DK2336433T3 - Activation device for a cistern drain set, cistern with such an actuating device and method of mounting such an actuation device of a cistern - Google Patents

Description

The invention relates to an actuating device according to the preamble of claim 1. DE-U-295 10 495 discloses an actuating device of the generic kind. In order to fix this on the cistern a fastening screw is provided which is screwed into a screw fastening of a cistern mechanism. EP-A-0 209 478 discloses an actuating device with a push-button housing which for fixing can be fitted onto a detent ring which is arranged on the underneath of the cistern lid and projects into an opening of the cistern lid. FR-2 819 835 discloses an actuating device which has a push-button housing which has a downwardly projecting threaded attachment which for fastening the push-button housing is screwed into a yoke of the cistern mechanism. US-B-6,425,145 discloses a push-button with an integrated diaphragm valve which has a housing which bears against the underneath with a flange, by way of example on a cistern lid. A further actuating device has been known in the prior art from EP-A-1 995 386. With this the push-button housing is fastened on a cistern lid by a nut. The nut is screwed onto a part of the push-button housing projecting on the underneath of the cistern lid and in the assembled state bears against the underneath side of the cistern lid. The actuating device can be raised from the outlet fitting with the cistern lid. A further actuating device is furthermore known from EP-A-0 479 714 of the applicant. With this the push-button housing is likewise fastened in an opening of the cistern lid by means of a nut. This actuating device can also be raised from the outlet fitting with the cistern lid. The two said actuating devices are particularly suitable for cisterns made of ceramic.

The object of the invention is to provide an actuating device of the said kind which can be fitted even more easily.

This is achieved according to Claim 1. With the actuating device according to the invention the tension member is thus inserted with the housing into the opening of the cistern. Subsequently attaching a fastening nut is thus unnecessary. The tension member and the push-button housing can be formed as one unit and inserted into the said opening. The push-button housing is automatically fixed by the tension member by bracing against the wall of the cistern. In order to fasten the push-button housing this therefore need only be inserted from above into the said opening. Subsequently screwing up a nut is not necessary. Assembly is thereby considerably simplified and can also be carried out without any tools.

It is further proposed that the tension member is mounted displaceably in the push-button housing. It is thereby possible in particular to loosen the tension member again through displacement so that the push-button housing can be removed again from the opening. To release the tension member it is proposed in particular that the tension member is moved downwards in the push-button housing. The movement is more particularly made against a counteractive force, by way of example against a spring element.

It is further proposed that the tension member has at least one expanding arm or spring arm with which the push-button housing can be locked in the opening of the cistern housing. When inserting the push-button housing, this at least one expanding arm or spring arm is first deflected inwards and then changes preferably spring elastically into the expanded position in which the push-button housing is anchored against the said wall. Preferably at least two such expanding arms are provided. Obviously more than two such expanding arms can also be provided. These are first moved radially inwards and then radially outwards during insertion of the push-button housing.

According to a further embodiment of the invention, it is proposed that at least one presser rod is mounted in the push-button housing and can be moved downwards with the push-button for flushing. This presser rod is mounted with restricted displacement in the push-button housing. This presser rod is in engagement with the outlet fitting at a lower end. The presser rod bears against the push-button at the upper end. Two such presser rods are preferably mounted in the push-button housing. One of these presser rods serves to release a partial flush and the other presser rod serves to release a full flush.

The at least one presser rod is preferably provided with rotary detent means. These rotary detent means allow the presser rod to be fixed in a set position through a rotation about its longitudinal axis. For release, the presser rod can be turned about its longitudinal axis in the reversed rotational direction. Rotary detent means of this type are known per se.

According to a further development of the invention, it is proposed that the pushbutton housing is formed substantially pot-like and has on an upper edge an outwardly protruding flange which can be braced with the tension member against an outer side of the said wall of the cistern. This enables a particularly suitable fixing of the push-button housing in the said opening. The push-button is pressed against the said outer side through the tensioning force of the tension member. The push-button housing thereby remains permanently fixed.

The invention further relates to a cistern with an actuating device of this kind. The actuating device is mounted more particularly in a lid of the cistern. The cistern is by way of example a ceramic cistern.

When fitting the actuating device, the push-button housing is inserted with the tension member from above into the opening of the cistern housing and is fixed in this opening by the tension member. The push-button housing is thus inserted together with the tension member from above into the opening. The tension member fixes the push-button housing in the said opening. After the push-button housing is fixed, the at least one presser rod is preferably set relative to the outlet fitting. A stop element is hereby preferably mounted on the at least one presser rod and moves down with the presser rod and is positioned at an upper end of the outlet fitting. This allows a particularly precise adjustment of the at least one presser rod. If the position of the presser rod is set then this is preferably fixed by means of a rotary detent movement. This fixing could where necessary be easily released and the presser rod reset once more.

