Floor covering module

Abstract

This utility model relates to the light industry. The flooring module is designed as a parallelogram-shaped panel with a 45° angle between two adjacent walls. The panel is joined along its long side to a similarly shaped panel adjacent to it by joining the panels at a 45° angle on one side of the joint. The panel has side and end walls with contoured cutouts with a profile that ensures a locking connection between the panel and other adjacent panels along the side and end faces. On some walls, the contoured cutout is designed as a groove, while on others, it is designed as a tenon inserted into the groove. The groove on the side wall is a recess in cross-section, with a lower, inclined wall that extends through the bottom portion and an upper, flat, horizontally extended wall of shorter length, into a vertically oriented section of the wall connected to the front surface of the panel.On the end portion of the bottom wall, extending beyond the width of the upper inclined wall, a trapezoidal projection is formed in cross-section. On the other side of the panel, a tongue is formed in the form of a protruding element with a flat lower wall, in which a trapezoidal recess is formed in cross-section. The bottom of this recess, like the smaller base of the trapezoid, is positioned at an angle, and the cavity is designed to accommodate the trapezoidal projection of the bottom wall of the groove, with contact along the inclined wall of the recess and along the surface of its bottom.At the other free end, the protruding element has an inclined wall for engagement with the inclined wall of the groove bottom and a projection oriented toward the front surface of the panel, repeating the shape of the projection on the end portion of the groove's lower flat wall. The surface of the smaller base has an inclination matching the inclination of the upper flat wall for support when the projection on the end portion of the lower flat wall is positioned within the groove recess. On one end wall, a shaped groove in cross-section repeats the shape of the groove in the side wall of the panel. On the other end wall of the panel, a tenon is formed at the top of the panel with a vertically oriented flat section, on which a protruding element is formed with a step in the transition area to this flat section.Under the projection, there is a projection of trapezoidal shape in cross-section, the surface of the smaller base of which is made with an inclination for placement in the recess of the tenon and at a distance from which there is a recess of trapezoidal shape in cross-section for placement of the projection on the end part of the groove. 5 c.p. f-ly, 15 ill.

Description

[0001] The utility model relates to light industry and concerns a device for a panel modular element for floor covering used in a system of floating floor coverings joined by means of a mechanical tongue-and-groove lock.

[0002] Structurally, a flooring module is a rectangular panel, a standard and universal flooring element, made of wood, particleboard, or fiberboard, or multiple layers of varying material structure (composite construction). The panel's face is typically decorated with a finishing material.

[0003] All modern flooring panels are glueless. The panels are connected using a locking mechanism. This locking mechanism on each side of the panel is a tongue-and-groove joint (also known as a tongue-and-groove joint). The grooves and tenons are located on the end faces of the panels. When installing flooring, the panels are connected by inserting the tongue of one panel into the groove of the adjacent panel. The tongue snaps into place when the top layer of one panel is flush with the top layer of the adjacent panel. It is generally believed that flooring is installed once and cannot be disassembled. Because of this, and because the panel material is not resilient and is quite fragile and can crumble and break at the grooves and tenons, the grooves and tenons are shaped so that all elements are pressed against each other when snapped together, preventing the panels from separating.

[0004] The same tongue-and-groove connection is used on the end panels. Panels, for example, can be laid in a classic herringbone pattern. In this case, the panels are joined along their long sides with a partial offset, so that part of the panel extends beyond the adjacent panel, and the short end section is connected to the protruding part of the long side of the other panel. Obviously, with this type of installation, all or part of the panels are not lifted; the connection occurs with the panels lying flat on the base by sliding them until the tongue snaps into the mating groove. Given this modern flooring installation technology, the shape and geometry of the tongue and the shape and geometry of the groove become important.

[0005] The claimed utility model concerns the production of a floor module intended for forming a floor pattern from modules of the herringbone type.

[0006] The prior art discloses a parquet flooring pattern known as a "French herringbone" (also known as "chevron" or "ladder") - a method of laying parquet in which parquet boards are cut at an angle (usually 45° or 60°) and laid end to end, forming a "herringbone" pattern with a clear central axis (Fig. 1).

