DE102012001541A1 - Drug delivery device and method of making a drug delivery device - Google Patents

Abstract

The invention relates to a dispensing device (1) for a toilet bowl (41), comprising a housing (2) with a front side (V) and a rear side (H) and a first chamber (19) for receiving a cleaning and / or disinfecting device. and / or water treatment and / or anti-limescale composition and / or any mixture of such compositions, wherein the first chamber (19) has at least one inlet (7) and at least one outlet opening (23), a second chamber (3a) having a gelled perfume (27a) and enclosing this gelled perfume (27a) so as to define a delivery surface (30a) of the gelled perfume (27a) and a suspension device (5) for attaching the housing (2) to a rim (27) 47) of the toilet bowl (41) such that the rear side (H) in the direction of a next wall (45) of the toilet bowl (41) and the front (V) towards a central region (43) of the toilet bowl ( 41) points. In this case, the housing (2) is designed such that, when the toilet bowl assembly is mounted in the toilet bowl (41) as intended, the inlet opening (7) of the first chamber (19) lies in the path of a flushing water (51) and the second chamber (3a) at least in some areas in the path of the rinsing water (51), that the delivery surface (30a) of the gelled perfume (27a) is at least partially flushed during a rinsing process. The second chamber (3a) is formed in combination with the gelled perfume (27a) such that the dimensions of the delivery surface (30a) remain substantially the same upon evaporation and / or overflow. In addition, the invention relates to a manufacturing method for such a drug delivery device (1).

Description

The present invention relates to a drug dispenser for a toilet bowl and to a method of making such an active agent dispenser.

The European patent EP 1 444 319 B1 shows, for example, a drug delivery device, which is characterized essentially by the fact that in a first chamber of a housing a cleaning, disinfecting, water-treating or against calcification composition is maintained and in a second chamber of the same housing a gelled perfume. By means of a hanger, this drug delivery device can be hung in the toilet bowl, and the second chamber should, in order to allow a uniform and undisturbed delivery of perfume, not be in the way of flushing the toilet bowl.

By means of such a device, it is possible to run the composition, which is located in the first chamber, in a flushing of the toilet of rinse water, so that a certain amount of the composition is flushed into the toilet bowl. At the same time, the gelled perfume scents the ambient air permanently. Thus, a distinction is made between a first component of the active substance delivery device, which is intended to enter the rinsing water of the toilet, and a second (fragrance) component, which passes into the ambient air.

While the first component is dispensed only when a purge is actually performed by operating the toilet flush, the second component is delivered to the ambient air at a substantially constant rate. However, such an automatic delivery mechanism of the fragrance component does not take into account that the requirements for the ventilation of the toilet room with very frequent use of the toilet bowl tend to be significantly greater than when the toilet is rarely used. For example, in household use it is to be expected that if an owner of an apartment has invited many guests, his toilet bowl will be used very frequently during the visit, and there will be a particular need to remove unpleasant odors through adequate scent delivery. be covered. On the other hand, on the other hand, it is desirable that whenever the owner only uses the toilet alone or even for a time is out of the house, for example, during holiday periods, only a moderate fragrance delivery in the form of a basic tax. This would also ensure that sufficient perfume is maintained throughout the life of the first component to be dispensed into the rinse water without unnecessarily storing large quantities of perfume in the second chamber.

Against this background, it is an object of the present invention to provide a drug delivery device whose fragrance delivery into the ambient air from the second chamber differentiated depending on the frequency of use of the respective toilet bowl.

This object is achieved by a drug delivery device according to claim 1 and by a method according to claim 15.

• a) einer ersten Kammer zum Aufnehmen einer Reinigungs- und/oder Desinfektions- und/oder Wasserbehandlungs- und/oder Antikalkzusammensetzung und/oder eines beliebigen Gemischs derartiger Zusammensetzungen, wobei die erste Kammer mindestens eine Einlass- und mindestens eine Auslassöffnung aufweist,
• b) einer zweiten Kammer, die ein geliertes Parfüm beinhaltet und dieses gelierte Parfüm so umschließt, dass sie eine Abgabe-Oberfläche des gelierten Parfüms definiert, und
• c) einer Aufhängevorrichtung zum Einhängen des Gehäuses an einem Rand der Toilettenschüssel derart, dass die Rückseite in Richtung einer nächststehenden Wand der Toilettenschüssel und die Vorderseite in Richtung eines zentralen Bereichs der Toilettenschüssel weist.

Accordingly, a toilet bowl active substance dispenser according to the invention comprises a housing having a front and a back and

• a) a first chamber for receiving a cleaning and / or disinfecting and / or water treatment and / or anticalcifying composition and / or any mixture of such compositions, the first chamber having at least one inlet and at least one outlet opening,
• b) a second chamber containing a gelled perfume enclosing this gelled perfume to define a delivery surface of the gelled perfume, and
• c) a suspension device for suspending the housing at an edge of the toilet bowl such that the back faces towards a wall nearest the toilet bowl and the front towards a central region of the toilet bowl.

• – die Einlassöffnung der ersten Kammer im Weg eines Spülwassers liegt und
• – die zweite Kammer zumindest bereichsweise so im Weg des Spülwassers liegt, dass die Abgabe-Oberfläche des gelierten Parfüms bei einem Spülvorgang zumindest bereichsweise überspült wird.

In this case, the housing is designed such that when properly hanged the toilet bowl assembly in the toilet bowl

• - The inlet opening of the first chamber is in the path of a rinse water and
• - The second chamber is at least partially in the way of the rinse water that the delivery surface of the gelled perfume is at least partially flushed during a rinse.

The second chamber, in combination with the gelled perfume, is designed so that the dimensions of the delivery surface remain essentially the same upon evaporation and / or overflow.

The first chamber may be provided with a cover in which, for example, the inlet and the outlet opening is installed. However, it can also be designed without a separate cover. The inlet opening and the outlet opening may be two separate openings, but they may also be realized as a combined inlet / outlet opening. Furthermore, both a plurality of inlet openings and a plurality of outlet openings may be provided, and preferably additional openings which at least do not primarily serve to pass rinse water, but rather to the continuous delivery of fragrances contained in the respective composition or mixture.

In principle, the active substance dispensing device can also be kept in the first chamber without the corresponding mixture or the corresponding composition, but the mixture or composition is preferably contained in the first chamber. In the former case, a corresponding retrofit kit of a mixture or a composition of the type mentioned would be used for (re-) filling the first chamber.

