CN113195840B

CN113195840B - Device for containing toilet bowl cleaning agent

Info

Publication number: CN113195840B
Application number: CN201980083181.XA
Authority: CN
Inventors: I·亨宁; U·A·蒂曼; K·格哈茨; C·岑格; M·道贝; B·奥利希; F·勒默尔; B·瓦尔登
Original assignee: Henkel AG and Co KGaA
Current assignee: Henkel AG and Co KGaA
Priority date: 2018-12-18
Filing date: 2019-11-21
Publication date: 2024-03-08
Anticipated expiration: 2039-11-21
Also published as: EP3899152B1; CN113195840A; EP3899152A1; PL3899152T3; WO2020126297A1; DE102018222048A1

Abstract

The invention relates to a device (1) for accommodating a toilet cleaner, comprising at least one fixing device (4) for fixing the device (1) in a use position in a toilet bowl, and a housing (2), the housing (2) comprising in sequence: at least one first housing part (6) forming a receiving means for a toilet cleaner, which has at least one main opening (12) and is completely closed except for the at least one main opening (12), and at least one second housing part (8) controlling the toilet cleaner water supply and designed as a cover for the at least one main opening (12), wherein the second housing part (8) has a plurality of flushing openings (20) through which flushing openings (20) water can be led to the toilet cleaner and dissolved toilet cleaner can be led out of the housing (2) during flushing.

Description

Device for containing toilet bowl cleaning agent

Technical Field

The present invention relates to a device for containing a toilet cleaner, in particular for hanging in a toilet bowl.

Background

Such a device is known, for example, from EP 3 109,367 A1. They comprise a cleaning agent which is arranged in a housing, which may be in solid (e.g. pressed from powder), pasty or gel form, and which is gradually flushed out for cleaning when flushing the toilet.

The problem with such devices is that firstly they should exhibit good and uniform flushing behaviour, especially considering the flow conditions in the curved toilet bowl. Such a device should also be easy to use. When using toilet cleaners in the form of gels, it is also contemplated that such devices must generally be kept in airtight and/or vapor-sealed packages until used to prevent them from drying out.

Disclosure of Invention

The problem underlying the present invention is to provide a device for containing toilet cleaners which is easy to handle and which allows for the above-mentioned requirements.

This problem is solved by the subject matter of claim 1.

Advantageous embodiments and improvements can be found in the dependent claims, the accompanying description and the figures.

According to one aspect of the invention, a device for containing a toilet cleaner is specified, having at least one securing means for securing the device in a use position in a toilet bowl. The securing means may be, for example, hooks, clips, suction cups or adhesive dots.

The device also has a housing comprising at least one first housing part and at least one second housing part. The first housing part forms a receptacle for a toilet cleaner and has at least one main opening and is completely closed except for the at least one main opening.

The at least one second housing part controls the water supply to the toilet cleaner and is designed as a cover for the at least one main opening. The second housing part has a plurality of flushing openings through which water can reach the toilet cleaner during flushing and through which dissolved toilet cleaner can be led out of the housing.

The flushing opening in the second housing part provided as a cover of the main opening thus changes the opening cross-section, which is exposed to and can be contacted by water when the device is used.

The advantage of this device is that, due to the at least two-part design, the device can be manufactured particularly easily, for example by injection molding, thermoforming or compression molding for the first housing part and injection molding, thermoforming, film extrusion or a combination of composite film technology and/or various methods for the second housing part. The device can then be filled with toilet cleaner through the main opening before the second housing part is placed as a lid over the main opening.

Since the first housing part is completely closed except for the at least one main opening, the water supply and the discharge of the toilet cleaner are controlled by the design of the flushing opening in the second housing part. Since the second housing part can be manufactured as a single part, the second housing part can be designed for the entire housing irrespective of the injection molding process requirements, for example, so that it provides an optimal water supply for the toilet cleaner and an optimal discharge of dissolved toilet cleaner from the housing.

In particular, the housing can be designed such that at least one main opening in the first housing part is oriented towards the wall of the toilet bowl when the device is in the use position.

This has the advantage that the water supply can be optimised. Conventional devices for containing toilet cleaners often suffer from insufficient or uneven water reaching the cleaner during a flush due to the curved inner walls of the toilet bowl. By redeploying the main opening to the side of the device which is oriented towards the toilet bowl wall during use, a sufficient water supply during flushing is ensured.

