WO2005066423A1

WO2005066423A1 - Closure device for a plumbing basin and use of a pushbutton for actuating a drain plug

Info

Publication number: WO2005066423A1
Application number: PCT/DE2005/000013
Authority: WO
Inventors: Dieter Küchenmeister
Original assignee: Kuechenmeister Dieter
Priority date: 2004-01-08
Filing date: 2005-01-06
Publication date: 2005-07-21
Also published as: DE102004035652A1; EP1751357A1; DE102004035652B4; TW200533812A

Abstract

In order to simplify a closure device for plumbing basins, the drain plug (2) of the device is designed so that it can move in an axial direction and can be held in an open position and in a closed position. To this end, the drain plug (2) is joined to the drain tube (1) via a pushbutton (3) placed inside the drain tube (1). The pushbutton is supported in a bridge-like structure inside the drain tube.

Description

Locking device for a sanitary basin and use of a push button to actuate a locking plug

Description:

The invention relates to a closure device for a sanitary basin and the use of a push button for actuating a closure plug. According to the invention, the application also relates to a push button.

Various locking systems are known for closing sanitary basins, for example hand wash basins, bathtubs, kitchen sinks, shower trays and other basins in the sanitary area: for example, these basins are closed with the aid of plugs to retain washing water. The plugs are attached to a string of pearls so that the plugs can be easily pulled out of the drain opening of a filled basin. The string of pearls is attached to the upper edge of the pool to keep it accessible.

However, it has turned out to be disadvantageous that these plugs are raised unintentionally, so that the water flows out of the basin when the string of pearls is in the way and is accidentally pulled out of the basin while being handled. Frequently such rip cords easily ^• or separated from their mounting points. If the plug is no longer attached to the string of pearls, it is easily lost. Finally, such plugs do not close the drain tightly enough.

In another closure variant, the stopper is loosely inserted into the drain socket of the basin and can be actuated via a linkage attached outside the basin. For this purpose, a vertical pushing movement on a lever in the rear upper area of the basin is translated into an upward or downward movement of the stopper, so that the stopper can be closed and opened again by this lever. This variant has also proven to be disadvantageous, since the stopper no longer securely closes the outlet connection if a rubber seal provided on the stopper is already partially worn out due to frequent use. In these cases, operators try to securely close the stopper by using more force on the lever and rod system. This often leads to the rods being bent or even breaking. In addition, the bushings necessary for the linkage inevitably result in slight leaks.

When used in public facilities, it is also disadvantageous in the abovementioned cases that the stopper can be stolen and the drain outlet that is then open may even be deliberately contaminated, so that the entire drainage system can become blocked. Finally, both the attachment of a stopper to a string of pearls and a closing mechanism according to the second type mentioned are aesthetically unsatisfactory.

The disadvantage of the linkage described above for actuating the stopper has been recognized, for example, in WO 94/15030 A1. There is a device for closing a drainage cup of a sanitary basin with a plunger is described, in which the plunger lies with its lower end located in the drainage cup against an upper element of a component, the lower element of which is fastened in the drainage cup, the two elements alternately engage by exerting pressure in a closed position in which they are pushed into one another or in an open position in which they are as far apart as possible from one another. Similar systems are also from DE 200 07 751 U1, DE 1 658 230 A, DE 27 22 585 A1, DE 101 48 336 A1, EP 0 288 731 B1, EP 0 342 819 B1, EP 1 338 707 A1, WO 97 / 35507 A1 and US 6,195,819 B1 known.

A disadvantage of these systems, however, is that contaminants can only be removed from the outlet connection with difficulty. The present invention is therefore based on the object of finding a closure device which does not have the aforementioned disadvantages and which is in particular easy to use without there being any leaks in the drain system. Furthermore, the closure device should always securely close the drain connection in the basin after a long period of operation without water running out of the basin. In addition, an aesthetically demanding solution is to be found that is easy to use and robust in operation.

This problem is solved by the closure device according to claim 1 and the use of a push button for actuating a closure plug according to claim 22. Preferred embodiments of the invention are specified in the subclaims.

The closure device is for sanitary basins with an outlet connection and a closure plug arranged therein for the manual closure of a basin, for example a hand wash basin, a bathtub _. Kitchen sink with one or more basins or a shower tray or another basin in the sanitary area. According to the invention, the sealing plug is movable in the axial direction and can be latched in an open position and in a closed position. It is therefore a push button lock. In the open position, the sealing plug preferably engages in such a way that its closing level is arranged above the drain edge of the drain socket. A sufficient distance of the

Closing edge of the stopper to the drain edge of the drain socket are set so that the water can drain away quickly enough.

The sealing plug is supported in a bridge-like construction in the drain socket, preferably on the inner wall. The sealing plug is thus stationary in the area of the drain socket and does not have to be manually removed from this area for the opening or closing process. For closing, the stopper is pressed onto the closing edge of the drain socket or pressed into the drain pipe, for example by hand or foot, and snaps into place, preferably under spring force, so that the drain socket is securely closed against escaping water. To open it again, the connecting piece is brought into a raised position, for example by re-applying axial force to the stopper, so that the stopper is brought into an open position from the latched position and latches there.

In contrast to the known closure devices with a stopper on a string of pearls, the stopper therefore remains in the closing area of the drain connector, so that the learners encountered in the known devices cannot occur. Furthermore, the closure device according to the invention has the advantage over the closure devices with a stopper, which can be actuated via a linkage, that no feedthroughs for the linkage in the drainage system are necessary and thus potential leaks in the drainage system cannot occur. In addition, the device according to the invention is also superior to this known one in that mechanical defects which can be attributed to the mostly unstable actuating linkage do not occur here. The two locking positions of the stopper in the closed position and in the open position ensure a very solid and durable design, which can also be used advantageously, for example, in the professional field, in particular in canteen kitchens. It is also favorable that the closure device can be actuated very simply with the foot when used to close the water drain on a shower base. Finally, a further advantage of the closure device according to the invention is that the height of the closure plug above the drain edge of the drain socket can be set so low in the open position with a suitable setting that contaminants and in particular pieces of jewelry, such as rings, cannot be run can reach. The closure device according to the invention also has a low overall height, so that it can advantageously be installed on bathtubs and shower trays.

