NO20150209A1

NO20150209A1 - Concealed toilet cistern assembly

Info

Publication number: NO20150209A1
Application number: NO20150209A
Authority: NO
Inventors: Gudbjørn Karlsen; Hans Audun Grøtlien
Original assignee: Arvid Hanstad As
Priority date: 2015-02-12
Filing date: 2015-02-12
Publication date: 2016-08-15
Also published as: WO2016128371A1

Description

Concealed toilet cistern assembly

The present invention relates to a concealed toilet cistern assembly, comprising a cistern which is embedded inside a wall of a room within which a toilet is installed.

Background

Concealed or wall-embedded toilet cisterns are well known and their popularity is increasing. By placing the toilet cistern within a wall, only the toilet bowl will occupy space of the room and an improved appearance of provided.

A leakfrom a conventional stand-alone toilet, håving the toilet bowl and the cistern in one common structure, would merely flow onto the floor, typically the floor of a bathroom which is provided with a gully. Contrary to this, a leak from a concealed toilet cistern can result in severe damages on a building. Thus, early detection of such leakages and also access to the cistern is desirable for concealed toilet cisterns.

Access to the cistern is also desirable in order to facilitate repair and/or replacement of components, such as valves and mechanisms relating to the flushing function. Such access is often not compatible with the desire for a wall appearance which is as less as possible affected by the concealed cistern.

European patent application EP 1284327 discloses a concealed cistern assembly. In this solution, a frame is installed within the wall. The frame has an open front face which can be closed with an outside panel. Before closing the frame with the outside panel, a cistern is installed within the frame. The outside panel is equipped with push buttons for flushing. When installed, the outside panel is flush with the bathroom wall, however covers substantially the entire projection of the frame.

European patent application EP2821557 discloses a similartype of concealed toilet cistern. Here, a water tight shell partly surrounds the cistern in order to prevent a leakage within the bathroom wall. The shell has a large front opening facing towards and beyond the surface of the bathroom wall. Thus, if a water leakage from the cistern occurs within the wall, the water will not be able to flow to other portions of the wall. Rather, it may only flow into the room within which the toilet is placed. When the toilet and cistern is installed, the shell opening in the front is covered with a wall surface. In this wall surface, a relatively small plate comprising the flushing button is arranged.

The mentioned EP2821557 thus solves the problem of possible leakage damaging the inside of a bathroom wall. However, if one wants to replace the cistern or repair a component behind the wall surface that covers the shell front opening, that wall surface needs to be removed. Such an operation will often be cumbersome, as such walls often are provided with bathroom tiles. In some cases, it may be impossible to re-install such a wall front face with the original appearance.

Another publication dealing with the leakage issue of concealed cisterns, is EP2397613. Here, a possible leakage is transmitted into the room, beyond the wall surface.

An object of the present invention is to provide a concealed toilet cistern assembly, håving a cistern which may be removed without needing to remove or damage parts of the bathroom wall before such removal.

Another object is to exclude the possibility of a leak entering and damaging the bathroom wall.

The invention

According to the present invention, there is provided a concealed toilet cistern assembly comprising a cistern which has a water outlet and which is arranged inside a container. The container is arranged behind a bathroom wall surface and has a front panel thatfaces the bathroom wall surface. According to the present invention, a flush pipe extends from the water outlet inside the container and through the front panel.

A bathroom wall shall herein be understood as the wall within which the concealed toilet cistern assembly is arranged, hence the room in which a toilet shall be installed. Thus, it may not necessarily be a bathroom as interpreted in a strict sense, however any type of room within a building, in which the toilet is installed.

The skilled person will appreciate that the cistern also has a water inlet for providing flush water to the cistern.

The interface between the outer surface of the flush pipe and the front panel is watertight. Preferably the flush pipe is extended through an aperture in the front panel and then welded to the front panel, thereby establishing a watertight interface as well as securing the flush pipe to the front face. However, as the skilled person will appreciate, other means for securing and sealing are possible, for instance using a suitable glue.

