EP2767639B1 - Outlet fitting for a toilet cistern - Google Patents

Description

TECHNICAL AREA

The present invention relates to a drain fitting or a drain valve for a cistern according to the preamble of claim 1.

STATE OF THE ART

From the WO 2009/012234 a flushing device has become known. The flushing device comprises a latching mechanism with a plurality of pawls, wherein the control of the valve takes place via the latching mechanism. A Vollmengenpüleinheit acts on a first Einrastrad and a Teilmengenpüleinheit acts on a second Einrastrad. About this Einrasträder the valve body is controlled. The control of the valve body after the WO 2009/012234 However, it has the disadvantage that it only works unreliably. Next is the waste according to the WO 2009/012234 only very expensive to produce.

From the DE 197 48 621 is a drain valve according to the preamble of the independent claim 1 become known, which also allows a partial flush and a full flush. For this purpose, a Kippschwimmer is provided, which has a holding pawl, which holds the drain pipe in the raised flushing position until the desired flushing volume was delivered. The tilting float is doing a full-scale control unit in the sense of the application and will tip over when reaching the appropriate level of the drain pipe and release this. As a result, the full flush can be triggered. Furthermore, a complex mechanism is provided, which can be switched on the tilting float. However, since the full-quantity control unit and the holding pawl are not formed as separate components, the design possibility of the full-quantity control unit is limited.

PRESENTATION OF THE INVENTION

Based on this prior art, the invention has for its object to provide a waste set, which overcomes the disadvantages of the prior art. In particular, the design options for the control units should be increased.

• eine Auslöseeinheit zur Auslösung der Spülung, wobei mit der Auslöseeinheit der Ventilkörper von der Ruhelage in die Spüllage anhebbar ist,
• eine Vollmengensteuerungseinheit für die Steuerung einer Vollmengenspülung, wobei die Vollmengensteuerung bei Erreichen eines für die Vollmenge vorgesehenen Wasserstandes eine Schliesskraft bereitstellt, und
• eine Teilmengensteuerungseinheit für die Steuerung einer Teilmengenspülung, wobei die Teilmengensteuerung bei Erreichen eines für die Teilmenge vorgesehenen Wasserstandes eine Schliesskraft bereitstellt.

This object is achieved by the waste set according to claim 1. Accordingly, a Drain fitting for a cistern a valve body with a cooperating with a valve seat Sealing element, wherein the valve body is movable with the sealing element from the valve seat along a movement axis from a rest position in the spooling position and from the spill position to the rest position,

• a triggering unit for triggering the flushing, it being possible with the triggering unit to lift the valve body from the rest position into the flushing position,
• a full-quantity control unit for controlling a full-flush, wherein the full-scale control provides a closing force upon reaching a full-level water level, and
• a subset control unit for controlling a subset purge, wherein the subset control provides a closing force upon reaching a water level intended for the subset.

Further, the drain fitting comprises a holding pawl which is engageable with and holds in the spooling position with the valve body in the scavenge position, the closing force of the full amount control unit or the closing force of the subset control unit acting on said holding pawl and the engagement between valve body and holding pawl repeals, so that the valve body is movable from the scavenge to the rest position.

Both the full amount control unit and the subset control unit act on said holding pawl. Consequently, therefore, both control units act on a common holding pawl. Full quantity control unit and subset control unit thus work together with the valve body via the retaining pawl and control its return from the scavenge position to the rest position. The movement of the valve body from the rest position into the rinse position is, however, provided by the trigger unit. The trip unit may cooperate with the full amount control unit and / or subset control unit. According to the invention, exactly one single holding pawl is present, with both the full-quantity control unit and the partial quantity control unit acting on the holding pawl.

By arranging exactly one single retaining pawl, the reliability of the drain fitting can be increased, in particular because fewer parts of the drain fitting available. In addition, the number of parts can be reduced, resulting in a more efficient production. According to the invention, the full-quantity control unit and the partial quantity control unit are designed as components separate from the holding pawl and are movable relative to the holding pawl. Thus, a contact between the holding pawl and the respective control unit is provided upon actuation. Retaining pawl and the respective control unit are in other words not connected to each other, but formed separately from each other. The separation between the control unit and holding pawl has the advantage that the respective elements can be formed independently of each other, which increases the freedom of design.

In the presence of just a single holding pawl, both control unit act on this one holding pawl.