The closure device preferably has a pushbutton via which the closure plug is firmly connected to the drain socket of the basin. In a first embodiment, the pushbutton is attached to an anchor fixing seat fastened in the drain connector. The anchor fixing seat is preferably firmly connected to the inner wall of the drain connector via a bridge. This bridge can in particular have two arms. For example, in a first variant of this embodiment, the anchor fixing seat can have an internal thread into which the pushbutton is screwed with its lower end. By means of the two arms of the bridge, the locking seat having the thread is then attached to the inner wall of the drain socket. In a second variant of this embodiment, the anchor fixing seat can have a seat which tapers downwards to accommodate the pushbutton into which the pushbutton is fitted. For this purpose, the pushbutton has a tapered projection at the lower end, preferably a cone that fits exactly into the seat in the anchor fixing seat (anchor cone system).

When using the anchor locking seat with a thread, the pushbutton can be permanently installed in the drain socket and can no longer be removed easily. A conventional socket wrench can be used, for example, to assemble and disassemble the pushbutton. In a preferred embodiment, it is attached to a suitable socket wrench flattened portion at the upper end of the pushbutton by inserting it between the open sealing plug and the pelvic floor. The screw connection prevents the sealing plug from being stolen by unauthorized persons. Such people usually act spontaneously, so that, due to the lack of suitable tools, they are then not able to detach the firmly screwed components from the drain connector. Hence this system Particularly suitable for pools that are installed in places accessible to everyone, for example in public facilities.

When using the anchor locking seat with a tapering seat to accommodate the push button, the plug can be easily removed from the drain socket together with the push button in order to be able to remove any contamination without problems.

In a second embodiment, a bridge-like construction is used to fasten the pushbutton in the drain socket, in which the pushbutton is attached to or lies on the inner wall of the drain socket via an annular projection. This projection can be designed as a step-like narrowing of the drain connector on this projection. For example, a narrow constriction in the axial direction can be provided, or a constriction that extends downward over the entire further course of the drain connector. Instead of an annular projection, projections can alternatively also be provided at suitable locations on the inner wall of the drain socket, to which the push button is attached or on which it rests. The projections can also have depressions into which the pushbutton engages with suitable arms.

In order not to unnecessarily impede the free flow of the water, the pushbutton in this embodiment has, for fastening or for resting on the projections in the drainage connection, preferably laterally projecting arms which engage in corresponding recesses in the projection (the projections) or on this (n ) rest (suspension bridge system), ie support yourself there. The arms leave a sufficient distance between the inner wall of the drain connector and the push button body. At least three such arms, for example three, four or five arms, can be provided in order to give the closure device the required mechanical stability in the outlet connection. The arms can also ensure sufficient stability when attaching the push button in the drain port be designed as an axially extending wing. The wings can in particular have axially parallel end edges. The wings can in particular be designed in such a way that their front edges can rest at least in O-sections on the inner wall of the drain socket. The front edges can be stepped in particular for resting on the projection or for engaging in the cutouts. For this purpose, the wings can preferably be provided with projections which, for example, engage in the cutouts in the projection (the projections) or rest on the projection (the projections). In a preferred embodiment, the arms themselves can also have lugs for fastening the pushbutton in the drain socket, which engage in a bayonet-like manner in correspondingly shaped recesses in the projections in the drain socket. For this purpose, the pushbutton with these lugs, which preferably extend tangentially on the arms on the outside, is inserted into the outlet connection in such a way that it engages there. For this purpose, the lugs on the arms on the pushbutton can be designed to match the corresponding cutouts in the projections in the drainage connection, for example as wedge-shaped or conical lugs that can be inserted into matching wedge-shaped or conical cutouts.

The above-mentioned embodiments (suspension bridge system) are advantageous over the other fastening options mentioned above if a considerable contamination of the drain must be expected, for example in basins in commercial kitchens. Because the free cross-section in the drain socket is not restricted by internals, for example by a drain spider, contaminants can pass through the cross-section without any problems. In addition, blockages can be removed more easily by attaching a cleaning spiral than in the other two variants, because the fastening arms or wings are also removed when the pushbutton is removed from the drain connector. Any hair stuck to the arms of the push button can be easily removed by rinsing if the upper edges of the arms are smooth and attached to the push button without a gap. Contamination is also eliminated by the pushbutton in the built-in was also not held back when the arms taper to a point on the lower edges, so that dirt is washed off again and again.

Furthermore, in a further suspension bridge system variant, the pushbutton for fastening in the outlet connection can also be equipped with wing arms which protrude radially from the pushbutton body and whose radially projecting end edges in the upper region can be preferably parallel to the pushbutton body, but are conical towards the bottom Axis are continuously formed together. The drain socket is also partially conical on the inside, thus forming a seat for the push button. The

Pushbuttons can be inserted in the axial direction from above into the drain socket and then sits in the conical area of the drain socket via its wing arms also supported in a bridge-like construction in the drain socket, the leading edges of which preferably lie flat against the conical inner wall of the drain socket.

In contrast to the known closure devices, the closure plug can therefore also be easily removed from the drain socket with the push button, so that the latter can be easily cleaned. Because the pushbutton in the bridge-like construction is supported in the drain connector and not above the connector, a device which does not interfere with the water drainage and cannot be moved accidentally in the operating state is also created. Due to the simple structure, impurities are practically not retained, so that the drain cannot become blocked.

In this embodiment, since there are no protruding corners, edges, or other protrusions, contaminants cannot get stuck. For this purpose, the inside wall of the drain socket is as smooth as possible. The wing arms of the push button preferably also have no protruding corners or edges. The push button can in particular have three wing arms of this type. In order to prevent the pushbutton from being unauthorized being stolen from the outlet connection, the wing arms of the pushbutton in this embodiment can also have a preferably one to four thread which is cut into the leading edges of the wing arms. In this case, a corresponding thread is also provided in the conical part of the inner wall of the drain socket, so that the wing arms can be screwed into this thread. Since the thread is introduced in the area in which the front edges of the wing arms and the inner wall of the drain socket are conical, the thread only needs to have a few gears, since it is not possible to screw the two thread surfaces over a large number of gears.

As an alternative to the aforementioned embodiments, it is also possible to secure the pushbutton in the drain socket by screwing in that the wing arms on the pushbutton rest on a projection on the inner wall of the drain socket as described above and a thread is provided on the front edges of the wing arms, which can be screwed into a corresponding thread in the inner wall of the drain socket. Since the push button is seated on the projection in the drain connector via the wing arms, a conical tapering of the wing arms and of the drain connector is not necessary; the inner wall can be cylindrical. The thread can be cut in the area of the projection. Of course, it can also be provided in the cylindrical part or in the transition region between the projection and the lower cylindrical part. In this case too, there are preferably one to four threads in the thread.

