EP2868820B1 - Toilet cistern arrangement - Google Patents

Description

The invention relates to a Spülkastenanordnung with an inner flushing water tank and a slide-on outer housing, in particular a ceramic housing, wherein the cistern assembly is mounted on a Spülkastenbank a water closet.

Cisterns are used in public and private sanitary facilities to provide a defined amount of water, with which a toilet, often called "toilet", can be flushed after use. The cistern is above the water closet, often abbreviated as "toilet", mounted to generate a height difference of the water level in the cistern and a toilet bowl a sufficiently large water pressure, with the fecal matter, urine or other waste from the toilet bowl in the sewer system be rinsed. If a cistern, for example, for structural reasons or cost reasons, can not be integrated as a concealed cistern in the building wall or a pretext, it must be arranged as a surface-mounted cistern above the water closet in the sanitary room.

Cistern assemblies often consist of an inner cistern and an outer cistern. The inner cistern, for example made of plastic, takes a Trim on and serves as a water tank. The external cistern, for example, made of ceramic, is the aesthetic lining of the inner cylinder and has controls for flushing and smooth water-repellent surfaces for easy and hygienic cleaning. According to these functions, the inner cistern is hereinafter also referred to as "rinse water tank", or the outer cistern as "housing".

The dimensions of cisterns are subject to manufacturing tolerances, ie statistical deviations from the dimensions. In particular cisterns made of ceramic can be accurately manufactured due to shrinkage during the firing process only within certain tolerances. These may be so large that mounting a cistern assembly comprising a flushing water container and a housing may be difficult or even impossible. The reason for this is that fasteners provided for assembly, for example supplied or present, do not match or are matched to the given dimensions of the flushing cisterns. When mounting conventional Spülkastenanordnungen the installer must in the case of large deviations, such as a ceramic housing, choose appropriate fasteners that allow him to connect the rinsing water tank present him with his existing housing and mount on the Spülkastenbank a water closet. The installation of known Spülkastenanordnungen with designated fasteners can thus be associated with difficult or time-consuming adaptation measures of the fasteners or their replacement for a fitter.

In JP 09095990 A discloses a cistern assembly wherein a cover is slipped over an inner flush water tank. The cover and the rinsing water tank are dimensioned such that in the assembled state, a holistic appearance is achieved. Also in JP 60109435 A such an arrangement is described.

In US 2,520,346 A is also a double-wall cistern arrangement shown. Between an inner container and an outer container, a gap is formed both laterally and on the bottom surface. Furthermore, fastening elements are provided, so that the containers are connected to one another despite the gap formed and possible dimensional tolerances can be. For this purpose, spacer elements and wide washers are formed between the housing parts.

The invention has for its object to provide a Spülkastenordnung with an inner cistern and an outer cistern, whose installation is simplified. As a result, an assembly can be performed faster and cheaper.

The object is achieved according to a Spülkastenanordnung according to claim 1.

The invention proposes a Spülkastenanordnung with an inner rinsing water tank and a slide-on outer housing before, which can be mounted on a Spülkastenbank a water closet. The housing may in particular be a ceramic housing. The housing has an interior that is large enough so that it can be placed over the rinsing water container, preferably from above or from the front, and thus at least partially receives the rinse water container in its interior or at least partially surrounds the rinse water container. The housing has an inlet opening for an inflow line for filling the rinsing water container and a drain opening for a drain line for rinsing water or overflowing water, these openings may be formed as a single opening, preferably on the underside of the housing. Furthermore, the housing has at least one housing passage opening for an actuating device for triggering a rinsing process, wherein the actuating device may be, for example, a button, preferably a double button, a knob or a lever. The housing may have a removable lid, so that, for example, the rinse water tank is accessible from above or an trim can be maintained without disassembly of the entire housing. The rinsing water container has an inlet opening and a drain opening, wherein the drain opening of the inner rinse water tank is aligned with those of the outer housing. The inlet opening can also be provided by an open-top flushing water tank at the top. The rinsing water container accommodates a known trim which essentially comprises a mechanism for triggering the rinsing operation, preferably two-stage with water-saving function, a bell jar with sealing of the outflow opening when no rinsing process takes place, an overflow pipe and a valve device for controlling the rinsing water level. In addition, the rinsing water container may be insulated, for example by a Styrofoam coating of the container walls, to prevent the formation of condensation in the Spülkastenanordnung. The Spülkastenanordnung can be mounted on a Spülkastenbank, ie on the part of a water toilet, which extends behind the toilet seat and is usually formed integrally with the toilet bowl. However, a Spülkastenbank can also be designed differently, so not necessarily designed as one piece with the toilet bowl or be placed at the height of the toilet seat, as long as it defines a mounting surface for the Spülkastenanordnung. In particular, the cistern assembly can be mounted not only as a seated cistern, but also as a separately arranged deep, semi-high or high-hanging cistern, in these cases, for example, a wall of a sanitary room would represent the Spülkastenbank. With a high arrangement of the cistern, that is approximately in or above the head height of a user, a remote release of the rinsing process, for example via a chain or cord is provided.

