Floor panel assembly and associated connection device

Abstract

The present disclosure relates to a floor panel assembly comprising a first panel (1) and a second panel (1 '). A first edge portion (1a) of the first panel comprises an upwardly extending locking element (5), and a second edge portion (1b ') of the second panel comprises a downwardly open locking groove (6) configured to cooperate with the locking element for horizontal locking. The floor panel assembly comprises connecting means (2) configured to be at least partially arranged in the locking groove in a locked state (L1) of the first edge portion and the second edge portion. The outer portion of the strip (3) of the first panel comprises a cavity (30) extending below the upper surface (5c) of the locking element. The upper section of the connecting device comprises a projection (2b) extending from the body portion (2a), where the projection is arranged in the cavity in the locked state.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to a floor panel assembly comprising a connecting device. The connecting device is configured to position at least two adjacent panels, for example three or four adjacent panels, in the floor panel assembly relative to each other. The present disclosure also relates to the connecting device as such and to a corresponding wall panel assembly. BACKGROUND

[0002] WO 2023 / 146452 A1 discloses an improved assembly for aligning floor panels forming a four-way / four-way junction (X-cross) at a corner section. Such a junction can be required when a specific floor design is needed, such as when a floor covering is adapted to mimic tiles.

[0003] However, there is still a need for an alignment device that is suitable for a wider class of floor panels. Moreover, there can also be a need for an alignment device that is more stable at times. SUMMARY

[0004] It is therefore an object of at least certain embodiments of the present disclosure to provide a floor panel assembly in which the relative position between the panels can be better controlled by means of a connecting device, while this connecting device is suitable for a more general design of arbitrary panel thicknesses and / or panel locking devices.

[0005] It is a further object of at least certain embodiments of the present disclosure to provide a floor panel assembly that allows for an improved positioning of the connecting device.

[0006] It is also an object of at least certain embodiments of the present disclosure to provide a connecting device that is configured to provide a floor panel assembly that complies with any of the above objects.

[0007] These and other objects and advantages which will be apparent from the description herein of various aspects, embodiments, and examples, have been achieved.

[0008] According to a first aspect of the present disclosure, a floor panel assembly comprising a first panel and a second panel is provided. A first edge portion of the first panel comprises a strip extending horizontally beyond an upper portion of the first edge portion, wherein the strip comprises a locking element extending upwards, and wherein an outer portion of the strip comprises a preferably laterally open cavity extending below an upper surface, preferably a plane, of the locking element. A second edge portion of the second panel comprises a downwardly open locking groove configured to cooperate with the locking element for horizontally locking the first edge portion and the second edge portion to each other. The floor panel assembly further comprises a connecting device configured to be at least partially arranged in the locking groove in a locked state of the first edge portion and the second edge portion. An upper section of the connecting device comprises a protrusion extending from a main body portion, wherein the protrusion is configured to be arranged in the cavity in the locked state.

[0009] According to this first aspect, the protrusion can vertically position the connecting device relative to the first panel at the first edge portion. Further, the same type of connecting device can be used for various floor panel assemblies regardless of the panel thickness and / or the height of the locking element therein. For example, the distance from the back face of the first panel to the cavity (e.g. in the first edge portion) can be predetermined.

[0010] Here in general, cooperating elements (e.g. between panel elements, between connecting device elements and panel elements) can cooperate by direct or indirect engagement. In any of the embodiments described herein, a sealant, such as a wax, silicone, rubber strip or adhesive, can be provided between cooperating elements, thereby providing an example of indirect engagement.

[0011] The plane can be parallel to a horizontal plane extending along a front face of the first panel, and preferably extends along a front face of the second panel in the locked state.

[0012] The cavity can be provided above a shelf portion located in an outer portion of the strip, and the cavity is open upwards. Such a cavity can largely preserve the robustness of the strip (e.g. the locking element).

[0013] In some embodiments, the cavity can be provided above the shelf portion and further below a ceiling portion. Thus, the cavity can be at least partially hidden from above.

[0014] The cavity can be at least partially arranged laterally outside of the locking element, e.g. outside of an upper portion and / or an innermost portion of the locking element.

[0015] The positioning member can extend along the third edge portion and outside the area between the upper side edge of the first edge portion and the upper side edge of the second edge portion.

[0016] In the locked state of the third edge portion of the first panel and the fourth edge portion of the third panel, the positioning member can be arranged in a gap between one section of the third edge portion and one section of the fourth edge portion of the third panel.

[0017] The connecting device can comprise a positioning member configured to extend along the third edge portion of the first panel in the locked state, wherein the first edge portion and the third edge portion engage with each other at a corner portion of the first panel. By means of the positioning member, a relative horizontal displacement of one of the first panel and the second panel with respect to the other panel in a direction along the first edge portion and the second edge portion can be resisted or even completely prevented.

[0018] The positioning member can be further configured to extend along the third edge portion of the second panel in the locked state, wherein the second edge portion and the third edge portion engage with each other at a corner portion of the second panel.

[0019] The positioning member can comprise one arm portion configured to be arranged in the preferably laterally open cavity in the locked state, wherein the cavity is arranged in an outer portion of the strip of the third edge portion of the first panel, and wherein the cavity extends below an upper surface, preferably a plane, of the locking element arranged in the strip of the third edge portion. The arm portion can vertically position the connecting device with respect to the first panel at its third edge portion. By means of the cavities on the first edge portion and the third edge portion of the first panel and the protrusion and the arm portion, the positioning of the connecting device with respect to the first panel (and optionally the second panel, see below) can be improved independent of the remaining design of the locking device, e.g. the height of the locking element on the first edge portion and the third edge portion.

[0020] The positioning member can comprise a tapered end portion. The tapered end portion can be provided by a chamfer or bevel of the preferably vertical side wall of the end portion. One or both side walls of the end portion can have a chamfer or bevel. Thus, the guidance of the connecting device between the third edge portion and the fourth edge portion can be improved.

[0021] The body portion of the connecting device can be configured to be arranged in the locking groove in the locked state and to the horizontally outer side of the locking element of the first edge portion. For example, the body portion can resist or even completely prevent a relative displacement of the first panel and the second panel with respect to each other.

[0022] By means of the arm portion and / or the protrusion, the risk of unintentional displacement of the connecting element underneath the panel can be reduced or even eliminated.

[0023] In some embodiments, the positioning member can comprise a base portion, and no part of the positioning member extends over the strip of the third edge portion of the first panel.

[0024] The connecting device can further comprise an alignment element configured to extend along the first edge portion of the third panel of the floor panel assembly in the locked state of the first and second edge portions of the first and second panels and in the locked state of the third and fourth edge portions of the first and third panels. The alignment element can horizontally align the third panel relative to the first and / or second panel.

[0025] In the locked state of the first and second edge portions of the first and second panels and in the locked state of the third and fourth edge portions of the first and third panels, the alignment element can for example be arranged completely outside the horizontal of the first edge portion of the third panel. Thereby, the third panel can be horizontally aligned while allowing assembly of the fourth edge portion of the third panel onto the third edge portion of the first panel, for example by angularly tilting the third panel relative to the first panel. For example, displacement of the alignment element can not be required.

[0026] The alignment element can comprise a lug member configured to be arranged in a cavity of the first edge portion of the third panel in the locked state of the first and second edge portions and in the locked state of the third and fourth edge portions. The cavity can be arranged in an outer portion of the strip of the first edge portion of the third panel, wherein the cavity extends below an upper surface, preferably a plane, of a locking element arranged in the strip. The lug member can improve the positioning of the connecting device, preferably at least relative to the third panel, and / or make the positioning more robust. For example, the risk of tilting of the connecting device, for example of the alignment element, relative to the panels can be reduced. Also, the lug member can further reinforce the connecting device.

[0027] The alignment element can be flexible. The alignment element can be configured to be displaced horizontally outwardly during assembly of the fourth edge portion of the third panel onto the third edge portion of the first panel, for example by angularly tilting the third panel relative to the first panel. The outward displacement can be caused by the cooperation between the actuation member of the third panel and the lug member.

[0028] The horizontal locking of the locking groove and the locking element can be independent of the connecting device.

[0029] The floor panel assembly can further comprise a tongue and a tongue groove for locking the first and second edge portions in the vertical direction.

[0030] The tongue can be a separate tongue, for example a separately formed tongue.

[0031] The tongue can be integrally formed with the second panel, for example formed in a core thereof.

