EP3971364A1 - Panel - Google Patents

Abstract

The invention relates to a panel (1, 2, 3, 4) with a second pair of edges which is provided with complementary hook profiles on its opposite panel edges, 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) being connected to the receiving hook (10, 56, 62, 69, 74) can be assembled, with the proviso that the receiving hook (10, 56, 62) with a retaining groove (12, 58, 64) or the locking hook (68, 75) with a retaining groove (71, 77) for a separate locking element (70, 76) with which a vertical locking effect can be achieved, with an abutment surface (10a) being arranged essentially orthogonally relative to the top side of the panel (7) on the receiving hook (10, 56, 62, 69, 74), that on the locking hook (11, 57, 63, 68, 75) a counter-abutment surface (11d) relative is arranged essentially orthogonally to the top side (7) of the panel, that on the second pair of edges at a lower end of the abutment surface (11d) of the locking hook (11, 57, 63, 68, 75) or at a lower end of the abutment surface (10a) of the receiving hook (10, 56, 62, 69, 74) at least one sealing lug (51) is provided, which extends parallel to the respective panel edge (M, U) over the entire length of the counter-abutment surface (11d) or the abutment surface (10a).

Description

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 is formed by 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, with the second pair of edges being provided with complementary hook profiles on their opposite panel edges, namely a receiving hook and a locking hook, wherein the locking hook can be joined to the receiving hook by a joining movement in a plane perpendicular to the panel plane simultaneously by means of the pivoting movement for the first pair of edges, with the proviso e that the receiving hook is provided with a retaining groove for a separate locking element with which a vertical locking effect can be achieved.

A generic panel is from EP 1 415 056 B1 famous. It is a panel that has a first pair of edges with a tongue and groove profile and a second pair of edges covered with hook profiles. As a result, the known panel can be locked with the groove profile of the panels of a previous row of panels by means of a pivoting movement at an edge with a tongue profile. 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 suitable 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 joints and transverse joints of such a covering surface should have a certain degree of 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 mold, which can spread hidden under a floor covering. It has been shown that moisture can penetrate or pass through in particular via the transverse edge and the crossing points of the transverse and longitudinal edges.

The invention has for its object to propose a panel that has an improved design at least Profiles of the second pair of edges to better counteract the passage of water at the joints.

According to the invention, the object is achieved in that an abutment surface is arranged essentially orthogonally on the receiving hook relative to the top side of the panel, a counter-abutment surface is arranged essentially orthogonally on the locking hook relative to the top side of the panel, that on the second pair of edges at a lower end of the counter-abutment surface of the locking hook or at a lower end of the abutment surface of the receiving hook there is a sealing lug which extends parallel to the respective panel edge over the entire length of the counter abutment surface or the abutment surface.

The proposed panel is provided with a sealing measure spatially physically arranged in the area below the deepened joint and above the point of action for the vertical locking effect. In fact, the sealing lug provided on the counter-abutment surface acts, which in the locked state achieves a sealing effect together with the abutment surface. The seal can be achieved by pressing the sealing lug against the abutting surface and/or by swelling of the sealing lug in the presence of moisture, because it is then enlarged by the swelling process at the latest and comes into sealing contact with the abutting surface.

A further measure that contributes to sealing can be achieved if at least one of the edge pairs 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 of the complementary panel edges are expediently each provided with a larger edge break and a smaller edge break, with the larger edge break being covered by the smaller edge break in the assembled state.

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 locking elements are, for example EP 1 415 056 B1 , WO 2011/087425 A1 , US 9,347,469 B2 or U.S. 7,866,110 B2 famous. 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. It is then preferably preassembled in the retaining groove of the receiving hook.

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 panel edges intersect in this corner, creating an intersection zone of the different profile shapes, resulting in a complex three-dimensional shape. The complex shape stems from the fact that the receiving hook must have the retaining groove for the locking element and that therefore this retaining groove at the corner coincides with the tongue profile of the adjacent panel edge of that corner. In order to produce the holding groove, material from the panel core must be removed, for example milled. The milling of the retaining groove runs through the spring profile at one end (transition zone) and cuts part of the panel core that formed the spring. 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 upper side of the spring, which effectively counteract the penetration of water down to the level of the upper side of the spring. It has been shown that a better tightness against water passing through can be achieved in this way.

