Thin rectangular covering board intended for installation in a herringbone pattern

Abstract

The invention relates to a board (1) of which the two short sides have combined profiles (FX), symmetrical in a plane, superimposing a groove (RP) and a tongue (LP), one of the long sides has a groove (RG) and the other has a tongue (LG) of which the shapes and positions are equivalent to the respective shapes and positions of the groove (RP) and the tongue (LP) of the combined profile (FX), the assembly of one board (1) to be installed with the two adjacent boards (1) of a set of boards installed in a herringbone pattern being carried out by simple tilting of the long side of the board to be installed by inserting its tongue into one or more grooves (RG, RP), aligned on a long side or a short side of installed boards and simultaneous assembly of the short side (FX) (RP, LP) with the side of another installed board.

Description

[0001] DESCRIPTION

[0002] Title: Thin rectangular covering intended for herringbone installation

[0003] FIELD OF THE INVENTION

[0004] The present invention relates to a thin rectangular PVC cladding blade intended for herringbone installation, according to which the line of HDF blades has a zigzag pattern of successive blades at right angles, each blade in the line being connected by its small side to the large side of the following blade; upstream or downstream, the blade having a pair of large sides and a pair of small sides, each pair of sides consisting of complementary profiles which can be assembled: one of the large sides having a groove and the other side a tongue for assembly by engagement and tilting of the tongue in the groove of the side of another blade, the small sides having one a grooved profile and the other side, a hooking profile for assembly to a grooved side by tilting the blade.

[0005] The term HDF blade refers to a blade made from high-density fiberboard.

[0006] STATE OF THE ART

[0007] Many types of covering blade are already known with pairs of opposite sides, one having a tongue, the other a groove so as to allow engagement by tilting of one blade into the other, the small sides being assembled by simple interlocking achieved by the tilting movement of the blade being laid relative to the blades already laid.

[0008] However, these blades do not allow for a broken stick pose.

[0009] Also known, according to document DE 202019101603 U1, is a blade intended for laying in a herringbone pattern. However, this structure is relatively complex, as the laying of a blade is done in two movements, a tilting movement as with the blades described above followed by a sliding movement to fit the small side of the blade to be laid into the large side of another blade already laid.

[0010] This double movement complicates and considerably slows down the installation operations.

[0011] PURPOSE OF THE INVENTION The aim of the present invention is to develop a rectangular covering strip, in particular a floor covering using a herringbone pattern, allowing installation by tilting the strip to be installed relative to a laid strip, at the same time providing a connection on the other side with another strip installed using a herringbone pattern.

[0012] DISCLOSURE AND ADVANTAGES OF THE INVENTION To this end, the invention relates to a rectangular blade of the type defined above, characterized in that A) the two short sides have combined profiles, symmetrical in plan, superimposing a groove and a tongue, B) one of the long sides has a groove and the other, a tongue whose shapes and positions are homologous to the respective shapes and positions of the groove and the tongue of the combined profile, C) the assembly of a blade to be laid to the two adjacent blades of a set of blades laid in a herringbone pattern being done by a single tilting of the long side of the blade to be laid by the engagement of its tongue in one or more grooves, aligned on a long side or a short side of laid blades and simultaneous assembly of the short side with the side of another laid blade.

[0013] The blade according to the invention allows, facilitates and simplifies the herringbone installation without the installer having to worry about the direction of the blade to be installed since the short sides are symmetrical and compatible with any long side.

[0014] The laying movement is done simply by tilting one tongued side (long side) in relation to one grooved side (long or short side). This tilting movement thus assembles one short side with the long side of the next board and assembles it in the joining plane. The laying of the board is not limited to a "herringbone" pattern and can also be done in a "ladder" pattern where the two "uprights" are formed by two lines of boards assembled by their short side and where the "rungs" are formed by a stack of boards assembled together by their long sides and to the "uprights" by their short side. The assembly of the boards is held in place in the plane according to the directions of the sides and in the vertical direction, perpendicular to the plane of the boards.This hold is guaranteed by the contact surfaces having different orientations and in particular the tops of the tongue, of the tongue side or of the cavity of the profile of the short side and the top of the cavity of the long groove side have respective surfaces formed at least largely by a horizontal surface at the same distance from the top of the laid blade.