In a preferred embodiment, the bathroom wall surface has a wall aperture which has a wall aperture width that is larger than the cistern width. Moreover, the wall aperture height can be smaller than the cistern height, however larger than the cistern depth.

These features makes it possible to transport the cistern through the wall aperture, while still maintaining a relatively small wall aperture. As will be appreciated by the person skilled in the art, the necessary size of the wall aperture will depend on the design of the cistern. For instance, by designing a cistern håving a small depth, the height of the wall aperture may also be small. With the term "larger than the cistern width / cistern depth", is meant a distance at least so large that the cistern may be transported through the wall aperture without causing damage to the wall aperture or to the cistern. It is also noted that the term depth herein does not relate to the water depth within the cistern. Rather, it relates to the dimension perpendicular to its width and height.

Advantageously, the wall aperture can be covered by an operating panel which comprises push buttons adapted for flushing. Thus, when installed, the operating panel will conceal the wall aperture. Moreover, when removed, the cistern may be transported through the wall aperture without affecting the bathroom wall.

The container comprises a container aperture håving an area through which the cistern is able to pass. In preferred embodiments, the flush pipe extends through said front panel in a position below the container aperture.

The container aperture will advantageously have a container aperture width which is larger than the cistern width. Moreover, the container aperture will advantageously have a container aperture height which is smaller than the cistern height and larger than the cistern depth.

Again, as will be described below with reference to the drawings, by the term cistern depth is herein meant the dimension perpendicular to the height and the width. Thus, the term should not be confused with the height of the water column within the cistern.

Preferably, when the cistern is in the installed position within the container, more than half of its dimension corresponding to its height is below the lower rim of the wall aperture. Thus, when the cistern is installed through the wall aperture, it is moved a significant distance downwards in the vertical direction. It is also preferred that a water level in the cistern, when it is filled with flush water, is below the lower rim of the wall aperture. Moreover, this filled water level is preferably lower than a lower rim of the container aperture.

In one embodiment, the container aperture is arranged within the front panel of the container and coincides with the wall aperture. In such an embodiment, an aperture frame can preferably protrude out from the front panel and through the wall aperture, in order to prevent possible water penetration between the wall and the front panel. The aperture frame advantageously has a watertight connection with the container aperture.

The concealed toilet cistern assembly can comprise a guiding arrangement which is adapted to guide the cistern downwards within the container. The guiding arrangement can provide alignment and support the engagement between the water outlet and the flush pipe. Preferably, the guiding arrangement comprises guide protrusions and guide slots. The guiding arrangement facilitates instalment of the cistern into the container, comprising the engagement of the water outlet of the cistern with the flush pipe within the container.

Preferably a flush pipe attachment organ extends between an inner surface of a container panel and the flush pipe. Its engagement with the flush pipe is at a distance from the front panel. The flush pipe attachment organ contributes in retaining the flush pipe in a fixed position when the cistern is installed.

In preferred embodiments, the depth of the cistern is larger at its bottom portion than at its upper portion. The technical result of this feature is that one is able to transport the cistern through the wall aperture even with a relatively small height of the wall aperture. In the most preferred embodiments, the cistern needs to be rotated while being transported through the wall aperture. Hence, the lower portion of the cistern, which is inserted first through the wall aperture, may be larger than the more slim upper portion. The slimmer upper portion enters through the wall aperture after some rotation of the cistern, and should hence be slimmer than the bottom portion. As indicated, such design renders a smaller wall aperture possible.

The front panel of the container can advantageously extend in the downwards direction, beyond the position of a bottom panel of the container. The front panel will contribute in providing an enclosure within which the cistern is arranged when in the installed position. In addition, the front panel exhibits a skirt that extends downwards beyond the bottom of the container. As will appearfrom the detailed description of embodiments below, this feature contributes in making the container rest in a steady position on a support frame during installation.

The container, the flush pipe, and at least a portion of the guiding arrangement can advantageously be provided as one single component. Thus, when installing the assembly, the installer will not need to mount the flush pipe separately and providing the watertight interface between the front panel and the flush pipe at the installation site. Advantageously, this interface will be provided at a manufacturing site, preferably with a weld.

