ES2773851T3 - Flush fitting for a cistern - Google Patents

Abstract

Discharge taps (1) for a cistern, comprising a valve body (2) with a sealing element (4) that collaborates with a valve seat (3), in which the valve body (2) is mobile with the sealing element (4) from the valve seat (3) along an axis of movement (B) from a rest position to the wash position and from the wash position to the rest position, a total quantity control unit (5) to control a partial quantity wash, and a retaining pawl (7), which can be brought into engagement with the valve body (2), when the latter is in gear. the washing position, and holds it in the washing position, in which the total quantity control unit (5) and the partial quantity control unit (6) are movable with respect to the retaining pawl (7 ) and collaborate with it, in which at least one of the control units (5, 6) is in contact with the retaining pawl (7) at least when the tank is full, in which the retaining pawl (7) is supported through this control unit (5, 6) with a supporting force, in such a way that it is pressed against the body of the tank. valve (2) and establishes a retention joint with the valve body (2) in the wash position, and in which when a planned water level is reached, said support action is suppressed, thereby canceling the retention joint between the valve body (2) and the retention pawl (7), so that the valve body (2) is movable from the flushing position to the rest position, characterized in that it is present exactly a single detent pawl (7) configured separately from the total quantity control unit (5) and the partial quantity control unit (6), and because exclusively the total quantity control unit (5) it is in contact with the retaining pawl (7). in which the partial quantity control unit (6) can be temporarily connected during a partial quantity wash with the total quantity control unit (5) via a switching member (17), so The partial quantity control unit (6) acts through the total quantity control unit (5) on the retaining pawl (7).

Description

DESCRIPTION

Discharge taps for a cistern

TECHNICAL FIELD

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

STATE OF THE ART

A washing device is known from WO 2009/012234. The flushing device comprises a multi-pawl engagement mechanism, in which the valve is controlled through the engagement mechanism. A full quantity washing unit acts on a first lace wheel and a partial quantity washing unit acts on a second lace wheel. Through these locking wheels the valve body is controlled.

The valve body control according to WO 2009/012234 has, however, the drawback that it only works unreliably. Furthermore, the drain fitting according to WO 2009/012234 can only be manufactured very expensively.

Other washing devices are known from publications WO 2009/012226, DE 19748621 and EP 1719 844.

REPRESENTATION OF THE INVENTION

From document DE 19748621 A1, the invention has the task of indicating a drain fitting, which solves the drawbacks of the state of the art. In particular, the reliability of such a drain fitting must be increased.

This task is solved with the fitting according to claim 1. Accordingly, a discharge fitting for a cistern comprises a valve body with a sealing element that cooperates with a valve seat, wherein the valve body is movable as the sealing element from the valve seat along an axis of movement from a rest position to the wash position and from the wash position to the rest position, a total quantity control unit for controlling a full quantity wash, a partial quantity control unit for controlling a partial quantity wash and a retaining pawl, which can be brought into engagement with the valve body, when the latter is in in the wash position and holds it in the wash position. The total quantity control unit and the partial quantity control unit are movable relative to the retaining pawl and cooperate with it. At least when the tank is full, at least one of the control units is in contact with the retaining pawl, so that the retaining pawl is supported through this control unit with a supporting force, so that This is pressed against the valve body as well as establishes a holding connection with the valve body in the flushing position and holds the valve body in the flushing position. The detent pawl is therefore pressed through the control unit against the valve body, so that the detent pawl is supported for this purpose. When a predicted water level is reached, said supporting action is canceled, thereby canceling the retention joint between the valve body and the retention pawl, so that the valve body is movable from the position wash to rest position. The discharge fitting comprises exactly one single retaining pawl, so that only the total quantity control unit is in contact with the retaining pawl, so that the partial quantity control unit in the event of a wash With the partial quantity, it is possible to temporarily connect to the control unit for the total quantity via a switching device, so that the control unit for the partial quantity acts via the control unit for the total quantity on the retention pawl.

