WO2022058487A1

WO2022058487A1 - Panel

Info

Publication number: WO2022058487A1
Application number: PCT/EP2021/075600
Authority: WO
Inventors: Hans-Jürgen HANNIG; Egon Hoff; Carsten Buhlmann; Andreas SIEDER; Eberhard Herrmann
Original assignee: Surface Technologies Gmbh & Co. Kg
Priority date: 2020-09-17
Filing date: 2021-09-17
Publication date: 2022-03-24
Also published as: EP3971366A1; US20230349163A1; CN114521218A

Abstract

The invention relates to a panel (1, 2, 3, 4) with a second edge pair which is provided with complementary hook profiles on the opposing panel edges thereof, namely a receiving hook (10, 56, 62, 69, 74) and a locking hook (11, 57, 63, 68, 75). The locking hook (11, 57, 63, 68, 75) can be joined with the receiving hook (10, 56, 62, 69, 74) by carrying out a joining movement on a plane perpendicular to the panel plane while simultaneously pivoting the first edge pair with the proviso that the receiving hook (10, 56, 62) is provided with a holding groove (12, 58, 64) or the locking hook (68, 75) is provided with a holding groove (71, 77) for a separate locking element (70, 76) with which a vertical lock can be achieved. An abutting surface (10a) and a counter abutting surface (11d) are provided at least on the second edge pair with the proviso that the abutting surface (10a) is arranged on the receiving hook (10, 56, 62, 69, 74) and the counter abutting surface (11d) is arranged on the locking hook (11), and both are substantially orthogonal relative to the panel upper face (7), wherein the counter abutting surface (11d) of the locking hook (11, 57, 63, 68, 75) or the abutting surface (10a) of the receiving hook is provided with at least one seal nipple (G2); the abutting surface (10a) of the receiving hook (10, 56, 62, 69, 74) or the counter abutting surface (11d) of the locking hook (11, 57, 63, 68, 75) is provided with at least one seal groove (W2), which fits the seal nipple (G2) in a form-fitting manner, on the panel edge (M); and the seal nipple (G2) and the seal groove (W2) are each arranged parallel to the panel edge (M, U) in question and extend over the entire length of the abutting surface (10a) or the counter abutting surface (11d).

Description

panel

The invention relates to a panel with a panel core, a top side of a panel, a bottom side of a panel and a first pair of edges and a second pair of edges, the first pair of edges being provided with a groove profile on one panel edge and a tongue profile complementary thereto on the opposite panel edge, which a pivoting movement can be locked and then interact in a form-fitting manner in such a way that a vertical locking effect can be achieved in the locked state and a moving apart of locked panels in the plane of the panels (horizontally) is counteracted, the second pair of edges being provided with complementary hook profiles on their opposite panel edges, namely a receiving hook and a locking hook, the locking hook being joined together by a joining movement in a plane perpendicular to the panel plane at the same time by means of the pivoting movement for the first pair of edges with the receiving hook, with the Provided that the receiving hook is provided with a retaining groove for a separate locking element, with which a vertical locking effect can be achieved, with at least one abutment surface and a counter-abutment surface being provided on the second pair of edges, with the proviso that the

Impact surface on the receiving hook and the counter-impact surface the locking hook is arranged and both are arranged relative to the panel top substantially orthogonally.

A generic panel is known from EP 1 415 056 B1. It is a panel that includes a first pair of edges with a tongue and groove profile and a second pair of edges with hook profiles. As a result, the known panel can be locked by means of a pivoting movement at an edge with a tongue profile with the groove profile of the panels of a previous row of panels; It is seen as a great advantage that one of the edges with a hooked profile is also locked at the same time by means of the pivoting movement mentioned. The separate blocking element snaps into place by itself. The latching function of the blocking element is automatically triggered by the aforementioned pivoting movement on the first pair of edges of the panel.

This type of laying is also referred to as fold-down laying or the appropriate panel as fold-down panel.

