EP3540136B1 - Wall-mounting device - Google Patents

Description

The present invention relates to a wall mounting device with which an element, e.g. B. a storage or storage box can be mounted on or in a building wall.

Said box could also be a leakage protection device for a water dispensing device, such as a cistern, a fitting or a valve or part of a wall drain for z. B. shower water. It can e.g. B. also be a closed by doors furniture-like element, z. B. a mirror cabinet.

For mounting objects on or in walls, various mounting devices are known, in the simplest case nails and screws for hanging or screwing, but also z. B. rail systems to be attached to a wall for system shelving elements. When installing in a wall, such as a drywall or a pre-wall in a bathroom, mounting frames are also in common use, with which z. B. toilets or wash basins can be attached freely hanging, hanging in the assembled state on the one hand in front of the wall and on the other hand are anchored in the wall. These mounting frames basically consist of vertical supports stabilized by cross struts, which transfer the corresponding forces downwards to the floor and to which a sanitary object is screwed.

It can play a role here to take wall structures of different thicknesses into account, for example because at the time such a mounting frame is installed, the thickness of the wall can also be foreseen in terms of its thickness in the depth direction (perpendicular to the wall plane), but not the exact thickness of a wall Cladding of the planking with z. B. tiles, natural stone slabs, etc. Accordingly, fine adjustments in the depth direction may be necessary during assembly.

The U.S. 3,620,404 A describes the assembly of a box in a wall using an assembly receiving device, namely a frame, which is anchored in the wall and receives the box by sliding the box. Lateral elastic hooks hook onto the box in sawtooth profile elements on the soffits of the assembly receiving device. The US 2016/138251 A1 shows a connecting element for water pipes, which is adjustable as a result of the mutual engagement of sawtooth profile elements on its sides and on the soffits of a box-like receptacle with respect to this, specifically in a longitudinal direction in the plane of a wall in which the receptacle is to be mounted. The EP 2 896 756 A1 describes the inclusion of a box-like element in a wall by pushing it into an assembly receiving device, with lateral and adjustable stop elements limiting the depth of insertion.

The present invention is based on the object of specifying a wall mounting device that is simple and practical in terms of depth adjustment for mounting an element on or in a vertical building wall.

This object is achieved by a wall mounting device with an element to be mounted on or in a vertical building wall, a mounting receiving device for mounting the element therein and for mounting the mounting receiving device in the building wall, a positive locking device for mounting the element in the mounting mounting device, which positive locking device has: a Receptacle on the element or the assembly receiving device, a projection on the assembly receiving device or the element, specifically for engagement in the receptacle, a clamping device for bracing the receptacle and the projection against one another; wherein during the assembly of the element in the assembly receiving device, the projection can be inserted into the receptacle and can be displaced therein in a depth direction up to an assembly position of the projection in the receptacle, wherein the projection and the receptacle can then be braced against each other with the clamping device, through which Bracing the displaceability canceled is, so that the projection and the receptacle are no longer displaceable in the clamped state, wherein when moving the projection along a contact surface of the receptacle or the receptacle runs along a contact surface of the projection and is braced against it when braced and the contact surface is structured in height and the height-structured shape enables a positive fit with the projection or the receptacle with respect to the depth device due to the bracing during displacement at different assembly positions;
as well as through an advantageous use of this device and the form-fitting device.

Preferred refinements are given in the dependent claims.

The wall mounting device according to the invention comprises the element to be mounted and an assembly receiving device which facilitates the assembly of this element, a form-locking device serving to mount the element in the assembly receiving device. The mounting support device can be mounted in a known and conventional manner in the building wall, for. B. by screwing into one of the aforementioned mounting frames.

The assembly receiving device can, however, also be embodied by such a mounting frame, so that the form-locking device is used to mount the element on such a mounting frame.

The interlocking device essentially has a projection and a matching receptacle as well as a clamping device for clamping the two against one another. Either the receptacle is mounted on the element to be mounted and the projection is mounted on the assembly receiving device or vice versa. During assembly, the projection can be inserted into the receptacle and displaced in the depth direction, i.e. approximately perpendicular to the wall plane, the projection and the receptacle preferably already being mounted and the insertion and displacement happening by moving the element to be mounted itself . In a mounting position of the projection in the receptacle, that is to say in a position corresponding to this position of the element to be mounted, the displaceability can then be canceled by bracing. As a rule, the assembly is thus completed, although an additional safety device or the like can of course be considered in principle.