Through the support of the retaining pawl via the total quantity control unit or via the total quantity control unit, a particularly simple and especially function-proof drain fitting can be prepared. Functional safety is achieved in particular because the control units actively prepare a support action and the detent pawl moves to the rest position when it is withdrawn.

The support force is preferably prepared by a supporting force from the corresponding control unit.

The retaining pawl is configured separately from said control units. The control units act after washing on this retaining pawl. The washing units can act in a independently of each other or coupled to each other on the retaining pawl.

Preferably, the partial quantity control unit conditions a closing force on the retaining pawl when a intended water level for the partial quantity is reached. Preferably, the total quantity control unit conditions a closing force on the retaining pawl when a specified water level for the total quantity is reached, with whose closing force the suppression of the abutment action is supported. The closing force acts additionally and / or as support to suppress said support action. The closing force can act directly through the corresponding control unit on the retaining pawl. Alternatively, the closing force can act indirectly on the retaining pawl, so that the closing force can then be transmitted from one control unit to the other control unit, which then acts through the latter on the retention pawl.

Preferably, the control unit that supports the retention pawl comprises a support body, which experiences a support when the tank is full, and a support element, which supports the retention pawl during the support. The holding force, which acts on the retaining pawl, supports it and is pressed against the valve body. In the event of suppression of the bearing force or the bearing force, the bearing action drops and the valve body can be moved from the wash position to the rest position.

Preferably, the latch pawl comprises a latch arm with a locking element and an activation arm, wherein the activation arm cooperates with the control unit. The valve body is held in the flushing position through the collaboration between the latch element and the stop element.

In particular, the support element acts on the activation arm and supports it. The retaining pawl is preferably configured in such a way that it automatically moves out of the valve body when the bearing force is removed. But this movement can be supported through the control units.

Preferably, the retaining pawl comprises between the retaining arm and the actuating arm a pivot point, around which the retaining pawl can be moved from the valve body or towards the valve body. In this case, the two arms are preferably configured in such a way that when the abutment action is canceled, the retaining pawl moves out of the valve body.

In a particularly preferred manner, said valve body is in connection with a rod and is movable along this rod. Furthermore, the bearing element is fixedly connected to the rod, so that the rod is movably housed in a guide, the guide of which extends parallel to the direction of movement of the valve body. Consequently, the support body, the support member and the bar can be moved along a longitudinal translational movement.

In a particularly preferred manner, exactly one single retaining pawl is present, in which both the total quantity control unit and also the partial quantity control unit act directly or indirectly on the retaining pawl.

In a particularly preferred embodiment, the total quantity control unit comprises a fork section, into which parts of the retaining pawl, preferably the actuating arm, engage so that through the fork section there are You can apply the supporting force and, if necessary, the closing force on the retaining pawl.

Preferably, the switching member is a switching pawl, which can preferably be connected to the bar of the total quantity control unit. The switch pawl engages with the switch pawl when a partial quantity wash is activated.

In a development of the invention, the partial quantity control unit comprises a switching member, which acts on the retaining pawl during the partial washing and prepares a closing force on the retaining pawl, so that the locking member Switching can be brought into engagement with the detent pawl during actuation.

In a particularly preferred manner, the supporting force of the total quantity control unit supports the partial quantity control unit until the resistance provided for the partial quantity is reached, so that said closing force acts on the retention pawl and overrides the retention joint. The closing force is in this case greater than the support force, which is conditioned by the lifting force. In other words, the supporting force opposes the weight force of the partial quantity control unit. As soon as the water level has dropped to the point that the total quantity control unit is no longer in the water and the weight force is activated, said closing force acts against the force of support for. Since the bearing force is less than the weight force, the engagement between the retaining pawl and the valve body is canceled.

In a particularly preferred manner, said switch member is a switch bar, which can be brought into contact with a surface of the ratchet arranged inclined relative to the direction of movement and where when the water resistance provided for the partial quantity is reached , through the effective weight of the partial quantity control unit, the ratchet moves on the inclined surface outside the valve tube.