The full amount control unit and the subset control unit are preferably formed separately from each other. Consequently, the full-quantity control unit acts on the holding pawl without being coupled with the subset control unit, and the subset control unit acts on the pawl without being coupled with the full-quantity control unit. As a result of this decoupling of the two control units, each of the control units acts separately on the holding pawl.

The full-quantity control unit and the partial quantity control unit are preferably not designed to be coupled to each other. The full-quantity control unit and the partial quantity control unit are preferably constructed structurally independently of one another with regard to the movement against the retaining pawl and therefore act independently on the retaining pawl.

Preferably, either the partial quantity control unit acts directly on the holding pawl or the full quantity control unit acts directly on the holding pawl.

The non-coupling of the two control units, the reliability can be significantly increased. In the case of failure of a control unit can with the another control unit still a flush be completed.

Preferably, in a partial flush the Teilmengenpüleinheit is activated by the trip unit. The Vollmengenpüleinheit is preferably designed such that it does not have to be activated separately, because at a Vollmengenspülung the Teilmengenpüleinheit remains deactivated. It is therefore a passive activation of the Vollmengenpüleinheit by the Teilmengenpüleinheit is not activated. In other words, it can also be said that the subset purge unit is a priority in that the full range purge unit can not be activated when the partial purge is triggered. This activation is achieved by the fact that the elements provided for the provision of the closing force of the Vollmengenpüleinheit installed are below that of the Teilmengenpüleinheit. Such elements may be, for example, water chambers, as described below, when the water level in the cistern reaches the water chamber of the subset flushing unit, a weight force acting on non-activation of the subset flushing unit will not be effective because the subset flushing unit is locked. The water level can thus drop to the water chamber of Vollmengenspüleinheit, whereby the water chamber provides the closing force.

Preferably, a first stroke with a first stroke length and for triggering the Teilmengenspülung a second stroke with a second stroke length can be provided with the trip unit for triggering the full-flush. Thus, either the Teilmengenpüleinheit or Vollmengenpüleinheit can be controlled due to the different stroke length.

Particularly preferably, the second stroke length is greater than the first stroke length and upon reaching the second stroke length, the subset control unit can be activated, wherein the subset control unit acts on the said holding pawl. Upon reaching the first stroke length, the subset control unit is not activated, whereby the full amount control unit controls the valve body.

Preferably, the subset control unit is locked via a control pawl, wherein the control pawl is actuated by the trip unit during the subset purging and the lock can be canceled so that the subset control unit is activatable.

The control pawl is movable from a locking position, in which the subset control unit is held by the control pawl, into an unlocking position, in which the engagement between the control pawl and the subset control unit is canceled, so that the subset control unit is activated. Thus, if the control latch is in the unlock position, the subset control unit may provide said closing force. Otherwise, the subset control unit is prevented from moving through the lock, thereby bringing the full amount control unit to function.

The control pawl has an actuating portion and a latching portion between which a pivot point is located, wherein the triggering unit acts on the actuating portion and the latching portion of the latch of the subset control unit is used. When acting on the operating portion, the control pawl is pivoted about the pivot point, so that the lock between the subset control unit and the control pawl is released.

In a particularly preferred embodiment, the drain fitting further comprises a locking element, in particular a spring element, which holds the control latch in the unlocking position after actuation. The valve body can be brought into contact with the control latch during the movement into its rest position after flushing. About this contact, the connection between the locking element or spring element and control latch can be canceled, so that the control latch is movable into the locking position. For this purpose, the valve body particularly preferably has a cam which acts on the control pawl, the control pawl canceling the connection between the locking element or spring element and the control pawl upon contact with the cam.

Preferably, the full amount control unit comprises an actuator having an air chamber and a water chamber overlying the air chamber. Further, the subset control unit preferably includes an actuator having an air chamber and a water chamber overlying the air chamber. In installation position is the Actuating element of the full-quantity control unit below the actuating element of the subset control unit. In addition, the two control units may comprise an actuating rod, as explained below.

The said air chambers cause a buoyancy of the actuating element in flushing water with filling cistern and the water chambers cause a weight in emptying cistern. The full-quantity control unit and the partial quantity control unit thus experience a buoyancy force when the cistern is filled. The two units can be moved upwards along the valve body so that the holding pawl is released. Preferably, the water chambers fill with rinse water. This weight then provides the closing force.

Preferably, the buoyancy movement of the full-quantity control unit is limited by a stop element, wherein the full-quantity control unit is fixed to a stop element. The buoyancy movement of the subset control unit is preferably limited by said control latch, with which the subset control unit can be brought into engagement and lockable.