According to the invention, the connection of the flushing water container to the housing via fastening elements, which compensate for dimensional tolerances of a gap between an outer boundary surface of the flushing water tank and an inner boundary surface of the housing. In a mounted state of the cistern assembly Spülwasserbehälter and housing are firmly connected. In this case, there is a gap between the outer housing and the inner Spülwasserbehälter, which is limited by the outer surface of the Spülwasserbehälters and the inner surface of the housing. For example, due to manufacturing tolerances, the dimensions of the gap may vary in different cistern assemblies of the same embodiment. For example, if the interior of the housing fails due to production larger, there is a larger gap, and vice versa. According to these dimensional tolerances of the gap in the connection of the housing with the rinse water tank are compensated by fasteners.

According to the invention, the fastening elements are mounted longitudinally displaceably on the underside of the flushing water container. As a result, in particular a relative movement of the fastening elements to the rinsing water container and / or housing in the preassembled state is permitted in a defined direction along the fastening elements. Constructively, such storage can be implemented by forming grooves and / or guide slots on the underside of the flushing water tank, in which the fasteners are performed. By a suitable alignment of the longitudinally displaceable Fixing elements results in the possibility to compensate for dimensional tolerances in this defined longitudinal direction.

Such a cistern arrangement according to the invention has the advantage that the assembly is simplified compared to known Spülkastenanordnungen, for example, because no adaptation or no replacement of the intended fasteners, or even the Spülwasserbehälters or the housing is necessary. This saves time and costs during installation.

According to the invention, a dimensional tolerance in the direction transverse to the gap can be compensated by the fastening elements. Although the gap is generally to be understood as an arbitrarily shaped intermediate space, it has, in regions, approximately opposite boundary surfaces which define a direction transverse to the gap, namely a direction substantially perpendicular to the boundary surfaces. In particular, between the side surfaces of the housing and the Spülwasserbehälters the gap extends for the most part substantially parallel to the side surfaces, wherein the cross section of the gap in areas can change both continuously and discontinuously. A compensation of the dimensional tolerances across the gap has the advantage that a deviation of the distance of the housing is compensated by the rinsing water tank and can not cause difficulties in mounting the Spülkastenanordnung.

In an advantageous development of the invention, a dimensional tolerance of the order of magnitude of 1 mm to 20 mm, in particular of 5 mm to 15 mm, preferably of approximately 10 mm, can be compensated by the fastening elements. Since in manufacturing, in particular a housing made of ceramic, tolerances of the width of the housing in the mentioned orders of magnitude may occur, a deviation of the gap, for example in a width direction of the cistern, can be completely compensated by the fasteners.

In an advantageous embodiment of the invention, the housing is open at the bottom and the rinse water tank with its underside on the Spülkastenbank fastened. In this case, the fasteners may be interposed, so extend between the bottom of the Spülwasserbehälters and the mounting surface of the Spülkastenbank so that the bottom does not have to sit directly on the Spülkastenbank, but also on the Can sit fasteners. A housing that is open at the bottom, can be easily put over the flushing water tank and there is no opening, in particular no closable with a lid opening to provide at the top of the housing, for example, to use the rinsing water container can. The housing can be carried out inexpensively in one piece. An attachment of the flushing water tank with its underside on a Spülkastenbank is simple and allows an immediate outflow of rinsing water from the rinsing water tank through a drainage room in Spülboxbank in the toilet bowl without additional sealing elements.

