AU2018326081A1

AU2018326081A1 - Flush valve assembly

Info

Publication number: AU2018326081A1
Application number: AU2018326081A
Authority: AU
Inventors: Alfred Mahler
Original assignee: Geberit International AG
Current assignee: Geberit International AG
Priority date: 2017-08-31
Filing date: 2018-07-13
Publication date: 2020-02-27
Anticipated expiration: 2038-07-13
Also published as: SI3676460T1; PL3676460T3; CN111032973B; AU2018326081B2; ES2906443T3; EP3676460B1; CN111032973A; WO2019042648A1; EP3676460A1

Abstract

The invention relates to a flush valve assembly (1) for controlling the removal of water from a cistern (29), comprising a flush valve (2) comprising a housing (3) with a lower end (4) and an upper end (5) and a valve element (6) which is mounted in the housing (2) in a movable manner along a central axis (M), a flush valve mounting (7) with a receiving section (8) for receiving the lower end (4) of the flush valve (2) and with a mounting section (9) for connecting the flush valve mounting (7) to a drain opening (31) of a cistern (29), and a hold-down unit (10). Additionally, the hold-down unit (10) comprises a first hold-down mounting (12) with a working section (11) which acts on the flush valve (2) and a second hold-down mounting (14) with a working section (13) which acts on the flush valve mounting (7).

Description

TITLE

FLUSH VALVE ASSEMBLY

TECHNICAL FIELD

The present invention relates to a flush valve assembly for controlling the removal of water from a cistern according to the preamble of claim 1.

PRIOR ART

Flush valve assemblies for controlling the removal of water from a cistern have become known from the prior art.

Over time, cisterns have become increasingly more compact, which has made it necessary to make modifications to the flush valves. In particular, the flush valves have been modified for simple installation in the cistern.

The more compact design of cisterns has the disadvantage that the flush valves are not entirely accessible for the installer in the installed state. That is to say, during installation or in the event of maintenance, the installer cannot reach all regions of the cistern with his hand. Consequently, parts of the flush valve cannot be removed from the cistem again, or can only be removed again with difficulty.

DESCRIPTION OF THE INVENTION

Starting from that problem, one object underlying the invention is to provide a flush valve assembly which overcomes the disadvantages of the prior art. In particular, the flush valve assembly is to be so configured that it can easily be installed in the cistem and removed from the cistern again.

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This object is achieved by the subject-matter of claim 1. Accordingly, a flush valve assembly comprises a flush valve comprising a housing with a lower end and an upper end, and a valve body which is movably mounted in the housing along a central axis, a flush valve mounting with a receiving portion for receiving the lower end of the flush valve and a mounting portion for connecting the flush valve mounting to a drain opening of a cistem, and a holding-down unit. By means of the holding-down unit, the flush valve is held in the interior of the cistern, in particular against a lifting force. The holding-down unit comprises a first holding-down element which acts with an effective portion on the housing of the flush valve and a second holding-down element which acts with an effective portion on the flush valve mounting.

Forming the two holding-down elements separately has the advantage that the flush valve can be installed in or removed from the cistem separately from the flush valve mounting, respectively.

Furthermore, installation becomes easier because first the flush valve mounting and subsequently the flush valve can be inserted into the cistern. This is an advantage specifically in the case of the cramped space conditions in the cistern.

Furthermore, in the event of maintenance it is possible to remove only the flush valve, for example, while the flush valve mounting remains in the cistern. Typically, there is a seal between the flush valve mounting and the drain opening. In this respect, the separation has the advantage that the flush valve mounting remains in the cistern during a replacement or inspection of the flush valve, so that the seal is not stressed. Such stresses adversely affect the sealing action.

The two holding-down elements are formed separately from one another and can be connected together at a connection point. This connection is such that it can be released in the event of maintenance, so that the flush valve can be removed while the flush valve mounting remains in the cistem. Furthermore, at least one of the two holding-down elements can be connected to the cistern. This connection is such that it can be released in the event of maintenance, so that the flush valve mounting and the flush valve can be removed.

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Preferably, the two holding-down elements can be connected together via a connection point. The connection point is preferably arranged at an easily accessible location, so that the installer has good access to the connection point. The connection point is preferably such that it can be releasably connected to the cistem.

