EP3222786A1 - Wall installation box - Google Patents

Abstract

In a wall mounting box (1) for flush mounting of a wall seal penetrating sanitary installations having a flange (7) for moisture-proof connection of the wall box to the wall seal, it is provided that the flange comprises a plug frame (8) for attachment to the wall box, wherein Wandeinbaukasten and the plug-in frame can be connected to a variable insertion depth via a groove-and-tongue connection (5, 10) surrounding the wall-mounting box and an outwardly facing sealing mat (9) for installation in the wall-sealing is introduced on the plug-in frame.

Description

The present invention relates to a wall mounting box for flush mounting of a wall seal penetrating sanitary installations with a wall-side flange for moisture-tight connection of the wall mounting box to the wall seal.

In sanitary facilities, especially in the public and commercial sector, measures are required to protect the building from penetrating moisture and moisture damage. As a water-repellent wall and floor coverings in the sanitary area mostly tiles are used. However, the joints of tile, ceramic and building joints are not waterproof. Therefore, below a ceramic wall covering, a wall seal is applied to protect the building from moisture penetration. The standard DIN 18195, which applies to structural waterproofing, provides for the use of geomembranes for standardized surface waterproofing. Alternative surface waterproofing are described in the leaflet of the Zentralverband des Deutschen Baugewerbes (ZDB) "Sealing in a composite with tiles". In these so-called alternative surface waterproofing wall surfaces are pretreated before applying a ceramic wall covering with a sealant. For this purpose, dispersion-based sealing compounds, 2-component sealing slurries or reaction resin products, for example based on epoxy resin, are suitable.

To connect plumbing installations such as mixer taps, this wall seal must be pierced. Such so-called penetrations must be integrated with a flange and / or a sleeve in the surface seal. Flush-free constructions with a coated sealing collar are used here for the flush-mounted installation of fittings. In addition, flange constructions are also known in which wall installation boxes with an adhesive flange or a Pressdichtungsflansch with Losund Fixed flange are provided. In the case of a pressure seal flange, the fixed flange is installed in the wall seal and then the loose flange of the wall mounting box is screwed with an additional press seal. For a wall mounting box with adhesive flange, it is directly connected to the wall seal using appropriate sealing materials and "glued" to it.

Often sanitary fittings are installed in lightweight walls. In such a wall created in drywall a Wandeinbaukasten is fixed to the stud of the lightweight wall and the sanitary pipes are laid to the Wandeinbaukasten. The flange of the wall installation box must then be connected to the wall covering, usually made of plasterboard, and the wall seal applied to it. Since this involves different trades, such assembly is difficult and error-prone. In particular, the correct installation depth must be ensured when installing the wall mounting box on the stud. In particular, the front edge of the wall mounting box must not protrude beyond the front edge of the later tile covering, since otherwise a cover plate of the mixing fitting to be installed can no longer be mounted flush. A depth compensation with respect to the installation depth of the wall box is not possible here. Only the installation depth of the fitting can be adjusted to a small extent, for example by a fitting extension set.

From the Scriptures DE 92 04 188 U1 is a wall mounting box for flush mounting a fitting known in which a rubber sealing tape is used as a wall seal. This has on the inside a groove-like edge region which is plugged onto the projecting beyond the wall housing flanks of the wall mounting box and glued to them. On the outside, the sealing tape forms a flange area, which is installed between the wall and tile coating. However, such, bonded with the Wandeinbaukasten rubber seal proves to be not sufficiently reliable, since on the one hand, the adhesive bond in the installation of the quality of manual activity depends, for example, by contamination such as mortar adhesions, as they typically occur on a construction site, can be leaking, on the other hand, the adhesive used can be leaking through aging processes over time.

From the Scriptures DE 196 48 587 A1 is a Unterputzeinbaukasten known for a fitting on the outer surface of its side walls, an annular sleeve of elastic material is pushed. This integrally includes a slidably applied to the outer surface of the side walls sealing region and a flange portion, the z. B. inserted into the gap between two cladding elements of the mounting wall and is tightly fixed there. In accordance with the thickness of the installation wall, the sealing area of the sleeve comes into contact at different points on the outer surface of the side walls of the installation box. Again, there is a disadvantage in that building site typical contamination on the outer surface of the mounting box lead to leaks on the pushed cuff.