Example of embodiment

While some features of the present invention have been described in general terms above, a more detailed and non-limiting example of embodiment will be presented below, with reference to the drawings, in which

Fig. 1 is a perspective view of a concealed toilet cistern assembly according to

the present invention;

Fig. 2 is a transparent perspective view of the assembly shown in Fig. 1; Fig. 3 is a transparent front view of the assembly shown in Fig. 1, however with the front portion of a bathroom wall indicated; Fig. 4 is a transparent side view of the components shown in Fig. 3; Fig. 5 is a perspective view of the assembly according to the invention, illustrated together with the front portion of a bathroom wall; Fig. 6 is a side view of the assembly shown in Fig. 5; Fig. 7 to Fig. 9 are transparent views of a cistern and a guiding arrangement; Fig. 10 is an enlarged side view of an interface between the cistern and a flush pipe; Fig. 11 is a front view of a container support plate; Fig. 12 is a perspective rear view from below, of the assembly according to the invention; Fig. 13 is a principle view of a wall aperture; Fig. 14 is a principle cross section side view of a cistern; Fig. 15 is a principle cross section view through an assembly according to the

invention;

Fig. 16 is a principle cross section view through another assembly according to

the invention; and

Fig. 17 is a principle view of a container aperture.

Fig. 1 shows a concealed toilet cistern assembly 1 according to the present invention. At a front face it has an operating panel 3 in which two push-buttons 5 are arranged. The push-buttons 5 will result in flushing a toilet bowl (not shown) when pushed.

The operating panel 3 protrudes somewhat out from a front panel 7. The front panel 7 constitutes a front wall of a container 9 extending backwards from the front panel 7. The container 9 is fixed to a support frame 11 which has two support legs 13. In this example embodiment, the material of the container 9 is a plastic. The material used is preferably a light, rigid and non-corrosive material. Other materials are however also possible, such as suitable metals.

Fig. 2 depicts the concealed toilet cistern assembly 1 with the same perspective view as Fig. 1, however with a transparent view. Within the container 9 is shown a toilet cistern 15. The toilet cistern 15 is adapted to contain an amount of flushing water, for flushing a toilet bowl (not shown).

On top of the container 9 is a top cover 17 which is provided with upwardly extending attachment flanges 19 on two opposite sides.

Fig. 3 and Fig. 4 illustrate the same concealed toilet cistern assembly 1 as Fig. 1 and Fig. 2, however with a transparent front view and a transparent side view, respectively. In Fig. 3 and Fig. 4, a front portion of a wall 21 is also shown. When the concealed toilet cistern assembly 1 is installed, this front portion of the wall 21 will face the user of the toilet. Typically, it may be covered with tiles or another surface suitable for a bathroom.

In the front panel 7 of the container 9, there is a container aperture 23. Protruding out from the front panel 7, an aperture frame 25 encloses the container aperture 23. The aperture frame 25 can advantageously be of the same or a similar material as the container 9. In this embodiment, the aperture frame 25 is connected to the container front panel 7 with a water tight weld.

In this embodiment, the aperture frame 25 protrudes through a wall aperture 87 in the front portion of the wall 21. Hence, the container aperture 23 is aligned with and has the same shape as the wall aperture 87. Shown in Fig. 13 is a principle drawing of the wall aperture 87, håving a lower rim 69, and an upper rim 71. In the lateral direction, the wall aperture 87 is confined with side edges 73. Moreover, the wall aperture 87 has a height 72 and a width 74.

The operating panel 3 is adapted to be mounted onto the wall aperture 87, in such manner that it covers the wall aperture 87. In this embodiment, shown in Fig. 1 to Fig. 6, the operating panel 3 is attached to aperture frame 25 which protrudes through and beyond the wall aperture 87. Advantageously, the aperture frame 25 is sufficiently thin to be cut by e.g. a knife, so that its outwardly protruding distance can be adapted according to the thickness of the front portion of the wall 21. Such thickness will vary depending on the structure of the wall (e.g. tiles or a thin decorative sheet). When installed, a user will have access to the interior of the container 9 by removing the operating panel 3, through the wall aperture 87 and the container aperture 23.

