PIPE CONNECTION ARRANGEMENT

Description

TECHNICAL FIELD

[0001] The present invention relates to a pipe connection arrangement according to claim 1, a wall arrangement according to claim 14 and a method according to claim 15 STATE OF THE ART

[0002] Prefabricated bathroom units are well-known in the art. The bathroom units are prefabricated to such an extent that they essentially still need to be connected to the fresh water supply, wastewater disposal, and energy supply during installation. Such bathroom units are constructed from concrete, for example. Before the concreting process, all supply and disposal pipes are placed in a concrete formwork and then encased in concrete. Pipe connectors and associated pipes are also embedded for this purpose. At the final location, the existing supply and disposal pipes can then be connected to the embedded pipes via the pipe connectors.

[0003] With pipe connectors or fittings that are embedded in the wall, the problem is that when connecting the water pipe via a twisting motion, the pipe connector can break out of the wall. This causes the pipe connector to twist relative to the wall and can detach from the fixtures connected to the fitting inside the bathroom unit, which can lead to leaks and thus water damage.

[0004] The documents EP 1 484 544, EP 3 404 149 and DE 86 03 097 U1 each show a pipe connection arrangement according to the preamble of claim 1. However, these are not suitable for being embedded in walls. PRESENTATION OF THE INVENTION

[0005] Based on this prior art, the invention is based on the object of specifying a pipe connection arrangement that overcomes the disadvantages of the prior art. In particular, the pipe connection arrangement should be designed such that the pipe connection arrangement remains undamaged when a pipe is screwed in. This object is achieved by the subject matter of claim 1. Accordingly, a pipe connection arrangement for a wall structure comprises a pipe connection piece and a bearing element. The pipe connection piece comprises a side wall that delimits a pipe channel, a press contour arranged on the side wall, via which the pipe connection piece can be connected to a first pipe, a threaded structure arranged on the side wall for connecting the pipe connection piece to a second pipe, and a bearing section arranged on the outside of the side wall.The bearing element comprises a bearing opening extending along a central axis, which is bounded on the outside by a wall, and at least one anti-rotation element extending radially away from the wall toward the central axis. The pipe connection piece can be inserted into the bearing opening with its bearing section and, when inserted, is mounted in a rotationally fixed manner in the bearing opening of the bearing element. In the installed state, the at least one anti-rotation element can be extended into the wall structure such that a force acting on the threaded structure can be introduced into the wall structure via the anti-rotation element.

[0006] When installed, the at least one anti-rotation element extends at least partially or completely into the wall structure.

[0007] According to the invention, the anti-rotation element has at least one main surface lying in a plane that extends at an angle to the central axis. Preferably, the main surfaces of all anti-rotation elements are at the same angle to the central axis.

[0008] By extending the anti-rotation element into the wall structure, the force acting on the threaded structure can be effectively transferred into the wall structure. In other words, this provides increased resistance to force application.

[0009] When installed, the bearing element is at least partially embedded in a wall structure. The at least one anti-twist element, which protrudes radially from the wall, is also at least partially, but preferably completely, embedded in the wall structure. The anti-twist element provides the bearing element with an element that provides greater resistance to acting torques or other forces. Such a torque or force acts on the bearing element, for example, when the second pipe is connected to the threaded structure. The torque or force is then passed on from the pipe connector to the bearing element via the rotationally fixed bearing of the pipe connector in the bearing opening. The anti-twist element ensures good force introduction into the wall structure.

[0010] The wall structure is preferably a cast concrete wall. However, the wall structure can also be made of another material.

[0011] The pipe connector is preferably made of metal, such as brass or gunmetal. The bearing element is preferably made of plastic, such as acrylonitrile butadiene styrene copolymer.

[0012] The threaded portion is preferably an internal thread located on the inside of the side wall. The pressing contour is preferably located on the outside of the side wall.

[0013] Preferably, a central axis extends through the pipe channel. Preferably, the side wall extends around a central axis. Preferably, the pressing contour and the threaded portion are offset from one another in the direction of the central axis or in the flow direction of the pipe channel.

[0014] The anti-rotation element is preferably integrally formed on the wall. The bearing element is preferably formed in one piece.