The suspension is preferably designed for removably hanging the housing at the edge of the toilet bowl, that is, so that it can be unhooked from the toilet bowl again, without having to be destroyed before. As a result, for example, a refilling, in particular the first chamber, are performed.

In contrast to the above-mentioned prior art, the present invention therefore turns away from keeping the second chamber out of the way of the rinse water, but it proceeds according to the exact opposite principle: The second chamber is targeted at least partially in the path of the rinse water, namely such that the gelled perfume is at least partially flushed over at its delivery surface. This means that the housing has a geometry that allows such over-flushing. On the one hand, this can be achieved by positioning the dispensing surface in the housing so that the overflow is possible, and on the other hand by the fact that the housing as a whole is dimensioned and designed in such a way that an overflow of the widest possible areas of the housing, namely at least the first chamber and partially the second chamber is possible.

In particular, in the context of the invention, it is intended that the second chamber is combined with the gelled perfume in such a way that the gelled perfume has an essentially always the same dispensing surface. The term "substantially" refers to the fact that the delivery surface can have certain height tolerances in itself, which can be equalized or more pronounced when washing over or when dispensing fragrances. These tolerances are therefore not taken into account here; Instead, it is assumed that the delivery surface is approximately planned. It is thus decidedly avoided that the perfume is reduced or removed all around in its dimensions, but it should be reduced at most in one spatial direction, namely the spatial direction transverse to the plane of extension of the delivery surface.

On the one hand, this effect is achieved in that the gelled perfume is held in the housing in such a way that flushing at the edge regions of the dispensing surface or backwashing on a surface beyond the dispensing surface is as far as possible prevented. On the other hand, it is prevented by the nature of the perfume itself, that the perfume is removed during the life of the composition or the mixture in the first chamber due to its scent delivery or overflow at its edge regions of the delivery surface. Corresponding possible materials for such a gelled perfume are exemplified below.

The effect of the drug delivery device according to the invention is that the gelled perfume in the second chamber is specifically moistened. In fact, the inventors have surprisingly found that, contrary to the fears implicitly expressed in the prior art, such overflushing does not have to have a negative effect on the scent delivery effect of the gelled perfume. On the contrary, it has been found in experiments that an increased release of fragrance, ie secretion of the gelled perfume, results directly following the rinsing. This means that just when there is a particularly high need for perfume delivery, namely after actuation of the toilet flush, this perfume delivery is increased effectively and without further mechanical or similar measures. If the flushing of the toilet bowl is therefore operated more frequently, then more perfume fragrance is automatically emitted than at times of low frequency of use. At the same time it is essentially always the same Dimensioning the delivery surface of the gelled perfume achieved that even over a longer useful life of the drug delivery device no significant reduction effects of the delivery of perfume can be seen. This results in the synergistic effect of increasing the power output shortly after a flushing operation while maintaining a substantially constant base output of the gelled perfume throughout the life of the drug delivery device. This life is defined by the life of the composition contained in the first chamber or the mixture contained therein.

As the gelled perfume, for example, a composition consisting of a perfume ingredient, a solvent ingredient, a thickener ingredient and optionally a dye ingredient can be used. The following composition has been found to be particularly effective, both in terms of the output of the fragrance and the rinsing resistance of the overall composition: Perfume 50-80% dipropylene glycol monomethyl ether 0-30% (eg Dowanol DPM from Dow, Arcosolv DPM from Lyondellbasell) cellulose acetate butyrate 10-20% (eg Eastman CAB-381-0.5) dye optional as required

In this composition, the following weight losses were recorded in laboratory experiments at 40 ° C for two different perfumes (citrus or fresh scented), once in the dry, that is not rinsed with water or moistened, and once in the water-rinsed state: Perfume 1 (citrus) Perfume 2 (fresh) Weight loss (%) dry washed over with water dry washed over with water after 1 h 0.33 2.01 0.27 3.79 after 2 h 0.34 2.55 0.32 4.43 after 3 h 0.66 3.10 0.38 5.46 after 4 h 0.87 4.29 0.59 6.81

It can therefore be seen that, when the respective perfume was perfused with water, it was possible to achieve a much higher output of volatile substances, that is to say essentially of perfume, by a multiple. This results in an equally enhanced scent effect after flushing with rinse water in a toilet bowl.

At around 15%, the proportion of solvent in the composition is relatively low; The composition is further characterized by the fact that it has no stored water content. As a result, a water-based separation effect when washing over the gelled perfume is largely reduced. The perfume should namely, despite the overspray not or only slightly dissolve in water to minimize surface losses due to rinsing.

The present composition was also placed on a plastic disc for testing at room temperature in water and thus tried to dissolve the composition with stirring. After two hours (corresponding to about 300 flushes with 20 to 30 seconds of water contact), depending on the perfume used, between 1.9% and 5.4% of the gelled perfume dissolved. This means that the jellied perfume, with the use of such a composition during the life of the drug delivery device by the number of rinses until complete dissolution of the composition or the mixture in the first chamber (after about 200 to 400 rinses depending on the toilet version) is given by the over-flushing with water in addition to the perfume delivery in the air and a part in the water itself gives and thus an additional freshness effect is achieved. The overflow of the gelled perfume thus does not have the effect that it would be used up to the end of the life of the substances contained in the first chamber.

• a) Bereitstellung einer ersten Kammer des Gehäuses zum Aufnehmen einer Reinigungs- und/oder Desinfektions- und/oder Wasserbehandlungs- und/oder Antikalkzusammensetzung und/oder eines beliebigen Gemischs derartiger Zusammensetzungen, wobei die erste Kammer mindestens eine Einlass- und mindestens eine Auslassöffnung aufweist,
• b) Bereitstellung einer zweiten Kammer des Gehäuses, die ein geliertes Parfüm beinhaltet und dieses gelierte Parfüm so umschließt, dass sie eine Abgabe-Oberfläche des gelierten Parfüms definiert, und
• c) Bereitstellung einer Aufhängevorrichtung zum Einhängen des Gehäuses an einem Rand der Toilettenschüssel derart, dass die Rückseite in Richtung einer nächststehenden Wand der Toilettenschüssel und die Vorderseite in Richtung eines zentralen Bereichs der Toilettenschüssel weist,

wobei das Gehäuse derart ausgebildet wird, dass bei bestimmungsgemäßer Einhängung der WC-Körbchenanordnung in der Toilettenschüssel