Preferably, the connection point, when seen along the central axis, is located closer to the upper end of the housing than to the flush valve mounting. Alternatively, the connection point is located above the upper end of the housing. This arrangement has the advantage that the connection point can be arranged close to a maintenance opening in the cistem. That is to say, the connection point is easily accessible through the maintenance opening. The maintenance opening is the opening which is typically located behind an actuator plate.

Preferably, the effective portions of the holding-down elements act on the flush valve and the flush valve mounting as close as possible to the mounting portion of the flush valve mounting, in particular in the region of the receiving portion. That is to say, the force effect takes place as close as possible to the point at which the flush valve mounting is connected to the cistern. Transverse forces on the flush valve mounting and the flush valve can thus largely be avoided. As a result, the flush valve is not pushed away sideways. In addition, the guide lengths between the flush valve mounting and the drain opening and between the flush valve mounting and the flush valve can be made smaller.

Preferably, the connection point between the two holding-down elements is provided by a snap connection between the first holding-down element and the second holding-down element.

The elements which provide the snap connection are fixedly formed on the respective holding-down element. The snap connection is preferably a direct connection between the two holding-down elements. That is to say, no further elements are present between the two holding-down elements.

Particularly preferably, the snap connection comprises flexible catches and a receiver. The

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PCT/EP2018/069121 catches engage into the receiver, which is preferably formed in a rigid manner. The flexible catches are preferably arranged on the first holding-down element and the receiver is preferably arranged on the second holding-down element.

Preferably, the holding-down elements extend substantially in a rod-like manner, in particular with a rectangular cross-section, in the direction of the central axis. The connection point is preferably positioned at the free ends of the holding-down elements. The free ends are located opposite the effective portions.

That is to say, the holding-down elements are pulled by the rod-like portions along the housing from bottom to top, which, as mentioned, is advantageous for accessibility.

The holding-down elements are preferably spring-mounted. That is to say, the holdingdown elements can be moved in slightly resilient manner towards the housing and away from the housing.

Preferably, the two holding-down elements extend substantially parallel to one another, wherein the first holding-down element is located closer to the housing than is the second holding-down element. Preferably, the two holding-down elements are located close to the housing, which is advantageous for the compactness of the assembly.

Preferably, at least one of the holding-down elements, in particular the second holdingdown element, comprises a latching structure with which the holding-down element can be connected to a cistem, wherein the latching structure is preferably located closer to the connection point than to the flush valve mounting or wherein the latching structure is located in the region of the free end of the holding-down element or wherein the latching structure is located at the level of the connection point.

Via the latching structure, said holding-down element, in particular the second holdingdown element, is connected to the cistem, while the other holding-down element, in particular the first holding-down element, is connected to said holding-down element, in particular the second holding-down element, preferably via the connection point.

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Arranging the latching structure in the region of the connection point has the advantage that the latching structure is likewise easily accessible.

Preferably, at least one of the holding-down elements, in particular the second holdingdown element, comprises a compensating element between the effective portion and the connection point, with which position tolerances relative to the cistem can be compensated for. The compensating element is preferably arranged in the region of the rod-like portion and ensures that the rod-like portion is able to compensate for angle errors.

Preferably, the effective portion of the second holding-down element and the counter piece on the flush valve mounting are formed as a mechanical connection, in particular as a latching connection. The connection is such that the second holding-down element is able to form a fixed connection with the flush valve mounting. That is to say, the second holding-down element can be fixedly connected via the mechanical connection, or the latching connection, respectively, to the flush valve mounting. The flush valve mounting can thus be inserted into the cistern with the holding-down element. The installer can grasp the unit consisting of the holding-down element and the flush valve mounting at the holding-down element and then insert the flush valve mounting into the drain opening through the maintenance opening.

In another embodiment, it is additionally conceivable that the effective region of the second holding-down element is formed in one piece on the flush valve mounting. The same advantages are thus obtained as in the case of the latching connection.

Preferably, the relative arrangement between the second holding-down element and the flush valve mounting is such that a force in the direction of the central axis can be applied uniformly to the flush valve mounting, or that a force in the direction of the central axis can be applied to the flush valve mounting at two locations which are substantially opposite one another with respect to the central axis, respectively. The flush valve mounting can thus be prevented from canting as it is inserted into the drain opening.

