Sanitary bath, in particular bath

Abstract

The invention relates to a sanitary tub (1), in particular a bathtub, with a tub base (1.2), with at least one tub wall (1.3) extending substantially vertically or steeply relative to the tub base (1.2), with a drain opening (1.4) provided with a drain valve (2), and with an overflow (3). To improve such a tub with regard to its function and appearance by reducing or eliminating one or more of the problems identified in the prior art, such as the direct visibility of soiling at the drain and overflow and / or impaired comfort when sitting or leaning in the tub due to attachments projecting into the tub from the overflow or drain, the invention provides that the drain opening (1.4) and the overflow (3) are arranged in a concealed manner behind an inner tub cover (5) which is detachably integrated into the substantially vertically or steeply extending tub wall (1.3).

Description

[0001] The invention relates to a sanitary tub, in particular a bathtub, with a tub base, with at least one tub wall running essentially vertically or steeply relative to the tub base, with a drain opening which is provided with a drain valve, and with an overflow.

[0002] Sanitary ware such as shower trays and bathtubs are available in a wide variety of designs. These ware is usually made of enameled steel or plastic material, especially acrylic.

[0003] In conventional showers and bathtubs, the drain and overflow are directly visible. Consequently, any dirt or grime on the drain or overflow is immediately apparent and unsightly. The drain and overflow of conventional showers and bathtubs are generally difficult or costly to keep clean. The drain of a sanitary bathtub is designed as a drain opening in the tub floor, while the overflow is usually located in the upper part of the tub wall. In particular, the overflow opening with a common attachment, such as a rotary handle for operating the drain valve, or sometimes even a hood-shaped cover for the drain valve that protrudes upwards from the tub floor, is often perceived as bothersome in a bathtub. Such an attachment protruding into the tub can impair the user's comfort when sitting or leaning in the tub.Furthermore, some bathtub users find it unsatisfactory that they cannot see the position of the drain valve—that is, whether it is open or closed—when the tub is full due to bath foam. Additionally, some users of bathtubs with a so-called click-type drain valve complain that the valve must be operated from below the water level when the tub is full. In particular, bathtub users criticize the lack of a coordinated or uniform design between the bathtub and the drain and overflow system offered by bathroom fixture retailers. Moreover, the space required under or outside conventional bathtubs due to the complex overflow piping can be significant, potentially leading to installation problems. Conventional showers and bathtubs are equipped with hand showers, with the hose supplying the hand shower typically hanging inside the tub.However, there are also technical solutions where the water supply hose connected to the hand shower can be housed in a separately manufactured hose box located next to the bathtub. The hose can then be pulled out of the hose box as needed and reinserted after use. Such a hose box typically requires drainage, as residual water often flows from the hand shower into the hose box via the hose after use. Furthermore, bathtubs equipped with a combined inlet and overflow fitting are known. With such combined inlet and overflow fittings, additional safeguards for drinking water quality are necessary. For this purpose, so-called pipe interrupters may be installed in the drinking water line.Furthermore, the overflow of a conventional bathtub is connected to the drain body of the tub drain, which typically contains a hydraulic trap with a water seal. If the hydraulic trap dries out, for example, due to prolonged disuse of the bathtub and high ambient temperatures, foul-smelling drain gases can enter the bathroom via the overflow pipe, even if the bathtub drain valve is closed.

[0004] Based on this, the invention aims to improve the function and appearance of a sanitary tub, in particular a shower or bathtub, of the type mentioned above, by reducing or eliminating one or more of the problems identified above in the prior art.

[0005] This problem is solved by a sanitary tub with the features specified in claim 1. Advantageous embodiments of the solution according to the invention are the subject of the dependent claims referring back to claim 1.

[0006] The sanitary tub according to the invention, in particular a shower or bathtub, is characterized in that the drain opening and the overflow are arranged in a concealed manner behind an inner tub cover, which is detachably integrated into the tub wall, which is essentially vertical or steeply running.