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 on both sides that are provided in one piece on the panel core, by means of which the locking effect prevents the panels from 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.

Advantageously, the carrier board on which a panel according to the invention is based has a fiber material, such as a high-density fiber material (HDF) or a medium-density fiber material (MDF), a coarse particle board material (OSB) or a wood-plastic composite material (WPC). 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 this case, direct printing in the present case also means printing a previously on a To understand carrier plate applied printing substrate. 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 swelling leads to an improved sealing closure in the area of the sealing lug 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 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 on.

Furthermore, the tightness can be improved by providing a projection on the panel edge with the smaller edge break, on the upper side of which at least part of the smaller edge break extends, and by having an undercut mating surface for the covered part of the larger one on the underside of the projection edge breaking is provided.

It is expedient that the smaller chamfer of the first pair of edges is 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 arranged on the locking hook and the larger chamfer on the receiving hook.

It is also helpful for improving the seal if the abutment surface on the receiving hook below the large broken edge is arranged orthogonally relative to the top of the panel, with the counter-abutment surface provided on the locking hook being at an angle in the range of 1°-5° relative to the orthogonal on the top of the panel ° is inclined, and that the cross section of the locking hook in the inclined area of the abutment surface has an excess, so that in the locked state a pressure between the abutment surface and the abutment surface can be effected. The term "oversize" refers to the ratio of the two joinable panel edges. Based on a theoretical nominal dimension of both panel edges, "oversize" means that there is more material on either the abutment surface and/or the counter abutment surface, based on the nominal dimension, such that the surface of the abutment surface and/or the surface of the counter abutment surface protrudes further distally than the nominal size. In practice, it 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 takes place expediently in the upper area of the abutment surface and the counter-abutment surface and can, for example, extend over half the height of the abutment surface or counter-abutment surface.

In this way, three measures are possible which counteract the penetration of water into the joint or the passage of water to the underside of the panel. At the top, the overlapping of the large chamfer by the small chamfer has a sealing effect. Below this is the excess of the counter-abutment surface, which achieves a pressure against the abutment surface, which has a sealing effect.

At the bottom is the sealing lug, which seals together with the abutment surface when locked.

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.

The benefit can be further improved if the sealing lug is arranged at the lower end of the pressure between the counter-abutment surface and the abutment surface, with which in turn an increased pressure against the abutment surface can be generated in the locked state.

For a closed joint it is useful if the separate blocking element has a latching means with which it can be automatically latched in a latching recess of the complementary panel edge.

An alternative provides that the retaining groove for the separate blocking element has parallel groove walls.

The groove walls of the retaining groove are expediently at a constant distance from one another.

It is also helpful if the retaining groove or the groove walls of the retaining groove are arranged inclined relative to the top side of the panel.

Furthermore, it is useful if the free opening of the inclined retaining groove is directed upwards, i.e. towards the top of the panel.

In the following, the invention is illustrated by way of example in a drawing and described in detail using a number of exemplary embodiments.

Fig. 1

eine schematische Darstellung mehrerer erfindungsgemäßer Paneele im Verbund,

Fig. 2

beispielhaft einen Querschnitt durch ein erstes Kantenpaar eines erfindungsgemäßen Paneels im verriegelten Zustand,

Fig. 3

einen Querschnitt durch das zweite Kantenpaar des erfindungsgemäßen Paneels im verriegelten Zustand,

Fig. 4

eine perspektivische Darstellung zweier Paneelstücke mit den Paneelkanten gemäß Fig. 2 im verriegelten Zustand und mit dem Federprofil gemäß Fig. 1,

Fig. 5

eine perspektivische Darstellung zweier Paneelstücke im verriegelten Zustand mit einem alternativen separaten Sperrelement,

Fig. 6

einen alternativen Querschnitt durch ein erstes Kantenpaar eines erfindungsgemäßen Paneels im verriegelten Zustand,

Fig. 7

einen alternativen Querschnitt durch das zweite Kantenpaar des erfindungsgemäßen Paneels im verriegelten Zustand,

Fig. 8

ein weiteres Beispiel eines Querschnitts durch ein zweites Kantenpaar des erfindungsgemäßen Paneels im verriegelten Zustand,

Fig. 9

noch ein Beispiel eines Querschnitts durch das zweite Kantenpaar des erfindungsgemäßen Paneels im verriegelten Zustand,

Fig. 10

ein letztes Beispiel eines Querschnitts durch das zweite Kantenpaar des erfindungsgemäßen Paneels im verriegelten Zustand.