[0032] The connecting device can comprise a polymer-based material, such as a thermoplastic material, for example polylactic acid (PLA) or polypropylene (PP). Optionally, the polymer-based material can comprise a reinforcing filler, for example glass fibers. The connecting device can comprise 20-100 wt% of the polymer-based material, for example 40-100 wt%, 60-100 wt% or 80-100 wt% of the polymer-based material. The connecting device can comprise 20-80 wt%, for example 30-60 wt% of the reinforcing filler. It is also conceivable to use other materials, for example metals, such as aluminum.

[0033] Any pair of first and second edge portions of a pair of panels as presented herein, in particular the first edge portion of the first panel and the second edge portion of the second panel, can be configured to be assembled together with each other by a relative substantially vertical displacement of the pair of panels (e.g. the first and second panels) against each other, preferably by a so-called vertical folding (scissor movement).

[0034] Similarly, any pair of third and fourth edge portions of a pair of panels as presented herein, in particular the third edge portion of the first panel and the fourth edge portion of the third panel, can be configured to be assembled together with each other by an angular inclination of the pair of panels (e.g. the third and first panels) relative to each other.

[0035] Optionally, any pair of first and second edge portions of a pair of panels as presented herein, in particular the first edge portion of the first panel and the second edge portion of the second panel, can be configured to be assembled together with each other by an angular inclination of the pair of panels (e.g. the first and second panels) relative to each other.

[0036] Similarly, any pair of third and fourth edge portions of a pair of panels as presented herein, in particular the third edge portion of the first panel and the fourth edge portion of the third panel, can be configured to be assembled together with each other by a relative substantially vertical displacement of the pair of panels (e.g. the third and first panels) against each other.

[0037] Each panel in the floor panel assembly may include a decorative joint portion along at least one (preferably all) of its edges. For such panels, horizontal and / or vertical positioning is particularly important for providing an aesthetically pleasing assembly. For example, these panels may mimic ceramic tiles.

[0038] The main body of the connecting device and / or the alignment element can be positioned at a non-perpendicular angle relative to the positioning component, such as 60° or 120°. Therefore, the connecting device can be used to position non-rectangular panels, such as herringbone panels.

[0039] According to a second aspect of this disclosure, a floor panel assembly as described in independent claim 22 is provided. Embodiments and examples of the second aspect (e.g., lug members) are largely similar to those of the first aspect and are therefore applicable.

[0040] According to a third aspect of this disclosure, a connection device as described in independent claim 23 is provided. Embodiments and examples of the third aspect are largely similar to those of the first aspect and are therefore applicable. Furthermore, the following embodiments are contemplated.

[0041] The arm portion can be positioned vertically above or below the protrusion.

[0042] The connecting device may further include a sealing member.

[0043] According to a fourth aspect of this disclosure, a wall panel assembly is provided. The embodiments and examples of the fourth aspect are largely similar to those of the first aspect and are therefore applicable. However, it should be emphasized that the floor paneling is replaced by the wall paneling.

[0044] The foregoing has described various aspects of this disclosure primarily with reference to several embodiments. However, as will be readily understood by those skilled in the art, other embodiments besides those disclosed above are also possible within the scope of various aspects of this disclosure.

[0045] Generally, unless otherwise expressly defined herein, all terms used in the following claims shall be interpreted according to their ordinary meaning in the art. All expressions relating to “a / an / the [element, device, component, mechanism, step, etc.]” ​​shall be openly interpreted as referring to at least one instance of said element, device, component, mechanism, step, etc., unless otherwise expressly stated. When referring to one or more of “at least one element,” it may be simply referred to as “the element / the element.” Attached Figure Description

[0046] The present disclosure will now be described in more detail with reference to exemplary embodiments and the accompanying exemplary drawings, wherein:

[0047] Figures la-lc , Figure 2a Perspective view ( Figures la-lb ) and surrounding Figures la-lb Section A in Figure lc ) and section B ( Figure 2a The enlarged partial view shows an embodiment of the floor paneling assembly.

[0048] Figures 2b-2d A schematic diagram of an embodiment of the assembled panel is shown in top view. Figures 2b-2c ), and a schematic diagram of an embodiment of the panel surrounding the corner portion ( Figure 2d ).

[0049] Figures 3a-3b Along Figures la-lb and Figures 2b-2c The cross-sectional side views DD and EE of either one show L1 in the locked state. Figure 3a ) and L2 ( Figure 3b Examples of panels.

[0050] Figures 3c-3d Along Figure lb and Figures 2b-2c The cross-sectional side views FF and GG of either one show L3 in the locked state. Figure 3d ) and L4 ( Figure 3c Examples of panels.

[0051] Figures 4a-4d An embodiment of the connecting device is shown in perspective view. Figures 4a-4b For example, it is applicable to Figures la-lc , Figures 2a-2d , Figures 3a-3d and Figures 4c-4h Any of the above, and an embodiment of the panel is shown in a cross-sectional side view. Figures 4c-4d ).

[0052] Figures 4e-4f Along Figures la-lb and Figures 2b-2c The cross-section DD of any one of them shows an embodiment of the panel in the locked state L1. Figure 4e ), and along Figures la-lb and Figures 2b-2c The cross-sectional side views EE and / or GG of either one show an embodiment of the panel in the locked state of L2 and / or L3. Figure 4f ).

[0053] Figures 4g-4h The paneling around the corner section is shown (e.g.) Figures 4e-4f An embodiment of any of the panels in the example.

[0054] Figures 5a-5d An embodiment of the connecting device is shown in perspective view. Figures 5a-5b ), and with an enlarged partial perspective view ( Figure 5c ) and side view ( Figure 5d An embodiment of a floor panel assembly including the connecting device is shown during assembly.

[0055] Figures 6a-6c It shows the assembly process ( Figures 6a-6b ) and in locked state ( Figure 6c ),include Figures 5a-5b An embodiment of a floor panel assembly with a connecting device of the type shown.

[0056] Figure 7 An embodiment of the connecting device is shown in perspective, which is, for example, suitable for... Figures la-lc , Figures 2a-2d , Figures 3a-3d and Figures 4c-4h Any one of them.

[0057] Figures 8a-8b Along Figure lb and Figures 2b-2c A cross-sectional side view FF of any one of them shows the process during assembly. Figure 8a ) and in locked state L4 ( Figure 8b Example of a panel.

[0058] Figures 9a-9d Perspective view ( Figure 9a ) and top view ( Figure 9b An embodiment of the connecting device is shown, and is illustrated along the respective... Figures la-lb and Figures 2b-2c The cross-sectional side views DD and EE, GG of any one of them show the locked state L1 ( Figure 9c L2 and / or L3 Figure 9d Examples of floor panel assemblies including such connection devices are described below.

[0059] Figures 10a-10f Using perspective views respectively Figure 10a ), side view ( Figure 10b ) and top view ( Figure 10c An embodiment of the connecting device is shown, and a top view of an embodiment of a floor panel assembly including such a connecting device is shown. Figure 10d ), and respectively along Figure 10d The cross-sectional side views DD, FF and EE, GG show the locked states L1 and / or L4 ( Figure 10e ) and L2 and / or L3 ( Figure 10fembodiments of a floor panel assembly comprising such a connecting device.

[0060] Figures 11a-11d An embodiment of a connecting device is shown in perspective view Figure 11a , and in enlarged cross-sectional bottom view Figure 11b of regions H and J in Figure 11b , and Figures 11c-11d embodiments of a floor panel assembly comprising such a connecting device.

[0061] Figures 11e-11f An embodiment of a floor panel assembly in Figure 11b and 11d is shown in schematic view along cross-sectional side view D-D and E-E, respectively, in locked state LI Figure 11e and L2 Figure 11f , and / or in schematic view along cross-sectional side view F-F and G-G, respectively, in locked state L4 Figure 11e and L3 Figure 11f .

[0062] Figures 12a-12c An embodiment of a connecting device is shown in perspective view Figure 12a , side view Figure 12b , and top view Figure 12c , for example for use in any one of Figures 10d-10f . DETAILED DESCRIPTION

[0063] Next, a number of exemplary embodiments of a floor panel assembly will be described with reference to Figures la-lc , Figures 2a-2d , Figures 3a-3d , Figures 4a-4h , Figures 5a-5d , Figures 6a-6c , Figure 7 , Figures 8a-8b , Figures 9a-9d , Figures 10a-10f , Figures 11a-11f and Figures 12a-12c . The floor panel assembly comprises a first panel 1 and a second panel 1’, and preferably a third panel 1’’ and / or a fourth panel 1’’’. For example, the panels can mimic tiles. The thickness T (preferably the maximum thickness) of the panels 1, 1’, 1’’, 1’’’ herein can be 3-25 mm or 3-20 mm, preferably 10-20 mm or 4-10 mm. The floor panel assembly can provide a floor covering that is preferably suspended above a floor surface 20 in a joined manner, and optionally comprises an underlay member, for example a foam. In some embodiments, however, the floor panel assembly can be glued to the floor surface 20.

