EP4244435A1

EP4244435A1 - Waste sieve

Info

Publication number: EP4244435A1
Application number: EP21807062.1A
Authority: EP
Inventors: Rosario Nagero
Original assignee: Individual
Current assignee: Nagero Rosario
Priority date: 2020-11-10
Filing date: 2021-11-05
Publication date: 2023-09-20
Also published as: US20240318415A1; WO2022101107A1; DE102020129613A1; CN116867945A

Abstract

The invention relates to a method for opening and/or closing a waste sieve, comprising the method steps of: inserting the waste sieve into an outlet of a water basin (300) or the sieve of an outlet of a water basin, the waste sieve having a closure part (20), a sieve part (10) and a guide (10); and performing a movement of the closure part guided by the guide of the waste sieve to open or close the waste sieve. The invention also relates to a waste sieve having a sieve part (10), a tubular closure part (20), and a guide element (10), the tubular closure part (20) being arranged movably in relation to the sieve part (10).

Description

A B F L U S S S I E B

The invention relates to a method for opening and/or closing a drain strainer with the method steps of inserting the drain strainer into a drain of a water basin (300) or the strainer of a drain of a water basin, the drain strainer having a closure part, a strainer part and a guide, performing a guided by the guide of the drain strainer movement of the closure part to open or close the drain strainer. The invention also relates to a drain strainer with a strainer part, a tubular closure part and a guide element, the tubular closure part being arranged so that it can move relative to the sieve part.

State of the art

Water basins such as sinks, shower trays or similar containers usually have a permanently installed sieve in the drain, which has openings of such large dimensions that only large parts, e.g. cleaning utensils, are retained and do not get into the drain. Smaller dirt particles, e.g. leftover food and hair, are not retained by the drain filter and can lead to blockages in the drain. Furthermore, this built-in drain strainer is located far below the bottom of the pool, making cleaning difficult. In addition, there are small sieves that can be used in the built-in drain. These tend to be narrower, clog faster and are similarly difficult to clean.

It is therefore the object of the present invention to provide a drain strainer that can be used in a drain of a conventional water basin, that can be easily removed and cleaned again and yet protects the drain of the water basin from dirt and blockage. Furthermore, it is an object of the invention To provide a method that ensures protection against pollution and clogging of the drain during draining of water from the water basin.

The object is achieved by means of the method for opening and/or closing a drain strainer according to claim 1. Advantageous embodiments of the invention are set out in the dependent claims.

The method according to the invention for opening and/or closing a drain sieve has two method steps: In the first method step, the drain sieve is inserted into the outlet of a container for temporary filling with water. According to the invention, a container for temporary filling with water is a container that can be filled with water and has a drain connected to the container, due to its design, for emptying the water. The container can therefore be, for example, a washbasin, a shower or bathtub or a sink. Such containers usually have a permanently installed sieve in the drain, but with openings of such large dimensions that only large parts, e.g. cleaning utensils, are held back and do not get into the drain. Smaller dirt particles, e.g. leftover food and hair, are not retained by the drain filter and can lead to blockages in the drain. According to the invention, the drain strainer has a closure part, a strainer part and a guide.

In the second method step, a movement of the closure part guided by the guide is carried out in order to open and/or close the drain strainer. The movement of the closing part relative to the screen part can be a linear movement, a rotary movement (rotary movement) or a combination of linear and rotary movement. The movement of the closure part is guided by the guide in such a way that the drain strainer according to the invention is reliably opened or closed. The method can be used in many different areas. An application in sinks in the household or catering sector is very advantageous. Use in dishwashers, in particular industrial and catering dishwashers, is also of particular advantage. Furthermore, the method and also the drain strainer can be used in any type of drain in which the drain itself is to be kept free of floating bodies.

In a further embodiment of the invention, the guided movement is carried out along the main axis of the closure part. The tubular screen part is inserted into the outlet of a container for temporary filling with water in such a way that the main axis of the screen part is also arranged essentially vertically. The guided movement along the main axis of the closure part therefore also takes place in the vertical direction.

In a development of the invention, an opening between the closure part and the sieve part is opened or closed by the guided movement of the closure part. When the drain strainer is in the open state, the water in the container can flow out through the opening into the drain. The screen part holds back dirt particles.