• – die Einlassöffnung der ersten Kammer im Weg eines Spülwassers liegt und
• – die zweite Kammer zumindest bereichsweise so im Weg des Spülwassers liegt, dass die Abgabe-Oberfläche des gelierten Parfüms bei einem Spülvorgang zumindest bereichsweise überspült wird,

und wobei die zweite Kammer in Kombination mit dem gelierten Parfüm so ausgebildet ist, dass die Abmessungen der Abgabe-Oberfläche bei einem Ausdampfen und/oder Überspülen im Wesentlichen gleich bleiben. A method according to the invention for producing a dispensing device for a toilet bowl, wherein the active substance dispensing device has a housing with a front side and a rear side, comprises at least the following steps:

• a) providing a first chamber of the housing for receiving a cleaning and / or disinfecting and / or water treatment and / or anticalcifying composition and / or any mixture of such compositions, the first chamber having at least one inlet and at least one outlet opening,
• b) providing a second chamber of the housing containing a gelled perfume and enclosing this gelled perfume to define a delivery surface of the gelled perfume, and
• c) providing a suspension device for hanging the housing on an edge of the toilet bowl in such a way that the rear side points in the direction of a wall nearest the toilet bowl and the front side points in the direction of a central region of the toilet bowl,

wherein the housing is formed such that when properly hanged the toilet bowl assembly in the toilet bowl

• - The inlet opening of the first chamber is in the path of a rinse water and
• The second chamber lies in the path of the rinsing water, at least in regions, such that the delivery surface of the gelled perfume is at least partially flushed during a rinsing process,

and wherein the second chamber is formed in combination with the gelled perfume such that the dimensions of the delivery surface remain substantially the same upon evaporation and / or overflow.

In other words, an active substance delivery device according to the invention is produced by providing the individual components already mentioned above and by combining them.

Further particular advantageous refinements and developments of the invention will become apparent from the dependent claims and the following description. In this case, the method can also be developed according to the dependent claims for drug delivery device.

Preferably, the second chamber is designed so that it is surmounted at least partially by the edge of the toilet bowl when properly suspending the drug delivery device in the toilet bowl. This can be realized in that the entire housing is dimensioned and shaped by its geometry that it is surmounted overall (at least in certain areas) from the edge of the toilet bowl. Alternatively, the second chamber in the housing may be arranged so that it (at least partially) is arranged under the edge of the toilet bowl when properly suspending the drug delivery device. Other areas of the drug delivery device need not necessarily be arranged below the edge. Such an overhanging of the edge of the toilet bowl via the second chamber causes in a particularly simple manner that the second chamber is located at least partially in the path of the rinse water. In fact, it can hardly be prevented that turbulences of the rinsing water in the edge region of the toilet bowl lead to an at least partial overflow of the second chamber. The overflow of the second chamber is so simplified and the amount of the second chamber flushing rinse water even increased. As a result of the geometry and arrangement of the second chamber, it is even possible to set relatively precisely how much rinse water overflows the second chamber and thus the dispensing surface.

It has proved to be particularly advantageous when the housing tapers from a middle region, on which the suspension device is fastened, toward at least one end region in the transverse direction to a suspension direction defined by the suspension device, preferably tapering. As a result, the housing becomes narrower towards this end region and can therefore be more easily flushed there by the flushing water in the toilet bowl. Here, the central area serves to "catch" the rinse water centrally or to accumulate something, whereby it is directed into the tapered end area. In this context, it is particularly preferred if the second chamber is positioned in such an end region. In such a case, it is precisely the second chamber in the end region which can be particularly easily washed over by the rinsing water. Such a taper can take place both along a sectional plane which is substantially perpendicular to the plane of the water level in the toilet bowl, as well as in a substantially parallel sectional plane to the level of the water level in the toilet bowl. The flushing effect by diversion from the central region in the direction of the respective end region results in particular when the taper in the sectional plane is perpendicular to the plane of the water level. A combination of tapers in the two cutting planes can also be provided.

So it is also preferred that the housing is convexly formed on its front side and / or on its back at least partially. In this way, (at a convex shape at the back), the drug delivery device can conform to the concave surface profile of the toilet bowl or (in a convex shape on the front) are guided below the edge of the toilet bowl.

The second chamber may in principle be provided with a cover which partially shields the dispensing surface from an outside of the housing. Such a cover then has inlet or outlet openings, wherein the rinse water can enter via the inlet openings and exit from the outlet openings again. Through both types of openings, the fragrance can be dispensed. Again, inlet and outlet ports may be combined as common openings. Again, it is possible to provide one or more such (inlet and / or outlet) openings. It is preferred, however, that the second chamber is formed at least on its side with the release surface at least partially free of cover, this has the effect that a uniform delivery over the entire delivery surface of the gelled perfume can be done and not partially by a cover is prevented. In addition, it is thus ensured that the rinse water which overflows the gelled perfume does not remain unnecessarily long in contact with the gelled perfume, so that on the one hand a delay in the delivery of the toilet after flushing the toilet and on the other hand an unnecessarily strong solution of the jellied perfume by standing Rinse water is avoided.

Since the second chamber is designed to be overflowed by the rinse water, it may, in contrast to the above-cited prior art, also on the back, that is mounted in the direction of the wall of the toilet bowl. It is nevertheless preferred that the second chamber is arranged at the front and at least partially open towards the central region of the toilet bowl. On the one hand, this results in increased scent delivery of the gelled perfume in the second chamber and, moreover, it is possible to inspect the gelled perfume without unhooking the drug delivery device from the toilet bowl. As a result, a user can at any time recognize whether sufficiently gelled perfume is still kept in the second chamber and, if appropriate, ensure timely replacement of the active substance delivery device. Precisely because the perfume is anyway such that its delivery surface is not significantly reduced in the course of its life, it is also assumed that it does not become unsightly over time, such as cracking in the delivery surface o. Ä. In addition, the gelled perfume, especially with appropriate color, also develop a certain aesthetic value.