Such panels are connected to one another in rows, resulting in transverse joints between the panels within a row of panels. In addition, longitudinal joints are formed between the rows of panels of a covering surface formed in this way as a composite. It is desirable that the longitudinal and transverse joints of such a covering surface should have a certain tightness against water running through. Unfortunately, in practice it turned out that water can penetrate into joints and in places run through the joint from the top of the panel to the bottom of the panel. Water penetrating or passing through in this way can lead to the formation of mould, which can spread hidden under a floor covering surface. It has been shown that moisture can penetrate or penetrate in particular via the transverse edge and the crossing points of the transverse and longitudinal edges. can go through .

The invention is based on the object of proposing a panel which has an improved design, at least of the profiles of the second pair of edges, in order to better counteract the passage of water at the joints.

According to the invention, the object is achieved in that the abutment surface of the locking hook or the abutment surface of the receiving hook is provided with at least one sealing nipple, that the abutting surface of the receiving hook or the counter-abutment surface of the locking hook is provided with at least one sealing groove on the panel edge that fits the sealing nipple in a form-fitting manner and that the sealing nipple and the sealing groove are each arranged parallel to the relevant panel edge and extend over the entire length of the abutting surface or counter-abutting surface.

The proposed panel is provided with a sealing measure that is physically provided in each case in the area of the joints. The combination of sealing nipple and sealing groove provided on the second pair of edges effectively counteracts the ingress or passage of water.

The proposed panel has a square basic shape. The tongue profile of the first pair of edges meets the hook of the second pair of edges at one of the four corners of the panel. These two different shapes of the panel edges overlap in this corner, creating an intersection zone of the different profile shapes, in which a complex three-dimensional shape results. The complex shape is due to the fact that the receiving hook must have the retaining groove for the blocking element and this retaining groove therefore meets at the corner with the tongue profile of the adjacent panel edge of this corner. To produce the retaining groove, material from the panel core must be removed, for example milled. The milling of the retaining groove runs through the tongue profile at one end (transition zone) and cuts part of the panel core that formed the tongue. A part of the material of the spring profile is thus machined and removed. On the upper side of the feather there is a gap in this transition zone through which no water is allowed to penetrate. For this reason, the proposed design pursues the technical path of specifying suitable measures above the top of the spring that effectively counteract the penetration of water down to the level of the top of the spring. It has been shown that a better tightness against water running through can be achieved in this way.

The cross section of the retaining groove for the separate blocking element can simply be retained and a known blocking element can be used. Suitable blocking elements are known, for example, from EP 1 415 056 B1, WO 2011/087425 A1, US Pat. No. 9,347,469 B2 or US Pat. No. 7,866,110 B2. Reference is hereby made to the design examples for separate blocking elements and their arrangement on a panel, as defined in the aforementioned publications, and this technical teaching is included. The separate locking element for the complementary hook profiles can optionally be provided as part of the panel. The blocking element is preferably preassembled in the retaining groove of the receiving hook.

Advantageously, the carrier plate on which a panel according to the invention is based comprises a fiber material, such as for example a high-density fiber material (HDF) or a medium-density fiber material (MDF), a coarse chipboard material (OSB) or a wood-plastic composite material (WPG). Provision can also be made for the panel to have a decoration, with this decoration being formed either by applying a decorative layer that has already been printed onto a carrier plate or by directly printing the carrier plate with such a decoration. In the present case, direct printing is also to be understood as meaning printing on a printing substrate that has previously been applied to a carrier plate. It can also be provided that the panel consists of a solid wood material or is formed entirely from a wood material. Such a fiber material can advantageously absorb water or liquid in the event of contact with moisture, which leads to swelling. Such a source leads to an improved sealing connection in the area of the sealing nipple or the abutment surface and the counter-abutment surface. In a further embodiment of the invention, the carrier plate on which a panel according to the invention is based comprises a plastic material such as, for example, a polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), an acrylonitrile-butadiene-styrene copolymer (ABS), a polyvinyl chloride (PVC), a polycarbonate (PC), a polyamide (PA), a polyetherketone (PEK), polyetheretherketone (PEEK), mixtures or copolymers of these, or a plastic composite material made of one or more of these plastics with a Fiber and / or mineral filler.