It is therefore an object of the present invention to provide a wall mounting box for flush mounting of a wall seal penetrating plumbing installations, on the one hand ensures a reliable connection to the wall seal and on the other hand, the installation is simplified. In addition, a corresponding method for flush mounting of a wall seal passing through plumbing installations should be specified.

The object is achieved with regard to the wall mounting box by the features of claim 1 and with respect to the method by the features of claim 8. Advantageous embodiments can be taken from the dependent claims.

In a generic Wandeinbaukasten with a flange for moisture-tight connection of Wandeinbaukastens to the wall seal is inventively provided that the flange comprises a plug-in frame for mounting on the Wandeinbaukasten, wherein the plug frame telescopically with variable insertion depth on the wall box is attachable, and on the plug frame an outwardly facing sealing mat is incorporated for installation in the wall seal.

In this way, the wall mounting box can be installed in the wall construction or connected to this and the sanitary pipes are led into the wall box. Subsequently, the plug-in frame of the flange can be plugged onto the Wandeinbaukasten, the variable insertion depth allows depth compensation with respect to the Rohbaumaßes the wall. The sealing mat attached to the plug frame is then incorporated in the wall seal or connected to it using suitable sealing materials known per se, e.g. by gluing. Finally, the ceramic wall covering can be applied in a conventional manner and the sanitary fitting can be mounted with its cover plate. The two-part construction of Wandeinbaukasten one hand and attached flange on the other hand thus allows a simplified installation and a simple compensation of mounting tolerances.

In the context of the present invention, wall installation box and plug frame can be connected via a groove-spring connection with variable insertion depth, which surrounds the edge of the wall box. The tongue and groove connection gives the plug-in frame a secure grip and ensures a good seal thanks to the "labyrinth-like" gap between the tongue and groove.

Another advantage of the construction according to the invention is that the seal is recessed inside the groove, ie in an area that does not come into contact with building materials when installing the wall mounting box. Thus, no contamination on the inner sealing surfaces are to be feared here, which could lead to a defective seal.

The groove of the tongue and groove connection is formed by a circumferentially double-walled region of the side walls of the wall mounting box. These border on a wall connection side of the wall installation box which is open towards the front. A groove in the form of a circumferential double-walled area of the side walls On the one hand enables a stable and reliable waterproof connection between the flange and Wandeinbaukasten, on the other hand, a large tolerance range for the insertion depth of the tongue and groove joint. In addition, such a Wandeinbaukasten with double-walled area by modern methods of plastic production, for example, as an injection molded part is simple and inexpensive to manufacture. Finally, by cutting the double-walled area, this should be compensated over the Rohbaumaß the wall, a balance of mounting tolerances during installation of the mounting frame can be compensated.

For the latter purpose, it is particularly advantageous if in the double-walled region at least on the outer wall of the side walls circumferential separating grooves are provided for cutting the outer edge of the groove. By such separating grooves, a cutting tool such as a cutter knife when cutting the outer edge is guided, so that there is a clean cut and the outer edge of the groove can be deflected all around to the same degree.

Preferably, the spring provided on the plug-in frame of the tongue and groove connection has a press-in seal. The press-in seal can be designed, for example, as a bead-shaped seal provided on the outer edge of the spring. When inserting the spring into the associated groove of the wall mounting box thus results in a circumferentially waterproof connector. In the production of the plug-in frame, for example by injection molding, such a seal can be molded on to it or simply simply slipped onto the edge of the spring.

The seal which seals the tongue in the groove can in particular be made of an elastomer such as silicone, rubber or the like (ADPK, ADPK, EPDM, EPDM or TPE). The seal can be designed as a profile seal or as a seal with a solid, for example, round or square cross-section. It can also be arranged on the inside and outside of the tongue and groove joint or the spring separate seals.