According to one embodiment, the flushing openings are formed by through holes in the second housing part and the sum of their cross-sectional areas is smaller than the cross-sectional area of the at least one main opening. In this and in the following, a through-hole is understood to be an opening that completely penetrates the wall of interest, and said opening can be introduced in various ways, in particular during the shaping of the housing part itself, or by cutting, punching, blanking, etc.

According to this embodiment, covering the main opening with the second housing part reduces the opening of the housing. This has the advantage that the housing can be filled with toilet cleaning agent particularly well through the relatively large main opening, but that the water supply and the discharge of toilet cleaning agent can then be metered through the cover and the second housing part with the significantly smaller flushing opening, in order to prevent the toilet cleaning agent from flushing out too quickly. For example, the sum of the cross-sectional areas of the flushing openings may be less than one third or even less than one quarter of the cross-sectional area of the at least one main opening.

Additionally, the openings can be placed in strategically important locations to achieve optimal flushing effects, such as introducing water high in a targeted manner in the upper portion of the device and/or in the lower portion of the device to ease release of cleaning substances and prevent accumulation.

According to one embodiment, the through hole is provided with a baffle which in the inactive state of the device acts as a cover baffle for the opening and in the active state exposes the through hole and directs water through the opening into the housing.

In this and hereinafter, a flap is understood to mean an element which is connected to the second housing part, in particular by a hinge mechanism such as a living hinge or a thin material point or an inherent flexibility in the material due to the thickness of the material, and which is capable of being folded from a closed position to an open position (or which will automatically unfold if the closed position is not a stable position but a "forced/forced" position).

An advantage of this embodiment is that the baffles can be designed as water guiding elements which in their active (i.e. deployed) state catch more water and guide the water through the openings into the housing. The throughput of water through the housing is increased compared to a device having through holes but without such baffles. Furthermore, through holes or water-guiding elements of this type ensure a controlled minimum distance between the device and the toilet wall. This may result in a more uniform flushing characteristic compared to multiple toilet geometries—the difference in flushing characteristics due to different toilet geometries is significantly reduced.

The design of such a water-conducting element, such as a baffle, has the advantage that the device takes up less space in the inactive state. In particular, the second housing part can be closed before use by a gas-tight and/or water vapor-tight cap, which is removed by the user. Such airtight and/or vapor-tight covers can be attached to the second housing part, as the flaps in their inactive state act as covers for the openings and thus are coplanar with or protrude only slightly from the surface of the second housing part, while the open and thus protruding flaps can make this difficult.

The flap can in particular be designed such that it opens automatically when the cover is removed from the second housing part, for example due to a pretension. According to this embodiment, the flapper is in an inactive state under a pretension/pretension held by the cap, and moves to an active state when the cap is removed due to release of the pretension/pretension.

According to one embodiment, a single baffle is provided for each through hole in the second housing part. Alternatively, however, a single baffle may also be provided, which covers the entire second housing part or all through-holes in the second housing part.

The flap can optionally be connected to the second housing part by a living hinge. In particular, they can be designed integrally with the second housing part.

According to one embodiment, the flushing opening is closed by a gas-tight and/or water vapor-tight cover, which can be removed before use.

This has the advantage that the detergent in gel form can be prevented from drying out during the time between filling the housing and use.

In particular, single-or multilayer films (e.g. comprising PE, PP, OPP, BOPP, PET, aluminum, sealing medium (adhesive) and combinations thereof) can be used as the cover, which films are glued or welded to the edge of the first housing part or to the top of the second housing part in a face-to-face manner or in a point-by-point manner. To this end, the housing can optionally have a sealing edge.

The cover can be composed of at least one portion, each portion closing at least one flushing opening. The cover can also be composed of several parts, at least two of which can be removed from the housing adjacently and thus separately (i.e. from each other) or manufactured using film-compounding techniques and thus laminated to each other and thus removed one after the other on the surface, but can also be removed together.

This has the advantage that the user can decide himself by tearing off the cover how many flushing openings they want to open. In particular, a so-called enhanced function can be provided which can be activated by the user tearing the cover off the flushing opening-if necessary with special markings-which exposes a larger total flushing opening for the toilet cleaner.

At least two adjacent sections can be connected to each other, in particular by perforations.

According to one embodiment, the main opening is closed before use by a cover having at least two superposed, individually removable membranes with through holes providing flushing openings, the total area of the flushing openings of the inner membrane being larger than the outer membrane.

Herein, stacked films are understood to mean films designed as individual layers of a cover.

An inner membrane is understood to be a membrane which is arranged closer to the toilet cleaner than an "outer" membrane positioned above it. The inner membrane can only be removed after or simultaneously with the outer membrane.

