Drainage device with an adjustable support for a drain cover

Description

[0001] The invention relates to a drainage device for installation in an opening of a floor slab according to the preamble of claim 1 and to a floor slab with such a drainage device.

[0002] In this case, a floor slab is understood to be a system that can be integrated into a building structure and which collects water and feeds it to a drainage system integrated into the floor slab.

[0003] Such floor tiles can be used for a variety of applications. For example, they can be installed in sanitary areas, especially in showers. They can also be used in other types of wet rooms with floor drains, such as kitchens, public buildings such as hospitals, or food processing facilities such as commercial kitchens or slaughterhouses. They can also be used outdoors, for example, on balconies and terraces.

[0004] DE 10 2016 112 400 A1 discloses a shower floor comprising a base plate (support element 12) and a cover layer element 17. The cover layer element 17 can have a frame 20 with a shoulder 24 inserted into an opening. The opening of the cover layer element coincides with a drain opening 13 provided in the support element 12 to such an extent that the shoulder 24 of the frame 20 can be inserted into the drain opening 13. The cover layer element 17 and the support element 12 are assembled by gluing the two parts. After assembly, the drain is fixed in its position. This also predetermines the position of a cover that can be placed over the drain opening. Only if the cover and the cover layer element have the same central axis will a joint surrounding the cover be the same width on all sides.The disadvantage is that even small deviations between the two central axes are visually noticeable, as the joints surrounding the outer sides of the cover are then of different widths.

[0005] From KR10-0962021, a drainage device with the features of the preamble of claim 1 is known. However, due to the rotatability of the cover holder, an extension element screwed into the holder can be screwed out of or into the holder if handled in an incompetent manner, thus incorrectly adjusting the height of the inlet. The object of the invention is therefore to further develop the drainage device of D1 so that its assembly becomes less error-prone.

[0006] This object is achieved by a drainage device for installation in an opening of a floor plate, preferably a shower floor plate, having the features of claim 1.

[0007] The drainage device includes: an upper inlet opening through which wastewater can enter the drainage device, a cover delimiting the upper inlet opening which is carried by a height-adjusting element, parts which can be pre-assembled in the base area and which can be fluidically connected to a drain pipe so that wastewater which has passed through the inlet opening can enter the drain pipe.

[0008] The cover can be a plastic or metal part with point-shaped, linear, or other designed openings for the passage of wastewater. In this context, wastewater refers to any type of liquid that is to be drained through the drain. This wastewater can therefore be, for example, shower water (used in sanitary areas), rainwater (used outdoors), or other liquids such as cleaning agents, suspensions, etc. (used in industrial areas).

[0009] The cover can be attached directly to the extension element. However, additional components, such as intermediate supports, can also be arranged between the extension element and the cover.

[0010] The drain device further comprises an adjustment device which comprises the following components: a receptacle for installation in the base plate with a support and an inner contour which has an inner diameter; a holder which can be inserted into the receptacle for the extension element of the cover, wherein the holder has an outer contour, a top side and a bottom side, and wherein the outer contour has an outer diameter which is smaller than the said inner diameter of the receptacle, so that the holder inserted into the receptacle is movable in a horizontal direction within a horizontal play range in the pre-assembled state; a fixing element which can be attached to the receptacle and has a top side and a bottom side and which enables the holder to be movable relative to the fixing element in the pre-assembled state of the adjusting device in the vertical direction while retaining some play.

[0011] The pre-assembled state of the adjustment device refers to the state in which the holder, bracket, and fixing element are located after the bracket has been inserted into the holder and secured by the fixing element, leaving some play. The adjustment device assembled in this way is a component of the drain device. In this drain device, the bracket inserted into the holder is movable until it is finally fixed in its final position (assembled state) after the drain device has been installed in a floor slab and the floor slab has been installed in a designated location, and after fine adjustment relative to the surrounding floor covering.

[0012] In the pre-assembled state, the mount and the fixing element form a kind of housing around the holder. The holder is thus freely movable within this housing-like structure within a certain vertical and horizontal clearance.

