EP2510847A2 - Floor element for shower with wedge-shaped reinforcement in the outside area - Google Patents

Abstract

The imported earth element (1) is inserted into a compatible depression (6) inside a floor covering (8), which has high compression strength or the imported earth element is superimposed on a floor base (7). A core layer (2) is provided, which has a transition layer (24) resting at an outer edge length or at an inner edge length of the imported earth element with a grading. An independent claim is also included for a set arrangement comprises an imported earth element.

Description

The invention relates to a foreign soil element, such as shower tray bottom element, to form a floor-level overall system, the foreign soil element is either used in a compatible him sink within a high compressive strength flooring or the foreign soil element initially placed on a bare floor and having a high compressive strength Floor covering, such as a screed, then adjacent to the foreign soil element is applied, and wherein the foreign soil element has a layer structure as follows: a core layer of a plastic foam whose compressive strength is lower than that of said floor covering, a water-resistant bonded to the core layer transition layer consisting of an adhesive layer comprising a textile reinforcing structure, for example a nonwoven, woven fabric or scrim, and a high-pressure-resistant, upwardly plane or downwardly sloping layer of mortar as cover slip on the transitional layer.

Foreign soil elements, which may be multi-layer building panels for occupancy with material to be laid flat, are known in various designs. Use find such building boards in particular when fitting sanitary areas with floor-level shower tray elements.

• aus einer auf die Kernschicht aufgetragenen, dünnen Übergangsschicht,
• einer Glasfaservlies-Schicht und
• einer Verbundschicht aus druckfest ausgehärtetem Beschichtungsmörtel besteht.

DE 20 2010 003 760 U1 discloses such a layered building board consisting of a core layer made of moisture-resistant foam, which has on at least one supporting side a layer serving as a supporting layer, which comprises:

• from a thin transition layer applied to the core layer,
• a glass fiber fleece layer and
• a composite layer of pressure resistant cured coating mortar consists.

In general, this used as a shower tray floor elements foreign soil element is installed only in the shower itself. The area formed by the shower tray floor element is thus surrounded by a floor covering, which is usually a screed. Flooring and shower tray bottom element are usually covered with a uniformly formed covering and form a total floor-level system without height differences. A similar arrangement can be found in places for disabled toilets.

Usually this ground is entered by people with their feet. In doing so, the load caused by the weight of the human being spreads to the foot contact patch. However, floor-level shower systems are also particularly suitable for being used by a person sitting in a wheelchair. In this case, the total weight of the person and wheelchair over the wheel footprints, which are relatively small compared to the foot-footprints, a high pressure or point load on the impacted surface.

As a rule, this is not a problem if the substrate is a load-distributing and deformation-resistant layer, such as, for example, a covering made of ceramic tiles or tiles.

For hygienic reasons, the equipment with a continuous, flexible covering, such as PVC, for certain applications, for example in the sanitary areas of hospitals, in swimming pools or toilets for the disabled, particularly advantageous. However, such a coating transmits the load acting on it without further distribution directly to the underlying substrate.

A disadvantage of the DE 20 2010 003 760 U1 known building board is that the cost and weight reasons compared to the core layer held relatively thin, consisting essentially of mortar composite layer is not readily suitable to receive point loads, without causing a deformation in the plastic area or irreversible breaking the in connection with the hardening of the mortar, rigid bonds can occur between the individual structures contained in the mortar. This breaking of the bonds can be colloquially referred to as detachment or edge chipping.

Experience has shown that the edges of the mortar-coated building boards, in particular, which adjoin the boundary of the floor covering entered by a person or driven by a wheelchair, are particularly endangered.

It is also known DE 101 31 338 A1 a consisting of a rigid foam, serving to form a floor-level shower shower floor element with a preferably central drain, wherein a surface of the shower floor element is covered with a sealant. According to the invention, a groove open toward the top of the shower tray element is formed in the edge region of the shower tray element, which groove is materially reinforced and wherein an edge of the groove assigned to the peripheral edge runs at a distance (a) from the peripheral edge.

A disadvantage of this embodiment, on the one hand, the complicated production of the groove and on the other hand, that the reinforcing mortar layer is present only within the groove. The edge surrounding the groove, on the other hand, is made of a relatively soft hard foam compared to the grout layer in the groove.