[0015] This standardization of the bearing surface facilitates the production of the profiles and their complementarity. More particularly, the large side has a tongue having beyond the joining plane comprising: a locking top, a rounded nose, an auxiliary bottom inclined downwards, a front ramp and a front recess, the top of which forms a front support and the other large side has a groove, below the joining plane comprising: a cavity with the top surface forming a locking support, horizontal, at the determined distance from the top of the blade, a rounded bottom, a lower side, inclined downwards with a clamping strip and the small side has a groove, below the joining plane comprising: a cavity with a top forming a support top continuing with a bottom, an inclined clamping surface and a ramp forming a convex dihedron with the clamping surface, a top of the head of the tongue forming the lower contour of the cavity,the groove on the large side receiving the tongue on a large side protruding from the joining plane for the support coming against the locking support and the front bottom coming against the lower side, the groove on a small side receiving the tongue by the support coming against the support top, the front bottom coming against the clamping surface, the front ramp coming against the ramp, the front support coming against the top, and the bottom support coming against the bottom support.,

[0016] This interlocking of the side profiles guarantees their assembly and hold without complicating either manufacturing or installation.

[0017] The profile of the sides of the blade is advantageously completed in that the groove of the large side, beyond the joining plane, comprises: a clamping strip in the extension of the lower side, a rear ramp forming with the clamping strip, a concave dihedron in the extension of the side beyond the joining plane; the tongue of the large side, below the joining plane, comprises: a rear clamping surface extending by: a clamping ramp forming with the clamping surface a convex dihedron extending by a cavity, the tongue of the side also coming against the cavity of the side by its rear clamping surface against the clamping strip and by its rear ramp against the rear ramp, leaving the top of the head clear in its rear recess, the tongue thus being clamped by its contact surfaces against the corresponding and homologous contact surfaces of the groove of the large side.

[0018] The assembly made by the long sides is thus completed and reinforced by this very particular herringbone installation while allowing it to be combined with the installation of parallel slats.

[0019] The engagement of the large tongue side into a small side is facilitated in that the groove cavity of the small side is connected to the high support by an entry ramp, preferably inclined at 45°, to guide the tilting engagement of the tongue into the cavity.

[0020] The holding is completed in that the tongue has a low support in the form of a surface inclined outwards and downwards, straddling the joining plane, and the head of the tongue bordering and forming the lower side of the groove cavity has a low support in the form of a surface inclined downwards and inwards, straddling the joining plane to cooperate with the low support of the tongue.

[0021] It should also be noted that, on the one hand, the dihedral and the top of the head of the extension of the side and on the other hand, the dihedral and the low support of the short side are symmetrical with respect to the junction plane.

[0022] According to another advantageous characteristic, to complete, in certain cases the vertical attachment of the sides, the upper support of the large sides has a attachment cavity and the upper support of the small sides has a attachment beak cooperating with the attachment notch of the respective large side to which this small side is assembled.

[0023] The blade according to the invention has been presented above as a rectangular blade since the herringbone installation would not be of interest for square blades, but this rectangular shape also includes blades obtained by a geometric deformation such as an affine transformation which transforms the rectangular blade into a parallelogram retaining all the properties of the profiles of the sides and thus allowing a herringbone installation whose outline is zigzag according to non-right angles; this also allows the installation in parallel blades and in particular in a herringbone pattern.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be described below in more detail using an embodiment of a rectangular covering blade allowing the herringbone installation shown in the attached drawings in which:

[0026] [Fig. 1] schematic plan view of a blade according to the invention,

[0027] [Fig. 2] diagram of the blade laying in a herringbone pattern, highlighting the profile of the large assembled sides,

[0028] [Fig. 3] cross-sectional view of a blade according to the invention showing the profile of the long sides,

[0029] [Fig. 4] Longitudinal sectional view of a blade showing the profile of the short sides,

[0030] [Fig. 5A] schematic sectional view of the assembly of two blades by their long sides, [Fig. 5B] schematic sectional view of the assembly of a long side with a tongue and a short side,

[0031] [Fig. 5C] schematic sectional view of the assembly of a small side to a large grooved side,

[0032] [Fig. 6] schematic view showing the assembly of a large tongue side and a large groove side superimposed on a small side, [Fig. 7] diagram of the assembly of the large side of two blades to the two small sides of a blade in an intermediate position,

[0033] [Fig. 8A] diagram of the engagement of the tongue of a large side in the groove of a large side,

[0034] [Fig. 8B] assembly made by tilting according to figure 8A, [Fig. 9A] diagram of the engagement of the tongue of a large side in the groove of a small side by a tilting movement, [Fig. 9B] assembly resulting from the tilting engagement of figure 9 A,

[0035] [Fig. 10A] sectional view of a variant of the bearing surface of the long sides,

[0036] [Fig. 1OB] variant of the support surface of the short sides cooperating with the variant of the support surface of the long sides.

[0037] DESCRIPTION OF AN EMBODIMENT OF THE INVENTION

[0038] According to Figure 1, the invention relates to a covering blade 1, in particular for flooring, of rectangular shape intended for laying in a herringbone pattern (Figure 2); according to this laying pattern, the blades are assembled, for example, to each other by tilting the large tongue side around the large groove side of the penultimate blade ln-2 already laid and imbrication by the shape of the small side in the large side of the last blade ln-1 already laid, in the event of a progression of the laying presented by only two rows of blades thus imbricate. The laying can also be done by progressing on an identical front of all the columns of blades.