In a further embodiment of the invention, the guided movement takes place by inserting a tubular closure part and a tubular sieve part into one another. The closure part and screen part have such similar pipe diameters that the screen part is effectively closed like a telescope by inserting both parts into one another.

In a development of the invention, the closure part is held in the end position by gravity, in which the drain strainer is closed. Due to the gravitational force, no additional force is required, for example by a user or other components. In a further embodiment of the invention, the closure part is locked in the open position. The locking takes place in such a way that the closure part is locked at a height relative to the vertically arranged sieve part and the water in the container can thus flow off into the drain. The screen part holds back dirt particles.

In a further embodiment of the invention, the closure part is locked by a mandrel guided through a screen opening of the screen part. The mandrel is guided through one or more openings of the sieve part, the closure part rests on the mandrel due to the gravitational force. By releasing the mandrel, the closure part can be guided into the closed end position.

The object is also achieved by the drain strainer according to claim 8. Further advantageous embodiments of the invention are set out in the dependent claims.

The drain strainer according to the invention has a strainer part, a tubular closure part and a guide element. According to the invention, the closure part is movably arranged in relation to the sieve part. The drain strainer is opened or closed by relative movement of the strainer part and closure part. The movement of the closing part relative to the screen part can be a linear movement, a rotary movement (rotary movement) or a combination of linear and rotary movement. The movement of the closure part is guided by the guide in such a way that the drain strainer according to the invention is reliably opened or closed.

In a further embodiment of the invention, the drain strainer is intended to be inserted into a drain of a container for temporary filling with water. In the context of the invention, a container for temporary filling with water is a container that can be filled with water and connected to the container via a construction-related device connected drain for emptying the water. The container can therefore be, for example, a washbasin, a shower or bathtub or a sink. Such containers usually have a permanently installed sieve in the outlet, but which has openings of such large dimensions that only large parts, eg cleaning utensils, are held back and do not reach the outlet. However, smaller dirt particles, such as leftover food and hair, are not held back by the drain sieve and can lead to blockages in the drain.

In a development of the invention, the sieve part forms the guide element. The closure part is thus guided through the sieve part during the relative movement. A separate guide element is therefore not necessary.

In a further embodiment of the invention, the screen part is designed as a tube. The diameter of the tube is dimensioned in such a way that it can be inserted into the drain of a container for temporary filling with water.

In a further embodiment of the invention, the tube wall of the screen part has screen openings. The sieve openings hold back dirt particles when the drain sieve is open.

In a development of the invention, the tube wall of the screen part forms the guide element. The closure part is thus guided through the tube wall of the screen part during the relative movement. A separate guide element is therefore not necessary.

In a further embodiment of the invention, the outer diameter of the closure part is smaller than the inner diameter of the sieve part or the outer diameter of the sieve part is smaller than the inner diameter of the closure part. The closure part can be guided in the sieve part or over the sieve part. In a further embodiment of the invention, the tube wall of the sieve part has a length of at least 20% of the length of the tubular closure part. According to the invention, the length of the tube wall of the sieve part is at least 20% of the length of the tube wall of the closure part. This dimensioning ensures that the pipe wall of the screen part, which at the same time forms a guide element for guiding the closure part, can guide the closure part with sufficient stability and hold it in position when the drain screen is closed.

In a further embodiment of the invention, the guide element is suitable and provided for guiding a movement of the closure part relative to the screen part.

In a development of the invention, the guide element is designed in such a way that it is suitable for guiding the movement of the closure part relative to the screen part in the axial direction of the closure. The tubular screen part is inserted into the outlet of a container for temporary filling with water in such a way that the main axis of the screen part is also arranged essentially vertically. The guided movement along the main axis of the closure part therefore also takes place in the vertical direction.

In a further embodiment of the invention, an opening between the closure part and the sieve part is closed in an end position of the relative movement. When the drain strainer is in the open state, the water in the container can flow out through the opening into the drain. The screen part holds back dirt particles. When the drain strainer is closed, the opening is closed and the water remains in the container.