[0015] Preferably, a plurality of anti-rotation elements are arranged, wherein the anti-rotation elements are preferably arranged at regular intervals around the central axis.

[0016] Particularly preferably, three or four anti-rotation elements are arranged.

[0017] Preferably, the anti-rotation element is designed as a flat wall section which is formed on an outer side of the wall.

[0018] The anti-rotation element extends radially from the outside of the wall.

[0019] Preferably, the anti-rotation element has a free end opposite its molding point on an outer side of the wall. The term "free end" is understood to mean that the anti-rotation element has no further elements at its end.

[0020] Preferably, the molding point has a concave, rounded transition from the wall section to the outer surface. This mechanically reinforces the molding point.

[0021] The central axis and the said plane are arranged relative to each other such that the central axis intersects the plane at an angle. The angle between the plane and the central axis is preferably between 30° and 60°, in particular between 40° and 50°.

[0022] The anti-rotation element preferably has two main surfaces that are spaced apart from one another and run parallel to one another. These main surfaces are connected to one another by side surfaces.

[0023] Preferably, the angular inclination of the main surface to the central axis with respect to the threaded structure of the pipe connection piece is oriented such that the torque generated during a connection process of the second pipe causes a force on the anti-rotation element into the wall structure.

[0024] This means that during the assembly process of the second pipe, a force is created which, due to the orientation of the anti-rotation element, causes the bearing element to experience a force into the wall structure.

[0025] In other words, the main surface runs at an angle inclined to the central axis, with the angle increasing from the beginning of the thread to the central axis in the pitch direction of the thread.

[0026] Preferably, the anti-rotation elements have a length from the wall to the free end which is between 75% and 100% of the distance between two surfaces arranged opposite each other with respect to the central axis.

[0027] Preferably, the anti-rotation elements extend to a circle that spans the central axis of the bearing opening, wherein the circle preferably has a diameter in the range of 5 to 10 centimeters, in particular in the range of 6 to 9 centimeters.

[0028] The wall of the bearing element preferably has a plurality of flat surfaces distributed around the circumference, with their surface normals preferably oriented at right angles to the central axis, and with one of the anti-rotation elements arranged on each of the surfaces or on every other surface. The surfaces are preferably evenly distributed around the circumference. This design has the advantage that the wall itself also provides resistance to the torque acting on the pipe connection piece.

[0029] In other words, this means that the wall of the bearing element in the region of the forming point of the anti-rotation element is designed as a flat surface whose surface normal is preferably oriented at right angles to the central axis.

[0030] Preferably, the bearing section has at least one flat bearing surface whose surface normal lies perpendicular to the central axis of the pipe channel. The bearing opening has at least one flat bearing surface whose surface normal lies perpendicular to the central axis. The two bearing surfaces abut one another when the pipe connection piece is in the bearing opening.

[0031] Preferably, several storage areas are arranged at equal intervals around the circumference.

[0032] The bearing opening is preferably designed as an internal polygon with a number of bearing surfaces corresponding to the number of edges. The bearing surfaces preferably have notches extending in the direction of the central axis. The notches are arranged such that a pipe connection piece with a bearing section designed as an external polygon with the same number of edges can be inserted into the internal polygon, and that another pipe connection piece with a bearing section designed as an external polygon with a different number of edges than the internal polygon can be inserted into the notches.

[0033] This allows, for example, a pipe connection piece with a bearing section designed as a hexagon or a pipe connection piece with a bearing section designed as an octagon to be inserted into the same bearing opening.

[0034] Preferably, the pipe connection assembly further comprises a closure plug, wherein the closure plug has a threaded structure on the closure plug side that can be connected to the threaded structure of the pipe connection piece. When inserted, the closure plug blocks access to the pipe channel.

[0035] The sealing plug thus acts as a construction protection element, so that no concrete can penetrate into the pipe channel during production.

[0036] The sealing plug is preferably screwed in from the side opposite the pressing contour. The sealing plug rests with a flange sealingly against a mating surface on the bearing element.

[0037] Preferably, the bearing opening has a retaining flange with a first surface and a second surface. The pipe connector rests against the first surface, and the sealing plug rests against the second surface. This secures the pipe connector in the bearing opening against axial displacement.