[0039] To allow this installation, the blades include, according to figure 1:

[0040] - two large sides having over their entire length, one an RG groove and the other an LG tongue,

[0041] - two small sides of the same FX profile. These two FX profiles are plane symmetrical. An example of an FX profile is given in Figure 4. The large sides can be assembled by their grooves and tongues.

[0042] The FX combined profile superimposes the function of the groove RG and that of the tongue LG so that a short side can be assembled indifferently to either of the two long sides of a board. The function of the groove RP and that of the tongue LP of the short side are integrated in the same FX combined profile and are used automatically when assembling the short side to either of the two long sides by the assembly movement by engaging the tongue LG of the board to be installed in the groove RG of the long side of a board ln-1 already installed and tilting around the hinge thus formed to assemble by this movement also a short side to the long side of a board ln-2 already installed previously in the laying line of the boards 1a, 1b, 1c concerned by this installation. The laying pattern (broken stick) is composed of a succession of zigzag lines like line 1 underlined by gray hatching in figure 2.In this drawing chosen as an example, the blades 1 are joined at right angles (la, 1b, le), the small side of the blade la being joined to the large side of the following blade 1b, the other large side of which receives the small side of the following blade le.

[0043] This analysis of the herringbone laying pattern consists of considering the assembly of the zigzag line following that of line 1 laid by the joining of the long sides along their length left free by the short sides of the previous line. The progression of the laying is presented using the line ln-1 already laid, the progression being made in this example from right to left, the pattern being completed from bottom to top according to the orientation of figure 2.

[0044] In line In, the lan blade is already placed; the next Ibn blade is placed by engaging the tongue on its LG side in the part left free of the groove on the RG side of the lbn-1 blade and the small RP side of the lan blade.

[0045] The tilting of the Ibn blade engages its small side in the large side of the lcn-1 blade.

[0046] To facilitate and simplify the detailed presentation of the structure of blade 1, the following abbreviated terms will be used by convention:

[0047] - RG side: abbreviation of the expression: large side with the RG groove

[0048] - LG side: abbreviation of the expression: large side with the LG tab

[0049] - RP side: abbreviation of the expression: small side with the RP groove

[0050] - LP side: abbreviation of the expression: small side with the tongue. FX profile: combined profile, superimposing the RP and LP functions. RG function: groove function of the long side.

[0051] LG function: long side tongue function RP function: short side groove function LP function: short side tongue function.

[0052] These simplified, undeveloped expressions will also be used in the claims. In the figures the direction (x) is the longitudinal direction of a blade 1, (y) its transverse direction and (z) the direction perpendicular to the surface of the blade.

[0053] According to figure 1, the LG tongue is represented by a broken line and the RG groove by a continuous line.

[0054] The combined FX profile of the two short sides has not been indicated by a particular line since it integrates the two RP and LP functions on each short side.

[0055] Figure 3 shows a blade 1 with, in cross section, an embodiment of the profile of the two long sides, i.e. the RG side and the LG side.

[0056] The blade 1 has a top A and a bottom B. Its side RG has a groove profile comprising from top to bottom, a high support 11 in the junction plane PJ perpendicular to the surface of the top A. It continues with a cavity 13 forming the assembly groove extending along the long side and receiving the tongue of another blade; the upper side of the cavity 13 forms a locking support 131 joining the upper support 11 by a fillet 1311. The support 131, substantially flat, is horizontal at the distance (d) from the top A. This support 131 is joined by a rounded bottom 132, the lower side 133 sloping downward with a flat surface forming a clamping strip 14 joining a rear ramp 15 which is also flat to thus constitute a concave dihedral in the projection 12 of the blade 1 bordering the underside of the cavity 13. The projection 12 ends with a rear head 16, the top 17 of which forms a support and the underside ends with a truncated edge 121.The clamping strip 14 and the rear head 16 with the ramp 15 and the top 17 are beyond the junction plane PJ.

[0057] The LG side of the blade 1 must be able to be assembled by a connection by shape with the large side RG and a small side FX taken in its function RP; the LG side has a shape complementary and homologous to both those of the RG side and the RP side as shown in the following figures. The LG side with a profile complementary to the RG side, has a high support 21 defining its junction plane PJ and continuing towards the bottom B by a locking tab 23. The upper side of the tab 23 forms a substantially horizontal locking top at a distance (d) from the top A; it continues with a rounded nose 233 and. a bottom having the shape complementary to both that of the large side LG and that of the RP side.The front underside 234 forms with a front ramp 235 a convex dihedron continuing with a front recess 236 delimited by the top forming a front support 237 and a side forming a low support 238 joining a rear clamping surface 24 and a clamping ramp 25 which also form a convex dihedron. Beyond the convex dihedron (24, 25) the blade 1 has a rear recess 27 delimited by the ramp 25 and the top 26. The recess 27 joins the underside B by a truncated edge 121.