Particularly preferably, the said actuating elements further comprise an actuating rod, with which said closing force can be applied to the retaining pawl. The actuating rod thus serves to apply the closing force.

The actuating rod itself can be moved over a predefined range. Particularly preferably, the actuating elements are displaceable relative to the actuating rod.

Particularly preferably, the actuating elements, in particular the actuating rods, are translationally movable along a longitudinal direction. As a result, a structurally simple and reliable structure can be provided. The actuating elements, in particular the actuating rods, are preferably arranged relative to one another such that they act on a common holding pawl. Particularly preferably, the two actuating rods are adjacent to each other.

Particularly preferably, the holding pawl has a holding section with a latching element and a return section with a restoring element, wherein the restoring element presses the latching element against the valve body and the valve body has a contact element matching the latching element. About the contact element engages the latching element on the valve body and keeps it in the scavenge.

Particularly preferably, the return element is a float element, which experiences buoyancy in the rinse water.

The holding pawl preferably has a pivot point between the holding section and the return section, about which the holding pawl is movable away from the valve body or toward the valve body, wherein the fulcrum is fixed relative to the valve seat.

Further embodiments are given in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine schematische Ansicht einer erfindungsgemässen Ablaufgarnitur bei entleertem Spülkasten;

Fig. 2

eine schematische Ansicht der Ablaufgarnitur nach Fig. 1 bei befülltem Spülkasten;

Fig. 3

eine schematische Ansicht der Ablaufgarnitur nach Fig. 1 bei der Auslösung einer Vollmengenspülung;

Fig. 4

eine schematische Ansicht der Ablaufgarnitur nach Fig. 1 bei der Auslösung einer Teilmengenspülung;

Fig. 5

eine perspektivische Ansicht einer Ausführungsform einer erfindungsgemässen Ablaufgarnitur;

Fig. 6

eine Seitenansicht der Ablaufgarnitur nach Figur 5 ohne das Gehäuse bei entleertem Spülkasten;

Fig. 7

eine Seitenansicht der Ablaufgarnitur Figur 5 ohne das Gehäuse bei vollem Spülkasten;

Fig. 8a

eine Seitenansicht der Ablaufgarnitur nach Fig. 5 bei der Auslösung einer Vollmengenspülung;

Fig. 8b

eine Seitenansicht der Ablaufgarnitur nach Fig. 5 nach einer Vollmengenspülung;

Fig. 9a

eine Seitenansicht der Ablaufgarnitur nach Fig. 5 bei der Auslösung einer Teilmengenspülung;

Fig. 9d

eine Detailansicht der Figur 9a;

Fig. 9c

eine Seitenansicht der Ablaufgarnitur nach Fig. 5 bei einer Teilmengenspülung; und

Fig. 9d

eine Seitenansicht der Ablaufgarnitur nach Fig. 5 bei einer Teilmengenspülung;

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. 1

a schematic view of an inventive waste set with emptied cistern;

Fig. 2

a schematic view of the drain set after Fig. 1 with filled cistern;

Fig. 3

a schematic view of the drain set after Fig. 1 when triggering a full flush;

Fig. 4

a schematic view of the drain set after Fig. 1 when triggering a partial flush;

Fig. 5

a perspective view of an embodiment of an inventive waste set;

Fig. 6

a side view of the drain set after FIG. 5 without the housing with emptied cistern;

Fig. 7

a side view of the drain fitting FIG. 5 without the housing with full cistern;

Fig. 8a

a side view of the drain set after Fig. 5 when triggering a full flush;

Fig. 8b

a side view of the drain set after Fig. 5 after a full flush;

Fig. 9a

a side view of the drain set after Fig. 5 when triggering a partial flush;

Fig. 9d

a detailed view of the FIG. 9a ;

Fig. 9c

a side view of the drain set after Fig. 5 at a partial flush; and

Fig. 9d

a side view of the drain set after Fig. 5 at a partial flush;

DESCRIPTION OF PREFERRED EMBODIMENTS

In the figures, a waste set 1 is shown for a cistern. The cistern itself is not shown. The waste set is connected in a known manner with the cistern and is used to control a Teilmengenspülung and a Vollmengspülung.

The drain fitting 1 essentially comprises a valve body 2, a triggering unit 5 for triggering the flushing, a full-quantity control unit 6 for controlling a full-volume flushing, and a partial quantity control unit 7 for controlling a partial flushing.