[0038] Preferably, the pressing contour is located outside the bearing opening when the pipe connection piece is inserted into the bearing opening.

[0039] The press contour preferably has raised portions and / or grooves on the outside, which are designed to provide a watertight press connection with the first pipe. Preferably, the first pipe is pressed against the press contour using a press fitting. The press fitting is preferably also located in the wall structure.

[0040] Preferably, the pipe connection arrangement further comprises the first pipe, wherein the first pipe is connected to the press contour via a press connection, in particular to a press fitting. Preferably, the pipe connection arrangement further comprises the second pipe, wherein the second pipe is connected to the threaded structure of the pipe connection piece.

[0041] A wall arrangement comprises a pipe connection arrangement as described above and a wall structure, wherein the bearing element is at least partially, preferably completely, embedded in the wall structure.

[0042] A procedure for assembling the wall structure is characterized by the following steps: In a first step, the pipe connector is connected to a first pipe via the press contour, in a second step the pipe connector is placed with the first pipe, and in a third step the wall structure is provided.

[0043] In a fourth step, the second pipe is connected to the threaded structure of the pipe connector.

[0044] The steps are performed in the appropriate order. Preferably, the above-mentioned sealing plug is screwed in before the second or third step.

[0045] Further embodiments are specified in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Preferred embodiments of the invention are described below with reference to the drawings, which are for illustrative purposes only and are not to be construed as limiting. In the drawings: Fig. 1 is a perspective exploded view of a pipe connection arrangement according to an embodiment of the present invention from the front; Fig. 2 is a perspective exploded view of the pipe connection arrangement according to Figure 1from the rear; Fig. 3 a perspective view of the pipe connection arrangement according to the previous figures from the front; Fig. 4 a perspective view of the pipe connection arrangement according to the previous figures from the rear; Fig. 5 a sectional view of the pipe connection arrangement according to the previous figures; Fig. 6 a perspective view of a wall arrangement with a pipe connection arrangement according to the previous figures; Fig. 7 a front view of the wall arrangement according to Figure 6 ; Fig. 8 a sectional view of the wall arrangement according to the Figures 6 and 7 ; Fig. 9 is an exploded perspective view of another embodiment; Fig. 10 is a perspective view of Fig. 9 with inserted pipe connection piece of a first type; and Fig. 11 a perspective view of Fig. 9 with inserted pipe connector of a second type. DESCRIPTION OF PREFERRED EMBODIMENTS

[0047] Based on the Figures 1 to 5An embodiment of a pipe connection arrangement 1 according to the invention is explained. The pipe connection arrangement 1 is used for installation in a wall structure W, which is Figures 6 to 8 is shown in more detail.

[0048] The pipe connection arrangement 1 comprises a pipe connection piece 2 and a bearing element 8. In the installed state, the pipe connection arrangement 1 lies essentially completely in the wall structure W. The pipe connection piece 2 is mounted in the bearing element 8. The bearing element 8 has the advantage that, due to its design, the installation situation with regard to forces or torques that are introduced onto the pipe connection piece 2 into the wall structure W is better and that twisting of the pipe connection piece 2 in the wall structure W can be prevented.

[0049] In the embodiment shown, the pipe connection piece 2 has a side wall 3 which delimits a pipe channel 4, a press contour 5 arranged on the side wall 3, via which the pipe connection piece 2 can be connected to a first pipe, a threaded structure 6 arranged on the side wall for connecting the pipe connection piece to a second pipe, and a bearing section arranged on the outside of the side wall. The two pipes can be connected to one another using the pipe connection piece 2. The first pipe, which is connected to the pipe connection piece 2 via the press contour 5, is connected to the pipe connection piece 2 before installation in the wall structure W. The second pipe, which is connected to the pipe connection piece 2 via the threaded structure 6, is connected to the pipe connection piece 2 after installation of the pipe connection piece 2 in the wall structure W.

[0050] A central axis M' extends through the pipe channel 4, around which the side wall 3 extends. In the embodiment shown, the thread structure 6 is an internal thread. The diameter of the internal thread is larger than the diameter of the pipe channel 4 in the region of the pressing contour 5. In other embodiments, it is also conceivable for the diameter of the internal thread to be smaller than the diameter of the pipe channel 4 in the region of the pressing contour. The pressing contour 5 is arranged axially offset in the direction of the central axis M' relative to the thread structure 6. In the embodiment shown, the pressing contour 5 has a plurality of elevations 26 and grooves 27. The first pipe is pressed against these elevations 26 and grooves 27.