In a further embodiment of the invention, a first seal is arranged between the closure part and the sieve part in the end position of the relative movement. The end position is defined by the first seal and is arranged in such a way that when the drain strainer is in the closed state, the opening between the closure part and the strainer part is closed. In a further embodiment of the invention, the first seal is connected to the closure part or the sieve part.

In a development of the invention, a second seal is arranged on the sieve part. The second seal is arranged on an opposite side of the first seal.

In a further embodiment of the invention, the second seal is suitable and intended to be inserted into the drain of a water basin and to seal between the drain and the screen part. In addition, inaccuracies in the different dimensioning of the drain and strainer are compensated.

In a further embodiment of the invention, the locking device locks the closure part and the sieve part in relation to one another. The locking takes place in such a way that the closure part is locked at a height relative to the vertically arranged sieve part and the water in the container can thus flow off into the drain. The screen part holds back dirt particles.

In a development of the invention, the locking device is designed as a mandrel and can be guided through one of the screen openings of the screen part. The mandrel is guided through one or more openings of the sieve part, the closure part rests on the mandrel due to the gravitational force. By releasing the mandrel, the closure part can be guided into the closed end position.

In an advantageous embodiment of the invention, the closure part is designed as an overflow protection. In the closed state of the drain strainer according to the invention used in the drain of a water basin, the water is kept in the basin. With further supply of water into the water basin, the drain strainer prevents overflow from the water basin into the environment, in that the water enters the outlet of the water basin via the closure part.

In a further embodiment of the invention, the guide element has a length of at least half the tube length of the closure part. According to the invention, the length of the tube wall of the sieve part is at least 50% of the length of the tube wall of the closure part. This dimensioning ensures that the tube wall of the screen part, which at the same time forms a guide element for guiding the closure part, can guide the closure part with sufficient stability and hold it in position when the drain screen is closed.

Exemplary embodiments of the drain strainer according to the invention and the method according to the invention for opening and/or closing a drain strainer are shown schematically simplified in the drawings and are explained in more detail in the following description.

Show it:

Fig. 1: Drain strainer with strainer part and closure part

Fig. 2: Cross section of the closed drain strainer

Fig. 3: Drain strainer with external closure part

Fig. 4: Cross section of the closed drain strainer with the outside

locking part

Fig. 5: Drain strainer with locked locking part

Fig. 6: Opened drain sieve in a water basin

Fig. 7: Detailed view of the open drain strainer in a drain of a

water basin Fig. 8: Detailed view of the closed drain screen in a drain of a

water basin

Fig. 9: Detailed view of the screen part in a drain of a water basin

Fig. 10: Sieve part with locking part with spring-loaded locking

Fig. 11: Detailed view of the drain strainer with spring-loaded locking in a drain of a water basin

Fig. 12: Locking part with screwable handle

Fig. 13: Drain sieves with internal locking

Fig. 14: Drain strainer with locking seal integrated in the closure part

Fig. 15: Drain strainer with rubber locking seal

1 shows a view of an embodiment of the drain strainer 100 according to the invention. The drain strainer 100 has the tubular strainer part 10 and the likewise tubular closure part 20 . The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. A seal 13 is arranged on the sieve part 10 at the upper end. The lower end of the sieve part 10 also has a seal 40 which is suitable for being inserted into the outflow of a water basin 300 (see FIGS. 6ff). The seal 40 has a rim 41 to seal the drain 330 against the ingress of water.

The closure part 20 also has a tube wall 21 which is not penetrated by screen openings. In this exemplary embodiment, the pipe wall 21 of the closure part 20 has a smaller outer diameter than the inner diameter of the strainer part 10. At the upper end, the closure part 20 also has a seal 22, which rests on the upper seal 13 of the strainer part 10 when the drain strainer 100 is in the closed state . The closure part 20 also has the locking device 50 in the form of a spike, which is fastened to the fastening device 51 by means of a connection 52 . To close the drain 330 of a water basin 300, the drain strainer 100 is inserted 200 into the drain 330 of a container for temporary filling with water 300 such that the strainer part 10 is held by the lower seal 40 and by gravity in an end position in which the Drain strainer 100 is closed. The closure part 20 is inserted into the sieve part 10 and moved downwards along the main axis of the drain sieve 100 in such a way that the sieve openings 12 are closed by the tube wall 21 of the closure part 20 . The pipe wall 11 of the sieve part 10 guides the closure part 20 during the movement. To open the drain 330 of a water basin 300, the closure part 20 is moved upwards along the main axis of the drain sieve 100 in such a way that one or more sieve openings 12 no longer pass through the pipe wall 21 of the Closure part 20 are closed and the water can drain through the screen openings 12 into the outlet 330.

