AU2015266275B2

AU2015266275B2 - Mounting device

Info

Publication number: AU2015266275B2
Application number: AU2015266275A
Authority: AU
Inventors: Peter Lechner
Original assignee: Geberit International AG
Current assignee: Geberit International AG
Priority date: 2014-05-26
Filing date: 2015-05-13
Publication date: 2019-05-23
Anticipated expiration: 2035-05-13
Also published as: EP3071757B1; AU2015266276B2; DK3071757T3; AU2015266275A1; AU2015266276A1; WO2015180962A1; EP3071757A1; PL3149251T3; PL3071757T3; EP3149251A1; WO2015180963A1; DE202015009052U1; EP3149251B1

Abstract

The invention concerns a mounting device (1) for positioning and securing a sanitary appliance (2), more specifically a water-closet bowl, said device comprising a frame (3) for supporting the sanitary appliance (2), with at least two or exactly two mutually spaced vertical braces (4) and at least one or exactly one cross beam (5), which is secured to the vertical braces (4) and links the vertical braces (4) to one another. The cross beam (5) comprises at least one securing element (23), with which the sanitary appliance (2) can be secured to the mounting device (1). In addition, the frame (3) comprises at least one support element (6), which is secured to the cross beam (5) and to one of the vertical braces (4).

Description

TITLE

Mounting device

TECHNICAL FIELD

The present invention relates to a mounting device in accordance with the preamble of claim 1.

PRIOR ART A mounting device of this kind has been disclosed in the prior art by EP 1 936 052. This mounting device comprises a mounting frame, which is to be secured to a building wall, and has just a single foot pad, by means of which the mounting device rests on the floor. At the top region, the mounting frame is connected to the building wall by wall anchors, while a securing plate is additionally provided at the bottom region.

The mounting device according to EP 1 936 052 is accordingly supported by means of the wall anchors, the securing plate and the single foot pad.

The mounting device according to EP 1 936 052 is normally used for wall-mounted sanitary appliances. Consequently, the components of the mounting device must have the appropriate dimensions. EP 2 662 502 discloses a floor-mounted mounting device which can stand on the floor by means of foot pads.

Although very good results have been obtained with the mounting devices according to EP 1 936 052 and EP 2 662 502, it is desirable to have more space to allow the passage of various pipes while retaining the same stability in the region where the pipes are passed through. Between the supports, the region where the pipes are passed through is at a height of up to about 70 cm in the case where a toilet is fitted or up to about 120 cm in the case where a washbasin is fitted.

DESCRIPTION OF THE INVENTION

Starting from this prior art, it is an underlying object of the invention to specify a mounting device which overcomes the disadvantages of the prior art. In particular, the intention is to specify a mounting device which can be used more flexibly.

This object is achieved by the subject matter as claimed in claim 1. Accordingly, a mounting device for positioning and securing a sanitary appliance, in particular a toilet bowl, comprises at least two or exactly two mutually spaced vertical struts. The vertical struts are connected to one another by at least one or exactly one hollow body. The hollow body comprises at least one securing element, by means of which the sanitary appliance can be secured to the mounting device.

Using a hollow body, which can also be referred to as a box-type body, increases flexibility in use. In particular, the hollow body, in contrast to a cross beam, can be adapted very easily to new shapes of sanitary appliances, thereby making it a very simple matter to improve support of the body. Thus, design freedom is increased. Moreover, the provision of a hollow body makes it possible to dispense with the provision of a plurality of cross beams, as known from the prior art.

It is an additional object to specify a mounting device which allows pipes to be passed through between the vertical struts in a more flexible manner, in particular without impairing the stability of the mounting device. For this purpose, the hollow body comprises an aperture, which extends through the hollow body and provides a free interspace, through which a drainage pipe can be passed, wherein the aperture is preferably V-shaped or trapezoidal. The aperture is arranged in such a way that the hollow body has a web region above the aperture.

When viewed in the installed position, the aperture passes through the hollow body preferably from below and is of downwardly open design.

The aperture can be arranged flexibly in the hollow body and extends substantially completely through said body. Thus, the aperture passes through the hollow body and reduces the volume thereof. The aperture is preferably arranged in such a way that it extends from the outside into the hollow body, with the result that said body is open in the region where the aperture extends into it. The aperture can also be referred to as a recess which extends into the hollow body.