The relative displacement between the projection and the receptacle includes a displacement ("running") of the projection with respect to a contact surface of the receptacle or, conversely, of the receptacle with respect to a contact surface of the projection. According to the invention, this contact surface is structured in height, that is, modulated in a direction perpendicular to the displacement direction and towards the part (projection or receptacle) running along the contact surface or away from it, e.g. B. wavy or toothed.

This height structuring is adapted to the part running along the contact surface in such a way that it can be deformed (this is less preferred) or due to a complementary height structuring of this part even when it is moved along a plurality of parts due to its own singular shape (projection matching the toothing or waviness) moved from positions in which a form fit is possible. In the plurality of positions, the projection and the receptacle can "fit together" in such a way that the clamping device can produce and secure a form fit in the direction of displacement or in the depth direction. During the shift, the form fit does not exist or can only be canceled z. B. due to gravity, otherwise no displacement would be possible.

Because of the plurality of positions to be considered, an adjustment in the depth direction can be carried out by moving, namely by setting the most suitable position and then fixing it with the clamping device. For example, the element to be mounted could with regard to a certain protrusion over a wall front to the outside or with regard to flush with the wall front or, after applying a wall cladding, only then to the actually existing dimensions (new) z. B. be set flush. The invention thus enables adjustment and assembly by a movement in the depth direction with simple clamping.

The projection is preferably implemented by a rail and the receptacle is implemented by a receiving fork that matches the rail. The rail fits between the prongs of the receiving fork. Rail and mounting fork are preferably attached laterally with respect to the depth direction, so for a viewer standing in front of the wall z. B. left and right (and not up and down). Furthermore, the prongs are preferably vertically spaced from one another and thus grip the rail approximately from above and below.

In this case, the tensioning device can act generally and specifically on the width of the projection, that is to say specifically on the rail, the term “width” naturally being understood in a direction perpendicular to the depth direction and preferably vertical.

The clamping device can be realized by a movable wedge that z. B. is moved by a threaded bolt and thus tensioned and engages between parts of the rail to press them apart. Here, the two rail parts can in turn form prongs of a fork shape, as the exemplary embodiment illustrates. The threaded bolt preferably acts transversely to the depth direction and at the same time transversely to the direction of the width of the rail.

An advantageous embodiment provides accessibility of the actuating element of the clamping device, for example an actuating head of the threaded bolt, from within the element to be mounted. So you can z. B. reach into a box as an element to be assembled and use a hexagonal head or other actuating element there to release or tension the clamping device. This applies to the assembly itself, but also to subsequent removal and reinstallation processes.

Furthermore, the actuating element, for. B. the head of the threaded bolt, take on a function within the element to be mounted to hold a built-in part, such as a support for a shelf in a box. This is also shown in more detail in the exemplary embodiment.

The height-structured design of the contact surface on the projection or the receptacle, which is oriented towards a form fit, has already been written above. This contact surface is preferably corrugated or toothed with a series of (also rounded) teeth along the depth direction. A height-structured contact surface can moreover be provided on both sides, that is to say on the projection and the receptacle (in particular the rail and the receptacle fork), the corresponding shapes naturally being intended to match one another. In this case, it can be advantageous to structure at least one of the contact surfaces only along part of the length relevant for running along the projection and receptacle and otherwise to leave it rather smooth. Then a region of the insertion movement which is irrelevant in any case for adjustability can be facilitated and the various assembly positions only arise afterwards.

The element to be mounted can, as already mentioned several times, be a wall installation box that is open at the front and otherwise closed. Other possibilities were mentioned at the very beginning.

The assembly aid in turn can also have a frame or box shape, with z. B. the box is then adapted in terms of format to this frame or the box. The auxiliary assembly device does not necessarily have to be closed to the rear (with respect to the depth direction, i.e. on the side opposite to the wall surface), whereby it is preferably closed there and particularly preferably the auxiliary assembly device is overall watertight. Then the auxiliary assembly device can also serve as a leakage protection or other moisture protection in order to z. B. in the vicinity of a bathroom or another damp environment to avoid damage to inner areas of the wall by penetrating water. This is especially true for wooden structures, but also in principle z. B. for conventional drywall. In this case, a seal can be provided around the front of the auxiliary assembly device (as a box), which seal relates to the transition between the box walls and the wall.