[0064] In non-limiting examples, the floor panels described herein can be thermoplastic-based panels, thermoset-based panels, ceramic tiles, or wood-based panels. By way of example, each panel can be a laminate panel, a wood powder-based panel (optionally comprising a veneer layer), a ceramic tile attached to a thermoplastic core, a mineral-based panel (e.g. comprising magnesium oxide and optionally magnesium chloride (e.g. MgCh) and / or magnesium sulfate (e.g. MgS04)), a luxury vinyl tile (LVT tile), a stone plastic (polymer) composite panel (SPC panel), or an expanded polymer core panel (EPC panel) (also known as a waterproof core panel (WPC panel)). Any of these panels can well mimic a ceramic tile.

[0065] Each of the first panel 1, the second panel 1’, the third panel 1’’ and the fourth panel 1’’’ can comprise a first edge portion la, la’, la’’, la’’’, a second edge portion lb, lb’, lb’’, lb’’’, a third edge portion lc, lc’, lc’’, lc’’’, and a fourth edge portion Id, Id’, Id’’, Id’’’. The first and second edge portions (the third and fourth edge portions) of each panel can be arranged opposite to each other, preferably parallel to each other. For example, the third and fourth edge portions (the first and second edge portions) can extend along a first horizontal direction X (a second horizontal direction Y). The thickness direction of these panels can be parallel to the vertical direction Z. These panels can be rectangular. However, in some embodiments, these panels are not rectangular, but for example herringbone panels whose shape is a parallelogram, see Figure 11b In such a case, the first edge portion (or the second edge portion) of each panel can form an angle , with the third edge portion (or the fourth edge portion), see Figure 11b In a first example, for example in Figures la-lc , Figures 2a-2d , Figures 3a-3d , Figures 4c-4h , Figures 5c-5d , Figures 6a-6c , Figures 8a-8b and Figures 9c-9d , the first and second edge portions (the third and fourth edge portions) are short edge portions (long edge portions). In a second example, for example in Figures 10d-10f and Figures 11b-11f , the first and second edge portions (the third and fourth edge portions) are long edge portions (short edge portions). However, in some embodiments, these panels can be square.

[0066] The panels 1, 1', 1", 1"'can be substantially identical to each other. In some embodiments, however, in the case of non-rectangular panels, the floor panel assembly can comprise a first type of panel 40 and a second type of panel 41, resulting in a first type and a second type of joint, see Figure 11b regions H and J in Fig.

[0067] The first edge portion la (second edge portion lb' ') and the third edge portion lc (fourth edge portion Id' ') can be joined to each other at a corner portion le (le' ') of the first panel 1 (fourth panel 1"'). The second edge portion lb' (first edge portion la' ') and the third edge portion lc' (fourth edge portion Id' ') are joined to each other at a corner portion le' (le' ') of the second panel 1' (third panel 1"'). The panels 1, 1', 1", 1"'can be assembled to each other such that they form a four-way joint at their corner portions le, le', le", le' '. The upper side edges If of these edge portions, provided adjacent to the front face lg of the panels 1, 1', 1", 1" ', can thus form a cross, see Figures 2b-2d and 4g-4h, or an irregular cross, see Figure 11b .

[0068] Each panel can comprise mechanical locking means for locking the panel horizontally and preferably vertically to an adjacent panel. For example, as shown in Figure 3a , Figures 2b-2c , Figure 4e , Figure 9c , Figures 10d-10e and Figure 11e ( Figure 3c , Figures 2b-2c , Figure 8b , Figure 9c , Figures 10d-10e and Figure 11e ) the first edge portion la (la' ') and the second edge portion lb' (lb' ') can be locked to each other to obtain a locked state LI (L4). Further, for example Figure 3b , Figures 2b-2c , Figure 4f , Figure 9d , Figure 10d , Figure 10f and Figure 11f ( Figure 3d , Figures 2b-2c , Figure 4f , Figure 9d , Figure 10d , Figure 10f and Figure 11fAs shown, the third edge portion 1c (1c') and the fourth edge portion 1d'' (1d''') can be locked to each other to obtain a locked state L2 (L3). Locked state L1 (L4) may include a horizontal lock and optional vertical lock of the first edge portion 1a (1a'') and the second edge portion 1b' (1b''') relative to each other. Locked state L2 (L3) may include a horizontal lock and optional vertical lock of the third edge portion 1c (1c') and the fourth edge portion 1d'' (1d''') relative to each other.

[0069] With all four panels 1, 1', 1'', 1''' locked in the states L1, L2, L3, L4, the corner sections 1e, 1e', 1e'', 1e''' can face each other.

[0070] For example, such as Figure 2d , Figure 3a , Figure 4c , Figure 4e , Figures 4g-4h , Figure 9c , Figure 10e and Figure 11e As shown, the first edge portion 1a includes a strip 3 extending horizontally beyond its upper portion 4a. This strip 3 includes an upwardly extending locking element 5, preferably located at the outer portion 3a of the strip 3. Furthermore, the second edge portion 1b' includes a downwardly opening locking groove 6 configured to engage with the locking element 5 for horizontally locking the first edge portion 1a and the second edge portion 1b' to each other. For example, the upper portions 4a, 4b of the first edge portion 1a and the second edge portion 1b', as well as the inner surface 5a of the locking element 5 and the outer surface 6a of the locking groove 6, can engage to achieve horizontal locking. The horizontal locking of the locking groove 6 with the locking element 5 can be independent of the connecting device 2.

[0071] It should be emphasized that, after appropriate modifications, Figures 4c-4d It can be presented as with Figures 10d-10f The same method as the panels in 11b-11f.

[0072] The outer portion 3a of the strip 3 includes a cavity 30, preferably laterally open, extending below the upper surface 5c (e.g., the uppermost surface) of the locking element 5, preferably below its plane P1. The cavity 30 may be at least partially arranged on the horizontal outer side of the locking element 5, for example, outside the upper portion 5d and / or the innermost portion 5e of the locking element. For example, the cavity 30 may be completely arranged on the horizontal outer side of the locking element 5. The cavity 30 may be positioned above the shelf portion 31 arranged in the outer portion 3a. Preferably, as... Figure 2d , Figure 3a , Figure 4c, Figure 9c , Figure 10e and Figure 11e most clearly shown in Figure 4e and Figures 4g-4h , the cavity 30 can be at least partly hidden from above. Hence, the cavity can be provided below a ceiling portion 34, which is preferably provided in the outer portion 3a. For example, the ceiling portion 34 can be arranged below, or at least partly in, the locking element 5.

[0073] The cavity 30 can extend towards a horizontal inner side of a vertical plane W1 provided along the outermost surface 3b of the outer portion 3a. The cavity 30, and optionally the shelf portion 31, can extend along substantially the entire first edge portion 1a, see Figure 2d and Figure 4g . However, in some embodiments, the cavity 30, and optionally the shelf portion 31, can extend along a portion of the first edge portion 1a, for example arranged in a corner portion 1e of the first panel 1, see Figure 4h .

[0074] Optionally, the panel 1, 1’ further comprises a tongue 11 and a tongue groove 12 for vertical locking of the first edge portion 1a and the second edge portion 1b’. For example, as shown in Figure 3a , the tongue 11 and the tongue groove 12 can be provided in the first edge portion 1a and the second edge portion 1b’, respectively. For example, the tongue 11 can be a separate and preferably flexible tongue provided in a displacement groove 11a. However, it is also conceivable to provide the tongue 11 and the tongue groove 12 in the second edge portion 1b’ and the first edge portion 1a, respectively, see for example Figure 10e , wherein the tongue 11 is integrally formed with the second panel 1’, for example in a core portion 29 thereof. In both cases, a similar configuration of a tongue 11’ and a groove 12’ is preferably also employed in the first edge portion 1a’’ and the second edge portion 1b’’’, see for example Figure 3c , Figure 10e , Figure 4c and Figure 4d (contrary reference numerals). It is noted that some of the separate tongues have been removed in the figures here for improved clarity.

