FR2524515A1 - SUPPORT PLOT FOR FLOOR TILES - Google Patents

Abstract

THE PLOT INCLUDES A CENTRAL PELLET 11, AN OUTER CROWN 12 SURROUNDING THE CENTRAL PELLET AND SPACE THEREOF, AND CONNECTING ELEMENTS 13 CONNECTING THE CENTRAL PELLET HAVING SUPERIOR SUPPORT SURFACES SUBSTANTIALLY COPLANAR AND SUPERIOR MODERN CROWN WITH THAT OF THE PELLET, EACH SLAB SUPPORTED BY THE PLOT BEING THUS SUPPORTED ON THE CROWN AND, AT ITS ANGLE, ON THE PELLET.

Description

Support pad for floor tiles.

  The present invention relates to a support pad

of flooring tiles.

  Prefabricated slabs, in particular concrete, used for floor coverings subject to traffic

  Pedestrian and / or vehicle lation can be po-

  seated on studs Usually, each slab angle rests on a stud common to different neighboring slabs With the studs currently available, this method of installation requires the use of slabs of mechanical resistance significantly higher than those of slabs

  on evenly distributed supports (sand, mortar, etc.).

  The object of the present invention is to provide a

  stud allowing the use of slabs having a resistance

  mechanical strength significantly lower than the current one-

  required to comply with the regulations in force

  concerning the floor coverings formed by

slabs laid on studs.

  This object is achieved thanks to a stud comprising, in accordance with the invention: a central patch, a

  outer crown surrounding the central patch and

  pacé thereof, and connecting elements connecting the central patch to the crown, the outer crown

  and the central patch having upper surfaces

  substantially coplanar support res, and the crown having an apparent modulus greater than that of the pellet.

  For a given slab, we can define a

  PSTA intrinsic static resistance and dy-

  namic of use PDYN 'The PSTA resistance is by

  example determined during an effective rupture test

  killed by applying a static charge to the center of

  the slab supported along two opposite edges The re-

  PDYN resistance is for example determined during a rupture test carried out by application of a dynamic load (passage of a vehicle wheel, for example) on

  the slab on studs under normal installation conditions.

  Compared to existing studs offering a bearing surface only at the corners of the slabs, the studs according to the invention make it possible to very significantly increase the PDYN / P STA ratio, an increase which can

  go up to 100% We can then imagine that, to keep

  ver the same dynamic resistance, just a re-

  static resistance much lower than that hitherto born

  cessaire, hence an appreciable economy of matter This-

  The increase in the PDYN / PSTA ratio is due to the pre-

  sence of the crown which allows, for each slab, to reduce the free distance between rigid supports As for the central pellet, of rigidity less than that of the crown, it certainly participates in the support of the slab, but also has in particular the functions of 'ensure

  stability at angles and to catch any ir-

  dimensional regularities, the probability of existence

  of the latter being stronger in the peri-

  level of the slab and especially at the corners.

  Preferably, the distance d between the center of the stud and the outer edge of the crown, measured along the location on the side of a slab, is included

  between L / 4 and L / 2, L being the length of said side of the slab.

  More preferably, the crown has a symmetrical shape with respect to the vertical axis of the patch,

  for example a circular or polygonal shape Any-

  times, in the case of non-square rectangular tiles, the distance d defined above can take values

  different when measured along two co-

  tees different from the slab The crown can then have the shape of an ellipse or an irregular polygon. Other features and advantages of the pad according to the invention will emerge on reading the

  description given below, as an indication but not

  limiting Reference is made to the appended drawings in which

  the figure is a schematic perspective view

  pective of a pad according to the invention, Figure 2 is a vertical sectional view of the pad of Figure 1 in the use position, Figure 3 is a vertical sectional view of an alternative embodiment of a pad according to the invention,

  Figure 4 schematically illustrates a re-

  floor garment formed by tiles placed on studs according to the invention, FIG. 5 is a perspective view of an additional piece intended for a stud according to the invention, FIG. 6 is a perspective view of 'a raised stud by means of the complementary part of Figure 5, Figure 7 is a top view of the stud of Figure 1 provided with slab height adjustment shims, and, Figure 8 is a sectional view following the

line VIII-VIII of Figure 7.