Preferably, the connection between the second holding-down element and the flush valve mounting permits an angular relative movement between the holding-down element and

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PCT/EP2018/069121 the flush valve mounting. Canting during fitting can thus be avoided.

With regard to the latching connection, it is particularly preferred that two latching connections located substantially opposite one another with respect to the central axis are arranged.

Preferably, the latching connection comprises a latching opening and a latching lug which protrudes into the latching opening.

Preferably, the effective portion of the first holding-down element comprises at least one spring portion which acts on an edge region of the housing. As a result of the spring-loaded form, forces which can occur during flushing can advantageously be introduced into the holding-down element.

Preferably, the spring portion is in the form of a leaf spring.

Preferably, the edge region of the housing is a web which protrudes from the housing and the upper side of which is in contact with the holding-down element and the lower side of which rests on the flush valve mounting, wherein the web is preferably 5 millimeters thick between the lower side and the upper side. Introduction of the force in the region of the lower end can thus be achieved.

Preferably, the first holding-down element is movably mounted on the outer side of the housing in a longitudinal guide. The longitudinal guide is oriented in the direction of the central axis.

A cistern assembly comprises a cistern with a drain opening and a receiver, to which one of the holding-down elements can be connected, and a flush valve valve assembly according to the above description. The flush valve mounting is thereby mounted in the drain opening. Preferably, the second holding-down element is connected to the cistern by means of its latching structure.

A method for installing a flush valve assembly according to the above description is

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PCT/EP2018/069121 characterized in that in a first step, the flush valve mounting is installed with the second holding-down element in the cistern;

in a subsequent step, the flush valve is installed with the first holding-down element in the receiver of the flush valve mounting;

in a subsequent optional step, the two holding-down elements are connected together at the connection point; and in a subsequent optional step, at least one of the holding-down elements is connected to the cistern.

Further embodiments are described in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention are described hereinbelow with reference to the drawings, which serve merely for explanation and are not to be interpreted as being limiting. In the drawings:

Fig. 1 shows a perspective view of a flush valve assembly with a holding-down unit;

Fig. 2 shows an exploded view of the flush valve assembly according to Figure 1 together with parts of a cistern, which is shown in a sectional view;

Fig. 3 shows a front view of Figure 1;

Fig. 4 shows a side view of Figure 1;

Fig. 5 shows a further front view of Figure 1, wherein not all parts of the holdingdown unit are shown;

Fig. 6 shows a side view of Figure 5; and

Fig. 7 shows a detailed view of the flush valve assembly according to Figure 1.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the figures, a flush valve assembly 1 for controlling the removal of water from a cistern 29 is shown. The flush valve assembly 1 comprises substantially a flush valve 2, a flush

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PCT/EP2018/069121 valve mounting 7 and a holding-down unit 10.

The flush valve 2 comprises substantially a housing 3 with a lower end 4 and an upper end 5 and a valve body 6 which is movably mounted in the housing 2 along a central axis M. The valve body 6 can thereby be moved from a closed position, in which water cannot be removed from the cistern, into a flushing position, in which water is able to flow out of the cistern 29.

The flush valve mounting 7 serves to hold, or mount, respectively, the flush valve 2 in the cistern 29. The flush valve mounting 7 comprises a receiving portion 8 for receiving the lower end 4 of the flush valve 2. In the embodiment shown, the lower end 4 and the receiving portion 8 are each in cylindrical form and the lower end 4 can be inserted into the receiving portion 8. The flush valve mounting 7 further comprises a mounting portion 9 for connecting the flush valve mounting 7 to a drain opening 31. The mounting portion 9 projects into the drain opening 31. The drain opening 31 is part of the cistern 29, as is shown in Figure 2.