[0075] For example as shown in Figure 2d , Figure 3b , Figure 4d , Figures 4f-4h , Figure 9d and Figure 10fAs shown, the third edge portion 1c comprises a strip 13 extending horizontally beyond its upper portion 14a. The strip 13 comprises an upwardly extending locking element 9, which is preferably located at an outer portion 13a of the strip 13. Further, the fourth edge portion 1d’’ comprises a downwardly opening locking groove 10, which is configured to cooperate with the locking element 9 for horizontally locking the third edge portion 1c and the fourth edge portion 1d’’ to each other. For example, the upper portions 14a, 14b of the third edge portion 1c and the fourth edge portion 1d’’ and the inner surface 9a of the locking element 9 and the outer surface 10a of the locking groove 10 can cooperate to achieve the horizontal locking.

[0076] Optionally, the panel 1, 1’’ further comprises a tongue 11b and a tongue groove 12a for vertical locking of the third edge portion 1c and the fourth edge portion 1d’’. Figure 3b As shown, the tongue 11b and the tongue groove 12a can be provided in the fourth edge portion 1d’’ and the third edge portion 1c, respectively. For example, the tongue 11b can be integrally formed with the third panel 1’’ e.g. in its core 29. However, it is also conceivable to provide the tongue 11b and the tongue groove 12a in the third edge portion 1c and the fourth edge portion 1d’’ respectively, see e.g. Figure 10f wherein the tongue 11b is a separate and preferably flexible tongue provided in a displaced groove 11c. In both cases, a similar configuration of a tongue 11b’ and a groove 12a’ is preferably also employed in the third edge portion 1c’ and the fourth edge portion 1d’’’, see e.g. Figure 3d , Figure 10f , Figure 4d , Figures 4f-4h and 4c (opposite reference signs). The tongue 11b’ can be a separate and preferably flexible tongue provided in a displaced groove 11c’.

[0077] Similar mechanical locking devices as described on the edge portions 1a, 1b’, 1c, 1d’’ can be provided in the respective edge portions of the panels 1, 1’, 1’’, 1’’’. For example, as Figure 3c and Figure 10eAs shown, the locking elements 5' provided in the strip 3' of the first edge portion la" can be configured to cooperate with the downwardly open locking grooves 6' in the second edge portion lb"' for horizontally locking the first edge portion la" and the second edge portion lb"' to each other. The elements 4a', 4b', 11', 11a', 12' can be implemented in the same form as the elements 4a, 4b, 11, 11a, 12 described elsewhere herein, whereby reference can be made thereto. Furthermore, the locking elements 9' provided in the strip 13' of the third edge portion lc' can be configured to cooperate with the downwardly open locking grooves 10' in the fourth edge portion Id"' for horizontally locking the third edge portion lc' and the fourth edge portion Id"' to each other, see for example Figure 3d and Figure 10f . The elements 3', 3a', 4a', 4b', 5', 5c', 9', 11', 11a', 11b', 11c', 12', 12a', 13', 13a', 14a', 14b', etc., for example as shown in Figures 3c-3d , can be implemented in the same form as the elements 3, 3a, 4a, 4b, 5, 5c, 9, 11, 11a, 11b, 11c, 12, 12a, 13, 13a, 14a, 14b, etc., described elsewhere herein, whereby reference can be made thereto.

[0078] In some embodiments, as shown in Figures 9c-9d and Figures 11e-11f , any pair or even all of the upper portions 4a, 4b, 4a', 4b', 14a, 14b, 14a', 14b' can comprise a supplementary tongue 43 and a supplementary tongue groove 44, such that they horizontally overlap. The supplementary tongue 43 and the tongue groove 44 can contribute to the vertical locking of the panels and / or can provide sealing of the joint.

[0079] Next, reference is made to for example Figure lc , Figure 2a , Figure 2d , Figure 3b , Figure 3d , Figure 4d , Figures 4f-4h , Figure 9d , Figure 10f and Figure 11fThe outer portion 13a of the strip 13 can comprise a preferably laterally open cavity 32 extending below the upper surface 9c, e.g. the uppermost surface, of the locking element 9, preferably below the plane P2 thereof. Optionally or additionally, the outer portion 13a' of the strip 13' can comprise a preferably laterally open cavity 32' extending below the upper surface 9c', e.g. the uppermost surface, of the locking element 9', preferably below the plane P4 thereof. The cavity 32 (32') can be arranged at least partially horizontally outside the locking element 9 (9'), e.g. outside the upper portion 9d (9d') and / or the innermost portion 9e (9e') of the locking element. For example, the cavity 32 (32') can be arranged completely horizontally outside the locking element 9 (9'). The cavity 32 (32') can be provided above a shelf portion 33 (33') arranged in the outer portion 13a (13a'). Preferably, the cavity 32, 32' is open upwards, see Figure lc , Figure 2a , Figure 2d , Figure 3b , Figure 3d , Figure 4d and Figure 11f . However, as shown in Figures 4f-4h , in some embodiments the cavity 32, 32' can be at least partially hidden from above. The cavity can be provided below a ceiling portion 35, 35' which is preferably provided in the outer portion 13a, 13a'. For example, the ceiling portion 35, 35' can be arranged below the locking element 9, 9', or at least partially in the locking element 9, 9'. In yet other embodiments, there is no cavity 32 and / or 32' having the above-mentioned features.

[0080] The cavity 32 (32') can extend towards a horizontal inner side of a vertical plane W2 (W2') provided along the outermost surface 13b (13b') of the outer portion 13a (13a'). The cavity 32 (32') and optionally the shelf portion 33 (33') can extend along substantially the entire third edge portion 1c (1c'), see Figure 4g . However, in some embodiments the cavity 32 (32') and optionally the shelf portion 33 (33') can extend along a portion of the third edge portion 1c (1c'), e.g. arranged in the corner portion 1e (1e') of the first panel 1 (second panel 1'), see Figure 4h .

[0081] The first edge portion 1a (1a'') and the second edge portion 1b' (1b''') (e.g. Figures la-lc , Figures 2a-2d , Figure 3a , Figure 3c , Figure 4c ,Figure 4e , Figures 4g-4h , Figures 5c-5d , Figures 6a-6c , Figures 8a-8b and Figure 9c The first and second edge portions shown can be configured to be assembled together by the basic vertical relative displacement of the first panel 1 (third panel 1'') and the second panel 1' (fourth panel 1''') against each other, see page 16, lines 30 to 17, lines 11 of WO 2006 / 043893A1. Figure 2a -2e and Figures 5a-5b Its contents are incorporated herein by reference. Optionally or preferably additionally, the third edge portion 1c (1c') and the fourth edge portion 1d'' (1d''') (e.g. Figures la-lc , Figures 2a-2d , Figure 3b , Figure 3d , Figure 4d , Figures 4f-4h , Figures 5c-5d , Figures 6a-6c and Figure 9d The third and fourth edge portions can be constructed to be assembled together by means of the third panel 1'' (second panel 1') and the first panel 1 (fourth panel 1''') being tilted relative to each other at an angle.

[0082] Optionally, the first edge portion 1a (1a'') and the second edge portion 1b' (1b''') (e.g. Figure 10e and Figure 11e The first and second edge portions (in the first and second edge portions) can be configured to be assembled together by means of the first panel 1 (third panel 1'') and the second panel 1' (fourth panel 1''') being inclined relative to each other at an angle. Optionally or preferably additionally, the third edge portion 1c (1c') and the fourth edge portion 1d'' (1d''') (e.g. Figure 10f and Figure 11f The third and fourth edge portions can be constructed to be assembled together by the basic vertical relative displacement of the third panel 1'' (second panel 1') and the first panel 1 (fourth panel 1''') against each other.

[0083] The floor panel assembly also includes a connecting device 2, which is configured to be at least partially disposed in a locking groove 6 in the locked state L1, see, for example Figure 3a , Figures 4a-4b , Figure 4e , Figure 7 , Figures 9a-9c , Figures 10a-10e , Figures 11a-11e and Figures 12a-12cThe connecting device 2 comprises a positioning member 7 configured to extend along the third edge portion 1c in the locked state L1. The connecting device 2 can comprise a polymer-based material (e.g. PLA or PP) or a metal (e.g. aluminium), for example. In a non-limiting example, the connecting device 2 can have a longitudinal extension length LB and / or LP of 8-50 millimetres, for example 10-30 millimetres.

