ADAPTER FOR A DRAINAGE DEVICE

Description

[0001] The invention relates to an adapter for a drainage device according to the preamble of claim 13, as well as a floor drain with such an adapter. Such adapters serve to connect a drain body installed in a floor surface to a connected piping system.

[0002] DE 10 2019 110 322 A1 discloses an adapter that can be mounted on a drain body and establishes a connection between said drain body and a piping system. Wastewater, which is initially collected in the drain body, is thus channeled through the adapter into the piping system. The adapter is sealed against the pipeline by means of a special seal with an annular outer contour that can be inserted into a contour provided on the adapter. To couple the adapter to the pipeline, the seal can first be placed on the drain pipe. The adapter is then plugged in.

[0003] The seal has an upper, inward-facing collar that projects from the outside to the inside of the drainpipe when installed. There is also a collar on the underside of the seal into which a pipe socket protruding from the drain body can be inserted. The seal also has flexible sealing lips that conform to the outer wall of the drainpipe when the adapter is plugged onto the drainpipe. The sealing lips exert a relatively low contact force on the drainpipe and also seal it. The pressure exerted by the seal on the drainpipe depends on the sealing material and the tightness of the fit: the tighter the fit and the harder the sealing material, the greater the pressure exerted by the sealing lips on the drainpipe, but at the same time the more difficult it is to install the adapter on the drainpipe.

[0004] The object of the invention is to eliminate the disadvantages described and to propose an adapter which is easy to assemble and which realizes a fixed, but nevertheless easily detachable connection between the drain pipe and the drain body if necessary.

[0005] This object is achieved by an adapter having the features of claim 1.

[0006] The adapter according to the invention is intended for a drainage device, which can preferably be a shower floor drainage device. The drainage device comprises a receptacle that can be installed in a floor plate and a drain pipe that can be fluidly connected to the receptacle. The receptacle is thus understood to be a component that can be installed in the floor plate and forms a type of water inlet housing there.

[0007] The adapter itself includes the following components: a base part which has a first coupling point to the drain pipe and a second coupling point to the receptacle and, in the assembled state, couples the receptacle to the drain pipe, a sealing ring which can be installed in the base part for sealing the adapter against the drain pipe, a press ring for exerting a compressive force on the sealing ring.

[0008] The sealing ring is made of a deformable, flexible material, such as plastic or rubber. Preferably, the base part has a receptacle compatible with the sealing ring, such as a groove. The sealing ring can be easily inserted into such a groove and securely fixed in place. Alternatively, or in addition to a groove, the base part can also have a lower collar, on whose contour the sealing ring inserted into the base part can rest.

[0009] When the sealing ring is unloaded, a clearance fit is provided between the sealing ring and the drainpipe. This clearance fit is dimensioned such that the adapter with the sealing ring installed can be easily pushed onto the drainpipe. In this state, the sealing ring does not yet perform a sealing function. Sealing is only achieved when the sealing ring in the adapter is deformed by a force exerted on the sealing ring in such a way that it not only closes a gap formed between the drainpipe and the adapter, but is deformed or squeezed into this gap under high compressive force.

[0010] The force exerted on the sealing ring is applied by screwing the press ring into the base part. Screwing the press ring into the base part is preferably not done manually, but with a suitable tool, as a tool can exert a higher torque on the press ring and thus also a higher compressive force on the sealing ring. As the press ring is screwed in, its underside moves ever closer to the sealing ring until the press ring and sealing ring finally make contact. If the screwing in process is continued, the press ring presses on the sealing ring, deforms it and creates the desired press connection between the drain pipe and adapter. Since the gap between the drain pipe and adapter is completely filled by the deformed sealing ring during this pressing process, the drain pipe and adapter are also securely sealed.

[0011] Preferably, the press ring is not screwed into the base part using an external tool, but rather using an insert part integrated into the adapter. This insert part can be a part that can be installed above the press ring in the base part and is intended to tension the sealing ring installed in the base part. The press ring and the insert part preferably have compatible connecting elements to create a positive connection. This makes it very easy to first exert the torque required to screw in the press ring on the insert part and then transfer it from there to the press ring. The sealing ring can therefore be pressed against the drainpipe with particular ease and with high compressive force using the combination of press ring and insert part. The compatible connecting elements can, for example, be a type of toothing.

[0012] A tight clearance fit is preferably provided between the press ring and the insert part so that, on the one hand, the insert part can be easily separated from the press ring, but on the other hand, a torque acting on the insert part can be safely transferred to the press ring.