[0058] Figure 4 shows the section of blade 1 in the longitudinal direction showing the combined profile FX on both short sides. This profile is plane symmetrical for both short sides. Since the shape of the combined profile on the right and that of the profile on the left are symmetrically the same, the description of the combined profile FX will be made with the appropriate numerical references, separately on the right side for the groove function RP and on the left side for the locking tab function LP.

[0059] The combined profile FX consists of the groove profile RP at the top and below it, the tongue profile LP; the profile FX does not protrude beyond the junction plane PJ bordering the two short sides.

[0060] The RP side (i.e. the RP function of the small side) has a profile starting from the top A of the blade and comprising, in addition to a possible fillet provided here and not referenced, a high support 31 continuing in the downward direction by an entry ramp 332 arriving in a cavity 33 forming the groove to receive the tongue of a large side or of a small side as will be described later.

[0061] The top of the cavity 33 has a substantially horizontal support top 331, at the distance (d) from the top A of the blade 1. The contour of the cavity 33 is complementary and homologous to that of the part of the tongue 23 on the LG side extending beyond the junction plane PJ and of the tongue 43 on the LP side below the junction plane PJ.

[0062] The profile continues beyond the support top 331 by a curved bottom 333 receiving the front end of the tongues and a clamping surface 334 descending towards a ramp 335 in the shape of a concave dihedral; the profile rises on the top 336 of the locking head 34 and descends by an inclined face forming a low support 337 set back from the junction plane PJ or straddling it.

[0063] The LP side (i.e. the LP function of the short side) has a tongue profile below the groove profile by being combined with it; the LP tongue delimits by the top of its body 43 the bottom of the cavity 33 forming the groove RG. The LP function of the PX profile includes the high support 31 as well as the low support 337 of the head 34 common to the cavity 33 and to the tongue body 43.

[0064] For its attachment to another blade, the tongue 43 has an inclined front auxiliary underside 433 forming with an auxiliary ramp 434, two at least substantially flat surfaces constituting a convex dihedron 433, 434 facilitating the engagement of the tongue LP in a groove RG or RP. Beyond the dihedron (433, 434), the underside has an auxiliary support 435 to rest on the head 16 of the groove RG. The wall 436 delimiting the recess 44 under the tongue 43 joins the underside B by a truncated edge 121.In summary, the combined profile FX of the short side (RP, LP) described above superimposes the cavity 33 and the tongue 43; the sides LG and RG have complementary and homologous shapes of the shapes of the sides LP and RP: this means that the complementary shapes are geometric shapes superimposable for their functional part of groove and tongue and they are positioned so as to superimpose by their contour when the corresponding side of a blade is assembled to a grooved side of another laid blade, the top and bottom bearing surfaces and those of the profiles RG, LG, RP, LP being in contact and blocking the assembly in the horizontal directions (x,y) and the vertical direction (z).

[0065] Figures 5A-C show the different possible assemblies.

[0066] Figure 5A shows the assembly between the large side RG of a blade 1 and the large side LG of another blade 1', obtained by tilting the blade 1' with the engagement of its LG side in the RG side of the blade 1 already installed.

[0067] The RG / LG sides assembled by their form connection make the following contacts:

[0068] RG

[0069] - high support 1 1

[0070] - locking support 131

[0071] - clamping band 14 - rear ramp 25 / 15

[0072] LG

[0073] - high support 21

[0074] - locking top 231 - clamping surface 24 - ramp 25 front.

[0075] The four contact surfaces lock the assembly against lifting and crushing (+-z directions) and opening in the PJ junction plane (+-x directions).

[0076] Figure 5B shows the assembly of a large side LG to a small side RP by the tab 23 in the cavity 33.

[0077] The contacts between the two RP / LG ​​parts are located on one side of the PJ junction plane, by engagement and tilting.

[0078] The contact surfaces are as follows:

[0079] RP

[0080] - high support 31

[0081] - support top 331

[0082] - rear clamping band 14

[0083] - ramp 335

[0084] - above 335

[0085] - low support 336

[0086] LG

[0087] - high support 21

[0088] - locking top 231

[0089] - auxiliary bottom 234

[0090] - front ramp 235

[0091] - front support 236

[0092] - low support 238

[0093] The RP / LG ​​assembly is stabilized by contact 11 / 31 in the upper part and the interlocking of the tab 43 with the extension 12 resting on the ground.