In order to prevent the unauthorized theft of locking devices from basins, for example in public facilities, the locking plug can also be attached to the push button by means of a locking mechanism. The latching mechanism preferably has an annular groove on a bolt on the pushbutton extending in the axial direction and a spring-elastic clip which engages in the annular groove and which engages on a receiving sleeve is attached to the plug. The clasp can in particular consist of spring steel. The clasp can be inserted, for example, with the one clasp leg through a hole in the receiving sleeve and engage with the leg in the groove on the bolt. This leg is preferably straight. With the second leg, the clip can grip around the receptacle from the outside in order to cling there. For this purpose, this leg is preferably arcuate. Alternatively, an annular groove can also be embedded on the inside of the receiving sleeve. In this case, a resilient ring with an annular gap is provided, which is inserted into the groove on the bolt and which also engages in the groove in the receiving sleeve when the locking plug is connected to the push button. If the ring diameter and the wire diameter of the ring are in the correct size relationship to the groove depths in this case, the ring protrudes from the groove on the bolt so that it engages when the bolt is inserted into the receptacle on the underside of the sealing plug.

In both cases described above, the stopper can then no longer be easily removed from the drain socket by unscrewing it. If the distance between the sealing plug and the pool surface is also sufficiently small to prevent the pushbutton from being removed from its seat with conventional socket wrenches, disassembly is made even more difficult.

For example, in the latter case, a special tool that can be operated with one hand could be used for disassembly. This tool has two articulated legs, one of which has a claw on the free end facing away from the joint for gripping around a flattened part of the pushbutton, and of which the other has a counterpart to the claw on the free end facing away from the claw the claw has on the flattened part. When the two legs are pressed together, for example with one hand, the claw is placed on the flattened part and held there with the counterpart. By turning the The push button can then be unscrewed from the threaded seat. For easier handling, the tool can also have a handle on one leg and a counter pressure surface on the other. The tool is preferably made of tool steel.

This securing of the closure device can be used both when the pushbutton is screwed into an anchor fixing seat by means of a thread, and also when the suspension bridge system is used, for example with a projection on the inner wall or conical inner wall of the drain socket, the pushbutton in this case is equipped with the protrusions extending tangentially on the pushbutton and these protrusions are bayonet-like inserted into corresponding tangential recesses in the protrusions in the outlet connection.

The push button can be made in different construction principles:

Usually the pushbutton will have a spring shaft and a locking cylinder running axially in the spring shaft, the locking cylinder being connected to the sealing plug and the spring shaft being fastened in the drain socket or resting there. In principle, these two elements can also be interchanged, that is to say that the locking cylinder is supported in the outlet connection and the spring shaft is connected to the sealing plug. ^• The relative movement of the locking cylinder in relation to the spring shaft fastened in the drain socket enables the lifting movement of the sealing plug to open and close.

To securely guide the locking cylinder in the spring shaft, the locking cylinder can be provided in the spring shaft by means of an axially extending groove on the outside of the locking cylinder. In addition, a pin is mounted in this case on the inside of the spring shaft, for example a screwed by ^'the outer wall of the spring shaft threaded pin extending into the groove. Of course, the groove can also be on the inside of the tongue Be attached - a slot in the spring shaft wall is also possible - and the pin on the outside of the locking cylinder. In principle, the pin in the latter variant can also be pressed outwards into the groove in the spring shaft by a spring which is supported in the interior of the locking cylinder. If the groove does not extend over the entire axial length of the locking cylinder or the spring shaft, a stop is formed for the pin protruding into the groove. If the groove is formed in a suitable manner, it can be prevented that the locking cylinder slips out of the spring shaft. This is of particular interest if the locking cylinder in the spring shaft is pressed upwards by a compression spring, for example located in the lower interior of the spring shaft. This spring can be supported in particular on the bottom of the spring shaft. If the pin did not experience a stop in the groove, the locking cylinder could not be held in the spring shaft against the spring force.

In order to enable the locking cylinder to snap into the spring shaft and thus the locking plug in the two locking positions 'closed position' and 'open position', a mechanism such as a ballpoint pen with a rotary cylinder with tooth-shaped projections and corresponding tooth-shaped recesses can be used in a first design variant Guide cylinders can be provided for the rotary cylinder. Such a construction is described in detail, for example, in DE 27 22 585 A and EP 1 338 707 A1. Therefore, the details of this design principle described there are hereby expressly included in the disclosure of the present application.

In a second design variant, a locking rod is provided. For this purpose, the part of the locking cylinder running in the spring shaft is flattened. The open position and the closed position of the sealing plug connected to the locking cylinder are defined by a heart-shaped locking rod groove, which is inserted into the flattened part of the locking cylinder and has a stepped groove depth. A groove fastened in the lower part of the spring shaft engages in this groove Lock rod depending on the position of the locking cylinder in a first or a second locking position. These two positions correspond to different heights of the locking cylinder in the spring shaft. The locking rod is preferably designed as a wire bent in the form of a bracket, one leg of which is preferably bent at a right angle can be inserted into a fastening hole at the lower end of the spring shaft, so that the bracket is axially immovable in the spring shaft. The bracket can preferably be held in this position by a spring ring. The upper leg of the locking rod engages in the groove in the locking cylinder and thus defines its height in the spring shaft. The stepped groove depth gives the locking rod leg, which engages in the groove, a certain direction during movement in the groove, so that the locking positions in the groove are alternately assumed by the leg.

In a third design variant, a wing disc is used to define the height adjustment of the locking cylinder in the spring shaft. This variant is preferable to the others because it is even more robust and therefore more durable than the other two. The interior in which the wing disc is located can be hermetically sealed against liquid by a suitable design of the pushbutton, for example with a sealing ring.