In an advantageous embodiment of the invention are in a preassembled state in which the rinsing water container and the housing via the fasteners while loosely positively, but not firmly connected to each other, the fasteners relative to the rinse water tank and / or housing in the direction transverse to the gap by at least the dimensional tolerance displaceable. By such a displaceability of the fasteners, a dimensional tolerance of the gap between the rinsing water tank and the housing can be compensated during assembly by the fasteners. The cistern assembly can be converted from a disassembled state in which there is no connection between the rinse water tank and the housing in a pre-assembled state by the fasteners are temporarily attached, for example in the form of loose screw. In particular, a pre-assembled state by inserting screws and only loosening the nuts can be given. Because the fastening elements are displaceable in a preassembled state by at least the dimensional tolerance, that is to say in two opposite directions in each case by at least the possible deviation of the gap dimension, the dimensional tolerance of the gap during assembly can be compensated.

For mounting on the Spülkastenbank, first the fasteners connected from the outside with a first screw to the outer housing and then connected the fasteners from below through the Spülkastenbank through with a second screw with the Spülwasserbehälter. In a preassembled state both screw connections can still be loose. The first screw is to tighten from the outside, ie from outside the housing, preferably one Screw head is arranged outside the housing, a nut is disposed within the housing, and a fastening element between the nut and the inner surface of the housing is arranged. The second screw is to be tightened from below through the Spülkastenbank, ie from below the Spülwasserbehälters or the housing through a through hole in the Spülkastenbank. Preferably, a screw head is disposed below a support surface of the cistern, a screw shaft extends upwardly through a bank passage opening beyond the top of the cistern, a nut is disposed above the cistern, and a fastener is disposed between the nut and the top of the cistern. In this way, both screw connections are easily accessible for installation. After the first screw is tightened so that the housing is connected to the fasteners, the second screw is tightened so that the rinse water tank is firmly connected to the fasteners. Due to the fact that the fastening elements are movable relative to the rinsing water box or to the housing, an optionally existing dimensional deviation of the gap can be compensated during the assembly process.

In an advantageous development of the invention, an internal thread element is integrated into the flushing water container, in which engages a threaded portion of the second screw to clamp the fastener between the rinse water tank and the Spülkastenbank. The internal thread element can be poured into the bottom of the rinsing water container, for example into a bell-shaped thickening of the bottom into the interior of the container such that an externally threaded element, for example a threaded shank of a screw of the second screw connection, can engage from outside the container into the internal thread element , The internal thread element can also be used in a correspondingly formed recess in the rinse water tank, in particular glued in addition and / or secured against rotation, in particular be designed as a hexagon nut. Conversely, could also be integrated, for example, protruding from the ground external thread element in the rinse water tank, which engages in an internally threaded portion of the second screw. By integrating the threaded element in the rinse water tank, a flat design of the connection between the fasteners and the rinse water tank can be realized.

In an advantageous embodiment of the invention, the fastening elements are each formed in the form of angle profiles, wherein the housing associated with the first leg with a first passage opening for a first screw and the rinse water tank, or its underside, associated second leg a second passage opening for a second Has screw. The legs may have any angle to each other, but are preferably arranged at right angles to each other. Preferably, the first leg is substantially parallel to the gap, while the second leg preferably extends in the direction transverse to the gap. It is conceivable to provide the passage openings with internal threads, so as to save, for example, nuts of the screw.

In an advantageous embodiment of this development of the invention, the second passage opening formed in the respective second leg of the fastening elements is a slot which extends in the mounted state in the direction transverse to the respective associated gap. A slot is a production technology simple way to ensure the mobility of a fastener in the direction along to an associated gap. The slot can also be lowered in the leg, or be arranged in a thinner portion of the leg.

