a polymeric binder, the filling material may be inorganic, e.g. CaCO3, or organic, such as wood, and may further comprise blowing agents to generate a foamed material with low density and thus low overall weight. Naturally, other materials are also conceivable such as MgO / plant-fiber based materials. The foregoing materials are equally applicable to the first panel 100 not comprising a second layer, and to the second and third panels 200, 300, 500 disclosed herein.

[0083] The second layer 112 is made from a material being configured to allow forming of the hinge 110 in the second layer 112 between the pivotable section 103 and the main portion 104, i.e. from an elastic material that allows bending thereof. The second layer 112 may thus form the portion 107 of the first panel 100 that forms the hinge 110. The material of the second layer 112 may be polymeric, e.g. a melamine-based material such a melamine resin immersed paper laminate and / or a melamine based coating. The second layer 112 may further be formed by a non-melamine based material, e.g. from a PVC based coati ng / lam inate, from an acrylic based

[0084] coati ng / lam inate etc. The second layer 112 may as mentioned be laminated or coated or otherwise attached to the first layer 106. The ratio of the thickness of the second layer 112 in relation to thickness of the first layer 106 is preferably less than 5:10, or even less than 3:10.

[0085] The pivotable section 103 may further comprise a first locking element 111 configured to cooperate with a second locking element 205 formed in the groove 202. The respective locking elements 111, 205 are configured to increase the friction between the pivotable section 103 and the groove 202, thereby further improving the vertical and lateral locking effect of the pivotable section 103 when arranged in the groove 202.

[0086] The first locking element 111 may be formed by a recess and the second locking element 205 by a protrusion or vice versa. First locking element 111 on the pivotable section 103 is provided closer to the hinge 110 than to a distal end 115 of the pivotable section 103. The distal end 115 constitutes the part of the pivotable section 103 that abuts against the abutment surface 208. The aforementioned arrangement of the first locking element 111 provides for amplification in the area of the first locking element 111of the force that is subjected by the abutment surface 208 to the distal end 115, which thereby increases the locking effect between the first locking element 111 and the second locking element 205.

[0087] The pivotable section 103 may further be formed by another material than that of the main portion 104 of the first panel 100. For instance, the pivotable section 103 may be formed by a plastic material or a composite material and be attached to the main portion 104 by means of an adhesive. The hinge 110 may be formed as a part of the separately formed pivotable section 103, e.g. as a so-called living hinge between a portion thereof which is attached to the main portion 104 and the remaining pivotable section 103.

[0088] The first locking element 111 is preferably formed in the front side 109 of the first panel 100. The first locking element 111 may be formed in the second portion 112 thereof.

[0089] The second locking element 205 is arranged on the first side 206 of the groove 202 and is preferably arranged such that the pivotable section 103 is pressed against the second locking element 205 as it is inserted into the groove 202. The pivotable section 103 is preferably biased against the second locking element 205 when inserted into the groove 202. The edge 207 of the second panel 200 may as mentioned comprise a first edge surface 203 and a second edge surface 204 being arranged on opposite sides of the groove 202. The first edge surface 203 may be configured to abut against the main portion 104 of the first panel 100. The first edge surface 203 may further be recessed below the second edge surface 204. Accordingly, the protrusion of the rear side 108 of the main portion 104 behind / below the panel assembly 400 may be reduced. For instance, the rear side 108 may be arranged aligned with the second edge surface 204 or even recessed below it.

[0090] The first panel 100 according to the first embodiment may be configured to be attached to one or more second panels 200 by means of a movement in the vertical direction V, i.e. in parallel with the plane of the second panel(s) 200. Moreover, the first panel 100 may be connected to the panel assembly 400 after four second panels 200 have already been connected to each other. As such, assembly of the panel assembly 400 is facilitated while allowing the first panel 100 to provide structural rigidity and stability to the panel assembly 400 by securing each pivotable section 103 thereof in both the lateral and vertical direction V, L to a respective second panel 200. The groove 202, having a depth direction D1 and making use of the inherent resilience in the material(s) of the first panel 100 as described in the foregoing, facilitates locking the first panel 200 to the second panel(s) in the lateral and vertical directions V, L.

[0091] Moreover, by that the first panel 100 can be connected to the respective rearward facing edges 207 of each second panel 200, the amount of useable volume that can be encompassed by the panel assembly 400 is effectively increased.

[0092] Turning now to the embodiment disclosed in Figures 5 and 6, which shows a side view of a panel assembly 400 comprising a first panel 100 and second panel 300 and a side view of a panel assembly 400 comprising a first panel 100 and a third panel 500 respectively.

[0093] Figure 5 discloses a panel assembly 400 comprising a first panel 100 and a second panel 300. The second panel 300 may be a side, bottom and / or a front panel of a furniture formed in part or completely by the panel assembly 400. The first panel 100 is as described in the foregoing in conjunction with the embodiment of Figures 1 to 4 a back and / or a bottom panel in the panel assembly 400 and is preferably configured to provide a structural functionality to the panel assembly 400.

[0094] The first panel 100 is according to the embodiment of Figures 5 and 6 is configured to be connected to an inner surface 304 of the second panel 300. The inner surface 304 is the surface of the second panel 300 that is intended to face towards the inside of the panel assembly 400 and most commonly towards an oppositely arranged second panel 300 which may also be comprised by the panel assembly 400. As such, for all embodiments disclosed herein, while only one side / corner of the panel assembly 400 may be illustrated in a particular figure, it is to be understood that the panel assembly 400 preferably is symmetrical such that oppositely arranged elements are provided being mirrored in relation to a central plane of the panel assembly 400.

[0095] Preferably, two opposite second panels 300 are provided at opposite edges 101, 102 of the first panel 100.

[0096] The first panel 100 shown in Figure 4 comprises a first edge 101 and a second edge 102, the first and second edges 101, 102 being arranged at an angle in relation to one another. The first and second edges 101, 102 may be perpendicularly arranged in relation to one another. The first edge 101 may beneficially form a long edge and the second edge 102 may beneficially form a short edge of the first panel 100. Naturally, the opposite relationship is also possible, or that the first and second edges 101, 102 are of essentially equal length.