In principle, with a suitable choice of the gelled perfume, a constant delivery surface can be realized simply by virtue of the gelled perfume having such low water solubility and so low a mass reducing effect on the delivery of perfume that no shrinkage effect can occur along the edges of the delivery. Surface is recognizable. It is particularly preferred that the delivery surface of the gelled perfume by walls of the second chamber at least partially, preferably all around, is limited. Such walls effectively prevent backwashing of the gelled perfume by inhibiting the ingress of rinse water along the edges of the delivery surface. Therefore, it is particularly preferred that the gelled perfume is protected by all-round Wandrungen before such backwashing.

According to one embodiment of the invention, the second chamber comprises a number of anchoring elements which fix the gelled perfume in a designated anchoring position within the second chamber with respect to at least one spatial direction. Such anchoring elements thus serve to maintain the position of the gelled perfume along a plane parallel to the plane of the delivery surface, but at least in one of the two main directions of extension of this parallel plane, so that a lateral slippage and thus unwanted detachment of the gelled perfume of the the delivery surface opposite surface of the gelled perfume can be at least largely prevented.

It has proved to be particularly effective if the second chamber comprises a plurality of anchoring elements, which are spaced from each other and from an edge of the second chamber depending on a viscosity of the gelled perfume that the gelled perfume when properly suspended in the toilet bowl is substantially unchanged in its position in the second chamber, preferably held so that a gap-free connection between the edge of the second chamber and the gelled perfume is ensured. The distances of these anchoring elements from each other or from the edge of the second chamber are chosen depending on the viscosity of the gelled perfume. Stated differently, the gelled perfume may only have one such viscosity have, which are adapted to the distances of the anchoring elements from each other and the anchoring elements from the respective edge of the second chamber. This is true in the sense that the gelled perfume is held firmly in place by the anchoring elements in combination, optionally with the rim. In particular, it is advantageous if no gap results between the edge of the delivery surface of the gelled perfume and the edge of the second chamber, so that the edge of the second chamber and the edge of the delivery surface merge directly into one another.

Such conditions are given for example in a drug delivery device with anchoring elements at a distance of at most 1 cm from each other and at a distance of at most 0.5 cm from the edge of the second chamber when the gelled perfume has viscoelastic properties in use, d. H. is present as a solid whose deformation behavior includes both elastic and viscous behavior patterns.

In view of the conventional sizes of drug dispensers in the toilet area, it has been found that directly adjacent anchoring elements should be spaced apart as far as possible at a distance of at most 30 mm, preferably at most 20 mm, particularly preferably at most 10 mm from each other, for example in the case of the gelled perfume has been stated above, bring about a sufficient positional fixation. With regard to the shortest distance between the anchoring elements closest to the edge of the second chamber and this edge, it has been found that this should be at most 20 mm, preferably at most 10 mm, particularly preferably at most 5 mm.

The anchoring elements can basically be designed in the form of arbitrarily complicated geometries, which for example protrude from the edge of the second chamber or press from above onto the delivery surface of the selected perfume. In this sense, the anchoring elements are also referred to as holding elements for the gelled perfume. It has proved to be particularly simple for the production, and nevertheless sufficiently effective, when the anchoring elements comprise pins or the like projecting from a back plane of the second chamber. Such pins may have a rounded as well as an angular cross-section or combinations thereof. By projecting from the back plane of the second chamber into the region of the gelled perfume, a stabilizing effect of the position of the gelled perfume results parallel to its delivery surface. Such pins can, for example in the context of injection molding, particularly easy to be integrated in a housing, so that there is no appreciable additional effort to provide the anchoring elements.

The positioning of the individual anchoring elements preferably takes place in a uniform pattern within the second chamber, for example in row and row arrangements, each with uniform spacing from one another in at least one spatial direction. However, depending on the shape of the second chamber overall, it may also be useful to arrange the anchoring elements in whole or in part following the shape of the outer boundaries of the second chamber. This means in particular that anchoring elements are arranged in the direction of the outer boundary of the second chamber at a certain predefined maximum distance, while in the inner region of the second chamber only a few anchoring elements are present or the anchoring elements are arranged at a greater distance from each other.

Preferably, the anchoring elements, in particular pins, are designed so that they are at least in the initial state of the drug delivery device, d. H. do not protrude from the delivery surface of the gelled perfume at the front of the drug delivery device prior to first intended use or overflow. The height of the anchoring elements in the chamber in the direction of the front of the drug delivery device is therefore less than the filling level of the gelled perfume in the relevant chamber.

In principle, both the first chamber and the second chamber can be positioned anywhere in the housing. However, it has proved to be particularly effective for handling when the first chamber is arranged at least in a central region of the housing, to which the suspension device is attached. This ensures that the first chamber, which is provided for the liquid delivery of the substances contained in it, is always positioned optimally below the edge of the toilet bowl, so that the main amount of flushing water that hits the housing as a whole, also passed through the first chamber becomes. The first chamber may extend from the middle region also in areas further away from the middle region, for example those (end) regions which serve for an additional fragrance delivery, while the actual holding of the composition or of the mixture takes place in the first chamber in the middle region.

A further development of the invention consists in that the active ingredient delivery device comprises a third chamber (possibly even further additional chambers), which is preferably constructed identically to the second chamber. As "identical" in this case, a mirror-inverted identical geometry of the second and third chamber is referred to. The third compartment may also contain a gelled perfume, for example the same gelled perfume as the second compartment. In the latter case, the division into a second and a third chamber essentially serves aesthetic purposes, as it ultimately equals a division of the second chamber into two smaller chambers. Preferably, the third chamber includes a filling that is different from the contents of the first and second chambers. This may, for example, once again be a composition or a mixture which is to be rinsed into the toilet bowl via the rinsing water, or a (jellied) perfume. In the case of a perfume filling the second and the third chamber so different perfumes are kept in the second and third chamber, resulting in an optimized fragrance mixing effect. For example, a heavier-evaporating perfume may be disposed in the third chamber while a lighter-evaporating perfume is disposed in the second chamber. Such a combination can serve to increase the lifetime of the drug delivery device or to effect further differentiation of the basic delivery amount over the lifetime of the drug delivery device. In particular, it can also be provided that only the second chamber or the delivery surface of the gelled perfume contained in it is flushed by the rinse water of the toilet bowl, while the third chamber is realized so that when properly suspending the drug delivery device no or only a very small Contact to the rinse water is done.