[0007] This ensures that the drain and overflow, as well as any dirt adhering to the drain and / or overflow, are not within the direct line of sight of the tub. Since the drain opening and overflow are concealed behind the cover in the tub according to the invention, the external overflow piping otherwise customary in the prior art can be omitted, potentially allowing the tub to be installed in locations with limited space. Because the cover is detachably integrated into the essentially vertical or steeply sloping tub wall, the tub according to the invention allows for easy cleaning and maintenance of the drainage system and the overflow.

[0008] The solution according to the invention, in which the drain opening and the overflow are concealed together behind the cover, particularly simplifies the installation of the drain valve and overflow. For this purpose, the drain valve and the overflow are, for example, arranged or mounted on a common drain housing. In this case, by mounting the common drain housing to the sanitary tub, the drain valve and the overflow can be connected to the tub simultaneously. This saves installation time. The tub according to the invention can have a common bottom opening for the drain and the overflow, to which the drain housing can be, or is, mounted. The common drain housing for the drain and the overflow can also be referred to as a central connection or common connection.

[0009] A further embodiment of the invention is characterized in that the tub wall has a niche in which the drain opening and the overflow are arranged. This embodiment makes it possible to achieve a concealed arrangement of the drain opening and overflow in a compact design and with minimal additional material required for the cover. In particular, this embodiment makes it possible to design the inner surface of the sanitary tub as a substantially closed, preferably largely flush, surface.

[0010] Accordingly, a preferred embodiment of the invention provides that the tub wall of the tub according to the invention and the cover, when viewed horizontally in the mounted state of the cover, are essentially flush with each other on the inside of the tub.

[0011] According to a further embodiment of the invention, guides for the positive-locking connection of the cover are formed or attached to and / or within the niche. This embodiment enables simple assembly as well as precise and reliable positioning of the cover on the essentially vertical or steeply sloping wall of the tub. The guides are preferably arranged at a distance from the vertical or steeply sloping wall of the niche. Arranging the guides at a distance from the vertical or steeply sloping wall of the niche has the advantage that the quality of the guides is independent of manufacturing tolerances of the niche of the sanitary tub. Thus, in particular, the distance between the guides and their parallelism can be achieved with high dimensional accuracy, regardless of manufacturing tolerances of the niche of the sanitary tub.A separate manufacture of the guides and their spaced arrangement relative to the vertically or steeply running wall of the niche is particularly advantageous in cases where the tub according to the invention is made of material that can have considerable manufacturing tolerances, as is the case, for example, with ceramic material or mineral casting.

[0012] According to a further advantageous embodiment of the invention, the guides are designed as column-shaped guide elements, for example, as straight rods with a circular cross-sectional profile. Such guide elements ensure high functional reliability for smooth movement of the cover. Furthermore, the guide elements are preferably connected to a drain housing fixed at the drain opening. This allows the number of through-holes or mounting holes and associated seals in the tub body to be reduced to a minimum. In the base area of ​​the niche, a single through-hole may suffice, to which the drain housing can be attached using a seal. In addition to the drain valve and overflow, the drain housing may preferably also include mounting elements, such as threaded sleeves cast into the drain housing, for attaching the aforementioned column-shaped guide elements.

[0013] As mentioned above, an advantageous embodiment of the invention provides that the cover is movably mounted, preferably slidably. This allows for particularly convenient access to the drain valve for cleaning and maintenance. For this purpose, the movably mounted cover can, for example, be moved into a maintenance position, preferably pushed upwards, and then moved back into a functional or operating position after the drain valve has been serviced.

[0014] A further advantageous embodiment of the invention is characterized in that the drain valve can be actuated by means of the movably mounted cover. This extension of the cover's functionality contributes to a simple design and easy cleaning of the sanitary tub.

[0015] In a further embodiment, the tub according to the invention comprises a locking mechanism, wherein the tub wall has a counter bearing for supporting the locking mechanism, wherein the cover has a driver which tensions the locking mechanism when the cover is moved downwards, and wherein the locking mechanism performs its locking function in a specific position of the driver. This allows for a reliable and convenient actuation function with respect to the cover.

[0016] With regard to simple, reliable and convenient operation of the drain valve, a further embodiment of the invention provides that the drain valve is designed as a spring-loaded valve and / or is equipped with a locking tensioning mechanism.