When the cistem 29 is filled with water, the flush valve 2 experiences lift in the water. The holding-down unit 10, which holds the flush valve 2 and the flush valve mounting 7 in the correct position against the lifting force, acts against this lifting force. The holding-down unit 10 comprises a first holding-down element 12 and a second holding-down element 14. The first holding-down element 12 acts with an effective portion 11 on the flush valve 2, and the second holding-down element 14 acts with an effective portion 13 on the flush valve mounting 7. Via the two effective portions 11, 13, the flush valve 2, or the flush valve mounting 7, respectively, is held in its installation position. In the embodiment shown, the holding-down unit 10 is further connected to the cistem 29.

In the embodiment shown, the two holding-down elements 12, 14 can be connected together at a connection point 15. The connection is in separable form. In Figures 1, 3 and 4, the two holding-down elements 12, 14 are connected together at the connection point 15. In Figures 2, 5 and 6, the holding-down elements 12, 14 are separate from one another.

The connection point 15, as is shown in Figure 1, is arranged, when seen along the central

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PCT/EP2018/069121 axis M, above the upper end 5 of the housing 3. This has the advantage that the connection point 15 in the installed state is easily accessible through a maintenance opening, not shown specifically in the figures, in the cistem. In Figure 1, the approximate position of the maintenance opening is shown schematically by an ellipse 32. The maintenance opening in a cistern is typically located above the maximum fill level of the cistern 29. However, in other embodiments, not shown, the connection point can also be located beneath the upper end 5 of the housing 3. It is advantageous, however, that the connection point 15, when seen along the central axis M, is located closer to the upper end 5 of the housing 3 than to the flush valve mounting 7, or that the connection point 15, when seen along the central axis M, when seen from the lower end 4, is located as far away from the lower end 4 as possible, respectively.

The effective portions 11, 13 of the holding-down elements 12, 14 act on the flush valve 2 and the flush valve mounting 7 as close as possible to the mounting portion 9, in particular in the region of the receiving portion 8. That is to say, the effective portions 11, 13 act on the flush valve 2 and the flush valve mounting 7 as close as possible to the drain opening 31. This has the advantage that, during installation or during operation, respectively, the forces act as far as possible in the region of the corresponding guides.

For the first holding-down element 12 with its effective portion 11, this action means that the effective portion acts on the flush valve 2 slightly above the connection point between the lower end 4 and the receiving portion 8. The region of action is provided with reference numeral 12' in Figure 2 and 7. As a result of this force action, the guide length between the lower end 4 and the receiving portion 8 can be made comparatively short, so that the flush valve 2 can be in comparatively compact form. In addition, the force action is optimal, because canting between the flush valve 2 and the flush valve mounting 7 can be avoided.

With regard to the second holding-down element 14 and its effective portion 13, which acts on the flush valve mounting 7, the point of action is likewise arranged in the region of the receiver 30. The region of action is provided with reference numeral 14' in Figure 2. Here too, canting between the mounting portion 9 and the drain opening 31 is prevented.

In Figure 2, the flush valve assembly 1 is shown in conjunction with the cistern 29. The

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PCT/EP2018/069121 cistern 29 is shown only in part. In Figure 2, the flush valve mounting 7 is inserted with its mounting portion 9 in the drain opening 31 of the cistern 29. The second holding-down element 14 acts with its effective portion 13 on the flush valve mounting 7. Furthermore, the second holding-down element 14 is connected via a latching structure 19 to the cistem 29. The latching structure 19 is arranged at the free end 18 of the second holding-down element 14 and engages into a receiver 30 which is formed on or attached to the cistem 29. A latching connection is provided between the latching structure 19 and the receiver 30.

The second holding-down element 14 further has a compensating element 21 between the effective portion 13 and the connection point. The compensating element 21 serves to compensate for position tolerances relative to the cistem 29. For example, the compensating element 21 can compensate for an angle error. In addition, the compensating element 21 acts slightly resiliently in the direction of the central axis M. Furthermore, the compensating element 21 can act as a support with the wall 20 of the cistem 29. For that purpose, the compensating element 21 in the embodiment shown comprises two support points 37.