Figur 1

zeigt eine Montagehilfseinrichtung;

Figur 2

zeigt ein Detail aus Fig. 1 unten rechts vergrößert;

Figur 3

zeigt die Montagehilfseinrichtung aus Fig. 1 und 2 eingebaut in einem Montagegestell;

Figur 4

zeigt die Montagehilfseinrichtung aus Fig. 3 nach Anbringung von Wandpaneelen vor dem Montagegestell und der Montagehilfseinrichtung aus Fig. 3 zusammen mit einem davor gezeichneten Kasten als Montageaufnahmeeinrichtung;

Figur 5

zeigt die Situation aus Fig. 4 nach Einbau der Montageaufnahmeeinrichtung in der Wand und in der Montagehilfseinrichtung und nach Verkleiden der Paneele mit Fliesen und darüber hinaus davor eine Einbaubox zum Einbau in die Montageaufnahmeeinrichtung;

Figur 6

zeigt einen mittleren Teil der Fig. 5 vergrößert zur Verdeutlichung einer erfindungsgemäßen Formschlusseinrichtung;

Figur 7

zeigt eine solche Formschlusseinrichtung wie in Fig. 6, allerdings nicht perspektivisch, sondern in Seitenansicht und im eingeführten Zustand;

Figur 8

zeigt eine Schnittdarstellung entsprechend der Linie C-C in Fig. 7;

Figur 9

zeigt die Situation aus Fig. 5 nach Einbau der Einbaubox in der Wand in Verbindung mit Ablageböden;

Figur 10

zeigt den oberen der Ablageböden aus Fig. 9 in der Einbaubox in perspektivischer Ansicht von schräg unten.

The invention is explained in more detail below using an exemplary embodiment. The features contained therein and also the disclosure of the following description are to be understood in principle with regard to all categories of the invention without an explicit distinction being made here between always in detail.

Figure 1

shows an assembly aid;

Figure 2

shows a detail Fig. 1 enlarged lower right;

Figure 3

shows the assembly aid Figs. 1 and 2 built into a mounting frame;

Figure 4

shows the assembly aid Fig. 3 after attaching wall panels in front of the assembly frame and the auxiliary assembly device Fig. 3 together with a box drawn in front of it as an assembly receiving device;

Figure 5

shows the situation Fig. 4 after the installation of the mounting support device in the wall and in the auxiliary mounting device and after the panels have been clad with tiles and in front of it a mounting box for installation in the mounting support device;

Figure 6

shows a middle part of the Fig. 5 enlarged to illustrate a form-locking device according to the invention;

Figure 7

shows such a form-locking device as in Fig. 6 , but not in perspective, but in side view and in the inserted state;

Figure 8

shows a sectional view according to the line CC in FIG Fig. 7 ;

Figure 9

shows the situation Fig. 5 after installing the built-in box in the wall in connection with shelves;

Figure 10

shows the top of the shelves Fig. 9 in the installation box in a perspective view at an angle from below.

Figs. 1, 2 and 3 initially show an assembly aid, namely initially a closed sheet metal frame 1 with a wall in perspective (in Figs. 1 to 3 from below diagonally left) rectangular basic shape and portrait format. The walls of this frame 1 are about 10 mm deep (without the front tabs 3). The frame 1 also has a bent and circumferential flange 2 to the front, with six rectangular sheet metal tabs 3 being recessed from the flange 2 on each of its vertical parts and instead protruding forwards in the depth direction (vertical to the wall plane). Analogously, sheet metal tabs 4 also protrude to the front at the same depth at the top and bottom, but connect the respective uppermost and lowermost lateral tabs 3. These sheet metal tabs 4 are also recessed from the bent flange 2. The sheet metal walls of the frame 1 thus form together with the sheet metal tabs 3 and 4 plate elements in the sense of the claims, which form angle pieces in the corners. With the exception of the foremost level of the tabs 3 and 4, the plate elements merge into one another and form a closed frame; in the foremost level they are interrupted at the vertical edges in order to simplify manufacture. As a result, the bent flange 2 can be produced from the same piece of sheet metal by means of simple punching and bending processes. At the same time, the distances between the tabs 3 are each less than a tenth of the total edge length, which is defined with one another by the respective tabs 3 on the right and left side.