[0051] The said bearing section 7 is arranged on the outside of the threaded structure 6 and preferably extends substantially over the same axial length as the threaded structure 6.

[0052] The bearing element 8 is formed with a bearing opening 9 extending along a central axis M, which is delimited on the outside by a wall 10. Furthermore, the bearing element 8 comprises at least one anti-rotation element 11, which extends radially away from the wall 10 toward the central axis M.

[0053] The bearing opening 9 is in the embodiment shown according to the Figures 1 to 8as an internal polygon, here as an internal octagon. The bearing opening therefore comprises eight bearing surfaces 18 arranged evenly distributed around the circumference. The surface normals of the bearing surfaces 18 are each at right angles to the central axis M. The bearing section 7 is designed here as an external polygon, here as an external octagon. The bearing section 7 therefore comprises eight bearing surfaces 17 arranged evenly distributed around the circumference. The surface normals of the bearing surfaces 17 are each at right angles to the central axis M. When the bearing section 7 is inserted into the bearing opening 8, the bearing surfaces 17 of the bearing section 7 come into contact with the bearing surfaces 18 of the bearing opening 9, thereby providing the rotationally fixed bearing between the pipe connection piece 2 and the bearing element 8.

[0054] In other embodiments, it is also conceivable that fewer than eight, in particular only one, two, four, or six, bearing surfaces are arranged. It is also conceivable that other structures, such as a polygonal shape, are used.

[0055] In the embodiment shown, four anti-rotation elements 11 are arranged. The four anti-rotation elements 11 are arranged at regular intervals around the central axis.

[0056] The anti-rotation element 11 is preferably designed as a flat wall section. The flat wall section protrudes from the outer side 12 of the wall 10 and is integrally formed with the wall 10. Opposite the forming point 13 on the outer side 12, the anti-rotation element 11 has a free end.

[0057] The anti-rotation element 11 has at least one main surface 14, which lies in a plane that runs at an angle to the central axis M. In the embodiment shown, two main surfaces 14 are arranged parallel to one another. The two main surfaces 14 are connected to one another via side surfaces 15. At the front side, i.e. at the free end, the anti-rotation element 11 terminates in an end surface 28. The angular inclination of the main surface 14 is oriented to the central axis M with respect to the threaded structure 6 of the pipe connection piece 2 in such a way that the torque generated during a connection process of the second pipe exerts a force on the anti-rotation element 11 into the wall structure W, in which the bearing element 8 can be installed.

[0058] In the embodiment shown, the wall 10 of the bearing element 8 has a plurality of flat surfaces 16 distributed around the circumference. The surface normals of the flat surfaces are each oriented perpendicular to the central axis M. In the embodiment shown, one of the aforementioned anti-rotation elements 11 is arranged on every other surface 16. The anti-rotation element 11 extends from one corner point of the surface 16 to a diametrically opposite corner point of the surface 16.

[0059] The anti-rotation element 11 extends away from the surface 16 with a length L. The length L of the anti-rotation element 11 corresponds to 75% to 100% of the distance D between two surfaces 16 arranged opposite one another with respect to the central axis M. However, the length L can also be greater than the distance D.

[0060] In the embodiment shown, the pipe connection assembly 1 further comprises a sealing plug 19. The sealing plug 19 comprises a threaded structure 20 on the sealing plug side, which can be connected to the threaded structure 6 of the pipe connection piece 2. When inserted, the sealing plug 19 blocks access to the pipe channel 4 from the side of the threaded structure. On the outside, the sealing plug 19 has a drive structure 29, here a hexagon socket, with which the sealing plug 19 can be driven.

[0061] The sealing plug 19 rests with a flange 21 sealingly against a counter surface 22 on the bearing element 8. This prevents foreign matter from entering the pipe channel 4 during assembly.