As a particularly preferred option, the aperture extends from a starting point centrally between the two vertical struts, at an angle to the vertical struts in each case, with the result that the cross section of the aperture becomes larger with increasing distance, when viewed in the direction of the vertical struts away from the central point. Said V-shaped aperture is thereby provided. The aperture can be of rounded or flattened design at the tip of the V.

The hollow body preferably comprises a front wall and a rear wall arranged at a distance from the front wall. The front wall and the rear wall are connected by means of their lateral edges facing the vertical strut to the respective vertical strut. The front wall and the rear wall are connected by at least one reinforcing profile and/or at least one reinforcing rib.

The reinforcing profile and/or the reinforcing rib preferably extend along the free lateral edges, which are not connected to the vertical strut. The reinforcing profile and the reinforcing rib, respectively, are then preferably arranged in such a way that they provide a side wall or side walls which connect the front wall and the rear wall.

In addition or as an alternative, however, reinforcing profiles and reinforcing ribs, respectively, can also be arranged in other regions of the front wall and of the rear wall. For example, in the two-dimensionally extended regions.

In this embodiment, the hollow body is thus defined and delimited by the front wall, the rear wall, the reinforcing profile which provides the side walls or the reinforcing rib which provides the side walls, and the vertical struts. In this embodiment, the hollow body is surrounded substantially completely by said walls, and it is also possible to refer to a substantially closed hollow body. In this context, however, the expression "closed" does not exclude the presence of openings in the respective walls as well, providing access to the cavity, e.g. to the securing means.

In an alternative embodiment, the hollow body is designed to be open, without a reinforcing profile and/or reinforcing rib, at at least one lateral edge. It is thereby possible to optimize the weight of the mounting device. Moreover, it is also possible to provide simple access to the interior.

The hollow body is preferably connected to the vertical struts by its front wall and the rear wall. As a particularly preferred option, the vertical struts have mutually facing surfaces, wherein the hollow body is connected to the respective vertical strut by means of these surfaces.

In respect of the at least one securing element, the hollow body preferably extends substantially downward or substantially upward in the installed position. As an alternative, in respect of the at least one securing element, the hollow body extends upward and downward.

The maximum extent of the hollow body, when viewed in the direction of the longitudinal axis of the vertical struts, is preferably in a range of from 150 mm to 500 mm, in particular in a range of from 200 mm to 400 mm. As a particularly preferred option, the extent is 400 mm when the hollow body extends upward and downward in respect of the securing elements, as described above, or 250 mm when the hollow body extends upward or downward in respect of the securing elements, as described above. The hollow body has a shorter extent than the vertical struts in the direction of the longitudinal axis of the vertical strut.

The at least one securing element is arranged at least partially, preferably completely, within the hollow body, wherein the hollow body has openings which provide access to the securing element. The openings are preferably arranged in the front wall and optionally arranged in the rear wall. Arranging the securing elements in the interior of the hollow body has the advantage that the securing elements can be connected both to the front wall and to the rear wall, allowing good introduction of the forces into the hollow body.

The securing element preferably has a threaded opening, into which a threaded rod can be screwed, which can be connected to the sanitary appliance.

Said openings, which provide access to the securing element, are preferably arranged in such a way that they provide a passage through the hollow body.

As a particularly preferred option, at least two or exactly two securing elements are arranged at a distance from one another, which two securing elements are preferably arranged at the side of the aperture. However, the aperture does not extend between the securing elements.

As a particularly preferred option, the front surface of the vertical struts defines a front plane, and the rear surface of the vertical struts defines a rear plane, wherein the hollow body is situated between these two planes or congruently with these planes. As an alternative, the hollow body is flush with the front plane or between the front plane and the rear plane on one side, and the hollow body protrudes beyond the rear plane on the other side. This increases design freedom.

The hollow body is preferably made of metal and is connected materially, in particular by means of a welded joint, and/or positively or in a force-fit manner to the vertical strut. As an alternative, the hollow body is made of plastic and is connected positively and/or in a force-fit manner to the vertical struts.

The at least one securing element is preferably in contact with a threaded rod, which projects substantially perpendicularly relative to the frame and to the vertical strut and can be brought into contact with the sanitary appliance.