The valve body 2 cooperates with a valve seat 3, which is part of the drain fitting 1 here. For this purpose, the valve body 2, a sealing element 4, which rests on the valve seat 3. The valve body 2 is at an actuation of the trip unit 5 together with the sealing element 4 from the valve seat 3 from a rest position, as in the Figures 1 and 2 shown in a rinse, as in the FIGS. 3 and 4 shown, liftable. In the Spüllage a gap 25 between the valve seat 3 and the sealing member 4 is free and rinse water can through this gap 25th to a toilet or urinal. The water flows in a known manner through a spout 35.

In the present embodiment, the tripping unit 5 comprises an actuating button 26 which acts on a lever mechanism 27. The lever mechanism 27 here has two levers, wherein the first lever 28 is rotatable about a pivot point 29 and thus correspondingly raises the second lever 30, which is in communication with the valve body 2. By the lever mechanism 27, the movement of the actuating button 26 can be deflected accordingly against the valve body 2, so that the valve body 2 is raised from the rest position into the scavenge. But the trip unit 5 can also be designed differently, it is important that with the trip unit 5 of the valve body is raised from the rest position into the scavenge.

The full-quantity control unit 6 serves, as already mentioned, to control a full-quantity purging. The full-quantity control unit 6 provides a closing force F upon reaching a water level intended for the full quantity. With the aid of this closing force F, as will be described below, the movement of the valve body 2 from the scavenging position to the rest position is controlled. The same can be said for the subset control unit 7, which also provides a corresponding closing force F upon reaching a water level intended for the subset.

The water level for the full flush is in the FIG. 1 is VM and the water level for the partial flush is in the FIG. 1 indicated with TM. The water level with completely filled cistern is denoted by V.

The drain fitting 1 further comprises a retaining pawl 8. The retaining pawl 8 is engageable with the valve body 2 when the valve body 2 is in the scavenge position. About this retaining pawl 8, the valve body 2 is held in the scavenge. The engagement of the retaining pawl 8 with the valve body 2 is in the FIGS. 3 and 4 shown. Here, the retaining pawl 8 engages a cam 31 on the valve body 2 accordingly. The valve body 2 is prevented in its movement from the scavenge to the rest position by the engagement of the retaining pawl 8 with the valve body 2. The said closing force F of Full-quantity control unit 6 or the closing force F of the subset control unit 7 acts on said holding pawl 8. In the FIG. 3 , in which the water level has been lowered to the level of the full quantities VM, the holding force F of the full-quantity control unit 6 acts on the holding pawl 8. In the FIG. 4 in which the water level has dropped to the level TM, the closing force F of the subset control unit 7 acts on the holding pawl 8. As soon as the closing force F acts on the holding pawl 8 either from the full amount control unit 6 or from the subset control unit 7, the engagement between the valve body 2 becomes and holding pawl 8 repealed, so that the valve body is movable from the scavenge to the rest position. The holding pawl 8 is thereby pivoted away from the valve body 2 upon the action of the closing force F, so that the holding pawl 8 is no longer in engagement with the cam 31 and the valve body 2 is movable relative to the holding pawl 8 from the scavenging position to the rest position. Particularly preferably, the full-quantity control unit 6 and the sub-quantity control unit 7 acts on a single holding pawl 8. The waste set 1 therefore comprises exactly one single holding pawl 8, which is particularly advantageous because the waste set can be designed in a reliable manner.

In the FIG. 5 a perspective view of the inventive drain set 1 is shown. In addition to the above features, that in the FIG. 2 shown drain fitting 1 further comprises a mounting portion 32 for attaching the drain fitting to a cistern and the attachment section 32 subsequent housing 33. The housing 33 serves in the storage of the valve body 2, the full amount control unit 6, the subset control unit 7 and the holding pawl 8, as well as further associated with the control units 6, 7 elements. Further, the drain fitting 1 still comprises an overflow pipe 34 through which rinse water in case of failure of a filling valve the outlet nozzle 35, which is below the valve seat 3, can be supplied.

In the following, the function and further features associated with the function of the inventive waste set 1 will now be explained in more detail with reference to the accompanying figures

In the FIGS. 1 and 6 the waste set 1 is shown with emptied cistern. Of the Water level 36 is here below the retaining pawl 8. With increasing water level, the water comes into contact with the retaining pawl 8. Here, the retaining pawl 8 has a float element 14, which experiences a buoyancy. By the buoyancy, the retaining pawl 8 is moved against the valve body. Next learn then the actuators 17, 20 via the air chambers 18, 21 of the control units 6, 7 also a buoyancy, whereby the control units 6, 7 are also moved upwards.