In the embodiment shown, the first holding-down element 12 is movably mounted on the outside of the housing 3 in a longitudinal guide 27. The longitudinal guide 27 is located close to the point at which the effective portion 11 acts on the housing 3. The effect of mounting in the longitudinal guide 27 is that the first holding-down element 12 forms a unit with the flush valve 2, which unit is then jointly inserted into the cistern. Starting from Figure 2, the flush valve 2 can then be inserted together with the first holding-down element 12 through the maintenance opening into the cistern. The lower end 4 is thereby pushed into the receiving portion 8 of the flush valve mounting 7. The housing 3 rests with an edge region 25 on the flush valve mounting 7. After the flush valve 2 has been positioned, the two holding-down elements 12, 14 can be connected together at the connection point 15. This connection is shown in Figure 1.

The second holding-down element 14, as already mentioned, is connected to the cistern 29, and the first holding-down element 12 is connected via the connection point 15 to the second holding-down element 14. The first holding-down element 12 is thus connected indirectly to the cistern 29 via the second holding-down element 14.

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In Figure 3, a further view of the flush valve assembly 1 is shown. It is readily apparent from Figure 3 that the two holding-down elements 12, 14 are substantially in rod form and extend upwards along the central axis M from the contact point, at which the effective portions 11, 13 act on the corresponding elements. The rod-like portions have a rectangular cross-section and bear reference numeral 40. In the embodiment shown, the rod-like portions 40 further comprise reinforcing ribs 41, which increases the compressive rigidity of the rod-like portion 40.

The holding-down elements 12, 14 are additionally slightly resilient, so that a type of bending movement in the direction indicated by the arrow B is possible. As a result of this bending movement, tolerance compensation relative to the cistern 29 can be achieved.

It is likewise readily apparent from Figure 3 that the two holding-down elements 12, 14 extend substantially parallel to one another. The first holding-down element 12 is thereby located closer to the housing 3 than is the second holding-down element 14. As a result of this arrangement, a compact structure can be obtained.

As is shown in the figures, in particular in Figures 1-3, the connection point 15 is provided by a snap connection. The snap connection between the first holding-down element 12 and the second holding-down element 14 is such that the two holding-down elements 12, 14 can be snapped together. The connection is releasable. In the embodiment shown, the snap connection comprises two flexible catches 16 which are arranged at the free end 17 of the first holding-down element 12. The snap connection further comprises a receiver 38 which is arranged at the free end 18 of the second holding-down element 14. The catches 16 engage into the receiver 38. The receiver 38 is preferably rigid. Behind the receiver 38 the second holding-down element 14 then comprises the latching elements 19, with which the second holding-down element 14, as mentioned above, can engage into the receiver 30 of the cistem 29.

Preferably, the catches 16 have grooves 39 on the outside which indicate to the user that the catches 16 are to be grasped in order to separate the connection between the two holding-down elements 12, 14.

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The action of the effective portion 13 of the second holding-down element 14 on the flush valve mounting 7 will now be explained with reference to Figures 1 to 4 and 7. The effective portion 13 of the second holding-down element 14 and the counter piece on the flush mounting 7 are formed as a mechanical connection, in particular as a latching connection 22, 23. The mechanical connection is such that the second holding-down element 14 can form a fixed connection with the flush valve mounting 7. As a result, when the flush valve mounting 7 is inserted into the drain opening 31, the second holding-down element 14 can serve as an installation aid. The installer can grasp the free end 18 of the second holding-down element 14 and thus insert the flush valve mounting 7 into the drain opening 31.

The relative arrangement between the second holding-down element 14 and the flush valve holder 7 is such that a force F in the direction of the central axis M can be applied uniformly to the flush valve mounting 7. Canting of the flush valve mounting 7 as it is inserted into the drain opening 31 can thus be prevented. In the embodiment shown, two latching connections 22, 23 located substantially opposite one another with respect to the central axis M are arranged. That is to say, uniform distribution of the force is achieved. In the embodiment shown, the latching connections 22, 23 comprise a latching opening 23 and a latching lug 22 which protrudes into the latching opening 23. The latching opening 23 is formed on the flush valve mounting 7 on the outside at the level of the receiving portion 8, while the latching lug 22 protrudes from the second holding-down element 14. In the embodiment shown, the latching lug 22 protrudes from a traverse 33, which extends laterally from the rod-like portion of the second holding-down element 14.