Preferably, at least one, preferably each, of the vertical struts is connected to a foot pad, via which foot pad the mounting device rests on a floor, wherein the foot pad is preferably designed in such a way that it can be moved relative to the vertical strut and can be locked relative to the vertical strut.

In addition to the connecting hollow body, the vertical struts are preferably connected at the respective upper end to a connecting bar.

The front wall and/or the rear wall of the hollow body preferably have bends and/or beads, which reinforce the hollow body. The bends or beads increase the stiffness of the hollow body. As a particularly preferred option, the front wall is designed as a flat wall and the rear wall has corresponding bends or beads. This is advantageous for the support of the sanitary appliance.

An arrangement comprises a mounting device in accordance with the above description and a sanitary appliance mounted on the mounting device and having a supporting surface, wherein the supporting surface overlaps at least parts of the hollow body. Here, the overlap can be seen in projection at right angles to the front plane defined by the front surfaces of the vertical strut. By virtue of the overlap, the sanitary appliance can be supported on the hollow body directly or via a partition wall situated between the sanitary appliance and the hollow body. In this connection, it is also possible to refer to a sanitary appliance support in the form of a box or a hollow body.

The arrangement furthermore preferably comprises a flushing cistern, which is situated above the hollow body between the vertical struts.

Further embodiments are given in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention are described below with reference to the drawings, which are intended only for explanation and should not be interpreted as restrictive. In the drawings:

Figure 1 shows a perspective front view of a mounting device according to the invention for securing a sanitary appliance according to a first embodiment;

Figure 2 shows a perspective rear view of the mounting device shown in figure 1;

Figure 3 shows a perspective front view of a mounting device according to the invention for securing a sanitary appliance according to a second embodiment;

Figure 4 shows a perspective rear view of the mounting device shown in figure 3; Figure 5 shows a perspective front view of a mounting device according to the invention for securing a sanitary appliance according to a third embodiment; and

Figure 6 shows a perspective rear view of the mounting device shown in figure 5.

DESCRIPTION OF PREFERRED EMBODIMENTS

Three different embodiments of a mounting device 1 for positioning and securing a sanitary appliance 2 are shown in figures 1 to 6. In respect of all the embodiments, identical parts are provided with identical reference signs in all the figures. In the installed state, the mounting device 1 is typically arranged behind a partition wall. The sanitary appliance 2 is a toilet bowl, for example, but it can also be a washbasin or similar. In the figures, the sanitary appliance 2 is illustrated schematically by a peripheral line. The peripheral line corresponds substantially to the contact area of the sanitary appliance with the partition wall.

The mounting device 1 according to the invention, which is shown in figures 1 to 6, comprises at least two or exactly two mutually spaced vertical struts 4 and a hollow body 10, which is arranged between the two vertical struts 4. The vertical struts 4 are connected to one another by the hollow body 10. In other words, the vertical struts 4 and the hollow body 10 provide a frame 3 which supports the sanitary appliance 2. The hollow body 10 is connected in a fixed manner to the vertical struts 4 and connects the vertical struts 4 to one another.

The hollow body 10 is preferably situated at a distance from the ends of the vertical strut 4, thus providing an H-shaped structure, wherein the hollow body 10 has an extent in the direction of the longitudinal axes of the vertical struts 4 which is in a range of from 150 mm to 500 mm, in particular in a range of from 200 mm to 400 mm. The extent is particularly preferably 400 mm or 250 mm.

In the embodiment shown, the frame 3 comprises exactly two mutually spaced vertical struts 4 and exactly one hollow body 10 connecting the vertical struts 4.

The mounting device furthermore comprises at least one securing element 23, in this case two securing elements 23 arranged at a distance from one another, by means of which the sanitary appliance 2 can be secured to the mounting device 1. The securing element 23 is connected in a fixed manner to the hollow body 10 and is preferably arranged at least partially, preferably completely, within the hollow body 10, wherein the hollow body 10 has openings 5 which provide access to the securing element 23.

The securing elements 23 are preferably openings or threaded openings, through which preferably a threaded rod can be passed.

Forces result from the imposition of loads on the hollow body 10 via the securing elements 23 on which the sanitary appliance 2 is secured, and these forces are introduced into the vertical struts 4 via the hollow body 10. The provision of the at least one hollow body 10 makes it possible to dispense with the arrangement of additional elements, e.g. a cross beam, between the two vertical struts to absorb significant forces. In other words, the hollow body 10 makes it possible to provide just one element which absorbs significant forces resulting from the sanitary appliance and the user.