In the embodiment shown, the full-quantity control unit 6 comprises the said actuating element 17 with an air chamber 18 and a water chamber 19 located above the air chamber 18. The actuating element 17 is further connected to an actuating rod 23, which ultimately acts on the retaining pawl 8. The actuating element 17 is preferably displaceable relative to the actuating rod 23, so that the height of the actuating element 17 in the cistern is adjustable, whereby the amount of flushing water to be removed is adjustable. Actuating element 17 and actuating rod 23 are movable relative to the retaining pawl 8. Furthermore, the partial quantity control unit 6 comprises the said actuating element 20 with an air chamber 21 and a water chamber 22 lying above the air chamber 21. The actuating element 20 is furthermore connected to an actuating rod 24, which ultimately acts on the retaining pawl 8. The actuating element 17 is preferably displaceable relative to the actuating rod 24, so that the height of the actuating element 20 in the cistern is adjustable, whereby the amount of flushing water to be removed is adjustable. Actuator 20 and actuating rod 24 are movable relative to the retaining pawl 8. Actuator 20 and actuating rod 24 are movable relative to the retaining pawl 8.

Said air chambers 18, 21 cause a buoyancy on actuator 17, 20 in cistern filling. The water chambers 19, 22 cause a weight with empty cistern, which then acts as a closing force.

The actuating elements 17, 20 preferably extend at least partially around the valve body 2 and are movably mounted in the housing 33. The valve body 2 is also movably mounted in the housing 33 via guides 37 not shown in detail.

In the Figures 2 and 7 the waste set is shown when the cistern is filled. The water level 36 is here above the control unit 6, 7. The retaining pawl 8 is located on the valve body 8 due to the action of the float member 14 at. The control unit 6, 7 are due to the buoyancy of the air chambers 18, 21 in an upper position. The subset control unit 7 is also in contact with a control pawl 15. The control pawl 15 locks the subset control unit 7 in the housing of the waste set 1, so that the subset control unit 7 is held stationary in the housing 33. The engagement of the control pawl 15 in the subset control unit 7 will be explained in detail below. The full amount control unit 6 is held in an upper position by the buoyancy, with a stopper member limiting the upward movement. For example, serve as a stop element lying above the full amount control unit 6 subset control unit 7.

Starting from the in the Figures 2 and 7 shown position, the flushing can be triggered. Here, the user actuates the trip unit 5. With the trip unit 5, a first stroke with a first stroke length H1 and for triggering the Teilmengenspülung a second stroke with a second stroke length H2 can be provided for the triggering of the full-flush. In the present embodiment, the strokes are provided via the button 26.

In the Figures 3 and 8a and 8b the full flush is shown. For triggering the full-flush, the trip unit 5 and the button 26 of the trip unit 5 is moved with a stroke over the stroke length H1 down. As a result of this movement, the valve body 2 is raised from the rest position into the scavenging position and lies with the sealing element 4 at a distance from the valve seat 3, so that the rinsing water can flow through the intermediate space 25. The retaining pawl 8 engages the valve body 2 and holds it in the flushing position. For this purpose, the valve body 2 in the present embodiment, a cam 31. The interaction between cam 21 and retaining pawl 8 will be explained below. The water level in the cistern drops until the level VM has been reached. The level VM is defined by the position of the actuating element 17. As soon as the water level 36 below the Water chamber 19 of the actuating element 17 of the full amount control unit 6 falls, the water located in the water chamber 19 acts as a weight and provides the said closing force F ready. The actuating element 17 acts, here via an actuating rod 23, on the retaining pawl 8, which is moved away from the valve body 2. The engagement between the retaining pawl 8 and the cam 31 on the valve body 2 is thus canceled, whereby the valve body 2 is moved due to its own weight of the scavenge in the rest position.

In the Vollmengenspülung the Teilmengenpüleinheit 7 remains in the locked state, because the control latch 15 is not actuated. This due to the fact that the control pawl is not actuated by the trigger element 5.

The cistern can then be refilled with rinse water in a known manner, the state according to the Figures 2 and 7 is restored.