The complementary hook profiles of the second pair of edges, namely the receiving hook, which is open at the top, and the locking hook, which is open at the bottom, advantageously have holding surfaces provided on both sides in one piece on the panel core, by means of which the locking effect against the panels moving apart within the panel plane away from one another in a direction perpendicular to the locked panel edges can be achieved. The locking effect in the vertical direction perpendicular to the top side of the panel is particularly user-friendly and easily achievable by means of the separate locking element.

At least one of the pairs of edges expediently has an edge break on its two complementary panel edges, which forms a deepened joint when two of these panels are joined together.

The edge breaks of at least one of the edge pairs on its complementary panel edges are preferably of different sizes, so that in the assembled state the larger edge break is covered by the smaller edge break.

Furthermore, an improvement in the tightness can be achieved by providing a projection on the panel edge with the smaller edge refraction, on the upper side of which at least part of the smaller edge refraction extends, and that on an underside of the projection an undercut counter surface for the covered part of the larger edge breaking is provided.

The smaller chamfer of the first pair of edges is expediently arranged on the groove profile and the larger chamfer on the tongue profile, and that the smaller chamfer of the second pair of edges is disposed on the locking hook and the larger chamfer on the receiving hook.

It is also advantageous if the counter-attack surface is on the first pair of edges and/or on the second pair of edges is inclined relative to the orthogonal on the top side of the panel by an angle in the range of 1°-5°, with the cross section of the locking hook being oversized in the inclined area of the counter-abutment surface and/or the cross-section of the groove profile being oversized in the inclined area of the counter-abutment surface, so that in the locked state, a pressure can be brought about between the counter-abutment surfaces and the abutment surfaces. The term "oversize" refers to the ratio of the two joinable panel edges. Based on a theoretical nominal size of both panel edges, "oversize" means that there is more material based on the nominal size either at the butt surface and/or at the counter butt surface, so that the surface of the abutment surface and/or the surface of the counter-abutment surface protrudes further distally than the nominal dimension. In practice, this can be a hundredth to a few tenths of a millimeter maximum oversize, which in practice causes the desired pressure between the abutting surface and the counter-abutting surface of the joined panel edges. This desired pressure expediently takes place in the upper region of the abutment surface and the counter-abutment surface and can extend, for example, over half the height of the abutment surface or counter-abutment surface.

An advantageous development provides that the pressure between the counter-abutment surface and the abutment surface is greater at the upper end of the abutment surface and decreases toward the lower end of the abutment surface.

An alternative provides that the retaining groove for the separate blocking element has parallel groove walls, the groove walls being at a constant distance from one another.

It is also helpful if the retaining groove or the

Groove walls of the retaining groove inclined relative to the top of the panel are arranged. Furthermore, it is useful if the free opening of the inclined retaining groove is directed upwards, d. H . towards the top of the panel. For a closed joint, it is useful if the separate blocking element has a snap-in means with which it can be automatically snapped into a snap-in recess in the complementary panel edge.

The invention is illustrated below by way of example in a drawing and is described in detail with reference to several exemplary embodiments. Show it :

Fig. 1 a schematic representation of several panels according to the invention in combination,

Fig. 2 an example of a cross section through a first pair of edges of a panel according to the invention in the locked state,

Fig. 3 shows a cross section through the second pair of edges of the panel according to the invention in the locked state,

Fig. 4 shows a perspective view of two panel pieces with the panel edges according to FIG. 2 in the locked state and with the spring profile according to FIG. 1 ,

Fig. 5 a perspective representation of two panel pieces in the locked state with an alternative separate locking element,

Fig. 6 an alternative cross section through a first pair of edges of a panel according to the invention in the locked state, Fig. 7 shows an alternative cross-section through the second pair of edges of the panel according to the invention in the locked state,

Fig. 8 another example of a cross section through a second pair of edges of the panel according to the invention in the locked state,

Fig. 9 another example of a cross section through the second pair of edges of the panel according to the invention in the locked state,

Fig. 10 a further alternative of a cross section through the second pair of edges of the panel according to the invention in the locked state,

Fig. 11 shows a final example of a cross section through the second pair of edges of the panel according to the invention in the locked state.