In this context, it should be noted that it would also be possible in principle to cut off a spring arranged on the wall box, if necessary, to the size of the shell of the wall. For this purpose, either a seal could be provided in the groove arranged on the plug-in frame, or the seal could be subsequently attached to the cut-to-length spring of the wall-mounting box. If a seal is completely dispensed with, the groove and / or tongue of the tongue and groove joint can also be coated with a sealant such as sanitary silicone before the plug-in frame is attached.

The sealing mat connected to the plug-in frame preferably contains at least one waterproof film layer. The sealing mat, if this rests all around the adjacent wall, thus ensuring a watertight connection of the plug frame to the seal of the wall. Preferably, the sealing mat is multi-layered and contains, in addition to a film layer, one or more additional layers of a textile, preferably synthetic material, such as a woven, knitted, braided or non-woven material. Such a textile layer has a certain ability to absorb or wetting the adhesives used to seal the wall and can thus be soaked or coated well with them for installation in the wall seal, so that a stable and watertight connection results. Optionally, therefore, can be dispensed with a waterproof film layer. It is thus also within the scope of the present invention to use as a sealing mat only a single-layered sealing fleece or fabric, which is first impregnated or treated with the sealant used for the wall sealing, e.g. a conventional dispersion-based sealant, a 2-component sealing slurry, or a reaction resin product such as epoxy, forms a watertight wall seal.

Preferably, the sealing mat is welded to the plug frame all around or "overmolded" by this, so connected cohesively. Such a plastic compound can be produced easily and reliably. Many thermoplastic materials such as PE, PP or PVC, from which corresponding single or multi-layer sealing mats can be produced, are suitable for a thermal Welding. It is also possible to insert the sealing mat directly into an injection mold for the production of the plug frame and thus produce the flange of the plug frame and sealing mat in a single operation and the latter materially to connect ("overmold"). Alternatively, the sealing mat can also be glued or pressed to the plug frame.

A Wandeinbaukasten is preferably supplied with a serving as a shell protection, attachable to the wall mounting box cover. Such a structural protection prevents when installing the wall mounting box that the interior of the wall mounting box in particular but also the groove of the tongue and groove joint is contaminated during its assembly. In addition, such a cover can also be used as a template to transfer the installation dimensions of the installation box for sawing a matching wall recess on the wall or wall covering (plasterboard).

In addition, a method for flush mounting of a wall seal durchdingenden sanitary installations is specified in which mounted within a wall a Wandeinbaukasten and created by means of a flange, a moisture-proof connection of Wandeinbaukastens to the wall seal. According to the invention, it is provided that the flange comprises a plug-in frame, which is plugged onto the wall mounting box, wherein Wandeinbaukasten and plug frames are connected via a peripherally encircling the Wandeinbaukasten groove-tongue connection with variable insertion depth and on the plug frame an outwardly facing sealing mat is attached which is installed in the wall seal.

Here, the groove of the tongue and groove connection is formed by a circumferentially double-walled region of the side walls of the wall mounting box. A groove bounding the outer side wall of the wall mounting box can be cut to size after installation of the wall mounting box to a Rohbaumaß the wall, if necessary. Advantageously, after attaching a wall covering on the wall, a groove bounding the inner wall of the wall mounting box can be cut to a finished size of the wall covering.

Figur 1

eine isometrische Darstellung eines Wandeinbaukastens mit aufsteckbarem Flansch und Rohbauschutz in einer Explosionszeichnung,

Figur 2

eine Draufsicht auf den Wandeinbaukasten aus Figur 1 mit vier Zeichnungsquadranten, die unterschiedliche Stadien während des Einbaus darstellen,

Figuren 3a und 3b

einen Schnitt durch den Wandeinbaukasten entlang der Schnittlinie A-A aus Figur 2 mit minimalem und maximalem Einbaumaß,