Further advantageous features are apparent from the dependent patent claims, the following description as well as the drawing. An embodiment of the invention will now be explained in further detail with reference to the drawings. These show:

Figure 1 a sectional view through an upper part of a cistern wherein the presser housing is inserted together with two presser rods into an opening of the cistern;

Figure 2 is a sectional view according to Figure 1 wherein the two presser rods are positioned on a stop;

Figure 3 is a sectional view according to Figure 1 wherein the two presser rods are fixed in the set position;

Figure 4 is a sectional view according to Figure 1, wherein the actuating device is completely mounted;

Figure 5 is a sectional view according to Figure 1 wherein the push-button of the actuating device was moved downwards for a flush release, and

Figures 6 to 10 show diagrammatically the individual steps when fixing the pushbutton housing in an opening of the cistern.

The cistern 1 which in Figure 1 is shown only in part has a cistern housing 4 and a lid 45. A wall 12 of the lid 45 has a by way of example circular opening 11 into which an actuating device 2 is inserted. In the case of this actuating device 2 the push-button 37 which is shown in Figure 4 has not yet been fitted. A drainage fitting 3 which is known per se is mounted inside the cistern housing 4 and has at a lower end an outlet valve (not shown here) which can be opened with the actuating device 2 for releasing a flush. Flushing water inside an interior space 5 of the cistern housing 4 is thereby released by way of example into a toilet bowl which is not shown here. The drainage fitting 3 is designed so that a partial flush or a full flush is optionally possible. The actuating device has accordingly a first presser rod 14 and a second presser rod 15. The first presser rod 14 interacts with a first slider 7 and the second presser rod 15 interacts with a second slider 8 of the drainage fitting 3. These sliders 7 and 8 are mounted in one fitment part 6 and can be moved downwards against the counteractive force of a spring 9. A lever 10 is provided to open the valve. The push-button 37 has accordingly a first push-button part 38 and a second push-button part 39. If only the first pushbutton part 38 is moved downwards, then correspondingly the first presser rod 14 is moved downwards to release a partial flush. If the second push-button part 31 is moved downwards then the first push-button part 38 is entrained and both presser rods 14 and 15 are moved downwards to release a full flush. The actuating device 2 can also be designed so that only a full flush is possible. An actuating device 2 of this kind has correspondingly only one presser rod.

The actuating device 2 has a push-button housing 13 in which a tension member 18 is mounted. The push-button housing 13 can be fixed in the opening 11 by means of this tension member 18. This will be explained below in further detail with reference to Figures 6 to 10. The push-button housing 13 and the tension member 18 are shown diagrammatically here for easier comprehension.

As shown in Figure 6, the push-button housing 13 has on an upper edge an outwardly projecting flange 21. A by way of example cylindrical side wall 22 projects downwards from this. The side wall 22 has lateral openings 23 and is moulded on a base 27 in which a tension member 18 is mounted displaceably. For this the tension member 18 has a downwardly projecting guide part 31 which projects through an opening 32 in a base 27. Between the base 27 and a wall 30 is a spring element 26. Detent lugs 33 at the lower end of the guide part 31 prevent the tension member 18 from being raised above the position illustrated in Figure 6. The tension member 18 has two opposing spring arms 24 which in the position according to Figure 6 project sideways out of the push-button housing 13 through the openings 23.

In order to anchor the push-button housing 13 in the opening 11, the housing is inserted into the opening 11 together with the tension member 18 according to Figure 6 in the direction of the arrow 25. The two spring arms 24 are hereby deflected inwards spring-elastically according to Figure 7. The push-button housing 13 is inserted according to Figure 7 so far into the opening 11 that the flange 21 rests on an outer side 19 of the wall 12 of the cistern 1. In order to anchor the push-button housing 18 in the opening 11, the tension member 18 on a presser 36 is now moved downwards against the counteractive force of the spring element 26. The two spring arms 24 are correspondingly likewise moved downwards and thereby leave the opening 11 so that they are finally relaxed according to Figure 8 and can pass into the expanded starting position. The expanded spring arms 24 are thus located completely underneath the wall 12. The pushbutton housing 13 can now no longer be removed from the opening 11 since the two spring arms 24 are present on the underneath side 20. The spring arms 24 are tensioned against the underneath side 20 through the tension of the spring element 26. The flange 21 is correspondingly pressed against the outer side 19.

The tension member 18 on the presser 36 can be moved even further down from the position illustrated in Figure 8 until the wall 30 bears against the base 27. With this movement the two spring arms 24 are moved radially inwards through a stop on the side wall 22. At the same time the tension member 18 is locked on a detent part 28 of the base 27. The detent part 28 hereby engages in an opening 29 of the wall 30. Since the two spring arms 24 are swivelled inwards, the pushbutton housing 13 can be removed from the opening 11 according to Figure 10 in the direction of the arrow 34. By releasing the detent part 28, the tension member 18 can again be brought into the starting position illustrated in Figure 6. The push-button housing 13 can be refitted again hereon.

