EP1195475B1 - Flushing device for a WC-cistern - Google Patents

Abstract

The fitting (1) has a valve (4) with a valve body (5) that has lower (9) and upper (10) float bodies arranged in a float casing (8) inside a cistern (2). The valve body is supported only by the lower float body during the partial flush and by both float bodies during a total flush. During the partial flush, the lower float body is held fixed in the float casing by the force of a magnetic counter bearing (14). A carrier is provided at the valve body, which is raised by a larger stroke of the valve body to lift the lower float body for the total flush against the force of the magnetic counter bearing.

Description

The invention relates to a drain fitting for a toilet cistern, with a liftable for a partial or full flush valve body of a drain valve, with a arranged in a float housing within the cistern lower buoyancy body, which is prevented during the partial flushing at a lift, and with an upper Buoyancy, wherein the valve body is supported in the full flush on at least the lower buoyant body and the partial flush only on the upper buoyant body and wherein the lower buoyant body is held stationary during the partial flush by particular magnetic holding force in the float housing, wherein for the full flush on the valve body a driver is provided, which stands out at a larger stroke of the valve body than that required in the partial flush the lower buoyant body of its magnetic thrust bearing against the action of the magnetic force.

Such a toilet cistern has become known for example from DE 197 30 271 C1.

With the toilet cistern known from DE 197 30 271 C1 either a full flush or a partial flush can be triggered. To trigger a purge designed as an overflow pipe valve body is raised, whereby a bottom valve is opened in the cistern. When partial flushing a lower float is prevented from buoyancy and the valve body supported only on an upper float, so that according to the decreasing due to the sinking water level in the cistern buoyancy of the upper float of the valve body also drops down and finally closes the bottom valve. So only a part of the amount of water in the cistern can drain. By contrast, in the full flush and the floating of the lower float is possible, so that after lifting the valve body remains raised during the full flush by the buoyancy of the lower buoyant body and the water can flow through the bottom valve. If the lower float is no longer buoyant after emptying its float housing, the valve body has also fallen down accordingly and the bottom valve is closed. To trigger the partial and full flush two independent actuating mechanisms for lifting the lower or upper float are provided, wherein a first actuator for the partial flush acts on the valve body and engages a second actuator for the full flush via a driver basket on the lower float.

The present invention is based on the object to simplify the operation in a drain fitting of the type mentioned.

This object is achieved according to the invention in that at least one projection is provided on the lower buoyancy body, which protrudes downward through the bottom of the float housing in the direction of the driver.

The advantage achieved by the invention is that only the valve body is raised to trigger the full and partial flushes and depending on the lifting height, the full or partial flush is triggered. In addition, only a single actuator acting on the valve body is required. Since fewer items are needed, the assembly of the drain fitting according to the invention simplifies ebenfälls.

Preferably, two independently triggerable actuation mechanisms for the full and the partial flush are provided, the respective attack lever are rotationally coupled movement with the actuating lever. The attack levers can be arranged parallel to each other.

It is advantageous if each actuating mechanism has at least one lever arm and at least one connecting strut articulated therewith, which is connected in an articulated manner to the engagement lever. By this arrangement, a deflection of a horizontal actuation of the lever arms by means of a front mounted on the cistern button and a deflection of a vertical actuation by means of a button attached to the cistern above in an upward movement of the actuating lever can be realized with the same actuator. In this case, the force and the distance traveled by the button way or deflection for an operation from the front and from above is about the same.

It is particularly advantageous if the lever arms are directed at a closed drain valve approximately at 45 ° obliquely downward. Then, the lever arms can be operated either in the horizontal direction of pressure via a front access opening in the cistern or operated in the vertical direction of pressure via a top of the cistern arranged inspection opening. This allows for the same leverage, the arrangement of the push buttons either on the front or top of the cistern.

Preferably, the actuating lever and the lever arms of the two actuating mechanisms are each rotatably mounted on a bearing block, wherein each actuating mechanism in each case by a standing over a push rod in operative connection Button is actuated from the outside. The bearing block with the two actuating mechanisms is a unit that can be removed as a part of the cistern. Should the mechanics of the actuation mechanisms be defective, a simple exchange can thus take place.