In this case, the part of the locking cylinder running in the spring shaft has a receiving surface for a wing disk which has an axis of rotation running transverse to the longitudinal axis of the locking cylinder. As in the variant described above, the receiving surface can be flattened. In contrast to the other two variants, the upper interior of the spring shaft has a smaller diameter than the lower interior. The open position and the closed position of the sealing plug are defined here by the rotational position of the wing disc mounted on the receiving surface, in that the wing disc in a first rotational position in that its radial extent in this rotational position is greater than the diameter of the upper interior of the spring shaft, in the lower interior of the Fe- derschachtes is held and is supported at the lower entrance to the upper interior of the spring shaft. Because the radial expansion of the wing disk after rotation into a second rotational position is at most as large as the diameter of the upper interior of the spring shaft, the wing disk can then also slide into the upper interior by moving the locking cylinder. The wing disc is preferably mounted vertically and can be pressed against the receiving surface of the locking cylinder, for example by a leaf spring. When the sealing plug is pressed down, the locking cylinder firmly connected to it is also pressed into the spring shaft, in particular against a spring force. The wing disc can run against an inclined stop plane, which is preferably located at the bottom of the spring shaft, so that the disc is rotated by a certain angle. After the rotation, the wing disc can retract into the upper interior of the spring shaft with a smaller diameter when the locking cylinder in the spring shaft moves back. If the locking cylinder is pressed down again, the wing disc is rotated on a retaining pin attached in the lower interior of the spring shaft, so that when the wheel is moved back again, the disc hits the constriction in the spring shaft again. In order that the wing disc is only rotated on the retaining pin when it is pressed down, but not when it is moved back, the retaining pin is preferably axially displaceable in a springy manner. When passing through the front of the wing blades of the wing disc, which is designed like a cutting knife, the pin is pressed in axially. In addition, a ratchet can be firmly connected to the wing disc. A leaf spring runs against the teeth of the ratchet, which prevents the wing disk from turning back when it is moved back.

The sealing plug is preferably designed as a curved disc. A sealing lip, in particular made of rubber, is preferably provided on the circumference in the closing area, that is to say the area of the stopper which, when closed, rests against the upper edge of the drain connector and closes it. This creates a particularly tight closing effect. Alternatively, the closure stopper can also be disc-shaped flat with a sealing lip in the peripheral region.

Depending on the application, the drain socket can be designed as a straight tube, for example with a length of 250 mm or 350 mm. The tube can also be angled for use on bathtubs or shower trays. In the latter use, the drain socket can also be screwed into a deep bed closure as a short, straight piece of pipe which is shaped in such a way that it also acts as an odor trap. For this purpose, the deep bed closure is attached to the drain opening of the pool and has a side drain directly below the pool floor. The drain socket is screwed into the drop-down bed closure from above and protrudes into a depression that is constantly filled with water.

For use on sinks, connections can also be provided on the pipe for the discharge of dishwashers or washing machines. The tube can also be short for certain applications, for example when it is to be combined with other tube elements, for example curved tube elements, for example on bathtubs, shower trays or sink basins. The pipes can usually be connected to one another by plug-in or screw connections. Openings in the pipe, for example at the level of the pushbutton, can also be provided to catch the water running off through an overflow opening in the basin. Such and other designs of the drain connector are familiar to the person skilled in the art and are also to be regarded as the disclosure of the present application.

The individual elements of the devices according to the invention can be made of different materials, for example of brass for the push button, the springs and the spring ring holding the locking rod of course made of steel, in particular of stainless steel. The wing disc or the locking rod can also be made of steel. The upper part of the drain socket as well as the sealing plug can consist of brass or steel, these are preferably chrome-plated for aesthetic reasons. The lower part of the drain connector can be made of (chrome-plated) steel, for example. The drain socket can of course also consist of a plastic, for example PVC.

The above embodiments can be combined with one another in any manner.

For a more detailed explanation of the invention, reference is made to the following figures which show schematic representations of the devices according to the invention. They show in detail:

Figure 1 is a side view of a closure device with a drain port. FFiigg .. 22 is a plan view of a sealing plug;

Fig. 3 is a plan view of a first fastening device for the

Push button;

Fig. 4 is a plan view of a second fastening device for the

Push button; FFiigg .. 44aa is a side view of a push button with a side arm shown here for attachment in the drain socket;

4b shows a side view of a pushbutton with two lateral arms shown here for fastening in the outlet connection;

4c shows a side view of a pushbutton with two lateral arms shown here for fastening in the drain socket with threaded fastening; Figure 4d is a side view of a push button with a side arm shown here for attachment in the drain socket with threaded attachment in the cutout. 4e shows a side view of a pushbutton with the lateral arms shown here for fastening in the drain connection according to the suspension bridge system in the cutout; Fig. 5 is a side view of a push button;

6 is a front view of a locking cylinder;

6a is a view of the locking rod;

Fig. 7a e <in section through a push button with wing disc in the lower

Latching position;

7b a> a section through a pushbutton with a wing disk in the upper locking position;

Fig. 8a is a side view of the upper part of a push button with a

Sealing plugs; FFiigg .. 88bb a top view of the fastening of the sealing plug on the

Push button by means of a clasp;

9 shows a special tool for assembling and disassembling the push button i 1 ers and sealing plug;

Fig. 10 e ι in section through a bathtub or shower tray drain.

In Fig. 1, a closure device according to the invention is shown with a drain socket 1, only the closure plug 2 and part of the push button 3 can be seen. The drain connector 1 is designed as a straight tube made of steel. The sealing plug 2 is a flat cover which has a sealing lip 4 made of rubber on the circumferential side in the closing area. The plug 2 is preferably made of brass or steel and is chrome-plated. The plug 2 is connected to a push button 3. For this purpose, the pushbutton 3 has an external thread at its upper end, which is screwed into a corresponding thread on the underside of the sealing plug 2. It is not shown how the push button 3 is fastened inside the drain connector 1. The push button 3 can be seen through a hole 5 in the wall of the drain connector 1. This hole 5 also serves, like a second opposite one, to introduce water overflowing from the basin into the outlet connection 1. For this purpose, these holes 5 are arranged in the drain connection 1 in such a way that, when the drain connection 1 is installed, they are located within the basin shell. The drain connector 1 with the closure device is inserted into the opening provided for this purpose in a basin, for example in a hand wash basin, so that the upper rubber angle seal 6 lies in a corresponding recess in the opening and reliably seals the area underneath. The drain pipe 1 has a thread 7 in its upper area in order to mount the pipe 1 firmly in the basin. For this purpose, first a rubber bead seal 8 is slipped over the neck from below, followed by a plastic press seal 9. Finally, a hexagon nut 10 is used to fasten these elements, which is screwed against the underside of the basin from below.

2, the sealing plug 2 is shown schematically. The edge of this stopper 2 comprises a seal 4. This is preferably a sealing lip 4 made of rubber, which is embedded in a corresponding notch on the circumference of the stopper edge.

In Fig. 3, a first fastening device for the push button in the drain port 1 is shown. This includes an anchor locking seat 11, which is provided with an internal thread for receiving the push button. Instead of the thread, the anchor fixing seat 11 can also have a seat which tapers downwards to accommodate the pushbutton. The anchor fixing seat 11 is firmly connected to the inner wall of the drain connector 1 via a two-armed bridge 12.