Preferably, the total quantity control unit comprises in another embodiment a support body and is held in the rest position on a spring pawl in one position. In the case of activation of the partial quantity control unit, the holding connection is canceled and the partial quantity control unit moves in the case of suppression of the support action to the lower position and acts there with the switch member on the retaining pawl. At the same time or subsequently, said retaining connection is established again.

The drain valve further comprises a housing, which can be fixedly connected to the tank, so that the valve body is movably mounted in the housing, so that the retaining pawl is pivotable around a fixed pivot point relative to the casing, so that part of the total quantity control unit and parts of the partial quantity control unit are movable relative to the casing along the direction of movement of the valve body, so that said parts are especially the activation elements with the activation bars and wherein said parts are guided in the housing.

Preferably, the discharge fitting further comprises a damping element which is in connection or can be brought into connection with the valve body.

The total quantity control unit and the partial quantity control unit preferably comprise a water chamber, which is carried with water when the tank is full, the water of which conditions a closing force as the water tank empties.

Other embodiments are indicated in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention are described below with the aid of the drawings, which serve for explanation only and should not be construed as limitation. In the drawings:

Figure 1 shows a schematic representation of a drain tap according to a first embodiment of the present invention when the cistern is not full.

Figure 2 shows a schematic representation of the drain valve according to Figure 1 when the tank is full.

Figure 3 shows a schematic representation of the drain fitting according to figure 1 when the total quantity control unit is activated.

Figure 4 shows a schematic representation of the drain fitting according to figure 1 when the partial quantity control unit is activated.

Figure 5 shows a schematic representation of a drain tap according to a second embodiment of the present invention when the cistern is not full.

Figure 6 shows a schematic representation of the drain tap according to figure 5 when the cistern is full.

Figure 7 shows a schematic representation of the drain fitting according to Figure 5 when the total quantity control unit is activated.

Figure 8 shows a schematic representation of the drain fitting according to Figure 5 when the partial quantity control unit is activated.

Figure 9 shows a schematic representation of a drain tap according to a third embodiment of the present invention when the cistern is not full.

Figure 10 shows a schematic representation of the drain tap according to figure 9 when the cistern is full.

Figure 11 shows a schematic representation of the drain fitting according to Figure 9 when the total quantity control unit is activated.

Figure 12 shows a schematic representation of the drain fitting according to Figure 9 when the partial quantity control unit is activated.

DESCRIPTION OF PREFERRED EMBODIMENTS

Figures 1 to 12 show three different embodiments of a drain fitting 1 according to the invention. All three embodiments operate essentially on the same principle, so that some of the elements are configured differently between the individual embodiments. The equal parts are provided in this case with the same reference signs.

The drain faucet 1 serves to control the intake of washing water from a cistern for washing a toilet and / or urinal. The discharge fitting 1 comprises a valve body 2 with a sealing element 4 collaborating with a valve seat 3, wherein the valve body 2 is movable with the sealing element 4 from the valve seat 3 along of an axis of movement B from a rest position to a washing position and from the washing position to the rest position. Furthermore, the discharge fitting 1 comprises a total quantity control unit 5 for controlling a total quantity wash and a partial quantity control unit 6 for controlling a partial quantity wash. The discharge fitting 1 furthermore has a retaining pawl 7, which can be brought into engagement with the valve body 2 when the latter is in the washing position and retains it in the washing position. The detent pawl 7 therefore holds the valve body 2 in the flushing position. The engagement between the retaining pawl 7 and the valve body 2 can be canceled through the control units 5, 6, so that the valve body 2 can be moved back from the flushing position to the starting position. repose.

The total quantity control unit 5 and the partial quantity control unit 6 are movable relative to the retaining pawl 7 and cooperate with it. In the first embodiment, the total quantity control unit 6 cooperates indirectly through the total quantity control unit 5 with the retaining pawl 7. In the second and third embodiments, the unit The partial quantity control unit 6 cooperates directly with the retaining pawl 7. Therefore, parts of the partial quantity control unit 6 act directly on the retaining pawl 7.