[0062] The bearing opening 9 has a retaining flange 23 with a first surface 24 and a second surface 25. The pipe connection piece 2 rests against the first surface 24, and the closure plug 19 rests against the second surface 25. The closure plug 19 and the pipe connection piece 2 are clamped to the retaining flange 23, thereby securing the pipe connection piece 2 in the bearing opening 9 with respect to axial displacement.

[0063] After assembly of the pipe connection assembly 1, the sealing plug 19 is removed so that the second pipe can be connected to the threaded structure 20. After removal of the sealing plug 19, the pipe connection piece 2 is held by the wall structure W surrounding the pipe connection assembly 1.

[0064] In the connected state, i.e. when the pipe connection piece 2 is inserted into the bearing opening 9, the pressing contour 5 lies outside the bearing opening 9 and is thus easily accessible for pressing the first pipe.

[0065] The Figures 6 to 8 show a wall arrangement comprising a pipe connection arrangement 1 and a wall structure W. The bearing element 8 and the pipe connection piece 2 are embedded in the wall structure W. The wall structure W is, for example, a cast concrete wall. The pipes are not shown in the figures. Preferably, the bearing element 8 is located in the wall structure in such a way that the sealing plug can be removed after the wall structure has been manufactured.

[0066] A method for assembling the wall arrangement is characterized in that, in a first step, the pipe connection piece 2 is connected to a first pipe via the press contour 5, in a second step, the pipe connection piece 2 is positioned, and in a third step, the wall structure W is provided. Preferably, the said closure plug 19 is mounted before the third step and removed again after the third step. After the third step, the second pipe is screwed into the threaded structure 6.

[0067] In the Figures 9 to 11 A further embodiment of the pipe connection arrangement is shown. This further embodiment differs from the one shown in the Figures 1 to 8shown embodiment by the shape of the bearing opening 9. The bearing opening 9 is designed here as an internal polygon with a number of bearing surfaces 18 corresponding to the number of edges and some of the bearing surfaces 18 of the internal polygon have notches 30. The notches are designed such that a pipe connection piece with a bearing section 7 designed as an external polygon with the same number of edges can be inserted into the internal polygon, and that a pipe connection piece with a bearing section 7 designed as an external polygon with a different number of edges than the internal polygon can be inserted into the notches. Figure 9 it is shown that a pipe connection piece 2 with an external hexagon or a pipe connection piece 2 with an external octagon can be inserted into the bearing opening 9. LIST OF REFERENCE SYMBOLS 1 Pipe connection arrangement 22 Counter surface 2 Pipe connector 23 retaining flange 3 side wall 24 first area 4 Pipe channel 25 second area 5 Press contour 26 Surveys 6 Thread structure 27 grooves 7 Storage section 28 frontal surface 8 Bearing element 29 Drive structure 9 Warehouse opening 30 incisions 10 wall M central axis 11 Anti-rotation element M' central axis 12 outside D distance 13 Forming point L length 14 Main areas W Wall structure 15 side surface 16 Area 17 Storage space 18 Storage space 19 sealing plug 20 plug side Thread structure 21 flange

Claims

1. Pipe connection arrangement (1) for a wall structure (W), comprising a pipe connection part (2) with a side wall (3) which delimits a pipe channel (4), with a pressing contour (5) arranged on the side wall (3) and via which the pipe connection part (2) is connectable to a first pipe, with a threaded structure (6) arranged on the side wall (3) for connecting the pipe connection part (2) to a second pipe, and with a mounting section (7) arranged on the exterior on the side wall (3), and comprising a mounting element (8) with a mounting opening (9) extending along a center axis (M), and being delimited on the exterior by a wall (10), and with at least one anti-rotation element (11) which on the exterior of the wall (10) extends away radially towards the center axis (M), wherein the pipe connection part (2) is insertable with its mounting section (7) into the mounting opening (9) and in an inserted state is mounted in a rotationally fixed manner in the mounting opening (9) of the mounting element (8), and wherein in an installed state, the at least one anti-rotation element (11) can be extended into the wall structure (W) such that a force acting on the threaded structure (6) can be transmitted into the wall structure (W) via the anti-rotation element (11), characterized in that the anti-rotation element (11) comprises at least one main surface (14), which lies in a plane which runs at an angularly inclined manner with respect to the center axis (M).