By using the drain strainer 100 according to the invention, not only is the actual drain 330 of the water container 300 kept free of dirt particles, but the lower region of the strainer part 10 is also opened when the closure part 20 is opened. Bodies or dirt particles floating at the top therefore do not block this area of the drain sieve 100 and the water can flow off unhindered. The tubular design of the sieve part 10 of the drain sieve 100 also means that the closure part 20 can be opened without having to reach into the water for this purpose. Furthermore, the arrangement of sieve openings 12 over the entire height and the entire circumference of the tubular sieve part 10 of the drain sieve 100 ensures that there are sufficient sieve openings 12 so that the water can flow off unhindered even with numerous floating bodies or heavy soiling.

2 shows a detailed view of an exemplary embodiment of a closed drain screen 100. The drain screen 100 has the tubular screen part 10 and the likewise tubular closure part 20 . In this exemplary embodiment, the tube wall 21 of the closure part 20 has a smaller outside diameter than the inside diameter of the sieve part 10. The sieve part 10 has the tube wall 11, which is pierced by sieve openings 12 at regular intervals.

The lower end of the screen part 10 has the seal 40 which is suitable for being inserted into the drain 330 of a water basin 300 . The seal 40 has an edge 41 to seal off the drain against the ingress of water. The closure part 20 also has a tube wall 21 which is not penetrated by screen openings. When the drain sieve 100 is in the closed state, the tube wall 21 rests tightly against the tube wall 11 of the sieve part 10 and prevents the water stored in the container 300 from being able to drain through the sieve openings 12 .

3 shows a view of a further exemplary embodiment of the drain strainer 100 according to the invention. The drain strainer 100 has the tubular strainer part 10 and the likewise tubular closure part 20 . The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. The lower end of the sieve part 10 has the seal 40 which is suitable for being inserted into the drain of a water basin 300 (see FIGS. 6ff). The seal 40 has an edge 41 to seal off the drain against the ingress of water.

The closure part 20 also has a tube wall 21 which is not penetrated by screen openings. In this exemplary embodiment, the tube wall 21 of the closure part 20 has a larger inner diameter than the outer diameter of the sieve part 10. The length of the tube walls 11, 21 are essentially the same in this and the other exemplary embodiments. According to the invention, the length of the pipe wall 11 of the sieve part 10 is at least 20%, preferably at least 50%, of the length of the pipe wall 21 of the closure part 20. This dimensioning ensures that the pipe wall 11, which at the same time forms a guide element for guiding the closure part 20, can guide the closure part 20 with sufficient stability and hold it in position when the drain strainer 100 is closed. At the upper end, the closure part 20 has a seal 22 which, in the closed state of the drain strainer 100 on the upper edge of the sieve part 10 rests. The closure part 20 also has the locking device 50 in the form of a spike, which is fastened to the fastening device 51 by means of a connection 52 .

To close the drain of a water basin 300, the drain strainer 100 is inserted 200 into the drain 330 of a container for temporary filling with water 300, that the strainer part 10 is held by the lower seal 40 and by gravity in an end position in which the drain strainer 100 is closed. The closure part 20 is placed over the sieve part 10 and moved downwards along the main axis of the drain sieve 100 in such a way that the sieve openings 12 are closed by the tube wall 21 of the closure part 20 . The pipe wall 11 of the sieve part 10 guides the closure part 20 during the movement.

To open the outflow of a water basin 300, the closure part 20 is moved upwards along the main axis of the drain sieve 100 in such a way that one or more sieve openings 12 are no longer closed by the pipe wall 21 of the closure part 20 and the water flows through the sieve openings 12 into the outlet 330 can expire.