[0013] In a preferred embodiment, a spacer is provided between the sealing ring and the press ring. A spacer is a tube-like part that can be inserted into the base part of the adapter and forms a type of spacer between the press ring and the sealing ring. When installed in the adapter, the spacer is located between the sealing ring and the press ring. The screwing-in movement of the press ring presses the spacer onto the sealing ring. The press ring, which rotates during screwing in, therefore rubs with its underside not directly against the flexible sealing ring, but rather against the top side of the spacer. Preferably, the spacer itself does not rotate or only rotates insignificantly despite the rotating movement of the press ring. The spacer is thus displaced linearly towards the press ring.

[0014] The top surface of the spacer is designed to resist damage from the aforementioned rotational friction of the compression ring. Simply put, the linearly moving spacer merely compresses the sealing ring, but does not rub against it.

[0015] In a preferred embodiment, the spacer comprises a seal for additional sealing of the adapter against the drainpipe. The seal is thus achieved on the one hand by the compressible sealing ring and on the other hand by the seal provided on the spacer. This seal provided on the spacer has an inner diameter that is slightly smaller than the outer diameter of the drainpipe. The seal therefore forms a guide when the adapter is plugged onto the drainpipe. In addition, the seal closes any gap remaining between the drainpipe and the housing when the drainpipe is inserted flush. In addition to the improved appearance, this also prevents wastewater from penetrating and accumulating there, thus preventing unpleasant odors.

[0016] Preferably, the seal mounted in the spacer is glued in place. This means it can neither be forgotten nor installed incorrectly during installation.

[0017] The spacer can have at least one predetermined separation point at which it can be divided. Preferably, the tube-shaped spacer can comprise two predetermined separation points, by means of which it can be divided into two shell-like halves. Such a division enables the subsequent installation of a spacer into an adapter, even if a receptacle arranged above the adapter in the base plate or a component of the drainage device located on the receptacle, for example, a narrow channel drain, only has an opening to the drain pipe that is smaller than the diameter of the spacer.

[0018] Although the spacer is usually inserted into the adapter before assembly, it can sometimes be forgotten during installation. To allow the spacer to be pushed through an opening in the mount that is smaller than the diameter of the spacer, the spacer is split into two parts at the designated separation points. The two resulting half-shells can be inserted one after the other through the opening in the inlet housing and then positioned in the adapter above the sealing ring at the designated location.

[0019] In cases where the opening of the inlet housing is only slightly smaller than the spacer, it may be sufficient to simply split the spacer at a predetermined separation point. A spacer split in this way can be twisted into a spiral and pushed in one piece from above through the opening of the inlet housing into the adapter.

[0020] The first coupling point, which connects the adapter to the drainpipe, is formed, as already explained, by the compression ring being screwed into the receptacle, which consequently compresses the sealing ring and presses it between the receptacle and the drainpipe. The compression ring and receptacle thus each comprise a thread. To position these two threads correctly relative to each other during screwing in and to prevent the part with the external thread from being placed at an angle relative to the part with the internal thread, a bayonet lock can be integrated into the threaded connection—and thus also into the coupling point.

[0021] A bayonet lock is a mechanical connection between two cylindrical parts that can be quickly made and released along their longitudinal axis. The parts are connected and separated again by inserting them into one another and turning them in opposite directions. With a bayonet lock integrated into a thread, the two components are first turned against the direction of thread rotation with little pressure to ensure correct positioning. When the two parts are in a predefined position relative to one another, the thread is interrupted and the part with the external thread slides over the part with the internal thread in the direction of the thread's longitudinal axis. In simple terms, the two threads engage with one another and are thus positioned correctly relative to one another. The direction of rotation can then be reversed and the internal thread can be screwed into the external thread.

[0022] In a preferred embodiment, the insert can include openings to collect impurities present in the wastewater, such as hair, thus acting as a sieve. The insert thus has a dual function: Firstly, it transmits torque to the press ring and creates a press connection between the adapter and the drainpipe. Secondly, it prevents foreign matter from entering the drainpipe, thus reducing the risk of pipe blockages.

[0023] The insert preferably comprises a receptacle for a tool, in particular a screwdriver, so that the insert can be screwed into or out of the adapter using a tool. This receptacle can be, for example, a slotted, Phillips, or Torx socket. The receptacle is preferably mounted in the center axis of the insert so that a torque introduced into the insert with the tool via the receptacle can be evenly transmitted to the press ring coupled to the insert. It is therefore particularly advantageous that no special tools are required to screw in the insert.

[0024] The second coupling point, which connects the adapter to the receptacle and thus to the water inlet housing, is preferably formed by a threaded connection. For this purpose, the adapter may be provided with a thread that is compatible with a thread on the receptacle. This screw connection preferably includes a seal that is compressed when the adapter is screwed into the receptacle and seals the transition area from the adapter to the receptacle.

[0025] Similar to the first coupling point, the second coupling point can also include a bayonet lock. For this purpose, the thread of the adapter can be designed as a first part of a bayonet lock, which is compatible with a second part of the bayonet lock attached to the receptacle. This results in the advantages of simple and coaxial positioning of the components relative to one another, as already described in connection with the bayonet lock of the first coupling point.