[0094] The vertical forces (z) are transmitted by the body of the blade 1' to the tongue 43, bypassing the cavity 33, to come onto the non-deformable support constituted by the extension 12.

[0095] This RP / LG ​​assembly is all the more stable since its length is limited to the length of the tab 43 in the longitudinal direction (x) of the RG side to which it is connected. The local strength of this assembly in the (x) and (z) directions is reinforced by the longitudinal and transverse assembly lines extending this assembly. Figure 5C shows the assembly of the LP side (FX) to the RG side by the tilting of the large side 1' by its LG tab around the large side RG of a blade 1 already installed.

[0096] The assembly is carried out by the downward movement of the LP side of the blade 1' in the junction plane PJ. The lower support 336, straddling the junction plane, retracts relative to the upper support 11 of the blade 1.

[0097] During the downward movement of the LP side of the blade 1' in the junction plane PJ, the low support 336, straddling the junction plane, retracts relative to the high support 11 of the blade 1.

[0098] It should be emphasized that in the herringbone assembly (see figure 2) the support of the tongue 23 in the cavity 33, the top of which is part of the tongue 43 protruding cantilevered from the short side, corresponds only to a fraction of the length of the tongue, the remainder of the length of the tongue 23 resting in the cavity 13 of a groove RG, the thickness of the extension 12 of which delimiting the groove RG rests on the ground.

[0099] The surfaces in contact are then as follows:

[0100] RG

[0101] High support 11

[0102] Rear clamping band 14

[0103] Rear ramp 15

[0104] Rear auxiliary support 17

[0105] LP high support 31 below 433 base ramp 434 base support 435

[0106] The angle of the ramps, namely ramp 15 on the RG side, rear ramp 25 on the LG side, front ramp 235 on the LG side, ramp 335 on the RP side and front ramp 434 on the LP side is an angle relative to the horizontal direction, i.e. to the top surface A, within a range of 45° to 60° depending on the tightening to be carried out depending on the thickness and other parameters.

[0107] Figure 6 shows in the same drawing, the superposition of the profile of the LG side and its tongue 3 with the profiles RP and RG. The intersection PO of the contact line of the clamping strip 14 and the clamping surface 24 with the junction plane PJ is the origin of the symmetry of the profile part (24, 25) of the LG tongue of the (-PJ) side of the plane of the drawing with respect to the line of the junction plane PJ or more precisely of the surfaces 14, 15 of the extension 12 of the groove RG and of the part comprising the bottom 438, 434 of the tongue 43 and the base support 435 (intended to come on the top 17 of the head 16).

[0108] This figure 6 also highlights the thickness of the tongue body 43 of the LP profile, necessary for its mechanical strength and which is, for example, imposed by the profile of the extension 12 of the groove RG of which the underside of the tongue 43 is the complement.

[0109] This mechanically necessary thickness of the tongue 43 imposes the “height” of the underside 234, 235, 237 of the tongue 23 and therefore the reduced thickness of the tongue 23 on the LG side of the blade 1.

[0110] Figure 7 shows in longitudinal / transverse / longitudinal section the assembly of blades 1, 1', 1” bringing together:

[0111] - the RG side of blade 1 with the LP side of the next blade 1',

[0112] - the RP side of blade 1' to the LG side of the next 1” blade, highlighting the LP and RP functions of a pair of short sides of blade 1'.

[0113] Figures 8A, 8B show the assembly by tilting the LG side of blade 1 to the RG side of blade 1 already installed and the assembly thus obtained.

[0114] Figure 8A shows the engagement and tilting of the LG side of the blade 1' into the RG side of the already installed blade 1. The assembly operation begins with the engagement of the tongue 23 of the blade 1' into the groove formed by the cavity 13 of the already installed blade 1. The tongue 23 slides around the fillet 1311 to come to press by its surface 231 against the locking support 131 and its lower surface comes against the clamping strip 14 and the ramp 15. The tongue is thus wedged between, on the one hand, the surface 16 and, on the other hand, the surfaces 14, 15, which blocks it in the X direction ensuring contact between the bearing surfaces 17, 13 and also blocking in the Z direction, both in the upward direction and in the downward direction since the underside B of the blade is resting on the ground.