At least one of the control units 5, 6 is in contact with the retaining pawl 7 when the tank is full. The retaining pawl 7 is supported by means of this control unit 5, 6 with a bearing force S in this case in such a way that it is pressed against the valve body 2 and thus a retaining connection can be established with the valve body 2 in the flushing position, so that the valve body 2 is held in the flushing position by means of a retaining pawl 7. This is shown in Figures 2, 6 and 10. When reaches a water level provided for the corresponding wash, said support action or the support force S ceases, so that the retention connection between the valve body 2 and the retention pawl 7 and the valve body is canceled 2 moves from the wash position to the rest position.

The partial quantity control unit 6 and also the total quantity control unit 7 can be configured in such a way that when a specified water level for the relevant partial quantity is reached, a mechanical closing force F can be set up. on the retaining pawl 7, so that the retaining pawl moves out of the valve body 2. The closing force F acts in this case with an assisting effect on the movement from the washing position to the rest position . The closing force F can be applied in this case directly or, instead, indirectly on the retaining pawl 7, as then described in detail below with the aid of the specific embodiments.

In a particularly preferred manner, that control unit 5, 6, which is seated in the retaining pawl 7, comprises a support body 8. The support body 8 undergoes a lift when the tank is full and through this support it is prepared said support force S. In Figures 2, 6 and 10, the total quantity control unit 5 comprises the support body 8.

Furthermore, the control unit 5, 6 that supports the retaining pawl 7 comprises a support element 9, which supports the retaining pawl 7 in a corresponding manner during the support of the support body 8. By means of this support element 9 the bearing force S is applied to the retaining ratchet pawl 7. In the event that the bearing of the bearing body is now canceled, then the bearing element 9 is preferably moved in linear motion in the direction of the bearing seat. the valve 3 and the support force S, which acted on the retaining pawl 7. The support action then ceases.

Preferably, in all embodiments, the retention pawl 7 has a retention arm 10 and an activation arm 12. The retention arm 10 and the activation arm 12 are preferably at an angle of approximately 90 ° between yes.

The retaining arm 10 serves to cooperate with the valve body 2. Preferably, the retaining arm 10 also has a latching element 11, which cooperates with a stop element 13 on the valve body 2. With The locking element 11 and the stopper element 13 can be prepared said retaining joint between the valve body 2 and the retaining pawl 7.

The activation arm 12 essentially serves to cooperate with the control units 5, 6. The activation arm 12 is connected, for example, with the support element 9. Furthermore, the control units 5, 6 can apply said force latch F through activation arm 12 onto detent pawl 7.

The retaining pawl 7 'has a pivot point D between the retaining arm 10 and the actuating arm 12, over which the retaining pawl 7 is movable out of the valve body 2 or towards the valve body 2. The pivot point D is in this case fixed relative to the valve seat 3. This means that the pivot point D of the retaining pawl 7 does not move relative to the valve seat 3.

In a particularly preferred manner, the support body 8 is an element of the total quantity control unit 5. The total quantity control unit 5 preferably has a bar 14, in which the support body 8 is housed mobile. By means of this mobility between the bar 14 and the support body 8, the desired level can be determined for the cancellation of the retaining connection between the retaining pawl 7 and the valve body 2. In this way, it can also be adjusted the level for the desired wash correspondingly, here for the full amount wash. The support element 9 is fixedly connected to the bar 14. The bar 14 itself is preferably movably housed in a guide 15, which extends parallel to the direction of movement B of the valve body 2. The guide 15 is limited in its length and allows a movement of the bar 14 within the limited length.

In all embodiments exactly a single retaining pawl 7 is present, in which the total quantity control unit 5 as well as such a partial quantity control unit 6 directly or indirectly on the retaining pawl 7.

The total quantity control unit 5 preferably has a fork section 16, into which parts of the retaining pawl 7, preferably the actuating arm 12, engage. The fork section 16 here serves for the transmission of the supporting force or the bearing force on the retaining pawl 7 and, furthermore, by means of the fork section 16, the closing force F can also be applied to the retaining pawl 7. The fork section 16 It comprises the bearing element F, which supports the retention pawl 7 from below, and an activation section 21, which can apply a closing force F from above on the retention pawl 7.