[0017] A further advantageous embodiment of the invention is characterized in that a drain housing is attached to the drain opening, which is provided with an overflow, wherein the overflow is designed in the form of an overflow pipe projecting upwards from an upper surface of the drain housing. This allows the drain and overflow technology of the sanitary tub according to the invention to be implemented in a particularly space-saving manner. The overflow pipe is preferably connected to the drain housing via a detachable connection, for example, a push-fit or screw connection. The detachable connection is advantageous from a manufacturing perspective. Furthermore, this design facilitates cleaning of the overflow and the drain. The upper end of the overflow pipe terminates at a vertical distance relative to the upper surface of the sanitary tub or to the underside of a horizontal rib of the cover.

[0018] According to a further embodiment of the invention, the overflow pipe is composed of several detachably connected pipe segments or is designed to be telescopic. This embodiment allows for variable adjustment of the overflow level defined by the overflow pipe, whereby the adjustment can be carried out simply by omitting or adding one of the pipe segments or by pushing the telescopic segments together or pulling them apart.

[0019] A further embodiment of the invention provides that the drain valve is mounted in the drain housing, preferably in a removable manner. This embodiment allows the drain housing and drain valve to be mounted together. If the drain valve is removable within the drain housing, this embodiment facilitates cleaning of the drain housing and any connected wastewater pipe.

[0020] In a further embodiment of the invention, the bathtub according to the invention comprises a hand shower with a hose connected to it, the hose being connected to a hose connector located behind the cover, and the hose being extendable and retractable through a through-opening formed in the cover or the bathtub wall. The hand shower can thus be stored within easy reach on the cover, with the hose connected to the hand shower concealed behind the cover when the hand shower is not in use. The hose stored behind the cover therefore does not hang into the bathtub body. The user of the sanitary bathtub is not bothered by the hose stored behind the cover. Any residual water that may flow from the hand shower after use can flow through the through-opening in the cover, along the hose, towards the drain valve.Additional drainage, as is provided in known, separately manufactured hand shower hose boxes for bathtubs, is not required in this embodiment of the sanitary tub according to the invention.

[0021] In this context, a further embodiment of the bathtub according to the invention provides that a niche wall of the bathtub is equipped with a holder for the positive-locking reception of the hand shower. This allows for the hand shower to be stored detachably, independently of the cover. The cover, which is preferably slidably mounted, can thus be moved independently of the hand shower stored in the holder. This makes moving the cover easier.

[0022] A further advantageous embodiment of the invention is characterized in that a niche wall of the tub is provided with a water inlet, wherein the outlet of the water inlet is preferably arranged at a vertical distance above an overflow level defined by the overflow. This embodiment contributes to a reduced design in the area of ​​the sanitary tub, as the water inlet for filling the tub, which is usually visible in the prior art, is eliminated, and instead a water inlet is arranged on the niche wall of the tub wall, which is concealed by the cover. If the outlet of the water inlet is arranged at a vertical distance above an overflow level defined by the overflow, a free flow path at the water inlet is ensured, and thus the drinking water quality is guaranteed, even when the fill level of the sanitary tub corresponds to the overflow level defined by the overflow.An additional pipe interrupter to safeguard drinking water quality is therefore not required. The vertical distance between the outlet of the water inlet, which is concealed by the cover, and the maximum overflow level defined by the overflow is, for example, at least 20 mm, preferably at least 50 mm.

[0023] In a further embodiment of the bathtub according to the invention, its overflow has a mechanical odor barrier. This prevents the ascent and ingress of sewer gas via the overflow piping, independent of any existing hydraulic odor trap, which can lose its effective water seal height, for example, due to evaporation of the seal water during prolonged periods of disuse of the bathtub and high ambient temperatures. The ingress of sewer gas via the drain valve can be prevented by closing the drain valve. The mechanical odor barrier of the bathtub's overflow, located behind the cover, can be formed, for example, by a spring-loaded flap valve, a bell-shaped diaphragm valve, or a duckbill valve. According to a further or alternative embodiment of the invention, the drain housing can also be provided with such a mechanical odor barrier.