  The stud 10 illustrated in FIG. 1 is made up of

  killed by a central tablet 11, an external crown

  re 12 and radial link arms 13 connecting the step

  pin 11 to the outer ring 12.

  The central patch is cylindrical in shape, with a diameter of between 40 and 60 mm approximately. It has two cross ribs on its upper face.

14 forming slab separators.

  In the example illustrated, the outer crown

  re 12 is circular in shape with the same vertical axis of symmetry as the patch 11 The thickness of the crown

  12, measured radially is a few mm, for information

  dicative about 6 to 15 mm This thickness increases slightly

  rement, for example from 1 to 3 mm, from the upper face

  re to the underside of the crown Several notches 15 are formed in the crown 12 from its underside to allow the circulation of water on the ground when the stud is placed Furthermore, other notches 16, four in number, are formed in the crown 12, from its upper face, in alignment with the separators 14 The notches 16 form incipient fractures for cutting the stud when

  should be placed along one side or at an angle to the cover

  floor to support only one, two or three tiles Preferably, the notches 15 are located at the

  level of the notches 16 to also facilitate removal

cutting the stud.

  The connecting arms 13 are for example four in number, making between them angles of 90 and spaced both from the upper plane of the stud in which the slab support surfaces are located and from the lower plane in which the surfaces are located support on the ground Each link arm 13 extends radially from the pad 11 and is connected to the crown 12

  substantially halfway between two notches 16.

  The upper face of the crown 12 and the fac-

  this upper of the pad 11, between the separators

  14, form coplanar support surfaces for dal-

  the Crown 12 has an apparent upper module

  laughing at that of the pastille 11 In a first mode

  embodiment (Figure 2), the stud is molded in a single

  the part made of a rigid plastic material such as polyethylene or polypropylene and the lower hardness of the pellet It is obtained by forming therein a

  central recess there from its underside.

  In a second embodiment (Figure 3), the

  line 12, arms 13 and the bottom of the

  11 pads are molded in one piece in one

  rigid plastic while the upper part llb of the pellet It is an insert glued in

  a different flexible material such as an elastomer.

  To form a floor covering using

  the studs 10, these are placed in the corresponding places

  at the corners of the slabs, the separators 14 material-

  reading the primers of the joints between slabs As can be seen in FIG. 2, and more schematically in FIG. 4, each slab 30 rests on four studs and each of these supports the slab on the one hand, by means of the patch 11, in an angle 31 of the slab and, on the other hand, by means of the crown 12, along a

  zone 32 spaced from corner 31 Crowns 12 present

  try a relatively large outside radius d

  in radius r of the pellets 11 In this way, as the

  in FIG. 4, the crowns 12 of the four studs above

  bearing the same slab offer it support ri-

  gides in zones 32 spaced from each other by a distance significantly less than that separating the bearing zones 31 on the pads 11 Preferably, the outside radius d of the crowns 12 is between

  L / 3 and L / 2, L being the length of the side of the upper slab

  laid here square In practice, the tiles are generally square and 30, 40 or 50 cm side, Although the support function of the tiles is mainly

  provided by the crowns 12, the pads 11 are in-

  dispensable to ensure the stability of the tiles at angles and to catch up thanks to their lower rigidity

  possible peripheral irregularities of the slabs.

  Alternatively, as already indicated, the crown

  12 may have the shape of a symmetrical polygon with respect to

  port to the axis of the stud In this case, the distance d is me-

  surée between the center of the stud and the outer edge of the crown 12 in alignment with the separators of

slabs 14.

  Still alternatively, when the tiles are not square, the crowns 12 may have

  different distances along two separators

  sins, this distance preferably remaining always between L / 2 and L / 4, L being the length of the side of

corresponding slab.

  The regulations impose studs with different support surfaces on the ground depending on the nature of the support and different heights depending on the surface.

  of the ground to be covered This can be obtained either by using

  siting studs 10 of different sizes, either

  supplementing the stud 10 by means of an additional piece

  as shown in Figure 5.