An advantage of this embodiment is that the user can obtain an enhanced cleaning effect by tearing off the further film, since more cleaning agent is released through the larger rinse opening. Different labels/tabs can be provided for tearing off the different film layers and marking accordingly to indicate the enhancement to the user.

Alternatively, an airtight and/or vapor sealing cover without a through hole can be provided as the outermost film. According to this embodiment, the cover has at least three stacked, individually removable films, i.e

A first outer membrane for airtight and vapor-tight sealing;

a second intermediate membrane having a through-hole providing a flushing opening having a first cross-sectional area a, and

a third inner membrane having a through hole providing a flushing opening having a second cross-sectional area a, wherein a > a. Cross-sectional area A, a represents the sum of the cross-sectional areas of all of the irrigation openings provided in the respective membranes.

In this embodiment, when the device is in use, the user may first remove the first film and obtain a first cleaning effect by flushing the cleaning agent through a flushing opening having a first cross-sectional area a. The user may also remove the second film if it is desired to increase the cleaning effect, and a second, stronger cleaning effect is obtained by flushing the cleaning agent through a flushing port having a larger second cross-sectional area a.

The housing can also be arranged in a gas-tight and/or water-vapor sealed blister package. Such blister packages typically require more packaging material and may be more difficult for a user to open, but it is also possible to achieve an airtight and/or vapor-tight package for a housing having a geometry that is difficult to cover with a single cover film in an airtight and/or vapor-tight manner.

The housing in particular has separate, at least partially separate chambers for accommodating the respective parts of the toilet cleaning agent, each chamber having at least one flushing opening. A separate flushing opening can be provided for each chamber or a common flushing opening can be provided which can be entered into each chamber.

Dividing the housing into a plurality of chambers enables the toilet cleaner to be contacted with water and flushed out particularly uniformly.

The device is particularly suitable for containing a toilet cleaner in the form of a gel in a housing, since it enables a particularly simple airtight and/or vapor-tight packaging by means of a lid (for example in the form of a film).

Drawings

Embodiments of the present invention will be explained in more detail below with reference to the schematic drawings.

FIG. 1 schematically illustrates an apparatus for containing toilet bowl cleaners in accordance with an embodiment of the invention;

fig. 2 shows a cross section of the device according to fig. 1;

FIG. 3 schematically illustrates an apparatus for containing toilet bowl cleaners in accordance with yet another embodiment of the present invention;

fig. 4 schematically illustrates an apparatus for containing toilet bowl cleaners according to yet another embodiment of the present invention;

fig. 5 schematically illustrates an apparatus for containing toilet bowl cleaners according to yet another embodiment of the present invention;

fig. 6 schematically illustrates an apparatus for containing toilet bowl cleaners according to yet another embodiment of the present invention;

FIG. 7 schematically illustrates an apparatus for containing toilet bowl cleaners in accordance with yet another embodiment of the present invention;

fig. 8 shows a cross section of the device according to fig. 7;

fig. 9 schematically illustrates an apparatus for containing toilet bowl cleaners according to yet another embodiment of the present invention;

fig. 10 shows a cross section of the device according to fig. 9;

FIG. 11 schematically illustrates an apparatus for containing toilet bowl cleaners in accordance with yet another embodiment of the present invention;

FIG. 12 schematically illustrates an apparatus for containing toilet bowl cleaners in accordance with yet another embodiment of the present invention;

FIG. 13 schematically illustrates different views of an apparatus for containing toilet bowl cleaners in accordance with an embodiment of the present invention;

fig. 14 schematically shows a different view of a device for containing a toilet cleaner according to a further embodiment of the invention;

fig. 15 shows schematically a different view of the device according to fig. 14 in an open state;

fig. 16 schematically shows a different view of a device for containing a toilet cleaner according to a further embodiment of the invention; and

fig. 17 shows schematically a different view of the device according to fig. 16 in an open state.

Detailed Description

Fig. 1 and 2 schematically show a device 1 for containing a toilet cleaner in the form of a gel, not shown in the figures. The device 1 has a housing 2 which is divided into a first housing part 6 and a second housing part 8. The device 1 also has a securing means 4 in the form of a hook by means of which the device 1 can be suspended in a toilet bowl.

The housing 2 is also particularly suitable for containing toilet cleaning agents in gel form. For example, the housing can be designed to be transparent so that the colored toilet cleaner therein can be seen.