[0097] The second panel 300 further comprises a groove 302 for securing the first edge 101 of the first panel 100 to the second panel 300, the groove 302 having a depth direction D4 that extends at an angle A2 in relation to an inner surface 303, 304 of the second panel 300. As such, with the first panel 100 having an essentially planar shape, the first edge 101 of the first panel 100 will upon insertion into the groove 302 be bent to a certain degree whereby the resilience of the material in the first panel 100 will generate a force against the groove 302. This force / pretension of the first panel 100 in the groove 302 causes friction to be generated such that a locking effect is achieved in the vertical direction V as illustrated in Figure 5, i.e. such that the first edge 101 is secured in the groove 302 and, as follows, such the first panel 100 secures the second panel 300 to first edge 101. The first panel 100 does accordingly not need to be provided with a locking element to achieve a satisfactory vertical locking effect, which is beneficial in certain applications as it can be complex to form locking elements in panels having small thicknesses.

[0098] The groove 302 further comprises a lower abutment surface 305 and an upper abutment surface 306 arranged on opposite sides of the groove 302. The lower abutment surface 305 is configured to force the first panel 100 into abutment with the upper abutment surface 306 when the first panel 100 is inserted into the groove 302 in the vertical direction V. Particularly, when the first panel 100 is brought into the desired orientation in relation to the second panel 300, which is typically approximately 90 degrees, the first edge 101 will be forced against the lower abutment surface 305 and the upper abutment surface 306. The first panel 100 may have a length L2 (shown in Figure 4) between opposite first edges 101 thereof that is chosen such that when the first edge 101 on opposite sides thereof is arranged in a respective groove 302 of a respective second panel 300, both first edges 101 are abutting against the abutment surface 305 while at least one first edge 101 is not in contact with a bottom 309 (shown in Figures 5 and 7) of the groove 302. The length L2 is thus preferably larger than the distance in the vertical direction V from the bottom 309 of the groove 302 in the second panel 300, to the lower abutment surface 305 on an oppositely arranged second panel 300 of the panel assembly 400. Further, the length L2 is preferably smaller than the distance in the vertical direction V between a respective bottom 309 in grooves 302 on opposite second panels 300 of the panel assembly 400. As such, the panel assembly 400 becomes less sensitive for manufacturing tolerances of the first panel 100.

[0099] The upper abutment surface 306 and the lower abutment surface 305 may thus be mutually arranged such that a bending force is applied to the first panel 100 when the first edge 101 thereof is inserted into the groove 302 and when the first panel 100 is brought into a perpendicular relationship with the inner surface 303, 304 of the second panel 300. Often, the first panel 100 may only be brought into the groove 302 in the second panel 300 in a perpendicular or at least in a desired relationship thereto, as the relative orientation is dictated by the longitudinal extension of the groove 502 in the one or more third panels 500 (as shown in Figure 6).

[0100] For instance, the second panel 300 is often connected to one or more third panels 500 before the first panel 100 is attached to the panel assembly 400. The first panel 100 is thereafter slid along the longitudinal direction of the groove(s) 502 in each third panel 500 and into the groove 302 of the second panel 300. Thereafter, the panel assembly 400 is often provided with another second panel 300 opposite the first second panel 300.

[0101] The first panel 100 is thereby held in the desired orientation in relation to the groove 302 in each second panel 300, such that the desired friction for securing each respective first edge 301 in each groove 302 is induced. The upper abutment surface 306 is configured to be in abutment with a front side 109 of the first panel 100 and the lower abutment surface 305 is configured to be in abutment with a rear side 108 of the first panel 100, and wherein the upper and lower abutment surfaces 306, 305 are arranged offset in relation to one another as measured in the plane of the first panel 100 and from an inner surface 303, 304 of the second panel 300. I.e. as measured in the vertical direction V. The foregoing arrangement reduces the risk of any visible gaps forming the between the first panel 100 and the second panel 300 between the upper abutment surface 306 and the front side 109. This is beneficial in terms of providing a desired aesthetic appearance to the panel assembly 400.

[0102] The depth direction D4 of the groove 302 in the second panel 300 may be parallel to a guiding surface 307 of the groove 302, the guiding surface 307 being provided on the same side and adjacent to the lower abutment surface 305 in the groove 302, and wherein the angle A2 is between 30° and 85°, preferably between 50° and 75°.

[0103] The lower abutment surface 305 may be arranged at an angle A6 in relation to the depth direction D4, where the angle A6° is between 5° and 30°, preferably between the 10° and 25°. The lower abutment surface 305 is thus provided with an incline closer to the vertical direction V than the adjacent guiding surface 307, effectively generating a snap-like feedback to the user in the movement as the first edge 301 slides over the transition between the guiding surface 307 and onto the lower abutment surface 305. The angle A6 of the lower abutment surface 305 further provides for that the bending force applied to the first edge 101 of the first panel 100 generates a lateral force against the lower abutment surface 305 that is near a normal direction thereof. This is beneficial since it reduces the risk of that the bending force causes extraction of the first panel 100. Moreover, the contact area between the first panel 100 and the lower abutment surface 305 is increased, which may increase the friction therebetween.

[0104] Further illustrated in Figure 5 is how the groove 302 may further comprise a third locking element 308. The third locking element 308 is configured to increase the locking effect in the vertical direction V of the panel assembly 400, i.e. to reduce the risk of undesired extraction of the first panel 100 from the groove 302.

[0105] The third locking element 308 may be formed by an edge 308 between the upper abutment surface 306 and an inner surface 304 of the second panel 300. I.e., the edge 308 may be formed by an acute angle, which may be essentially equal to angles A2+A6, between the upper abutment surface 506 and the inner surface 504 of the second panel 300. The upper abutment surface 506 may thus be parallel with the lower abutment surface 305, and beneficially be manufactured by the same machining operation.

[0106] Further, the third locking element 308 may be formed by a protrusion, e.g. as is shown in the embodiment of Figure 7. The protrusion may be formed on the upper abutment surface 306 and be provided with a rounded or e.g. triangular or rectangular cross-sectional shape. Naturally, more than one protrusion may be provided to form the third locking element 308. Similarly, the first panel 100 on the first side 109 thereof may be provided with a first locking element 111 , as is shown e.g. in Figures 7 and 11. The first locking element 111 of the first panel 100 being provided on the front side 109 thereof to cooperate with the locking element 108 of the second panel 300. The first locking element 111 of the first panel 111 may be formed by a recess corresponding to the protrusion of the first third locking element 308. Naturally, first locking element 111 on the first panel 111 may be in the shape of a protrusion while the first third locking element 308 on the second panel 300 may be in the shape of a recess.