In an advantageous development of the invention, the side walls of the flushing water tank in the region of the arrangement of the fastening elements each have a recess for receiving fastener and associated screw, or parts thereof, on. A return is to be understood as meaning a reduction in the horizontal cross section of the flushing water container in the assembled state, which can run continuously or discontinuously over the height. The construction of the flushing water tank with recessed side walls widens the gap locally. Thus, additional space is created between the housing and the rinsing water container, which can be used for receiving parts of a fastening element and / or a screw connection, in particular a protruding inside over the first leg screw shaft. The overall width of the housing can be reduced.

In an advantageous development of the invention, the underside of the rinsing water container in the region around an outflow opening in the cross-section approximately U-shaped outwardly, in particular bent, under training a slit-like receiving space for the fastener or a part thereof. In this case, it is meant a vertical cross section of the flushing water tank in the assembled state. The opening of the U-shaped wall profile faces outwards, ie towards the housing. The U-shaped cross-section delimits a slot-like narrow space outside or below the flushing water container, which can serve as a receiving space for at least one part, in particular a second leg, of the fastening element. In this way, the fasteners are guided on the underside of the Spülwasserbehälters.

In an advantageous embodiment of the invention, the housing is made of ceramic, preferably sanitary ware, more preferably sanitary porcelain. Ceramic enclosures are easy to clean due to their water-repellent and smooth surface and meet the hygienic and aesthetic requirements of sanitary facilities.

In an advantageous embodiment of the invention, the rinse water tank is made of plastic. A plastic container is inexpensive to manufacture and can be optimally adapted to an intended trim trim.

According to an independent aspect of the invention, there is provided a cistern assembly (particularly the manufacture and assembly of the cistern assembly of the type described above) according to a method comprising the following steps: A first step involves the manufacture of housings, particularly ceramic housings, whose dimensions are statistically different from subject to predetermined nominal dimensions. These dimensional tolerances are essentially determined by the manufacturing process, which includes, for example, a firing process of a ceramic, and the raw materials used. Various housings for cistern assemblies manufactured after this first step are not identical in their dimensions, but in particular have different internal and / or external dimensions which vary within certain tolerances between the housings. In particular, the inner boundary surface is pronounced differently in each case in several manufactured housings. A second step involves putting any housing made after the first step over an inner flush water tank. This creates a gap between an outer boundary surface of the rinse water tank and an inner boundary surface of the housing. Due to the dimensional tolerances of the manufactured housing among themselves, the dimensions of the respective gap for a particular selected housing previously unknown. Rather, the expected dimensional tolerances of the housing directly determine dimensional tolerances of the gap. A third step comprises the installation of a cistern assembly with an inner rinsing water container and a housing placed over it after the second step on a Spülkastenbank a water closet. In this case, the connection of the rinsing water container with the housing via fastening elements, which compensate for the dimensional tolerances of the gap.
In an advantageous development of the method according to the invention, a dimensional tolerance in the direction across the gap can be compensated in the third step by the fastening elements.

In an advantageous development of the method according to the invention, in the third step, a preassembled state, in which the rinsing water container and the housing are connected via the fastening elements in a loosely form-fitting, but not firmly frictionally connected manner, is produced. In this state, the fastening elements are displaceable relative to the rinse water tank and / or housing in the direction transverse to the gap by at least the dimensional tolerance.

In an advantageous development of the method according to the invention a state of the fixed assembly is prepared by first the fasteners connected from the outside with a first screw with the outer housing and then the fasteners from below through the Spülkastenbank with a second screw with be connected to the rinse water tank.

Figur 1

eine Ausführungsform der erfindungsgemäßen Spülkastenanordnung in einer Schnittansicht,

Figur 2

eine vergrößerte Detailansicht einer Verbindung nach Figur 1.