In the lower area, the Fig. 2 shows more clearly, the sheet metal frame 1 is followed by a downwardly open U-profile 5 (in the perspective from the front), which accommodates the depth of the sheet metal frame 1 and corresponds to the flange 2 in width. On the relatively short legs of this U-profile 5 there are projections 6 which protrude vertically downwards relatively far to the front.

Fig. 3 shows the auxiliary assembly device, which is referred to here in summary with 7, in the assembled state between two vertical supports 8 of a conventional assembly frame for sanitary objects. But it could also be a drywall stand or something similar. Two in Fig. 1 Supports 9 visible above and laterally beyond the sheet metal frame 1, which end in vertical contact surfaces 10 which are perpendicular to the wall. With these contact surfaces 10, the assembly aid 7 is in Fig. 3 screwed to the supports 8, the correct position in the depth direction being reached by contacting sheet metal pieces 11 at right angles to the contact surfaces 10 against the supports 8 from behind.

On the other hand, the assembly aid 7 sits in the lower area with the U-profile 5 on a frame 12 which is known per se. Such frame 12 can, for. B. be used to mount a water mixer for a shower or the like and are in this respect in many cases already available. E.g. Such a frame 12 can already have openings provided for other reasons have on its upper side, to which the above-mentioned projections 6 are adapted and in which they can accordingly engage positively (with regard to a horizontal displacement). Thus, the elements 10 and 11 are only necessary in the upper area, these of course also below and thus z. B. can be provided a total of four times if, for example, no frame 12 is available. Instead of the frame 12, however, z. B. a cross member can be mounted between the supports 8 and perform a similar function.

The piece of sheet metal protruding upwards at the rear at the top of the frame 1 also allows, if necessary, the assembly of a fire protection plate closing the frame 1 on the rear.

How out Fig. 3 and also clearly shown in the following description, the sheet metal frame 1 with its side walls and the tabs 3 and 4 in the as yet unfinished drywall keeps free a construction volume still required in the following. In particular, due to its considerable depth (compared to the supports 8), it prevents the building volume from being obstructed with other facilities, in particular the laying of water or electrical lines through the building volume, which could later prevent the installation of the element actually to be installed. This takes into account the fact that different trades often work in parallel on a construction site and in fact also work uncoordinated. Should z. B. an electrical cable are laid transversely behind the sheet metal frame 1, this does not bother, because the depth of the sheet metal frame 1 (including the tabs 3 and 4) is sufficient as a construction volume.

In the in Fig. 3 The state shown, the drywall or pre-wall can be built further in that the usual wall panels 8 are mounted as cladding panels in front of the supports 8, which are typically built in relatively large formats and with horizontal and vertical edges. The tabs 3 and 4 are used to attach wall panels. The latter are pushed towards the straps 3 in the horizontal direction with a vertical delimiting edge and adjusted by abutting them. Conversely, panels with horizontal Boundary edge are pushed up to the tabs 4, in the vertical direction. In any case, it is easy for the drywall builder or other fitter to work in Fig. 4 to create the panel wall 13 shown in such a way that it connects precisely to the front opening of the auxiliary assembly direction 7 defined by the tabs 3 and sheet metal pieces 4. Here, by way of example, another circular opening for a mixer fitting is drawn below the opening, but this does not play an essential role for the invention.

The depths of the tabs 3 and 4 are dimensioned in such a way that they make up at most the thickness of the thinnest possible material of the panels. In no way do they protrude forwards over this wall cladding, but in many cases remain behind the panels in the depth direction, which does not affect their function as a system.