Figur 4

eine vergrößerte Ansicht des Details Z aus Figur 3a,

Figur 5

den Wandeinbaukasten aus Figur 1 nach Einbau in eine Leichtbauwand und Ablängen der Außenkante der umfangsseitigen Nut auf das Rohbaumaß,

Figur 6

eine vergrößerte Detailansicht des Wandeinbaukastens nach Ablängen der Außenkante der Nut,

Figur 7

den Wandeinbaukasten aus Figur 5 nach Aufbringen des keramischen Wandbelags und

Figur 8

den Wandeinbaukasten aus Figur 7 nach Ablängen der inneren Seitenwand bzw. Innenkante der Nut auf das Fertigmaß des Wandbelags.

Further advantages and features of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawings. Show it:

FIG. 1

an isometric view of a wall mounting box with attachable flange and shell protection in an exploded view,

FIG. 2

a plan view of the wall box FIG. 1 with four drawing quadrants representing different stages during installation,

FIGS. 3a and 3b

a section through the Wandeinbaukasten along the section line AA FIG. 2 with minimum and maximum installation dimension,

FIG. 4

an enlarged view of the detail Z out FIG. 3a .

FIG. 5

the wall installation box FIG. 1 after installation in a lightweight wall and cutting the outer edge of the circumferential groove to the raw construction dimension,

FIG. 6

an enlarged detail view of the wall mounting box after cutting the outer edge of the groove,

FIG. 7

the wall installation box FIG. 5 after application of the ceramic wall covering and

FIG. 8

the wall installation box FIG. 7 After cutting the inner side wall or inner edge of the groove to the finished size of the wall covering.

The wall mounting box described in the following embodiment is used for installation and flush mounting a mixing valve of a shower. Similarly, however, wall mounting boxes may be provided for other plumbing installations, such as a showerhead, tub spout, or wall mounting fitting, which require penetration in the wall seal.

The in FIG. 1 shown Wandeinbaukasten 1 is used for installation in a lightweight wall and has for this purpose at its rear corners outwardly facing mounting lugs 2, with which it can be attached to trusses of a stud structure (not shown) of the lightweight wall. In the exemplary embodiment, the wall installation box, without the invention being limited thereto, has an approximately rectangular floor plan. In addition, however, other geometries, for example, with a round or oval outline, possible and covered by the invention with.

On the side and on its upper side wall, the wall installation box has 1 feedthroughs for the plumbing installed plumbing. In these passages pipe fittings 3a, 3b, 3c are used with corresponding sealing sleeves, which are provided on the inside with a screw for the mixing valve to be installed. The outwardly facing connection sides of the fittings 3a, 3b, 3c can be connected in a conventional manner by means of Quetschmuffen or pipe fittings to the hot and cold water supply lines and the mixed water outlet and configured accordingly. The three fittings 3a, 3b, 3c shown in the figure are to be understood as examples only. The wall box can also have more or less fittings.

In its front region 4 of the wall box 1 is double-walled and forms a forwardly open groove 5, which is bounded by an inner side wall 4a and an outer side wall 4b circumferentially around. The outer side wall 4b has a plurality in a front area 6 circumferential grooves, which serve as predetermined breaking points or cut-off lines for cutting the outer side wall 4b.

On the wall mounting box 1, a flange 7 is attached from the front, which is formed by a plug frame 8 and attached to this in the manner of a cuff, outwardly facing sealing mat 9. Of the plug frame 8 has at right angles to the rear a collar 10 which forms a spring for insertion into the groove 5 of the wall box. Collar 10 and groove 5 thus form a tongue and groove connection, are connected sealingly on the Aufsteckflansch 7 and Wandeinbaukasten 1. For sealing within the groove 5, an elastic seal 11 is attached to this end on the rearwardly facing edge of the collar 10. Alternatively, however, the plug-in frame 8 could also be sealed by means of a sealing compound, such as sanitary silicone, with which the groove 5 is spread before being put on.