All the embodiments, as shown in figures 1 to 6, preferably have an aperture 7 in the hollow body 10. The aperture 7 passes completely through the hollow body 10, thereby creating a free interspace through the hollow body 10, through which a drainage pipe can be passed. In the embodiments shown in the figures, the aperture 7 has the shape of an inverted V or of a trapezoid. As shown in figures 1 and 2, the base of the V can be of flat design, or, as shown in figures 3 to 6, it can be of rounded design. The aperture 7 is arranged in such a way that the hollow body 10 has a web region 27 above the aperture.

In all embodiments of the mounting device according to the present invention, the external geometry of the hollow body 10 is substantially the same in respect of the aperture 7. The aperture 7 is angled relative to the vertical strut 4 on both sides. In this case, the angular slope is such that the distance A between the lateral edge of the aperture 7 and the vertical strut 4 becomes smaller with increasing distance B from the upper edge 9 of the hollow body 10. In other words, the interspace between the two support elements 6 becomes larger with increasing distance from the securing elements 23.

The free interspace created by the aperture 7 is designed as a free interspace inasmuch as no elements of the mounting device 1 or of the frame 2 pass through this free interspace. Through this free interspace 7 it is possible, for example, to pass a pipe which is connected to the sanitary appliance 2. E.g. for waste water or for fresh water.

Relative to the aperture 7, two securing elements 23 are arranged on the left and right of, and somewhat above, the aperture 7 in the embodiments shown. In other words, when viewed in the installation position, the securing element 23 is situated in the region of action of those regions of the hollow body 10 which are adjacent to the aperture 7. Particularly good introduction of the force resulting from the sanitary appliance 2 into the hollow body 10 can thereby be achieved. It is also preferably possible for a plurality of securing elements 23 to be arranged adjacent to one another.

In all the embodiments according to the invention, the front surface 19 of the vertical struts 4 defines a front plane 20. The hollow body 10 is formed flush with the front plane 20. In other words, no parts of the hollow body 10 project through the front plane 20, this having the advantage that a defined plane, which is a reference plane for the fitter during installation, can be created with the hollow body 10.

The same preferably also applies to the rear side of the mounting device 1, although in this case the various embodiments differ from one another. In the embodiment shown in figures 1 and 2, the hollow body 10 is flush both with the rear plane 22 and with the front plane 20. In the embodiment shown in figures 3 and 4, parts of the support element 6 protrude beyond the rear plane 22 formed by the rear surface 21 of the vertical struts 4. In relation to the front plane 20, the support element 6 is made flush, however. The same can be said of the embodiment shown in figures 5 and 6.

The construction of the preferred hollow body will now be described in greater detail below with reference to figures 1 to 6. A hollow body 10 is essentially taken to mean a hollow body which is delimited either entirely or partially by structural elements. Here, the structural elements delimit an interior space.

The hollow body 10 has a front wall 11 and a rear wall 12 arranged at a distance from the front wall 11. The front wall 11 and the rear wall 12 are connected by means of the lateral edges 13 facing the vertical struts 4 to the respective vertical strut 4. In the embodiment under consideration, the lateral edge 13 of the front wall 11 and of the rear wall 12, respectively, is vertical and is preferably connected to the vertical strut 4 over the entire length. As a particularly preferred option, a weld seam is provided along the entire length of the respective lateral edge 13, connecting the front wall 11 and the rear wall 12 to the vertical strut 4.

The front wall 11 and the rear wall 12 themselves are furthermore connected to one another. For example via a reinforcing profile 15 and/or at least one reinforcing rib 16. The reinforcing profile 15 and the reinforcing rib 16 are situated between the front wall 11 and the rear wall 12.

Thus, the hollow body is formed essentially by the front wall 11, the rear wall 12, the reinforcing profile 15 or reinforcing rib 16 and the vertical struts 4.