In this state, an in Fig. 4 also and there before the opening of the auxiliary assembly device 7 drawn device are installed. This is a box 14, which consists of deep-drawn plastic and which is provided with three horizontally extending brackets 15 that surround it at the sides and rear. The brackets each end on the front side in end sections 16 parallel to the wall, each with a central mounting hole. This box 14 forms an assembly receiving device in the sense of the above description and can, as Fig. 4 made clear to be pushed into the auxiliary assembly device 7. It is accommodated in it with a slight undersize (i.e. play), but is ultimately mounted on the panel wall 13 by screwing on by means of the mounting holes in the end sections 16 of the clamps 15. A seal, not shown in detail here, can be used to seal the gap between the assembly receiving device (the box) 14 and the auxiliary assembly device 7.

The flange 2 of the auxiliary assembly device 7 proves to be favorable here. It can e.g. B. self-tapping screws are used, which penetrate after passing through the corresponding panel wall of the cladding 13 in the flange and cut a mating thread there. Of course, the flange 2 could also have corresponding holes or threads, the assembly then becoming somewhat more sensitive to adjustment. In addition, the flange 2 could also be replaced by individual tabs, so in the plane of the wall laterally projecting tabs similar to the forward facing tabs 3 and z. B. between these tabs 3.

The panel wall 13 can then be provided with the uppermost wall cladding in a manner known per se, so z. B. with the interposition of sealing layers and the like. E.g. the wall cladding can be made of large tile panels 17 as in Fig. 5 or consist of natural stone slabs or the like. The edge of the box 14 is dimensioned in the depth direction so that it protrudes at most as far as the end sections 16 of the brackets 15 or at most as far as the additional thickness of the thinnest possible material for the top wall paneling. It does not protrude over this top wall cladding forwards, but in many cases remains behind in the depth direction.

In the situation according to Fig. 5 In turn, a built-in box 18 shown there can be inserted as an element to be assembled, the built-in box 18 having a flange that protrudes slightly outward to cover the edges of the uppermost wall cladding 17. In the fully assembled state, only this installation box 18 is visible. Assembly facilities play a role that are already in Fig. 4 and also in Fig. 5 are shown and are explained in more detail with reference to the following figures.

This involves a total of six identical pairs of receptacles, namely receiving forks 19, and projections, namely rails 20, cf. the Figures 6 and 7 . Incidentally, only two pairs of rails 20 are provided on the installation box 18, but six pairs of receiving forks 19 in the box 14. In this exemplary embodiment, this is due to the fact that the latter has a top / bottom symmetry has, so it can also be mounted the other way around, whereas the installation box 18 only requires mounting approximately in the middle and at the bottom.

Fig. 6 shows a detailed perspective view of the receiving forks 19 and the rails 20 in the same perspective as Fig. 5 and Fig. 7 shows a sectional plan view with a cutting plane which runs perpendicular to the wall plane and vertically.

It can be seen that the rail 20 fits between the prongs of the receiving forks 19 and can be pushed in, which corresponds to the installation box 18 being pushed into the assembly receiving device, that is to say the box 14. Fig. 7 shows something more clearly than Fig. 6 that the contact surfaces 21, 22 of the receiving forks 19 and the rail 20 running along one another are each toothed, the outer (in Fig. 7 left) area is toothless. This applies to roughly 20% of the respective length. If the toothed section of the two contact surfaces 22 (top and bottom) of the rail 20 runs along a still toothless part of the contact surfaces 21 of the receiving forks 19 at the beginning of the insertion, this facilitates the insertion. In the area of the actually intended assembly positions, in a somewhat more retracted state than in Fig. 7 shown, are again essentially the toothless sections against one another.

Furthermore, bevels can be seen at the input end of the contact surfaces 21 in the receiving fork 19 to facilitate the introduction of the rail 20.

The rail 20 itself also has a fork shape with two prongs 23, which can be spread apart in their width (vertically in the assembled position) by a wedge 24. This wedge 24 has the shape of a rectangular nut and is in Fig. 7 in plan view and in Fig. 8 to be seen in section along the axis of an associated screw bolt 25, ie corresponding to the section line CC in Fig. 7 . The screw bolt 25 has a hexagon socket engagement on an actuating head, which accordingly Fig. 8 on the opposite side of the wall the installation box 18 is attached to which the rail 20 is mounted. Accordingly, by tightening the bolt 25, the wedge 24 in Fig. 8 be moved to the left and press with his in Fig. 8 clearly recognizable wedge surfaces complementary sloping surfaces on the inner sides of the prongs 23 of the rail 20 apart.