Embodiments of the invention are explained below with reference to the drawings. Hereby show:

FIG. 1

an embodiment of the cistern arrangement according to the invention in a sectional view,

FIG. 2

an enlarged detail view of a compound according to FIG. 1 ,

LIST OF REFERENCE NUMBERS

1

cistern

2

RinseTank

3

casing

4

Spülkastenbank

5

fasteners

6

gap

7

drain opening

8th

baseplate

9

accommodation space

10

first screw connection

11

second screw connection

12

Female member

13

first passage opening

14

second passage opening

15

first leg

16

second leg

17

return

18

outer boundary surface

19

inner boundary surface

20

mounting surface

21

Abflussraum

22

Housing through opening

23

Communication passage opening

24

Bank through opening

25

Side wall

FIG. 1 shows an embodiment of the cistern arrangement according to the invention in the mounted state. Here, the cistern assembly (1), apart from the schematically indicated trim, constructed symmetrically to a central axis, in principle, a single-ended structure would be conceivable. A bottom open housing (3) made of ceramic surrounds an open-top flushing water tank (2) made of plastic, which accommodates a well-known from the prior art trim. The housing (3) made of ceramic has considerable dimensional tolerances due to production. Both the housing (3) and the rinsing water tank (2) can also be made of other materials, such as metal, or the housing (3) also made of plastic, wherein the dimensional tolerances occurring are essentially determined by the material and an associated manufacturing process , The Spülkastenanordnung (1) is designed here as a seated cistern, with the Spülkastenbank (4) behind on the back of a standing or hanging water closet extends a toilet seat, which is located above a toilet bowl. The top of the Spülkastenbank (4) defines a two-part mounting surface (20) on which the Spülkastenanordnung (1) is mounted and which is interrupted by a discharge space (21) through which rinse water from the rinsing water tank (2) can flow into the toilet bowl. The mounting surface (20) may, depending on the design of the Spülkastenbank (4), also be integrally formed in one or more parts, be different in size and be aligned differently. Between the inner boundary surface (19) and the outer boundary surface (18) there is a gap (6) which circulates between the housing (3) and the rinse water container (2) and thus assumes a roughly tonal shape in space. The gap (6) is narrowing towards the top here, but can vary as desired in its circumferential direction both in the circumferential direction of the cistern assembly (1) and in its height. The size and shape of the gap (6), in particular its width, is also subject to tolerances due to the dimensional tolerances of the ceramic housing. A direction transverse to the gap (6) is to be understood as a direction substantially perpendicular to the boundary surfaces (18, 19), in particular radially outwards, preferably as the width direction of the cistern arrangement. In the embodiment shown, the largest dimensional deviation of the gap occurs in the lower region of the Spülkastenanordnung (1), where the dimensional tolerance of the ceramic housing up to 10mm in width, ie in FIG. 1 in the right / left direction, may be. In other possible embodiments, however, substantial deviations may occur in any other areas of the gap (6) and in other directions. The housing (3) has at the top a housing passage opening (22) for an actuating device, via which a flushing process can be triggered by the user. An inflow opening and a discharge opening of the housing (3) coincide in the embodiment shown with the open bottom of the housing (3), or are formed by these. From below, an inflow line into the housing (3) and further in the rinse water tank (2) can be inserted. But there are also embodiments with additional and inflow or outflow openings in the wall of the housing (3) conceivable, for example, with an inflow opening for an inflow line in the upper region of the housing (3) and a drain opening at the bottom of a bottom partially or completely closed housing (3). Through the discharge opening (7) of the rinsing water container (2), rinse water can flow into the discharge space (21) of the Spülkastenbank (4). The outflow opening (7) is here formed on the underside of the rinsing water container (2) in the bottom of the container and a bottom plate (8), which by a guided on both sides to the outside wall below the Rinse water tank (2) is formed. In the bottom region of the rinsing water container (2), a slit-like receiving space (9) which opens outwards in a U-shape and receives a second limb (16) of a fastening element (5) or guides it horizontally in the present form. There are two fastening elements (5) between the housing (3) and the rinse water tank (2) arranged in mirror image to each other.