In Fig. 4, a second fastening device for the push button in the drain port 1 is shown. For this purpose, a bridge-like construction is used, in which the push button is attached to the inner wall of the drain connector 1 via an annular projection 13. This projection 13 is designed as a step-like constriction of the drain connector 1 on this projection. In order not to unnecessarily impede the free flow path of flowing water, the push button for attachment has only three laterally projecting arms (not shown) which engage in corresponding cutouts 14 in the projection 13. If none such recesses 14 are provided, the arms can simply rest on the projection 13. The arms leave a sufficient distance between the inner wall of the drain connector and the push button body. In these cases, the push button can be easily removed from the drain socket and cleaned, for example.

In Fig. 4a, a push button 3 is shown with one of three arms 40, which can rest on corresponding projections 49 on the projection in the drain port. The arms 40 can also have further, for example wedge-shaped or conical lugs 41 on the projections 49, which can be inserted into correspondingly shaped recesses in the projections in the drainage connection. For this purpose, the pushbutton 3 is first inserted in the axial direction into the recesses in the projections in the outlet connection and then by means of a bayonet-like engagement it snaps into the tangentially continuing recesses in the projections in the outlet connection. This enables the closure device to be securely fastened in the drain socket, so that the device cannot be removed without authorization.

The arms 40 can - as shown here - be cut off horizontally at the upper edge 50. Of course, any other shape is also conceivable, for example an edge that slopes away from the pushbutton 3. The lower edge can - as shown here - open into a tip 51. Of course, this edge can also be designed differently in a suitable manner, for example as an edge that is horizontal and straight to the outside. The shape of the edges should be chosen according to the requirements, whereby it should preferably be selected so that dirt does not stick to the arms, if at all, or at least little, and - if dirt remains - can be easily rinsed off after the pushbutton has been removed from the drain socket ,

The further elements shown in FIG. 4a with the reference numbers 15, 16, 17, 18, 19, 21, 23 and 25 are explained in more detail below with reference to FIG. 5. The further embodiment of FIG. 4b also serves to fasten the pushbutton 3 in the outlet connection 1, which is indicated here (the inner wall 95 of which is shown by corresponding boundary lines). As in the case of the above-described embodiments, the pushbutton 3 has wing arms 40. Two of the three wing arms 40 are shown here. The front edges of the wing arms 40 resting against the inner wall 95 of the shaft are formed in the upper region parallel to the spring shaft 16. In the lower region, however, the arms taper in such a way that they lie flat against the inner wall 95 of the likewise tapered drain connector 1 over the end edges 52 thereof. For this purpose, the free cross section of the drain connector 1 tapers in the corresponding area. The corresponding inner wall area 96 is also conical there. By inserting the push button 3 in the drain connector 1, it sits firmly in the conical area of the drain connector 1 and can be more or less firmly clamped there, depending on the selected slope of the cone (conicity).

The further elements shown in FIG. 4b with the reference numbers 2, 4, 15, 16, 17, 18, 19, 21, 23 and 25 are explained in more detail below with reference to FIG. 5.

A further preferred fastening option for the pushbutton 3 in the outlet connection 1 is shown in FIG. 4c. The pushbutton 3 with the wing arms 40 in this embodiment is practically identical to that of FIG. 4b. A difference between the two embodiments is that a thread 53 is provided on the end edges 52 of the wing arms 40 and on the inner wall 95 of the drain connector 1, in particular in its inner wall area 96. This thread is located in the conically tapering area of the front edges 52 or the inner wall 95. The detail in FIG. 4c shows this detail schematically in an enlarged view. The further elements shown in FIG. 4c with the reference numerals 2, 4, 15, 16, 17, 18, 19, 21, 23 and 25 are explained in more detail below with reference to FIG. 5.

In a further embodiment of the present invention, the pushbutton 3 is likewise fastened in the drainage connection via a thread 53 (see FIG. 4d: cutout in the region of the annular projection 13 with a wing arm of a pushbutton resting on it). In this case, however, the inner wall 95 of the drain connector does not have a conical taper but is cylindrical in shape. The same also applies to the front edges of the wing arms 40, by means of which the pushbutton is fastened in the drain socket. As in the case of FIG. 4, an annular projection 13 is provided on the inner wall 95 of the drain socket, on which the wing arms 40 rest. In this case, the thread 53 is cut in the region of the transition from the projection 13 to the lower vertical cylindrical part of the inner wall 95 or the corresponding end edge of the wing arms 40. In this case, a one- or two-start thread is used to fasten the push button in the drain socket.

The further elements shown in FIG. 4d with the reference numbers 15 and 17 are explained in more detail below with reference to FIG. 5.

FIG. 4e shows a pushbutton 3 used in a drain connection 1 according to the suspension bridge system. The push button 3 can be constructed according to one of the construction principles described in this application. The meaning of the reference numerals 15, 16, 17, 18, 19, 21, 23, 25 and 50 corresponds to the meaning of the elements shown in the previously explained figures.

In this case, the pushbutton 3 rests on axially extending wing arms 40, 40 'on an annular projection 13 in the outlet connection 1. Two wing arms 40, 40 'are shown of three wing arms on the push button. The right wing arm 40 lies in the imaging plane, while the left wing arm 40 'is only shown in the projection, since it is outside the imaging level lies. In the case of the left wing arm 40 ', the front edges 60 are also visible. The wing arms 40, 40 'have axially parallel end edges. The end edges 40, 40 'are stepped to rest on the projection 13. As a result, projections 49 are formed on the end edges 40, 40 '. By means of these projections 40, 40 ', the pushbutton 3 can be placed in the outlet connection 1. Since the end edges run parallel to the axis and lie in the upper section as closely as possible against the inner wall of the drain connector 95, the pushbutton 3 can be stably inserted into the drain connector 1 without tilting.

In Fig. 5 a side view of a push button 3 in the embodiment with locking rod 22 is shown schematically. The push button 3 consists of a locking cylinder 15 and a spring shaft 16. The locking cylinder 15 is axially movable in the spring shaft 16, the cylinder 15 can be removed upwards for removal. The locking cylinder 15 is guided in the spring shaft 16 via a groove 17 and a pin attached to the inner wall of the spring shaft 16, here a threaded pin 18. The groove 17 is limited at the bottom, so that the locking cylinder 15 cannot slip out of the spring shaft 16 in the assembled state. The set screw 18 can be unscrewed for disassembly.