The mortar layer applied above the marginal edge (see reference numeral (15), 6 and 7 in DE 101 31 338 A1 ) is therefore unreinforced. In this area occurring point loads that are not distributed over a load-distributing layer to other areas, but for example when occupying the mortar top layer with a flexible coating, are transferred directly to the underlying mortar, can in the unreinforced range of Edge leading to delamination or edge chipping or edge damage and thus to irreversible damage. It remains in addition to the groove on the outside of the existing rigid foam carrier element thus always a rigid foam area that extends to just below the applied over it covering. The grout-reinforced groove thus unfolds its reinforcing effect not directly on the edge of the support element, but only where the groove attaches. The area between the groove and the base surrounding the carrier element is unreinforced.

Out DE 10 2006 047 437 B3 is a support element for the expansion of barrier-free shower areas known, which, as well as in DE 101 31 338 A1 disclosed carrier element is provided within its edge region with a groove-like depression. This groove can initially be closed with a dummy piece during shower tray installation. After applying and grouting the floor covering, the dummy piece can be removed, so that then the glass pane of a fixed side part can dip into the depression.

Furthermore, a parallel to the first recess extending second recess may be provided. This depression can serve to compensate for an intentionally or unintentionally existing height difference between the surface of the floor covering applied to the carrier element and the surface of the floor covering surrounding the carrier element by inserting a suitable flat or angled profile into the depression.

As far as the support element is to be used without a fixed side part for a shower enclosure are the wells that are not needed, filled with a suitable mortar mass.

Although a filled with mortar composition groove represents a reinforcement of the support element, but this gain is analogous to DE 101 31 338 A1 disclosed carrier element is not arranged directly on the critical edge region, but spaced therefrom. Insofar as the carrier element and the area surrounding the carrier element is therefore not provided with a deformation-resistant layer, such as a covering made of tiles, but provided, for example, only with a flexible covering, eg based on PVC, the edge zone of the carrier element by the formed adjacent to the groove-like depression area. In contrast to the cavity filled with mortar, this area is only very limitedly suitable for receiving point loads.

The object of the invention is therefore to form a multilayer foreign soil element so that on the one hand, the plastic foam core layer covering mortar layer in a wide range thin, and thus inexpensive and easy to carry out, and that the mortar layer on the other hand in problem areas, especially in the edge regions to the outer edge of the Foreign soil element towards thicker, and thus more resistant to pressure / deformation is to be designed without additional work to be performed. Since foreign floor elements, which are designed as shower floor elements and therefore usually contain a recess for a drain pot, analogous problems can also occur in the edge region of the recess, it is Also object of the invention to propose here a reinforced version as a solution.

This object is achieved in that the core layer with the overlying transition layer on at least one outer edge length (L _A ) and / or on at least one inner edge length (L _I ) of the foreign soil element is provided with at least one gradation and that provided upwardly sloping or inclined Mortar layer is thickened in the range of gradation, so that between the surrounding floor covering and the foreign soil element no relevant difference in compressive strength, respectively deformation resistance exists.

The background is that the floor covering the subfloor and surrounding the foreign soil element is designed so that it is at least as thick as the foreign soil element itself and thus compared to the consisting of the core layer of the foreign soil element and the covering mortar layer unit significantly higher pressure resistance and thus Has deformation resistance. This strength gradient is the higher the thinner the mortar layer of the foreign soil element. Due to the practically non-existent elasticity of the mortar layer, individual and recurring load changes have a negative effect on the adhesive composite structure of the mortar itself, as well as the adhesive composite structures between the different outer layers. Such load changes occur, for example, when a wheelchair wheel passes over the boundary between floor covering and foreign floor element and occurring in the area of the wheel contact surface Point load on the mortar edge of the foreign soil element abruptly transmits.

The reinforcement of the mortar layer in the critical edge area according to the invention reduces the strength and resistance difference with respect to the bending deformation properties between the floor covering and the foreign floor element.

It is advantageous if the boundary region of the gradation is formed from the compacted material of the core layer. In this case, the material originally present in the region of the recess is at least partially not mechanically removed, for example by cutting, milling or cutting, but compacted. The compression takes place by the application of a high pressure to the area provided for the recess. In this case, such a high pressure must be introduced that the core layer deforms irreversibly, so that the recess is maintained even after the pressure relief.

It is particularly advantageous if not only one, but several gradations are available. In this case, starting from the greatest thickness of the mortar layer at the outer edge, the latter is gradually reduced to the thickness of the mortar layer provided in the middle region.