Notably, the width of the container aperture 23, i.e. the distance between the side edges 73, is larger than the width of the cistern 15. This is because one shall be able to transport the cistern 15 through the container aperture 23. Thus, by removing the operating panel 3, it is possible to remove the cistern 15 without affecting the front portion of the wall 21. Such removal may occur if one wants to repair or replace the cistern 15 of other components, or simply to perform an inspection of the interior of the container 9. Of course, the height of the container aperture 23 is also adapted to the shape of the cistern 15, or vice versa, so that the cistern 15 may pass through.

An additional reason for replacement of the cistern 15 could be for saving water. In such a situation, one would replace the existing cistern 15 with another cistern håving less volume. With the concealed toilet cistern assembly according to the present invention, such replacement could take place without any interference with the bathroom wall.

In this shown embodiment, the lower rim of the container aperture 23 is above the uppermost possible water surface within the cistern 15.

In addition to the front panel 7, which constitutes the front wall of the container 9, the container 9 has a back panel 27, two side panels 29 and a bottom panel 31. The bottom panel 31 is arranged between two inclined lower panels 33 which will transport a possible water leak onto the bottom panel 31.

Fig. 5 and Fig. 6 illustrate the concealed toilet cistern assembly 1 according to this embodiment of the invention in a perspective view and a side view, respectively.

In the lower end of the cistern 15 there is a water outlet 35 through which flushing water will flow upon operation of one of the push buttons 5 on the operating panel 3. The valves and associated components for this function is well known by the persons skilled in the art and will not be discussed herein.

The water outlet 35 has the form of a pipe socket, perhaps best illustrated in Fig. 7, Fig. 8, and Fig. 9. When installing a cistern 15 through the container aperture 23, the water outlet 35 (pipe socket) will enter into an upwardly projecting receiving socket 37 which is fixedly arranged in the lower portion of the container 9.

The receiving socket 37 constitutes one end of a flush pipe 39. The opposite end of the flush pipe 39 is a flush pipe outlet 41. The flush pipe outlet 41 protrudes beyond the front face of the wall 21 and is adapted to be connected to a toilet bowl (not shown). The flush pipe 39 is fixed to the container 9 by means of its interface at the position of the flush pipe outlet 41, in which position it preferably is welded to the front panel 7 in a watertight fashion. Moreover, a flush pipe attachment organ 43 is fixed to the back panel 27 of the container 9, and to the flush pipe 39. This is perhaps best seen in Fig. 4.

As now will be appreciated by the person skilled in the art, water in the cistern 15 can only escape by flowing through the flush pipe 39 and out through the flush pipe outlet 41, which is arranged on the exterior side of the container 9 and also protruding beyond the surface of the wall 21.

If, however, a leak should occurfrom the cistern 15 within the container 9, it would enter a drain 45 in the bottom panel 31. To the drain 45 is connected a drain pipe 47 which is extended downwards and out through the surface of the wall 21. This is shown in Fig. 4. Thus, water within the container 9, be it within the cistern 15 or resulting from a leak from the cistern 15, cannot escape the container 9 without being brought into the room in which the toilet is arranged, and thus becoming visible.

Referring again to Fig. 7, Fig. 8, and Fig. 9, the water outlet 35 is arranged in a bottom 75 of the cistern 15. When the cistern 15 contains water, the water is confined in the cistern 15 with said bottom 75, a front barrier 77, a rear barrier 79 and two side barriers 81. Upwardly confining the water is a top plate 83. As will be understood by the person skilled in the art, an inlet into the cistern 15 will be present, along with a valve mechanism, in order to fill the cistern with water. This is however not shown, since it is not the topic of the present invention.