[0084] The connecting device 2 can comprise a body portion 2a configured to be arranged in the locking groove 6, preferably completely outside the level of the locking element 5 and / or the second edge portion 1b’ (e.g. the outermost surface 3b), in the locked state L1, see e.g. Figure 3a and Figure 4e The body portion can be provided in the gap 15a between one section of the first edge portion 1a and one section of the second edge portion 1b’. Furthermore, in the locked state L1, a base portion 7c of the positioning member 7 can preferably extend completely outside the level of the locking element 9 and / or the third edge portion 1c (e.g. the outermost surface 13b), see e.g. Figure 3b The positioning member 7 can extend along the third edge portion 1c outside the area between the upper side edge 1f of the first edge portion 1a and the upper side edge 1f of the second edge portion 1b’. The positioning member can be provided in the gap 15b between one section of the third edge portion 1c and one section of the fourth edge portion 1d”. The positioning member 7 can be connected to the body portion 2a, and the longitudinal extension lengths LP, LB of the positioning member 7 and the body portion 2a can be arranged at an angle a, for example substantially perpendicularly to each other, see e.g. Figures 4a-4b , Figures 5a-5b , Figure 7 , Figures 9a-9b , Figures 10a-10c and Figures 12a-12c or at a non-perpendicular angle a (e.g. 60° or 120°), see e.g. Figures 11a-11d For example, especially for the perpendicularly arranged longitudinal extension lengths, the longitudinal extension length LB can be greater or smaller than LP, or LP and LB can be substantially equal. Alternatively, for example in Figures 11a-11f , the longitudinal extension length LP can be greater than the longitudinal extension length LB of the combination of the body portion 2a and an alignment element 8 (defined below).

[0085] For example, as Figure 1c and Figure 4a , 4b (including the leftmost dashed line), Figures 5a-5b , Figure 10a , Figure 11a and Figure 12aAs shown, the positioning member 7 can be further configured to extend along the third edge portion 1 c' in the locked state L1. Thus, the positioning member can be further provided in the gap 15c between one section of the third edge portion 1 c' and one section of the fourth edge portion 1 d''', see e.g. Figure 3d , Figure 10f and Figure 11f . The longitudinal extension length LP of the positioning member 7 can thereby span the two sides 2c, 2d of the body portion 2a. Thus, the positioning member can comprise a first positioning portion 7d and a second positioning portion 7e extending along the longitudinal extension length LP on both sides of the body portion 2a. In the locked state L1, the base portion 7c can preferably extend completely outside the level of the locking element 9' and / or the third edge portion 1 c' (e.g. the outermost surface 13b'). Preferably, the positioning member 7 is provided along the third edge portion 1 c' such that the positioning member 7 extends towards the level inner side of the locking groove 6 (along the first direction X) with respect to the second panel 1 ', see Figure 1c , Figure 5c and Figure 11e .

[0086] As shown in Figures 10a-10c and Figures 12a-12c , the positioning member 7 can optionally comprise a tapered end portion 39. Such a tapered end portion 39 can improve the guidance of the connecting device 2 between the third edge portion 1 c and the fourth edge portion 1 d''. The tapered end portion 39 can be provided by a chamfer or bevel of the preferably vertical side walls 7f, 7g of this end portion. One or both side walls 7f, 7g of the end portion 39 can have a chamfer or bevel. For example, the tapered end portion 39 can comprise at least one tapered side wall 7f, 7g, e.g. two tapered side walls 7f, 7g. Alternatively or additionally, the tapered end portion 39 can comprise an inclined top wall 7i. It is emphasized that in other embodiments herein, e.g. the embodiment shown in Figures 11a-11f , it is envisaged that the tapered end portion 39 has e.g. tapered side walls 7f, 7g and / or an inclined top wall 7i.

[0087] In the locked state L1, the body portion 2a (e.g. its side 2c) can be in engagement with the outer portion 3a (e.g. with its outermost surface 3b), see e.g. Figure 3a , or with the outer surface 5b of the locking element 5, see e.g. Figure 4eOptionally or additionally, the body portion 2a, e.g. a side 2d thereof, can engage with the locking groove 6, e.g. with an inner surface 6b thereof. The body portion can be straight, e.g. comprising planar sides 2c and 2d. In the locked state LI, the base portion 7c, e.g. a side wall 7f thereof, can engage with the outer portion 13a and / or 13a', e.g. with an outermost surface 13b and / or 13b' thereof, see e.g. Figure 3b and 3d , or with an outer surface 9b, 9b' of the locking element 9 and / or 9', see e.g. Figure 4f . Optionally or additionally, the base portion 7c, e.g. a side wall 7g thereof, can engage with the locking groove 10 and / or the locking groove 10', e.g. with an inner surface 10b and / or 10b' thereof. The base portion can be straight, e.g. comprising planar side walls 7f, 7g.

[0088] Thus, the connection device 2 can be substantially L-shaped (see e.g. the solid line in Figure 4b ), T-shaped (see e.g. the solid line and the leftmost dashed line in Figure 4b ), or cross-shaped (see e.g. the solid line and all dashed lines in Figure 4a , Figures 5a-5b , Figure 9a , Figure 10a , Figure 12a and Figure 4b . In some embodiments, the connection device 2 can have an irregular cross-shaped shape, such that the end points of the body portion 2a, the positioning member 7, and the alignment element 8 (defined hereinafter) extend along the vertices of a quadrilateral, e.g. an irregular quadrilateral (see e.g. the solid line and all dashed lines in Figure 11a ).

[0089] The connection device 2 can extend substantially to the ground 20, e.g. such that at least a portion thereof is in contact with the ground 20. However, in some embodiments, e.g. as shown in Figure 1c and Figures 11e-11f , a gap 21 can exist between the ground 20 and one or more of the body portion 2a, the base portion 7c, and the alignment element 8 (defined hereinafter). For example, a gap 21 can exist between the ground 20 and the body portion 2a.

[0090] The connecting device 2 comprises a protrusion 2b which is configured to be arranged in the cavity 30 in the locked state L1. Hence, the protrusion 2b, e.g. its bottom surface 2e, can be at least partially or even completely positioned below the upper surface 5c. The protrusion 2b extends from the main body portion 2a and is provided in the upper section 27 of the connecting device 2. The protrusion 2b can extend preferably horizontally from the main body portion 2a and can face the first edge portion 1a in the locked state L1. The protrusion 2b, e.g. its bottom surface 2e, can engage with the shelf portion 31, e.g. with its upper surface portion 36.

[0091] The positioning member 7 optionally comprises an arm portion 7a which is configured to be arranged in the cavity 32 and / or 32’ in the locked state L1, see e.g. Figure 1c 、 Figure 2a 、 Figure 3b 、 Figure 3d 、 Figure 4a 、 Figure 4f 、 Figures 5a-5b and Figure 7 Hence, the positioning member 7, e.g. its bottom surface 7b, can be at least partially or even completely positioned below the upper surfaces 9c and / or 9c’. The arm portion 7a can vertically position the first panel 1 and the second panel 1’ relative to each other. The arm portion 7a can extend preferably horizontally from the base portion 7c. The arm portion 7a, e.g. its bottom surface 7b, can engage with the shelf portion 33 and / or 33’, e.g. with its upper surface portion 37 and / or 37’.

[0092] In a first example, the topmost surface 2h of the connecting device 2 is positioned vertically below at least one, e.g. each, of the upper surfaces 5c, 9c and 9c’, see Figures 3a-3d In a second example, the topmost surface 2h is positioned at substantially the same vertical height as at least one, e.g. each, of the upper surfaces 5c, 9c and 9c’, see Figure 9c In this second example, the locking groove 6, 10, 10’ can be filled more substantially and / or the vertical thickness of the panel 1’, 1”, 1”’ above the locking groove can be increased, which means that the panel and / or the locking device can become more robust.

[0093] In some embodiments, as Figure 4b 、 Figures 9a-9d 、 Figures 10a-10f 、 Figures 11a-11f and Figures 12a-12cAs shown, the positioning member 7 can comprise a base portion 7c, wherein no part of the positioning member (e.g. the first positioning portion 7d and / or the second positioning portion 7e) extends over the strip 13, 13’ of the third edge portion 1c and / or 1c’. For example, the positioning member 7 can preferably extend completely outside the horizontal outer side of the outer portion 13a, 13a’. The positioning member can not have an arm portion 7a.

[0094] In some embodiments, for example as Figure 4a , Figure 4b (the uppermost dashed line), Figures 5a-5b , Figure 6c , Figure 8b , Figure 9a , Figure 10a , Figure 11a and Figure 12a As shown, the connecting device 2 can further comprise an alignment element 8 configured to extend along the first edge portion 1a’’ of the third panel 1’’ in the locked states L1 and L2, see for example Figure 1c , Figure 3c , Figure 10e and Figure 11e . The alignment element 8 can be provided in the gap 15d between one section of the first edge portion 1a’’ and one section of the second edge portion 1b’’’, see for example Figure 3c . In the locked states L1 and L2, the alignment element 8 can preferably be arranged completely outside the horizontal outer side of the first edge portion 1a’’. Figure 11e In the embodiment shown, the alignment element 8 can extend at a non-perpendicular angle β (e.g. 60° or 120°) relative to the positioning member 7. Furthermore, the respective connection of the body portion 2a and the alignment element 8 to the positioning member 7 can be separated by an intermediate section 7h along the longitudinal extension length LP.