  The piece 20 molded in one piece from a rigid plastic material has a shape similar to that of the stud 10 with a central pad 21, an outer ring 22 provided with notches 25, 26 and link arms 23 However, the upper face lozenge

  21 is flat while the upper face of the crown

  ne 22 has a central annular rib 27 A

  corresponding groove 17 is formed in the underside

  lower of stud 10 When stud 10 is placed on the

  part 20 (figure 6), the pellet rests on the step

  21 while the crown 12 rests on the neck

  line 22 with engagement of the rib 27 in the groove

  re 17 The complementary part 20 has a support part on the ground with an area greater than that of the part

  support on the ground of the stud 10 Thus, the stud 10 or the assembly

  ble plot 10-piece of complement 20 can meet

  all cases provided for by the regulations.

  Leveling the upper surface of the

  flooring or the presence of significant irregularities

  the thicknesses of slab thickness may require the use of

  sation of height adjustment shims interposed between the stud and the slab Several embodiments

  of shims are shown in FIG. 7.

  A first wedge 40 is intended to be placed only between the pad II and an angle of

  slab This wedge has the shape of a sector of 90 mm

  me outside radius as the patch 11 and inserting in-

  tre two separators 14 To avoid rapid displacement

  wedge dial after laying the slab, lugs 41 may be provided along the radial edges of the

  wedge 40, these lugs penetrating into corresponding housings

  18 laid in the vertical edges of the separations

ters 14.

  A second wedge 50 is intended to be inter-

  placed between the crown 12 and the slab The wedge 50 is an annular sector of 900 with a U-section so that it can be placed astride the upper edge of the crown One of the radial edges of the wedge 50 is closed by a wall 51 penetrating into a notch 16 Thus, the shim 50 is blocked radially and in rotation around

the axis of the stud.

  When necessary for the same dal-

  the, we can use both a shim 40 and a shim 50 or, alternatively, a shim such as 60 based on

  the pad 11 and the crown 12 This wedge 60 also has

  ment a sector shape of 90 and includes lateral pins 61 similar to the pins 41 of the wedge 40 and,

  at the end of one of the radial edges, a part 62 makes

  projecting laterally and below to engage

  manage in a notch 16 in the same way as the wall

  51 of the wedge 50 The wedge 60 is thus effectively blocked-

  in radial direction and in rotation around the axis

of the stud.

  Of course, various modifications and

  tions can be made to the embodiments described above of a pad according to the invention without

  this going beyond the protective framework defined by the re-

annexed vendications.

Claims (15)

  1 support pad for floor covering tiles, characterized in that it includes a central patch (11), an outer ring (12) surrounding the patch   central and spaced from it, and elements of liai-   sound (13) connecting the central patch to the crown, the outer crown and the central patch having   substantially support upper surfaces   planar and the outer crown presenting a modu-   the apparent superior to that of the pastille.   2 stud according to claim 1, characterized in that the distance d between the center of the stud and the edge   outside of the crown (12), measured along the em-   placement on the side of a slab, is between L / 4 and   L / 2, L being the length of said slab side.   3 stud according to any one of claims   1 and 2, characterized in that the crown is symmetrical   relative to the vertical axis of the patch.   4 Plot according to any one of claims   1 to 3, characterized in that the patch (11) has a recess (11a) so as to reduce its apparent modulus.   Plot according to any one of the claims   1 to 3, characterized in that the tablet (11), at least   in its upper part (11 b), is made of a material   riau having a lower modulus than that of the material titutative of the crown.   6 Plot according to any one of claims   1 to 5, characterized in that the upper face of the   pastille (11) has ribs (14) forming separate slabs.   7 Plot according to any one of claims   1 to 6, characterized in that it is formed of two superimposed parts (10, 20) each comprising a central patch (11, 21) and an outer ring (12, 22) connected to each other by connecting elements (13, 23), the lower part (20) constituting a complementary part intended to provide the stud with an area upper surface support.   8 stud according to claim 7, characterized in that the crown (22) of the complementary part (20) has on its upper face a rib (27) intended to engage in a corresponding groove (17) formed   in the underside of the crown (<2) of the upper tie (10) of the stud.   9 Plot according to any one of claims   1 to 8, characterized in that it is provided with at least one shim (40; 50; 60) for adjusting the height of the slab having the shape of a sector of 90.   10 stud according to claim 9, characterized in that the wedge (40; 50; 60> has projecting parts (41; 51; 61, 62) penetrating into housings provided on the stud to block the wedge relative to the stud in radial direction and rotating around the axis vertical of the stud.