[0024] The invention is explained in more detail below with reference to a drawing illustrating several exemplary embodiments. The drawing shows: Fig. 1 a sanitary tub according to the invention with an inner cover, in a perspective longitudinal side view; Fig. 2 the sanitary tub made of Fig. 1 with inner tub cover, in a perspective cross-side view; Fig. 3a a section of the tub wall of the sanitary tub made of Fig. 2 Fig. 3 shows a section of the tub wall of a sanitary tub according to the invention in a further embodiment, without the tub's inner cover, in a perspective interior view; Fig. 4 shows a section of the sanitary tub according to the invention, in a perspective exterior view looking towards the drain housing; Fig. 5 shows the drain housing made of Fig. 4 with the overflow pipe from Fig. 3a or 3b, in a perspective view, with an enlarged view of a mechanical odor barrier integrated in the overflow pipe; Fig. 6 the section of the trough according to the invention made of Fig. 4 with the drain housing in a vertical sectional view; and Fig. 7 a lower section of the in Fig. 3a The niche shown in the bathtub wall without the inner cover, with the overflow pipe shown in dashed lines, extending upwards, in a perspective interior view.

[0025] The sanitary tub 1 according to the invention, as shown in the drawing, is designed in the form of a bathtub. The sanitary tub 1 has a laterally projecting, circumferential collar 1.1 on its upper side. The tub 1 can be placed with the collar 1.1 onto a tub surround (not shown), which defines a cavity that receives the tub body.

[0026] The sanitary tub (bathtub) 1, as is known per se, has a tub base 1.2, a tub wall (wall) 1.3 which extends substantially vertically or steeply relative to the tub base 1.2, a drain opening 1.4 which is provided with a drain valve 2, and an overflow 3. According to the invention, the drain opening 1.4 and the overflow 3 are arranged so as to be concealed behind an inner tub cover 5, which is detachably integrated into the substantially vertically or steeply extending tub wall 1.3. For this purpose, the tub wall 1.3 preferably has a niche 1.6 in which the drain opening 1.4 and the overflow 3 are arranged together (cf. Figures 1 to 3a ).

[0027] The cover 5 is, for example, plate-shaped and has an angled, substantially horizontally extending plate area or flange 5.1 on its upper side. The cover 5 is guided so that it can be moved downwards or upwards, for example by the geometry of the basin or niche. Preferably, guides 7 running parallel to each other are formed or arranged in the niche 1.6 for this purpose, to which the cover 5 is or can be positively connected. The guides 7 can, for example, be implemented in the form of parallel ribs that extend vertically or steeply along the narrow niche sides (niche walls 1.61, 1.62) facing each other. The cover 5 can have elements on its vertically or steeply extending edges that positively engage the guides with minimal play, for example, flanges with grooves associated with the ribs (guides 7).The guides 7 can be directly connected to the opposing lateral niche walls 1.61, 1.62 or formed integrally with said niche walls 1.61, 1.62 (cf. . Fig 3a ).

[0028] For cleaning or maintenance purposes, the cover 5 can be pushed or pulled up into a maintenance position and, if necessary, removed (see Fig. 3a ).

[0029] In Fig. 3bFigure 1 shows a variant of the trough 1 according to the invention, in which the guides 7 associated with the movable cover 5 are arranged at a distance from the vertically or steeply extending wall 1.3 of the niche 1.6, for example, at a distance from the mutually facing lateral niche walls 1.61, 1.62. The guides 7 are preferably designed as column-shaped guide elements 7'. A further embodiment of the guide elements 7' (not shown) provides that the guide elements 7' are connected to a drain housing 8 fixed at the drain opening 1.4.

[0030] The base 1.2 of the tub 1 according to the invention is designed with a slope, wherein the drain opening 1.4 of the tub 1, in the intended assembled state of the tub 1, is located in the lowest surface area 1.21 of the slope. This lowest surface area 1.21 of the slope is thus located in the niche 1.6 formed in the tub wall 1.3. In a normal or initial position of the cover 5 inserted into the niche 1.6, in which the upper surface of the cover 5 lies substantially or almost flush with the upper surface of the collar 1.1 of the tub 1, the drain opening 1.4 formed in the base 1.2 of the tub is not directly or at least hardly visible. The same applies to the overflow 3, which is concealed by the cover 5. In this case, only the completely closed section of the tub floor 1.2 located in front of the cover 5 is essentially visible from above.

