Floorboards and flooring systems with such a floorboard

Abstract

Floorboard with an elongated board body (1) of rectangular shape, defining a longitudinal direction and a transverse direction, and having a bottom surface forming a bearing surface (2) of the floorboard, a top surface forming a walking surface (3) of the floorboard, two longitudinally extending side surfaces (4, 5) and two transversely extending end surfaces, wherein a groove (6) open towards the side surface (4) is formed in one side surface (4) of the board body (1), which has a locking recess (7) on its bottom side facing the bearing surface (2), which is bounded towards the side surface (4) by a locking projection (8), and wherein a tenon (9) is formed on the other side surface (5) of the board body (1), which is provided with a locking rib (10) on its underside facing the bearing surface (2), and wherein the groove (6) and the tenon (9) are designed such that two identical floorboards can be connected to each other,by inserting the tenon (9) of one floorboard into the groove (6) of the other floorboard under pressure and elastic deformation of the area of ​​the board body (1) located below the groove (6), and by the locking lug (10) on the tenon (9) and the locking recess (7) of the groove (6) engaging with each other, characterized in that the locking recess (7) has on its outer side facing the locking projection (8) a retaining surface (7a) that is in particular flat and is inclined relative to the bearing surface (2) of the floorboard at an angle (α) that is > 46°, in particular 48° ± 1°, and in that the locking lug (10) has a corresponding counter-retaining surface (10a) to the retaining surface (7a), wherein the retaining surface (7a) and the counter-retaining surface (10a) are designed to be complementary to each other,that in the connected state of two floorboards, the holding surface (7a) of one floorboard and the counter-holding surface (10a) of the other floorboard come into full contact with each other.

Description

[0001] The present invention relates to a floorboard with an elongated board body of rectangular shape, which defines a longitudinal direction and a transverse direction and has a bottom surface, which forms a bearing surface of the floorboard, a top surface, which forms a walking surface of the floorboard, two longitudinally extending side surfaces and two transversely extending end surfaces, wherein a groove open towards the side surface is formed in one side surface of the board body, which has a locking recess on its bottom side facing the bearing surface, which is bounded towards the side surface by a locking projection, and wherein a tenon is formed on the other side surface of the board body, which is provided with a locking rib on its underside facing the bearing surface, and wherein the groove and the tenon are designed such that two identical floorboards can be connected to each other.The invention relates to the insertion of the tenon of one floorboard into the groove of another floorboard under pressure and elastic deformation of the area of ​​the board body located below the groove, whereby the locking lug on the tenon and the locking recess of the groove engage with each other. Furthermore, the invention relates to a flooring system formed from such floorboards.

[0002] In other words, the invention relates to flooring systems such as parquet floors, which are formed from individual floorboards that can be joined together using tongue and groove connections. Such a flooring system is known, for example, from EP 1 338 722 B1.

[0003] The floorboards known from this publication have an elongated, rectangular body, one side of which has a groove open towards that side, and the other side of which has a tenon. The groove has a locking recess on its underside facing the bearing surface of the board, which is bordered on the side by a locking projection, and the tenon has a corresponding locking rib on its underside facing the bearing surface.The tongue and groove are designed to be complementary, allowing two identical floorboards to be joined by inserting the tenon of one board into the groove of the other. This is achieved by applying pressure and elastic deformation to the area of ​​the board below the groove, ensuring a secure, interlocking connection. The locking lug on the tenon and the corresponding recess in the groove engage in a form-fitting manner, preventing the joint from being easily disassembled. To further enhance the elasticity of the area below the groove, a slot is incorporated into the board body. This slot extends from the bottom of the groove and / or the bottom edge of the groove into the board body and is inclined relative to the bearing surface of the floorboard.

[0004] The familiar floorboards have proven their worth in practice. However, efforts are underway to optimize the connection between two floorboards and to simplify their installation.

[0005] The object of the invention is therefore to design a floorboard and a floorboard system of the type mentioned above in such a way that an optimized connection between two floorboards can take place and the floorboards can be laid easily.

[0006] This problem is solved in a floorboard of the type mentioned above by the fact that the locking recess has a particularly flat holding surface on its outer side facing the locking projection, which is inclined at an angle to the bearing surface of the floorboard that is > 46°, in particular 48° ± 1°, and that the locking web has a counter-holding surface corresponding to the holding surface, wherein the holding surface and the counter-holding surface are designed to be complementary to each other in such a way that, in the connected state of two floorboards, the holding surface of one floorboard and the counter-holding surface of the other floorboard come into full contact with each other.