The outwardly facing sealing mat 9 is used for connection to or installation in the wall seal of the lightweight wall, in which the wall box 1 is installed. A cover 12 serves as a shell protection and is attached during the construction of the lightweight wall, attaching the wall seal and applying the ceramic wall covering on the wall box 1. Four outwardly facing tips 13 on the cover 12 can be used to press the cover 12 in the manner of a template at a suitable location on the plasterboard of the lightweight wall. The resulting grain sizes can be used to saw out the radius for the rounded corners of the wall box 1 from the plasterboard wall by means of a hole saw and thus to introduce a dimensionally accurate cutout in the lightweight wall.

In FIG. 2 is a plan view of the wall box 1. FIG. 2 This is divided into four quadrants, each quadrant shows the box in a different phase during installation in a lightweight wall. The first quadrant in the upper left shows the installation box 1 as such. The second quadrant on the top right shows the installation box behind a shell wall 14 made of plasterboard. On the wall box 1 is the front flange 7 with his Plug frame 8 and the outwardly facing sealing mat 9 plugged. In the third quadrant bottom right, a wall seal 15 is applied to the shell wall 14. This can be done in a conventional manner in the manner of an alternative surface seal according to ZDB leaflet by applying a sealing compound. In this step, the sealing mat 9 is incorporated into the wall seal 15 with and thus forms a moisture-tight seal the shell wall 14 to the wall box 1. In the fourth quadrant bottom left is on the wall seal 15, a ceramic wall covering - here in the form of a tile 16 - attached.

In the FIGS. 3a and 3b is a section along the section line AA FIG. 2 shown. Here, the wall mounting box 1 is mounted in different mounting depths behind the shell wall 14. A compensation of the mounting dimension via a different insertion depth of the plug frame 8 in the groove 5 formed by the double-walled region 4. FIG. 3a shows the plug-in frame 8 maximally inserted into the groove 5, so with minimal installation depth of the wall mounting box. 1 FIG. 3b shows the reverse case of the maximum installation depth, ie at the lowest insertion depth of the plug frame. 8

The maximum installation depth of the wall installation box is in the exemplary embodiment, without the invention being limited thereto, 105 mm, the minimum installation depth 80 mm. Thus, a mounting tolerance of 25 mm can be allowed and compensated by varying the insertion depth of the spring 10. More generally, it is advantageous if in the context of the present invention, the insertion depth and thus the maximum bridged mounting tolerance, at least 10 mm, more preferably at least 20 mm, most preferably at least 25 mm.

The detail Z out FIG. 3a is in FIG. 4 shown as an enlarged section. The spring formed by the collar 10 of the plug frame 8 is inserted here at maximum insertion depth into the groove 5 formed by the side walls 4a, 4b. The elastic seal 11 seals the mounting frame 8 relative to the groove 5 of the installation box 1. The edge connected to the sealing frame 8 Sealing mat 9 is incorporated into the wall seal of the shell wall 14. The outer side wall 4b is reduced to the rough dimension of the shell wall 14, the inner side wall 4a, however, on the finished size of the tile covering 16. The wall box 1 thus concludes flush with the lightweight wall.

In FIG. 5 is the bolted to a stand construction and connected to the plumbing wall box 1 with the previously mounted shell wall 14 shown. Here, the outer wall 4b, which projected beyond the shell wall 14, separated along a separation groove, so that only the inner side wall 4a projects beyond the shell wall 14. The cutting of the outer side wall 4b can be done for example by means of a cutter knife. In FIG. 6 the wall installation box 1 with the corresponding shortened outer side wall 4b is shown enlarged. Subsequently, the plug frame 8 of the sealing flange is plugged into the groove 5 formed by the shortened outer side wall 4b and the still unabridged inner side wall 4a. Thereafter, the wall seal is applied and incorporated the sealing mat in this. Then the lightweight wall can be tiled. FIG. 7 shows the wall installation box 1 after attaching the tiles 16. The inner side wall 4a of the wall box is about the tiled floor 16 addition. In a final step, the inner side wall 4a is now cut to the finished size of the tile covering 16 by the side edge of the installation box 1 beyond that is cut off by means of a cutter knife. Subsequently, the tile covering 16 can still be grouted. FIG. 8 shows the ready built wall box 1 with the finished dimension of the tile covering 16 shortened inner side wall 4a.