[0095] In the locked state L4, the alignment element 8 can be arranged in the locking groove 6’, preferably at least partially between the locking element 5’ and the inner surface 6b’ of the locking groove, see for example Figure 3c , Figure 10e and Figure 11e . In the locked states L1 and L2, the alignment element 8 (e.g. a wall 8a thereof) can be in engagement with the outer portion 3a’ (e.g. an outermost surface 3b’ thereof), see for example Figure 6c , or with an outer surface 5b’ of the locking element 5’, see for example Figure 8b of the present document and Figure 3cwhich document is explicitly incorporated herein by reference. Alternatively or additionally, in the locked state L4, the alignment element 8, e.g. a wall 8b thereof, can engage with the locking groove 6’, e.g. with the inner surface 6b’. The alignment element can be straight, e.g. comprising planar walls 8a, 8b.

[0096] In some embodiments, no part of the alignment element 8 extends above the strip 3’ of the first edge portion la, see e.g. Figure 3c , Figure 10f and Figure 11f . For example, the alignment element 8 can preferably extend completely outside the level of the outer portion 3a’, e.g. of the outermost surface 3b’. The alignment element 8 can not have a lug member 8c (defined below). It will be appreciated that the cross-section F-F in relation to the embodiments in Figures 9a-9d may be implemented in the form shown in e.g. Figure 3c , and reference can be made thereto.

[0097] It will be appreciated that Figure 11f - the cross-sections D-D and E-E in -11g are only schematic. In particular, Figure 11e and Figure 11f the second positioning portion 7e and the alignment element 8 in -11g should not occur along the cross-sections D-D and E-E, respectively.

[0098] Preferably, in the locked state L4, the width W (see Figure 4a and Figure 6c ) of the alignment element does not exceed the horizontal spacing S between the locking element 5’ and the locking groove 6’, preferably the inner surface 6b’ thereof, see Figure 3c and Figure 6c . For example, the width W can be determined by an upper portion 8e or a vertical central portion 8f of the alignment element. In the embodiments shown in e.g. Figures 3a-3d , the first edge portion la’’ can be substantially free to move relative to at least a portion, e.g. all, of the alignment element 8 during the angular tilt of the fourth edge portion ld’’ relative to the third edge portion lc. The above-mentioned relationship between the width W and the spacing S can be the same for some or preferably all of the first edge portions and the second edge portions in the floor panel assembly, e.g. for the edge portions la, lb’, for example. In a non-limiting example, 0.5 mm < W < 5.0 mm, e.g. 0.5 mm < W < 2.0 mm.

[0099] In some embodiments, as Figure 1c , Figures 5a-5d , Figures 6a-6c , Figures 8a-8b , Figure 10e , Figure 11e and Figures 12a-12cAs shown, the alignment element 8 can comprise a lug member 8c, for example a wing portion, which is configured to be arranged in the cavity 30' of the first edge portion 1a'' in the locked states L1 and L2 and optionally in L4. The preferably laterally open cavity 30' is arranged in the outer portion 3a' of the strip 3', and extends below the upper surface 5c' of the locking element 5', for example the uppermost surface, preferably below the plane P3 thereof. Thus, the lug member 8c, for example the bottom surface 8d thereof, can be at least partially or even completely disposed below the upper surface 5c'. The cavity 30' can be at least partially arranged laterally outside of the locking element 5', for example outside of the upper portion 5d' and / or the innermost portion 5e' of the locking element. For example, the cavity 30' can be completely arranged laterally outside of the locking element 5'. The cavity 30' can be disposed above the shelf portion 31' arranged in the outer portion 3a'. Preferably, the cavity 30' is open upwardly.

[0100] The cavity 30' can extend laterally inside of a vertical plane W3 disposed along the outermost surface 3b' of the outer portion 3a'. The cavity 30' and optionally the shelf portion 31' can extend along substantially the entire first edge portion 1a'', completely analogous to the cavity 30 in Figure 4g However, in some embodiments, the cavity 30' and optionally the shelf portion 31' can extend along a portion of the first edge portion 1a'', for example arranged in the corner portion 1e'' of the third panel 1'', completely analogous to the cavity 30 in Figure 4h However, in some embodiments, the cavity 30' and optionally the shelf portion 31' can extend along a portion of the first edge portion 1a'', for example arranged in the corner portion 1e'' of the third panel 1'', completely analogous to the cavity 30 in

[0101] The lug member 8c is disposed in the upper section 27, preferably extends horizontally from the upper portion 8e. In the locked states L1, L2, the lug member 8c can face the first edge portion 1a''. The lug member 8c, for example the bottom surface 8d, can engage with the shelf portion 31 ', for example with the upper surface portion 38 thereof.

[0102] In some embodiments, the alignment element 8 is flexible, such that it can be displaced horizontally outwardly and inwardly, for example at least along the first horizontal direction X (see arrows A1, A2), when the fourth edge portion 1d'' is assembled to the third edge portion 1c. This horizontal displacement can result from a pivotal rotation of the alignment element 8. For example, the flexibility can be provided by a flexible material of the alignment element 8. Figures 6a-6c The non-limiting embodiment of Fig. 6 shows the assembly of the third panel 1'' and the first panel 1 as shown in Fig. 5 when assembled to the fifth panel 1''' arranged on the floor 20, see Fig. 6. Figures 5c-5d The non-limiting embodiment of Fig. 6 shows the assembly of the third panel 1'' and the first panel 1 as shown in Fig. 5 when assembled to the fifth panel 1''' arranged on the floor 20, see Fig. 6. Figure 2cFor example, when assembling (e.g. angularly tilting) the third panel 1’’ onto the first panel 1 (see arrow AG), by the cooperation between the actuation member 1i of the third panel 1’’ and the lug member 8c, an outward displacement can be induced, see arrow A1. The actuation member 1i can be arranged in the back face 1h of the third panel 1’’ and / or in the outer portion 3a’, for example extending between the back face 1h and the outer portion 3a’. The actuation member 1i can comprise a surface (preferably planar) which is inclined with respect to the back face 1h, which for example forms an angle Φ of 5°-45° (e.g. 10°-30°). Figures 5c-5d and Figures 6a-6c . The actuation member 1i can be arranged in the back face 1h of the third panel 1’’ and / or in the outer portion 3a’, for example extending between the back face 1h and the outer portion 3a’. The actuation member 1i can comprise a surface (preferably planar) which is inclined with respect to the back face 1h, which for example forms an angle Φ of 5°-45° (e.g. 10°-30°).

[0103] The alignment element 8 can be displaced horizontally outwardly away from the third panel 1’’ (see arrow A1). Thereby, the third panel 1’’ can be displaced vertically past the lug member 8c. Subsequently, when the third panel 1’’ is further displaced vertically downwardly, the alignment element 8 can be displaced inwardly (see arrow A2) such that the lug member 8c can be in its position where it is arranged in the cavity 30’, see for example Figure 1c and Figure 6c .

[0104] In embodiments of the type of Figures 5a-5d , the lug member 8c is preferably arranged in a distal portion 8g of the alignment element 8. For example, the lug member 8c can extend along a portion of the alignment element, for example along less than half (preferably less than a third) of the longitudinal extension length LE of the alignment element. Thus, the alignment element can require a smaller outward displacement A1 to allow the third panel 1’’ to be vertically displaced past the lug member 8c.

[0105] Figure 6c (and Figure 2c ) shows a locking state L5 of the first edge portion 1a’’’’ of the fifth panel 1’’’’ and the second edge portion 1b’’ of the third panel 1’’ which can be similar to the locking states L4 and / or L1.

[0106] In some embodiments, as shown in Figures 8a-8b , the connecting device 2 can comprise one lug member 8c which is configured to extend at least partially over the locking element 5’ in the locking states L1 and L2 and optionally L4. Other features of the connecting device 2 (e.g. its lug member 8c) can be the same as described above with respect to for example Figure 1c , Figures 5a-5d and Figures 6a-6c , and thus can be referred to.

[0107] It is noted that the alignment element 8 of the embodiments in Figures 4e-4h may be realized for example Figure 3c ,Figures 4a-4b and Figure 7 either Figure 1c , Figures 5a-5b and Figure 6c The form shown.