With the aid of Figures 1 to 4, elements of the first embodiment of the drain tap 1 are now explained in detail. According to the first embodiment in Figures 1 to 4, exclusively the control unit of the total quantity 5 is in contact with the retaining pawl 7. The partial quantity control unit 6 acts, in the case of a partial quantity wash, on the total quantity control unit 5, so that the It can transmit the closing force F of the partial quantity control unit 6 on the total quantity control unit 5 and thus on the retaining pawl 7.

Figure 2 shows the drain tap 1 shortly before the flushing activation when the tank is full. The level of the washing water is indicated by A. The retaining pawl 7 is pressed in this case by the support element 9 of the total quantity control unit 5 through the action of the support body 8 against the body. valve 2.

In the case of full quantity washing, shown in figure 7, the valve body 2 is raised directly and establishes said retention joint with the retention pawl 7. In this case, the water can flow through a interspace 22 between the sealing element 4 and the valve seat 3. The partial quantity control unit 6 is not activated in the case of activation of the total quantity control unit. By virtue of the support of the support body 8, the support element 9 of the control unit of the total quantity 5 acts on the retaining pawl 7. As soon as now the water level has dropped to the level VM, the support of the support body 8 disappears and the total quantity control unit 5 moves downwards, so that said support force S on the retaining pawl 7 then disappears and the retaining pawl moves out of the retaining body. valve 2. With support effect and optionally, the total quantity control unit 6 in this embodiment drives the latching pawl 7 with the fork section 16 with a corresponding closing force F, so that the movement of the retention pawl 7 is supported outside the valve body 2. By virtue of the cancellation of the retention joint between the detent ratchet 7 and valve body 2 moves valve body 2 back to the home position. The tank is filled again and the total quantity control unit 5 is raised again, so that the retaining pawl 7 moves again against the valve seat 3 and the position shown in figure 2 is adopted. .

In the case of the total quantity control, the partial quantity control unit 6 is not activated. In this embodiment, the partial quantity control unit 6 has a switching member 17, with which it is possible to connect the partial quantity control unit 6 with the total quantity control unit 7. In the case of the total quantity control, the switching member 17 does not move, thus the control unit is not connected of the partial quantity 6 with the total quantity control unit 5, whereby the partial quantity control unit 6 remains in the rest position during washing with the total quantity.

Figure 4 shows the partial amount washing. In this case, the partial quantity control unit 6 is activated and at the same time via a stop 23 the valve body 2 moves upwards. The partial quantity control unit 6 surrounds the valve body 2, for example, with a sleeve, which cooperates with the stop 23. Furthermore, through the switching member 17, which preferably comprises a retaining pawl 18 , a temporary connection is prepared between the total quantity control unit 5 and the partial quantity control unit 6. The retaining pawl 18 is connected in this case with the total quantity control unit 5, in particular with the bar 14 of the total quantity control unit 5. As soon as the water is now lowered to the TM level, the weight force of the partial quantity control unit 6 is activated, which is then transmitted through of the switching member 17 on the total quantity control unit 5. Particularly preferably, the partial quantity control unit 6 comprises a water chamber 24, which is filled with water and thus a force is prepared corresponding weight. Via the switching member 17, a closing force F is transmitted from the partial quantity control unit 6 to the total quantity control unit 5. The closing force F is greater than the supporting force or the supporting force of the total quantity control unit 5, so that it is pressed downwards. In this way, the support action of the support element 9 on the retaining pawl 7 disappears, canceling the retaining connection between the valve body 2 and the retaining pawl 7. Additionally, through the control unit of the total amount 5 can also still act a closing force F on the retaining pawl 7, for example through the fork section 16.

The water chamber 24 is here in movable connection with a rod 34. The rod 34 can be moved along the activation axis B. Through the relative mobility between the water chamber 24 and the rod 34 the relevant level for partial quantity washing.

Figures 5 to 8 show a second embodiment of the drain fitting 1 according to the present invention. The equal parts are provided in this case with the same reference signs. With regard to these parts, reference is made here to the description.