Instead of many gradations, it is favorable in terms of production to form a wedge-shaped chamfer. Such a chamfer, to which the mortar layer is applied wedge-shaped slimming, also has the advantage that the compressive strength is not gradual, but linearly sloping, that is, from a high value at the outer edge to the lower value required at the central portion of the foreign body member characterized by a uniform mortar film thickness.

It is advantageous if the angle of the bevel is greater than 10 ° and less than 45 °. From a smaller taper angle, either an insufficient thickness of the mortar layer at the extraneous bottom edge of the element or a longer, and hence heavier mortar wedge area results. A bevel angle greater than 45 ° reduces the compressive strength gradient over a very short distance from a high to a low value, so that load changes that occur can be detrimental.

In order to reduce the variants that can be formed by extraneous base elements reinforced only on one side, it is advantageous, in particular in the case of non-square-shaped foreign base elements, if the entire periphery of the foreign base element is provided with one or more gradations and accordingly with a mortar thickening on the edge.

It is furthermore advantageous if a load-absorbing reinforcement / reinforcement is introduced into the mortar layer in the region of the gradation or bevel, since this increases the compressive strength in the critical edge region of the foreign soil element.

This reinforcement can be a mat, a fabric, a scrim or the like. The material for this are both textile structures and geometries made of plastics or glass fibers into consideration. Also suitable are reinforcements made of bundles of material arranged in bundles, as well as strips or profiles made of a composite material. An example of such a composite material is a material commercially available under the name "Phonotherm" from Bosig GmbH, which is a polyurethane-based plastic to which adjuvants such as alufoil particles are added.

Particularly advantageous is the execution of the reinforcement of a preferably connected to the element plastic or metal rail, since these are inexpensive to obtain as standard products and in handling, that is, when placed on the hard foam layer and lapping with mortar, are simple.

Insofar as a reinforcement of an angle profile is used as the reinforcing element, a particularly favorable form of reinforcement is produced by the combination of high resistance moment and simple handling. The reinforcement should be laid on the grading or bevel so that it is completely enclosed by the mortar layer to be applied.

In a further embodiment of the invention, the foreign soil element is not prefabricated inserted into a sink introduced in the floor, but created at the site. For this purpose, a Setzusammenstellung invention, consisting of a foreign soil element, such as a shower tray bottom element, wherein the foreign soil element is a core layer of plastic foam whose compressive strength is lower than that of said Flooring, and a water-resistant bonded to the core layer transition layer, wherein the core layer is disposed with the overlying transition layer at least one edge length of the foreign soil element to the outside or bevelled. Further, the set composition includes a packaged, admixed grout substance to be applied as a mortar slurry in situ to the core and transition layers and to provide a high pressure resistant, upwardly planar or gradient mortar layer as a topcoat on the transition layer, with grading or beveling results in a wedge-shaped thickened mortar layer and thus an excessive pressure gradient from the floor level to the foreign soil element can be excluded.

The contour of the foreign soil element is preferably square, but possible are other, for example round or polygonal shapes.

embodiment

The invention will be explained in more detail with reference to an embodiment illustrative drawing.

Fig. 1:

die Kernschicht eines Fremdbodenelementes in einer Ausführung für ein Duschbodenelement in perspektivischer Darstellung,

Fig. 2

den Schnitt gemäß der Linie I - I in Fig. 1

Fig. 3

ein Fremdbodenelement mit dreischichtigem Aufbau und in den Randzonen keilförmig verdickter Mörtelschicht,

Fig. 4

eine Schnittdarstellung durch den Anschlussbereich zwischen Duschbodenelement und angrenzendem Fußbodenbelag,

Fig. 5

einen Teilschnitt durch ein Fremdbodenelement mit einfach abgestufter Mörtelverstärkung,

Fig. 6

einen Teilschnitt durch ein Fremdbodenelement mit mehrfach abgestufter Mörtelverstärkung,

Fig. 7

einen Teilschnitt durch ein Fremdbodenelement mit keilförmig abgeschrägter Mörtelverstärkung und als Winkelprofil ausgebildeter Verstärkung.