[0031] The cover 5 and the associated guides 7, 7' arranged in the niche 1.6 are preferably designed such that, when viewed horizontally in the assembled state, the tub wall 1.3 and the cover 5 are essentially flush with each other on the inside (cf. Figure 1 and 2 ).

[0032] The drain opening 1.4 formed in the tub base 1.2 is, for example, circular. Next to the drain opening 1.4, an overflow opening 3.1 for the overflow 3 of the tub 1 is formed in the tub base 1.2. The overflow opening 3.1 is also arranged in the niche 1.6 at a horizontal distance from the drain opening 1.4 and is preferably also circular (see figure). Figures 3a and 3b ).

[0033] However, it is also within the scope of the invention to design the drain opening 1.4 with a different shape, for example as an oval through-hole or elongated hole. If the drain opening 1.4 is designed as an oval through-hole or elongated hole, it preferably also serves as an opening for the overflow 3, i.e., the elongated drain opening then forms a common through-hole for the drain 6 and the overflow 3 of the tub 1.

[0034] A drain housing 8 is arranged on the underside of the tub base 1.2 in the area of ​​the drain opening 1.4, creating a watertight seal around the drain opening 1.4. The drain housing 8 defines a common connection for the drain 6 and the overflow 3. The drain housing 8 is elongated, for example, channel-shaped. It has a circumferential mounting flange 8.2 at its elongated opening 8.1 for mounting on the underside of the tub base 1.2. The elongated opening 8.1 and the mounting flange 8.2 surround the drain opening 1.4 and the overflow opening 3.1. The mounting flange 8.2 is provided with a ring seal 9 on its upper side. The ring seal 9 is, for example, inserted into a circumferential groove of the mounting flange 8.2.

[0035] The drain valve 2 is mounted in the drain housing 8 and is preferably removable from the inside of the basin 1 or its recess 1.6. The overflow 3, located in the recess 1.6, is designed as an overflow pipe 3.2 projecting upwards from an upper surface of the drain housing 8. The overflow pipe 3.2 is preferably connected to the drain housing 8 via a detachable connection, for example, a push-fit connection. The overflow pipe 3.2 connected to the drain housing 8 can thus be detached from the drain housing 8 and removed from the basin 1 if necessary. The upper end of the installed overflow pipe 3.2 terminates at a vertical distance from the horizontal flange (web) 5.1 of the cover 5.

[0036] To attach the drain housing 8 to the tub 1, a drain valve cup 6.1 is inserted from above into the drain opening 1.4. This cup, for example, has a circular cylindrical pipe connection with an external thread, by means of which the drain valve cup 6.1 can be screwed to an internal thread formed in the drain housing 8. An overflow valve cup 3.3 is inserted into the overflow opening 3.1 in the tub base 1.2, which is associated with the overflow 3 and is located horizontally next to the drain opening 1.4. The overflow valve cup 3.3 can also have a circular cylindrical pipe connection with an external thread, by means of which the overflow valve cup 3.3 can be screwed to an internal thread formed in the drain housing 8. Alternatively, the overflow valve cup 3.3 can have a cup base 3.31 containing several through-openings, with a central opening in the cup base 3.31.31 a through hole for the positive locking of a screw having a conical or lens-shaped head (not shown) is formed, and wherein a threaded sleeve for screwing in the screw is formed or cast into the drain housing 8.

[0037] The drain valve 2 can be actuated by means of the slidably mounted cover 5. For this purpose, the drain valve 2 is designed as a spring-loaded valve and preferably equipped with a locking mechanism 30 or 30'. The locking mechanism (also called a click-clack mechanism) enables various operating positions (functional positions), namely a (first) operating position in which the drain valve 2 is open (see figure). Figures 3a , 6 and 7), and a (second) operating position in which the drain valve 2 is closed. The sliding cover 5 has a driver 5.2 on its inner side facing the recess 1.6, which, when the cover 5 is moved downwards, moves a valve body 2.1 of the drain valve 2 into a closed position and tensions the locking mechanism 30 or 30', whereby the locking mechanism 30 or 30' performs its locking function in a specific position of the driver 5.2. In the Figures 3a and 6 It is shown that the tub wall 1.3 in the niche 1.6 has a counter bearing 10 for supporting a locking clamping mechanism 30'. The locking clamping mechanism 30 or 30' is actuated by the downward displacement of the cover 5 by means of the driver 5.2 or by means of the flange (web) 5.1 of the cover, which projects rearward into the niche 1.6. The flange (web) 5.1 can also be referred to as the driver.