A particular geometric configuration of the drug delivery device with a second and a third chamber is that the second and the third chamber are arranged on wings, which are located on two opposite end portions of the housing, preferably along a transverse direction to a hanging direction defined by the suspension are spaced apart. The second and the third chamber are thus located on either side of a middle region of the active substance delivery device or of the housing, so that the widest and most differentiated delivery of (fragrance) substances results. Thus, from the first chamber liquefied active ingredient in the rinse water, from the second chamber volatile perfume to the outside air and from the third chamber optionally liquefied active ingredient and / or volatile perfume. The spatial arrangement of the second and third chambers on wings thus means that the delivery of different substances can be differentiated, wherein the spacing of the second and third chambers by arrangement in the different wings of the drug delivery device can serve a better distribution of the different substances.

As an important parameter within the scope of the invention, the dimensioning of the delivery surface (s) of the gelled perfume or of the gelled perfumes can serve. It generally applies that the larger the (added) delivery surface, the more perfume can be released to the ambient air. Therefore, it is preferred that the total area of the delivery surface (s) of the gelled perfume (s) is at least 300 mm ² , preferably at least 500 mm ² , more preferably at least 800 mm ^{2 in} size. Such an area ensures a sufficient release of perfume to the ambient air; The upper limit for the area of the delivery surface (s) may preferably be set at 10,000 mm ² .

In addition to the surface area of the delivery surface, its ratio to the depth of the gelled perfume in the second and / or third chamber can also play a significant role. It has been found in experiments that it is sufficient if the square root of the amount of the delivery surface of the gelled perfume or the gelled perfumes has a ratio to a depth of the gelled perfume within the second and / or third chamber of at least 1.5: 1, preferably at least 2: 1, more preferably at least 2.5: 1. So there is a relatively low depth compared to the delivery surface (s) before. The upper limit of this ratio is preferably a ratio of 20: 1, particularly preferably 10: 1, in order to ensure that even with larger delivery surfaces there is still a sufficient depth of the gelled perfume in the respective chambers. The depth of the gelled perfume is preferably at least 3 mm, more preferably at least 5 mm, regardless of the size of the respective delivery surfaces. This ensures, in particular, a sustainable scenting of the ambient air, since a sufficient amount of perfume substances can be provided via the depth of the respective gelled perfume.

In principle, it is possible to connect the first and the second chamber (as well as otherwise the first and the third chamber and the second and the third chamber) to one another, since both in the way of Rinse water lie. In such a case, it is particularly advantageous if the second chamber is positioned upstream in the rinse water stream and the second chamber thereof downstream, so that the moistening effect in the second chamber is such that no compositions from the first chamber onto the delivery surface of the gelled Perfumes arrive in the second chamber. Analogously, an arrangement of the third chamber with a gelled perfume in relation to the first chamber should be understood. It has proved to be particularly effective if the first chamber and the second chamber (and correspondingly the first and the third chamber, preferably also the second and the third chamber) separated from each other, ie, isolated from each other against liquid passage. As a result, the gelled perfume can be protected in a particularly effective manner from the composition or the mixture from the first chamber. First and second (or third) chamber are therefore washed separately from each other by different areas of the rinse water.

The overflushing of the second chamber by the rinsing water of the toilet bowl can in principle be realized purely on the basis of geometric arrangements or the overall design of the active substance delivery device. It has proven to be a particularly expedient and therefore effective type if the second chamber comprises at least one inlet recess, which is designed so that the rinsing water is passed through the inlet recess when the active substance dispensing device is suspended as intended. Such an inlet recess can thus be understood as a kind of supply channel to the delivery surface of the gelled perfume and be arranged for example within an edge (or a wall) of the second chamber. It directs the rinse water in the direction of the delivery surface, whereby a corresponding dosing effect can be achieved.

In the case of toilet bowls, a distinction can basically be made between so-called flat-rinsers and so-called "deep-dishwashers". Flat-bed washers have a kind of step inside the bowl, while deep-dish washes are essentially funnel-shaped, leading directly into the toilet's siphon. Particularly preferably, it is provided that the second chamber is at least partially in the way of flushing a flushing toilet bowl when intended suspension of the drug delivery device that the delivery surface of the gelled perfume (in the second chamber) is flushed at least partially in a flushing. The drug delivery device is thus formed in its geometry and / or the arrangement of the second chamber so that the overflushing of the second chamber at least works in Tiefspülern. This represents a special challenge in that the rinsing water in the case of deep rinsers reaches the siphon in a relatively targeted manner and without much turbulence in a rinsing flow. Therefore, it is precisely in this case necessary to specially position the second chamber and make it geometric, so that a flush in all conventional toilet bowls is possible.

As regards the contents of the first compartment of the active substance delivery device according to the invention, it is preferred that the composition listed under a) or the mixture listed under a) is present in the form of a tablet. This tablet preferably comprises a detergent compartment with a detergent composition and a chlorine compartment separated from the detergent compartment with a chlorine component, at least one or a portion of a surface of the chlorine compartment being uncovered by the detergent composition prior to its intended use. The provision of compositions or mixtures in tablet form means that the first chamber can be particularly easily filled and also refilled. Thus, the manufacturer is an exact fine dosing of various ingredients possible, for example, the chlorine components and the cleaner composition.

The (cleaner) tablet may be a two- or more-phase tablet, preferably in the form of a detergent compartment with an integrated chlorine compartment or vice versa. Two-phase or multi-phase means that at least two phases, solid-solid, solid-liquid, solid-gel-like are present. Each phase can form its own compartment, such as its own tablet or a separate part of a tablet. If a gel-like or liquid phase is present, then these are usually housed in a solid envelope, for example a plastic envelope or a coating, which, for example, only dissolves or becomes permeable to the respective component upon contact with water. Preferably, both the detergent compartment and the chlorine compartment are solid phases. This can also be achieved, for example, by applying a solution to a solid phase. An example of such a separate embodiment is a so-called tab-in-tab variant, in which the chlorine component is made available in a, often smaller, chlorine compartment or a chlorine tablet and then integrated into a detergent compartment or detergent tablet. In principle, an embodiment with reverse construction, for. As a chlorine compartment with integrated detergent compartment, possible. Since, however, as a rule the amount of the chlorine component is less than the amount of the cleaner component, in most cases the first variant is one of the cleaner composition at least partially surrounded chlorine compartment preferred. Therefore, for the sake of simplicity, this variant is assumed below, this also including the reverse arrangement, unless otherwise stated.