[0007] Installing herringbone flooring places special demands on the interlocking joints. The main problem is that the vast majority of interlocking systems (such as Lock, Click, and UniClic) are designed for straight-line panel assembly. Interlocks are designed for longitudinal assembly, while herringbone flooring requires angular interlocking. This type of installation is prone to problems with seam separation and interlock failure. Since interlocks are not designed to hold panels at 90°, the joints weaken over time. Changes in humidity and temperature (such as seasonal changes) cause wood or HDF laminate subfloors to expand. In deck installations, interlocks absorb this expansion along one axis. In herringbone flooring, expansion occurs in both directions, leading to joint openings.

[0008] While this is not so critical for the "English herringbone" pattern, since the panels are connected at an angle of 90°, the "French herringbone" pattern requires a connection at 45°, which creates multidirectional loads for which standard locks are not adapted.

[0009] The main drawback of existing solutions lies in the locking mechanism itself. Standard locks (Lock and Click) operate by snapping into place as one panel moves relative to another in a specific direction. When laid in a herringbone pattern, the panels are not connected sequentially (one after another), but simultaneously along two axes.

[0010] For example, Unilin's UniClic locks (US7698868, US7735288) on rectangular panels cannot handle the diagonal loads that occur when joining panels at an angle. As a result, the joints are difficult to assemble and experience internal stress, which sets the stage for future deformations. Due to the angular geometry, the locks experience loads in multiple planes simultaneously, exceeding their design capabilities. Unlike adhesive fixation, a floating floor with locks retains micro-movement. With a herringbone pattern, these micro-movements accumulate, creating a "walking" floor effect. This also applies to Valinge's locking joints (US 8171692, US 11053691, US 8069631, etc.).

[0011] There are known patent sources that disclose the use of rectangular floor panels for laying in an "English herringbone" pattern (US 2008000180, US 2008168730, US 2022064964, US 2024247497). The "English herringbone" connection is achieved by connecting the long side of one panel to the long side of another, and the long side to the short side - this is a forced compensation of the rectangular shape, requiring different types of connections.

[0012] The parallelogram-shaped floor panel concept (for diagonal installation) is not widely represented in patent literature compared to rectangular panels. Most patents describe rectangular panels.

[0013] Thus, a floor covering module is known, which is made in the form of a panel in the form of a parallelogram in plan with an acute angle between two adjacent walls, which along the long side is subject to connection with a panel of the same shape with an adjacent arrangement when connecting the panels at an acute angle on one side of the connection, the panel in the form of a parallelogram in plan is made with side and end walls, in which figured cutouts are made with a profile that provides a locking connection of the panel with other adjacent panels located along the side and end sides, on one side wall the figured cutout is made in the form of a groove, and on the other side wall - in the form of a tenon inserted into the groove (WO 2004063491, E04F15 / 04, published 07.29.2004).

[0014] This decision was made as a prototype due to the matching shapes of the floor covering panels.

[0015] This patent doesn't specify which sides have grooves and which have tenons. It simply states that two types of tongue-and-groove joints can be used to join parallelogram-shaped panels.

[0016] For example, in one type of locking connection (Figs. 2 and 3 of WO 2004063491), on one side of the panel, the groove in cross-section is a recess that has a lower wall with an additional longitudinal recess formed in it on the middle part of the lower horizontal wall of this recess, and a tenon on the other wall is made in a shape corresponding to the shape of the cavity of the recess, that is, it is a horizontally directed projection with another additional projection protruding longitudinally on its lower horizontal wall, the shape of which corresponds to the shape of the additional recess on the lower wall in the groove. In essence, this is a long-known latch, when the tenon is inserted into the groove until the additional projection enters the additional recess.

[0017] Another type of tongue-and-groove locking joint (Figs. 2 and 3 from WO 2004063491) repeats the first type of joint, but has differences in that the lower wall of the tenon is made inclined, and the mating wall in the groove repeats the shape of the lower wall of the tenon.

[0018] These types of floor panel joints are used for rectangular panels. In this case, they work well because the panels are joined along the sides where the applied deformation force is perpendicular to the panel side. However, in a well-known patent, this type of panel joint is used for parallelogram-shaped panels, which are joined along inclined sides. It is known that in this case, the force, coming as a perpendicular force, is decomposed into two component forces, which reduce friction in the joint and create shear displacements in the panels. That is, under load, the panels begin to shift, opening the interlocking joints. Leaks appear at the panel joints.