[0108] Preferably, the protrusion 2b extends longitudinally along the entire body portion 2a for a length LB. Figures 10a-10c , Figure 11a and Figures 12a-12c In embodiments of this type, the lug member 8c preferably extends along substantially the entire longitudinal length LE of the alignment element 8 via a smooth connection with the protrusion 2b. Figure 11a As shown, and in Figure 11e As most clearly shown, the lower section 27' of the connecting device 2 may include a flange portion 2g extending from the main body portion 2a, and / or a flange portion 8h extending from the alignment element 8. Each flange portion 2g, 8h may be implemented in a form similar to the lug member 8c until the upper section 27 and the lower section 27' are interchanged (see also below). Furthermore, the flange portion 2g (or 8h) may be configured to be arranged in a recess 42 (or 42') of the second edge portion 1b' (or 1b''') in the locked state L1 (or L4). Preferably, the recess 42 (or 42') is provided in the back surface 1h of the second edge portion 1b' (or 1b''') and opens toward the locking groove 6 (or 6').

[0109] In fact, in some embodiments, the connecting device 2 can be configured for use with Figure 11b Both the first and second type of connectors (see areas H and J). The upper section 27 and the lower section 27' can be interchanged by rotating the connecting device 2. In fact, the roles of the flange portions 2g and 8h on one hand and the protrusions 2b and lug members 8c on the other hand can be interchanged by the following process: first, rotating the connecting device 2 180° about the longitudinal extension length LP (see arrow R1), and then rotating the connecting device 2 180° about the vertical axis Q (see arrow R2). Thus, the protrusions 2b and lug members 8c used in the first type of connector (see area J) can be realized by the flange portions 2g and 8h in the second type of connector (see area H), and vice versa. Furthermore, the roles of the first positioning portion 7d and the second positioning portion 7e can be interchanged. Moreover, the non-perpendicular angles α and β can be changed from 120° to 60°, or vice versa.

[0110] therefore, Figure 11c The locking states L1, L2, L3, and L4 in the second type of connector shown can be similar to Figures 11d-11f This is achieved through the locking state in the first type of connector shown.

[0111] The distance Z1 from the back side 1h of the first panel 1 to the cavity 30, e.g. to the upper surface portion 36, can be predetermined. Further, the distance Z2 and / or Z3 from the back side 1h of the first panel 1 and / or the second panel 1’ to the cavity 32 and / or 32’, e.g. to the upper surface portion 37 and / or 37’, can be predetermined. In a first preferred example, Z2 and / or Z3 are substantially the same as Z1. However, in a second example, Z2 and / or Z3 can be different from Z1.

[0112] Optionally, the distance Z4 from the back side 1h of the third panel 1’’ to the cavity 30’, e.g. to the upper surface portion 38, can be predetermined. For example, Z4 can be substantially the same as Z1.

[0113] Any of the ratios Z1 / T, Z2 / T, Z3 / T, Z4 / T, e.g. all ratios, can be between 0.05 and 0.30, preferably 0.1-0.25. In a non-limiting example, at least one, e.g. all, of Z1, Z2, Z3, Z4 can be 1.0-5.0 mm, e.g. 1.3-2.5 mm.

[0114] Here in general, any or each cavity 30, 30’, 32, 32’ can be laterally open, preferably such that at least a portion of the cavity faces a direction outwardly from the first edge portion 1a, 1a’’ or the third edge portion 1c, 1c’ (e.g. the direction is parallel to the first horizontal direction X or the second horizontal direction Y). For example, any or each cavity 30, 30’, 32, 32’ can be arranged at least partially, e.g. completely, outside a horizontal plane of the upper surface 5c, 5c’, 9c, 9c’ of the locking element 5, 5’, 9, 9’. Further, the plane P1, P2, P3, P4 under which any or each cavity 30, 32, 30’, 32’ can extend can be parallel to a horizontal plane HP extending along the front side 1g.

[0115] For example, the panels of a first floor panel assembly can have different locking devices than the panels of a second floor panel assembly, while the first and second assemblies preferably have the same panel thickness T, and the respective predetermined distances Z1, Z2, Z3 and optionally Z4 are the same. In another example, the panels of a first floor panel assembly and the panels of a second floor panel assembly can have different panel thicknesses T, but the respective predetermined distances Z1, Z2, Z3 and optionally Z4 are the same.

[0116] Herein generally, the vertical distance VI from the back side 1h of the panel 1, 1' to the upper surface 9c, 9c' can be the same as the vertical distance V2 from the back side 1h of the panel 1, 1" to the upper surface 5c, 5c'. However, in some embodiments, the locking elements 9, 9' of the third edge portion 1c, 1c', 1c", 1c'" can extend vertically above (or below) the locking elements 5, 5' of the first edge portion 1a, 1a', 1a", 1a'". In this case, VI > V2 (or V2 > VI). Such embodiments are described in WO 2023 / 146452 A1 on page 15, line 32 to page 16, line 14, and in Figure 7 c-7d, the content of which is explicitly incorporated herein by reference. However, since the connection device 2 herein can engage with one or more of the shelf portions 31, 33, 33', 31' in the locked state LI, L2, L3, L4, the connection device herein and its mating panel portion (e.g. shelf portion) can largely be formed and function independently of the distances VI, V2. In any of these embodiments, the connection device can be provided in a joint with improved humidity control, see WO 2021 / 058572 A1, the content of which (especially page 8, lines 15-32, page 12, lines 12-30, Figures 4a-4b and Figure 7 -8) are explicitly incorporated herein by reference.

[0117] The connection device 2 in any of the embodiments herein can comprise a sealing member 22, e.g. a sealant or a coating. The sealing member 22 can comprise wax, a water repellent or rubber (e.g. latex) or the like. For example, the sealing member 22 can be sprayed or brushed on the envelope surface 2f of the connection device.

[0118] As Figure 7 illustrated, in some embodiments, the body portion 2a and / or the alignment element 8 can comprise a positioning protrusion 25, 25', configured to cooperate with at least one of the first panel 1, the second panel 1', the third panel 1" and the fourth panel 1'". See also e.g. WO 2023 / 146452 A1 on page 16, line 22 to page 17, line 31 and Figure 10a -10h, the content of which is explicitly incorporated herein by reference. Alternatively or additionally, the positioning member 7 can comprise a positioning protrusion 26, 26', configured to cooperate with at least one of the first panel 1, the second panel 1', the third panel 1" and the fourth panel 1'".

[0119] The floor panel assembly can comprise a plurality of connection devices 2. In a first example, as Figure 2b illustrated, the connection devices 2 can preferably only be provided at the outermost joints 16. In a second example, as Figure 2cAs shown, one connecting device 2 can be provided at each (or substantially each) internal joint 16 of the floor panel assembly.

[0120] The panels 1, 1’, 1”, 1”’ in the floor panel assembly can comprise a decorative joint portion 17a, 17b along at least one (preferably all) of its edge portions, see e.g. Figure 1c and Figures 2a-2c Non-limiting embodiments of such decorative joint portions 17a, 17b are described on page 18, line 15 to page 21, line 15 of WO 03 / 078761, and are shown in Figure 4b , Figure 5c , Figures 6a-6c and Figure 7 a-7c, the contents of which are incorporated herein by reference.

[0121] The above mainly describes several aspects of the present disclosure in connection with several embodiments. However, it should be readily understood by those skilled in the art that other embodiments are feasible within the scope of the present disclosure in addition to the above disclosed embodiments. For example, the embodiments of the floor panel assembly comprising floor panels described herein are equally applicable to a corresponding wall panel assembly comprising wall panels. Furthermore, as mentioned above, the cavities 32, 32’ are evidently optional in some embodiments, e.g. in Figure 10f Finally, it should be understood by those skilled in the art that the above embodiments and examples of the predetermined distances Z1, Z2, Z3, Z4 can be applicable to any or even all of the panels 1, 1’, 1”, 1”’, 1”” in the floor panel assembly.

Claims

1. A floor panel assembly comprising a first panel (1) and a second panel (1’), wherein a first edge portion (1a) of the first panel (1) comprises a strip (3) extending horizontally beyond an upper portion (4a) of the first edge portion (1a), the strip (3) comprising an upwardly extending locking element (5), an outer portion (3a) of the strip (3) comprises a laterally open cavity (30) extending below a plane (PI) of an upper surface (5c) of the locking element (5), and wherein a second edge portion (1b’) of the second panel (1’) comprises a downwardly open locking groove (6) configured to cooperate with the locking element (5) to horizontally lock the first edge portion (1a) and the second edge portion (1b’) to each other, the floor panel assembly further comprises a connecting device (2) configured to be at least partially arranged in the locking groove (6) in a locked state (LI) of the first edge portion (1a) and the second edge portion (1b’), an upper section (27) of the connecting device (2) comprises a protrusion (2b) extending from a main body portion (2a), wherein the protrusion (2b) is configured to be arranged in the cavity (30) in the locked state (LI), and wherein the connecting device (2) comprises a positioning member (7) configured to extend along a third edge portion (1c) of the first panel (1) in the locked state (LI), the first edge portion (1a) and the third edge portion (1c) engaging each other at a corner portion (1e) of the first panel (1).