The figures of the drawing show:

Fig. 1:

the core layer of a foreign soil element in a design for a shower floor element in a perspective view,

Fig. 2

the section along the line I - I in Fig. 1

Fig. 3

a foreign soil element with a three-layer structure and a wedge-shaped thickened mortar layer in the edge zones,

Fig. 4

a sectional view through the connection area between shower floor element and adjacent floor covering,

Fig. 5

a partial section through a foreign soil element with a simple graded mortar reinforcement,

Fig. 6

a partial section through a foreign soil element with multi-stepped mortar reinforcement,

Fig. 7

a partial section through a foreign soil element with wedge-shaped bevelled mortar reinforcement and formed as an angle profile reinforcement.

FIG. 1 shows the core layer 2 of a foreign soil element 1 in a design for a shower floor element with a circumferential ridge 15 and a by the angle α ₁ to the outer edge 16 towards wedge-shaped sloping bevel 17 and a circumferential ridge 18, from which a likewise wedge-shaped bevel 19 by the angle α ₂ drops towards a recess 5. The angles α ₁ and α ₂ are preferably the same size. The chamfers 17 and 19 extend in this embodiment over all four edge lengths L _A and L _I.

On the other side of the ridge 15 falls to the ridge 18 by the angle β ₁ . The angle β ₁ is about 1 ° and is preferably identical to that in FIG. 3 illustrated angles β ₂ of the surface of the mortar layer 4. The β by the angle ₂ induced gradient passes through a (not shown) shower head which is introduced to the water arranged in the recess 5 drain pot. 9

While the mortar layer 4 is thickened in the region of the bevel A wedge-shaped by the angle α ₁ and α _2, it is preferably formed in the region B with a constant thickness.

FIG. 3 shows a foreign soil element 1 with three-layer construction. The core layer 2 corresponds to that in FIG FIG. 1 represented core layer and forms the first layer. This layer is covered with a water-resistant, bonded to the core layer 2 and a nonwoven 3-containing transition layer 24. The cover layer of the foreign soil element 1 is formed by a high-strength, to the recess 5 with a slope β ₂ provided mortar layer 4th

In FIG. 4 the foreign soil element 1 inserted into a depression 6 is shown. The depression 6 is compatible with the foreign floor element 1 and is formed by a recess in the floor covering 8 applied to a green floor 7. Foreign soil element 1 and 6 sink together form a clearance fit, so that the foreign soil element 1 is surrounded in the inserted state by a joint 21 with an average width of about 5 mm.

The depression 6 has a depth which corresponds at least to the thickness of the foreign soil element 1. As far as the foreign soil element 1 is a shower tray element, the depression 6 has either a total, or at least in the region of the drainage pot 9, a depth resulting from the addition of the thickness dimension of the foreign soil element with the optionally additionally required for receiving the drainage pot Free space measurement results.

The foreign soil element 1 is aligned within the depression 6 in such a way that the upper edge 10 of the outer contour of the foreign soil element 1 is flush with the upper edge 11 of the floor plane 26. Any differences in height are compensated by relining the foreign soil element 1 with compensating elements 12 or with height adjustable elements, for example, equipped with an external thread feet 14, which can be screwed into the internal thread of introduced into the bottom of the foreign soil element threaded bushings 13 may act.

The gap 21 extending between the foreign floor element 1 and the floor covering 8 is filled with a joint mortar or a flexible joint seal and covered with a joint tape 22. On the surface of the floor covering 8 and the mortar layer 4 is by means of an adhesive layer 29, a uniformly shaped, flexible coating 28, which may be, for example, PVC applied. The flexible covering 28 adapts to the underlying surface contour. In the in FIG. 4 illustrated embodiment, the surface of the flexible covering 28 is thus in the area of the floor covering 8 plan and provided in the region of the foreign soil element 1 with the angle β ₂ , which forms a slope to the drainage pot 9. The inserted into the recess 5 drain pan 9 is sealed with a sealing means not shown on the underside of the upper edge 23 to the flexible coating 28 out.

The FIGS. 5, 6 and 7 show different embodiments of the trained in the grading or beveling areas A mortar reinforcements. For example, area A may be graded 25 ( Fig. 5 ), multi-level ( Fig. 6 ) or wedge-shaped ( Fig. 7 ) be formed. However, polygonal forms should not be excluded.

FIG. 7 also shows a reinforcement 20 inserted in the bevel area A, which can be an angle profile 27 by way of example. Such or other reinforcement can be introduced into all grading or beveling areas A.