[0019] This type of locking joint is maintained by inserting the tenon into the groove so that the additional projection on the tenon wall fits into an additional recess in the groove. However, the groove width is chosen to be equal to the tenon thickness, given that the panel material is relatively rigid and lacks elasticity. Therefore, when the tenon is inserted, the projection slides between the groove walls and is partially flattened, worn, or deformed. Consequently, it is not the entire projection that fits into the additional recess, but a portion of it, which does not hold the panels in a sufficiently strong connection. If this type of locking joint is applied to parallelogram-shaped panels, then, when the load force is distributed, one component of this force will constantly act in the direction of the tenon's release from the groove.

[0020] This utility model is aimed at achieving a technical result consisting in increasing the reliability of the locking connection of panels on all sides of the joint with adjacent panels.

[0021] The specified technical result is achieved in that the floor covering module is made in the form of a panel in the shape of a parallelogram in plan with an angle between two adjacent walls of 45°, which along the long side is subject to connection with a panel of the same shape with an adjacent arrangement when connecting the panels at an angle of 45° on one side of the connection, the panel in the shape of a parallelogram in plan is made with side and end walls, in which figured cutouts are made with a profile that ensures a locking connection of the panel with other adjacent panels located along the side and end sides, on one side wall the figured cutout is made in the form of a groove, and on the other side wall - in the form of a tenon inserted into the groove, the groove in cross section is a recess that has a lower inclined wall passing through the bottom part and an upper flat horizontally extended wall of shorter length into a vertically oriented section of the wall,connected to the front surface of the panel, on the end portion of the lower inclined wall, extending beyond the width of the upper inclined wall, a protrusion of a trapezoidal shape in cross-section is made, on the other side of the panel a tenon is made in the form of a protruding element with a lower flat wall, in which a recess of a trapezoidal shape in cross-section is made, the bottom of which, as the smaller base of the trapezoid, is located inclined, and the cavity is intended for placing a protrusion of a trapezoidal shape of the lower wall of the groove with contact along the inclined wall of the recess and along the surface of its bottom, and at the other free end the protruding element is made with an inclined wall for contact when connecting with the inclined wall of the bottom part of the groove and a protrusion oriented towards the front surface of the panel, repeating in shape the protrusion on the end portion of the lower flat wall of the groove, in which the surface of the smaller base has an inclination,coinciding with the slope of the upper flat wall for resting on it when the projection on the end part of the lower flat wall is located in the recess of the tenon, on one end wall the figured cutout is made in the form of a groove, and on the other end wall - in the form of a tenon inserted into the groove, the groove in the cross section repeats the shape of the groove of the side wall of the panel, the tenon on the end wall of the panel is made in the upper part of the panel with a vertically oriented flat section connected with the front surface of the panel and which, when connected to another panel, is used for contact support on the vertically oriented section of the panel being joined and under which a trapezoidal projection is made in the cross section, the surface of the smaller base of which is made with an inclination for placement in the recess of the tenon and at a distance from which a trapezoidal recess is made in the cross section for placing the projection on the end part of the groove,a tenon on the end wall of the panel is made in the upper part of the panel with a vertically oriented flat section connected to the front surface of the panel and which, when connected to another panel, is used for contact support on the vertically oriented section of the panel being connected and on which a protruding element with a step is made in the transition zone to this flat section, which, when connected to another panel, is used for contact support on the upper wall of the groove of the panel being connected and under which a trapezoidal projection in cross-section is made, the surface of the smaller base of which is made with an inclination for placement in the recess of the tenon and at a distance from which a trapezoidal recess in cross-section is made for placement of the projection on the end part of the groove.

[0022] In this case, the surface of the smaller base of the trapezoidal projection of the tenon on the end wall of the panel can be made with an inclination.

[0023] The surface of the smaller base of the trapezoidal tongue protrusion on the end wall of the panel can be made parallel to the front surface of the panel, and the inclined wall of the groove on the long side and the end wall in the area of ​​connection with the protrusion at the free end can be made with a straight section parallel to the front surface of the panel.

[0024] The side wall of the protruding element on the tongue on the end wall of the panel under the step in the transition zone to the vertically oriented flat section can be made with an inclination of 12-17° from the vertical, and the width of this protruding element is 0.3-0.4 mm.