The total quantity control unit 5 also has in this embodiment a support element 9 and a corresponding support body 8, with which the support element 9 acts on the retention arm 10 of the retention pawl 7, so that the retaining pawl 7 is pressed against the valve body 2. The activation of a full quantity wash is carried out essentially in the same way as the first embodiment. As soon as the water level in the tank has reached a water level VM intended for washing the entire quantity, the support of the support body 8 drops and the support element 9 moves out of the retention arm 10. The Bearing force on the detent pawl 7 thus falls and the detent pawl 7 releases the temporary detent joint between the valve body 2 and the detent pawl 7 in a corresponding manner. The valve body 2 can therefore be moved from the flushing position to the rest position. Furthermore, a closing force F can act from the total quantity control unit 5 on the retaining pawl 7, as described above.

Figure 8 shows the partial amount washing. In this case, the partial quantity control unit 6 is activated and at the same time the valve body 2 is moved upwards through a stop 23. The partial quantity control unit 6 surrounds the valve body 2, for example with a sleeve, which cooperates with the stop 23. Through a switching member 19, which is part of the partial quantity control unit 6 a contact is made between the retaining pawl 7 and the partial quantity control unit 6. Through this contact the partial quantity control unit 6 is supported on the retaining pawl 7. The bearing force of the support body 8, which acts as a support force, is in this case greater than the actuation weight force of the partial quantity control unit 6, provided that the partial quantity control unit 6 is located in the Water. As soon as a planned water level TM for the partial quantity is now reached, the total weight force of the partial quantity control unit 6 is activated. This weight force is greater than the bearing force. The switching member 19 moves forward against the retaining pawl 7 and prepares a corresponding closing force F directly on the retaining pawl 7. This closing force F must in this case be greater than the supporting force of the unit quantity control total, so that the detent pawl moves against the supporting action of the control unit of the total quantity 5 out of the valve body 2, so that the temporary detent joint between the detent pawl is canceled 7 and the valve body 2 correspondingly and the valve body 2 can be returned to the rest position.

The weight force is conditioned in this embodiment preferably through a water chamber 24, which is movable along a bar 34.

In the preferred variant shown in figure 8 of the second embodiment, the partial quantity control unit 5 comprises a switching member in the form of a switching bar 20, which can be brought into contact with a surface 32 arranged inclined with respect to the direction of movement in the ratchet. The retaining pawl 7 also has an inclined surface 32, which is here on a bar 33 that is fixedly connected with the retaining pawl 7 - When the water level provided for the partial quantity is reached, it moves through of the effective weight of the partial quantity control unit the retaining pawl 7 on the inclined surface outside the valve tube 2. Consequently, the retaining connection between the retaining pawl 7 and the tube is thus canceled. valve 2. Therefore, in this preferred variant, not only is a weight force exerted on the retaining pawl 7 via the partial quantity control unit 6, but the retaining pawl 7 is also pressed actively out of the valve body 2.

In FIGS. 9 to 12 a third embodiment of the discharge fitting 1 is shown. The total quantity control unit 5 is in this case essentially identical to the total quantity control unit 5 of the second form of realization. It refers to the description above.

The partial quantity control unit 6 is configured similarly to the second embodiment. Additionally, the partial quantity control unit 6 comprises a support body 35, which drives the partial quantity control unit 6 with a lift when the tank is full. The partial quantity control unit 6 furthermore has a switching element 19, which additionally has a spring pawl 25. In the rest position or in the case of full quantity washing, the switching element is clamped with the spring pawl 25. In this way the part quantity control unit 6 is held against the bearing force in the rest position. As soon as the rinsing of the partial quantity is now started, the holding connection is canceled by the lifting of the partial quantity control unit 6 and the partial quantity control unit 6 is activated. the support of the suspension body will remain above the partial quantity control unit 6. When the water level TM set for the partial quantity is reached, the lift of the partial quantity control unit 6. drops and the Partial quantity control 6 is moved in the direction of the retaining pawl 7, whereby the latter moves in a similar manner to the second embodiment out of the valve body. At the same time, the described retention connection is restored.