A thread 19 is provided at the upper end of the locking cylinder 15 for fastening the sealing plug to the pushbutton 3. An anchor thread 20 is also provided for fastening the spring shaft 16 in the anchor fixing seat - insofar as such a fastening is chosen in the drainage connection. Together with the screw connection, the locking bead 21 serves for the fixed connection of the push button 3 in the drainage connection. For the assembly and disassembly of the pushbutton 3 in the drain socket, a socket wrench flat 25 is embedded in the upper area of the locking cylinder 15. Since this flattened portion 25 is accessible with a socket wrench or with the special tool described below when the sealing plug is open, the sealing device can be easily attached to the drain socket and also removed again. In order to define the locking positions of the locking cylinder 15 in the spring shaft 16 and thus the open position and the closed position of the sealing plug, a locking rod 22 is attached inside the spring shaft 16. This rod 22 is suspended in the lowermost part 23 of the spring shaft 16 and secured by means of a locking rod securing spring 24 which surrounds the spring shaft 16 peripherally.

Not shown is a compression spring which is located in the lower region of the spring shaft 16 and below the locking cylinder 15 and which pushes the locking cylinder 15 upwards.

6 also shows the locking cylinder 15 in the embodiment with locking rod (not shown) schematically. At the upper end of the locking cylinder 15, the thread 19 for fastening the sealing plug and the socket wrench flat 25 can again be seen. Furthermore, the groove 17 for guiding the locking cylinder 15 in the spring shaft is again shown. The locking cylinder 15 is flattened 29 in its lower part.

The locking rod engages with its upper leg in the locking rod groove 26. This groove 26 is heart-shaped. Their depth is appropriately graded. If the locking cylinder 15 is pressed down by pressure on the sealing plug, the cylinder 15 moves relative to the upper leg of the locking rod, so that this leg engages in the upper part of the heart-shaped groove 26. When the locking cylinder 15 is released, the locking rod engages in the upper, downward-pointing heart tip 27. When the locking cylinder 15 is pressed down again and released again, the cylinder 15 moves relative to the upper leg of the locking rod, so that this leg engages in the lower heart tip 28 in the heart-shaped groove 26 and engages there. The groove depth is graded. Therefore, the upper leg of the locking rod always snaps into a different area of the heart-shaped groove 26 when the locking plug is pressed down or released again. ever after grading the depth of the groove 26, the locking rod leg is guided clockwise or counterclockwise in the groove 26. An embodiment of a locking rod 22 is shown in FIG. 6a.

7a and 7b show the two locking positions of the locking cylinder 15 in the spring cylinder 16, which are each fixed by a wing disk 30. The wing disc 30 is rotatably fastened on a lower flattened part 29 (receiving surface) of the locking cylinder 15 via a bearing 31 and is essentially vertical. Starting from the position in FIG. 7b, the wing disc 30 is rotated by 45 ° against a stop plate 32 when the spring shaft 16 moves down. Then it has the rotational position according to FIG. 7a. 7b into the upper interior 33 of the spring shaft 16, the wing disk 30 strikes against the lower projection 34 of the upper interior 33 and comes up when it is raised in the rotational position according to FIG. 7a to stand in the lower rest position. When moving down again from this rotary position, the wing disk 30 is rotated again by 45 ° by moving along the retaining pin 42 and thus reaches the rotary position according to FIG. 7b. The retaining pin 42 is fastened in the spring shaft 16. In order that the wing disc 30 is only rotated when it is moving down and not when it is moving backward while it passes through the retaining pin 42, the front edges of the wing blades of the wing disc 30 (viewed in a clockwise direction) are designed like knife edges, while the rear sides are blunt. As a result, the rear sides abut the retaining pin, while the front sides slide over it without causing rotation. The retaining pin 42 is resiliently mounted in a bore in the spring shaft 16, so that it is pressed into the bore in one direction when the wing disk passes, while the blunt edges of the wing blades abut against it and lead to a rotation of the wing disk 30. In order to prevent the wing disk 30 from rotating back, a ratchet 43 is also firmly connected to the wing disk 30. A leaf spring 44, which is fastened to a stop point 45, runs against the teeth of the ratchet 43 and thus prevents rotation. hung in the wrong direction (here: counterclockwise). The wing disk 30 can be pressed against the flat 29 on the locking cylinder by means of a leaf spring, not shown here.

8a shows a further embodiment for fastening the closure plug 2 to the pushbutton 3. For this purpose, the pushbutton 3 has a bolt 36 in its upper region. Below the bolt 36, a socket wrench flat 25 can again be seen. This enables the pushbutton 3 to be unscrewed from the receiving seat in the outlet connection.

A receptacle sleeve 38 is also provided on the plug 2 for fastening the plug 2 to the pushbutton 3. The bolt 36 of the pushbutton 3 is inserted into the receiving sleeve 38 for fastening. For the releasable fastening of the sealing plug 2 on the pushbutton 3, a clip 37 (split pin) is then inserted into a bore in the receiving sleeve 38 and snaps into an annular groove 35 on the bolt. This can be seen even better in FIG. 8b. The clip 37 preferably has the shape shown in Fig. 8b. In particular, it can consist of spring steel. The clasp 37 is fastened by clasping the receiving sleeve 38. Since one (straight) leg of the clip 37 engages in the annular groove 35, which extends around the entire circumference of the bolt 36, the sealing plug 2 can be rotated on its seat without exerting any torque on the pushbutton 3. This prevents the pushbutton 3 from being unscrewed from the thread on the anchor fixing seat or from being disengaged from the cutouts in the projections in the drain connector.

FIG. 9 shows a side view of a special tool 100 for loosening or fastening the push button in a drain socket. The tool 100 essentially consists of two legs 101, 102. The two legs 101, 102 are connected to one another via a joint 103. One leg 102 has at its free end facing away from the joint 103 a claw 105 which, for example, like the mouth of a plug-in (hexagon) final ice can be shaped. The other leg 101 has at its free end facing away from the joint 103 a counter-holder 104 which holds the claw 105 on the socket wrench attachment when the tool is attached to the socket wrench flat on the pushbutton (see for example FIG. 5). This prevents the claw 105 from slipping off. The two ends of the legs 101, 102 can be straight, as shown in FIG. 9, or can be cranked downwards or upwards, depending on the design of the closure device and the shape of the pelvic floor. To actuate the tool 100, it can be taken in one hand, for example by the fingers encompassing the leg 102 and the ball of the thumb 101. To compress the two legs 101, 102, the claw is pressed firmly onto the flattened portion of the pushbutton. The pushbutton can then be released from the outlet connection by turning the tool 100. In the same way, the tool 100 can of course also be used to mount the push button in the drain connector. In order to improve handling, the legs 101, 102 can have gripping surfaces (not shown here), for example recessed grips, which are made of plastic, for example.