[0026] The second coupling point can also comprise a detent on one of the two components, namely the adapter or the receptacle, which can be snapped into a compatible recess in the other component. When a predefined screw-in depth of the threaded connection is reached, the detent and recess reach a mutually compatible position. The detent, which is preferably elastic and is in a pre-tensioned position when the thread is screwed in, relaxes in this position and snaps into the recess. This fixes the adapter, which can be screwed into the receptacle, and can only be unscrewed from the receptacle when the detent is deliberately pushed out of the recess, usually with the aid of a lever-like tool. Only then can the adapter be removed from the receptacle.

[0027] The catch thus provides security against accidental unscrewing. Such accidental unscrewing can occur if other parts of the drain device, which also include a threaded connection, are to be loosened and the applied torque is transferred, in whole or in part, not to the thread to be loosened, but to the threaded connection of the holder and adapter.

[0028] According to the invention, the first coupling point for connecting the adapter to the drain pipe and the second coupling point for connecting the adapter to the receptacle each comprise an oppositely oriented thread.

[0029] This not only prevents the other coupling point from being loosened when one coupling point is tightened, but on the contrary, one coupling point is additionally tightened when a torque is applied to the other coupling point.

[0030] Further measures improving the invention are presented in more detail below with the description of preferred embodiments of the invention with reference to the figures.

[0031] The figures show: Fig. 1 shows a drainage device installed in a floor slab in a perspective sectional view; Fig. 2 shows the floor slab with drainage device according to Fig. 1 in a side view in section; Fig. 3 shows a base plate and a drainage device that can be installed in the base plate in an exploded view; Fig. 4 shows some components of the drainage device that together form an adjustment device in a sectional side view; Fig. 5 shows an enlarged detail from Fig. 4 ; Fig. 6 shows the components according to Fig. 4 in a sectioned perspective view; Fig. 7 shows an enlarged detail from Fig. 6; Fig. 8 shows a fixing element in the form of a locking ring in a view from above; Fig. 9 shows the fixing element according to Fig. 8 in a view from below; Fig. 10 shows a top-up element for a cover in a perspective view; Fig. 11 shows a holder for the Fig. 10 shown extension element in a perspective view; Fig. 12 shows a receptacle installed in a floor plate in a perspective view; Fig. 13 shows the receptacle according to Fig. 12 with built-in holder according to Fig. 11 in a perspective view; Fig. 14 shows the receptacle with holder and locking ring in the pre-assembled state in a perspective view; Fig. 15 shows an adapter coupled to a receptacle in a perspective view; Fig. 16 shows the adapter coupled to the receptacle according to Fig. 15in a perspective sectional view; Fig. 17 shows the base part of the adapter in a perspective view; Fig. 18 shows the base part of the adapter according to Fig. 17 in a perspective sectional view; Fig. 19 shows the spacer of the adapter in a perspective view; Fig. 20 shows the spacer of the adapter according to Fig. 19 in a perspective sectional view; Fig. 21 shows the sealing ring of the adapter in a perspective view; Fig. 22 shows the press ring of the adapter in a perspective view; Fig. 23 shows an insert part that can be inserted into an adapter. Identical or similar elements may be provided with identical or similar reference numerals in the following figures.

[0032] The embodiments shown in the figures are for descriptive purposes only and are not intended to limit the invention in any way.

[0033] The terms "upper", "top", "lower", "left" or "right" used below refer to the arrangement of the components shown in the drawing, which corresponds to the arrangement in the operating mode of the drain device.

[0034] Figure 1 shows a sectional view of a drainage device 100 installed in a floor slab 10. In the illustrated embodiment, the floor slab 10 is a shower floor slab 11, which has a gradient pointing toward an inlet opening 13. Wastewater entering through the inlet opening 13 is fed to a pipe system 16 connected to the drainage device 100.

[0035] The illustrated embodiment is a drain device 100 installed in a sanitary room, which is installed in an opening 12 of the shower base plate 11. The drain device 100 shown does not include an odor trap integrated into the drain pot. In other embodiments, the drain device itself may also include an odor trap.

[0036] Figure 2 shows the shower base plate 11 with the drain device 100 in a sectional view. An adapter 200 is attached to the drain pipe 16 and secured at a first coupling point 41 by means of a press connection 56. At a second coupling point 42, the adapter 200 is screwed to a receptacle 40 by means of a screw connection 62. A bayonet lock 63 is integrated into the screw connection 62. The bayonet lock 63 facilitates the alignment of the components to be screwed together.

[0037] Further details of the adapter 200 are given below in connection with the Figures 15 to 23 explained in more detail.