[0107] In Figure 6 is a side view shown of a panel assembly 400 comprising a first panel 100 and a third panel 500. The third panel 500 is preferably attached to a second edge 102 of the first panel 100, that is arranged at an angle in relation to the first edge 101 where the first panel 100 is attached to a second panel 200.

[0108] The third panel 500 may thus be configured to be arranged at an angle in relation to the first panel 100 and to the second panel 300. The third panel 500 comprises a groove 502 for securing the second edge 102 of the first panel 100 to the third panel 500, the groove 502 having a depth direction D5 that extends at an angle A3 in relation to an inner surface 503, 504 of the third panel 500, wherein the groove 502 comprises a guiding surface 507 and an upper abutment surface 506 arranged on opposite sides of the groove 502. The guiding surface 507 is configured to force the first panel 100 into abutment with the upper abutment surface 506 when the first panel 100 is inserted into the groove 502 in the vertical direction V.

[0109] The groove 502 in the third panel 500 is preferably configured to allow sliding of the second edge 102 of the first panel 100 along the length thereof, i.e. in a direction perpendicular to the vertical and lateral directions V, L, thus allowing the longitudinal extension of the groove 502 in the third panel 500 to guide the movement of the first panel 100 into the groove 302 in the second panel 300, as described in the foregoing. The groove 302 of the second panel 300 is aligned with the groove 502 of the third panel 500, i.e. such that the respective longitudinal directions intersect.

[0110] Further, the guiding surface 507, which is inclined, forces the first panel 100 towards the upper abutment surface 506 and thus reduces the risk of visible gaps forming between the first panel 100 and the third panel 500.

[0111] The lower portion of the guiding surface 507 may form a lower abutment surface 505 being parallel with the guiding surface 507, against which the first panel 100 is configured to abut when inserted into the groove 502 in the third panel 500.

[0112] The first panel 100 may further have a length L3 (shown in Figure 4) between opposite second edges 102 thereof that is chosen such that when the second edge 102 on opposite sides thereof is arranged in a respective groove 502 of oppositely arranged third panels 500, both second edges 102 are abutting against respective abutment surfaces 505 while at least one second edge 102 is not in contact with a bottom 508 (shown in Figures 6 and 8) of the groove 502. As such, the panel assembly 400 becomes less sensitive for manufacturing tolerances of the first panel 100.

[0113] The upper abutment surface 506 of the groove 502 in the third panel 500 may be arranged essentially perpendicularly in relation to the inner surface 503, 504 of the third panel 500, and may be essentially parallel with the front side 109 of the first panel 100.

[0114] Further illustrated in Figures 5 and 6, the groove 302 in the second panel 300 may be configured to allow the first panel 100 to be inserted to a first insertion depth D3 as measured from the inner surface 303, 304 and the groove 502 in the third panel 500 may be configured to allow the first panel 100 to be inserted to a second insertion depth D2 as measured from the inner surface 503, 504, wherein the first insertion depth D3 is larger than the second insertion depth D2.

[0115] Figures 7 and 8 show a respective side view of a panel assembly 400 comprising a first panel 100 and a second panel 300 and a panel assembly 400 comprising a first panel 100 and a third panel 500 respectively. Figure 11 further shows a detail side view of a first edge 101 of the first panel 100 illustrated in Figure 7.

[0116] The second panel 300 illustrated in Figure 7 comprises a groove 302 comprising an upper abutment surface 306 being provided with a third locking element 308 protruding therefrom and being configured to come into contact with the first panel 100. However, as mentioned above, it is conceivable that, alternatively or in combination, the first panel 100 may be provided with a first first locking element 111 protruding therefrom for being in contact with the upper abutment surface 306.

[0117] Further illustrated in Figure 7 (also shown in Figure 5) is how the first edge 101 of the first panel 100 is configured deflect in a deflection movement D6 upon insertion into the groove 302 in the second panel 300. Further, a deflection movement D8 may also be applicable to the second edge 102 of the first panel 100, which may be configured to deflect upon insertion into the groove 502 in the third panel 500 as shown in Figure 8.

[0118] The deflection movement D6, D8 is established as the first and / or second edge 101, 102 is pushed laterally during insertion by the lower abutment surface 305, 505 towards the side of the groove 302, 502 comprising the upper abutment surface 306, 506. As it is generally desired to restrict the effect / extension of the deflection movement D6, D8 to the first and / or second edge 101, 102 of the first panel 100 and thus avoid generating a significant curvature of the main portion 104 as a whole, the grooves 302, 502 are respectively formed to facilitate this. Particularly, it has been proven that a lateral deflection movement D6, D8, being defined as lateral movement from a relaxed state of the rear surface 108 of the first panel 100 when the first and / or second edge 101, 102 thereof is not bent, of between 10% to 100% of the thickness T (shown in Figures 9 and 10) of the first panel 100.

[0119] Each first edge 101 may be configured to, by cooperation with the groove 302 in the second panel 300, laterally deflect in a deflection movement D6 of between 10% to 100% of the thickness T of the first end 101, or more preferably between 20% to 70% of the thickness T. As such, a balance is achieved between a sufficient vertical locking force and avoidance of excessive bending of the first panel 100 outside of the groove 302. The deflection movement D6 of the first end 101 is preferably larger than a corresponding deflection movement D8 of the second end 102.

[0120] The second edge 102 may further be configured to, by cooperation with the groove 502 in the third panel 500, to laterally deflect in a deflection movement D8 of between 5% to 50% of the thickness T of the second end 102, or more preferably between 5% to 20% of the thickness T of the second end 102.

[0121] A distance D9, shown in Figure 9 but equally applicable to all embodiments of the second panel disclosed herein, in the lateral direction between the upper abutment surface 306 and the lower abutment surface 305 of the groove 302 in the second panel 300 is preferably less than the thickness T of the first edge 101 of the first panel 100. The lateral distance D9 between the upper and lower abutment surfaces 306, 305 may be between 0% to 90% of the thickness T. Preferably, the distance D9 is between 30% to 80% of the thickness T. The distance D9 is preferably measured from an intended area of contact P1 between the first end 101 of the first panel 100 being provided on the lower abutment surface 305, against which the first panel 100 is configured to rest when inserted into the groove 302.