[0115] In conclusion and according to the description above, the rectangular PVC, HDF cladding blade 1 intended for a herringbone installation, according to which the line of blades has a zigzag pattern of successive blades at right angles, each blade in a line being connected by its short side to the long side of the following blade, the blade having a pair of long sides and a pair of short sides, each pair of sides consisting of complementary profiles which can be assembled:

[0116] - one of the long sides having a groove and the other long side a tongue for assembly by engagement and tilting of the tongue in the groove of the side of another blade, one of the short sides having a grooved profile and the other side, a hooking profile for assembly to a grooved side by tilting the blade, blade characterized in that the two sides of each pair of long sides and short sides having, near the top of the blade, a high support in the plane of junction of the blades, the two short sides have combined profiles, symmetrical plane, superimposing a groove and a tongue, one of the long sides has a groove and the other, a tongue whose shapes and positions are homologous to the respective shapes and positions of the groove and the tongue of the combined profile,the assembly of a blade to be laid to the two adjacent blades of a set of blades laid in a herringbone pattern, carried out by a single tilting of the large side of the blade to be laid by the engagement of its tongue in one or more grooves, aligned on a large side or a small side of laid blades and simultaneous assembly of the small side with the side of another laid blade.,

[0117] This blade 1 is further characterized in that the tops of the tongue on the side or that of the cavity of the profile and the top of the cavity on the side have a respective surface formed at least in part by a horizontal surface at the same distance from the top of the blade.

[0118] According to another characteristic, the large side has a tongue having beyond the joining plane comprising: a locking top, a rounded nose, a downwardly inclined auxiliary bottom, a front ramp and, a front recess and the other large side has a groove, below the joining plane comprising: a cavity with the top surface forming a locking support, horizontal, at the determined distance from the top of the blade, a rounded bottom,

[0119] - a lower side 133, inclined downwards with a clamping strip 14 and, the small side FX has a groove RP, below the joining plane comprising: a cavity 33 with a top forming a support top 331 continuing with: a bottom 333, an inclined clamping surface 334, a ramp 335 forming a convex dihedron with the clamping surface, a top 336 of the head 34 of the tongue 432 forming the lower contour of the cavity 33, the groove RG of the large side receiving the tongue 23 of another large side protruding from the joining plane PJ for: the support 231 coming against the locking support 131, the front underside 234 coming against the lower side 133, the groove of a small side RP receiving the tongue 23 of a large side by: the support 231 coming against the support top 331, the front bottom 234 coming against the clamping surface 334, the front ramp 235 coming against the ramp 335, the front support 237 coming against the top 335,and the low support 238 coming against the low support 337.,

[0120] This blade 1 is further characterized in that the tops 231 of the tongue 23 on the LG side or that 331 of the cavity 33 of the FX RP profile and the top 131 of the cavity 13 on the RG side have a respective surface 231, 331, 131 formed at least in part by a horizontal surface at the same distance d from the top A of the blade 1. According to another characteristic, the large side LG has a tongue 23 having, beyond the junction plane PJ, comprising: a locking top 231, a rounded nose 233, an auxiliary bottom 234 inclined downwards, a front ramp 235 and a front recess 236 and the other large side RG has a groove, below the junction plane PJ, comprising: a cavity 13 with the top surface forming a locking support 131, horizontal, at the determined distance d from the top A of the blade 1, a rounded bottom 132, a lower side 133, inclined downwards with a clamping band 14 and, the small side FX has a groove (RP),below the joining plane comprising: a cavity 33 with a top forming a support top 331 continuing with: a bottom 333, an inclined clamping surface 334, a ramp 335 forming a convex dihedron with the clamping surface, a top 336 of the head 34 of the tongue 432 forming the lower contour of the cavity 33, the groove RG of the large side receiving the tongue 23 of another large side protruding from the joining plane PJ for: the support 231 coming against the locking support 131, the front bottom 234 coming against the lower side 133, the groove of a small side RP receiving the tongue 23 of a large side by: the support 231 coming against the support top 331, the front bottom 234 coming against the clamping surface 334, the front ramp 235 coming against the ramp 335, the front support 237 coming against the top 335, and the low support 238 coming against the low support 337.,

[0121] According to another characteristic, the groove of the large side RG, beyond the junction plane PJ comprises: a clamping strip 14 in the extension of the lower side 132, a rear ramp 15 forming with the clamping strip 14, a concave dihedron in the extension 12 of the side RG beyond the junction plane PJ, the tongue of the large side LG, below the junction plane PJ comprises: a rear clamping surface 24 extending by: a clamping ramp 25 forming with the clamping surface 24 a convex dihedron extending by a cavity 27, the tongue 23 of the LG side also coming against the cavity 13 of the side RG by its rear clamping surface 24 against the clamping strip 14 and by its rear ramp 25 against the rear ramp 15 leaving the top 17 of the head 16 clear in its rear recess, the tongue 23 thus being clamped by its contact surfaces 21, 231, 24, 25 with the corresponding and homologous contact surfaces 11, 131, 14, 15 of the groove RG.