In Fig. 1 four identical panels 1 , 2 , 3 and 4 according to the invention are shown schematically in sections and are joined together to form a covering surface. The pavement surface can be used for a building wall, ceiling or floor. Each of the panels according to the invention has four panel edges F, M, N and U and four corners Kl, K2, K3 and K4. As can be seen in the following figures, the panel has a panel top 7 , a panel bottom 8 and a panel core 9 . The panel has two pairs of edges. A first pair of edges is shown in FIG. 2 and comprises the panel edges N and F, the panel edge N having a groove profile 5 and the panel edge F having a tongue profile 6 . A second pair of edges is shown in FIG. 3 and comprises the panel edges M and U, which are designed as hook profiles. The panel edge M is designed as a receiving hook 10 and the panel edge U as a locking hook 11 . The receiving hook 10 is provided with a holding groove 12 for a separate locking element 13 . The locking member 13 is mounted and used so that it locks in the vertical direction (vertical locking member). The locking hook 11 can be connected to the receiving hook 10 by means of a joining movement in a vertical plane downwards. If a vertical locking element 13 is used, the vertically acting locking happens automatically, as shown below with reference to FIG. 3 is described in detail. Due to the two different pairs of edges, the proposed panel is suitable for locking by pivoting (fold-down). The pivoting movement is shown in FIG. 1 on the basis of the panel 4 which is shown in dashed lines in an inclined starting position 4 ′. The panel 4 is moved down from its initial position 4 ′ in the direction of the pivoting arrow S by a single downward pivoting movement about its panel edge F as the axis of rotation. It locks with the groove profile 5 of the panels 1 and 2 of a previous row of panels PI. Simultaneously, panel edge U of panel 4 is interlocked with panel edge M of panel 3, which is in the same panel row P2.

According to Fig. 1 meets at a corner Kl of the panel 4 the panel edge F (first pair of edges) with the panel edge U (second pair of edges). This corner K1 turns out to be particularly critical for the tightness of the covering surface against water running through. At the critical corner Kl, the tongue profile 6 of the panel edge F meets the locking hook 11 of the panel edge U. The cross sections of the spring profile 6 and the locking hook

11 spatially overlap and a complex spatial shape emerges at the corner of Kl.

In combination with other identical panels 1 and 3, the relevant corner K1 of panel 4 is located in an area marked IV. A T-joint forms there, which is made up of a longitudinal joint (panel edges F/N) and a transverse joint (panel edges M/U). A view of this T-joint in the direction of arrow IV is shown below with reference to FIG. 4 explained in detail.

Based on Fig. 2 a first pair of edges of the panel according to the invention is shown in cross section as an example. The viewing direction corresponds to that in FIG. 1 marked cutting line II - II . The panel edges F and N of the panels 1 and 4 are in Fig. 2 so opposite, as in Fig. 1 indicated by the section line II-II. The panel edge F is designed with a tongue profile and the panel edge N with a complementary groove profile. These complementary panel edges can be fragmentary shown in an interlocked condition, as if the panel had been split open in two. This form of representation is intended to facilitate understanding of the functionality and interaction of the complementary panel edges. A starting position 4' of the panel edge F indicates a pivoting movement S. Of course, several panels of the type according to the invention can be locked together in the same way in order to obtain a covering surface for a building wall, floor or ceiling. For this reason, FIGS. 2 and 3 can each be interpreted as two panels, which are shown in sections. The panel edge M designed as a receiving hook 10 and the panel edge U designed as a locking hook 11 of the second pair of edges are shown in FIG. 3 shown in cross section, also in the assembled locked state. The viewing direction corresponds to that in FIG. 1 drawn cutting line III - III.