With respect to all the three embodiments according to Figures 1 to 12, it should also be noted that the drain fitting 1 preferably comprises a housing, which can be fixedly connected to the cistern. In the housing in this case the valve body can be moved along a longitudinal movement. In the same way, the control units 5, 6 can be moved along a longitudinal movement. The retaining pawl 7 is pivotable about a fixed pivot point D relative to the housing.

Furthermore, the discharge fitting 1 comprises a damping element 28 which is connected or can be brought into connection with the valve body 2. The damping element bears the reference sign 28 in the figures. The damping element 28 can be configured of a different type. But in a particularly preferred way, the damping element damps the movement of the valve body 2 in the event of a movement from the washing position to the rest position.

In the first embodiment, the damping element is in the form of a plate. But it can also be configured according to the second and third embodiments.

In the second and third embodiments, the damping element has a support body 29, which conditions a support force. As soon as the valve body 2 is now moved to the flushing position, the damping element 28 moves upward and is supported by a support arm 30 integrally formed in the valve body 2. As soon as has canceled the temporary engagement between the retaining pawl 7 and the valve body 2, a connection between the damping element 28 and the valve body 2 is arranged through the support arm, so that its movement by virtue of lift in the direction of the valve body.

Preferably, the discharge fitting 1 has an activation device not shown here. The activation device acts directly on the valve body 2 during the flushing of the total quantity. The valve body 2 has at its upper end a receiving hole 31, into which the actuating device can fit in a corresponding manner. In the case of partial quantity flushing, the actuating device acts on the valve body 2 via the partial quantity control unit 6. In the case of actuation, the flow control unit is raised correspondingly. the partial quantity 6 and at the same time raises the valve body 2.

With regard to the movements, it should be noted that the partial quantity control unit 6 and also the total quantity control unit 5 move essentially parallel to the movement of the valve body.

LIST OF REFERENCE SIGNS

1 Drain mixer

2 Valve body

3 Valve seat

4 Sealing element

5 Total quantity control unit

6 Part quantity control unit

7 Retaining pawl

8 Support body

9 Support element

10 Retaining arm

11 Lace element

12 Activation arm

13 Stopper element

14 Bar

15 Guide

16 Fork section

17 Switching body

18 Switching ratchet

19 TM switching body

20 Switch bar

21 Activation section

22 Intermediate space

23 Stopper

24 Water Chamber

25 Spring ratchet

26 Switch bar

28 Support body

29 Support body

30 Damping element

31 Housing hole

32 Inclined surface

33 Bar

34 Bar

35 Support body

A Wash water level when the tank is full

D Pivot point

VM Water level with total quantity

TM Water level with partial quantity

Claims (14)