[0122] According to another characteristic, the cavity 33 of the groove on the small side FX, RP is connected to the high support 31 by an entry ramp 332 preferably inclined at 45°, to guide the engagement by tilting of the tongue 23 on a large side in the cavity 33.

[0123] According to another characteristic - the locking tongue 23 has a low support 238 in the form of a surface inclined outwards and downwards, straddling the junction plane PJ, and the head 34 of the tongue 43 bordering and forming the lower side of the cavity 33 of the short side groove RP has a low support 337 in the form of a surface inclined downwards and inwards, straddling the junction plane to cooperate with the low support 238 of the tongue 23.

[0124] According to another characteristic, the dihedral 14, 15 and the top 17 of the head 16 of the extension 12 of the RP side and the dihedral 433, 434 and the low support 435 of the small side RG, LP are plane symmetrical with respect to the junction plane PJ.

[0125] Finally, it should be emphasized that, according to a variant, the high supports 11, 21, 31 of the large and small sides have complementary assembly elements constituted by hooking notches 111, 211 respectively on the high supports 11, 21 of the large sides and a hooking beak 311 on each of the small sides to cooperate with the hooking notch of the large side LG, RG to which this small side RP, LP is assembled.

[0126] NOMENCLATURE OF MAIN ELEMENTS

[0127] 1 , 1 blade

[0128] RG Long side groove

[0129] 11 High support

[0130] 111 Hanging notch

[0131] 12 Advanced

[0132] 121 Truncated edge

[0133] 13 Cavity

[0134] 131 Locking support

[0135] 1311 Leave

[0136] 132 Background

[0137] 133 Lower side

[0138] 14 Rear clamping band

[0139] 15 Rear ramp

[0140] 16 Back Head

[0141] 17 Top of the head 16

[0142] LG Large Side Tab

[0143] 21 High support

[0144] 211 Hanging notch

[0145] 23 Locking tab

[0146] 231 Locking Top

[0147] 232 Clearance

[0148] 233 Rounded nose

[0149] 234 Front bottom

[0150] 235 Front ramp

[0151] 236 Front recess

[0152] 237 Front support

[0153] 238 Low support

[0154] 24 Clamping surface

[0155] 25 Rear ramp

[0156] 26 Rear support

[0157] 27 Rear recess

[0158] FX Small Side Profile

[0159] RP Short side groove

[0160] 31 High support

[0161] 311 Beak

[0162] 32 Hollowing

[0163] 33 Cavity

[0164] 331 Support top

[0165] 332 Entrance ramp

[0166] 333 Background

[0167] 334 Clamping surface

[0168] 335 Ramp

[0169] 336 Top 337 Bottom support

[0170] 34 Head

[0171] LP Short Side Tab

[0172] 43 Tongue, tongue body 433 Auxiliary front underside

[0173] 434 Front auxiliary ramp

[0174] 435 Basic support

[0175] 436 Wall

[0176] 44 Clearly

Claims

CLAIMS 1. Rectangular PVC, HDF cladding blade (1) intended for herringbone installation, in which the line of blades has a zigzag pattern of successive blades at right angles, each blade in a line being connected by its short side to the long side of the following blade, the blade having a pair of long sides and a pair of short sides, each pair of sides consisting of complementary profiles which can be assembled!*: - one of the large sides having a groove (RG) and the other large side a tongue (23) for assembly by engagement and tilting of the tongue (LG) in the groove on the side of another blade, - one of the small sides having a grooved profile and the other side, a hooking profile for assembling to a grooved side by tilting the blade, blade (1) characterized in that - the two sides of each pair of large sides (RG, LG) and small sides (RP, LP) having, near the top (A) of the blade (1), a high support (11, 21, 31, 31) in the junction plane (PJ) of the blades (1), - the two small sides have combined profiles (FX), symmetrical plane each formed by a tongue (43) not exceeding the junction plane (PJ), delimiting by its top the groove (33) (RP) and by its bottom the tongue (43) (LP) combining on the top the groove (33) (RP) and the top of the tongue (43) (LP), - one of the long sides has a groove (RG) and the other a tongue (LG) whose shapes and positions are homologous to the respective shapes and positions of the groove (33) (RP) and the tongue (43) (LP) of the combined profile (FX), - the large side (RG) has a high support (11) in the junction plane (PJ) which continues with a cavity (13) forming the assembly groove extending along the large side of the blade, - the cavity (13) has a top forming a locking support (131) connected to the upper support (11) by a fillet (1311), - the lower side (133) of the cavity is sloping downwards with a flat surface forming a clamping strip (14) and a ramp (15) beyond the junction plane (PJ), - the large side (LG) has a high support (21) in the junction plane (PJ) continuing towards the underside (D) of the blade (1), by a locking tab (23) with a locking top (231) to come against the locking support (131) and a bottom of homologous and complementary shape to that of the top of the cavity (33) of the profile (FX) beyond the junction plane (PJ) and a complementary and homologous shape to the clamping strip (14) and to the ramp (15) of the side (RG), below the junction plane (PJ), - the assembly of a blade to be laid (l 5 ) to the two adjacent blades (1) of a set of blades laid in a broken stick pattern made by a single tilting of the large side of the blade to be laid (1') by engaging its tongue (LG) in one or more grooves (RG, RP), aligned on a large side or a small side of laid blades and simultaneous assembly in the junction plane (PJ) of the small side (FX) (RP, LP) with the side (RG) of another laid blade.