In the FIGS. 4 and 9a to 9d the partial flush is shown. For triggering the partial flush, the trip unit 5 and the button 26 of the trip unit 5 is moved with a stroke over a stroke length H2 down. The stroke length H2 is greater than the stroke length H1. As a result of this movement, the valve body 2 is raised from the rest position into the scavenging position and lies with the sealing element 4 at a distance from the valve seat 3, so that the rinsing water can flow through the intermediate space 25. At the same time, the trip unit 5 acts on the control pawl 15 and unlocks the Teilmengenpüleinheit 5, so that the actuator 20 of the Teilmengenpüleinheit 5 can move relative to the control pawl 15. The suspension of the Teilmengenpüleinheit 5 is therefore canceled. The control pawl 15 is reached by the stroke over the stroke length H2 by the trip unit 2, here by the key 26. The flushing position of the valve body 2 during the partial flushing may be higher than the flushing position during the full flush. The valve body 2 returns a larger stroke. The retaining pawl 8 engages the valve body 2 and holds it via the cam 31 in the scavenge. The water level 36 in the cistern drops until the level TM is reached. The level of the subset is defined by the actuator 20. As soon as the water level 36 falls below the water chamber 22 of the actuating element 20 of the subset control unit 7, the water chamber 22 is located in the water chamber Water as weight, providing the said closing power. The actuating element 20 acts, here via an actuating rod 24, on the retaining pawl 8, which is moved away from the valve body 2. The engagement between the retaining pawl 8 and the valve body 2 is thus canceled, whereby the valve body 2 is moved from the scavenge to the rest position.

When triggering the partial flush, deactivation of the full flush is not necessary because the partial flush with the described control regime is a priority.

When refilling the cistern 2, the actuator 20 undergoes a buoyancy via the air chamber 21 and comes into contact with the control pawl 15, wherein the partial quantity control unit 7 is again locked to the control pawl 15. It is thus restored to the initial state.

Based on the figures, in particular the FIGS. 3, 4 and 9a to 9d Now the control latch 15 and its locking function of the subset control unit 7 will be explained in more detail. The control pawl 15 comprises an actuating portion 39 and a latching portion 40. Between the actuating portion 39 and the latching portion 40 is a pivot point 41 about which the control pawl 15 is pivotable. The fulcrum 41 can be provided, for example, by an axle which is in communication with the housing 33, thus the control pawl 15 is stationary in the housing 33 with respect to its height. The triggering unit 5 acts on the actuating section 39, here with the button 26. In this case, the button 26 must act over the stroke length H2 against the fixed in the housing 33 control pawl 15. This is in the FIG. 4 shown. By pressing on the actuation section 39, the control latch with the latching section 40 is pivoted away from the subset control unit 7. In this case, the lock between control latch 15 and subset control unit 7 is released. In the present embodiment, the partial quantity control unit 7 has a latching opening 42 into which engages a latching lug 43, which is formed on the latching section 40. The latching opening is part of the actuating rod 24. The latching nose 43 thus protrudes into the latching opening 42, wherein said locking takes place. When pivoting the control pawl 15, the engagement between locking lug 43 and latching opening 42 is canceled accordingly, so that the subset control unit 7 relative to Control latch 15 can move.

In the FIG. 4 and 9a a locking element or a spring element 16 is shown in contact with the control pawl 15. The control pawl 15 is held after actuation in the triggering of the partial flush with the locking element or spring element 16, so that the control pawl 15 is separated from the subset control unit 7. This prevents that after the elimination of the actuating force by the trip unit 5, the control latch 15 falls back into the locked position. When the valve body 2 then moves past the control pawl 15 during the movement from the scavenging position to the rest position, the valve body 2 comes into contact with the latching portion 40 of the control pawl 15 with a cam 38. Here, the connection between the control pawl 15 and the locking element or spring element 16 is lifted accordingly, so that the control pawl 15 can pivot back into the locking point. The control pawl 15 and the subset control unit 7 are designed so that the subset control device 7 automatically hangs on the control pawl 15 accordingly.

The holding pawl 8 comprises a holding section 9 with a latching element 10 and a return section 11 with a return element 12. Between the holding section 9 and the return section 11 a pivot point 44 is arranged, about which the holding pawl 8 can pivot. The return element 11 presses the latching element 10 against the valve body 2. The valve body 2 in this case proves a latching element 10 matching contact element 13. Preferably, the contact element 13 is a cam 31 which protrudes from the surface of the valve body. Alternatively, the contact element 13 could also be an opening arranged in the valve body 2.