[0025] The surface of the smaller base of the trapezoidal protrusion on the end portion of the lower flat inclined wall of the groove can be inclined in the direction opposite to the bottom portion of the groove recess.

[0026] The specified features are essential and are interconnected to form a stable set of essential features sufficient to obtain the required technical result.

[0027] This utility model is explained using a specific example of implementation, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the required technical result.

[0028] This utility model is illustrated by the following figures:

[0029] Fig. 1 - example of assembling two rows of French herringbone flooring from the corner of a room (state of the art);

[0030] Fig. 2 - the same as in Fig. 1, “chevron” variant (prior art);

[0031] Fig. 3 - floor covering of the "English herringbone" or "Hungarian herringbone" type (prior art);

[0032] Fig. 4 - plan shape and arrangement of modular elements according to the utility model;

[0033] Fig. 5 - shapes of the end walls of the modular element according to the utility model; Fig. 6 - butt joint of the end sides using the "tongue and groove" type; Fig. 7 - butt joint of the long sides of the panel using the "longitudinal tongue and groove" type; Fig. 8 - butt joint of the end side with the long side using the "tongue and groove" type:

[0034] Fig. 9 - butt joint of the end side with the long side using the “groove-longitudinal tenon” type:

[0035] Fig. 10 - the first example of laying a floor covering from panels according to the present utility model;

[0036] Fig. 11 - the second example of laying a floor covering from panels according to the present utility model;

[0037] Fig. 12 - the third example of laying a floor covering from panels according to the present utility model;

[0038] Fig. 13 - the fourth example of laying a floor covering from panels according to the present utility model;

[0039] Fig. 14 - the fifth example of laying a floor covering from panels according to the present utility model;

[0040] Fig. 15 - sixth example of laying floor covering from panels according to this utility model.

[0041] Directly copying a locking system from a rectangular panel to a parallelogram panel may be impossible or impractical due to changes in the joint angles. The potential novelty of our solution lies not in creating an entirely new type of lock (as the fundamental latching principles are already protected by patents from Valinge, Unilin, and others), but in adapting and combining existing technical solutions for use on panels with non-orthogonal edges.

[0042] The main difference between the claimed solution and the prior art lies in the geometric parameters of the lock, designed for angles other than 90° between adjacent edges. Specifically, this applies to the angles of the locking surfaces, the depth of the grooves, and the shape of the tongues to ensure a tight fit and secure fixation along the entire perimeter of the panel. The locking system is specifically designed for joining panels in a parallelogram shape (at an acute or obtuse angle), and utilizes a mechanism that solves the technical problems inherent to such angular joints (e.g., seam divergence and difficulty snapping into place).

[0043] In general, the constructive algorithm of the claimed solution is built according to the following scheme:

[0044] - floor panels are made in the shape of a parallelogram in plan with an angle between two adjacent walls of 45°, which along the long side is to be connected to a panel of the same shape with an adjacent location when connecting the panels at an angle of 45° on one side of the connection;

[0045] - each panel is made with side and end walls, in which figured cutouts are made with a profile that provides a locking connection of the panel with other adjacent panels along the side and end sides;

[0046] - on one side wall the figured cutout is made in the form of a groove, and on the other side wall it is made in the form of a tenon inserted into the groove;

[0047] the groove in the side wall in cross section is a recess that has a lower inclined wall, which through the bottom part passing along the inclined wall, of a shorter length, into a vertically oriented section of the wall associated with the front surface of the panel,

[0048] - on the end part of the lower flat wall of the groove, extending beyond the width of the upper inclined wall, a protrusion of a trapezoidal shape in cross section is made, the surface of the smaller base of which is inclined opposite to the inclination of the upper flat wall of the groove;

[0049] - on the other side of the panel, a tenon is made in the form of a protruding element with a lower flat wall, in which a recess of a trapezoidal shape is made in the cross-section, the bottom of which, as a smaller base of the trapezoid, is located inclined, and the cavity is intended to accommodate a protrusion of a trapezoidal shape of the lower wall of the groove with contact along the inclined wall of the recess and along the surface of its bottom;

[0050] - at the other free end, the protruding element is made with an inclined wall for contact when connecting with the inclined wall of the bottom part of the groove and a projection oriented towards the front surface of the panel, repeating in shape the projection on the end part of the lower flat wall of the groove, in which the surface of the smaller base has an inclination that coincides with the inclination of the upper flat wall for resting on it when the projection is located on the end part of the lower flat wall in the recess of the tenon,