[0122] A distance D10, shown in Figure 10 but equally applicable to all embodiments of the third panel disclosed herein, in the lateral direction between the upper abutment surface 506 and the lower abutment surface 505 of the groove 502 in the third panel 500 is equal to or less than the thickness T of the second edge 102 of the first panel 100. The lateral distance D9 between the upper and lower abutment surfaces 306, 305 may be between 50% to 95% of the thickness T. Preferably, the distance D9 is between 80% to 95% of the thickness T. The distance D10 is preferably measured from an intended area of contact P2 between the second end 102 of the first panel 100 being provided on the lower abutment surface 505, against which the first panel 100 is configured to rest when inserted into the groove 502. The first panel 100 may as mentioned comprise a first locking element 111. The first locking element 111 being arranged on the front side 109 of the first panel 100, thus facing and being configured to cooperate with the third locking element 308 of the upper abutment surface 306. Preferably, the deflection movement D6 is configured to be a bending movement taking place essentially around the first locking element 111 of the first edge 101 of the first panel 100.

[0123] The deflection movement D6 being established by the upper abutment surface 306 and the lower abutment surface 305 being mutually arranged such that a bending force is applied to the first panel 100 when the first edge 101 thereof is inserted, in the vertical direction V, into the groove 302 and when the first panel 100 is brought into a an essentially perpendicular relationship with the inner surface 303, 304 of the second panel 300. The force in the lateral direction L towards the front side 109 of the first panel 100 for generating the bending force may thus be applied at least partially by the third locking element 308 on the upper abutment surface 306, which improves vertical locking.

[0124] In the embodiment of the panel assembly 400 illustrated in Figure 7, the depth direction D4 is parallel to the guiding surface 307 of the groove 302. The guiding surface 307 being provided on the same side and adjacent to the lower abutment surface 305 and being parallel therewith. Essentially, the guiding surface 307 may be the upper part, closer to the inner surfaces 303, 304, while the lower abutment surface 305 is the lower part of the same surface. Naturally, they may be arranged at an angle in relation to one another as shown in Figure 5. The angle A2 may be between 30° and 85°, preferably between 50° and 75°.

[0125] Figure 8 shows, as is also described in the foregoing, how the panel assembly 400 may comprise a third panel 500. While the third panel 500 shown in Figure 8 is beneficially combined with the second panel 300 illustrated in Figure 7, any combination of second and third panels 300, 500 disclosed herein is possible.

[0126] The third panel 300 comprises a groove 502 having a depth direction D5 that extends at an angle A3 in relation to an inner surface 503, 504 of the second panel 500. The groove 502 comprises a guiding surface 507. The guiding surface 507 is configured to force the first panel 100 into abutment with the upper abutment surface 506 when the first panel 100 is inserted into the groove 502. The groove 502 in the third panel 500 further comprises a lower abutment surface 505 being arranged adjacent to the guiding surface 507 and arranged at an angle A7 in relation to the guiding surface 507, the angle A7 being between 5° and 30°, preferably between the 10° and 25°. As such, the second edge 102 of the first panel 100 will be guided during the first portion of the vertical movement into the groove 502 by the guiding surface 507 towards the upper abutment surface 506. Once the second edge 102 passes over the transition between the guiding surface 507 and the lower abutment surface 505, a snap like feeling in the insertion movement is provided as feedback to the user. Similarly as described in conjunction with Figure 5, the angle A7 of the lower abutment surface 505 further provides for that a bending force applied to the second edge 102 of the first panel 100 generates a lateral force against the lower abutment surface 505 that is near a normal direction thereof. This is beneficial since it reduces the risk of that the bending force causes extraction of the first panel 100. Moreover, the contact area between the first panel 100 and the lower abutment surface 505 is increased thus, which may increase the friction therebetween.

[0127] Figure 9 shows a side view of a panel assembly 400 comprising a first panel 100 and a second panel 300. The groove 302 of the second panel 300 may comprise a lateral recess 310 being configured to at least partially accommodate the first edge 101 of the first panel 100 when inserted into the groove 302. The lateral recess 310 is arranged below the upper abutment surface 306, thus being configured to face the front side 109 of the first panel 109. The lateral recess 310 further facilitates accommodation of manufacturing tolerances of the thickness T of the first panel 100. This is particularly beneficial in the context of the teachings herein as it is facilitated that the first edge 101 of the first panel 100 does not need to be machined / profiled at all, or only machined / profiled at the front side 109 thereof. This necessitates that the groove 302 must be able to manage the manufacturing tolerances of the first panel 100, which may be as high as ±10% - 20% of the nominal thickness T. If the thickness T is above the nominal measurement, it will require a larger deflection movement D6 and thus that a larger portion of the first edge 101 needs to be able to be accommodated by the lateral recess 310 and vice versa.

[0128] The lateral recess 310 is not limited to the cross-sectional shape illustrated herein but may be provided with any shape such a curved / semi-circular, triangular, rectangular shape etc.

[0129] The lateral recess 310 may be provided with a recess width D7 as measured in the lateral direction L from the transition between the upper abutment surface 306 and the inner surface 304, to the lateral end of the lateral recess 310. The recess length D7 may be between 40% to 200% of the thickness T of the first panel 100, preferably between 70% to 180%. The recess width D7 may be between 100% and 150% of the thickness T of the second edge 102 of the first panel 100. Figure 10 shows a side view of a panel assembly 400 comprising a first panel 100 and a third panel 500. The groove 502 of the third panel 300 may comprise a lateral recess 509 being configured to at least partially accommodate the second edge 102 of the first panel 100 when inserted into the groove 502. The lateral recess 509 is arranged below the upper abutment surface 506, thus being configured to face the front side 109 of the first panel 109. The lateral recess 509 further facilitates accommodation of manufacturing tolerances of the thickness T of the first panel 100. This is particularly beneficial in the context of the teachings herein as it is facilitated that the second edge 102 of the first panel 100 does not need to be machined / profiled at all or only machined / profiled at the front side 109 thereof. This necessitates that the groove 502 must be able to manage the manufacturing tolerances of the first panel 100, which may be as high as ±10% - 20% of the thickness T. If the thickness T is above the nominal measurement, it will require a larger deflection movement D6 and thus that a larger portion of the second edge 102 needs to be able to be accommodated by the lateral recess 509 and vice versa.

[0130] The lateral recess 509 is not limited to the cross-sectional shape illustrated herein but may be provided with any shape such a curved / semi-circular, triangular, rectangular shape etc.

[0131] The lateral recess 509 may be provided with a recess width D11 as measured in the lateral direction L from the transition between the upper abutment surface 506 and the inner surface 503, 504, to the lateral end of the lateral recess 509. The recess width D11 may be between 30% to 150% of the thickness T of the first panel 100, preferably between 50% to 125%. The recess width D11 may be between 50% and 80% of the thickness T of the second edge 102 of the first panel 100.