The return element 12 here has the shape of a float element 14, which experiences a buoyancy in the rinse water. This ensures that the holding pawl 8 is pressed against the valve body 2 in the presence of rinsing water. If the valve body 2 is then moved upwards relative to the stationary holding pawl 8, in particular during the movement from the rest position into the scavenging position, the cam 31 passes the latching element 10. In this case, the holding pawl 8 is pivoted away from the valve body 2 for a short time. As soon as the cam 31 has completely passed the latching element 10, the Holding pawl 8 moves due to the float member 14 and the return element 12 again against the valve body 2. The valve body 2 can then no longer be moved downwards because the latching element 10 together with the contact element 13 or the cam 31 blocks the movement of the valve body 2 downwards. This blocking is in the FIGS. 8a and 9a or 9c shown. In connection with the FIGS. 9a and 9c can also be recognized that the valve body 2 is moved further in the partial flushing up. The contact element 13 is thus above the holding pawl 8. In the downward movement after elimination of the operation of the trip unit of the valve body 2 according to the FIG. 9a moved down and the contact element 13 comes into contact with the retaining pawl 8, as shown in the FIG. 9c is shown.

The pivot point 44 may be provided, for example, by an axle connected to the housing 33. The pivot point and thus also the retaining pawl 8 are stationary with respect to their height in the housing.

Of the FIG. 5 In addition, the actuating rods 23 and 24 of the units 6 and 7 can be detected. LIST OF REFERENCE NUMBERS 1 waste 27 lever mechanism 2 valve body 28 first lever 3 valve seat 29 pivot point 4 sealing element 30 second lever 5 trip unit 31 cam 6 Full volume control unit 32 attachment section 7 Subset control unit 33 casing 8th retaining latch 34 Overflow pipe 9 holding section 35 outlet connection 10 latching 36 water level 11 Returning section 37 guide 12 Return element 38 cam 13 contact element 39 actuating section 14 float element 40 detent portion 15 control pawl 41 pivot point 16 Locking / spring element 42 latching opening 17 Actuator VM 43 locking lug 18 air chamber 44 pivot point 19 water chamber 20 Actuator TM TM Water level subset 21 air chamber VM Water level subset 22 water chamber V Water level filling 23 actuating rod F closing 24 actuating rod 25 gap 26 actuating button

Claims (18)

1. Drain fittings (1) for a cistern, said drain fittings comprising

   a valve body (2) with a sealing element (4) which interacts with a valve seat (3), wherein the valve body (2) is movable with the sealing element (4) from the valve seat (3) along a movement axis (B) from a rest position into a flushing position and from the flushing position into the rest position,

   a triggering unit (5) for triggering the flushing operation, wherein the valve body (2) is liftable from the rest position into the flushing position by way of the triggering unit (5),

   a full amount control unit (6) for controlling a full amount flushing operation, wherein the full amount control means provides a closing force (F) when the water level provided for the full amount is reached,

   a part amount control unit (7) for controlling a part amount flushing operation, wherein the part amount control means provides a closing force (F) when the water level provided for the part amount is reached,

   wherein the drain fittings (1) also include precisely one single retaining pawl (8) which is movable into engagement with the valve body (2) when said valve body is in the flushing position and holds said valve body in the flushing position,