On the second pair of edges, the locking hook 11 of the panel edge M on the top side 7 of the panel has an edge break in the form of a larger bevel 36 and the receiving hook 10 of the panel edge U is provided with a smaller bevel 37 .

The smaller chamfer 37 extends over a distal projection 38 which is arranged distally on the locking hook 11 . An underside of the projection forms a counter surface 39 which, in the locked state, covers a part of the larger chamfer 36 and is in contact with this part, so that a first seal against ingress of water is created. The two bevels form a V-joint 40 when locked.

The receiving hook 10 and the locking hook 11 lock the assembled panel edges M/U in the vertical and also in the horizontal direction. For the vertical locking effect, in this exemplary embodiment, a separate locking element 13 (vertical locking element) can be inserted into the retaining groove 12 of the receiving hook 10 provided for this purpose. A locking recess 11a is provided on the locking hook, into which the blocking element 13 can snap. The latching recess has a sloping lower groove wall 11b and a sloping upper groove wall 11c.

The retaining groove 12 provided in the receiving hook 10 for the

Locking element 13 is provided with a flat lower groove wall 12a, an upper groove wall 12b and a groove base 12c.

The upper groove wall 12b has a step 12d which is arranged in such a way that there is a narrower part of the retaining groove 12 facing the groove base 12c and a region with a larger width which is directed towards the open side of the retaining groove 12 .

The design of the retaining groove 12 with the step 12d is adapted to the known blocking element 13, the cross section of which is shown in FIG. 3 is shown as an example. In the illustrated hatched blocking element 13 , a latching means 13a is formed in the form of a latching tab 13b protruding obliquely downwards, which protrudes from the retaining groove 12 . In addition, the blocking element 13 comprises a retaining means 13c, which faces the groove base 12c of the retaining groove 12, and a shoulder 13d, on which the step 12d of the upper groove wall is supported. Suitable blocking elements are known, for example, from the following publications: EP 1 415 056 B1, WO 2011/087425 A1 and US 2014/0366476 A1.

For the hori zontal locking effect is shown in FIG. 3 the receiving hook 10 of the panel edge M is provided distally with a hook edge 41 which protrudes in the direction of the top side 7 of the panel and with a receiving recess 42 which is open to the top side 7 of the panel. The locking hook 11 of the panel edge U has a locking shoulder 43 protruding in the direction of the underside 8 of the panel and a locking recess 44 that is open at the bottom. The locking shoulder 43 fits into the receiving recess 42 of the receiving hook 10 and cooperates with it.

The receiving hook 10 has a holding surface 45 on the hook edge 41 which is directed towards the panel core 9 . Likewise, a holding surface 46 is provided on the locking hook 11, which is also directed towards the panel core 9, which results in an undercut with the holding surface 45 on the hook edge 41 and thus a locking effect against the panels 3 and 4 moving apart within the panel plane away from each other in a direction perpendicular to the locked Panel edges M/U (horizontal) causes .

In the present example, the locking heel 43 has a distal heel surface 48 on a heel underside 47 , which touches a bottom 49 of the receiving recess 42 , and a proximal recess 50 which extends laterally to the holding surface 46 of the locking heel 43 . The recess 50 uses a good contact of the holding surfaces 45/46 of the hook edge 41 and the locking shoulder 43.

Within the lock according to FIG. 3 pairs of contact surfaces can also be seen, one surface of the locking hook 11 being in contact with an associated surface of the complementary receiving hook 10 . From top to bottom through locking, this begins with a first pair of contact surfaces, which is formed from the mating surface 39 of the projection 38 of the locking hook and the covered part of the larger chamfer 36 that is arranged on the receiving hook 10 .