[0038] The receptacle 40, together with a holder 25 and a fixing element 30, which in this case is a locking ring 33, forms an adjusting device 150. The holder 25 of the adjusting device 150 is connected to an extension element 15 via a thread. An intermediate support 66 can be arranged on the extension element 15, on which a cover 14 is provided for closing the inlet opening 13. The cover 14 is removable for cleaning and maintenance work. In the fully assembled state, the surface of the cover 14 is preferably aligned flush with the surface of a covering applied to the shower floor 11, which can be, for example, floor tiles.

[0039] The flushness of cover 14 to the surface of the shower floor covering is adjusted during installation of the shower floor 11. In Figure 2 It can be seen that the extension element 15 significantly protrudes above the surface of the shower floor 11. This is because the height of the extension element 15 is initially very generously dimensioned to allow for the use of thick floor coverings. In order to roughly adjust the height of the extension element 15 to the height of a selected floor covering, the extension element 15 is therefore first shortened on its underside so that it is approximately adjusted to the height of the selected floor covering. The fine height adjustment, accurate to the millimeter or even tenth of a millimeter, is carried out after the floor covering has been applied using the threaded connection between the extension element 15 and the holder 25.

[0040] The adjustment device 150 enables, on the one hand, the described height alignment and, on the other hand, a horizontal adjustment of the cover 14 for uniform alignment with the joints surrounding the cover 14.

[0041] Figure 3 shows the components of the drainage device 100 in an exploded view. The cover 14 can preferably be placed in a form-fitting manner on an intermediate support 66 provided in the illustrated embodiment. The intermediate support 66 can also have form-fitting contours and thus be placed in a form-fitting manner on the extension element 15.

[0042] The extension element 15 has an external thread 17 that can be screwed into an internal thread 29 of the holder 25.

[0043] The holder 25 is held in a preassembled state Z1 in a housing-like structure and is movable within this housing-like structure. The housing-like structure is located in an area between the fixing element 30—in this case, the locking ring 33—and the receptacle 40.

[0044] In the illustrated embodiment, the receptacle 40 can be inserted from above into the opening 12 of the base plate 10. To assemble the drain device 100, the holder 25, the locking ring 33, the extension element 15, the intermediate support 66, and the cover 14 are also inserted from above into the drain device 100 and can be easily removed if necessary, for example, for cleaning work.

[0045] In contrast, a base part 20 provided on the adapter 200 is first attached from below to the receptacle 40 already inserted into the base plate 10. The base plate 10, with the inserted receptacle 40 and the base part 20 of the adapter 200 attached to the underside of the receptacle 40, can then be plugged onto the drain pipe 16. The base part 20 is fixed to the drain pipe 16 by means of the press connection 56, which is formed by the sealing ring 43, the spacer 49, the press ring 44, and the insert part 45. The exact functionality is explained in more detail below.

[0046] The Figures 5 to 8 explain the structure and function of the adjustment device 150. Fig. 5 an enlarged section A1 from Fig. 4 and Fig. 7 an enlarged section A2 from Fig. 6 .

[0047] The adjustment device 150 is shown in the preassembled state Z1. In this preassembled state Z1, the extension element 15 is screwed with its external thread 17 into the internal thread 29 of the holder 25.

[0048] The holder 25 has a circumferential flange 67 with an outer contour 26. In the pre-assembled state Z1, the flange 67 rests on a support surface 21 present in the receptacle 40 (cf. Fig. 12 ). Above the flange 26, a locking ring 33 provided with projections 34 is engaged in recesses 23 of the receptacle 40 that are compatible with the projections 34. The projections 34 and the recesses 23 form a locking connection 18 between the locking ring 33 and the receptacle 40.

[0049] Locking ring 33 and receptacle 40 thus form a housing-like structure that has approximately the shape of a horizontal U or a circumferential groove open towards the central axis. In the preassembled state Z1, this groove encloses the flange of the holder 25. The holder 25 - and thus also the extension element 15 - are movable in the horizontal direction RH and vertical direction RV within the groove. This mobility is expressed by a horizontal play SH, which in the illustrated embodiment is 5 mm, and a vertical play SV, which is less than 1 mm and serves to prevent the flange 67 from becoming trapped between the locking ring 33 and the receptacle 40.

[0050] The horizontal and vertical play are maintained until a floor covering is applied to the shower floor panel 11. This means: During construction, the floor panel 10 and the drainage device 100 are first installed. Once the floor panel is in place and connected to the pipe 16, a floor covering (not shown in the drawings) is applied to the floor panel. After the floor covering has been applied, the height of the cover 14 placed on the extension element 15 can be precisely adjusted to the height of the floor covering by screwing the extension element 15 into the holder 25. Furthermore, the horizontal positioning of the cover 14 is also finely adjustable, since the adjusting device 150 is still in the pre-assembled state Z1 at this time.