Finally, a specially shaped drain system for bathtubs and shower trays is shown in section in FIG. 10. The system essentially consists of a deep bed closure 46 which can be inserted into the bottom opening of a corresponding basin and fastened there in a known manner (not shown here). The deep-bed closure 46 has an internal thread at its inlet opening, into which the outlet connector 1 can be screwed. For this purpose, it has an external thread 48 in the upper region. The deep bed closure 46 is shaped in such a way that water can collect in the lower region without running off. The water level 47 is set at the lowest level of the drain area of the closure 46. The drain connector 1 is dimensioned so long that it extends below the water level 47 so that an odor trap is achieved. The pushbutton with the sealing plug 2 is fastened in the manner described above in the outlet connection 1 or rests thereon. It goes without saying that the embodiments and examples described here serve only to illustrate the invention and that numerous different modifications and changes as well as combinations of the features disclosed here are possible for a person skilled in the art and are included in the disclosure of the present application insofar as they are are covered by protection of the claims set out below. All information contained in the listed publications, including the patent documents, is hereby included in the disclosure content of the present application.

LIST OF REFERENCE NUMBERS

1 drain socket

2 sealing plugs

3 push buttons 4 sealing lip

5 overflow opening

6 rubber angle seal

7 threads

8 rubber bead seal 9 plastic press seal

10 hexagon nut

11 anchor locking seat

12 Two-armed bridge

13 annular projection 14 recesses in the projection 13

15 locking cylinders

16 spring shaft

17 guide groove

18 Grub screw 19 Thread for the sealing plug 2

20 anchor threads

21 locking bead

22 locking rod

23 Locking rod securing receptacle 24 Locking rod locking spring

25 Socket wrench flat

26 locking rod groove

27 upper heart tip of the locking rod groove 26

28 lower tip of the heart of the locking rod groove 26 29 spring pressure heel, mounting surface

30 wing disc

31 bearings for the wing disc 30 Stop plate upper interior of the spring shaft 16 lower projection of the upper interior 33

ring groove

Bolt on the push button 3 spring-elastic clasp

receiving sleeve

wing arm

Wing arm nose 40

Retaining pin

ratchet

leaf spring

anchorage point

Drop center closure

water level

thread

Projection upper edge on wing arm 40 lower tip on wing arm 40 tapered front edges of wing arms 40

Thread of axially parallel end edges of wing arms 40

Inner wall of the drain connector 1 Tapered inner wall area of the drain connector 1

Tool

cross legs

tool limbs

joint

backstop

claw

Claims

claims:

1.Closing device for a sanitary basin with a drain socket (1) and a sealing plug (2) arranged therein for manual closing of the basin, the sealing plug (2) being movable in the axial direction and can be latched in an open position and a closed position by means of a push button (3) is characterized in that the pushbutton (3) is supported in a bridge-like construction in the drain port (1).

2. Closure device according to claim 1, characterized in that the closure plug (2) can be latched in the open position in such a way that the closing level of the closure plug (2) is arranged above the drain edge of the drain socket (1).

3. Closure device according to one of the preceding claims, characterized in that the push button (3) is arranged in the drain connector (1) and that the closure plug (2) is connected to the drain connector (1) via the push button (3).

4. Closure device according to one of the preceding claims, characterized in that the push button (3) is supported via laterally projecting arms (40) in the outlet connection (1).

5. Closure device according to claim 4, characterized in that the arms (40) are axially extending wings.

6. Closure device according to claim 5, characterized in that the wings (40) at least in sections on the inner wall (95) of the Drain socket (1).

7. Closure device according to claim 6, characterized in that the wings (40) abut over end edges (60) at least in sections on the inner wall (95) of the drain connector (1).

8. Closure device according to one of claims 5-7, characterized in that the wings (40) have axially parallel end edges (60).

9. Closure device according to one of the preceding claims, characterized in that the push button (3) via an annular projection (13) on the inner wall (95) of the drain connector (1) is attached or rests thereon.

10. Closure device according to claim 9, characterized in that the push button (3) has at least three laterally projecting arms (40), via which the push button (3) is supported on the projection (13) by the arms (40) on the Rest the projection (13) or engage in corresponding recesses (14) in the projection (13).

11.Closing device according to claim 10, characterized in that the end edges (60) are stepped (49) for resting on the projection (13) or for engaging in the cutouts (14).

12. Closure device according to one of the preceding claims, characterized in that the pushbutton (3) is equipped with substantially radially projecting wing arms (40) which conically converge downwards and into a correspondingly conically shaped section (96). of the drain connector (1) can be used.

13. Closure device according to claim 12, characterized in that the end edges (52) of the wing arms (40) have a thread (53) which engage in a corresponding thread (53) in the conical section (96) of the drain connector (1) can.

14. Closure device according to one of the preceding claims, characterized in that the pushbutton (3) is equipped with substantially radially projecting wing arms (40), via which the pushbutton (3) rests on projections (13) in the outlet connection (1) and have a thread (53) on the end edges (52) which engages in a corresponding thread (53) on the inner wall (95) of the drain connector (1).

15. Closure device according to one of the preceding claims, characterized in that the closure plug (2) can be fastened to the pushbutton (3) via a latching mechanism, the latching mechanism being an annular groove (35) on a bolt (36) extending in the axial direction ) on the pushbutton (3) and a resilient clip (37) fastened to a receiving sleeve (38) in the sealing plug (2) for engagement in the annular groove (35).

16. Closure device according to one of the preceding claims, characterized in that the pushbutton (3) has a spring shaft (16) and an axially extending in the spring shaft (16) locking cylinder (15), the locking cylinder (15) with the sealing plug (2) connected and the spring shaft (16) is fastened in the outlet connection (1) or rests there.

17. Closing device according to claim 16, characterized in that the locking cylinder (15) in the spring shaft (16) by means of an outside on the locking cylinder (15) axially extending groove (17) and one on the inside of the spring shaft (16) and in the groove (17) extending pin (18) is guided.

18. Closure device according to one of claims 16 and 17, characterized in that the locking cylinder (15) is pressed upwards by a spring supported on the bottom of the spring shaft (16).