The next pair of contact surfaces is formed from an abutment surface 10a and a counter-abutment surface 11d. The abutment surface 10a is provided on the receiving hook 10 with the panel edge M below the large bevel 36 and the counter-abutment surface 11d on the locking hook 11 of the panel edge N below the small bevel 37 . The impact surface 10a is arranged perpendicularly relative to the top side of the panel 7 and the counter-impact surface 11d is relative to the orthogonal on the top side of the panel 7 inclined at an angle of 3°. In this case, an excess of material is provided on an upper part of the counter-impact surface Ld, which is shown in FIG. 3 is drawn in as a dotted line covering E2. In the locked state, the overlap E2 leads to a pressure between the contact surface pairing of impact surface 10a/counter-impact surface 11d, specifically in the upper half of this contact surface pairing. This pressure also causes a seal.

Fig. 4 shows an isometric view of two panels 3 and 4 connected. The representation corresponds to viewing direction IV, as in FIG. 1 noted. In the foreground of Fig. 4 the tongue profiles F of the panels 3 and 4 can be seen. In the perspective to the rear, the panel edge M of the panel 3 and the panel edge U of the panel 4 run. The panel edge M is connected to the receiving hook 10 and the panel edge U to the locking hook 11 according to FIG. 3 provided .

The locking recess 11a is provided on the complementary panel 4, in which the blocking element 13 can be locked automatically. The locking recess 11a also runs through the tongue profile 6 on the panel 4 and ends as an open cross-section at the tongue tip 19 .

The locking hook 11 (panel edge U) of the panel 4 also includes the locking recess 44, which is open at the bottom and is shown in FIG. 3 is shown in cross-section. The locking recess 44 also runs transversely through the tongue profile 6 of the panel 4 and emerges in the lower region of the tongue profile 6 . The open cross section of the locking recess 44 emerges below the spring tip 19 .

Fig. 5 shows a perspective view of two panel pieces of an alternative embodiment of the panel. It differs from Fig. 4 because it is designed for an alternative locking element 52 . For this blocking element 52, a retaining groove 53 is provided with a rectangular cross-section on the receiving hook 10, in which the blocking element 52 can be preassembled. The retaining groove 53 has an upper groove wall 54 which is arranged at a distance R2 from the panel top 7 . A latching contour is also provided on the locking hook 11, which is designed as a locking groove 55 and whose cross section is correspondingly adapted so that the blocking element 52 can be automatically latched there. The ones shown in Fig. 5 proposed retaining groove 53 is prepared for the use of an arcuate locking element 52, as known from US 2014/0366476 A1 (Fig. 3b) or for a locking element known from the same document with rear resilient bristles (Fig. 6a or 6b) prepared, the be supported on the bottom of the retaining groove 52 .

Fig. 6 shows an alternative cross-section through a first pair of edges of a panel according to the invention in the locked state. The panel has a panel edge F with a tongue profile and a panel edge N with a groove profile. The two panel edges F and N are positively locked by the shape of the panel edges shown, both in the vertical and in the horizontal direction.

Fig. 7 shows an alternative cross-section through the second pair of edges of the panel according to the invention in the locked state. This example includes a receiving hook 56 on a panel edge M and a locking hook 57 on a panel edge U. A retaining groove 58 for a locking element 59 is provided in the receiving hook. The locking hook 57 has a contour 60 into which the blocking element 59 can engage automatically. The retaining groove 58 for the locking element 59 is in Arranged substantially parallel to the panel top 7 . A sealing nipple G2 is provided on the locking hook 57 which fits together and seals with a sealing groove W2 provided on the receiving hook 56 .

Fig. 8 shows another example of a second pair of edges. Again, a receiving hook 62 is provided on a panel edge M and a locking hook 63 on panel edge U. The receiving hook 62 includes a retaining groove 64 for a blocking element 65 and the locking hook has a contour 66 in which the blocking element 65 can engage automatically. In contrast to the example of FIG. 7 the retaining groove 64 in the receiving hook 62 is arranged at an incline relative to the top side 7 of the panel. A sealing nipple G2 is provided on the locking hook 63 which fits together and seals with a sealing groove W2 provided on the receiving hook 62 .