[0051] After the position of the cover 14 has been finely adjusted in the vertical and horizontal directions RV, RH, the remaining open joints around the cover 14 are finally sealed with a suitable mortar. This converts the adjustment device 150 from the pre-assembled state Z1 to a fully assembled state. In the fully assembled state, the adjustment device 150 is thus fixed, and only the cover 14 can still be removed from its holder.

[0052] The Figures 8 and 9 show a fixing element 30 in the form of a locking ring 33 in a perspective view obliquely from above ( Fig. 8 ) and diagonally below ( Fig. 9). In the illustrated embodiment, the locking ring 33 is made of a flexible plastic and comprises four projections 34 that can be inserted into the compatible recesses 23 of the receptacle 40 to create a locking connection 18. Furthermore, the locking ring 33 has several through-openings 19, which, when fully assembled, serve to drain any seepage water penetrating the drain.

[0053] Fig. 9 also shows a projection 36 attached to the underside 32 of the locking ring 33, which in the pre-assembled state Z1 of the adjusting device 150 is arranged in a recess 35 provided in the holder 25 and there limits the horizontal play SH of the holder 25.

[0054] Fig. 10shows the extension element 15, which has a tubular contour with an external thread 17 and a flange 69 adjoining the tubular contour. Openings 69 are provided in the tubular contour, which, analogous to the openings 19 in the locking ring 33, serve to drain seepage water. The tubular contour can be shortened by a length 70 on site, for example, using a cutter knife, to adapt to the thickness of a floor covering to be applied.

[0055] Fig. 11shows the holder 25, which also has openings 24 for draining seepage water. The holder 25 has an internal thread 29 into which the extension element 15 can be screwed. Furthermore, the holder 25 includes the aforementioned recess 35 to limit its mobility in the horizontal direction RH. The holder 25 also has a flange 67 with a circular outer contour 26. The outer contour 26 has a diameter D1 that is smaller than a diameter D2 of the receptacle 40. The holder 25 can thus be inserted into the receptacle 40.

[0056] The Figures 12 to 14 show the shower base plate 11 with inserted holder 40 in different pre-assembly stages.

[0057] In Figure 12Only the holder 40 is inserted into the opening 12 of the base plate 10. From the lower side of the base plate 10, the base part 20 of the adapter 200 is screwed to the holder 40. The holder 40 has an inner contour 22 with a support surface 21 and recesses 23.

[0058] Figure 13 shows the holder 40 with the holder 25 inserted. The holder 25 rests with its flange 67 on the support surface 21 of the holder 40 and is movable in the horizontal direction RH within the horizontal play SH.

[0059] Fig. 14 shows the holder 40 with the locking ring 33 installed. The locking ring 33 is detachably connected to the holder 40 via the locking connection 18. This installation situation represents the pre-assembled state Z1, in which the holder 25 (in Fig. 14 not shown) is movable in the housing-like structure formed by the locking ring 33 and the receptacle 40 and can thus be adjusted if necessary.

[0060] The Figures 15 to 23 show the adapter 200 and its components already mentioned above. The adapter 200 serves to watertightly couple a water inlet inserted into the base plate 10 to the drain pipe 16. The adapter 200 thus has two coupling points, namely the first coupling point 41, at which it is coupled to the drain pipe 16, and the second coupling point 42, at which it is coupled to the water inlet or to the receptacle 40 integrated into the water inlet (cf. Fig. 2 ).

[0061] In the illustrated embodiment, the drainage device 100 comprises both an adjusting device 150 and an adapter 200. The details of the receptacle 40 with special features for integrating an adjusting device 150 have already been explained above. With regard to the adjusting device 150, however, it is irrelevant whether a drainage device on which the adjusting device 150 is to be used comprises an adapter 200. Analogously, with regard to the adapter 200, it is also irrelevant whether the drainage device 100 comprises an adjusting device 150. Rather, both assemblies can be universally integrated into a drainage device, either alone or together.

[0062] The Figures 15 and 16 show the drain device 100, which on the one hand comprises the adapter 200 and on the other hand is also intended to integrate an adjusting device 150. This is evident from the fact that the Figures 15 and 16shown receptacle 40 also includes features of the adjustment device 150.

[0063] As already mentioned, the adapter 200 comprises two coupling points 41 and 42. The function of the adapter 200 in connection with the first coupling point 41 is to create a watertight connection between the base part 20 and the drain pipe 16. This fixed connection is the one already described in connection with Fig. 2 mentioned press connection 56. In a simple embodiment, it can be provided that the press connection 56 relative to the drain pipe 16 is realized solely by an adapter with the components base part 20, sealing ring 43, and press ring 44. In the illustrated embodiment, however, the adapter 200 further comprises the spacer 49 and the insert part 45.