In the embodiment shown in figures 1 and 2, a reinforcing rib 16 is provided. In figure 1, the reinforcing rib 16 is clearly apparent on the right-hand side of the hollow body 10. Here, the front wall is shown partially broken away. Here, the reinforcing rib 16 extends along the lateral edges 17, 18, which are not connected to the vertical strut 4. Here, the reinforcing rib 16 extends completely over the corresponding lateral edges 17, 18 of the front wall 11 and the rear wall 12, respectively. In the embodiment shown, the reinforcing ribs 16 are thus arranged flush with the lateral edges 17, 18. In other embodiments, the reinforcing ribs 16 can also be arranged at a distance from the lateral edges 17, 18, or it is also conceivable for a plurality of reinforcing ribs 16 to be arranged at a distance from one another between the front wall 11 and the rear wall 12. The hollow body is shown open toward the top. However, it would also be conceivable to provide a reinforcing rib along the upper lateral edge 14, which closes the interior from the top.

In the embodiment shown in figures 3 and 4, a reinforcing profile 15 of substantially ll-shaped design is shown. In this case, the reinforcing profile 15 extends in the same way as reinforcing rib 16 and attention is drawn to the description thereof.

In the embodiment shown in figures 5 and 6, there is once again a reinforcing rib 16, which connects the front wall 11 to the rear wall 12 of the hollow body 10, wherein, here too, attention is once again drawn to the above description.

As already explained above, it is advantageous for the hollow body 10 not to extend over the front plane 20 extending across the front surface 19 of the vertical struts 4. In the embodiments shown in figures 1 and 2, the hollow body 10 also does not extend over the rear plane 22 defined by the rear surface 21 of the vertical struts 4. Thus, the hollow body lies between the front plane 20 and the rear plane 22. As a particularly preferred option, the front wall 11 of the hollow body 10 is congruent with the front plane 20, and the rear wall 12 thereof is congruent with the rear plane 22.

Depending on the embodiment of the hollow body, it may be necessary to reinforce the vertical struts 4. In the second embodiment shown in figures 3 and 4, support plates 35 are provided for reinforcing the vertical struts 4. Here, the support plates 35 extend beyond said rear plane 22.

In the embodiment shown in figures 5 and 6, the front wall 11 of the hollow body 10 is congruent with the front plane 20 and the rear wall 12 of the hollow body 10 is at a distance from the rear plane 22. Therefore, the hollow body 10 penetrates the rear plane 22.

The embodiment shown in figures 5 and 6 has the advantage that the hollow body can be designed with reinforcing measures in the region of the rear wall 12. Here, the hollow body has bends 30, for example, which have a reinforcing effect on the hollow body. It is also possible to provide beads or similar elements instead of or in addition to the bends 30.

On the rear side, the hollow body according to the embodiment in figure 6 has an additional aperture 29, which extends into the hollow body 10 from above. The aperture 29 then opens via an opening 8 through the front wall 11 and is used to receive a conduit between the flushing cistern and the sanitary appliance 2.

As a particularly preferred option, the hollow body 10 is made of metal in all the embodiments and can be connected materially, in particular by means of a welded joint, and/or positively or in a force-fit manner to the vertical strut 4. The front wall 11 and the rear wall 12 are welded to the vertical strut 4.

As an alternative, the hollow body 10 can also be made of plastic and, in this case, can be connected positively and/or in a force-fit manner to the vertical strut 4. The embodiment shown in figures 5 and 6, in particular, is suitable for construction from plastic.

The at least one securing element 23 preferably has a threaded opening 31, which serves to receive a threaded rod. In this case, the threaded rod, which is not shown here, projects substantially perpendicularly from the vertical strut 4 and can be brought into contact with the sanitary appliance 2.

As a particularly preferred option, each of the vertical struts 4 has a foot pad 24. Via the foot pad 24, the mounting device 1 rests on a floor. As a particularly preferred option, the foot pads 24 are designed in such a way that they can be moved relative to the vertical strut 4 and can be locked relative to the vertical strut 4. In the embodiment under consideration, the foot pad 24 projects into the vertical strut 4 and can be locked to the vertical strut 4 by means of a fastening screw 32. In other words, the foot pad 24 is designed in such a way that it can be moved relative to the vertical strut 4 and can be fixed relative to the vertical strut 4.

In addition to said hollow body 10, the embodiments shown in the figures furthermore have a connecting bar 33. The connecting bar 33 is arranged at the upper end of the respective vertical strut 4. In comparison with the cross beam, however, the connecting bar 33 does not bear any significant forces but serves essentially to stabilize the mounting device before installation.