Fig. 9 shows another example of a cross-section through the second pair of edges of the panel according to the invention in the locked state. This example also has a receiving hook 68 on a panel edge M and a locking hook 69 on panel edge U, which can be locked automatically in the vertical direction by means of a locking element 70 . In this example, however, a retaining groove 71 for the blocking element 70 is provided on the locking hook 69 and the receiving hook 68 has a contour 72 into which the blocking element 70 can engage automatically. Here a sealing nipple G3 is provided on the receiving hook 69, which fits together and seals with a sealing groove W3 provided on the locking hook 68.

Fig. 10 shows a further alternative of a cross-section through the second pair of edges. This example shows again a receiving hook 74 and a locking hook 75 which can be automatically locked in the vertical direction by means of a locking element 76 . As in Fig. 9, a retaining groove 77 for the blocking element 76 on the locking hook 75 is also provided in this example. The receiving hook 74 has a contour 78 into which the blocking element 76 can automatically latch. A sealing nipple G3 is also provided on the receiving hook 74 here, which fits together with a sealing groove W3 provided on the locking hook 75 and seals.

Fig. 11 shows a final example of a second pair of edges in cross-section. It is based on the example in FIG. 3, in which, in contrast to this, two sealing nipples G2 and G4 are arranged on the locking hook. Matching this, the hook has two sealing grooves W2 and W4 which, together with the sealing nipples G2 and G4, produce an improved seal against water penetrating or passing through.

panel

LIST OF REFERENCE NUMERALS Panel Panel Panel Groove profile a Inner surface (upper groove wall) Tongue profile Panel upper side Panel lower side Panel core 0 Receiving hook 0a Impact surface 1 Locking hook 1a Snap-in recess 1b Lower groove wall 1c Upper groove wall 2 Retaining groove 2a Lower groove wall 2b Upper groove wall 2c Groove base 2d Step 3 Blocking element a Snap-in means b Snap-in clip c Holding means d Shoulder Larger bevel Smaller bevel Projection Counter-surface V-joint Hook edge Receiving recess Locking heel Locking recess Retaining surface (hook edge) Retaining surface (locking hook) Heel underside Distal heel surface Floor Recess Locking element Retaining groove Upper groove wall Locking groove Receiving hook Locking hook Retaining groove Locking element Contour Receiving hook Locking hook Retaining groove Locking element 66 contour

68 pick-up hooks

69 locking hook

70 locking element

71 retaining groove

72 contour

74 pick-up hooks

75 locking hooks

76 locking element

77 retaining groove

78 contour

D distance

El excess

E2 oversize

F panel edge (tongue)

G2 sealing nipple (locking hook)

G3 sealing nipple (hook)

G4 sealing nipple (locking hook)

H height

Kl corner

K2 corner

K3 corner

K4 corner

L panel edge (groove)

M panel edge (receiving hook)

PI panel series

P2 row of panels

U panel edge (locking hook)

S swivel movement

W2 sealing groove (hook)

W3 sealing groove (locking hook)

W4 sealing groove (hook)