   wherein both the full amount control unit (6) and the part amount control unit (7) act on the retaining pawl (8) such, that the closing force (F) of the full amount control unit (6) or the closing force (F) of the part amount control unit (7) can be applied on the said retaining pawl (8) and lifts the engagement between the valve body (2) and the retaining pawl (8) such that the valve body (2) is movable from the flushing position into the rest position,
   characterized in that the full amount control unit (6) and the part amount control unit (7) are realized separately from the retaining pawl (8) and are movable in relation to the retaining pawl (8), wherein a contact is provided between the retaining pawl (8) and the respective control unit (6, 7) on actuation of the respective control unit (6, 7).
2. Drain fittings according to claim 1, characterized in that the full amount control unit (6) and the part amount control unit (7) are realized separately from one another or independently of one another such that the control units (6, 7) act on the retaining pawl (8) independently of one another.
3. Drain fittings according to one of the preceding claims, characterized in that in the case of a part amount flushing operation the part amount flushing unit (7) is activated by the triggering unit (5), and in that in the case of a full amount flushing operation the part amount flushing unit (7) remains deactivated when the full amount flushing operation is triggered and the full amount flushing unit (6) becomes active.
4. Drain fittings according to one of the preceding claims, characterized in that by way of the triggering unit (5), a first travel (H1) with a first travel length can be provided for triggering the full amount flushing operation and a second travel (H2) with a second travel length can be provided for triggering the part amount flushing operation.
5. Drain fittings according to Claim 4, characterized in that the second travel length (H2) is greater than the first travel length (H1) and when the second travel length (H2) is reached, the part amount control unit (7) is activatable, wherein the part amount control unit (7) acts on the said retaining pawl (8).
6. Drain fittings according to one of the preceding claims, characterized in that the part amount control unit (7) is locked by means of a control pawl (15), wherein the control pawl (15) is actuated by the triggering unit (5) in the case of the part amount flushing operation and the locking can be lifted such that the part amount control unit (7) is activatable.
7. Drain fittings according to Claim 6, characterized in that the control pawl (15) has an actuating portion (39) and a latching portion (40) and a pivotal point (41) is located between said portions (39, 40), wherein the triggering unit (5) acts on the actuating portion (39) and the latching portion (40) serves for locking the part amount control unit (7).
8. Drain fittings according to Claim 6 or 7, characterized in that the drain fittings also include a stopping element, in particular a spring element (16), by means of which, following successful actuation, the control pawl (15) is held in an unlocking position, wherein the valve body (2), when moving into its rest position after a successful flushing operation, can be moved into contact with the control pawl (15) and lifts the connection between the stopping element (16) and the control pawl (15) such that the control pawl (15) is movable into the locking position.
9. Drain fittings according to Claim 8, characterized in that the valve body has a cam (38) which acts on the control pawl (15).
10. Drain fittings according to one of the preceding claims, characterized in that the full amount control unit (6) includes an actuating element (17) with an air chamber (18) and a water chamber (19) which is located above the air chamber (18) and in that the part amount control unit includes an actuating element (20) with an air chamber (21) and a water chamber (22) which is located above the air chamber (21), wherein the actuating element (17) of the full amount control unit (6) is located in the position of installation below the actuating element (20) of the part amount control unit (7), wherein the air chambers (18, 21) bring about a lift of the actuating element (17, 20) when the cistern is filling and wherein, when the cistern is emptying, the water chambers (19, 22) provide a weight which then acts as a closing force.
11. Drain fittings according to Claim 10, characterized in that the actuating element (17) of the full amount control unit and/or the actuating element (20) of the part amount control unit additionally includes an actuating rod (23, 24), by way of which the said closing force can be applied onto the retaining pawl (8) and/or in that the actuating elements (17, 20), in particular the actuating rods (23, 24), are movable in a translatory manner along a longitudinal direction.
12. Drain fittings according to one of the preceding claims, characterized in that the full amount control unit (6) and the part amount control unit (7) experience a lifting force when the cistern is filling and can be moved upward along the valve body (2) such that the retaining pawl (8) is released.
13. Drain fittings according to one of claims 6 to 9 and 11, characterized in that the lifting movement on the full amount control unit (6) is limited by a stopping element and is stationary at a stopping element and in that the lifting movement on the part amount control unit (7) moves the latter into engagement with the said control pawl (15) and locks it.
14. Drain fittings according to one of the preceding claims, characterized in that the retaining pawl (8) has a holding portion (9) with a latching-in element (10) and a restoring portion (11) with a restoring element (12), wherein the restoring element presses the latching-in element (10) against the valve body (2) and in that the valve body has a contact element (13) which is adapted to the latching-in element (10).
15. Drain fittings according to Claim 14, characterized in that the restoring element (12) is a floater element (14) which experiences a lift in the flushing water.
16. Drain fittings according to Claim 13 or 15, characterized in that between the holding portion (9) and the restoring portion (11) the retaining pawl (8) has a pivotal point (D) about which the retaining pawl (8) is movable away from the valve body (2) or toward the valve body (2), wherein the pivotal point (44) is fixed with reference to the valve seat (3).
17. Drain fittings according to one of the preceding claims, characterized in that the drain fittings (1) additionally include a housing (33) which is fixedly connectable to the cistern,
    wherein the valve body (2) is movably mounted in the housing (33),
    wherein the retaining pawl (8) is pivotable about a pivotal point (44) which is fixed with reference to the housing,
    wherein the control pawl (15) is pivotable about a pivotal point (29) which is fixed with reference to the housing,
    wherein parts of the full amount control unit (6) and parts of the part amount control unit (7) are movable along the direction of movement of the valve body (2) with reference to the housing.
18. Drain fittings according to claim 11 and 17, wherein the said parts are the actuating elements (17, 20) with the actuating rods (23, 24) and wherein the said parts are guided in the housing (33).

Images