LIST OF REFERENCE SIGNS 1 mounting device 29 aperture 2 sanitary appliance 30 bends 3 frame 31 threaded opening 4 vertical strut 32 screw 5 openings 33 connecting bar 7 aperture 34 upper end 8 opening 9 upper edge A distance 10 hollow body B distance 11 front wall 12 rear wall 13 lateral edge 14 lateral edge 15 reinforcing profile 16 reinforcing rib 17 spaced lateral edge 18 spaced lateral edge 19 front surface 20 front plane 21 rear surface 22 rear plane 23 securing part 24 foot pad 27 contact surface

Claims

PATENT CLAIMS

1. A mounting device for positioning and securing a sanitary appliance, in particular a toilet bowl, said device comprising at least two or exactly two mutually spaced vertical struts, wherein the vertical stmts are connected to one another by at least one or exactly one single hollow body and in that the hollow body comprises at least one securing element, by means of which the sanitary appliance can be secured to the mounting device, and wherein in respect of the at least one securing element, the hollow body extends substantially downward.
2. The mounting device as claimed in claim 1, characterized in that the hollow body comprises an aperture, which provides a free interspace through the hollow body, through which a drainage pipe can be passed, wherein the aperture is preferably V-shaped or trapezoidal and, in the installed position, preferably extends into the hollow body from below.
3. The mounting device as claimed in one of the preceding claims, characterized in that the hollow body has a front wall and a rear wall arranged at a distance from the front wall, which front wall and rear wall are connected by means of their lateral edges facing the vertical stmt to the respective vertical stmt, and in that the front wall and the rear wall are connected by at least one reinforcing profile and/or at least one reinforcing rib.
4. The mounting device as claimed in claim 3, characterized in that the reinforcing profile and/or the reinforcing rib extend along the free lateral edges, which are not connected to the vertical stmt.
5. The mounting device as claimed in claim 3 or 4, characterized in that the hollow body is designed to be open, without a reinforcing profile and/or reinforcing rib , at at least one lateral edge.
6. The mounting device as claimed in one of preceding claims 1 to 4, characterized in that the hollow body is designed as a substantially completely closed hollow body.
7. The mounting device as claimed in one of the preceding claims, characterized in that the maximum extent of the hollow body, when viewed in the direction of the longitudinal axis of the vertical stmts, is in a range of from 150 mm to 500 mm, in particular in a range of from 200 mm to 400 mm, particularly preferably 400 mm or 250 mm.
8. The mounting device as claimed in one of the preceding claims, characterized in that the at least one securing element is arranged at least partially, preferably completely, within the hollow body, wherein the hollow body has openings which provide access to the securing element.
9. The mounting device as claimed in claim 8, characterized in that the openings are arranged in such a way that they provide a passage through the hollow body.
10. The mounting device as claimed in one of claims 2 to 9, characterized in that two securing elements are arranged at a distance from one another, which two securing elements are arranged to the side of the aperture.
11. The mounting device as claimed in one of the preceding claims, characterized in that the front surface of the vertical stmts defines a front plane, and in that the rear surface of the vertical stmts defines a rear plane, wherein the hollow body lies between said two planes or is congment with said planes, or wherein the hollow body is flush with the front plane on one side or lies between the front plane and the rear plane and protmdes beyond the rear plane on the other side.
12. The mounting device as claimed in one of the preceding claims, characterized in that the hollow body is made of metal and is connected materially, in particular by means of a welded joint, and/or positively or in a force-fit manner to the vertical stmt, or in that the hollow body is made of plastic and is connected positively and/or in a force-fit manner to the vertical strut.
13. The mounting device as claimed in one of the preceding claims, characterized in that at least one, preferably each, of the vertical struts is connected to a foot pad, via which foot pad the mounting device rests on a floor, wherein the foot pad is preferably designed in such a way that it can be moved relative to the vertical strut and can be locked relative to the vertical strut.
14. The mounting device as claimed in one of the preceding claims, characterized in that the front wall and/or the rear wall of the hollow body have bends and/or beads, which reinforce the hollow body.
15. An arrangement comprising a mounting device as claimed in one of the preceding claims and a sanitary appliance mounted on the mounting device and having a supporting surface, wherein the supporting surface overlaps parts of the at least one hollow body.