Preferably, each actuating mechanism has a sleeve radially spaced from the pivot axis of the actuating lever for receiving the push rod. In order to align the push rods horizontally or vertically, the sleeves are rotatably mounted parallel to the pivot axis of the actuating lever, wherein the point of application for the user-initiated force remains unchanged. The push rods may e.g. be clipped into the sleeves in different positions. This allows the same components, i. Revision plate, push rods and actuation mechanisms for different deep or high cisterns are used.

Further advantages of the invention will become apparent from the description and the drawings. Likewise, according to the invention, the above-mentioned features and those which are still further developed can each be used individually for themselves or for a plurality of combinations of any kind. The embodiments shown and described are not to be understood as exhaustive enumeration, but rather have exemplary character for the description of the invention.

Fig. 1

eine schematische Seitenansicht einer teilweise aufgeschnittenen erfindungsgemäßen Ablaufarmatur, die in einen WC-Spülkasten eingebaut ist, mit geschlossenem Ablaufventil;

Fig. 2

die Ablaufarmatur der Fig. 1 mit für eine Vollspülung geöffnetem Ablaufventil; und

Fig. 3

die Ablaufarmatur der Fig. 1 mit für eine Teilspülung geöffneten Ablaufventil; und

Fig. 4

eine Betätigungseinrichtung zum Auslösen der Ablaufgarnitur für die Teil- oder die Vollspülung.

The invention is shown in a highly schematic manner in the drawing and will be explained in more detail with reference to embodiments. It shows:

Fig. 1

a schematic side view of a partially cut-open inventive drain fitting, which is installed in a toilet cistern, with a closed drain valve;

Fig. 2

the drain fitting of Figure 1 with opened for a full flush drain valve. and

Fig. 3

the drain fitting of Figure 1 with opened for a partial flushing drain valve. and

Fig. 4

an actuator for triggering the waste set for partial or full flush.

The designated in Fig. 1 with 1 drain fitting is installed in a toilet cistern 2 and has a the discharge opening 3 of the cistern 2 occlusive or releasing drain valve 4 . The valve body 5 of the drain valve 4 forms a vertically aligned overflow pipe, at the lower end of which is a cooperating with a valve seat 6 of the cistern 2 sealing washer 7 is located. By acting on the sealing washer 7 water pressure, the drain valve 4 remains closed.

The valve body 5 extends through an upwardly open cup-shaped float housing 8 upwards, which is fixed in the cistern 2 in a manner not shown in detail (for example via a bayonet connection on Spülkastenboden). Around the valve body 5 around a lower buoyancy body 9 and above this an upper buoyancy body 10 are provided. The lower buoyant body 9 is located within the float housing 8, while the upper buoyant body 10 only partially protrudes into the float housing 8. In other embodiments, the upper buoyant body 10 may also be located above the float housing 8. The valve body 5 is continuously supported on the upper buoyant body 10 by means of a hold-down device 11 , while it rests on the lower buoyancy body 9 with the aid of a contact disk 12 only when the drainage valve is closed (FIG. 1) and during the full flushing (FIG. 2). For this purpose, the lower buoyant body 9 on the valve body 5 slidably guided between its stationary held lower and its the Ventilkörper.5 supporting upper layer.

In the illustrated in Fig. 1 closed starting position of the drain fitting 1, the lower buoyancy body 9 is held by magnetic force in the float housing 8 stationary. For this purpose, arranged on the bottom 13 of the float housing 8 arranged parts 14 and arranged below the lower buoyancy body 9 parts 15 together magnetically together. The magnetic holding force of the parts 14 and 15 is greater than the sum of the buoyancy forces of the two buoyancy bodies 9, 10. At the bottom of the lower buoyant body 9, two projections 16 are provided by openings in the bottom 13 of the float housing 8 in the direction of one for the Gasket 7 provided contact surface 17 of the valve body 5 protrude.