2. Pipe connection arrangement (1) according to claim 1, characterized in that a plurality of anti-rotation elements (11) are arranged, wherein the anti-rotation elements (11) preferably are arranged in a regularly spaced distribution about the center axis (M).

3. Pipe connection arrangement (1) according to claim 1 or 2, characterized in that the anti-rotation element (11) is formed as a flat wall section, which is integrally formed on an exterior side (12) of the wall (10).

4. Pipe connection arrangement (1) according to any one of the preceding claims, characterized in that the anti-rotation element (11) comprises a free end opposite an adjoining point (13) on an exterior side (12) of the wall (10).

5. Pipe connection arrangement (1) according to any one of the preceding claims, characterized in that the angled inclination of the main surface (14) with respect to the center axis (M) is oriented with respect to the threaded structure (6) of the pipe connection part (2) in such a manner that a torque resulting from a connection process of the second pipe causes a force to be effected on the anti-rotation element (11) into the wall structure (W) in which the mounting element (8) can be fitted.

6. Pipe connection arrangement (1) according to any one of the preceding claims, characterized in that the wall (10) of the mounting element (8) comprises a plurality of flat surfaces (16) which are distributed around the circumference, wherein their surface normals preferably are in each case oriented perpendicular to the center axis (M), and wherein on each of the surfaces (16) or on every second surface (16) in each case one of said anti-rotation elements (11) is provided.

7. Pipe connection arrangement (1) according to any one of the preceding claims, characterized in that the mounting section (7) comprises at least one flat mounting surface (17), the surface normal of which lies perpendicular to the center axis of the pipe channel (4), and that the mounting opening (9) comprises at least one flat mounting surface (18), the surface normal of which lies perpendicular to the center axis (M), and wherein the two mounting surfaces (17, 18) abut on each other, when the pipe connection part (2) lies in the mounting opening (9).

8. Pipe connection arrangement (1) according to any one of the preceding claims, characterized in that the mounting opening (9) is formed as an interior multi-edged element with a number of mounting surfaces (18) corresponding to the number of edges.

9. Pipe connection arrangement (1) according to claim 8, characterized in that the mounting surfaces (18) of the interior multi-edged element comprise incisions (30) which are formed such - that a pipe connection part with a mounting section (7) formed as an exterior multi-edged element with the same number of edges can be inserted into the interior multi-edged element, and - that a pipe connection part with a mounting section (7) formed as an exterior multi-edged element with a different number of edges can be inserted into the incisions.

10. Pipe connection arrangement (1) according to any one of the preceding claims, characterized in that the pipe connection arrangement furthermore comprises a closing plug (19), wherein the closing plug (19) comprises a closing-plug-sided threaded structure (20), which can be connected to the threaded structure (6) of the pipe connection part (2), wherein the closing plug (19) in a plugged-in state blocks the entrance to the pipe channel (4).

11. Pipe connection arrangement (1) according to claim 10, characterized in that the closing plug (19) can be screwed in from the side opposite of the pressing contour (5) and that the closing plug (19) abuts with a flange (21) in a sealing manner on a counter surface (22) on the mounting element (8).

12. Pipe connection arrangement (1) according to claim 10 or 11, characterized in that the mounting opening (9) comprises a holding flange (23) with a first surface (24) and a second surface (25), wherein the pipe connection part (2) abuts on the first surface (24) and the closing plug (19) abuts on the second surface (25), and wherein thereby the pipe connection part (2) is secured in the mounting opening (9) with respect to an axial displacement.

13. Pipe connection arrangement (1) according to any one of the preceding claims, characterized in that, when the pipe connection part (2) is inserted in the mounting opening (9), the pressing contour (5) lies outside of the mounting opening (9); and / or that the pressing contour (5) comprises on the exterior elevations (26) and / or grooves (27), which are formed such that a water-tight pressing connection can be provided with the first pipe.

14. Wall arrangement comprising a pipe connection arrangement (1) according to any one of the preceding claims and a wall structure (W), wherein the mounting element (8) is inserted in the wall structure (W).

15. Method of mounting a wall arrangement according to claim 14, characterized in that in a first step the pipe connection part (2) is connected to a first pipe via the pressing contour (5), that in a second step the pipe connection part (2) is positioned, and that in a third step, the wall structure (W) is provided.