[0132] As illustrated in Figure 11 , the first edge 101 of the first panel may further comprise a distally tapering surface 114 being provided distally of the first locking element 111 on the front side 109 of the first panel 100. The tapering surface 114 facilitates insertion of the first edge 101 in the groove 302 in the second panel 300.

[0133] The rear side 108 of the first panel 100 is preferably essentially planar, with the distally tapering surface 114 only being provided on the front side 109 of the first panel 100. This arrangement facilitates manufacturing as only one side of the first panel 100 needs to be machined.

[0134] However, in certain embodiments, the first panel 100 may further comprise a recess 113 arranged on the rear side 108 of the first panel 100. The recess 113 facilitates controlling the deflection movement D6 of the first edge 101 of the first panel 100, as it provides a weakened region 116 to the first panel 100. Preferably, the recess 116 is arranged opposite the first locking element 111 of the first panel 100. The recess 113 may be arranged at least partially proximally of the first locking element 111, thus facilitating the bending of the first edge 101 of the first panel 100 distally of the first locking element 111. As such, the majority of the deflection movement D6 takes place by bending between the recess 113 and the first locking element 111, essentially by rotation around the weakened region 116 being provided therebetween. The portion of the first panel 100 distally of the first locking element 111 may thus be configured to maintain an essentially straight cross-sectional shape while arranged in the groove 302. The foregoing is described in relation to the first edge 301 of the first panel 100 but is equally applicable to the second edge 102 thereof. Further, each pivotable section 103 may be provided with the features described in the foregoing.

[0135] One or more of the first, second and third locking elements 111, 205, 308 disclosed herein may further be provided with a friction enhancing coating / impregnating agent, e.g. a polymeric substance and / or an adhesive. The upper and / or lower abutment surfaces 306, 305, 506, 505 may additionally or alternatively be provided a friction enhancing coating / impregnating agent. The agent may further be provided with abrasive particles, to further improve the vertical and / or lateral locking effect. Similarly, the front side of the first panel may be provided with a coating / laminate to improve the friction and vertical / lateral locking effect in the region of the first and / or second edge thereof where it is in contact with the groove.

[0136] Figure 12 discloses a perspective view of a panel assembly 400 in the shape of a drawer. The panel assembly 400 comprises a first panel 100 forming a bottom panel and two oppositely arranged second panels 300, forming front and rear panels of the drawer. Further, two oppositely arranged third panels 500 are provided, forming the side panels of the drawer. The second and third panels 300, 500 are connected to each other by means of snap joint connectors, preferably being integrally formed in the material of the second and third panels 300, 500 respectively, in which context the teachings herein find particular use. It is naturally conceivable that the side panels may be formed by second panels 300 as disclosed herein and the front and rear panels are formed by third panels 500. Moreover, second panels 300 or third panels 500 may form each of the side and front / rear panels of the panel assembly 400. Naturally, the front / rear and / or the side panels may also be formed by second panels 200 as disclosed in Figures 1 and 2.

[0137] Turning back to Figure 9, the lateral recess 310 extends into the second panel 300 by a distance D7 in the lateral direction L. The distance D7 may be measured in the lateral direction L from the upper abutment surface 306 to an inner portion 3101 of the recess 310. In this interpretation, D7 corresponds to the lateral component of the distance between the upper abutment surface 306 and the inner portion 3101. As a result, the lateral recess 310 defines a space beneath the upper abutment surface 306 for accommodating at least a portion of the first edge 101 of the first panel 100 when the edge 101 is deflected and inserted into the groove 302. The inner portion 3101 of the recess 310 may be an innermost portion 3101 of the recess 310

[0138] The groove 302, being formed into the second panel 300, defines uppermost edges at its opening, where it intersects the surface 304 of the panel 300. One of these edges is located on the same side of the groove 302 as the upper abutment surface 306, and the other on the side of the lower abutment surface 305. The edge located on the same side of the groove 302 as the upper abutment surface 306 is denoted 1011, and may also be referred to as the abutment-side opening edge 1011 of the groove 302.

[0139] Additionally or alternatively, the distance D7 may be measured in the lateral direction L from the abutment-side opening edge 1011 to the inner portion 3101 of the lateral recess 310. In this case, D7 corresponds to the lateral component of the distance between the edge 1011 and the inner portion 3101.

[0140] The distance D7, whether measured from the upper abutment surface 306 or from the edge 1011, may be at least 10%, at least 20%, or at least 30% of the thickness T of the first panel 100. A larger value of this percentage generally increases the frictional engagement between the panels 300 and 100, thereby enhancing the retention force of the joint.

[0141] The thickness T of the panel 100 may, for the purposes of calculating dimensional relationships such as D7, D9, or deflection magnitudes, be measured at the very end of the second edge 102. This refers to the local thickness of the panel at the terminal portion of the edge 102 that is inserted into the corresponding groove of the other panel.

[0142] Still with reference to Figure 9, the lower abutment surface 305 is located at a first distance from the upper abutment surface 306, and at a second distance from the abutment-side opening edge 1011, both distances being measured in the lateral direction L. These first and second distances may be the same in some embodiments, but may differ in others, for example, when the upper abutment surface 306 is formed on a protrusion that extends into the groove 302. The relevant distance, denoted as D9 in Figure 9, corresponds to the lateral component of the distance between the lower abutment surface 305 and the upper abutment surface 306, or alternatively between the lower abutment surface 305 and the edge 1011, as applicable. The distance D9, as measured in the lateral direction L, whether measured to the upper abutment surface 306 or to the edge 1011, may be at least 10%, 20%, or 30% smaller than the thickness T of the first panel 100. The difference between the thickness T and the distance D9 corresponds to the lateral deflection of the second edge 102 into the lateral recess 310 during insertion.

[0143] What has been described above in respect of the distances D7 and D9 in connection with Figure 9 may apply correspondingly to all embodiments of the grooves described herein for receiving and securing an edge of a panel. This includes variations in groove geometry, abutment surface positioning, and recess configuration across all illustrated and disclosed embodiments.

[0144] Items

[0145] In the following, different configurations and / or different aspects are represented in itemized structure in addition to the subject matter of claim 1 and the dependent claims and in addition to the explanations and configurations given in the introductory portion of this specification. It is to be noted that the below specific feature combinations are not intended to limit the disclosure to such specific feature combinations. By contrast, the below feature combinations merely provide different examples having improved capabilities. Features and embodiments as defined in the itemized configurations may be combined with other features and embodiments of other itemized configurations, as well as with one or more of the features of configurations described in the summary section and the detailed description section.