In such a two- or multi-phase tablet, the individual components are therefore present in separate compartments. Such separate compartments can be carried out, for example, in so-called combination products in which the components for the detergent compartment and a chlorine compartment integrated therein are first separately mixed and pressed or alternatively extruded and only then combined with one another. This reduces the risk of intimate contact of the chlorine component with the cleaner composition, since then z. B. is present only at the low in relation to the total volume interface between the chlorine compartment and detergent compartment contact. For this reason, an improved stability of the ingredients sensitive to chlorine-containing compounds in the detergent tablet can be achieved. It is also conceivable to extrude the detergent composition and / or a barrier layer and / or the chlorine component together by means of a coextrusion process.

The cleanser composition comprises at least one surfactant-containing cleaning agent and preferably a surfactant mixture having a surface-active effect in order to dissolve and remove as far as possible the deposits and soiling in the toilet bowl during each flushing process. Usually, the cleaner composition is designed so that it dissolves in ordinary use only over a period of several days to several weeks.

The chlorine component may be any chlorine-containing reagent which has a cleaning action-promoting action with water, namely, primarily, a disinfecting and bleaching effect due to the release of chlorine-containing compounds. Released chlorinated compounds having such an effect may be, for example, free chlorine, but also hypochlorites. The chlorine component is preferably selected to be stable under normal ambient conditions, i. H. in a dry or slightly humid environment, is largely stable, so that no or only small amounts of free chlorine or hypochlorite are released under these conditions.

In such a drug delivery device with detergent compartment and chlorine compartment, it is particularly preferred that the tablet is arranged in the first chamber, that they with the surface of the chlorine compartment uncovered by the detergent composition and / or a barrier layer adjacent to the detergent composition in the direction of a full-surface wall of the first chamber points. Such a wall is particularly preferably opposite the inlet opening of the first chamber, and the arrangement of the chlorine compartment with its soluble, d. H. unprotected side on just this wall causes the chlorine component is protected from too rapid release. The arrangement of the chlorine compartment on the wall thus serves to protect the chlorine compartment against too much flushing with rinse water and thus ultimately the slower, ie more controlled release of the chlorine component in the rinse water. Such an arrangement is particularly advantageous in the context of the present invention, in which indeed the gelled perfume comes into contact with the rinse water. If too much of the chlorine component dissolved in the rinse water and this came with too much chlorine added rinse water in contact with the gelled perfume, so etching effects on the delivery surface of the gelled perfume could result, it should be avoided if possible. Overall, the measure of a wall-side arrangement of a chlorine compartment with a chlorine component is a tried-and-tested means of delaying and controlling the release of the chlorine component. This ultimately increases the longevity of the tablet in the first chamber.

According to an advantageous development of such a tablet, the detergent compartment and the chlorine compartment are at least partially separated by a barrier layer, and at least one or a part of the surface of the chlorine compartment is uncovered by the cleaner composition and the barrier layer before the intended use.

At least one or a part of a surface of the chlorine compartment is preferably neither directly nor indirectly covered by the cleaner composition nor by the barrier layer before the intended use. "Partially separated at least in part by a barrier layer" means that the detergent compartment and the chlorine compartment are mechanically, in particular partially or completely, in communication via the barrier layer, which is largely stable under the respective conditions of use, so that the detergent tablet is present with defined proportions. In particular, the barrier layer has the function that at least the major part of the cleaner composition is not in direct contact with the chlorine component during storage and secondly during use. The advantage of this is that the components which are unstable with respect to chlorine-containing reagents, such as, for example, most surfactants, dyes, fragrances, etc., are present decomposition or fading during storage and for a prolonged period during normal use or intended use.

In a preferred embodiment of the detergent tablet, the barrier layer may be formed from a material and / or in a thickness such that it dissolves more slowly during the intended use, in particular in contact with water, than the detergent compartment and the chlorine compartment. It can thereby be achieved that the barrier layer is largely stable and decomposition of the chlorine-unstable ingredients into the detergent compartment is largely avoided.

In this case, it is particularly preferred that the smaller compartment, usually the chlorine compartment, is surrounded on several sides by the barrier layer and optionally the respective other compartment. It is therefore expedient to use the smaller compartment in a recess of the other compartment, wherein the barrier layer covers both the bottom area and the side areas. For example, the barrier layer may also go beyond the interfaces between the two compartments. An example would be a tab-in-tab variant in which two tablets of different sizes are combined as compartments. For example, a smaller cylindrical tablet can be sunk in a likewise cylindrical depression of a larger tablet. In this case, the barrier layer can be attached both to the bottom, the sides and in a part of the protruding from the recess top of the smaller tablet or the larger, surrounding the smaller tablet tablet to further complicate the direct contact between the chlorine component and the cleaner composition , By virtue of this arrangement, the thickness of the barrier layer necessary to ensure the corresponding solution speeds can usually already be set in a suitable range.

In an alternative embodiment, however, it is also possible, for example, to use a material for the barrier layer whose solubility is inferior to the surrounding materials of the detergent compartment or of the chlorine compartment. When inferior in solubility, the cleaner composition of the detergent compartment and the chlorine component of the chlorine compartment tend to dissolve faster than the barrier layer, so that the tendency for separation of the two components from the barrier layer is much less than in conventional systems. The advantage is that the two compartments remain separated for a longer time even in use.

In such a detergent tablet with z. Example, a chlorine compartment integrated into a detergent compartment, the chlorine component, in particular the not covered with a barrier layer part of the chlorine compartment, preferably coated with a complete or partial coating or a coating as an additional protective layer for storage, so that no direct contact between the chlorine component and the purifier mass is given. For example, the chlorine compartment may be shrink-wrapped in a slightly water-soluble protective sleeve before it is glued into the detergent compartment by means of a barrier-type adhesive. In this embodiment, the chlorine component is then indirectly covered by the barrier layer at least in the areas adjacent to the detergent compartment. Such a protective layer usually fulfills a protective effect against the intended use, for example during storage or handling during production, but has no effect as a barrier layer. In particular, the stability of the ingredients of the cleaner composition can be maintained over several years. Such a protective layer can be, for example, a polymer film, in particular a polyvinyl alcohol film, or a coating of such a material.