As a result of this bracing, the two prongs 23 are pressed apart, so that the teeth of the contact surfaces 21 and 22 engage one another and a form fit in the depth direction, that is, in the direction in Fig. 7 horizontally to the left or right. Correspondingly, the assembly device comprising the receiving fork 19 and the rail 20 together with the bracing device in the form of the wedge 24 with the screw bolt 25 can be referred to as a form-locking device in the sense of the description above.

It can be seen that the form-fitting device allows the installation box 18 to be simply pushed into the mounting receiving device, that is to say into the box 14, and thereby z. B. the front of the installation box 18 with a flange in a desired manner flush or otherwise to the tile cladding 17 can be adjusted. The desired depth can be easily selected and then fixed in that the actuating heads of the screw bolts are tightened from within the installation box 18, cf. Fig. 9 . This blocks the corresponding form-fitting devices. Correspondingly, the installation box 18 can be removed again the other way around, namely by loosening the screw bolts and pulling them out.

On the other hand, the screw bolt 25 holds the rail 20 on its in the wedge 24 Figures 6 and 7 right end and the rail 20 is held at its left end via a further screw bolt. The actuating heads of the two screw bolts are used according to Fig. 9 as supports for here grid-like built-in parts 26, namely storage shelves. The shelves have according to Fig. 10 downwardly directed U-shaped holding devices into which the operating heads of the screw bolts can engage. So that the bolts meet a Multiple function for holding the shelves 26 and for holding the rails 20 and at the same time, in the form of the screw bolt 25, for bracing the prongs 23 of the rail 20.

As can be seen from the figures, the assembly receiving device 14 also serves as a leak protection in this case, because it is also a waterproof plastic box which is sealed towards the front in a manner not shown. Note that there is a flange on the installation box 18, but not on the box 14.

The latter, in turn, can be fitted in the auxiliary assembly device 7 in a simple manner. This could also be used to fasten the assembly receiving device 14, that is to say the box 14, but this is not the case here. The installation box 18 could in principle also be mounted directly in the auxiliary assembly device 7, specifically also with analog form-locking devices, and the auxiliary assembly device would act as an assembly receiving device according to claim 1. In the present exemplary embodiment, however, the auxiliary assembly device serves firstly to facilitate the panel planking of the drywall, as explained above, and secondly to keep the corresponding surface area in the wall free, as already explained above.

Furthermore, the auxiliary assembly device 7 could of course also be designed as a watertight box or the box 14, if it were provided with appropriate tabs or frame parts, could be installed in front of the cladding.

Claims (15)

1. A wall-mounting device comprising:

   - an element (18) to be mounted on or in a vertical building wall,

   - an assembly receiving device (14) for mounting the element (18) therein and for mounting the assembly receiving device (14) in the building wall,

   - a positive locking device (19, 20) for mounting the element (18) in the assembly receiving device (14), said positive locking device (19, 20) comprising

   a receiving part (19) on the element (18) or on the assembly receiving device,

   a protruding part (20) on the assembly receiving device (14) or on the element, for engaging in the receiving part,

   a clamping device (24, 25) for locking the receiving part and protruding part in place against each other,