[0146] 1. A panel assembly (400) comprising a first panel (100) and a second panel (200), the first panel (100) comprising a first edge (101) and a second edge (102), the first and second edge (101, 102) being arranged at an angle in relation to one another, wherein the first panel (100) further comprises a pivotable section (103) formed in parallel with at least one of the first and second edges (101, 102), the pivotable section (103) being configured to be pivoted in relation to a main portion (104) of the panel (100) in order to be received in a groove (202) formed in the second panel (200) of the panel assembly (400) for securing the first panel (100) to the second panel (200), the groove (202) having a depth direction (D1) that extends at an angle (A1) in relation to an edge surface (203, 204) of the second panel (200).

[0147] 2. The panel assembly (400) according to item 1, wherein the pivotable section (103) of the first panel (100) is formed by a slit (105) between the main portion (104) and the pivotable section (103), the slit (105) being formed in a rear side (108) of the first panel (100) to a depth being less than a total thickness of the panel (100), such that a portion (107) of the panel (100) that is not separated forms a hinge (110) between the main portion (104) and the pivotable section (103).

[0148] 3. The panel assembly (400) according to item 1 or 2, wherein a respective pivotable section (103) is provided at opposite first edges (101) and / or opposite second edges (102) of the first panel (100).

[0149] 4. The panel assembly (400) according to any one of the preceding items, wherein the first panel (100) comprises a first layer (106) and second layer (112), the second layer (112) being arranged at a front side (109) of the panel (100), wherein at least the second layer (112) is made from a material being configured to allow forming of a hinge (110) in the second layer (112) between the pivotable section (103) and the main portion (104).

[0150] 5. The panel assembly (400) according to item 2, wherein the slit (105) is formed by a cut in the first panel (100).

[0151] 6. The panel assembly (400) according to item 4, wherein the material of the first layer (106) is a wood composite material such as fibreboard, preferably high or medium density fibreboard.

[0152] 7. The panel assembly (400) according to item 4, wherein the material of the second layer (112) is polymeric, e.g. a melamine-based material.

[0153] 8. The panel assembly (400) according to item 4, wherein the second layer (112) is attached to the first layer (106) by coating or laminating.

[0154] 9. The panel assembly (400) according to any one of the preceding items, wherein the pivotable section (103) comprises a first locking element (111) configured to cooperate with a second locking element (205) formed in the groove (202), the first locking element (111) being a recess and the second locking element (205) being a protrusion or vice versa.

[0155] 10. The panel assembly (400) according to item 9, wherein the first locking element (111) is arranged on the front side (109) of the first panel (100) and wherein the second locking element (205) is arranged on a first side (206) of the groove (202) facing away from the main portion (104) of the first panel (100).

[0156] 11. The panel assembly (400) according to any of the preceding items, wherein the angle (A1) is between 20° and 80°, preferably between 40° and 70°.

[0157] 12. The panel assembly (400) according to any of the preceding items, wherein the main portion (104) is configured to be arranged essentially parallel with the edge surface (207, 203, 204) of the second panel (200).

[0158] 13. The panel assembly (400) according to any one of the preceding items, wherein the pivotable section (103) is configured to be arranged at an angle in relation to the depth direction (D1) when received in the groove (202) and essentially perpendicularly to the main portion (104).

[0159] 14. The panel assembly (400) according to any one of the preceding items, wherein the groove (202) is formed in an edge (207) of the second panel (200), the edge (207) being configured to face in a rearward direction of the panel assembly (400) and essentially in the normal direction of the plane of the main portion (104) of the first panel (100).

[0160] 15. The panel assembly (400) according to item 14, wherein the edge (207) of the second panel (200) comprises a first edge surface (203) and a second edge surface (204) being arranged on opposite sides of the groove (202), the first edge surface (203) being configured to abut against the main portion (104) of the first panel (100) and wherein the first edge surface (203) is recessed below the second edge surface (204).

[0161] 16. The panel assembly (400) according to item 1, wherein the groove (202) comprises an abutment surface (208) being arranged essentially parallel with the depth direction (D1) and against which the pivotable section (103) is configured to abut when inserted into the groove (202).

[0162] 17. A panel assembly (400) comprising a first panel (100) and a second panel (300), the first panel (100) comprising a first edge (101) and a second edge (102), the first and second edges (101, 102) being arranged at an angle in relation to one another, wherein the second panel (300) comprises a groove (302) for securing the first edge (101) of the first panel (100) to the second panel (300), the groove (302) having a depth direction (D4) that extends at an angle (A2) in relation to an inner surface (303, 304) of the second panel (300), wherein the groove (302) comprises a lower abutment surface (305) and an upper abutment surface (306) arranged on opposite sides of the groove (302) and wherein the lower abutment surface (305) is configured to force the first panel (100) into abutment with the upper abutment surface (306) when the first panel (100) is inserted into the groove (302).

[0163] 18. The panel assembly (400) according to item 17, wherein upper abutment surface (306) and the lower abutment surface (305) are mutually arranged such that a bending force is applied to the first panel (100) when the first edge (101) thereof is inserted into the groove (302) and when the first panel (100) is brought into a perpendicular relationship with the inner surface (303, 304) of the second panel (300).

[0164] 19. The panel assembly (400) according to item 17 or 18, wherein the depth direction (D4) is parallel to a guiding surface (307) of the groove (302), the guiding surface (307) being provided on the same side and adjacent to the lower abutment surface (305) in the groove (302), and wherein the angle (A2) is between 30° and 85°, preferably between 50° and 75°.

[0165] 20. The panel assembly (400) according to any of items 17 to 19, wherein the upper abutment surface (306) is configured to be in abutment with a front side (109) of the first panel (100) and the lower abutment surface (305) is configured to be in abutment with a rear side (108) of the first panel (100), and wherein the upper and lower abutment surfaces (306, 305) are arranged offset in relation to one another as measured in the plane of the first panel (100) and from an inner surface (303, 304) of the second panel (300).

[0166] 21. The panel assembly (400) according to any one of items 17 to 20, wherein the groove (302) further comprises a third locking element (308), wherein the third locking element (308) is formed by an edge between the upper abutment surface (306) and an inner surface (304) of the second panel (300), wherein the third locking element (308) is configured to form a contact region to generate increased friction against the first panel (100).