[0051] - on one end wall the figured cutout is made in the form of a groove, and on the other end wall - in the form of a tenon inserted into the groove;

[0052] - the groove on the end wall in cross section repeats the shape of the groove on the side wall of the panel;

[0053] - a tenon on the end wall of the panel is made in the upper part of the panel with a vertically oriented flat section connected to the front surface of the panel and which, when connected to another panel, is used for contact support on the vertically oriented section of the panel being connected and on which a protruding element with a step is made in the transition zone to this flat section, which, when connected to another panel, is used for contact support on the upper wall of the groove of the panel being connected and under which a trapezoidal protrusion in cross-section is made, the surface of the smaller base of which is made with an inclination for placement in the recess of the tenon and at a distance from which a trapezoidal recess in cross-section is made for placement of the protrusion on the end part of the groove.

[0054] As can be seen, the locking joints have a peculiarity in that the contact of the groove and tenon surfaces occurs along inclined walls, the slope of which decreases towards the bottom of the groove and does not allow the mating part of the tenon to shift towards the separation of the panels.

[0055] The panel has a parallelogram shape in plan with an angle of 45° between two adjacent walls and can be made of wood or chipboard or wood-fiber material, or be a composite consisting of several layers that differ in material structure.

[0056] The prefabricated floor panel (Fig. 4) consists of a plate 1 with a groove 2 running along one long side along its entire length, and a tongue 3 on the other side, which can also be called a tongue. As shown in Fig. 4, the panels are connected to each other only when the corners of the panels are adjacent and at an angle of 45°.

[0057] A panel can be joined to another panel along its long sides, or end-on to one long side of another panel, or end-on to another long side of the same or another panel (Figs. 12-15). Therefore, all notches on the long and end sides of the panel are designed with their placement within each other in mind. All notch shapes are considered in relation to their cross-sections. The length of each notch is equal to the length of the side on which it is made and has a constant cross-section.

[0058] On one long side of the panel, a figured cutout is made in the form of a groove 2, and on the other long side, in the form of a protruding tenon 3.

[0059] Groove 2 in cross-section is a recess (Fig. 5) extended in the body of the plate along its width and which has a lower inclined flat wall 4, which through the bottom part passes into an upper flat horizontally extended wall 5, which ends with a vertically oriented flat end wall 6 and which is made with a width smaller than the width of the lower inclined wall 4.

[0060] At the end part of the lower inclined wall 4, extending beyond the width of the upper flat wall 5, a protrusion 7 of a trapezoidal shape in cross-section is formed, the surface 8 of the smaller base of which is preferably inclined in the direction opposite to the bottom part of the groove recess.

[0061] The bottom of the groove recess is rounded, consisting of several smoothly blending sections with varying rounding radii. The flat section on the top wall 5 is parallel to the surface of the panel's front side.

[0062] On the other long side of the panel, a figured cutout is made, called a tongue / tongue (Fig. 5). This tongue 3 is made in the body of the plate and represents a protruding element 9 with a lower wall 10 for contact when connecting with an inclined wall 4 of the groove, in which, in the area of ​​​​mating with the bottom wall, a recess 11 of a trapezoidal shape in cross-section is made, the bottom 12 of which, as a smaller base of the trapezoid, is located parallel to the front surface of the panel, and the cavity is intended to accommodate a protrusion 7 of a trapezoidal shape of the lower wall of the groove with contact along the inclined wall 13 of the recess. At the free end, the protruding element is made with a projection 14 oriented towards the front surface of the panel, used to rest the tongue against the upper flat wall 5 when the protrusion 14 is located in the recess of the groove (Fig. 5).

[0063] The peculiarity of the execution of the mechanism for connecting the panels together is that all the panels are laid from top to bottom without tilting, that is, each panel to be connected is placed on top of the elements of the curly cutouts.

[0064] When connecting two panels along the long sides (Fig. 7), the protruding element 9 is inserted into the groove between the walls 4 and 5 of the groove and is pushed to the bottom of this groove, sliding along the surfaces of the lower wall 4, as if along a guide. The protruding element 9 reaches the bottom of the groove and with its inclined wall 10 rests against the inclined wall 4 of the groove, while the projection 14 with its smaller inclined base comes into contact with the surface of the upper wall 5, and rests against these inclined surfaces.