   wherein the protruding part (20) is inserted into the receiving part (19) when the element (18) is mounted in the assembly receiving device (14), and can be pushed into said receiving part in a depth direction until the protruding part (20) reaches an assembled position in the receiving part (19),
   wherein the protruding part (20) and receiving part (19) can then be locked in place against each other using the clamping device (24, 25), whereby this locking process stops the protruding part (20) and receiving part (19) being able to move such that they are no longer movable in their locked state,
   wherein during movement the protruding part (20) runs along a contact surface (21) of the receiving part (19) or the receiving part (19) runs along a contact surface (22) of the protruding part (20), and on locking in place they are locked in place against each other,
   and wherein the contact surface (21, 22) is structured in height and the structured in height design enables positive locking with the protruding part (20) or receiving part (19) in various assembled positions, relative to the depth direction, as the protruding part or receiving part moves.
2. The wall-mounting device according to claim 1, wherein the protruding part (20) is formed by a rail mounted laterally relative to the depth direction and the receiving part (19) is formed by a receiving fork which fits the rail, wherein the tines of the receiving fork are preferably at a distance from each other vertically.
3. The wall-mounting device according to claim 1 or 2, wherein the protruding part (20), in particular the rail according to claim 2, has the clamping device (24, 25), and the clamping device (24, 25) can alter a width of the protruding part (20) or the rail relative to a direction perpendicular to the depth direction, preferably vertically.
4. The wall-mounting device according to claims 2 and 3, wherein the clamping device (24, 25) has a wedge (24) which is pressed between parts (23) of the rail (20) upon locking in place, thus pressing apart the rail parts (23), thereby increasing the width of the rail (20), wherein the rail (20) preferably also has a fork shape and the rail parts (23) form the tines of said fork shape.
5. The wall-mounting device according to claim 4, wherein the wedge (24) can be actuated by means of a threaded bolt which preferably acts transversely to the depth direction and transversely to the width direction of the rail (20).
6. The wall-mounting device according to one of the preceding claims, wherein an actuation element (25) of the clamping device (24, 25), in particular the threaded bolt according to claim 5, can be accessed from inside the element (18) to be mounted.
7. The wall-mounting device according to claim 6, wherein the actuation element (25) forms a support for a built-in part (26) for integration into the element (18), preferably for a storage shelf therein.
8. The wall-mounting device according to one of the preceding claims, wherein the contact surface (21, 22) structured in height is corrugated or toothed with a series of teeth along the depth direction.
9. The wall-mounting device according to one of the preceding claims, wherein a respective contact surface (21, 22) structured in height is provided both on the protruding part (20), in particular the rail according to claim 2, and on the receiving part (19), in particular the receiving fork according to claim 2.
10. The wall-mounting device according to one of the preceding claims, wherein the contact surface (21, 22) is only structured in height in one section of its extent in the depth direction, wherein as the protruding part (20) is inserted into the receiving part (19) the part (22, 21) of the receiving part (19) or protruding part (20) complementary to the contact surface (21, 22) initially runs along the non-corrugated part of the contact surface (21, 22) and then subsequently runs along the corrugated part of the contact surface (21, 22).
11. The wall-mounting device according to one of the preceding claims, wherein the element (18) to be mounted is a box to be mounted inside the wall which, apart from an opening on the front, is otherwise enclosed.
12. The wall-mounting device according to one of the preceding claims, wherein the assembly receiving device (14) is a frame or cabinet which has an opening on the front for inserting the element (18) and is enclosed at the sides relative to the depth direction.
13. The wall-mounting device according to claim 12, wherein the cabinet is enclosed to the rear and is generally watertight.
14. Use of a wall-mounting device according to one of the preceding claims, wherein the assembly receiving device (14) is mounted on or in the wall,
    the element (18) is then inserted into the assembly receiving device (14) and
    in the process the element (18) to be mounted is adjusted in the depth direction in the assembly receiving device (14) as a result of the protruding part (20) and receiving part (19) moving relative to each other until an assembled position is reached and
    the protruding part (20) and the receiving part (19) are then locked in place against each other using the clamping device (24, 25) and prevented from moving as a result of this locking process.
15. Use of a positive locking device (19, 20) as part of a wall-mounting device according to one of claims 1 to 13, wherein the positive locking device (19, 20) comprises a receiving part (19) for mounting on the element (18) or on the assembly receiving device (14), a protruding part (20) for complementary mounting on the assembly receiving device (14) or on the element (18) and provided for engaging in the receiving element (19), and a clamping device (24, 25) for locking the receiving part (19) and protruding part (20) in place against each other, wherein the protruding part (20), after insertion into the receiving part (19), can be moved therein in a depth direction relative to the installed state, before it is locked into position in the receiving part (19) by the clamping device (24, 25) thereby stopping any movement therebetween, and wherein during movement the protruding part (20) runs along a contact surface (21) of the receiving part (19) or the receiving part (19) runs along a contact surface (22) of the protruding part (20), and the contact surface (21, 22) is structured in height so that positive locking between the protruding part (20) and the receiving part (19) is enabled in various assembled positions, relative to the depth direction, through said movement and locking into place.

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