[0038] The slidingly mounted cover 5 is dimensioned so that it can be in a normal or starting position, as in the Figures 2 and 6 shown, in which the top of the flange 5.1 of the cover 5 is preferably flush with the top of the collar 1.1 of the tub 1, and the tub bottom 1.2 defines a gap (drainage gap S) in the direction of the drain valve 2 or overflow 3.

[0039] When the cover 5 is moved downwards to actuate the drain valve 2, for example, to close the drain valve 2, the height of the drain gap S is reduced. In a specific position of the actuator 5.1 or 5.2 of the cover 5, in which the drain valve 2 is closed, the locking mechanism 30 or 30' exerts its locking function. The drain valve 2 remains closed until the locking mechanism is actuated again by means of the actuator 5.1 or 5.2 of the cover 5. Preferably, the cover 5 is associated with a return mechanism 32, which automatically raises the cover 5 relative to the tub bottom 1.2 after the drain valve 2 has been closed by means of the cover 5, so that a drain gap is again created between the cover 5 and the tub bottom 1.2. The return mechanism 32 can be integrated into the locking mechanism (click-clack mechanism) 30', which is supported on the counter bearing.

[0040] In the illustrated embodiment, the overflow pipe 3.2 has a handle 3.5 at its upper end. The lower end of the overflow pipe 3.2 can be provided with a sealing ring 3.6 on the outside (see figure). Figures 3a , 5 and 7 The outer circumference of the sealing ring 3.6 is preferably conical. The sealing ring 3.6 seals the overflow pipe 3.2 watertight against the conical wall of the overflow valve cup 3.3. The overflow pipe can be made in one piece or in multiple pieces. For example, the overflow pipe 3.2 can be composed of several detachably connected pipe segments or be telescopic. This allows for variable adjustment of different overflow levels as needed.

[0041] The cover 5, like the tray 1, can be made of, for example, enamelled steel, plastic, ceramic, or cast mineral material. It is also within the scope of the invention for the cover 5 to be made of a different material than the tray 1. The substantially vertical or steeply oriented section 5.0 of the cover 5 preferably has a completely closed visible surface without a through-hole. The angled, upper plate area or flange (web) 5.1 of the cover 5 can also have a completely closed visible surface without a through-hole. In the section described in the Fig. 1 and 2In the illustrated embodiment, the angled upper plate area or flange 5.1 of the cover 5 has a through-opening 5.4 for an optional hand shower 12 and a hose (water supply hose) 13 connected to it. When the hand shower 12 is not in use, the hose 13 is stored in the niche 1.6 and concealed by the cover 5 (see figure). Fig. 2 and 3a ).

[0042] The hose 13 is connected to a hose connector 14, which is concealed behind the cover 5. The hose connector 14 is preferably located in an upper region, for example in the uppermost quarter of the niche 1.6, and passes through a through-opening in a lateral niche wall 1.61, which is angled relative to the tub wall 1.3. The hose 13 can be extended and retracted through the through-opening 5.4 formed in the angled web or flange 5.1 of the cover 5. Furthermore, the rear niche wall 1.63 of the tub 1 is provided in its upper region, for example in the uppermost fifth of the niche 1.6, with a holder 15 for the positive-locking reception (storage) of the hand shower 12. The bracket 15 is located below the circumferential collar 1.1 of the tub 1, and is positioned lower than the top of the collar 1.1 in the niche 1.6.The bracket 15 has a sleeve- or clamping ring-shaped section 15.1 for the positive-locking reception of a tubular handle section 12.1 of the hand shower 12. The sleeve- or clamping ring-shaped section 15.1 of the bracket 15 is firmly connected to the niche wall 1.63 by means of a console- or angle-shaped fastening element. The section 15.1 of the bracket 15 can also be referred to as the shower hose guide.