[0167] 22. The panel assembly (400) according to item 21, wherein the first panel (100) comprises a first layer (106) arranged at the rear side (108) and a second layer (112) arranged at the front side (109) of the first panel (100), wherein the second layer (112) is an aesthetic layer comprising a polymeric material, e.g. a melamine-based layer.

[0168] 23. The panel assembly (400) according to any one of items 17 to 22, wherein the groove (302) comprises a guiding surface (307) being arranged adjacent to the lower abutment surface (305) and adjacent to the side surface (303), and wherein the guiding surface (307) is arranged essentially parallel with the depth direction (D4) and wherein the lower abutment surface (305) is arranged at an angle (A6) in relation to the depth direction (D4).

[0169] 24. The panel assembly (400) according to item 23, wherein the depth direction (D4) is parallel to the guiding surface (307) of the groove (302), and wherein the angle (A6) is between 5° and 30°, preferably between 15° and 25°.

[0170] 25. The panel assembly (400) according to item 23, wherein the upper abutment surface (306) is essentially parallel with the lower abutment surface (305).

[0171] 26. The panel assembly (400) according to any one of items 17 to 25, further comprising a third panel (500) being configured to be arranged at an angle in relation to the first panel (100) and the second panel (300), the third panel (500) comprises a groove (502) for securing the second edge (102) of the first panel (100) to the third panel (500), the groove (502) having a depth direction (D5) that extends at an angle (A3) in relation to an inner surface (503, 504) of the second panel (100), wherein the groove (502) comprises a guiding surface (507) and an upper abutment surface (506) arranged on opposite sides of the groove (502) and wherein the guiding surface (507) is configured to force the first panel (100) into abutment with the upper abutment surface (506) when the first panel (100) is inserted into the groove (502).

[0172] 27. The panel assembly (400) according to item 26, wherein the groove (302) of the second panel (300) is aligned with the groove (502) of the third panel (500).

[0173] 28. The panel assembly (400) according to item 26 or 27, wherein the upper abutment surface (506) of the groove (502) in the third panel (500) is arranged essentially perpendicularly in relation to the inner surface (503, 504) of the third panel (500) and wherein the upper abutment surface (306) of the groove (302) in the second panel (300) is arranged at an angle such in relation to the inner surface (303, 304) of the second panel (300) such that an edge (308) is formed against first panel (100).

[0174] 29. The panel assembly (400) according any of items 26 to 28, wherein the groove (302) in the second panel (300) is configured to allow the first panel (100) to be inserted to a first insertion depth (D3) as measured from the inner surface (303, 304) and wherein the groove (502) in the third panel (500) is configured to allow the first panel (100) to be inserted to a second insertion depth (D2) as measured from the inner surface (503, 504), wherein the first insertion depth (D3) is larger than the second insertion depth (D2).

[0175] 30. A panel assembly (400) comprising a first panel (100) and a second panel (200), the first panel (100) comprising a first edge (101) and a second edge (102), the first and second edges (101, 102) being arranged at an angle in relation to one another, wherein the second panel (300) comprises a groove (302) for securing the first edge (101) of the first panel (100) to the second panel (300), the groove (302) having a depth direction (D4) that extends at an angle (A2) in relation to an inner surface (303, 304) of the second panel (300), wherein the groove (302) comprises a lower abutment surface (305) and an upper abutment surface (306) arranged on opposite sides of the groove (302) and wherein the lower abutment surface (305) is configured to force the first panel (100) into abutment with the upper abutment surface (306) when the first panel (100) is inserted into the groove (302), and wherein the upper abutment surface (306) comprises a third locking element (308) protruding therefrom and being configured to come into contact with the first panel (100).

[0176] 31. The panel assembly (400) according to item 30, wherein the upper abutment surface (306) and the lower abutment surface (305) are mutually arranged such that a bending force is applied to the first panel (100) when the first edge (101) thereof is inserted into the groove (302) and when the first panel (100) is brought into a perpendicular relationship with the inner surface (303, 304) of the second panel (300) and wherein the bending force from the upper abutment surface (306) is applied to the first panel (100) by the third locking element (308).

[0177] 32. The panel assembly (400) according to any of items 30 to 32, wherein the depth direction (D4) is parallel to a guiding surface (307) of the groove (302), the guiding surface (307) being provided on the same side and adjacent to the lower abutment surface (305) and being parallel therewith, wherein the angle (A2) is between 30° and 85°, preferably between 50° and 75°.

[0178] 33. The panel assembly (400) according to any of items 30 to 32, wherein the third locking element (308) is configured to be in abutment with a front side (109) of the first panel (100) and the lower abutment surface (305) is configured to be in abutment with a rear side (108) of the first panel (100), and wherein the upper and lower abutment surfaces (306, 305) are arranged offset in relation to one another as measured in the plane of the first panel (100) and from an inner surface (303, 304) of the second panel (300).

[0179] 34. The panel assembly (400) according to any one of items 30 to 33, further comprising a third panel (500) being configured to be arranged at an angle in relation to the first panel (100) and the second panel (300), the third panel (500) comprises a groove (502) for securing the second edge (102) of the first panel (100) to the third panel (500), the groove (502) having a depth direction (D5) that extends at an angle (A3) in relation to an inner surface (503, 504) of the third panel (500), wherein the groove (502) comprises a guiding surface (507) and an upper abutment surface (506) arranged on opposite sides of the groove (502) and wherein the guiding surface (507) is configured to force the first panel (100) into abutment with the upper abutment surface (506) when the first panel (100) is inserted into the groove (502).

[0180] 35. The panel assembly (400) according to item 34, wherein the groove (502) in the third panel (500) comprises a lower abutment surface (505) being arranged adjacent to the guiding surface (507) and arranged at an angle (A7) in relation to the guiding surface (507), the angle (A7) being between 5° and 30°, preferably between the 10° and 25°.

[0181] 36. The panel assembly (400) according to any one of items 30 to 35, wherein the first edge (101) of the first panel (100) comprises a first locking element (111) arranged on a front side (109) of the first panel (100), the first locking element (111) being configured to cooperate with the third locking element (308) of the upper abutment surface (306). 37. The panel assembly (400) according to item 36, wherein the first edge (101) further comprises a distally tapering surface (114) being provided distally of the first locking element (111) on the rear side (108) of the first panel (100).