The first housing part 6 is designed as an appliance for containing toilet cleaning agent and in the embodiment shown has four chambers 10 which can be connected to one another in part and which are separated from one another at least in part by a separating wall 18. The chambers are exposed at the main opening 12 of the first housing part 6. The main opening 12 is covered by the second housing part 8. The first housing part 6 is completely closed except for the main opening 12.

The second housing part 8 has a plurality of flushing openings 20 designed as through-holes. The sum of the cross-sectional areas of the flushing openings is smaller than the cross-sectional area of the main opening 12.

In the embodiment shown, the second housing part 8 is plugged onto the first housing part 6 and is connected to the first housing part 6 in a stable but optionally also releasable manner.

In the embodiment shown in fig. 1 and 2, the flushing opening 20 is closed by an airtight and/or vapor tight cap 24 prior to use of the device 1. By means of the tab 26, the cover 24, which is designed as a membrane, can for example be pulled off from the second housing part 8, so that the flushing port 20 is exposed and the toilet cleaner arranged in the housing 2 comes into contact with the water entering through the flushing port 20.

The device 1 is designed such that, in the use position in which the device 1 has been suspended into a toilet bowl by the fixture 4, the main opening 12 faces the wall of the toilet bowl. The second housing part 8 is thus located on the rear side 16 of the device 1, whereas the securing means 4 in the embodiment shown are arranged on the front side 14. This has the following advantages: water running down the wall of the toilet bowl can be guided particularly well into the chamber 10 through the flushing opening 20 during flushing. To support this, the device 1 shown in fig. 1 and 2 has a shape that is curved in at least one dimension, which thus partly follows the shape of a toilet bowl. This enables the toilet cleaner to be flushed out particularly efficiently and uniformly.

The cover 24 may be transparent to allow for visualization of the toilet cleaner and/or the second housing part 8. This is particularly advantageous if an aesthetic effect is to be achieved by using a coloured toilet cleaner and/or by the specific arrangement and configuration of the flushing port 20, which is visible when purchasing the device 1 still provided with the cover 24.

Fig. 3 shows a further embodiment of the device 1, which differs from the embodiment shown in fig. 1 in that the second housing part 8 has a water-guiding element 22 arranged below or in the middle of the flushing opening 20, and that said water-guiding element protrudes from the second housing part 8 in order to guide more flushing water into the flushing opening 20 during operation.

Fig. 4 shows a further embodiment of the device 1, which differs from the embodiment shown in fig. 1 in that the cover 24 has a plurality of parts, here denoted 24' and 24", which can be torn/pulled off from each other individually and which are formed, for example, from a plurality of film layers. In this case, when using the device 1, the user can choose, depending on the cleaning intensity required, whether to tear/pull off only the first film and thus "activate" the product, expose a plurality of flushing openings, or at least tear/pull off one or more other films, thereby exposing more flushing openings, thus ensuring a stronger cleaning effect due to a higher flushing speed.

In the embodiment shown, the membrane 24' is removed by pulling the tab 26, which membrane covers the majority of the irrigation opening 20 in an airtight and/or steam-tight manner. By pulling the further tab 27, the further membrane 24 "is also removed, which covers only the flushing openings 20 arranged below the partition 29, i.e. the two inner flushing openings of the bottom row. In this way, the user can easily meter the effect of the toilet cleaner and increase the effect by removing the film 24 ". In the embodiment shown, the covers 24',24 "are designed as two adjacent areas of the same film, which are separated from each other by a perforated portion. Alternatively, however, they can also be designed as layers arranged one above the other. Such an embodiment is shown in fig. 12.

Fig. 5 and 6 show a further embodiment of the device 1, which differs from the embodiment shown in fig. 4 in that all lowermost flushing openings 20 are exposed only by tearing off/pulling off the membrane 24 ". As a result, if the membrane 24 "is not peeled off, an accumulation is formed in the device 1 because the water cannot be completely discharged. However, depending on the type of detergent, this may be beneficial.

The embodiment shown in fig. 5 also has a water guiding element 22.

Fig. 7 and 8 show another embodiment of a device 1 for containing a toilet cleaner. This further embodiment differs from the embodiment shown in fig. 1 and 2 in that the second housing part 8 has, in addition to the elements with the flushing openings 20, a flap 28 which is connected to the rest of the second housing part 8 by means of a hinge 30. The hinge 30, which is only schematically shown, can be designed, for example, as a living hinge.