[0007] According to the invention, the locking recess thus has a retaining surface on its outer side facing the locking projection, which is expediently flat, and the locking rib has a corresponding counter-retaining surface, which is therefore also expediently flat and has the same slope as the retaining surface, so that the retaining surface and the counter-retaining surface come into full contact with each other when two identical floorboards are joined together. The slope of the retaining surface, and thus also of the counter-retaining surface, is chosen to be so steep that comparatively high forces are required to release a connection once it has been made.

[0008] According to a preferred embodiment of the invention, the locking recess has a positioning surface – in particular a flat surface – on its inner side pointing away from the locking projection, which is inclined at an angle of at least 16° to the bearing surface of the floorboard, wherein the inclination is opposite to the inclination of the holding surface, and the locking rib has a counter-positioning surface corresponding to the positioning surface, wherein the positioning surface and the corresponding counter-positioning surface are designed to be complementary to each other such that, in the connected state of two floorboards, the positioning surface of one floorboard and the corresponding counter-positioning surface of the other floorboard come into planar contact with each other.

[0009] In this embodiment, a positioning surface adjoins the holding surface, and the locking tab has a corresponding counter-positioning surface. In other words, the locking recess is formed by the holding surface and the positioning surface, and the locking projection is formed by two counter-surfaces corresponding to the holding surface and the positioning surface. The angle of the positioning surface of the locking recess, and correspondingly also the angle of the counter-positioning surface corresponding to the positioning surface on the locking tab, relative to the horizontal bearing surface of the floorboard, is at least 16°. Preferably, the angle is at least 17°, in particular 17° ± 1°, and preferably 17.5° ± 0.3°.

[0010] The arrangement is designed so that, when connected, both the holding surface and the positioning surface of the locking recess are in full contact with the corresponding mating surfaces on the locking rib of the connected floorboard. This ensures that the two floorboards are precisely aligned and positioned relative to each other. Therefore, no additional gluing of the floorboards is required.

[0011] In a further embodiment of the invention, the holding surface and the positioning surface of the locking recess are directly adjacent to each other. The same can apply accordingly to the corresponding mating surfaces on the locking rib.

[0012] Preferably, the tongue and tenon each have horizontal contact surfaces on their upper side, which are in full contact when two floorboards are joined. In other words, when two floorboards are joined, there is full contact between the tongue of one floorboard and the tenon of the other on the underside via the holding / positioning surface and the corresponding mating surfaces, and on the upper side via the contact surfaces, so that the two floorboards are also positioned exactly relative to each other in the vertical direction.

[0013] In a further embodiment of the floorboard according to the invention, it can be provided that a slot is formed in the board body, which extends from the base of the groove and / or the bottom side of the groove into the board body, wherein the slot has an inclined slot section which is inclined relative to the bearing surface of the floorboard and approaches the bearing surface with increasing distance from the groove.

[0014] The inclined slot section can transition directly into the groove. Alternatively, the inclined slot section can run straight. The slot serves to increase the elasticity of the area of ​​the plank body below the groove, i.e., to make it softer so that it can be deformed relatively easily when the tenon of one plank is inserted into the groove of another. The slot can have a length of 5 to 10 mm in the transverse direction of the plank body.

[0015] According to a preferred embodiment of the invention, a floor surface section is formed on the underside of the plank body, which is inclined relative to the bearing surface of the floor plank and extends from the side surface of the plank body in which the groove is formed, in the transverse direction of the plank body, viewed until behind the groove and transitions into the bearing surface of the floor plank.

[0016] Preferably, the inclined floor surface section can extend into the area of ​​the inclined slot section, particularly terminating in its central region when viewed in the transverse direction of the floorboard. The inclined floor surface section creates a space below the groove into which the area of ​​a floorboard lying below the groove can be deformed when two floorboards are joined together. In this way, the tongue and tenon of two floorboards can be inserted relatively easily to connect them. If a flooring system according to the invention is to be glued to a substrate, residual adhesive can also collect in this space. Such residual adhesive does not need to be removed once it has hardened after work interruptions, which simplifies the installation process.

[0017] According to a further embodiment, the inclined floor section can run parallel to the underside of the inclined slot section. Advantageously, the inclined floor surface section is inclined at an angle of at least 6°, in particular at least 6.5°, relative to the bearing surface of the floorboard, wherein the angle is in particular 7° ± 0.2° and preferably 7° ± 0.1°.