[0182] 38. The panel assembly (400) according to item 36 or 37, wherein the first panel (100) comprises recess (113) arranged on a rear side (108) of the first panel (100) on the first side thereof, wherein the recess (113) is arranged at least partially proximally of the first locking element (111).

[0183] From the description above follows that, although various embodiments of the invention have been described and shown, the invention is not restricted thereto, but may also be embodied in other ways within the scope of the subject-matter defined in the following claims.

Claims

34CLAIMS1. A panel assembly (400) comprising a first panel (100) and a second panel (300), the first panel (100) comprising a first edge (101) and a second edge (102), the first and second edges (101, 102) being arranged at an angle in relation to one another, wherein the second panel (300) comprises a groove (302) for securing the first edge (101) of the first panel (100) to the second panel (300), the groove (302) having a depth direction (D4) that extends at an angle (A2) in relation to an inner surface (303, 304) of the second panel (300), wherein the groove (302) comprises a lower abutment surface (305) and an upper abutment surface (306) arranged on opposite sides of the groove (302) and wherein the lower abutment surface (305) is configured to force the first panel (100) into abutment with the upper abutment surface (306) when the first panel (100) is inserted into the groove (302).

2. The panel assembly (400) according to claim 1, wherein upper abutment surface (306) and the lower abutment surface (305) are mutually arranged such that a bending force is applied to the first panel (100) when the first edge (101) thereof is inserted into the groove (302) and when the first panel (100) is brought into a perpendicular relationship with the inner surface (303, 304) of the second panel (300).

3. The panel assembly (400) according to claim 1 or 2, wherein the depth direction (D4) is parallel to a guiding surface (307) of the groove (302), the guiding surface (307) being provided on the same side and adjacent to the lower abutment surface (305) in the groove (302), and wherein the angle (A2) is between 30° and 85°, preferably between 50° and 75°.

4. The panel assembly (400) according to any one of the preceding claims, wherein the upper abutment surface (306) is configured to be in abutment with a front side (109) of the first panel (100) and the lower abutment surface (305) is configured to be in abutment with a rear side (108) of the first panel (100), and wherein the upper and lower abutment surfaces (306, 305) are arranged offset in relation to one another as measured in the plane of the first panel (100) and from an inner surface (303, 304) of the second panel (300).

5. The panel assembly (400) according to any one of the preceding claims, wherein the groove (302) further comprises a third locking element (308), wherein the35third locking element (308) is formed by an edge between the upper abutment surface (306) and an inner surface (304) of the second panel (300), wherein the third locking element (308) is configured to form a contact region to generate increased friction against the first panel (100).

6. The panel assembly (400) according to claim 5, wherein the first panel (100) comprises a first layer (106) arranged at the rear side (108) and a second layer (112) arranged at the front side (109) of the first panel (100), wherein the second layer (112) is an aesthetic layer comprising a polymeric material, e.g. a melamine-based layer.

7. The panel assembly (400) according to any one of the preceding claims, wherein the groove (302) comprises a guiding surface (307) being arranged adjacent to the lower abutment surface (305) and adjacent to the side surface (303), and wherein the guiding surface (307) is arranged essentially parallel with the depth direction (D4) and wherein the lower abutment surface (305) is arranged at an angle (A6) in relation to the depth direction (D4).

8. The panel assembly (400) according to claim 7, wherein the depth direction (D4) is parallel to the guiding surface (307) of the groove (302), and wherein the angle (A6) is between 5° and 30°, preferably between the 15° and 25°.

9. The panel assembly (400) according to claim 7, wherein the upper abutment surface (306) is essentially parallel with the lower abutment surface (305).

10. The panel assembly (400) according to any one of the preceding claims, further comprising a third panel (500) being configured to be arranged at an angle in relation to the first panel (100) and the second panel (300), the third panel (500) comprises a groove (502) for securing the second edge (102) of the first panel (100) to the third panel (500), the groove (502) having a depth direction (D5) that extends at an angle (A3) in relation to an inner surface (503, 504) of the second panel (100), wherein the groove (502) comprises a guiding surface (507) and an upper abutment surface (506) arranged on opposite sides of the groove (502) and wherein the guiding surface (507) is configured to force the first panel (100) into abutment with the upper abutment surface (506) when the first panel (100) is inserted into the groove (502).

11. The panel assembly (400) according to claim 10, wherein the groove (302) of the second panel (300) is aligned with the groove (502) of the third panel (500).

12. The panel assembly (400) according claim 10 or 11, wherein the upper abutment surface (506) of the groove (502) in the third panel (500) is arranged essentially perpendicularly in relation to the inner surface (503, 504) of the third panel (500) and wherein the upper abutment surface (306) of the groove (302) in the second panel (300) is arranged at an angle such in relation to the inner surface (303, 304) of the second panel (300) such that an edge (308) is formed against first panel (100).

13. The panel assembly (400) according any of claims 10 to 12, wherein the groove (302) in the second panel (300) is configured to allow the first panel (100) to be inserted to a first insertion depth (D3) as measured from the inner surface (303, 304) and wherein the groove (502) in the third panel (500) is configured to allow the first panel (100) to be inserted to a second insertion depth (D2) as measured from the inner surface (503, 504), wherein the first insertion depth (D3) is larger than the second insertion depth (D2).

14. The panel assembly (400) according to any one of the preceding claims, wherein the groove (302) of the second panel (300) comprises a lateral recess (310) arranged beneath the upper abutment surface (306),the lateral recess (310) extending into the second panel (300) in a lateral direction (L) by a distance (D7),the distance (D7) being defined as a lateral component of a distance:from the upper abutment surface (306) to an inner portion (3101) of the lateral recess (310), and / orfrom an abutment-side opening edge (1011), at which the groove (302) intersects the inner surface (304) of the second panel (300), to the inner portion (3101) of the lateral recess (310),wherein the distance (D7) is at least 10%, at least 20%, or at least 30% of a thickness (T) of the first panel (100).

15. The panel assembly (400) according to any one of the preceding claims, wherein the lower abutment surface (305) of the groove (302) is located at a distance (D9) from the upper abutment surface (306) and / or from the abutment-side opening edge (1011),the distance (D9) being defined as a lateral component of a distance: between the lower abutment surface (305) and the upper abutment surface (306), and / orbetween the lower abutment surface (305) and the abutment-side opening edge (1011) of the groove (302),wherein the distance (D9) is at least 10%, at least 20%, or at least 30% smaller than a thickness (T) of the first panel (100)..

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