Preferably, the connection between the second holding-down element 14 and the second flush valve mounting 7 is such that an angular relative movement between the holdingdown element 14 and the flush valve mounting 7 is made possible. For this purpose, the latching opening 23 in the embodiment shown comprises a surface 34 which is inclined at an angle relative to the central axis M. When pressure is exerted in the direction of the force F, the traverse 33 is able to move against the surface 34. An angle error can thereby be compensated for. The surface inclined at an angle can be seen particularly clearly in Figure 3.

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With reference to Figures 5 to 7, the action of the effective portion 11 of the first holdingdown element 12 on the flush valve 2 will now be described in greater detail. The effective portion 11 of the first holding-down element 12 comprises at least one spring portion 24 which acts on an edge region 25 of the housing 3. In the embodiment shown, two spring portions 24 are present, which extend laterally away from the first holding-down element 12 and act on the edge region 25 of the housing 3 at two locations which are spaced apart. As a result of the spring-mounted form, tensile forces which act on the flush valve 2 can be compensated for. In the embodiment shown, the spring portion 24 is in the form of a leaf spring. In the embodiment shown, the edge region 25 of the housing 3 is a web which protrudes from the housing 3 and the upper side 26 of which comes into contact with the holding-down element 12, or with the effective portion 11, respectively. The lower side of the web rests on the flush valve mounting 7. The web has a small thickness and is preferably less than 5 millimeters thick. That is to say, the action of the force via the effective portion 11 is as close as possible to the flush valve mounting 7.

In the embodiment shown, the flush valve mounting 7 comprises a passage region 35 beneath the receiving portion 8, through which passage region water can be fed to the drain opening 31. The passage region 35 connects the receiving portion 8 to the mounting portion 9. Furthermore, a seal 36 is arranged on the outside in the region of the mounting portion 9. The seal 36 seals the gap between the drain opening 31 and the outer side 28 of the mounting portion 9.

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LIST OF REFERENCE SIGNS

1	flush valve assembly	28	outer side
2	flush valve	29	cistern
3	housing	30	receiver
4	lower end	31	drain opening
5	upper end	32	maintenance opening
6	valve body	33	traverse
7	flush valve mounting	34	surface
8	receiving portion	35	passage region
9	mounting portion	36	seal
10	holding-down unit	37	support point
11	effective portion	38	receiver
12	first holding-down element	39	grooves
12‘	region of action	40	rod-like portion
13	effective portion	M	central axis
14	second holding-down element	F	force
14‘	region of action	B	arrow
15	connection point
16	catch
17	free end
18	free end
19	latching structure
20	wall
21	compensating element
22	latching lug
23	latching opening
24	spring portion
25	edge region
26	upper side
27	longitudinal guide

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Claims

PATENT CLAIMS

1. A flush valve assembly (1) for controlling the removal of water from a cistem (29), comprising a flush valve (2) comprising a housing (3) with a lower end (4) and an upper end (5) and a valve body (6) which is movably mounted in the housing (2) along a central axis (M), a flush valve mounting (7) with a receiving portion (8) for receiving the lower end (4) of the flush valve (2) and a mounting portion (9) for connecting the flush valve mounting (7) to a drain opening (31) of a cistem (29), and a holding-down unit (10), characterized in that the holding-down unit (10) comprises a first holding-down element (12) which acts with an effective portion (11) on the housing (3) of the flush valve (2) and a second holding-down element (14) which acts with an effective portion (13) on the flush valve mounting (7).
2. The flush valve assembly (1) as claimed in claim 1, characterized in that the two holding-down elements (12, 14) are formed separately from one another and can be connected together at a connection point (15), wherein the flush valve can be removed when the connection is released; and in that at least one of the two holding-down elements (12, 14) can be connected to the cistern, wherein the flush valve and the flush valve mounting can be removed when the connection is released.
3. The flush valve assembly (1) as claimed in claim 1 or 2, characterized in that the two holding-down elements (12, 14) can be connected together at a connection point (15), wherein the connection point (15), when seen along the central axis (M), is located closer to the upper end (5) of the housing (3) than to the flush valve mounting (7); or wherein the connection point (15) is located above the upper end (5) of the housing (3).