LIST OF REFERENCE NUMBERS

1

Foreign base element

2

core layer

3

fleece

4

mortar layer

5

recess

6

depression

7

Unprocessed

8th

flooring

9

drain pot

10

top edge

11

top edge

12

compensation element

13

threaded bushing

14

foot

15

ridge

16

outer edge

17

bevel

18

ridge

19 20

reinforcement

21

Gap

22

joint tape

23

upper edge

24

Transition layer

25

gradation

26

floor level

27

angle section

28

flexible covering

29

adhesive layer

α ₁

angle

α ₂

angle

β ₁

Slope angle

β ₂

Slope angle

A

Area

B

Area

I-I

intersection

L _A

Outside edge length

L _I

Inside edge length

Claims (11)

Foreign soil element (1), for example, shower tray bottom element, to form a floor-level overall system, the foreign soil element (1) either in a compatible him sink (6) within a high compressive strength flooring (8) is used or the foreign soil element first on one Unprocessed floor (7) is placed and the high compressive strength floor covering (8), for example a screed, then adjacent to the foreign soil element is applied, and wherein the foreign soil element (1) has a layer structure as follows: a core layer (2) made of a plastic foam whose Compressive strength is lower than that of said floor covering (8), a transiently bonded to the core layer (2) transition layer (24) consisting of an adhesive layer, which includes a textile reinforcing structure, such as a nonwoven fabric or fabric (3), and a high -pressure-resistant, upwardly plane or sloping mortar Not (4) as a cover layer on the transition layer (24), characterized in that the core layer (2) with the overlying transition layer (24) on at least one outer edge length (L _A ) and / or at least one inner edge edge length (L _I ) of the foreign soil element (1) is provided with at least one step (25), and that the upwardly sloping or downwardly sloping mortar layer (4) is thickened in the region of the step (25) so that between the surrounding floor covering (8) and the foreign floor element ( 1) no relevant difference in compressive strength, respectively deformation resistance exists. Foreign soil element (1) according to claim 1, characterized in that the boundary region of the gradation (25) from the compacted material of the core layer (2) is formed. Foreign soil element (1) according to claim 1 or 2, characterized in that the core layer (2) with the overlying transition layer (24) on at least one outer edge length (L _A ) and / or inner edge length (L _I ) of the foreign soil element (1) instead of a or more gradations (25) has an outwardly directed, wedge-shaped chamfer (17, 19) and that the upwardly plane or sloping mortar layer (4) in the region of the chamfer (17, 19) is thickened. Foreign soil element (1) according to claim 3, characterized in that the slope angle of the chamfer (17) is between 10 and 45 °. Foreign soil element (1) according to claim 1, 2 or 3, characterized in that the entire periphery of the foreign soil element (1) is provided with one or more gradations (25) and accordingly with a marginal mortar thickening. Foreign soil element (1) according to claim 3 or 4, characterized in that the entire periphery of the foreign soil element (1) is provided with a bevel (17; 19) and accordingly with a wedge-shaped, edge-side mortar thickening. Foreign soil element (1) according to one of the preceding claims, characterized in that in the region of the step (25) or bevel (17; 19) a load-absorbing reinforcement (20) is introduced into the mortar layer (4). Foreign soil element (1) according to claim 7, characterized in that it is the reinforcement (20) is a mat or a bundle-shaped strip of material. Foreign ground element (1) according to claim 7, characterized in that it is the reinforcement (20) is a plastic or metal rail. Foreign floor element (1) according to claim 9, characterized in that the plastic or metal rail is cut to length from an angle section (27). Assembly set consisting of a foreign soil element (1) , for example a shower tray bottom element, for insertion into a foreign soil element compatible sink (6) within a floor level (26) with a high compressive strength of the sink (6) surrounding floor covering (8), said the foreign floor element (1) has a layer structure as follows: a core layer (2) of a plastic foam whose compressive strength is lower than that of said floor covering (8), a transitional layer (24) bonded to the core layer (2) in a water-resistant manner (2) with the overlapping transition layer (24) on at least one edge length (L) of the And a packaged, admixed mortar substance to be applied as mortar pulp in situ to the core and transition layer (2; 24) and a high-pressure-resistant, upwardly plane or sloping mortar layer (4) as a cover layer on the transition layer (24), wherein a wedge-shaped thickened mortar layer (24) results in the area of the chamfer and thus an excessive compressive strength gradient from the floor level (26) to the foreign floor element (1) can be excluded.

Images