In this embodiment, the position of the top plate 83 represents the uppermost possible water level within the cistern 15 when filled. In other embodiments, such a filled water level can be at a different level than what is shown herein. In any embodiment, however, there will be such a filled water level. In Fig. 14 is principally depicted, with a cross section side view, a filled water level 85 in a cistern 15, which is at a distance below the top plate 83.

In Fig. 1 and Fig. 2 can be seen a cross bar 49 that extends between the two support legs 13. At each interface of the cross bar 49 and the support legs 13, there is arranged a support flange 51. In each support flange 51 there is provided a drain pipe through bore 53, through which the drain pipe 47 may be extended.

It is again referred to Fig. 7, Fig. 8, and Fig. 9, showing the cistern 15, inter alia, with different views. To ensure that the water outlet 35, in the form of the pipe socket in this embodiment, will align and enter into the receiving socket 37 when lowering the cistern 15 down towards its operating position, a guiding arrangement is arranged. The guiding arrangement comprises guide protrusions 55 that protrude out from respective side faces of the cistern 15. When lowering the cistern 15, the guide protrusions 55 will engage with a guide slots 57. The guide slots 57 are fixed to the interior face of the side panels 29 of the container 9. More precisely, one guide slot 57 is arranged at each side panel 29, within the container 9.

In this shown embodiment, the guide slots 57 has a conical shape, with an open end facing upwards to receive the guide protrusions 55 of the cistern 15. At a lower portion, the guide slots 57 have a narrow guide portion 59 where the faces of the slot are parallel with respect to each other. The guide protrusions 55 will be within the narrow guide portion 59 when the water outlet 35, i.e. the pipe socket, enters the receiving socket 37.

The guide slots 57 may be fixed to the interior face of the side panel 29 for instance by welding or with a glue.

As shown in the drawings of Fig. 7, Fig. 8, and Fig. 9, the cistern 15 is provided with two guide protrusions 55 on each side. In this embodiment, only the two lower guide protrusions 55 will engage with the guide slots 57. In alternative embodiments, however, one may imagine another shape of the guide slots, wherein also the upper guide protrusions will enter into engagement with the guide slot.

In an alternative embodiment, the guiding arrangement may involve guide protrusions that protrude inwards, from the walls of the container, into guide slots arranged in the cistern. Moreover, to facilitate the installation of the cistern, one may provide a funnel shape in the receiving socket 37, which will function as an additional guiding means.

As indicated in Fig. 8, the cistern 15 has a height 82 and a width 84. The height 82 is the distance between the bottom 75 of the cistern 15 and the top portion of the cistern 15. The width 84 is the distance between the respective indicated end points in the shown direction, in this embodiment between the ends of the guide protrusions 55. In Fig. 7 a depth 86 is indicated, which is the distance or dimension of the cistern 15 in the direction orthogonal to the height 82 and the width 84. Fig. 10 is an enlarged cross section side view of a part of the concealed toilet cistern assembly 1, showing the interface between the water outlet 35, the receiving socket 37, the flush pipe 39 and the pipe attachment organ 43 in better detail. Fig. 11 depicts a container support plate 61. As shown in Fig. 2 and Fig. 3, inter alia, the container support plate 61 is fixed to and arranged between the two support legs 13, thus being part of the support frame 11. The support frame 11 is preferably made of a suitable metal. The container support plate 61 can thus advantageously be welded to the support legs 13, or be attached in another suitable manner.

A portion of the upper edge 63 of the container support plate 61 corresponds to the profile of the lower faces of the container, namely the bottom panel 31 and the two inclined lower panels 33. Thus, when attaching the container 9 to the support frame 11, the container 9 may rest on the upper edge of the container support frame 61. Additional attachment means (not shown) are used to attach the container 9 to the support frame 11. Such attachment means may for instance be attachment flanges protruding out from the container 9 body, which may be fastened to the support frame 11 by means of bolts or glue.