2. The floor panel assembly according to claim 1, wherein The cavity (30) is located above a shelf portion (31) arranged in the outer portion (3a) of the strip (3), the cavity (30) being open upwardly.

3. The floor panel assembly according to claim 1 or 2, wherein The cavity (30) is at least partially arranged horizontally outside the locking element (5).

4. The floor panel assembly according to any of the preceding claims, wherein, The cavity (30) and optionally the shelf portion (31) extend along the entire first edge portion (1a).

5. The floor panel assembly according to any of the preceding claims, further comprising a third panel (1”), wherein, In a locked state (L2) of the third edge portion (1c) of the first panel (1) and a fourth edge portion (1d”) of the third panel (1”), the positioning member (7) is provided in a gap (15b) between one section of the third edge portion (1c) and one section of the fourth edge portion (1d”) of the third panel (1”).

6. The floor panel assembly according to any of the preceding claims, wherein, The positioning member (7) is further configured to extend along a third edge portion (1c’) of the second panel (1’) in the locked state (LI), the second edge portion (1b’) and the third edge portion (1c’) engaging each other at a corner portion (1e’) of the second panel (1’).

7. The floor panel assembly according to any of the preceding claims, wherein, The positioning member (7) comprises an arm portion (7a) configured to be arranged in a cavity (32) in a locked state (LI), wherein the cavity (32) is arranged in an outer portion (13a) of a strip (13) of a third edge portion (1c) of the first panel (1), the cavity (32) extending below an upper surface (9c) of a locking element (9) arranged in the strip (13).

8. The floor panel assembly according to any of the preceding claims, wherein, The positioning member (7) comprises a tapered end portion (39).

9. The floor panel assembly according to any of the preceding claims, wherein, The main body portion (2a) of the connecting device (2) is configured to be arranged in the locking groove (6) in a locked state (LI) and located horizontally outside the locking element (5).

10. The floor panel assembly according to any of the preceding claims, further comprising a third panel (1”), wherein, The connecting device (2) further comprises an alignment element (8) configured to extend along a first edge portion (1a”) of the third panel (1”) of the floor panel assembly in a locked state (LI) of the first edge portion (1a) and the second edge portion (1b’) and in a locked state (L2) of the third edge portion (1c) of the first panel (1) and the fourth edge portion (1d”) of the third panel (1”).

11. The floor panel assembly according to claim 10, wherein The alignment element (8) is arranged horizontally outside the first edge portion (1a”) of the third panel (1”) in a locked state (LI) of the first edge portion (1a) and the second edge portion (1b’) and in a locked state (L2) of the third edge portion (1c) and the fourth edge portion (1d”).

12. The floor panel assembly according to claim 10, wherein, The alignment element (8) comprises a lug member (8c) configured to be arranged in a cavity (30’) of the first edge portion (1a”) of the third panel (1”) in a locked state (LI) of the first edge portion (1a) and the second edge portion (1b’) and in a locked state (L2) of the third edge portion (1c) and the fourth edge portion (1d”), wherein the cavity (30’) is arranged in an outer portion (3a’) of a strip (3’) of the first edge portion (1a”) of the third panel (1”), the cavity (30’) extending below an upper surface (5c’) of a locking element (5’) arranged in the strip (3’).

13. The floor panel assembly according to claim 12, wherein The alignment element (8) is flexible such that it can be displaced horizontally outwards during assembly of the fourth edge portion (1d”) of the third panel (1”) onto the third edge portion (1c) of the first panel (1).

14. The floor panel assembly according to claim 13, wherein The displacement outwards is caused by a cooperation between an actuating member (1i) of the third panel (1”) and the lug member (8c).

15. The floor panel assembly according to any of the preceding claims, wherein, The horizontal locking of the locking groove (6) and the locking element (5) is independent of the connecting device (2).

16. The floor panel assembly according to any one of the preceding claims, further comprising a tongue (11) and a tongue groove (12) for vertically locking the first edge portion (1a) and the second edge portion (1b’).

17. The floor panel assembly according to any of the preceding claims, wherein, The connection device (2) comprises a polymer-based material, such as a thermoplastic material.

18. The floor panel assembly according to any of the preceding claims, wherein, The first edge portion (1a) and the second edge portion (1b’) are configured to be mutually assembled together by a relative substantially vertical displacement of the first panel (1) and the second panel (1’) against each other, and / or wherein the third edge portion (1c) of the first panel (1) and the fourth edge portion (1d”) of the third panel (1”) are configured to be mutually assembled together by an angular inclination of the third panel (1”) and the first panel (1) relative to each other.

19. The floor panel assembly according to any of the preceding claims 1 - 17, wherein, The first edge portion (1a) and the second edge portion (1b’) are configured to be mutually assembled together by an angular inclination of the first panel (1) and the second panel (1’) relative to each other, and / or wherein the third edge portion (1c) of the first panel (1) and the fourth edge portion (1d”) of the third panel (1”) are configured to be mutually assembled together by a relative substantially vertical displacement of the third panel (1”) and the first panel (1) against each other.

20. The floor panel assembly according to any of the preceding claims, further comprising a third panel (1'') and a fourth panel (1'''), wherein, The four panels (1; 1’; 1’’; 1’’’) are configured to be mutually assembled together so that a four-way junction is formed at the corner portions (1e; 1e’; 1e’’; 1e’’’) of the four panels.

21. The floor panel assembly according to any of the preceding claims, wherein, The body portion (2a) and / or the alignment element (8) of the connection device (2) are arranged at a non-perpendicular angle (a; b) relative to the positioning member (7), such as 60° or 120°.

22. A floor panel assembly comprising a first panel (1) and a second panel (1’), wherein The first edge portion (1a) of the first panel (1) comprises a strip (3) extending horizontally beyond an upper portion (4a) of the first edge portion (1a), the strip (3) comprising a locking element (5) extending upwards, and wherein the second edge portion (1b’) of the second panel (1’) comprises a downwardly open locking groove (6) configured to cooperate with the locking element (5) for horizontally locking the first edge portion (1a) and the second edge portion (1b’) to each other, The floor panel assembly further comprises a connection device (2) configured to be at least partially arranged in the locking groove (6) in a locked state (L1) of the first edge portion (1a) and the second edge portion (1b’), wherein the connection device (2) preferably comprises a positioning member (7) configured to extend along a third edge portion (1c) of the first panel (1) in the locked state (L1), the first edge portion (1a) and the third edge portion (1c) being mutually engaged at a corner portion (1e) of the first panel (1), and wherein the connection device (2) is configured to be arranged in the locking groove (6) in the locked state (L1) of the first edge portion (1a) and the second edge portion (1b’), and wherein the connecting device (2) comprises an alignment element (8) configured to extend along a first edge portion (la) of the third panel (1") in a locked state (L1) of the first edge portion (la) and a second edge portion (lb') of the first panel (1) and in a locked state (L2) of a third edge portion (lc) of the first panel (1) and a fourth edge portion (Id") of a third panel (1"), wherein the alignment element (8) is configured to be displaced horizontally outward during assembly of the fourth edge portion (Id") of the third panel (1") onto the third edge portion (lc) of the first panel (1), the outward displacement being caused by a cooperation between an actuation member (li) of the third panel (1") and a lug member (8c) of the alignment element (8).

23. A connecting device (2) comprising: a body portion (2a) and a positioning member (7) connected to the body portion (2a), a longitudinal extension length (LP) of the positioning member (7) being arranged substantially perpendicular to a longitudinal extension length (LB) of the body portion (2a), wherein the longitudinal extension length (LP) of the positioning member (7) spans two sides (2c, 2d) of the body portion, wherein the body portion (2a) comprises a protrusion (2b) extending from the body portion, wherein the positioning member (7) comprises an arm portion (7a) extending from a base portion (7c) of the positioning member, and wherein the connecting device further comprises an alignment element (8) extending from the body portion (2a), the alignment element (8) extending substantially parallel to the longitudinal extension length (LB) of the body portion (2a), the alignment element being outwardly flexible over the longitudinal extension length (LP) of the positioning member (7), and the alignment element comprising a lug member (8c). ​

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