In the case of full flushing (FIG. 2) , the valve body 5 is lifted on a tab 18 by means of a suitable actuating device until it rests against the underside of the float housing 8 with its contact surface 17. In this lifting movement, the contact surface 17 takes the projections 16 and thus the lower buoyancy body 9 upwards, whereby the lower buoyancy body 9 of its magnetic abutment 14 is lifted against the action of the magnetic force. After dissolved magnetic connection of the lower buoyancy body 9 drives until it rests against the contact disk 12 and holds due to its buoyancy in the water of the float housing 8 raised over the contact disk 12 resting valve body 5. The existing water in the cistern 2 can flow through the outlet opening 3. At the latest when the water in the cistern 2 (eg 9 liters) has completely flowed out of the cistern 2, the water still in the float housing 8 flows through discharge openings 19 from the float housing 8, so that the water level in the float housing 8 begins to decline. Thus, the lower buoyancy body 9 and the valve body 5 supported on it lower, until the drain valve 4 closes when the valve body 5 is completely lowered. At least now, the magnetic holding force acts, and the lower buoyancy body 9 is again magnetically connected to the float housing 8.

To actuate the partial flush (Fig. 3) , the valve body 5 is lifted on the tab 18 by means of the actuator only so far that the projections 16 are not taken up. The drain valve 4 is opened, and the water level 20 in the cistern 2 begins to decrease. Since the magnetic holding force of the parts 14 and 15 is greater than the buoyancy force of the lower buoyant body 9, this is further held stationary in the float housing 8 in its lower position and thus put out of action. That is, the lower buoyancy body 9 is prevented from buoyancy and does not support the lifted valve body 5, which is now held only by the buoyancy force of the upper buoyant body 10 in its raised position opening the drain valve 4. Reached the sinking Water level 20 in the cistern 2 the upper buoyancy body 10, so this floats on the water and lowers with the further decreasing water level. Correspondingly, the valve body 5 supported by the hold-down 11 on the upper buoyant body 10 also lowers until it closes the drain valve 4. The water level still prevailing in the float housing 8 is designated 20 ' in FIG. 3 and defines the amount of water that has flowed away for the partial flushing.

The actuator 21 shown in Fig. 4 comprises a bearing block 22 which is fastened to the inside of the rear wall of the cistern. On the bearing block 22, a first actuating mechanism 23 for triggering the full flush and a second actuating mechanism 24 for triggering the partial flush are provided in parallel side by side. At the lower end, the bearing block 22 has two receptacles 25, 26 , in which a pivot axis 27 is mounted. Between the receptacles 25, 26 carries the pivot axis 27 an actuating lever 28 with an upwardly open receptacle 29 at its free end, in which the valve body 5 is hooked with its tab 18. On both sides of each receptacle 25, 26 are connected to the pivot axis 27 each two parallel attack lever 30 and 31 rotatably connected. At the upper end, the bearing block 22 has two receptacles 32, 33 , in which bearing pins 34, 35 are rotatably mounted. On both sides of each receptacle 32, 33 are respectively rotatably connected to the respective bearing pin 34, 35 two parallel lever arms 36 and 37 , which together with their respective bearing pin 34, 35 each form an integral unit. At the lever arms 36, 37 are at 38 and 39, two connecting struts 40, 41 hinged, the other ends are hingedly connected to the free ends of the attack lever 30 and 31 respectively. Between the two lever arms 36 and 37 is at their free ends respectively at 42 and 39 a Sleeve 43, 44 rotatably mounted, in which a horizontally oriented push rod 45, 46 is received. The hinge points 42, 39 are each equidistant from the bearing pins 34, 35 spaced. Associated with each actuating mechanism 23, 24 is an externally actuable pushbutton (not shown) which is in operative connection with the respective push rod 45, 46. By pressing the respective push button, the corresponding push rod 45 and 46 is moved in the horizontal pressure direction 47 , whereby the corresponding pair of lever arms 36 and 37 is pivoted downwards. This pivoting is transmitted via the connecting strut pair 40 and 41 on the attack lever pair 30 and 31 and thus on the pivot axis 27, whereby the actuating lever 28 is pivoted up, depending on the pivot angle, the partial or full flush is triggered. Since the push rod 45 is moved by its push button in the direction of pressure 47 further than the push rod 46 by the other push button, the actuating lever 28 is further pivoted up by the first actuating mechanism 23 and therefore triggered the full flush.