1. Discharge taps (1) for a cistern, comprising a valve body (2) with a sealing element (4) that collaborates with a valve seat (3), in which the valve body (2) it is movable with the sealing element (4) from the valve seat (3) along an axis of movement (B) from a rest position to the wash position and from the wash position to the rest position , a total quantity control unit (5) for controlling a partial quantity wash, and a retention pawl (7), which can be brought into engagement with the valve body (2), when the latter is in the wash position, and holds it in the wash position, in which the total quantity control unit (5) and the partial quantity control unit (6) are movable with respect to the retaining pawl (7) and collaborate with it, in which at least one of the control units (5, 6) is in contact with the retaining pawl ( 7) at least when the tank is full, in which the retaining pawl (7) is supported through this control unit (5, 6) with a supporting force, in such a way that it is pressed against the body of the valve (2) and establishes a retention joint with the valve body (2) in the wash position, and in which when a predicted water level is reached, said support action is suppressed, thereby cancels the retention joint between the valve body (2) and the retention pawl (7), so that the valve body (2) is movable from the washing position to the rest position, characterized in that it is has exactly a single retaining pawl (7) configured separately from the total quantity control unit (5) and from the partial quantity control unit (6), and because exclusively the total quantity control unit ( 5) is in contact with the retaining pawl (7). in which the partial quantity control unit (6) can be temporarily connected during a partial quantity wash with the total quantity control unit (5) via a switching member (17), so The partial quantity control unit (6) acts through the total quantity control unit (5) on the retaining pawl (7). Drain fitting according to claim 1, characterized in that the partial quantity control unit (5) conditions a closing force (F) on the retaining pawl when a water level provided for the partial quantity is reached (7) and / or because the total quantity control unit (6) conditions, when a water level provided for the total quantity is reached, a closing force (F) on the retaining pawl (7), with which force closing (F) supports suppressing the supporting action. Drain fitting according to one of the preceding claims, characterized in that the control unit (5, 6) supporting the retaining pawl (7) comprises a suspension body (8), which experiences a suspension when the cistern it is full, and a support element (9), which supports the retention pawl (7) during suspension. Discharge fitting according to one of the preceding claims, characterized in that the retaining pawl (7) has a retaining arm (10) I with an engaging element (11) and an actuating arm, in which the The body of the valve has a stop element (13) that fits with the fitting element (11) and in which the activation arm (12) collaborates with the control unit. 5. Discharge fitting according to claim 4, characterized in that the retaining pawl (7) has a pivot point (D) between the retaining arm (10) and the activation arm (12), around which it is You can move the detent pawl (7) out of the valve body (2) or into the valve body (2), where the pivot point (D) is fixed relative to the valve seat ( 3). Discharge fitting according to one of the preceding claims, characterized in that the support body (8) is connected to a bar (14) and is movable along this bar (14), and that the support element (9) is fixedly connected to the bar (14), in which the bar (14) is movably housed in a guide (15), the guide (15) of which extends parallel to the direction of movement (B) of the body of the valve (2). Discharge fitting according to one of the preceding claims, characterized in that the total quantity control unit (5) comprises a fork section (16), into which parts of the retaining pawl (7) engage, with preferably the activation arm (12), in which a supporting force and, if necessary, the closing force can be applied to the retaining pawl (7) via the fork section (16). Flush fitting according to one of the preceding claims, characterized in that the switching element (17) is a switching pawl (18), which can preferably be connected to the rod (14) of the control unit the total amount (5), Drain fitting according to one of the preceding claims, characterized in that the total quantity control unit comprises a switching member (19), which in the case of partial washing acts on the retaining pawl and conditions a force closure on the retaining pawl (7), in which the switching member can be brought into engagement with the retaining pawl during activation. 10. Drain fitting according to claim 9, characterized in that said support force of the control unit for the total quantity supports the control unit for the partial quantity until the water level set for the partial quantity is reached, wherein said closing force then acts on the retaining pawl and cancels the retaining joint. Drain fitting according to claim 9 or 10, characterized in that the switching member (17) is a switching bar (20), which can be brought into contact with a surface of the pawl which is arranged inclined relative to the direction of movement and in which when the intended water level for the partial quantity is reached, through the effective weight of the partial quantity control unit the ratchet moves on the inclined surface outside the valve tube. Discharge fitting according to claim 9 or 10, characterized in that the partial quantity control unit (6) has a support body and is held in a position in the rest position by means of a spring ratchet. lower, in which when the partial quantity control unit (6) is activated, the holding joint is canceled and the partial quantity control unit moves through the support body to a higher position, in which the partial quantity control unit moves when the support action is suppressed to the lower position and acts there with the switching member on the retaining pawl (7). Drain valve according to one of the preceding claims, characterized in that the drain valve (1) further comprises a housing, which can be fixedly connected to the cistern, in which the body is movably mounted in the housing valve (2), in which the detent pawl (7) is pivotable around a fixed pivot point (D) with respect to the casing, in which parts of the total quantity control unit (6) and parts of the partial quantity control unit (7) are movable with respect to the housing along the direction of movement of the valve body (2), in which said parts are in particular the actuating elements (17, 20) with the activation bars (23, 24) and in which said parts are guided in the housing. Discharge valve according to one of the preceding claims, characterized in that the discharge valve (1) again comprises a damping element which is connected or can be connected to the valve body.