[0043] Furthermore, one of the niche walls 1.61, 1.62 is provided with an optional water inlet 17. For example, the water inlet 17 is arranged on the niche wall 1.62 that faces the niche wall 1.61 having the hose connection piece 14. The water inlet 17 is arranged in the upper region, for example in the uppermost quarter or fifth of the niche 1.6, wherein the outlet opening 17.1 of the water inlet 17 is preferably located at a vertical distance above an overflow level defined by the overflow 3.

[0044] Control elements 19 and 20 are used to select the activation of the water supply 17 or the hand shower 12, and to set the water flow rate or water temperature. The control elements 19 and 20, located on the top of the collar 1.1 of the sanitary tub 1, are designed, for example, as rotary valves.

[0045] As in the Figures 4 , 5 and 6As shown, the drain housing 8 is provided with a hydraulic odor trap 21. The odor trap 21 is formed, for example, from a tubular hollow body 21.1, which has an upwardly projecting inlet 21.2 and an outlet 21.3 horizontally spaced from it, also projecting upwards. A downwardly projecting outlet 8.4 of the higher drain housing 8, which is connected to the underside of the tub bottom 1.2, is connected to the inlet 21.2, while a pipe elbow 22 fitted with a union nut is connected to the outlet 21.3 of the tubular hollow body 21.1. The connection between the outlet 8.4 of the drain housing 8 and the inlet 21.2 of the tubular hollow body 21.1, as well as the connection between the outlet 21.3 of the tubular hollow body 21.1 and the pipe elbow 22, are each designed as a watertight swivel joint. The tubular hollow body 21.1 of the odor trap 21 thus defines a vertical water deflection corresponding to a siphon with a specific water seal height.

[0046] To prevent drain gases from rising into the bathroom via the overflow 3 in the event of a loss of effective water seal height due to evaporation of the water seal during prolonged periods of non-use of the sanitary tub 1, the overflow 3 has a mechanical odor trap 25. The mechanical odor trap 25 is formed, for example, from a bell-shaped membrane 25.1, which is mounted as an elastically deformable valve body in a cage-like holder 25.2 (see Figure 1). Fig. 5The bracket 25.2, for example, has a sleeve- or tube-shaped base section 25.3, on the upper side of which several arms 25.4 are formed, extending upwards and connected to each other at a central connecting section 25.5. The base section 25.3, the arms 25.4, and the connecting section 25.5 define a number of through-openings 25.6 corresponding to the number of arms 25.4. The bell-shaped membrane 25.1 is attached to the connecting section 25.5. For this purpose, the connecting section 25.5 has a through-hole into which an upper, cone-shaped element 25.8 of the membrane 25.1, which has a radial projection or diameter-expanded head, is snapped. The bell-shaped membrane 25.1, when the overflow 3 is empty, forms a gas-tight seal against the inside of the sleeve- or pipe-shaped base section 25.3. When a certain volume of water flows into the overflow pipe 3...2, this water pushes the rubber-elastic membrane 25.1 inwards from the inside of the base section 25.3 and thus passes through the odor barrier 25.

[0047] The implementation of the invention is not limited to the embodiments shown in the drawing. Rather, numerous variants are conceivable which, even in embodiments differing from those shown, make use of the invention disclosed in the appended claims and the description. For example, the sanitary tub 1 according to the invention can also be designed differently than in the Figure 1 and 2The cover 5 can be shaped as shown; in particular, it can also have a substantially oval, round, or organic shape, wherein the slidably mounted cover 5 may then optionally have a concave inner surface when viewed horizontally. Furthermore, it is also within the scope of the invention to position or form the cover 5 and the niche 1.6, for example, in the area of ​​an elongated wall section 1.3' of the sanitary tub 1. It is also within the scope of the invention to combine detailed solutions of the various embodiments shown. Depending on the arrangement of the niche 1.6, the sanitary tub 1 according to the invention can be used in comparison to conventional bathtubs, in which the drain is directly visible in the tub floor 1.2 and the overflow 3 is directly visible in a tub wall 1.3 arranged, achieve a significant reduction in the space required for the drain and overflow piping to be mounted outside the tub 1.