[0018] In a further embodiment of the invention, it is provided that an inclined surface is formed on the outside of the locking projection, which is inclined at an angle of at least 40°, preferably 45° ± 0.5°, relative to the bearing surface, the inclination being directed opposite to the holding surface, and that the pin has a contact surface corresponding to the inclined surface, the arrangement being such that the inclined surface of the locking projection of one floorboard and the contact surface and the counter-positioning surface of the pin of another floorboard interact to elastically deform the area of ​​the board body located below the groove downwards in the direction of the bearing surface of the floorboard when the pin of one flooring element is inserted into the groove of the other flooring element.

[0019] A further embodiment of this design is characterized in that a transition surface is formed on the locking projection, which connects the holding surface and the inclined surface and is in particular flat, wherein the transition surface is inclined in the same direction as the inclined surface, but has a smaller inclination with respect to the support surface than the inclined surface, wherein the angle of inclination to the support surface is in particular 6 to 8°, preferably 6.8 ± 0.2°.

[0020] This embodiment ensures that the area of ​​a floorboard body located below the groove of a floorboard is elastically deformed downwards when the tenon of another floorboard is inserted into the groove in a horizontal direction, i.e., parallel to the bearing surface of the floorboards. The inclined surface and the transition surface on the locking projection of one floorboard interact with the contact surface and the counter-positioning surface on the locking rib of the other floorboard to effect the deformation.

[0021] When the two floorboards are joined, the area of ​​the floorboard below the groove elastically returns to its original shape. The desired elasticity can be adjusted by the length of the groove, the angle of inclination of the inclined groove section, and the vertical distance between the deepest point of the groove and the floor surface of the floorboard.

[0022] Advantageously, the arrangement is such that the area of ​​the floorboard body located below the groove of a floorboard, which is elastically deformed when a tenon of another floorboard is inserted, only partially returns to its original position when two floorboards are connected, so that a holding pressure is exerted on the connection between the locking recess and the locking web.

[0023] In other words, a compressive force directed from the underside to the top of the plank should be exerted on the tongue-and-groove connection, further improving the bond between two floor planks. This can be achieved by ensuring that, in the unconnected state, the vertical distance between the deepest point of the tongue recess (i.e., the transition area between the holding surface and the positioning surface) and the opposite top surface of the groove (i.e., the groove's bearing surface) is smaller than the corresponding vertical distance at the transition between the mating surfaces on the underside of the tongue and its top surface (in particular, the bearing surface provided therein), which correspond to the holding and positioning surfaces. This, of course, only applies if the mating surfaces are indeed exactly complementary to the holding and positioning surfaces.

[0024] In this design, the profiles of the locking recess and the locking rib are theoretically rotated minimally relative to each other. However, this offset is negligible.

[0025] In the floorboards according to the invention, the groove and tenon extend over the entire length or substantially the entire length of the floorboards. The same applies accordingly to the locking recess, the locking projection, the locking rib, and also the slot. Where angles are specified, these refer to the angle relative to the bearing surface of the floorboards in a plane perpendicular to the bearing surface. The retaining surface and the slot are inclined in the same direction, i.e., they approach the bottom side of the board body with increasing distance from the side surface in which the groove is formed. The positioning surface, the positioning surface of the locking recess, as well as the inclined surface and the transition surface of the locking projection are inclined in opposite directions.

[0026] For further embodiments of the invention, reference is made to the dependent claims and the following description of an exemplary embodiment with reference to the accompanying drawing. The drawing shows Fig. 1 two floorboards according to an embodiment of the present invention in the connected state and the Fig. 2a to 2f the joining process between the two floorboards of the Fig. 1.

[0027] In the Fig. Figure 1 shows two floorboards of a flooring system according to the present invention in their connected state. Each floorboard has an elongated board body 1 of rectangular shape, which defines a longitudinal direction extending perpendicular to the axis of the image and a transverse direction. The board body 1 has a bottom surface, which forms a bearing surface 2 of the floorboard, a top surface, which forms a walking surface 3 of the floorboard, two longitudinally extending side surfaces 4, 5 and two transversely extending end surfaces.

[0028] In the Fig. 1. The floorboards are not shown across their entire width; rather, the connection area between the two floorboards is shown.