4 shows a detailed view of an exemplary embodiment of a closed drain screen 100. The drain screen 100 has the tubular screen part 10 and the likewise tubular closure part 20 . In this exemplary embodiment, the tube wall 21 of the closure part 20 has a larger inner diameter than the outer diameter of the sieve part 10. The sieve part 10 has the tube wall 11, which is pierced by sieve openings 12 at regular intervals. The lower end of the screen part 10 has the seal 40 which is suitable for being inserted into the drain of a water basin 300 . The seal 40 has an edge 41 to seal off the drain against the ingress of water. The closure part 20 also has a tube wall 21 which is not pierced by screen openings. When the drain sieve 100 is in the closed state, the tube wall 21 rests tightly against the tube wall 11 of the sieve part 10 and prevents the water stored in the container 300 from being able to drain through the sieve openings 12 . 5 shows an open view of an embodiment of the assembled drain strainer 100 . The drain strainer 100 has the tubular strainer part 10 and the likewise tubular closure part 20 . The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. The lower end of the sieve part 10 has the seal 40 which is suitable for being inserted into the drain of a water basin 300 (see FIGS. 6ff). The seal 40 has an edge 41 to seal off the drain against the ingress of water.

The closure part 20 also has a tube wall 21 which is not penetrated by screen openings. In this exemplary embodiment, the pipe wall 21 of the closure part 20 has a larger inside diameter than the outside diameter of the strainer part 10. At the upper end, the closure part 20 has a seal 22 which, when the drain strainer 100 is in the closed state, rests on the upper edge of the strainer part 10. The closure part 20 also has the locking device 50 in the form of a spike, which is fastened to the fastening device 51 by means of a connection 52 .

The drain strainer 100 is held in the open position by means of the locking device 50 . For this purpose, the locking device 50 is guided through two opposing screen openings 12 in the tube wall 11 of the screen part 10 . The two screen openings 12 through which the locking device 50 is guided should, but do not necessarily have to, be arranged opposite one another at the same height of the screen part 10 . The closure part 20 is placed over the strainer part 10 and moved down along the main axis of the drain strainer 100 . The closure part 20 is held in an open position by its lower edge resting on the locking device 50 , the water can run off through the sieve openings 12 into the outlet 330 . At the same time, coarse dirt particles are held back by the screen part 10 and do not get into the outlet 330.

A view of an exemplary embodiment of the assembled drain strainer 100 in the open state, inserted into the drain 330 of a water basin 300, is shown in FIG is. The screen of the outlet 310 is installed in the outlet 330 . The drain strainer 100 has the tubular strainer part 10 and the likewise tubular closure part 20 . The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. The lower end of the screen part 10 has the seal 40 which is suitable for being inserted into the drain 330 of a water basin 300 . The seal 40 has a rim 41 to seal the drain 330 against the ingress of water.

The closure part 20 is held in an open position by its lower edge resting on the locking device 50 , the water can run off through the sieve openings 12 into the outlet 330 . The drain strainer 100 is closed or opened by means of the movement of the closure part 20 along the vertical axis of the strainer part 10 .

7, 8 and 9 show a detailed view of an exemplary embodiment of the assembled drain strainer 100 in the open state with the closure part 20 locked, in the closed state and without the closure part 20, each inserted into the drain 330 of a water basin 300. The water basin 300 has the drain 330 , which is connected to the drain pipe 320. The screen of the outlet 310 is installed in the outlet 330 . The drain strainer 100 has the tubular strainer part 10 and the likewise tubular closure part 20 . The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. The lower end of the screen part 10 has the seal 40 which is suitable in the drain 330 of a Water basin 300 to be used. The seal 40 has a rim 41 to seal the drain 330 against the ingress of water.

The closure part 20 also has a tube wall 21 which is not penetrated by screen openings. In this exemplary embodiment, the pipe wall 21 of the closure part 20 has a larger inner diameter than the outer diameter of the sieve part 10. The closure part 20 also has the locking device 50 in the form of a mandrel, which is fastened to the fastening device 51 by means of a connection 52. The closure part 20 is held in an open position by its lower edge resting on the locking device 50 , the water can run off through the sieve openings 12 into the outlet 330 . The drain strainer 100 is closed or opened by means of the movement of the closure part 20 along the vertical axis of the strainer part 10 .