In addition to providing support for the container 9, the container support plate 61 is also provided with attachment bores 65 for attachment of the toilet bowl (not shown). In this embodiment, four attachment bores 65 are shown. In Fig. 1 is shown that the attachment bores 65 are aligned with corresponding bores in the front panel 7 of the container 9. Similarly, Fig. 5 depicts bores in the front face of the wall 21 that align with the attachment bores 65.

Preferably, when the container 9 is attached to the support frame 11, the container 9 is produced in one single piece, comprising the flush pipe 39, the receiving socket 37, the pipe attachment organ 43, the aperture frame 25, and the guide slot 57. All these components can preferably be made of the same material or similar materials.

Moreover, the front panel 7 of the container 9 will extend downwards beyond the upper edge 63 of the container support plate 61, as appears from Fig. 1. Thus, when installing the concealed toilet cistern assembly 1 described in this example, it will be possible to install the support frame 11 into the space between two vertical wall beams (not shown) before the container is arranged onto a resting position on the upper edge 63 of the container support plate 61. While resting in such a position, the container 9 may be fixed to the support frame 11.

In the shown embodiment, the front panel 7 is part of the water-tight enclosure of the volume within the container (except from the open aperture in the upper part of the container 9, at the position of the top cover 17). However, one can also imagine embodiments where one container front wall has the function of containment, while another panel is extending beyond the upper edge 63 of the container support plate 61. Fig. 12 is a perspective view of the concealed toilet cistern assembly 1, seen from a lower, rear position. The drain 45 in the bottom panel 31 of the container can be seen. At an upper portion of a side panel 29, a water supply bore 67 is arranged, through which water supply conduits (not shown) may be arranged for water supply to the cistern 15. In Fig. 1, inter alia, a plurality of water supply bores 67 are shown, making it possible to choose alternative access points for delivering water to the cistern 15. For instance, the top cover 17 may be provided with a water supply bore 67. Fig. 15 illustrates, with a principle side view, components of the embodiment described above, including the container 9, cistern 15, and the flush pipe 39. As discussed above, the container 9, along with the aperture frame 25 and the fixed flush pipe 39, can advantageously be manufactured as one single unit. The top cover 17 may in the embodiment shown in Fig. 15 also be a fixed part of the container 9, however it may also be detachable. Fig. 15 is drawn without the front portion of the wall 21 (shown in e.g. Fig. 4). Fig. 16 depicts, in a principle side view, an alternative embodiment of a concealed toilet cistern assembly 101. Components in Fig. 16 that are similar to the components of the embodiment of Fig. 15 are given the same reference numbers, however in the 100-series.

The embodiment shown in Fig. 16 is illustrated with the front portion of the wall 121 present. A major difference from the Fig. 15 embodiment, is that the container 9 does not exhibit a container aperture in its front panel 107. The container aperture 123 is instead arranged facing upwardly at the top rim of the container 9. The container aperture 123 can be closed with the top cover 117.

Moreover, the operating panel 103 is not attached to an aperture frame 25, as in the embodiment of Fig. 15. Rather, the operating panel 103 is releasably attached to the front portion 121 of the wall and covering a wall aperture 187 in the wall. Corresponding to the previously described embodiment, the operating panel 103 comprises two push buttons 105 for operating the flushing function of the cistern 115. The operating panel 103 and its push buttons 105 are merely principally depicted, as their mechanical function is not the issue of this presentation and is considered to be within the knowledge of the skilled person.

When installing or replacing the cistern 115 in the embodiment shown in Fig. 16, the operating panel 103 is removed from its attached position on the wall 21, in which position it covers the wall aperture 187. Moreover, the top cover 117 is removed from the top of the container 109. The cistern 115 can then be transported through the wall aperture 187 into and out from the installed position within the container 109, through the container aperture 123. The top cover 117 is not strictly necessary, however it is preferred since it may prevent condensation of water from the cistern 115 outside the container 109.

For illustrational purpose, Fig. 15 and Fig. 16 do not show the support frame 11 which may be used to fix the container 9, 109.