2. Blade (1) according to claim 1, characterized in that the tops (231) of the tongue (23) of the long side (LG), the top (331) of the cavity (33) of the profile (FX) (RP) and the top (131) of the cavity (13) of the side (RG) have a respective surface (231, 331, 131) formed at least in part by a horizontal surface at the same distance (d) from the top (A) of the blade (1).

3. Blade (1) according to claims 1 and 2, characterized in that A) the large side (LG) has a tab (23) beyond the junction plane (PJ) comprising: - a locking top (231), - a rounded nose (233), - an auxiliary bottom (234) inclined downwards, - a front ramp (235) and, - a front recess (236) and B) the other large side (RG) has a groove, below the junction plane (PJ) comprising: - a cavity (13) with the top surface forming a locking support (131), horizontal, at the determined distance (d) from the top (A) of the blade (1), - a rounded bottom (132), - a lower side (133), inclined downwards with a tightening band (14) and, C) the small side (FX) has a groove (RP), below the junction plane comprising: - a cavity (33) with a top forming a support top (331) continuing with: - a background (333), - an inclined clamping surface (334), - a ramp (335) forming a convex dihedral with the clamping surface, - a top (336) of the head (34) of the tongue (43) forming the lower contour of the cavity (33), D) the groove (RG) of the large side receiving the tongue (23) of another large side protruding from the junction plane (PJ) by: - the support (231) coming against the locking support (131), - the front underside (234) coming against the lower side (133), E) the groove (33) on a small side (RP) receiving the tongue (23) on a large side by: - the support (231) coming against the support top (331), - the front underside (234) coming against the clamping surface (334), - the front ramp (235) coming against the ramp (335), - the front support (237) coming against the top (335), and - the low support (238) coming against the low support (337).

4. Blade (1) according to claims 1 to 3, characterized in that - the groove (13) on the long side (RG), beyond the junction plane (PJ) includes: * a clamping strip (14) in the extension of the lower side (133), * a rear ramp (15) forming with the clamping strip (14), a concave dihedral in the extension (12) of the side (RG) beyond the junction plane (PJ), - the tab (23) on the long side (LG), below the junction plane (PJ) comprises: * a rear clamping surface (24) extending by: * a clamping ramp (25) forming with the clamping surface (24) a convex dihedron extending into a cavity (27), - the tongue (23) on the side (LG) also coming against the cavity (13) on the side (RG) by its rear clamping surface (24) against the clamping strip (14) and by its rear ramp (25) against the rear ramp (15) leaving the top (17) of the head (16) clear in its rear recess, the tongue (23) thus being clamped by its contact surfaces (21, 231, 24, 25) with the corresponding and homologous contact surfaces (11, 131, 14, 15) of the groove (RG).

5. Blade (1) according to claim 2, characterized in that - the cavity (33) of the groove on the small side (FX, RP) is connected to the high support (31) by an entry ramp (332) preferably inclined at 45°, to guide the engagement by tilting of the tongue (23) on a large side in the cavity (33).

6. Blade (1) according to claims 1 to 3, characterized in that - the locking tab (23) has a low support (238) in the form of a surface inclined outwards and downwards, straddling the junction plane (PJ), and - the head (34) of the tongue (43) bordering and forming the lower side of the cavity (33) of the short side groove (RP) has a low support (337) in the form of a surface inclined downwards and inwards, straddling the junction plane to cooperate with the low support (238) of the tab (23).

7. Blade (1) according to claims 3 and 4, characterized in that the dihedral (14, 15) and the top (17) of the head (16) of the extension (12) of the side (RP) and the dihedral (433, 434) and the low support (435) of the short side (RG, LP) are plane symmetrical with respect to the junction plane (PJ).

8. Blade (1) according to claim 1, characterized in that the high supports (11, 21, 31) of the large and small sides have complementary assembly elements constituted by hooking notches (111, 211) respectively on the high supports (11, 21) of the large sides and a hooking beak (311) on each of the small sides to cooperate with the hooking notch of the large side (LG, RG) to which this small side (RP, LP) is assembled.

Images