In Figure 8, the drain strainer 100 is shown in a closed condition. The closure part 20 is closed by resting its lower edge on the edge 41 of the seal 40 . Thus, no water can drain from the water basin 300. 9 shows a detailed view of the sieve part 10 without the closure part 20, inserted into the drain 330 of a water basin 300. The seal 40 has a rim 41 to seal the drain 330 against the ingress of water. The water can drain through the screen openings 12 into the drain 330 . At the same time, coarse dirt particles are held back by the screen part 10 and do not get into the outlet 330.

10 and 11 shows a view of a further exemplary embodiment of the drain strainer 100 according to the invention. The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. A seal 13 is arranged on the sieve part 10 at the upper end. The bottom end of Sieve part 10 also has a seal 40 which is suitable for being inserted into the outflow of a water basin 300 . The seal 40 tapers conically downwards inside the tubular screen part 10 (FIG. 10b) and also has the edge 41 for sealing the drain 330 against water penetrating from above.

The closure part 20 (FIG. 10c) also has a tube wall 21 which is not perforated by screen openings. In this exemplary embodiment, the tube wall 21 of the closure part 20 again has a smaller outer diameter than the inner diameter of the sieve part 10. The lower end of the closure part has the conically tapering seal 22, which is dimensioned such that the seal 22 fits into the seal in the closed state 40 of the sieve part 10 engages. On the head part 23 the closure part 20 also has a seal which rests on the upper seal 13 of the filter part 10 when the drain strainer 100 is in the closed state. The closure part 20 also has the locking device 50 which is arranged in the head part 23 of the closure part 20 . The locking device 50 has two prestressed leaf springs 53, each having a latching element 54.

The exemplary embodiment (see FIG. 10) of the assembled drain sieve 100 in the open state, inserted into the drain 330 of a water basin 300, is shown in FIG. 11. The locking elements 54 of the locking device snap into opposite sieve openings 12 of the sieve part 10 and thus hold the drain sieve 100 in an open position. In the closed position of the drain strainer 100, the seal on the head part 23 of the closure part 20 rests in the seal 40 of the strainer part 10 and prevents water from draining out of the water basin 300.

A further exemplary embodiment of a closure part 20 is shown in FIG. 12. The tube wall 21 of the closure part 20 has the conically tapering seal 22 at the lower end of the closure part, which is dimensioned such that the seal 22 engages in the seal 40 of the sieve part 10 in the closed state . At the upper end, the closure part 20 also has a seal 22 which is in the closed state of the drain strainer 100 the upper seal 13 of the screen part 10 rests (Fig. 12 a). The head part 23 is designed as a ring with an internal thread 25 and has a handle 23 for easier handling (FIG. 12b). The pipe wall 21 has the corresponding external thread 24 (FIG. 12c) with which the head part 23 is screwed onto the pipe wall 21 before the drain strainer 100 is used or can be unscrewed for easier cleaning.

The closure part 20 also has the locking device 50 which is arranged on the head part 23 . The locking device 50 has two prestressed leaf springs 53, each having a latching element 54. As in the previous exemplary embodiment (see FIG. 11), the latching elements 54 snap into opposite sieve openings 12 of the sieve part 10 and hold the drain sieve 100 in either the open or closed position.

FIG. 13 shows a further exemplary embodiment of the drain strainer 100 according to the invention, in which the locking device 50 is arranged between the closure part 20 and the strainer part 10 . The drain strainer 100 corresponds to that shown in FIG. 10, the locking device 50 is arranged in this exemplary embodiment on the head part 23 in such a way that the leaf springs 53 run along the pipe wall 21, touch it and are stretched outwards at the lower end. The lower ends in turn have the latching elements 54 . The latching elements 54 of the locking device 50 snap into opposite sieve openings 12 of the sieve part 10 and thus hold the drain sieve 100 in the open or closed position.