[0065] At this point, projection 7 on the bottom wall of the groove enters recess 12, where it is recessed and its inclined walls contact the inclined walls of recess 12. This arrangement results in clamping along the inclined surfaces of the projection in the recess. When the projection enters the recess, self-alignment occurs, increasing the pressure on the contacting walls in the groove, enhancing the wedge-like clamping effect. Since the inclined contact surfaces at the locations of projections 7 and 14 have opposite angles of inclination, a spreading action occurs, preventing the projections from leaving their seats. This process automatically eliminates gaps due to the self-aligning fit of projection 7 in the recess. Clearance elimination is complete when the end walls come into contact with each other.

[0066] The groove 15 profile cutout on one end wall of each panel is made with the same profile and design (Fig. 5), repeating the design of groove 2 used for the long side wall. This groove is used for connecting with the profiles on the side faces of the plate (Fig. 9) and for connecting with the tongue on the other end face (Fig. 6). In this case, the end connection takes place in a position where the panel to which it is being connected is already connected to another panel and lies flat on the floor base. In this regard, when connecting at the ends, the panel being connected is simply lowered onto the elements of the profile cutouts of the lying panel.

[0067] On each end wall of the panel, a shaped cutout is made in the upper part of the panel with a vertically oriented flat end wall, which, when connected to another panel, is used for contact support on the vertically oriented end wall of the attached panel.

[0068] On the other end wall, a tenon 16 is made in the upper part of the panel with a vertically oriented flat section 17 connected to the front surface of the panel and which, when connected to another panel, is used for contact support on the vertically oriented section of the panel being connected and under which a projection 18 of a trapezoidal shape in cross-section is made, the surface of the smaller base of which is made for placement in the recess of the groove 15 and at a distance from which a recess 19 of a trapezoidal shape in cross-section is made for placing the projection on the end part of the groove.

[0069] The surface of the smaller base of the trapezoidal protrusion 18 can be made inclined.

[0070] The inclined wall 4 of groove 2 on the long side or groove 15 on the end walls in the area of ​​connection with protrusion 7 at the free end can be formed with a straight section parallel to the front surface of the panel. In this case, the surface of the smaller base of the trapezoidal protrusion 18 on the end side is also formed parallel to the front surface of the panel.

[0071] At the same time, on the vertically oriented flat section of the tongue 16, connected to the front surface of the panel, a protruding element 20 (Figs. 10 and 11) is formed with a step 21 in the transition zone to this flat section, which, when connected to another panel, is used for contact support on the upper wall of the groove of the panel being connected. When the vertical sections of the panels are closed, the protruding element 20 rests against the upper wall 5 of the groove, preventing any displacement of the panels in the vertical direction.

[0072] Due to the narrow width of this protruding element 20 (0.3-0.4 mm) and the inclination (12°-17° from the vertical) of its front wall, when joining panels, it slides along the vertical wall of the groove 6. This allows for assembly in which, when joining at the ends, the panel being joined is simply lowered onto the profile cutouts of the adjacent panel. When joining panels, due to the support of this protrusion and protrusion 18, the tenon on the end face is clamped in the groove from multiple sides, preventing its vertical displacement.

[0073] When joining one end wall of a panel to the edge of another panel along the long side (Fig. 8) bearing the tongue, the panel being joined is positioned end-to-end with the previously installed panel and lowered downwards so that the projection 18 fits into the groove and descends along the inclined walls of the recess until it contacts the inclined surfaces. The trapezoidal projection of the tongue enters the recess, which also has a trapezoidal cross-section. When the panel shrinks into the recess, the end walls close under pressure, eliminating the gap, causing the joint to function as a wedge mechanism.

[0074] Thus, when laying parallelogram-shaped panels in plan, each panel is fixed in the shaped cutouts of adjacent panels both along the long sides and along the end sides.

[0075] The locking structures used in this utility model possess high adhesion and are virtually inseparable. The locking mechanism operates through the contact between the inclined walls of a protrusion and a recess. The friction generated at the contact surface of the protrusion and recess, both made of fibrous material, is significantly high and is represented on the contact surface as a resultant force acting along the plane of contact. On this plane, this force is resolved into a vertical component (a parasitic force that does not contribute to the disengagement of the lock) and a horizontal force that presses the contacting surfaces of the inclined walls together. Both forces are less in magnitude than the resultant force. Therefore, the action of the horizontal force prevents the protrusion from exiting the recess. This prevents any displacement of the panels during the installation of the flooring.