Show it:

1

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

2

exemplarily a cross section through a first pair of edges of a panel according to the invention in the locked state,

3

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

4

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

figure 5

a perspective view of two panel pieces in the locked state with an alternative separate locking element,

6

an alternative cross section through a first pair of edges of a panel according to the invention in the locked state,

7

an alternative cross section through the second pair of edges of the panel according to the invention in the locked state,

8

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

9

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

10

a last example of a cross section through the second pair of edges of the panel according to the invention in the locked state.

In 1 four identical panels 1, 2, 3 and 4 according to the invention are shown schematically in sections, namely joined together to form a covering surface. The covering 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 K1, 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 2 shown 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 in 3 shown and includes the panel edge 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 blocking element 13 . The locking member 13 is assembled and used to lock 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 in 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 in 1 indicated by the panel 4, which is shown in dashed lines in an inclined initial position 4'. The panel 4 is moved down from its starting 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 P1. 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 1 meets at a corner K1 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 impermeability of the covering surface against water passing through. The tongue profile 6 of the panel edge F meets the locking hook 11 of the panel edge U at the critical corner K1. The cross sections of the spring profile 6 and the locking hook 11 overlap spatially and a complex spatial shape is created at the corner K1.

In combination with other identical panels 1 and 3, the relevant corner K1 of panel 4 is in an area marked IV. A T-joint is formed 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 looking in the direction of arrow IV is given below with reference to 4 explained in detail.

Based on 2 the first pair of edges of the panel according to the invention is shown in cross section. The viewing direction corresponds to that in 1 marked cutting line II - II. The panel edges F and N of panels 1 and 4 are in 2 so opposite, as in 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 F/N can be fragmentarily shown in a locked condition, as if the panel were split 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 interlocked in the same way to obtain a covering surface for a building wall, floor or ceiling. That's why they can Figures 2 and 3 also be understood as two panels, which are shown in part.

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 in 3 shown in cross section, also in the assembled locked condition. The viewing direction corresponds to that in 1 marked 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 part of the larger chamfer 36 and is in contact with this part, so that a first seal against ingress of water is created. When locked, the two bevels form a V-joint 40.

The receiving hook 10 and the locking hook 11 lock the joined panel edges M/U in the vertical and also in the horizontal direction. In this exemplary embodiment, a separate locking element 13 (vertical locking element) can be inserted into the holding groove 12 of the receiving hook 10 provided for this purpose for the vertical locking effect. A locking recess 11a is provided on the locking hook, into which the blocking element 13 can snap. The 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 greater 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, whose cross section is in 3 is shown as an example. In the hatched blocking element 13 shown, there is a latching means 13a in Form of a locking 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 horizontal locking effect according to 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 towards 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 panel underside 8 and a locking recess 44 open at the bottom. The locking shoulder 43 fits into the receiving recess 42 of the receiving hook 10 and interacts 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).

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 shoulder 43. The recess 50 uses a good contact of the holding surfaces 45/46 of the hook edge 41 and locking shoulder 43.

Inside the lock according to 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 by 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, which 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 chamfer 36 and the counter-abutment surface 11d on the locking hook 11 of the panel edge N below the small chamfer 37. The abutting surface 10a is arranged perpendicularly relative to the top side 7 of the panel and the counter-abutting surface 11d is inclined by an angle of 3° relative to the orthogonal line on the top side 7 of the panel. In this case, an excess of material is provided on an upper part of the counter-impact surface 11d, which in 3 is drawn in dashed as oversize E2. In the locked state, the oversize E2 leads to a pressure between the contact surface pairing of abutment surface 10a/counter abutment surface 11d, specifically in the upper half of this contact surface pairing. This pressure also causes a seal.

The third contact surface pairing is a pairing consisting of the abutting surface 10a of the receiving hook 10 and one Sealing nose 51 provided at the lower end of the abutment surface 11d. The sealing nose 51 extends parallel to the panel edge U over the entire length of the abutment surface 11d. The sealing lug 51 protrudes with an excess from the counter-abutment surface 11d, so that in the locked state it bears against the abutment surface 10a with a certain pressure and causes an additional seal there.