Fig. 17 is a principle view of the container aperture 23, 123 of the embodiment shown in Fig. 15 and or the embodiment shown in Fig. 16. The container aperture 23, 123 has a container aperture height 22, 122 and a container aperture width 24, 124. Indeed, the container aperture 123 shown in Fig. 16 extends along a horizontal plane, hence the term height should perhaps rather be the term depth. However, also for this embodiment (Fig. 16) the term container aperture height is used. Common for the embodiments discussed above, is that the container aperture width 24, 124 is larger than the with 84 of the cistern 15, 115. Moreover, the container aperture height 22, 122 is smaller than the height 82 of the cistern 15, 115, however larger than the depth 86 of the cistern.

Claims

1. A concealed toilet cistern assembly (1, 101), comprising a cistern (15, 115) which has a water outlet (35) and which is arranged inside a container (9, 109), the container (9, 109) is arranged behind a bathroom wall surface (21, 121) and has a front panel (7, 107) thatfaces the bathroom wall surface (21, 121),characterized inthat a flush pipe (39, 139) extends from the water outlet (35,135) inside the container (9, 109), through the front panel (7, 107).

2. A concealed toilet cistern assembly (1, 101) according to claim 1,characterizedin that the bathroom wall surface (21, 121) has a wall aperture (87, 187) - which has a wall aperture width (74) which is larger than the cistern width (84); - which has a wall aperture height (72) which is smaller than the cistern height (82) and larger than the cistern depth (86).

3. A concealed toilet cistern assembly (1, 101) according to claim 1 or claim 2,characterized in thatthe wall aperture (87, 187) is covered by an operating panel (3, 103) which comprises push buttons (5, 105) adapted for flushing.

4. A concealed toilet cistern assembly (1, 101) according to one of the preceding claims,characterized in thatthe container (9, 109) comprises a container aperture (23, 123) håving an area through which the cistern (15, 115) is able to pass, and that the flush pipe (39, 139) extends through said front panel (7, 107) in a position below the container aperture (23, 123).

5. A concealed toilet cistern assembly (1, 101) according to one of the preceding claims,characterized in thatthe container (9, 109) has a container aperture (23, 123) - which has a container aperture width (24,124) which is larger than the cistern width (84); and - which has a container aperture height (22, 122) which is smaller than the cistern height (82) and larger than the cistern depth (86).

6. A concealed toilet cistern assembly (1, 101) according to claim 2 and any one of claims 3 to 5,characterized in thatwhen the cistern (15, 115) is in the installed position within the container (9, 109), more than half of its dimension corresponding to its height (82) is below the lower rim (69) of the wall aperture (87, 187).

7. A concealed toilet cistern assembly (1, 101) according to claim 4 and any one of claims 5 to 6,characterized in thatthe container aperture (23) is an aperture in the front panel (7) of the container (9) and coinciding with the wall aperture (87).

8. A concealed toilet cistern assembly (1, 101) according to one of the preceding claims,characterized in thatit comprises a guiding arrangement adapted to guide the cistern (15, 115) downwards within the container (9, 109), wherein the guiding arrangement comprises guide protrusions (55) and guide slots (57).

9. A concealed toilet cistern assembly (1, 101) according to one of the preceding claims,characterized in thata flush pipe attachment organ (43) extends between an inner surface of a container panel (7, 27, 29, 31, 33) and the flush pipe (39, 139), wherein its engagement with the flush pipe (39, 139) is at a distance from the front panel (7, 107).

10. A concealed toilet cistern assembly (1, 101) according to one of the preceding claims,characterized in thatthe depth (86) of the cistern (15,115) is larger at its bottom portion than at its upper portion.

11. A concealed toilet cistern assembly (1, 101) according to one of the preceding claims,characterized in thatthe front panel (7, 107) of the container (9, 109) extends in the downwards direction beyond the position of a bottom panel (31, 131) of the container (9, 109).

12. A concealed toilet cistern assembly (1, 101) according to one of the preceding claims,characterized in thatthe container (9, 109), the flush pipe (39, 139), and at least a portion of the guiding arrangement (57) is provided as one single component.