The push-button housing 13 illustrated in Figure 1 was mounted according to Figures 6 to 8. The two presser rods 14 and 15 which are omitted from Figures 6 to 10 for graphic reasons must now be positioned relative to the drainage fitting 3. The presser rods 14 and 15 are hereby mounted displaceably in a slide gate 41. Two guide parts 42 and 43 are provided for mounting same. The first guide part 42 receives the first presser rod 14 and the second guide part 43 receives the second presser rod 15. These guide parts 42 and 43 are mounted vertically displaceably in the slide gate 41. In order to adjust the presser rods 14 and 15, these are turned about their longitudinal axis so that they disengage with the guide parts 42 and 43 and are each moved downwards in the longitudinal direction into the position shown in Figure 2. Stop elements 16 mounted on the presser rods 14 and 15 are hereby likewise moved downwards. The desired position is reached as soon as these stop elements 16 rest on the fitment part 6. The two presser rods 14 and 15 are now each turned by way of example 90° around their longitudinal axis so that they are locked with the first guide part 42 and second guide part 43 respectively. The two stop elements 16 are likewise pivoted and no longer form any stop in the pivoted position. The two presser rods 14 and 15 are now positioned precisely relative to the drainage fitment 3 and relative to the two sliders 7 and 8 respectively. These positions are shown in Figure 3.

Next the push-button parts 38 and 39 are now placed on the two presser rods 14 and 15 and inserted in the push-button housing 13 respectively. By pressing the two push-button parts 38 and 39 of the first push-button part 38, a flush can be released. The push-button 37 projects as apparent over the outer side 19 of the cistern housing 4. This is however not essential. The push-button 37 could also be flush relative to the outer side 19 or relative to a cover plate 44 of the pushbutton housing. The cover plate 44 is formed in a ring as shown and covers the push-button housing 13. Figure 5 shows the actuating device 2 after the release of a full flush. The push-button 37 is now located in a lower position. The spring elements 40 are tensioned so that the push-button 37 is returned again to the position shown in Figure 4 as soon as it is let go.

Claims (9)

An actuator for a cistern drain kit, having a key housing (13) having a bottom (27) and a side wall (22) connected to the bottom (27), wherein at least one key (37) is mounted for the flushing release and with fasteners for attaching the key housing (13) to an opening (11) in a wall (12) of the cistern (1), whereby the fastening means comprise a clamping means (18) arranged on the key housing (13), which together with the key housing (13) is arranged for can be inserted into said opening (11), whereby the key housing (13) is fastened in this opening (11), characterized in that the clamping means (18) comprises at least one spring leg (24), with which the key housing (13) is lockable in opening (811) of the tank (1), whereby the spring leg (24) bends inwardly at the insertion of the key housing and subsequently exits in a flared position that the clamping member (18) is slidably mounted in the key housing (13), that the fastening means comprises at least one spring element (26). ) with which the key housing (13) is in directed to be able to be clamped against the wall (12) of the tank (1), whereby the spring element (26) is arranged between the key housing (13) and the clamping member (18) and whereby the spring leg (24) is clamped by the tension of the spring element (26). against the underside (20) of the tank (1), that the bottom (27) comprises a locking member (28) with which the clamping means (18) is arranged to engage, whereby the locking member (28) engages an opening (29) in the wall (30) of the clamping member (18) and the clamping member (18) for releasing the key housing (13) is displaceable downwardly against a retroactive force in the spring member (26), whereby the clamping member (18) engages in the downwardly moving state with the locking member (28), thereby moving the at least one spring leg (24) radially inwardly by a stop against the side wall (22) of the key housing (13), so that the key housing is adapted to be pulled out of the opening (11) and the clamping means is brought into the starting position by the release of the locking part (28) see. Activation device according to claim 1, characterized in that the spring element (26) is arranged between the clamping means (18), especially between the bottom (30) and the bottom of the key housing (27). Activating device according to one of claims 1 to 2, characterized in that at least one push rod (14, 15) is mounted in the key housing (13) which is movable downward for the purpose of flushing the key (37). Activation device according to claim 3, characterized in that the at least one push rod (14, 15) is fixed in the longitudinal direction with pivot locking means. Activation device according to one of claims 1 to 4, characterized in that the key housing (13) is formed in substantially bowl-shaped shape and has an outwardly projecting flange (21) which can be clamped against an external member by the clamping means (18). side (19) of the wall (12) of the cistern (1). Activating device according to one of Claims 1 to 5, characterized in that the clamping means (18) is housed within the key housing (13). The cistern with an activating device according to any one of claims 1 to 6. Method for mounting an actuator according to one of claims 1 to 6 on a cistern, characterized in that the key housing (13) is inserted together with the clamping means (18) from above in the opening (11) of the cistern (1) and secured with the clamping means (18). ) in this opening (11). Method according to claim 8, characterized in that at least one push rod (14, 15) of the flushing container outlet set (3) is adjusted after the attachment of the key housing (13), which is adjusted in its longitudinal direction and finally fixed.