4 shows an isometric representation of two connected panels 3 and 4. The representation corresponds to viewing direction IV, as in FIG 1 noted. In the foreground of 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 3 Mistake.

Furthermore, in 4 the critical corner K1 of the panel 3 is noted, at which the receiving hook 10 including the retaining groove 12 provided for the locking element 13 (panel edge M) meets the tongue profile (panel edge F). The perspective of 4 shows that the retaining groove 12 runs through the spring profile and exits at the spring tip. In the area in which the retaining groove 12 traverses the tongue profile, part of the upper side of the tongue also falls away. This creates a gap in the top of the spring.

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 on the panel 4 and ends as an open cross-section at the tongue tip.

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

figure 5 Figure 12 shows a perspective view of two pieces of panel of an alternative embodiment of the panel. It differs from 4 , because it is designed for an alternative locking element 52. For this blocking element 52, a holding groove 53 with a rectangular cross-section is provided 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 top side 7 of the panel. 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. In the figure 5 proposed retaining groove 53 is prepared for the use of an arcuate locking member 52, as shown in FIG US 2014/0366476 A1 ( Figure 3b ) known, or for a blocking element known from the same document with rear resilient bristles ( Figure 6a or 6b ) Prepared, which are supported on the groove bottom of the retaining groove 53. It is important that the upper side of the tongue profile of the panel edge F is arranged at a higher level than the upper groove wall 54 of the retaining groove 53 of the receiving hook 10. The tongue profile of the panel edge F meets the receiving hook 10 at the critical corner K1 of the panel 3. The retaining groove 53 runs through the tongue profile in the area of the corner K1, so that the material of the tongue profile is removed.

However, the top of the feather is not removed. A distance R1 is provided between the panel top 7 and the tongue top, which is greater than the distance R2 between the upper groove wall 54 of the retaining groove 53 and the panel top 7.

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 complementary panel edges shown, both in the vertical and in the horizontal direction.

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 comprises a receiving hook 56 on a panel edge M and a locking hook 57 on a panel edge U. A holding groove 58 for a locking element 59 is provided in the receiving hook. The retaining groove 58 has parallel groove walls which are at a constant distance from one another. The locking hook 57 has a contour 60 into which the blocking element 59 can automatically engage during a joining movement. The retaining groove 58 for the blocking element 59 is arranged essentially parallel to the top side 7 of the panel. A sealing lug 51 is provided on the locking hook 57 and touches the receiving hook 56 . The contact takes place above and close to the retaining groove 58 of the receiving hook 56.

8 shows another example of a second pair of edges. A receiving hook 62 is again provided on a panel edge M and a locking hook 63 on panel edge U.

The receiving hook 62 includes a holding groove 64 for a locking element 65, the holding groove 64 having parallel groove walls which are at a constant distance from one another. The locking hook has a contour 66 in which the blocking element 65 can automatically engage during a joining movement. In contrast to the example 7 here the retaining groove 64 in the receiving hook 62 is arranged inclined relative to the top side 7 of the panel. The free opening of the inclined retaining groove 64 is directed upwards towards the top of the panel. A sealing lug 51 which touches the receiving hook 62 is provided on the locking hook 63 . The contact takes place above and close to the retaining groove 64 of the receiving hook 62.

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 automatically locked 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 nose 51 is provided on the receiving hook 69 and the sealing nose 51 touches the locking hook 68. The contact takes place above and close to the retaining groove 71 of the locking hook 68.

10 shows a final example of a cross-section through the second pair of edges. This example in turn has a receiving hook 74 and a locking hook 75, which automatically by means of a locking element 76 in the vertical direction can be locked. As in 9 a retaining groove 77 for the blocking element 76 on the locking hook 75 is also provided in this example. The retaining groove 77 has parallel groove walls which are at a constant distance from one another. The receiving hook 74 has a contour 78 into which the blocking element 76 can be locked automatically. Here, too, a sealing nose 51 is provided on the receiving hook 74 and the sealing nose 51 touches the locking hook 75. The contact takes place above and close to the retaining groove 77 of the locking hook 75.