[0013] This flexibility of the holder allows for fine adjustment of the cover relative to the surrounding floor after a floor covering has been applied. If the floor covering is made of tiles, for example, it is sufficient to initially apply the tiles with a relatively large tolerance so that the drain is positioned relatively roughly within an area left free in the floor covering. In concrete terms, a tolerance range arises when applying the floor covering because the width of the joints surrounding the drain is not determined when laying the tiles, but by fine-tuning the drain after the floor covering has been applied. This tolerance range is as large as the play of the cover plate holder relative to the mount.

[0014] Once the floor covering is glued in place, the components relevant to the holder's mobility—and thus the mobility of the cover directly or indirectly connected to the holder—remain preassembled. The holder and the cover directly or indirectly connected to the holder can be easily aligned or finely adjusted manually within the specified clearance, either by eye or with the aid of spacers, relative to the surrounding floor covering.

[0015] After this fine adjustment, the position of the cover support can be finally fixed by filling the now evenly spaced joints with a suitable adhesive or mortar. After the drain device has been finally bonded to the floor covering, the holder is secured in the mount and the previously existing play is eliminated. The drain device is then in its assembled state.

[0016] Preferably, the horizontal play of the holder relative to the receptacle in the pre-assembled state is at least 1 mm, most preferably 3 mm to 8 mm. This amount of play is sufficient to enable the desired fine adjustment and is also adapted to the joint widths specified in DIN 18 157. Regardless of whether earthenware, porcelain stoneware, or ceramic tiles are to be grouted, DIN 18 157 recommends a joint width that depends on the side length of your tile. Up to a side length of 150 mm, joints with a width of approximately 2 mm can be created. For side lengths of 150 mm and longer, a joint width of at least 2 mm and up to 8 mm should be selected.

[0017] The vertical clearance of the holder between the receptacle and the fixing element is preferably 0.1 to 2 mm. This clearance is sufficient to prevent the holder from being pinched by the fixing element, while also being small enough to keep the drain assembly flat in terms of its overall installation height. A flat installation height is particularly advantageous for shower trays designed for flush-to-floor installation.

[0018] In a preferred embodiment, the holder has an internal thread, and the extension element for the cover has an external thread that can be screwed into the internal thread. This makes it possible to adjust the installation height of the extension element relative to the floor plate. Since the extension element supports the cover, the height of the cover's upper surface can be precisely adjusted to the height of the surrounding floor covering. The drain device is therefore independent of the thickness of the floor covering used and can be adapted to different floor covering thicknesses. The position of the cover can therefore be varied vertically as well as horizontally.

[0019] Preferably, the inner contour of the receptacle and / or the outer contour of the holder are round. If both contours are round, the inner contour forms a smaller cylinder and the outer contour a larger cylinder, with the smaller cylinder being freely movable horizontally within the larger cylinder. If both contours are cylindrical, equal play in all horizontal directions is achieved within a small space.

[0020] The fixing element can preferably be a locking ring. A locking ring is easy to handle and reliably secures the position of the holder in the housing.

[0021] The fixing element and the holder can be coupled together using a locking or snap-in connection. The locking or snap-in connection, which can be detachable or non-detachable, allows the aforementioned components to be joined together in a simple, form-fitting manner.

[0022] Preferably, the locking connection is formed by at least one projection provided on the fixing element and at least one recess provided in the receptacle, into which said projection can be snapped. During assembly, the projection deforms elastically and subsequently hooks into the recess of the receptacle.

[0023] According to the invention, a recess is provided on the top side of the holder. Furthermore, it is provided that the fixing element has a projection that can be inserted into the recess and is arranged within the recess when assembled. This limits the play of the holder relative to the fixing element in the horizontal direction. The holder - and thus also a cover coupled to the holder - is therefore no longer freely movable within the initially provided horizontal play. Rather, the initially existing play is further limited by the combination of the recess on the holder and the projection on the fixing element. As a result, a holder with a projection is only as movable as the size of the recess allows.

[0024] The advantage of this limitation is that while the cover holder can still be moved in all horizontal directions to perform the desired fine adjustment, it can no longer be rotated. This prevents a cover extension element screwed into the holder from being unscrewed due to careless handling.

[0025] Furthermore, the fixing element and / or the holder can have one or more openings for the passage of seepage water. This is because, in unfavorable cases, such as with aged or otherwise damaged joints, tiny amounts of water, also known as seepage water, can seep through the joints and penetrate beneath the flooring. There, they are trapped and extremely difficult to dry out.