In a further preferred embodiment, the barrier layer is at least partially formed by an adhesive which holds the chlorine compartment in the detergent compartment or the detergent compartment in the chlorine compartment. So z. B. the function of a barrier layer also used for connecting or gluing the two tablets means, such as an adhesive take over. This is introduced during the manufacturing process of the detergent tablet according to the invention, for example in molten or other liquid form in a recess of a detergent and distributed by pressing a chlorine compartment in this depression in the spaces formed by the two tablets or in the open pores of the detergent. Upon cooling or curing of the molten or liquid adhesive then forms a barrier layer in situ on the chlorine compartment at least at the direct contact points to the detergent compartment. Thus, a separate complete enclosure of the chlorine compartment can be omitted, thereby reducing production costs.

Preferred materials used for this barrier layer include, for example, high molecular weight polyethylene glycols, paraffins / waxes, stearate, silicates (eg waterglass), teflon, silicones, aluminas or a mixture thereof.

In a preferred embodiment, the detergent tablet is characterized in that the detergent composition comprises one or more components, for example consisting of surfactant-containing cleaning agents, polymers, sulfates, carbonates, citrates, dyes, fragrances, fillers and tabletting aids. Particularly preferably, the cleanser composition comprises a combination of these components, optionally also in combination with other customary ingredients for such detergent tablets, such as, for example, preservatives.

An exemplary preferred detergent composition includes, for example, one or more detergents, one or more polymers, sodium sulfate, sodium carbonate, trisodium citrate, or a combination thereof.

The detergent tablet according to a preferred embodiment comprises one or more surfactant-containing cleaning agents. Preferred examples of the surfactant-containing detergent are selected from salts of alkylbenzenesulfonic acid, fatty alcohol sulfate, fatty acid alkanolamide, fatty alcohol ethoxylate, ether sulfate, polyethylene glycol and ethoxylated alcohols, which may be used alone or in combination with each other.

In a preferred detergent tablet, the chlorine component comprises a granular matrix with at least one chlorine-containing reagent and preferably at least one chlorine-stable surfactant and optionally tabletting and / or other auxiliaries. Such a matrix leads to an additional separation and has a positive effect on the pressing behavior and the tablet strength. Chlorine-stable surfactants can also be used, for example, to form a barrier layer. The matrix of the chlorine compartment in this case would itself act as such a barrier so that an extra barrier between the detergent compartment and the chlorine compartment could be omitted. Examples of such chlorine-stable surfactants are especially amine oxides, etc.

Further, in a detergent tablet as described above, the chlorine component may be mixed with detergent fillers, tableting aids or a mixture thereof.

In a preferred embodiment of the detergent tablet, the chlorine component comprises, for example, dichloroisocyanurate (eg the sodium salt) or trichloroisocyanuric acid or a mixture thereof. With water forms from sodium dichloroisocyanurate, for example, hypochlorite, which has both a disinfecting and a bleaching effect. For example, trichloroisocyanuric acid breaks down chlorine in an acidic environment, whereas in an alkaline environment, the acid is first neutralized before hypochlorite is formed.

When trichloroisocyanuric acid was used, several studies have shown that it has the advantage over dichloroisocyanurate of being less reactive. Especially with incorrect use of acidic cleaning agents, eg. As in the household, trichloroisocyanuric acid has the advantage that in the unwanted contact with the acidic medium (eg., An acidic toilet cleaner) significantly less toxic chlorine-containing gases or chlorine gas are released. This is probably due to the above different chemical behavior. Thus, measurements of the chlorine-containing compounds directly above a toilet bowl with a Dräger tube have shown that with normal use of the detergent tablet in a cup in the toilet bowl, the readings remain below the MAK value of 0.5 ppm for both chlorine reagents, but at one Toilet stick with dichloroisocyanurate at 1-2 ppm are well above the MAK value when the detergent tablet comes in contact with a urinary scale (with 10% hydrochloric acid). Although the concentration upon contact of the urinary scale with Trichlorcyanursäure increases from about 0.1 ppm to about 0.2 to 0.3 ppm, but remains below the MAK value of 0.5 ppm.

A preferred embodiment of the detergent tablet comprises the chlorine component dichloroisocyanurate in less than about 50 wt .-%, and preferably between about 5 to about 35 wt .-%. Based on the total tablet, the dichloroisocyanurate is preferably less than 25 wt .-% and more preferably about 2-15 wt .-%.

Trichloroisocyanuric acid, on the other hand, is comprised in at least about 20% by weight, but not more than about 80% by weight, and preferably at least about 30 to about 60% by weight in a preferred embodiment to provide the cleaning promoting effect. Based on the total tablet, the trichloroisocyanuric acid is preferably below 40 wt .-% and more preferably at about 2-20 wt .-%.

The invention will be explained in more detail below with reference to the accompanying figures with reference to embodiments. The same components are provided with identical reference numerals in the various figures. Show it:

1 3 is a front perspective view of one embodiment of a container of a drug delivery device according to the invention;

2 a front perspective view of one of the container 1 formed embodiment of a drug delivery device according to the invention,

3 a perspective sectional view of the same drug delivery device as in 2 from the same perspective,

4 a rear perspective view of the same drug delivery device as in the 2 and 3 .

5 the same drug delivery device as in the 2 to 4 Mounted as intended in a toilet bowl, also in perspective view,

6 a bottom sectional view of the same drug delivery device as in the 2 to 5 along a section plane VI-VI 2 .

7 3 is a schematic diagram of a scent delivery effect of a self-dissolving gelled perfume according to the prior art;

8th FIG. 2 is a schematic graph of a scent delivery effect of a prior art drug delivery device that is not flushed with rinse water. FIG.

9 a schematic graph of a scent delivery effect of a drug delivery device according to an embodiment of the invention.

1 shows a housing 2 for producing an embodiment of a drug delivery device according to the invention 1 , It comprises a front side V and a rear side H, the front side V (cf. 5 ) when mounting the drug delivery device 1 towards a central area of a toilet bowl (cf. 5 ), while the back H points towards a nearest wall of the toilet bowl. For proper (reversible) suspension, the housing has a suspension device 5 on, in their rear area as an elastically bendable and thereby attachable to the edge of the toilet bowl loop 15 having. This loop 15 is at its front end in a firmly connected to the rest of the housing Einrasthöhlung 17 slidably inserted telescopically, so that they can be moved in the picture up or down, so that the holding device 5 can be adapted to the dimensions of the edge of the toilet bowl. The housing 2 has a central central area 10 on. Transverse to a defined by the course of the holding device Aufhängrichtung E extends a transverse direction Q, along which two end portions 4a . 4b on both sides of the mid-range 10 connect.