Claims

22

Claims Panel (1, 2, 3, 4) with a panel core (9), a panel top (7), a panel bottom (8) and with a first pair of edges and a second pair of edges, the first pair of edges having a groove profile (5). a panel edge (N) and a tongue profile (6) complementary thereto on the opposite panel edge (F), which can be locked by a pivoting movement (S) and then interact in such a form-fitting manner that in the locked state a vertical locking effect can be achieved and a moving apart interlocked panels (1, 2, 3, 4) is counteracted in the plane of the panels (horizontally), the second pair of edges being provided on their opposite panel edges with complementary hook profiles, namely a receiving hook (10, 56, 62, 69, 74) and a locking hook (11, 57, 63, 68, 75), wherein the locking hook (11, 57, 63, 68, 75) by a joining movement in a plane perpendicular to the panel plane at the same time mi can be joined together with the receiving hook (10, 56, 62, 69, 74) for the first pair of edges by means of the pivoting movement (S), with the proviso that the receiving hook (10, 56, 62) has a retaining groove (12, 58, 64) or the locking hook (68, 75) is provided with a retaining groove (71, 77) for a separate locking element (70, 76) with which a vertical locking effect can be achieved, with an abutting surface (10a) and an abutment surface (lld) are provided, with the proviso that the abutment surface (10a) is arranged on the receiving hook (10, 56, 62, 69, 74) and the abutment surface (lld) on the locking hook (11) and both relative to the Panel upper side (7) are arranged essentially orthogonally, characterized in that the abutment surface (lld) of the locking hook (11, 57, 63, 68, 75) or the abutment surface (10a) of the receiving hook is provided with at least one sealing nipple (G2), that the impact surface (10a) of the receiving hook (10, 56, 62, 69, 74) or the counter-impact surface (lld) of the locking hook (11, 57, 63, 68, 75) with at least one sealing groove (W2 ) is provided on the panel edge (M), and that the Di ight nipple (G2) and the sealing groove (W2) are each arranged parallel to the relevant panel edge (M, U) and extend over the entire length of the abutment surface (10a) or counter-abutment surface (lld). Panel according to Claim 1, characterized in that at least one of the pairs of edges has an edge break (16, 17, 36, 37) on its two complementary panel edges (F, N, M, U) which, when two of these panels (1, 2, 3, 4) forms a deepened joint (18, 40). Panel according to claim 2, characterized in - net that the edge breaks (16, 17, 36, 37) at least one of the pairs of edges on the complementary panel edges (F, N, M, U) are of different sizes, so that in the assembled state the larger edge break (16, 36) is covered by the smaller edge break (17, 37). Panel according to Claim 3, characterized in that a projection (14a, 38) is provided on that panel edge (N, U) with the smaller edge breakage (17, 37), on the upper side of which at least part of the smaller edge breakage (17, 37) extends, and that an undercut counter surface (14b, 39) for the covered part of the larger edge break (16, 36) is provided on an underside of the projection (14a, 38). Panel according to Claim 3 or 4, characterized in that the smaller edge break (17) of the first pair of edges is arranged on the groove profile (N) and the larger edge break (16) on the tongue profile (F), and that the smaller edge break (37 ) of the second pair of edges on the locking hook (11, 57, 63, 68, 75) and the larger broken edge (36) on the receiving hook (10, 56, 62, 69, 74). Panel according to one of Claims 1 to 5, characterized in that on the second pair of edges the abutment surface (11d, 31) is inclined by an angle in the range of 1°-5° relative to the orthogonal on the top side of the panel (7), so that the cross section of the locking hook (11, 57, 63, 68, 75) has an oversize (E2) in the inclined area of the counter-impact surface (lld) and/or the cross-section of the groove profile (5) in the inclined area of the counter-impact surface (31) has an oversize (El), so that 25 in the locked state, a pressure between the counter-abutment surface and the abutment surfaces (10a, 30) can be effected. Panel according to Claim 1, characterized in that the pressure between the counter-abutment surface (11d, 31) and the abutment surface (10a, 30) is greater at the upper end of the abutment surface (10a, 30) and towards the lower end of the abutment surface (10a, 30). decreases. Panel according to one of Claims 1 to 7, characterized in that the separate locking element (13, 59, 65, 70, 76) has a snap-in means (13a) with which it can be snapped into a snap-in recess (11a) in the complementary panel edge (M). . Panel according to one of Claims 1 to 8, characterized in that the retaining groove (12, 58, 64, 71, 77) for the separate blocking element (13, 59, 65, 70, 76) has parallel groove walls.