[0064] The press connection 56 is realized by a screw connection 38. The screw connection 38 is formed by an internal thread 54 arranged on the base part 20 and an external thread 55 arranged on the press ring 44. The press ring 44 can thus be screwed into the base part 20. The base part 20 has on its underside a lower collar 48 with an internal diameter D3 that is smaller than an external diameter D4 provided on the sealing ring 43. When the base part 20 is placed on the drain pipe 16 with a sealing ring 43 arranged on the collar, the sealing ring 43 cannot thus escape downwards from the base part 20. Rather, it is squeezed in when the clamping ring 44 is screwed deep enough into the base part 20. The previously mentioned press connection 56 can be realized by squeezing the sealing ring 43.

[0065] In the Figures 15 and 16In the illustrated embodiment, the adapter 200 further comprises the spacer 49 and the insert part 45. However, these parts are not absolutely necessary for producing the press connection 56. Rather, the press connection 56 can also be produced by pressing the press ring 44 directly against the sealing ring 43 without the spacer 49 acting as a spacer. For this purpose, the press ring could, for example, have a cylindrical contour similar to the contour of the spacer, so that the press ring functions simultaneously as a spacer and as a pressing means.

[0066] The inclusion of an insert part 45 in the adapter 200 is also not mandatory. The insert part 45 is provided for screwing the press ring 44 into the base part 20. This insert part 45 comprises connecting elements 46' for establishing a positive connection 47 with compatible connecting elements 46 on the press ring 44. Furthermore, the insert part 45 comprises a receptacle 59, which in the illustrated embodiment is a slot for inserting a screwdriver. Using the screwdriver, the insert part 45 and the press ring 44 coupled to the insert part can be easily screwed into the base part 20.

[0067] The insert part 45 thus forms a screwing aid. Even without the insert part 45, the press ring 44 can be screwed into the base part 20. If an adapter 200 is to be used without the insert part 45, the press ring 44 could, for example, comprise a shoulder onto which a screwing tool can be directly placed, so that a sufficiently strong press connection can be established even without the use of the insert part 45.

[0068] The Figures 17 and 18 show the base part 20 of the adapter 200. At the lower end is the lower collar 48, which has the inner diameter D3. In the assembled state, the sealing ring 43 is arranged on the lower collar 48. It can also be seen that the base part 20 has an upper collar 50 with a U-shaped recess 65, into which a seal 39 is glued.

[0069] The base part 20 has an external thread 60 arranged on the upper collar 50, which, together with an internal thread 61 arranged on the receptacle 40, forms a screw connection 62 and thus the second coupling point 42. In order to seal this coupling point 42 watertight, the circular seal 39 glued into the base part 20 is provided in the illustrated embodiment. When the external thread 60 is screwed into the internal thread 61, i.e. when the base part 20 is screwed into the receptacle 40, the seal 39 is pressed against a circular contour provided in the receptacle 40. With increasing screwing depth, the seal 39 is compressed to such an extent that water draining through the drainage device 100 cannot escape from the drainage device 100 at the second coupling point 42, but rather the second coupling point 42 is reliably sealed.

[0070] The external thread 60 is arranged on the upper collar 50 of the base part 20 and comprises part of a bayonet lock 63. The other part of the bayonet lock 63 is integrated into the internal thread 61 of the receptacle 40 (cf. Fig. 7 ). On the upper collar 50 there is a catch 64 which, when the base part 20 is screwed sufficiently deep into the receptacle 40, engages in a recess provided on the receptacle 40. The engagement of the catch 64 can be felt during screwing in, so that the person installing the drain device 100 receives a haptic and / or acoustic signal that the predefined screwing depth has been reached. In addition, after the catch 64 has engaged, the base part 20 can only be unscrewed from the receptacle 40 if the catch 64 has previously been pushed out of the recess, for example by means of a screwdriver. The catch 64 thus secures the base part 20 against unintentional unscrewing.

[0071] The Figures 19 and 20 show the spacer 49 provided in the illustrated embodiment. The spacer 49 has a cylindrical shape and acts as a spacer between the press ring 44 and the sealing ring 43. When the press ring 44 is screwed in, the spacer 49 is pushed linearly along its central axis into the base part 20 and finally presses on the sealing ring 43. The sealing ring 43 is in turn supported on the lower collar 48 of the base part 20 and is squeezed by screwing in the press ring 44 and forms the press connection 56. In the illustrated embodiment, the spacer 49 also comprises a glued-in sealing ring 52 which is dimensioned such that it forms a low-resistance press fit with the drain pipe 16 when installed.