[0029] A groove 6, open towards the side surface 4, is formed on one side surface 4 of the plank body 1. On its bottom side facing the support surface 2, the groove 6 has a locking recess 7, which is bounded on the side surface 4 by a locking projection 8. On the other side surface 5 of the plank body 1, a tenon 9 is formed, which is provided with a locking lug 10 on its underside facing the support surface 2. The groove 6 and the tenon 9 are designed such that two identical floor planks can be joined together by inserting the tenon 9 of one floor plank into the groove 6 of the other floor plank under pressure and elastic deformation of the area of ​​the plank body 1 located below the groove 6. The locking lug 10 on the tenon 9 and the locking recess 7 of the groove 6 then engage in a locking manner.

[0030] The locking recess 7 of the groove 6 has a flat retaining surface 7a on its outer side facing the locking projection 8, which is inclined at an angle α of 48° relative to the bearing surface 2 of the floorboard. The locking recess 7 further comprises a positioning surface 7b, which adjoins the retaining surface 7a on its inner side facing away from the locking projection 8 and is inclined at an angle β of 17.8° relative to the bearing surface 2 of the floorboard, where the inclination of the positioning surface 7b is opposite to the inclination of the retaining surface 7a. The locking recess 7 is thus formed between the retaining surface 7a and the positioning surface 7b.

[0031] The locking lug 10 of the pin 9 is designed to be complementary to the locking recess 7 of the groove 6 and comprises a counter-holding surface 10a corresponding to the holding surface 7a and a counter-positioning surface 10b corresponding to the positioning surface 7b of the locking recess 7. The arrangement is such that the holding surface 7a and the counter-holding surface 10b, as well as the positioning surface 7b and the counter-positioning surface 10b of the groove 6 and the locking lug 10, engage with each other over a surface area when two floorboards – as in Fig. 1 shown - are connected to each other. Accordingly, the counter-holding surface 10a and the counter-positioning surface 10b of the locking bar 10 are inclined relative to the bearing surface 2 of the floorboard by the same angles α , β as the holding surfaces 7a and the positioning surface 7b of the locking recess 7. On their upper side, the groove 6 and the pin 9 each have horizontal contact surfaces 11, 12 which are in surface contact when two floorboards are connected.

[0032] A slot 13 is formed in the plank body 1, extending from the base of the groove – i.e., the inner boundary wall of the groove 6 – into the plank body 1 at the transition to the bottom side of the groove 6. The slot 13 has an inclined slot section 13a, which extends from the groove 6 to just before the end of the slot and is inclined relative to the bearing surface 2 of the floor plank, approaching the bearing surface 2 with increasing distance from the groove 6. The inclination of the inclined slot section 13 thus runs in the same direction as that of the retaining surface 7a of the groove 6. The inclined slot section 13a runs in a straight line. At its closed end, which points away from the groove 6, the underside of the slot 13 runs parallel to the bearing surface 2 of the floor plank.The elasticity of the area of ​​the plank body 1 located below the groove 6 and the slot 13 can be adjusted by the length of the slot 13 and the vertical distance between the closed end of the slot and the support surface 2.

[0033] A floor surface section 14 is formed on the underside of the plank body 1. This section is inclined relative to the bearing surface 2 of the floor plank and extends from the side surface 4 of the plank body 1, in which the groove 6 is formed, in the transverse direction of the plank body 1, to behind the groove 6, specifically to the central area of ​​the inclined slot section 13a. The inclined floor surface section 14 runs parallel to the underside of the inclined slot section 13a, with the angle γ between the inclined floor surface section 14 and the bearing surface 2 of the floor plank 6 being 9°.

[0034] On the outer side of the locking projection 8, an inclined surface 15 is formed, which is inclined at an angle of 45° to the bearing surface 2. The inclination is directed opposite to that of the retaining surface. Furthermore, a transition surface 16 is formed on the locking projection 8, which connects the inclined surface 15 of the locking projection with the retaining surface 7a of the locking recess 7. The transition surface 16 is inclined in the same direction as the inclined surface 15, but has a smaller inclination with respect to the bearing surface 2 than the inclined surface 15. In this case, the angle is 6.6°.

[0035] The inclined surface 15 and the transition surface 16 form so-called ramps, which interact with corresponding counter surfaces on the tenon 9 to elastically deform the area of ​​the plank body 1 located below the groove 6 downwards towards the bearing surface 2 of the floor plank when the tenon 9 of one floor element is inserted into the groove 6 of the other floor element. The counter surfaces on the tenon side are the counter-positioning surface 10b of the locking lug 10 and a contact surface 17 on the underside of the tenon 9, extending towards its free end.