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4. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that the effective portions (11, 13) of the holding-down elements (12, 14) act on the flush valve (2) and the flush valve mounting (7) as close as possible to the mounting portion (9), in particular in the region of the receiving portion (8).
5. The flush valve assembly (1) as claimed in one of the preceding claims 2 to 4, characterized in that the connection point (15) is provided by a snap connection between the first holding-down element (12) and the second holding-down element (14).
6. The flush valve assembly (1) as claimed in claim 5, characterized in that the snap connection comprises flexible catches (16) and a receiver (38), which catches (16) engage into the receiver (38), which is preferably rigid, wherein the flexible catches (16) are preferably arranged on the first holding-down element (12) and the receiver is preferably arranged on the second holding-down element (14).
7. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that the holding-down elements (12, 14) substantially extend in a rod-like manner, in particular with a rectangular cross-section, in the direction of the central axis (M), wherein the connection point (15) is preferably positioned at the free ends (17, 18) of the holding-down elements (12, 14), which free ends (17, 18) are located opposite the effective portions (11, 13).
8. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that the two holding-down elements (12, 14) extend substantially parallel to one another, wherein the first holding-down element (12) is located closer to the housing (3) than is the second holding-down element (14).
9. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that at least one of the holding-down elements (12, 14), in particular the second holding-down element (14), comprises a latching structure (19) with which the holding-down element (12, 14) can be connected to a cistern (29), wherein the latching structure (19) is preferably located closer to the connection point (15) than to the flush valve mounting (7) or wherein the latching structure (19) is located in the region of the free

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PCT/EP2018/069121 end (17, 18) of the holding-down element (12, 14) or wherein the latching structure (19) is located at the level of the connection point.
10. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that at least one of the holding-down elements (12, 14), in particular the second holding-down element (14), comprises between the effective portion (11, 13) and the connection point (15) a compensating element (21), with which compensating element position tolerances relative to the cistem (29) can be compensated for.
11. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that the effective portion (13) of the second holding-down element (14) and the counter piece on the flush valve mounting (7) are in the form of a mechanical connection, in particular in the form of a latching connection (22, 23), such that the second holding-down element (14) is able to form a fixed connection with the flush valve mounting (7); or in that the effective region of the second holding-down element (14) is formed in one piece on the flush valve mounting (7).
12. The flush valve assembly (1) as claimed in claim 11, characterized in that the relative arrangement between the second holding-down element (14) and the flush valve mounting (7) is such that a force (F) in the direction of the central axis (M) can be applied uniformly to the flush valve mounting (7); and/or that the connection between the second holding-down element (14) and the flush valve mounting (7) permits an angular relative movement between the holding-down element (14) and the flush valve mounting (7); and/or that two latching connections (22, 23) located substantially opposite one another with respect to the central axis (M) are arranged; and/or that the latching connection (22, 23) comprises a latching opening (23) and a latching lug (22) which protrudes into the latching opening (23).
13. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that the effective portion (11) of the first holding-down element (12) comprises at least one spring portion (24) which acts on an edge region (25) of the housing (3).

WO 2019/042648

PCT/EP2018/069121
14. The flush valve assembly (1) as claimed in claim 13, characterized in that the spring portion (24) is in the form of a leaf spring; and/or that the edge region (25) of the housing (3) is a web which protrudes from the housing (3) and the upper side (26) of which is in contact with the holding-down element (12) and the lower side of which rests on the flush valve mounting (7), wherein the web between the lower side and the upper side is not more than 5 millimeters thick.
15. The flush valve assembly (1) as claimed in one of the preceding claims, characterized in that the first holding-down element (12) is movably mounted in a longitudinal guide (27) on the outer side (28) of the housing (3).
16. A cistern assembly comprising a flush valve assembly as claimed in one of the preceding claims and a cistern (29) with a drain opening (31) and a receiver (30) to which one of the holding-down elements (12, 14) can be connected.
17. A method for installing a flush valve assembly as claimed in one of the preceding claims 1 to 15, characterized in that in a first step, the flush valve mounting is installed with the second holding-down element in the cistem;

that in a subsequent step, the flush valve is installed with the first holding-down element in the receiver of the flush valve mounting;

that in a subsequent optional step, the two holding-down elements are connected together at the connection point; and that in a subsequent optional step, at least one of the holding-down elements is connected to the cistern.