[0072] The spacer 49 also has two predetermined separation points 53, at which it can be easily separated into two half-shell-like individual parts, for example, using a utility knife. As already explained above, such a division of the spacer 49 is particularly helpful if, during assembly, a spacer 49 was accidentally forgotten to be inserted into the base part 20 and, moreover, the upper inlet opening of the drainage device 100 is too small to subsequently push the spacer 49 through and place it in the intended location. A spacer 49 divided into two half-shells can thus also be pushed through an inlet opening that is too small for an undivided spacer 49.

[0073] The Figure 21 shows the sealing ring 43, which is a standard sealing ring made of a flexible material with an outer diameter D4.

[0074] Figure 22shows the pressing ring 44 with the connecting elements 46 arranged on the upper side for establishing the positive connection 47 to the insert part 45. Furthermore, a flattened area can be seen on the external thread 55, which forms part of the bayonet closure 63. The internal thread 54 of the base part 20, which is compatible with this external thread 55, also has a flattened area analogously. If the base part 20 and pressing ring 44 are turned with slight pressure and reach the position in which the two flattened areas overlap, the bayonet closure 63 engages and positions the base part 20 and pressing ring 44 relative to one another in such a way that the risk of jamming - and thus the risk of thread damage - is reduced.

[0075] Figure 23shows the insert part 45 with the connecting elements 46', which in the illustrated embodiment are U-shaped recesses introduced into the outer contour. Furthermore, the insert part 45 comprises openings 58 through which the wastewater entering through the inlet opening can flow towards the drain pipe 16. The insert part 45 thus serves not only for screwing in the press ring 44, but can rather remain in the drainage device 100 after the press ring 44 has been screwed in. This ensures, on the one hand, that the insert part 45 is always there when disassembly is necessary, for example for maintenance work. On the other hand, the insert part 45 has a sieve-like effect and reduces the risk of blockages in the drainage system.

[0076] The insert part 45 also has arrows indicating the direction of rotation for screwing the press ring 44 into the base part 20. In the present case, the insert part 45 is intended to be rotated counterclockwise - viewed from above - to create the press connection 56. However, if the insert part 45 is rotated, under certain conditions, for example, if the screw connection 44 is stiff, part of the torque can be transferred to the base part 20. It is therefore not impossible for the base part 20 to rotate when the press ring 44 is screwed into the base part 20. However, the base part 20 has the additional screw connection 62, by means of which it is screwed into the receptacle 40.In order to prevent the screw connection 62 from being loosened when the pressing ring 20 is screwed in, the directions of rotation of the two screw connections 38 and 62 are designed in such a way that when the pressing ring 44 is tightened, in the event that part of the torque is transferred to the screw connection 62, i.e. to the connection point to the receptacle 40, this second screw connection 62 is not loosened but rather additionally tightened. List of reference symbols

[0077] 10Base plate 11Shower base plate 12Opening (in 10 or 11) 13Inlet opening (in 100) 14Cover (for 13) 15Extension element (for 14) 16Drain pipe 17External thread (of 15) 18Locking connection 19Opening (in 30) 20Base part (of 200) 21Support 22Inner contour (of 20) 23Recess (in 20) 24Opening (in 25) 25Holder (for 15) 26Outer contour (of 25) 27Top side (of 25) 28Bottom side (of 25) 29Internal thread (of 25) 30Fixing element 31Top side (of 30) 32Bottom side (of 30) 33Locking ring 34Protrusion (on 30) 35Recess (in 25) 36Protrusion (on 30) 37- 38Screw connection (of 44 and 20) 39Seal (in 20) 40Receptacle 41First coupling point 42Second coupling point 43Sealing ring (in 200) 44Press ring 45Insert (sieve) 46,46'Connecting element 47Connection (of 44 and 45) 48Lower collar (on 20) 49Spacer 50Upper collar (on 20) 51Pipe socket 52Seal (in 49) 53Predetermined separation point (on 49) 54Internal thread (on 20) 55External thread (on 44) 56Press connection 57Bayonet lock 58Openings 59Receptacle (in 45) 60External thread (on 20) 61Internal thread (on 40) 62Screw connection (of 20 and 40) 63Bayonet lock 64Notch 65Recess (on 20) 66Intermediate support (under 14) 67Flange (on 25) 68Openings (in 15) 69Flange (on 15) 70 length piece (on 15) , 100Drainage device 150Adjustment device 200Adapter A1 section (from Fig. 4 ) A2 section (from Fig. 5 ) D1Outer diameter (of 25) D2Inner diameter (of 40) D3Inner diameter (of 48) D4Outer diameter (of 43) RHDirection (horizontal) RVDirection (vertical) SHClearance (in horizontal direction) SVClearance (in vertical direction) Z1Pre-assembled state