The wall mounting box 1 shown in the embodiment and its plug frame 8 can be made by injection molding of plastic. The sealing mat 9 consists of a multilayer laminate with an inner and an outer fabric or nonwoven layer and a film layer arranged therebetween. The fabric or nonwoven layers ensure good wetting and bonding of the sealing mat to the sealant of the wall seal. The in between arranged foil ensures a watertight seal. Plug frame 8 and sealing mat 9 are materially connected to each other at the edge, in particular welded. The wall mounting box 1 itself is waterproof on the inside and sealed watertight at its passages for the fittings with elastomeric sealing sleeves. Thus, from the outside about penetrating moisture can not get into or behind the shell wall and dampen it. In the wall mounting box 1, the wall mounting fitting is installed after its mounting from its open front and closed with a cover plate. A slight inclination of the side walls of the wall mounting box 1 ensures that any incoming moisture can drain towards the front.

In the exemplary embodiment, the installation of the wall mounting box has been shown in a lightweight wall. In the same way, however, a wall box can also be installed in a masonry or concrete wall with a corresponding recess for receiving the wall box (i.e., in wet construction), and is included in the scope of the present invention.

Claims (9)

Wall installation box for flush mounting of a wall seal penetrating plumbing installations, with a flange (7) for moistureproof connection of the wall box (1) to the wall seal (15), wherein the flange (7) comprises a plug frame (8) for attachment to the wall box (1) wherein the plug-in frame (7) is telescopically with variable insertion depth on the Wandeinbaukasten (1) attachable and on the plug frame (8) an outwardly facing sealing mat (9) for installation in the wall seal (15) is mounted,
characterized in that
Wandeinbaukasten (1) and plug frame (7) via a peripheral edge around the Wandeinbaukasten (1) circumferential groove-spring connection (5, 10) are connected with variable insertion depth, wherein the groove (5) of the tongue and groove joint (5, 10) of a circumferentially double-walled area (6) of the side walls of the wall mounting box (1) is formed. Wall installation box according to claim 1, in which in the double-walled region (4) at least on the outer wall (4b) of the side walls encircling separating grooves (6) are provided for cutting the outer edge of the groove. Wall installation box according to claim 1 or 2, wherein the spring (10) of the tongue and groove joint (5, 10) has a press-in seal (11). Wall installation box according to one of the preceding claims, in which the sealing mat (9) contains at least one film layer. Wall installation box according to one of the preceding claims, wherein the sealing mat (9) is formed in several layers. Wall installation box according to one of the preceding claims, in which the sealing mat (9) is welded or encapsulated with the plug frame (8). Wall installation box according to one of the preceding claims, with a serving as a shell protection, on the wall mounting box (1) attachable cover (12). Method of flush-mounting sanitary installations penetrating a wall seal (15), in which a wall box (1) is mounted inside the wall (14), and a moisture-proof connection of the wall box (1) to the wall seal (15) is made by means of a flange (7) , wherein the flange (7) comprises a plug frame (8) which is telescopically with variable insertion depth on the wall mounting box (1) is fitted, and on the plug frame (8) an outwardly facing sealing mat (9) is mounted, in the wall seal (15) is installed
characterized in that
Wall installation box (1) and plug-in frame (7) via a peripherally around the Wandeinbaukasten (1) circumferential groove-spring connection (5, 10) are connected, wherein the groove (5) of the tongue and groove joint (5, 10) of a circumferentially double-walled area (6) of the side walls of the wall mounting box (1) is formed. A method according to claim 8, wherein an outer side wall (4b) of the wall box (1) delimiting the groove (5) is cut to a rough dimension of the wall (14) after installation of the wall box (1) and, preferably, after attachment of a wall Wall covering (16) on the wall (14) a the groove (5) delimiting inner wall (4a) of the wall mounting box (1) is cut to a finished size of the wall covering (16).

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