Reference List

1

panel

2

panel

3

panel

4

panel

4'

starting position

6

spring profile

7

panel top

8th

panel underside

9

panel core

10

pick-up hook

10a

impact surface

11

locking hook

11a

recess

11b

lower groove wall

11c

upper groove wall

12

retaining groove

12a

lower groove wall

12b

upper groove wall

12c

groove bottom

12d

step

13

blocking element

13a

snap-in means

13b

locking tab

13c

holding means

13d

shoulder

36

larger bevel

37

smaller bevel

38

head Start

39

counter surface

40

V-joint

41

hook edge

42

recording recess

43

locking heel

44

locking recess

45

Holding surface (hook edge)

46

holding surface (locking hook)

47

heel bottom

48

distal heel surface

49

floor

50

recess

51

sealing nose

52

blocking element

53

retaining groove

54

upper groove wall

55

locking groove

56

pick-up hook

57

locking hook

58

retaining groove

59

blocking element

60

contour

62

pick-up hook

63

locking hook

64

retaining groove

65

blocking element

66

contour

68

pick-up hook

69

locking hook

70

blocking element

71

retaining groove

72

contour

74

pick-up hook

75

locking hook

76

blocking element

77

retaining groove

78

contour

D

distance

E1

excess

E2

excess

f

panel edge (tongue)

H

height

K1

corner

K2

corner

K3

corner

K4

corner

L

panel edge (groove)

M

panel edge (pick-up hook)

P1

row of panels

p2

row of panels

u

panel edge (locking hook)

S

pivoting movement

Claims (10)

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) on a panel edge (N) and a spring profile (6) complementary thereto on the opposite panel edge (F), which can be locked by a pivoting movement (S) 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 locked ones can be moved apart 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 by means of the Sch pivoting movement (S) for the first pair of edges can be joined with the receiving hook (10, 56, 62, 69, 74), 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, characterized in that on the receiving hook (10, 56, 62, 69, 74) an abutment surface (10a) is arranged essentially orthogonally relative to the top side of the panel (7), that on the locking hook (11, 57, 63, 68, 75) a counter-abutment surface (11d) is arranged essentially orthogonally relative to the top side of the panel (7). arranged so that on the second pair of edges at a lower end of the counter-abutment surface (11d) of the locking hook (11, 57, 63, 68, 75) or at a lower end of the abutment surface (10a) of the receiving hook (10, 56, 62, 69 , 74) at least one sealing lug (51) is provided, which extends parallel to the respective panel edge (M, U) over the entire length of the counter-abutment surface (11d) or the abutment surface (10a). Panel according to Claim 1, characterized in that at least one of the edge pairs has an edge break (16, 17, 36, 37) on its two complementary panel edges (F, N, M, U) which, when two of these panels (1st , 2, 3, 4) forms a deepened joint (18, 40). Panel according to Claim 2, characterized in that the edge breaks (16, 17, 36, 37) of at least one of the edge pairs of the complementary panel edges (F, N, M, U) each with a larger edge break (16, 36) and a smaller edge break (17, 37) and 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 the panel edge (N, U) with the smaller edge break (17, 37), on the upper side of which at least part of the smaller edge break (17, 37 ) and that an undercut mating 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 is arranged 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 counter-abutment surface (11d) or the abutment surface (10a) is inclined by an angle in the range of 1°-5° relative to the orthogonal on the panel top side (7). that the cross-section of the locking hook (11, 57, 63, 68, 75) has an oversize (E2) in the inclined area of the counter-abutment surface (11d) or the abutment surface, so that in the locked state there is pressure between the counter-abutment surfaces and the abutment surfaces (10a ) can be effected. Panel according to claim 6, characterized in that the pressure between the counter-abutment surface (11d) and the abutment surface (10a) is greater at the upper end of the abutment surface (10a) and towards the lower end of the Impact surface (10a) decreases towards. Panel according to Claim 6 or 7, characterized in that the sealing lug (51) is arranged at the lower end of the compression between the counter-abutment surface (11d) and the abutment surface (10a), with which, in the locked state, an increased pressure against the abutment surface (10a ) can be generated. Panel according to one of Claims 1 to 8, 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). is. Panel according to one of Claims 1 to 8, characterized in that the retaining groove (12, 58, 64, 77) for the separate locking element (59, 65, 76) has parallel groove walls.

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