[0026] In the drain device described here, the extension element is screwed into the holder. The holder—and also the fixing element—thus surround the wastewater flow from the outside. This outer area borders the joints surrounding the drain device. By providing openings in the holder and / or fixing element, it is possible to channel any seepage water from outside the drain through the openings and into the wastewater flow. By diverting the seepage water, the risk of water damage in the screed and the drain area as a whole is reduced.

[0027] The object of the invention is further achieved by a base plate, preferably

[0028] A shower base plate comprising a drainage device according to one of claims 1 to 9. The drainage device can be fully or partially pre-assembled in the shower base plate. Even with such a base plate, the inventive mobility of the cover, or the mobility of the parts supporting and holding the cover, relative to the base plate is present in the pre-assembled state. This means: the base plate can be installed first, then the floor covering can be applied. After the floor covering has been applied, the cover can be finely adjusted relative to the surrounding floor covering and then finally fixed in the desired position by applying adhesive.

[0029] 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.

[0030] 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, which 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 sectional 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 an extension element for a cover in a perspective view; Fig. 11 shows a holder for the Fig. 10shown extension element in a perspective view; Fig. 12 shows a receptacle installed in a base 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 holder with holder and locking ring in the pre-assembled state in a perspective view; Fig. 15 shows an adapter coupled to a holder in a perspective view; Fig. 16 shows the adapter coupled to the holder according to Fig. 15 in 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. 19in 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.

[0031] The terms "upper", "top", "lower", "left" or "right" used below refer to the arrangement of the components of the drainage device shown in the drawing, which corresponds to the arrangement in operating mode.

[0032] Figure 1 shows a sectional view of a drainage device 100 installed in a floor plate 10. In the illustrated embodiment, the floor plate 10 is a shower floor plate 11, which has a

[0033] Inlet opening 13 has a gradient. Wastewater entering through the inlet opening 13 is fed to a pipe system 16 connected to the drainage device 100.

[0034] 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.

[0035] 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.

[0036] Further details of the adapter 200 are given below in connection with the Figures 15 to 23 explained in more detail.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The extension element 15 has an external thread 17 which can be screwed into an internal thread 29 of the holder 25.

[0042] 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.

[0043] 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.

[0044] 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 secured 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.

[0045] 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 .

[0046] The adjustment device 150 is shown in the pre-assembled state Z1. In this pre-assembled state Z1, the extension element 15 is screwed with its external thread 17 into the internal thread 29 of the holder 25.

[0047] 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.

[0048] Locking ring 33 and receptacle 40 thus form a housing-like structure roughly shaped like a horizontal U or a circumferential groove open toward 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 the 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.

[0049] The horizontal and vertical play are maintained until a floor covering is applied to the shower base plate 11. This means: During construction, the base plate 10 and the drainage device 100 are first installed. Once the base plate is in place and connected to the pipe 16, a floor covering (not shown in the drawings) is applied to the base plate. 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.

[0050] 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.

[0051] 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. 9In 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, in the fully assembled state, serve to drain any seepage water penetrating into the drain.

[0052] 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.

[0053] 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 on site by a length 70, for example, using a utility knife, to adapt to the thickness of a floor covering to be installed.

[0054] 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 for limiting its mobility in the horizontal direction RH. The holder 25 further 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.

[0055] The Figures 12 to 14 show the shower base plate 11 with inserted holder 40 in different pre-assembly stages.

[0056] 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.

[0057] 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.

[0058] Fig. 14 shows the holder 40 with a mounted locking ring 33. 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 required.

[0059] 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 (see Fig. 2 ).

[0060] 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. However, with regard to the adjusting device 150, it is irrelevant whether a drainage device on which the adjusting device 150 is to be used comprises an adapter 200. Similarly, 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.

[0061] 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.

[0062] 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.

[0063] 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 therefore 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.

[0064] 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.

[0065] 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.

[0066] 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 created even without the use of the insert part 45.

[0067] 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. Furthermore, it can 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.

[0068] 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.

[0069] 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 into 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. Furthermore, 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 pressed out of the recess, for example by means of a screwdriver. The catch 64 thus secures the base part 20 against accidental unscrewing.

[0070] 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 onto 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.

[0071] The spacer 49 also has two predetermined separation points 53, at which it can be easily separated, for example, using a cutter knife, into two half-shell-like individual parts. 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.