[0036] The interaction of the inclined surface 15 and the transition surface 16 at the locking projection 8 on the one hand and the opposing surfaces at the tenon 9 on the other hand when joining two floorboards is described in the Fig. 2a to 2f are recognizable. When assembled, the contact surface 17 first comes into contact with the inclined surface 15 and then with the transition surface 16, and slides over the contact surface 16, see Fig. 2c. In this process, the area of ​​the plank body 1 lying below the groove 6 and the slot 13 – called the groove cheek – is elastically pressed down slightly, as in the Fig. 2c is recognizable. In the Fig. Figure 2c indicates that the groove cheek would theoretically sink below the support surface 2. Since the floorboards rest on a substrate, such a sinking cannot occur; instead, the groove cheek undergoes elastic deformation. Subsequently, the counter-positioning surface 10b of the locking web 10 comes into contact with the inclined surface 15 / transition surface 16, and the interaction of these surfaces further depresses the groove cheek, as shown in Figure 2c. Fig. 2d and Fig. 2e can be identified. Finally, the locking lug 10 engages behind the locking projection 8, so that the counter-holding surface 10a of the locking lug 10 and the holding surface 7a of the locking recess 7 come into contact with each other. At the end of the connection process, the in Fig. The position shown in Figure 1 is reached, in which the detent projection 8 and the groove 6 are engaged, with the holding surface 7a and the positioning surface 7b of the detent recess being in full contact with the counter-holding surface 10a and the counter-positioning surface 10b of the detent rib 10. This position is reached because the groove wall elastically springs back towards its initial position. The arrangement is such that this initial position is maintained in the Fig.The connection state shown in Figure 1 is not fully achieved, so that the groove cheek exerts an upward compressive force on the connection area between the locking recess 7 and the locking projection 8 and presses the contact surfaces 11, 12 on the top of the pin 9 and groove 6 against each other. Reference symbol list 1 plank body 2 Support surface 3 Footplate 4 side surface 5 side surface 6 Nut 7 rest recess 7a Holding surface 7b Positioning area 8 Rastvorsprung 9 cones 10 Resting Footbridge 10a Counter-holding surface 10b Counter-positioning surface 11 Plant area 12 Plant area 13 slots 13a inclined slot closure 14 Soil area section 15 inclined surfaces 16 transition areas 17 contact surfaces α Angle of the holding surface β Angle of the positioning surface γ Angle of the inclined floor surface section QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 1 338 722 B1

[0002]