19. Closure device according to one of claims 16 - 18, characterized in that the part of the locking cylinder (15) running in the spring shaft (16) is flattened and the open position and the closed position of the closure plug connected to the locking cylinder (15)

(2) is defined by a heart-shaped locking rod groove (26), which is introduced into the flattened part (29) of the locking cylinder (15) and has a stepped groove depth, into each of which a locking rod (22) fastened in the lower region (23) of the spring shaft (16) after position of the locking cylinder (15) engages in the spring shaft (16) in a first or a second locking position.

20. Closure device according to one of claims 16 - 18, characterized in that the upper interior (33) of the spring shaft (16) has a smaller diameter than the lower interior, that the part of the locking cylinder (15) extending in the spring shaft (16) Receiving surface (29) for a wing disc (30) with an axis of rotation extending essentially transversely to the longitudinal axis of the locking cylinder (15) and the open position and the closed position of the sealing plug (2) connected to the locking cylinder (15) by the rotational position of the wing disc ( 30) is defined in that the wing disc (30) in a first rotational position in that its radial extent in this rotational position is greater than the diameter of the upper interior (33) of the spring shaft (16), in the lower interior of the spring shaft (16 ) is held and for this purpose is supported at the entrance (34) to the upper interior (33) of the spring shaft (16) and the wing disc (30) d by turning into a second rotary position in that its radial extent in this rotational position is at most as large as the diameter of the upper interior (33) of the spring shaft (16), can also slide into the upper interior (33).

21.Closing device according to one of the preceding claims, characterized in that the sealing plug (2) is provided on the circumferential side with a sealing lip (4) in the closing area.

22. Use of a pushbutton (3) for actuating a sealing plug arranged in a drain socket (1) of a sanitary basin

(2), characterized in that the pushbutton (3) is supported in a bridge-like construction in the drain connector (1).

23. Use according to claim 22, characterized in that the sealing plug (2) is engaged in the open position so that the closing level of the sealing plug (2) is arranged above the drain edge of the drain connector (1).

24. Use according to any one of claims 22 and 23, characterized in that the push button (3) is arranged in the drain connector (1) and that the sealing plug (2) is connected to the drain connector (1) via the push button (3).

25. Use according to any one of claims 22-24, characterized in that the pushbutton (3) is supported in the drainage connection (1) via laterally projecting arms (40).

26. Use according to claim 25, characterized in that the arms (40) are axially extending wings.

27. Use according to claim 26, characterized in that the flow Gel (40) abut at least in sections on the inner wall (95) of the drain connector (1).

28. Use according to claim 27, characterized in that the wings (40) abut at least in sections on the inner wall (95) of the drain connector (1) via end edges (60).

29. Use according to one of claims 26-28, characterized in that the wings (40) have axially parallel end edges (60).

30. Use according to any one of claims 22-29, characterized in that the push button (3) is attached to an inner projection (13) on the inner wall (95) of the drain connector (1) or rests thereon.

31. Use according to claim 30, characterized in that the push button (3) for fastening has at least three laterally projecting arms (40), via which the push button (3) is supported on the projection (13) by the arms on the projection (13) rest or engage in corresponding recesses (14) in the projection (13).

32. Use according to claim 31, characterized in that the end edges (60) are stepped (49) for resting on the projection (13) or for engaging in the cutouts (14).

33. Use according to one of claims 22 - 32, characterized in that the pushbutton (3) is equipped with substantially radially projecting wing arms (40) which are designed to run conically downwards and into a correspondingly conical section (96). of the drain connector (1) can be used.

34. Closure device according to claim 33, characterized in that the front edges (52) of the wing arms (40) have a thread (53) which can engage in a corresponding thread (53) in the conically shaped section (96) of the drain connector (1).

35. Use according to one of claims 22 - 34, characterized in that the pushbutton (3) is equipped with substantially radially projecting wing arms (40), via which the pushbutton (3) rests on projections (13) in the outlet connection (1) and which have a thread (53) on the end edges (52) which engages in a corresponding thread (53) on the inner wall (95) of the drain connector (1).

36. Use according to one of claims 22-35, characterized in that the sealing plug (2) can be fastened to the push button (3) by means of a latching mechanism, the latching mechanism being an annular groove (35) on a bolt extending in the axial direction

(36) on the pushbutton (3) and a resilient clip (37) fastened to a receiving sleeve (38) in the sealing plug (2) for engagement in the annular groove (35).

37. Use according to one of claims 22 - 36, characterized in that the pushbutton (3) has a spring shaft (16) and a locking cylinder (15) running axially in the spring shaft (16), the locking cylinder (15) with the sealing plug ( 2) and the spring shaft (16) is fastened in the drainage connection (1) or rests there.

38. Use according to claim 37, characterized in that the locking cylinder (15) in the spring shaft (16) by means of an axially extending groove (17) on the outside of the locking cylinder (15) and one on the inside of the spring shaft (16) and in the groove (17) extending pin (18) is guided.

39. Use according to one of claims 37 and 38, characterized shows that the locking cylinder (15) is pressed upwards by a spring supported on the bottom of the spring shaft (16).

40. Use according to one of claims 37 - 39, characterized in that the part of the locking cylinder running in the spring shaft (16)

(15) is flattened and the open position and the closed position of the sealing plug (2) connected to the locking cylinder (15) is defined by a heart-shaped locking rod groove (26) with a stepped groove depth which is introduced into the flattened part (29) of the locking cylinder (15), into which a locking rod (22) fastened in the lower region of the spring shaft (16) engages in a first or a second latching position, depending on the position of the locking cylinder (15) in the spring shaft.

41. Use according to one of claims 37 - 39, characterized in that the upper interior (33) of the spring shaft (16) has a smaller diameter than the lower interior, that the part of the locking cylinder (15.) Running in the spring shaft (16) ) has a receiving surface (29) for a wing disc (30) with an axis of rotation extending essentially transversely to the longitudinal axis of the locking cylinder (15) and the open position and the closed position of the sealing plug (2) connected to the locking cylinder (15) by the rotational position of the wing disc ( 30) is defined in that the wing disk (30) is held in the lower interior of the spring shaft (16) in a first rotational position in that its radial extent in this rotational position is greater than the diameter of the upper interior (33) of the spring shaft (16) and is supported for this at the entrance (34) to the upper interior (33) of the spring shaft (16) and the wing disc (30) by rotation into a second rotational position in that its radial extent in this rotational position is at most as large as the diameter of the upper interior (33) of the spring shaft (16) and can also slide into the upper interior (33).

2. Use according to any one of claims 22-41, characterized in that the sealing plug (2) is provided on the circumferential side with a sealing lip (4) in the closing area.