About the lever length of the attack lever 30, 31 and the distance between the hinge points 42, 39 of the connecting struts 40, 41 of the bearing pin 34 and 35, the leverage ratios and thus the respective pressing forces required for pressing the push buttons and thus for the full and partial flushes adjust. In the illustrated embodiment, the engagement lever 30 is shorter than the engagement lever 31, and the connecting strut 40 closer to the bearing pin 34 hinged as the connecting strut 41 on the bearing pin 35th

Instead of different displacement paths of the push buttons, it is also possible to achieve the same displacement paths of the push buttons on different leverage ratios with the two actuating mechanisms different pivot angle. Also, two actuating mechanisms are possible with different displacement paths and different lever ratios to Ereichen different swivel angle.

The lever arms 36, 37 are in the closed starting position of the drain fitting 1 (Fig. 1) directed at 45 ° obliquely downward, so that the sleeves 43, 44 and the push rods 45, 46 either, as shown in Fig. 4, aligned horizontally and can be actuated in the horizontal direction of pressure 47 via a front inspection opening in the cistern 2 or vertically aligned and can be operated in the vertical printing direction via a top of the cistern 2 arranged inspection opening. This allows for the same leverage ratios, the arrangement of the push buttons either on the front or top of the cistern. 2

Claims (11)

1. Flushing device (1) for a WC-cistern (2), with a valve body (5) of a discharge valve (4), which body can be lifted for partial or full flushing, with a lower float (9) which is arranged in a float housing (8) inside the cistern (2) and is prevented from floating up during partial flushing, and with an upper float (10), the valve body (5) being supported on at least the lower float (9) when full flushing takes place and on only the upper float (10) when partial flushing takes place, and the lower float (9) being retained in a stationary manner in the float housing (8) by magnetic retaining force during partial flushing, a driver being provided on the valve body (5) for full flushing, which driver lifts the lower float (9) off from its magnetic counter-bearing (14) counter to the action of the magnetic force when the travel of the valve body (5) is greater than that necessary when partial flushing takes place, characterized in that at least one projection (16), which projects downwards through the bottom (13) of the float housing (8) in the direction of the driver, is provided on the lower float (9) .
2. Flushing device according to Claim 1, characterized in that the driver is formed by a bearing surface (17) provided for the seal (7) of the discharge valve (4).
3. Flushing device according to one of the preceding claims, characterized in that the valve body (5) is supported in a hanging manner on an actuating lever (28) which can be pivoted up, and in that full flushing is assigned a greater pivoting angle of the actuating lever (28) than partial flushing is.
4. Flushing device according to Claim 3, characterized by two actuating mechanisms (23, 24) for full and partial flushing, which can be initiated independently of one another and the respective working levers (30, 31) of which are connected in a rotationally fixed manner to the actuating lever (28).
5. Flushing device according to Claim 4, characterized in that the working levers (30, 31) are arranged parallel next to one another.
6. Flushing device according to Claim 4 or 5, characterized in that each actuating mechanism (23; 24) comprises at least one lever arm (36; 37) and at least one connecting strut (40, 41) connected thereto in an articulated manner, which strut is connected in an articulated manner to the working lever (30; 31).
7. Flushing device according to Claim 6, characterized in that the lever arms (36, 37) are directed obliquely downwards at roughly 45° when the discharge valve (4) is closed.
8. Flushing device according to Claim 6 or 7, characterized in that the actuating lever (28) and the lever arms (36, 37) of the two actuating mechanisms (23, 24) are in each case mounted rotatably on a bearing bracket (22).
9. Flushing device according to one of Claims 4 to 8, characterized in that each actuating mechanism (23; 24) can be actuated from outside in each case by a button operationally connected via a push rod (45; 46).
10. Flushing device according to Claim 9, characterized in that each actuating mechanism (23; 24) comprises a sleeve (43; 44), spaced radially from the pivoting spindle (27) of the actuating lever (28), for receiving the push rod (45; 46).
11. Flushing device according to Claim 10, characterized in that the sleeve (43; 44) is mounted rotatably parallel to the pivoting spindle (27) of the actuating lever (28).

Images