[0072] The Figure 21 shows the sealing ring 43, which is a standard sealing ring made of a flexible material with an outer diameter D4.

[0073] 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 lock 63. The internal thread 54 of the base part 20, which is compatible with this external thread 55, also has a flattened area. If the base part 20 and pressing ring 44 are rotated with slight pressure and reach the position in which the two flattened areas overlap, the bayonet lock 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.

[0074] 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.

[0075] 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 such 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 is additionally tightened. List of reference symbols

[0076] 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 57Bajonett lock 58Openings 59Receptacle (in 45) 60External thread (on 20) 61Internal thread (on 40) 62Screw connection (of 20 and 40) 63Bajonett lock 64Notch 65Recess (on 20) 66Intermediate support (below 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. A drain device (100) for installation in an opening (12) of a floor plate (10), preferably a shower floor plate (11), comprising: - an upper inlet opening (13) through which waste water can enter the drain device (100), - a cover (14) bounding the upper inlet opening (13) and carried by an extension element (15), - parts pre-mountable in the floor area and fluidically connectable to a drainpipe (16), so that waste water passing through the inlet opening (13) can enter the drainpipe (16), wherein the drain device (100) further comprises an adjusting device (150) with the following components: - a receiver (40) for installation in the base plate (10) with a support (21) and an inner contour (22) which has an inner diameter (D2); - a holder (25) for the extension element (15), which holder can be inserted into the receiver (40), wherein the holder (25) has an outer contour (26), an upper side (27) and a lower side (28), and wherein the outer contour (26) has an external diameter (D1) which is smaller than the internal diameter (D2) of the receiver (40), so that the holder (25) inserted into the receiver (40) is movable in a horizontal direction (RH) within a horizontal clearance range (SH) in a preassembled state (Z1), - a fixing element (30) attachable to the receiver (40) and having an upper side (31) and a lower side (32), which fixing element (30) allows the holder (25) to be moved in the preassembled state (Z1) in the vertical direction (RV) relative to the fixing element (30), while leaving a clearance (SV), characterised in that the upper side (27) of the holder (25) has a recess (35) and the fixing element (30) has a projection (36) which can be inserted into the recess (35) and which, in the preassembled state (Z1), is arranged within the recess (35) and limits the clearance (SH) of the holder (25) with respect to the fixing element (30) in the horizontal direction (RH), so that in the preassembled state (Z1) of the receiver (40), holder (25) and fixing element (30), the holder (25) is freely movable in the receiver (40) within a vertical clearance (SV) and a horizontal clearance (SH).

2. Drain device (100) according to claim 1, characterised in that the horizontal clearance (SH) of the holder (25) relative to the receiver (40) in the preassembled state (Z1) is at least 1 mm in the horizontal direction (RH).

3. Drain device (100) according to claim 1 or 2, characterised in that the vertical clearance (SV) of the holder (25) between the receiver (40) and the fixing element (30) is 0.1 mm to 2 mm.

4. Drain device (100) according to one of the claims 1 to 3, characterised in that the holder (25) has an internal screw thread (29) and the extension element (15) for the cover (14) has an external screw thread (17) that can be screwed into the internal screw thread (29), so that the installation height of the extension element (15) can be adjusted in relation to the base plate (10).

5. Drain device (100) according to one of the claims 1 to 4, characterised in that the inner contour (22) of the receiver (40) and / or the outer contour (26) of the holder (25) are round.

6. Drain device (100) according to one of the claims 1 to 5, characterised in that a locking ring (33) is provided as the fixing element (30).

7. Drain device (100) according to one of the claims 1 to 6, characterised in that the fixing element (30) and the receiver (40) can be connected by means of a locking connection (18).

8. Drain device (100) according to claim 7, characterised in that the latching connection (18) is formed by at least one projection (34) provided on the fixing element (30) and at least one recess (23) provided on the receiver (40), into which recess the projection (34) can be latched.

9. Drain device (100) according to one of claims 1 to 8, characterised in that the fixing element (30) has at least one opening (19) and / or the holder (25) has at least one opening (24) for the passage of seepage water.

10. Floor plate (10), preferably shower floor plate (11), comprising a drain device (100) according to one of claims 1 to 9.