Claims

1. Drain device (100), which is provided for installation in an opening (12) of a floor panel (10), preferably a shower floor panel (11), and wherein the drain device (100) comprises: - a receptacle (40) for installation in the floor panel (10) with an upper inlet opening (13), - parts pre-mounted in the floor area, which are fluidically connected to the receptacle (40) and can be further connected to a drain pipe (16), so that waste water passing through the inlet opening (13) can enter the drain pipe (16), - an adapter (200) comprising: - a base part (20) with an internal thread (54) for forming a first coupling point (41) to the drain pipe (16) and a second coupling point (42) to the receptacle (40), wherein the base part (20) couples the receptacle (40) to the drain pipe (16) in the assembled state, - a sealing ring (43) built into the base part (20) for sealing the adapter (200) with respect to the drain pipe (16), characterised in that - the adapter (200) further comprises a press ring (44) with an external thread (55) compatible with the internal thread (54) of the base part (20) for exerting a compressive force on the sealing ring (43), so that the sealing ring (43) can be pressed against the drain pipe (16) by means of the press ring (44), and the first coupling point (41) comprises a press connection (56), - the internal thread (54) of the first coupling point (41) for connecting the adapter (200) to the drain pipe (16) and the second coupling point (42) for connecting the adapter (200) to the receptacle (40) each comprise a thread orientated in opposite directions, so that when one coupling point (41, 42) is tightened, the other coupling point (41, 42) is also tightened.

2. Drain device (100) according to claim 1, characterised in that the adapter (200) further comprises an insert part (45) which can be installed in the base part (20) above the press ring (44) in the assembled state of the drain device (100) for clamping the sealing ring (43) installed in the base part (20), wherein the press ring (44) and the insert part (45) have mutually compatible connecting elements (46, 46') for producing a form-fit connection (47), so that a torque exerted on the insert part (45) can be transmitted to the press ring (44).

3. Drain device (100) according to claim 1 or 2, characterised in that a spacer (49) is provided on the adapter (200) between the sealing ring (43) and the press ring (44).

4. Drain device (100) according to claim 3, characterised in that the spacer (49) of the adapter (200) comprises a seal (52) for forming a guide relative to the drain pipe (16).

5. Drain device (100) according to claim 4, characterised in that the seal (52) is glued into the spacer (49) of the adapter (200).

6. Drain device (100) according to one of claims 3 to 5, characterised in that the spacer (49) of the adapter (200) has at least one nominal separation point (53) at which it can be divided.

7. Drain device (100) according to one of claims 1 to 6, characterised in that the first coupling point (41) of the adapter (200) comprises a bayonet coupling (57).

8. Drain device (100) according to claim 2 or according to one of claims 3 to 7, insofar as this is related back to claim 2, characterised in that the insert part (45) comprises openings (58) for collecting impurities present in the waste water, for example hair, and has a sieve-like effect.

9. Drain device (100) according to claim 2 or according to one of claims 3 to 8, insofar as this is related back to claim 2, characterised in that the insert part (45) has a receptacle (59) for a tool, in particular a screwdriver, so that the insert part (45) can be screwed into or out of the adapter (200) by means of a tool.

10. Drain device (100) according to one of claims 1 to 9, characterised in that a thread (60) is provided on the base part (20) of the adapter (200), which is compatible with a thread (61) attached to the receptacle (40), so that the second coupling point (42) is formed by a screw connection (62), which couples the base part (20) to the receptacle (40).

11. Drain device (100) according to claim 10, characterised in that the thread (60) of the base part (20) of the adapter (200) is a first part of a bayonet coupling (63) which is compatible with a second part of the bayonet coupling (63) attached to the receptacle (40).

12. Drain device (100) according to one of claims 10 or 11, characterised in that the second coupling point (42) of the adapter (200) comprises a latch (64) which can be latched into a recess in the receptacle (40) which is compatible therewith, so that the base part (20) which can be screwed into the receptacle (40) can be fixed and secured against being unscrewed.

13. Adapter (200) for a drain device (100), which is provided for installation in an opening (12) of a floor panel (10), preferably a shower floor panel (11), comprising: - a base part (20) with an internal thread (54) for forming a first coupling point (41) to a drain pipe (16) and a second coupling point (42) to the drain device (100), wherein the base part (20) couples the drain device (100) to the drain pipe (16) in the assembled state, - a sealing ring (43) built into the base part (20) for sealing the adapter (200) with respect to the drain pipe (16), characterised in that - the adapter (200) comprises a press ring (44) with an external thread (55) compatible with the internal thread (54) of the base part (20) for exerting a compressive force on the sealing ring (43), so that the sealing ring (43) can be pressed against the drain pipe (16) by means of the press ring (44), and the first coupling point (41) comprises a press connection (56), - the internal thread (54) of the first coupling point (41) for connecting the adapter (200) to the drain pipe (16) and the second coupling point (42) for connecting the adapter (200) to the drain device (100) each comprise a thread orientated in opposite directions, so that when one coupling point (41, 42) is tightened, the other coupling point (41, 42) is also tightened.