FIG. 2 shows the connection of the housing (3) with the rinse water tank (2) in this embodiment in detail. The fastening elements (5) are designed as angle profiles made of metal with two legs of different length (15, 16). The present profile is formed approximately at right angles, although other angles may be suitable. In particular, a flat, ie not angled, profile and profiles with different, in particular varying cross sections could be used. Suitable angles of the profile and lengths of the legs (15, 16) result in each case from the geometry of the housing (3) and the rinsing water container (2). The first limb (15) bears against the inner boundary surface (19) on the inside of the housing (3) and is connected to the housing (3) by a first screw connection (10). Through a connection passage opening (23) in the housing (3), a fastening means, here a screw, can be introduced from the outside and engage in the first passage opening (13) of the first leg (15), which is provided with an internal thread. But it would also be the use of an internally threaded part, such as a nut, on the inside of the first leg (15) instead of an internal thread in the fastener (5) conceivable. Characterized in that the side wall (25) of the rinse water container (3) has a recess (17), arises in the region of the arrangement of the fastening elements (5) a space, a fastener (5) and / or an associated screw, or parts thereof, can record. In the present embodiment, a screw projecting inwardly beyond the first leg (15) is received below the recess (17) so that the housing (3) can be made narrower. The second leg (16) is at the bottom of the bottom of the rinse water tank (2). It is accommodated in the receiving space (9) in the bottom plate (8), wherein it could also be arranged below the bottom plate (8), so that it rests directly on the mounting surface (20). In addition, it can be mounted longitudinally displaceably in a direction transverse to the gap, for example by means of grooves or guide slots in the base plate (8) or the bottom wall of the flushing water container (2). The second leg (16) is connected to a second screw (11) connected to the rinse water tank (2) and the Spülkastenbank (4). Through a bank passage opening (24) in the Spülkastenbank (4), a fastening means, here a screw, from below through the second passage opening (14) of the second leg (16) are passed and in a position on the second leg (16) Engage internal thread element (12). The internal thread element (12), designed here as a mother, is recessed to flatter design in a recess of the second leg (16). Instead of a nut, another internal thread element (12) arranged on the rinsing water container (2) can also be provided, for example a plate with internal thread, which is supported against rotation in the recess. In particular, the internal thread element (12) may be poured into the bottom of a rinse water container (2) made of plastic accessible from the outside, or be cut directly into the bottom of the container. The second screw connection (11) extends through a passage opening in the base plate (8) into the receiving space (9). The rinsing water container (2) is firmly clamped on the cistern (4) by the second screw connection (11) via its base plate (8). Although a receiving space (9) is structurally advantageous. But it is not necessary, because it could also be a direct connection with the bottom of Spülwasserbehälters (2), ie waiving a trained base plate and the resulting receiving space created. For example, the flushing water container (2) could be screwed to the Spülkastenbank (4) via internal threaded elements (12) so that the second leg (16) of the fastening element (5) rests directly on the mounting surface (20). The internal thread elements (12) could also be present as sealed internally threaded parts inside the bottom of the flushing water tank (2) and connect through through holes in the bottom via the second screw (11) the flushing water tank (2) with the Spülkastenbank (4). The second passage opening (14) in the second leg (16) is designed as a slot. The length of the slot is matched to the dimensional tolerance of the gap (6) and is at least the predetermined by the manufacturing process of Spülkastenanordnung (1) dimensional tolerance, in the present case, for example, more than 10mm. The slot is formed in the recess of the second leg (16), but could also be drilled or milled into a non-recessed portion of the second leg (16). An inserted into the slot fastener, such as a screw is displaceable in a preassembled state along the extension direction of the elongated hole. In a preassembled state in which the screw (10, 11) are still loose, the Fixing element (5) perform a relative movement to the housing (3) and / or the rinse water tank (2). By first tightening the first screw connection (10), the first leg (15) of the fastening element (5) abuts the housing (3) according to its actual dimensions. The fasteners (5) are pulled outward as far as it dictates the existing gap (6). The fastening element (5) adapts to this dimensional tolerance during the tightening of the first screw connection (10) by a displacement in the direction transverse to the gap (6), in that the screw shank of the still loose second screw connection (11) is formed in the second passage opening (11) formed as a slot. 14) slides in the second leg (16) of the fastener (5) along. A Spülkastenbank (4) integral with the toilet bowl is usually made of ceramic. Dimensional tolerances of the Spülkastenbank (4) leading to varying positions of the bank passage openings (24), for example to a position of the second screw (11) further inside or outside, by the inventive compound with the fastening elements (5) also, at least partially, compensated ,