The baffle 28 may be used to close the flush opening 20 prior to use. However, since it is often difficult to achieve such a closed tightness and/or water vapor tightness, it is possible to arrange another membrane as a cover on the closed flap 28, as shown in fig. 1 and 2, before using the device 1. However, the baffle 28 additionally or primarily serves as the water-directing element 22.

There can be a mechanically operated connection between the flap 28 and the second housing part 8 such that the second housing part 8 bends/buckles inwards into the housing 2 when the flap 28 is closed and the second housing part 8 protrudes slightly from the housing 2 when the flap 28 is opened. This makes it possible to design the baffle 28 flush with the edge of the first housing part 6, so that the cover 24 can be attached to the baffle 28 without problems.

As shown in fig. 8, the second housing part 8 in this embodiment is plugged/inserted onto the partition wall 18 of the first housing part 2 at a plurality of fixing points P. This is a particularly simple and stable type of attachment.

Fig. 9 and 10 show another embodiment of a device 1 for containing a toilet cleaner. This further embodiment differs from the embodiment shown in fig. 1 to 8 in that the cover 24 is arranged on the second housing part 8 and has a closure element 32 in the form of a "plug seal" with a gripping tab 34. To use the device 1, the user pulls the gripping tab 34 to remove the closure element 32. As a result, as shown in fig. 10, the lower second housing part 8 having a flushing opening not shown in the drawing is exposed.

An alternative embodiment is shown in fig. 11. In this embodiment, the opening in the cover 24 resulting from the removal of the closure element 32 is a common flushing opening for all chambers 10 of the device 1. In this case, the cover 24 is at the same time the second housing part 8. In the embodiment of fig. 11, a plurality of cutouts 25 are also provided in the lower region of the second housing part 8, which form low flushing openings after the cap 24 has been discharged and thus prevent accumulation.

In the embodiment shown in fig. 9 to 11, the cover 24 can also be designed with multiple layers, wherein the lower layer contains the flushing openings 20, and when the closure element 32 is removed, only the upper layer is partially or completely removed so as to expose the flushing openings. Such an embodiment is shown in fig. 12.

Fig. 12 shows an embodiment of the device 1, in which the cover is formed by two film layers 24' and 24", which are shown partially open for better understanding. The first cover 24' covers the entire main opening 12 and forms a water vapor-tight and gas-tight seal. When the device is in use, the first cover can be removed by pulling on the tab 26. The second cover 24 "is formed of a film layer disposed under the first cover 24' and has a plurality of through holes forming the rinse openings 20. The cover 24 "can also be removed by pulling on a tab (not shown). If the cap 24 "is also removed, the lattice structure 31 with the through holes also forming the rinse openings 20' is released. The total surface area of the flushing openings 20' is larger than the total surface area of the flushing openings 20, e.g. at least twice as large. Thus, with the cover 24 "removed, significantly more cleaning agent is generally flushed out than with the cover 24" not removed. The cover 24 "thus provides an enhanced function.

Lattice structure 31 can likewise be formed from a film layer or otherwise.

In particular, using suitable film lamination techniques, a film structure can be created that has the following functions:

1) The uppermost layer film: airtight and/or water vapor seal;

2) Intermediate film: different channel surface areas, increasing the opening surface area from top to bottom with an intermediate membrane;

3) The lowest layer film: the maximum required opening surface area for maximum product experience, while at the same time being safe to use-no product drop, water is purposefully introduced.

Fig. 13 to 17 each schematically show a plurality of views of the device 1 according to various embodiments of the invention. In each case a view of the rear side 16, a first sectional view and a second sectional view are shown. It can be seen here that the contour of the second housing part 8 follows the shape of the main opening 12 it covers. In particular, the second housing part 8 fits into the main opening 12.

Fig. 13 shows an embodiment of the device 1, which substantially corresponds to the embodiment shown in fig. 1 and 2. In the closed condition before use, the cover 24 is secured to the edge of the first housing part. Alternatively, the cover 24 can also be fixed, for example glued or welded, to the surface of the second housing part 8.

Fig. 14 shows a further embodiment of the device 1, which differs from the embodiment shown in fig. 7 in that in the closed state before use of the device 1 the flushing openings 20 are closed by a flap 36, each flushing opening having its own flap 36.

Fig. 15 shows the device 1 according to fig. 14 in an open state. In this state, the cover 24 is removed and the flap 36 is opened. The flap opens automatically when the cover 24 is removed, since the flap is under a corresponding pretension and acts as a water-guiding element in the open state.