Claims

1. Sanitary tub (1), in particular a bathtub, with a tub base (1.2), with at least one tub wall (1.3) extending substantially vertically or steeply relative to the tub base (1.2), with a drain opening (1.4) provided with a drain valve (2), and with an overflow (3), characterized in that the drain opening (1.4) and the overflow (3) are arranged so as to be concealed from view behind a cover (5) on the inside of the tub, which is detachably integrated into the essentially vertical or steep tub wall (1.3).

2. Sanitary tub (1) according to claim 1, characterized in that the tub wall (1.3) has a niche (1.6) in which the drain opening (1.4) and the overflow (3) are arranged.

3. Sanitary tub (1) according to claim 2, characterized in thaton and / or in the niche (1.6) guides (7, 7') are formed or fastened for the positive connection of the cover (5), wherein the guides (7, 7') are preferably arranged at a distance from the vertically or steeply running wall of the niche (1.6).

4. Sanitary tub (1) according to claim 3, characterized in that the guides (7') are designed as column-shaped guide elements (7'), wherein the guide elements (7') are preferably connected to a drain housing (8) fixed to the drain opening (1.4).

5. Sanitary tub (1) according to one of claims 1 to 4, characterized in that the cover (5) is mounted movably, preferably displaceably.

6. Sanitary tub (1) according to claim 5, characterized in that the drain valve () can be operated by means of the movably mounted cover ().

7. Sanitary tub (1) according to one of claims 1 to 6, characterized bya locking clamping mechanism (30, 30'), wherein the tub wall (1.3, 1.63) has a counter bearing (10) for supporting the locking clamping mechanism (30'), wherein the cover () has a driver (5.2) which tensions the locking clamping mechanism (30, 30') when the cover (5) is moved downwards, wherein the locking clamping mechanism (30, 30') performs its locking function in a specific position of the driver (5.2).

8. Sanitary tub (1) according to one of claims 1 to 7, characterized in that the drain valve (2) is designed as a spring-loaded valve and / or is provided with a locking clamping mechanism (30, 30').

9. Sanitary tub (1) according to one of claims 1 to 8, characterized in thata drain housing (8) is fastened to the drain opening (1.4), which is provided with the overflow (3), wherein the overflow (3) is designed in the form of an overflow pipe (3.2) projecting upwards directly on an upper side of the drain housing (8), wherein the overflow pipe (3.2) is preferably connected to the drain housing (8) via a detachable connection, preferably a plug connection or screw connection.

10. Sanitary tub (1) according to claim 9, characterized in that the overflow pipe (3.2) is composed of several detachably connected pipe segments or is designed to be telescopic.

11. Sanitary tub (1) according to claim 9 or 10, characterized in that the drain valve (2) is mounted in the drain housing (8), preferably in a removable manner.

12. Sanitary tub (1) according to one of claims 1 to 11, characterized in thatthe tub wall (1.3) and the cover (5) are essentially flush with one another when viewed horizontally on the inside of the tub (1) in the assembled state of the cover (5).

13. Sanitary tub (1) according to one of claims 1 to 12, characterized by a hand shower (12) with a hose (13) connected thereto, wherein the hose (13) is connected to a hose connection piece (14) arranged behind the cover, and wherein the hose (13) can be pulled out and inserted in reverse through a through opening (5.4) formed in the cover (5) or the tub wall (1.3).

14. Sanitary tub (1) according to claim 13, characterized in that a niche wall (1.63) of the tub (1) is provided with a holder (15) for the positive reception of the hand shower (12).

15. Sanitary tub (1) according to one of claims 1 to 14, characterized in thata niche wall (1.62) of the tub (1) is provided with a water inlet (17), wherein the outlet opening (17.1) of the water inlet (17) is preferably arranged at a vertical distance above an overflow level defined by the overflow (3).

16. Sanitary tub (1) according to one of claims 1 to 15, characterized in that the overflow (3) has a mechanical odor barrier (25), wherein the odor barrier (25) is preferably formed from a spring-loaded flap valve, a bell-shaped diaphragm valve or a duckbill valve.

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