Claims (11)

1. A toilet tank arrangement (1) with an inner flushing water container (2) and an outer housing (3), particularly a ceramic housing, which can be placed over the flushing water container, wherein the toilet tank arrangement (1) can be mounted on a toilet tank seat (4) of a water closet, and wherein the connection of the flushing water container (2) to the housing (3) is realized by means of fastening elements (5), which compensate dimensional tolerances of a gap (6) between an outer boundary surface (19) of the flushing water container (2) and an inner boundary surface (18) of the housing (3),
   characterized in that the fastening elements (5) are arranged on the underside of the flushing water container (2), preferably within grooves and/or guide slots provided for this purpose, in a longitudinally displaceable manner such that a dimensional tolerance in the direction transverse to the gap (6) is compensated by the fastening elements (5).
2. The toilet tank arrangement (1) according to claim 1,
   characterized in that a dimensional tolerance on the order of 1 mm to 20 mm, particularly 5 mm to 15 mm, preferably about 10 mm, can be compensated by the fastening elements (5).
3. The toilet tank arrangement (1) according to one of claims 1 to 2,
   characterized in that the bottom of the housing (3) is open and the flushing water container (2) can be fastened on the toilet tank seat (4) with its underside, particularly with interposition of the fastening elements (5).
4. The toilet tank arrangement (1) according to one of claims 1 to 3,
   characterized in that the fastening elements (5) can be displaced relative to the flushing water container (2) and/or the housing (3) in the direction transverse to the gap (6) by at least the dimensional tolerance in a preassembled state, in which the flushing water container (2) and the housing (3) are in fact loosely connected to one another in a positive manner by means of the fastening elements (5), for example by means of loose screw connections, but not fixedly connected to one another in a force-fitted manner.
5. The toilet tank arrangement (1) according to one of claims 1 to 4,
   characterized in that an internally threaded element (12) is integrated into the flushing water container (2), particularly cast into the bottom of the flushing water container, wherein a threaded section of a second screw connection (11) engages into said internally threaded element in order to firmly clamp the fastening element (5) between the flushing water container (2) and the toilet tank seat (4).
6. The toilet tank arrangement (1) according to one of claims 1 to 5,
   characterized in that the fastening elements (5) are respectively realized in the form of angle profiles, wherein the first leg (15), which is assigned to the housing (3), contains a first through-opening (13) for a first screw connection (10) and the second leg (16), which is respectively assigned to the flushing water container (2) or its underside, contains a second through-opening (14) for a second screw connection (11) .
7. The toilet tank arrangement (1) according to claim 6,
   characterized in that the second through-opening (14), which is respectively formed in the second leg (16) of the fastening elements (5), is realized in the form of an oblong hole that in the assembled state extends in the direction transverse to the respectively associated gap (6).
8. The toilet tank arrangement (1) according to one of claims 1 to 7,
   characterized in that the sidewalls (25) of the flushing water container (2) respectively comprise a recess (17) for accommodating a fastening element (5) and an associated screw connection or parts thereof in the region of the arrangement of the fastening elements (5).
9. The toilet tank arrangement (1) according to one of claims 1 to 8,
   characterized in that the underside of the flushing water container (2) is in the region around an outflow opening (7) cross-sectionally shaped outward, particularly bent, in an approximately U-shaped manner such that a slot-like receptacle space (9) for the fastening element (5) or part thereof is formed.
10. The toilet tank arrangement (1) according to one of claims 1 to 9,
    characterized in that the housing (3) is made of ceramics, preferably sanitary ceramics, particularly sanitary porcelain.
11. The toilet tank arrangement (1) according to one of claims 1 to 10,
    characterized in that the flushing water container (2) is made of plastic.

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