Claims

[1] Floorboard with an elongated plank body (1) of rectangular basic shape, which defines a longitudinal direction and a transverse direction and has an underside which forms a support surface (2) of the floorboard, an upper side which forms a tread surface (3) of the floorboard, two side surfaces (4, 5) running in the longitudinal direction and two end surfaces running transversely thereto, wherein in one side surface (4) of the plank body (1) a groove (6) is formed which is open towards the side surface (4), which has a locking recess (7) on its bottom side facing the support surface (2) and which is delimited towards the side surface (4) by a locking projection (8), and a tenon (9) is formed on the other side surface (5) of the plank body (1), which tenon is provided with a locking web (10) on its underside facing the support surface (2), and wherein the groove (6) and the tenon (9) are designed in such a way,that two identical floorboards can be connected to each other by inserting the tenon (9) of one floorboard into the groove (6) of the other floorboard under pressure and elastic deformation of the area of ​​the floorboard body (1) lying below the groove (6) and the locking web (10) on the tenon (9) and the locking recess (7) of the groove (6) engaging with each other, , characterized byin that the locking recess (7) has, on its outer side directed towards the locking projection (8), a particularly flat holding surface (7a) which is inclined relative to the support surface (2) of the floorboard by an angle (α) which is > 46°, in particular 48° ± 1°, and in that the locking web (10) has a counter-holding surface (10a) corresponding to the holding surface (7a), wherein the holding surface (7a) and the counter-holding surface (10a) are designed to be complementary to one another in such a way that when two floorboards are connected, the holding surface (7a) of one floorboard and the counter-holding surface (10a) of the other floorboard come into surface contact with one another. [2] Floorboard according to claim 1, characterized bythat the locking recess (7) has, on its inner side facing away from the locking projection (8), a - in particular flat - positioning surface (7b) which is inclined relative to the support surface (2) of the floorboard by an angle (β) of at least 16°, wherein the inclination is opposite to the inclination of the holding surface (7a), and that the locking web (10) has a counter-positioning surface (10b) corresponding to the positioning surface (7b), wherein the positioning surface (7b) and the corresponding counter-positioning surface (10b) are designed to be complementary to one another in such a way that, when two floorboards are connected, the positioning surface (7b) of one floorboard and the corresponding counter-positioning surface (10b) of the other floorboard come into surface contact with one another. [3] Floorboard according to claim 2, characterized by, that the angle (β) between the positioning surface (7b) and the support surface (2) of the floorboard is at least 17°, in particular 17° ± 1° and preferably 17.5° ± 0.3°. [4] Floorboard according to claim 2 or 3, characterized by r, that the holding surface (7a) and the positioning surface (7b) of the locking recess are directly adjacent to one another. [5] Floorboard according to one of the preceding claims, characterized by that the groove (6) and the tenon (9) each have horizontal contact surfaces (11, 12) on their upper side, which are in flat contact when two floorboards are connected. [6] Floorboard according to one of the preceding claims, characterized byin that a slot (13) is formed in the plank body, which extends from the groove base and / or the bottom side of the groove (6) into the plank body (1), wherein the slot (13) has an inclined slot section (13a) which is inclined with respect to the support surface (2) of the floorboard and approaches the support surface (2) with increasing distance from the groove (6). [7] Floorboard according to claim 6, characterized by that the inclined slot section (13a) merges directly into the groove (6), and / or that the inclined slot section (13a) runs in a straight line. [8] Floorboard according to claim 6 or 7, characterized by that the slot (13) has a length in the transverse direction of the plank body of 5 to 10 mm. [9] Floorboard according to one of the preceding claims, characterized bythat on the underside of the plank body there is formed a floor surface section (14) which is inclined relative to the support surface (2) of the floorboard and, starting from the side surface (4) of the plank body (1) in which the groove (6) is formed, extends in the transverse direction of the plank body (1) to behind the groove (6) and merges into the support surface (2) of the floorboard. [10] Floorboard according to claim 9 and any one of claims 6 to 8, characterized by that the inclined floor surface section (14) extends into the region of the inclined slot section (13a), in particular ends in its central region in the transverse direction of the floorboard. [11] Floorboard according to claim 10, characterized by that the inclined bottom surface portion (14) runs parallel to the underside of the inclined slot portion (13a). [12] Floorboard according to one of claims 9 to 11, characterized bythat the inclined base surface section (14) is inclined at an angle (γ) of at least 6°, in particular at least 6.5° relative to the support surface (2), wherein the angle is in particular 7° ± 0.2° and preferably 7° ± 0.1°. [13] Floorboard according to one of the preceding claims, characterized bythat on the outside of the locking projection (8) there is formed an inclined surface (15) which is inclined at an angle of at least 40°, preferably 45° ± 0.5° with respect to the support surface (2), the inclination being opposite to that of the holding surface (7a), and that the tenon (9) has a contact surface (17) corresponding to the inclined surface (15), the arrangement being such that the inclined surface (15) of the locking projection (8) of one floorboard and the contact surface (17) and the counter-positioning surface (10b) of the tenon (9) of another floorboard interact to elastically deform the region of the board body (1) located below the groove (6) downwards in the direction of the support surface (2) of the floorboard when the tenon (9) of one floor element is inserted into the groove (6) of the other floor element. [14] Floorboard according to claim 13, characterized bythat a transition surface (16) is formed on the locking projection (8), which connects the holding surface (7b) and the inclined surface (15) to one another and is in particular flat, wherein the transition surface (16) is inclined in the same direction as the inclined surface (15), but has a smaller inclination with respect to the support surface (2) than the inclined surface (15), wherein the angle of inclination (γ) to the support surface (2) is in particular 6 to 8°, preferably 6.8 ± 0.2°. [15] Floorboard according to one of the preceding claims, characterized bythat the arrangement is such that the area of ​​the plank body (1) located below the groove (6) of a floorboard, which is elastically deformed when a tenon (9) of another floorboard is inserted, only partially returns to its original position when two floorboards are connected to one another, so that a vertical holding pressure is exerted on the connection between the locking recess (7) and the locking web (10). [16] A flooring system comprising a plurality of floorboards according to any preceding claim.

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