Claims

1. A floor covering module characterized in that it is made in the form of a parallelogram-shaped panel in plan with an angle between two adjacent walls of 45°, which is to be connected along the long side with a similarly shaped panel with an adjacent arrangement when connecting the panels at an angle of 45° on one side of the connection, the parallelogram-shaped panel in plan is made with side and end walls in which shaped cutouts are made with a profile that ensures a locking connection of the panel with other adjacent panels located along the side and end sides, on one side wall the shaped cutout is made in the form of a groove, and on the other side wall - in the form of a tenon inserted into the groove, the groove in cross section is a recess that has a lower inclined wall that passes through the bottom part and an upper flat horizontally extended wall of shorter length into a vertically oriented section of the wall connected to the front surface of the panel,on the end portion of the lower inclined wall extending beyond the width of the upper inclined wall, a protrusion of trapezoidal shape in cross-section is made, on the other side of the panel a tenon is made in the form of a protruding element with a lower flat wall, in which a recess of trapezoidal shape in cross-section is made, the bottom of which, as the smaller base of the trapezoid, is located inclined, and the cavity is intended for accommodating a protrusion of trapezoidal shape of the lower wall of the groove with contact along the inclined wall of the recess and along the surface of its bottom, and at the other free end the protruding element is made with an inclined wall for contact when connecting with the inclined wall of the bottom part of the groove and a protrusion oriented towards the front surface of the panel, repeating in shape the protrusion on the end portion of the lower flat wall of the groove, in which the surface of the smaller base has an inclination,coinciding with the slope of the upper flat wall for resting on it when the projection on the end part of the lower flat wall is located in the recess of the tenon, on one end wall the figured cutout is made in the form of a groove, and on the other end wall - in the form of a tenon inserted into the groove, the groove in the cross section repeats the shape of the groove of the side wall of the panel, the tenon on the end wall of the panel is made in the upper part of the panel with a vertically oriented flat section connected with the front surface of the panel and which, when connected to another panel, is used for contact resting on the vertically oriented section of the panel being joined and under which a trapezoidal projection is made in the cross section, the surface of the smaller base of which is made with an inclination for placement in the recess of the tenon and at a distance from which a trapezoidal recess is made in the cross section for placing the projection on the end part of the groove,a tenon on the end wall of the panel is made in the upper part of the panel with a vertically oriented flat section connected to the front surface of the panel and which, when connected to another panel, is used for contact support on the vertically oriented section of the panel being connected and on which a protruding element with a step is made in the transition zone to this flat section, which, when connected to another panel, is used for contact support on the upper wall of the groove of the panel being connected and under which a trapezoidal projection in cross-section is made, the surface of the smaller base of which is made with an inclination for placement in the recess of the tenon and at a distance from which a trapezoidal recess in cross-section is made for placement of the projection on the end part of the groove.

2. A floor covering module according to paragraph 1, characterized in that the surface of the smaller base of the trapezoidal tongue protrusion on the end wall of the panel is made with an inclination.

3. A floor covering module according to claim 1, characterized in that the surface of the smaller base of the trapezoidal tongue protrusion on the end wall of the panel is made parallel to the front surface of the panel, and the inclined wall of the groove on the long side and the end wall in the area of ​​connection with the protrusion at the free end is made with a rectilinear section parallel to the front surface of the panel.

4. A floor covering module according to paragraph 1, characterized in that the side wall of the protruding element on the tongue on the end wall of the panel under the step in the transition zone to the vertically oriented flat section is made with an inclination.

5. A floor covering module according to paragraph 4, characterized in that the side wall of the protruding element on the tongue on the end wall of the panel under the step in the transition zone to the vertically oriented flat section is made with an inclination of 12-17 degrees from the vertical, and the width of this protruding element is 0.3-0.4 mm.

6. A floor covering module according to claim 1, characterized in that the surface of the smaller base of the trapezoidal protrusion on the end portion of the lower flat inclined wall of the groove is inclined in the direction opposite to the bottom portion of the groove recess.

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