Another exemplary embodiment of a drain screen 100 according to the invention is shown in FIG. 14. The drain screen 100 has the tubular screen part 10 and the likewise tubular closure part 20 . The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. A seal 13 is arranged on the sieve part 10 at the upper end. The lower end of the screen part 10 also has a seal 40 which is suitable for being inserted into the drain of a water basin 300 . The closure part 20 also has a tube wall 21 which is not penetrated by screen openings. In this exemplary embodiment, the pipe wall 21 of the closure part 20 has a smaller outer diameter than the inner diameter of the strainer part 10. At the upper end, the closure part 20 also has a seal on the head part 23, which in the closed state of the drain strainer 100 rests on the upper seal 13 of the strainer part 10 is up. The head part 23 has the handle 23 for easier handling. The head part can also be designed as a seal in order to seal between the sieve and the closure part. At the lower end, the tube wall 21 of the closure part 20 has a locking lug 56 running around the circumference of the tube wall 21 (FIG. 14a).

The assembled drain strainer 100 in the open state is shown in FIG. 14b. The detent 56 exerts such a pressure on the tube wall 11 of the sieve part 10 that the closure part 20 is held in an open position. The drain strainer 100 is closed or opened by exerting a force on the closure part 20 along its vertical axis.

A variant of the previous exemplary embodiment (see FIG. 14) of a drain strainer 100 according to the invention is shown in FIG. The screen part 10 has the tube wall 11 which is pierced by screen openings 12 at regular intervals. A seal 13 is arranged on the sieve part 10 at the upper end. The lower end of the screen part 10 also has a seal 40 which is suitable for being inserted into the drain of a water basin 300 .

The closure part 20 also has a tube wall 21 which is not penetrated by screen openings. In this exemplary embodiment, the pipe wall 21 of the closure part 20 has a smaller outer diameter than the inner diameter of the sieve part 10. At the upper end, the closure part has a head part 23 as a seal, which in the closed state of the drain sieve 100 rests on the upper seal 13 of the Screen part 10 rests. The head part 23 has the handle 23 for easier handling. At the lower end, the tube wall 21 of the closure part 20 has a locking groove 57 running around the circumference of the tube wall 21 for receiving the locking element 58 (FIG. 15a). The locking element 58 is preferably made of an elastic but at the same time water-resistant material, for example a rubber. However, it is also possible for the latching element 58 to be designed as a metal clamping ring.

When the drain strainer 100 is in the assembled state, the latching element 58 also exerts such a pressure on the pipe wall 11 of the strainer part 10 that the closure part 20 is held in an open position. By exerting a force on that

Closure part 20 along its vertical axis, the drain strainer 100 is closed or opened.

REFERENCE LIST

drain strainer

sieve part/guide

Wall

screen openings

First seal of the strainer

locking part

wall of the closure part

First seal of the closure part

Head part of the closure part

external thread

inner thread

Second seal of the sieve part

Gasket Stopper/Border/Border

locking device

attachment

connection

Locking device spring

locking element

handle

detent

locking groove

locking element Washbasin/sink/bathtub, shower tray/container for temporary filling with water Drainage strainer Drainpipe

Claims

PAT E N TA N S P RUCH E Method for opening and/or closing a drain strainer (100) with the method steps:

• Insertion of the drain screen (100) in an outlet (330) of a water basin (300) or the screen of an outlet (310) of a water basin (300), the drain screen (100) having a closure part (20), a screen part (10) and has a guide

• Carrying out a movement of the closure part (20) guided by the guide of the drain strainer (100) in order to open or close the drain strainer (100). Method for opening and/or closing a drain sieve (100) according to Claim 1, characterized in that an opening between the closure part (20) and the sieve part (10) is opened or closed by the guided movement of the closure part (20). Method for opening and/or closing a drain strainer (100).

Claim 1 or 2, characterized in that the guided movement is effected by the insertion of a tubular closure part (20) and a tubular sieve part (10) into one another. Method for opening and/or closing a drain sieve (100) according to one or more of the preceding claims, characterized in that

22 the closure part (20) is held by gravity in the end position in which the drain strainer (100) is closed.

5. A method for opening and/or closing a strainer (100) according to one or more of the preceding claims, characterized in that the closure part (20) is held by gravitation in the end position in which the strainer (100) is closed.

6. A method for opening and/or closing a drain sieve (100) according to one or more of the preceding claims, characterized in that only some of the sieve openings (12) are opened or closed by the guided movement of the closure part (20).