Fig. 16 and 17 show a further embodiment of the device 1, which differs from the embodiments shown in fig. 13 to 15 in that the flushing opening 20 does not have a baffle, but the second housing part 8 has water-guiding elements 38 protruding from the surface of the second housing part 8 in front of each chamber 10.

In the closed state before use (as shown in fig. 16), the main opening 12 is closed by the cover 24 in an airtight and/or vapor-tight manner. If the cover is removed, the second housing part 8 springs back to the position shown in fig. 17, in which the water-guiding element 38 protrudes beyond the main opening 12. This has the advantage that: in the inactive position, the spring-loaded water-diverting member 38 allows the main opening 12 to be covered by the airtight and/or vapor-tight cover 24, which would not be readily achievable for a protruding water-diverting member 38.

List of reference symbols:

1. device and method for controlling the same

2. Shell body

4. Fixing device

6. First housing part

8. A second housing part

10. Chamber chamber

12. Main opening

14. Front side

16. Rear side

18. Partition wall

20. Flushing opening

22. Element for guiding water

24,24',24 "cover

25. Incision

26. Tab

27. Tab

28. Baffle plate

29. Partition part

30. Hinge

31. Lattice structure

32. Closure element

34. Gripping sheet

36. Baffle plate

38. Element for guiding water

P fixed point

Claims

1. A device (1) for containing a toilet cleaner, having

At least one fixing device (4) for fixing the device (1) in a use position in a toilet bowl;

a housing (2) comprising

At least one first housing part (6) which forms a receptacle for a toilet cleaning agent, has at least one main opening (12), is completely closed except for the at least one main opening (12), and

at least one second housing part (8) which controls the water supply to the toilet cleaner and is designed as a cover for at least one main opening (12), wherein the second housing part (8) has a plurality of flushing openings (20) through which water can be conducted to the toilet cleaner during flushing and dissolved toilet cleaner can be conducted out of the housing (2),

wherein the flushing opening (20) is formed by a through-hole in the second housing part (8) and the sum of the cross-sectional areas of the through-holes is smaller than the cross-sectional area of the at least one main opening (12),

wherein the through-hole is provided with a baffle (28, 36) which in the inactive state of the device (1) acts as a cover for the through-hole and which in the active state exposes the through-hole and directs water through the through-hole into the housing (2),

wherein in the inactive state the flapper (28, 36) is under a pretension held by the cap (24), and wherein when the cap (24) is removed due to release of the pretension, the flapper (28, 36) moves to the active state.

2. The device (1) according to claim 1,

wherein, in the use position of the device (1), the at least one main opening (12) of the first housing part (6) is oriented towards the wall of the toilet bowl.

3. The device (1) according to claim 1,

wherein the flap (28, 36) is connected to the second housing part (8) via a living hinge.

4. A device (1) according to one of claims 1 to 3,

wherein the flushing opening (20) is closed by a gas-tight and/or water vapor-tight cover (24) which can be removed before use.

5. The device (1) according to claim 4,

wherein the cover (24) has at least two parts and each of the at least two parts closes at least one flushing opening (20), wherein the at least two parts are separately removable from the housing (2).

6. The device (1) according to claim 5,

wherein the at least two portions are connected to each other by a perforated portion.

7. A device (1) according to one of claims 1 to 3,

wherein the main opening (12) is closed before use by a cover (24) having at least two stacked, individually removable membranes, wherein the membranes have through holes providing flushing openings (20, 20 '), wherein the total surface area of the flushing openings (20, 20') of the inner membrane is larger than the total surface area of the flushing openings of the outer membrane.

8. The device according to claim 7,

wherein the cover (24) has at least three stacked, individually removable films, namely a first outer film for airtight and vapor-tight sealing;

a second intermediate membrane having a through-hole providing a flushing opening (20) having a first cross-sectional area a; and

a third inner membrane having a through hole providing a flushing opening (20') having a second cross-sectional area a, wherein a > a.

9. A device (1) according to one of claims 1 to 3,

wherein at least the housing (2) is arranged in a gas-tight and/or water vapor-tight blister package.

10. A device (1) according to one of claims 1 to 3,

wherein the housing (2) has separate, at least partially separate chambers (10) for receiving separate portions of toilet cleaning agent, wherein each chamber (10) has at least one flushing opening (20).

11. A device (1) according to one of claims 1 to 3,

wherein a toilet cleaner in the form of a gel is arranged in the housing (2).

12. A device (1) according to one of claims 1-3, wherein the securing means (4) comprises suction cups or adhesive dots.