7. drain strainer (100) comprising:

• a sieve part (10)

• a tubular closure part (20)

• a guide element, the tubular closure part (20) being arranged such that it can move with respect to the sieve part (10).

8. Drain strainer (100) according to claim 7, characterized in that the drain strainer (100) has a first seal 13, which is intended to be inserted into a drain (330) of a water basin (300), wherein with proper use of the drain strainer (100) in the outflow (330) of a water basin (300) sieve openings (12) are arranged above the first seal 13 of the sieve part 10.

9. drain strainer (1) according to claim 7 or 8, characterized in that the sieve part (10) forms the guide element.

10. Drain strainer (100) according to one or more of Claims 7 to 9, characterized in that the strainer part (10) is designed as a tube, with strainer openings (12) being arranged on the tube wall (11) of the strainer part (10) and wherein the Tube wall (11) of the screen part (10) forms the guide element.

11 . Drain strainer (100) according to Claim 10, characterized in that the outer diameter of the closure part (20) is smaller than the inner diameter of the sieve part (10) or the outer diameter of the sieve part (10) is smaller than the inner diameter of the closure part (20), the closure part ( 20) can be guided in the screen part (10) or over the screen part (10).

12. Drain strainer (100) according to one or more of claims 7 to 11, characterized in that the guide element is suitable and provided for guiding a relative movement of the closure part (20) to the strainer part (10), the guide element being designed in such a way that it is suitable for guiding the movement of the closure part (20) relative to the sieve part (10) in the axial direction of the closure (20).

13. Drain strainer (100) according to claim 12, characterized in that in an end position of the relative movement an opening (12) between the closure part (20) and the strainer part (10) is closed, with a first seal (13) between the closure part in the end position of the relative movement (20) and sieve part (10) is arranged and wherein the first seal (13) is connected to the closure part (20) or the sieve part (10).

14. Drain strainer (100) according to one or more of claims 7 to 13, characterized in that a second seal (40) is arranged on the strainer part (10), the second seal (40) being suitable and intended for the drain (330) of a water basin (300) to be inserted and sealed between the drain (330) and the sieve part (10).

15. Drain strainer (100) according to one or more of claims 7 to 14, characterized in that the drain strainer (100) has a locking device (50), the locking device (50) locking the closure part (20) and the strainer part (10) to one another and wherein the locking device (50) has a latching element which can be guided partially into one of the screen openings (12) of the screen part (10).

16. Drain strainer (100) according to claim 15, characterized in that the locking element is designed as a mandrel or as a ball.

17. Drain strainer (100) according to claim 15 or 16, characterized in that the locking element is resiliently mounted on the closure part.

18. Drain strainer (100) according to one or more of claims 7 to 17, characterized in that the guide element has a length of at least half the pipe length of the closure part (20).

19. Drain strainer (100) according to one or more of claims 7 to 18, characterized in that the closure part (20) has a locking seal (56),

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20. Drain strainer (100) according to claim 19, characterized in that the locking seal (56) is arranged circumferentially around the wall (21) of the closure part (20).

21. Drain strainer (100) according to claim 19 or 20, characterized in that the outer circumference of the locking seal (56) is greater than or equal to the inner circumference of the wall (11) of the strainer part (10) and the outer circumference of the wall (21) of the closure part (20) is less than the inner circumference of the wall (11) of the strainer (10), or the inner circumference of the locking seal (56) is less than or equal to the outer circumference of the wall (11) of the strainer and the inner circumference of the wall (21) of the closure part is greater than the outer circumference of the wall (11 ) of the sieve part (10).

22. drain strainer (100) according to one or more of claims 19 to 21, characterized in that the locking seal (56) by changing the local circumference of the wall (21) of the closure part (20), or

23. the locking seal is designed as a rubber seal (58) which is mounted in a groove (57) of the closure part (20). Drain strainer (100) according to one or more of Claims 19 to 22, characterized in that the closure part (20) can be locked to the strainer part (10) with the aid of the locking seal (56).

24. Screen part (10) according to one or more of claims 7 to 23.

25. Closure part (20) according to one or more of claims 7 to 23.

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