The housing 2 includes a first chamber 19 , the front side by a wall 9 is completely completed and in the top-side inlet openings 7 to lead. From her also bottom outlet openings (see. 4 - Reference numerals 23 ) out. Furthermore, the housing comprises 2 a second chamber 3a and a third chamber 3b , each in one of the two end areas 4a . 4b are embedded in the front. This second and third chamber 3a . 3b are identical in construction, ie the same in shape and aligned only mirror-inverted. They are both formed as a cavity, each having a peripheral edge 11 and in each case a full-surface back plane 21 in the form of another wall 21 exhibit. From the back plane 21 stand as anchoring elements 13 five pens each 13 out.

The dimensions d ₁ of the housing 2 at the outer limits of the two end regions 4a . 4b are smaller than the dimensions d ₂ in the transition region between the second and third chamber 3a . 3b to the middle area 10 , The housing thus tapers outward along the transverse direction Q.

The largest distance d ₃ of each edge 11 the respective second and third chamber 3a . 3b nearest anchoring element 13 is 3 mm, the largest distance d ₄ between two closest to each other anchoring elements 13 is 10 mm, with distances between two next to each other anchoring elements 13 of 5 mm. The depth d _{5 of} the second and third chambers 3a . 3b is 5 mm. The length of the anchoring elements 13 is preferably less than the depth d _{5 of} the second and the third chamber 3a . 3b so that the anchoring elements 13 below the upper end of each edge 11 end up.

2 shows one from the in 1 shown housing according to the invention drug delivery device 1 , In addition to the elements already mentioned here are fillings of the second and third chamber 3a . 3b to recognize. These fillings each comprise a full area in the cavity of the respective chamber 3a . 3b taken in jellied perfume 27a . 27b , which in this case consists of the same chemical composition. Examples of a suitable composition are mentioned above. Toward the front V closes each of the two jellied perfumes 27a . 27b with a delivery surface extending across the entire second or third chamber 3a . 3b extends, ie from the respective edges 11 the second or third chamber 3a . 3b is completed without a gap.

By the number, geometry and arrangement of the anchoring devices 13 (see. 1 ) and due to the specific nature, in particular viscosity properties of the gelled perfumes 27a . 27b is achieved that the delivery surfaces 30a . 30b remain substantially constant in their surface dimensions even with scent delivery and / or flushing by flushing the toilet. It will be a backwash of the gelled perfumes 27a . 27b avoided and thus both a replacement of the respective back page level 21 as well as a marginal reduction, which would have the effect of reducing the fragrance delivery.

In the perspective sectional view in 3 it can be seen that in the first chamber a tablet 29 comprising a cleaning and / or disinfecting and / or water treatment and / or anti-lime composition and / or any mixture of such compositions. The tablet is divided into a detergent compartment 31 with a cleanser and one of the detergent compartment 31 through a barrier layer 35 separate chlorine compartment 33 with a chlorine component. The chlorine compartment 33 is here in a surface of the detergent compartment 31 embedded as an internal tablet, so that the front surface of the chlorine compartment 33 is uncovered by the cleaner mass, which is formed as a solid. This uncovered surface of the chlorine compartment 33 points in the direction of the back of the full-surface wall 10 the first chamber 19 so that the wall 10 the chlorine compartment 33 concludes. This makes it possible to dispense the chlorine component in the chlorine compartment 33 to throttle or better control. Particularly preferred is the chlorine compartment 33 flat on the wall 10 the first chamber 19 so that it covers it loosely. While the detergent compartment 31 So rinsing water can be flushed during a rinse, the rinse water flow along the chlorine compartment 33 significantly reduced in its amount of water compared to the rinsing water flow around the detergent compartment 31 , Thus, at the same time chlorine component and detergent composition are dissolved in the rinse water, but in a controlled ratio, which is approximately the volume ratio of chlorine compartment 33 and detergent compartment 31 equivalent. A uniform removal of both compartments 33 . 31 is realized.

A frame formulation for the tablet 29 broken down as follows:

Reinigungsmittelkompartiment

The detergent compartment with cleaning function (conventionally also called toilet stick) is based on a surfactant mixture which is supplemented by polymers, soda, citrate and / or fillers. The detergent compartment typically consists of a selection of the following raw materials, these being divided into surface-active cleaning agents (A), salts (B), polymers (C) and further substances (D): A) Salts of alkylbenzenesulfonic acid 0-60% Fatty alcohol sulfate 0-40% fatty acid alkanolamide 0-15% Fettalkoholethoxylat 0-15% ether sulfate 0-10% polyethylene glycol 0-10% Ethoxylated alcohols 0-5% B) sodium sulfate 0-60% sodium 0-30% trisodium citrate 0-10% phosphonates 0-1% C) polycarboxylates 0-5% D) Dyes 0-1% perfume oils 0-5%

In the preparation, one or more of the above components, but at least one surface-active cleaning agent, are mixed with each other and with optional further aids and added to an extruder. The extruded detergent composition is cut, for example in portions and pressed in a compression chamber in the final desired shape. In this case, a depression can be introduced into which the chlorine compartment, for example in the form of a tablet, is subsequently inserted. The extrusion of the extruded detergent composition can be carried out for the purpose of continuous production in a rotary tablet press or an extender press.

Alternatively, however, one or more defined holes can also be introduced into the extruded molded body during extrusion through one or more mandrels, into which chlorine compartments are subsequently inserted.

Chlorkompartiment:

As chlorinated solids mostly dichloroisocyanurate or trichloroisocyanuric acid are used.

The solids for the compression of the chlorine compartment, in particular for the production of a tablet, can be selected from typical detergent fillers and tabletting aids. Exemplary compositions may be as follows: I) dichloroisocyanurate 5-25% sodium sulphate 30-60% sodium 30-60% polyethylene glycol 1-10% II) trichloroisocyanuric acid 30-70% sodium chloride 20-40% glycerides 5-20%

The solids are mixed and then pressed into a tablet. Alternatively, however, the chlorine compartment can be prepared by means of an extrusion process, cut into portions and pressed into the final shape.

Production of the chlorine-containing detergent tablet

The previously prepared chlorine compartment is z. B. glued with a polyethylene glycol in a well of the previously prepared detergent compartments, so as to produce the chlorine-containing detergent tablet according to the invention. This is then individually welded together in a flowpack.

EXAMPLE

The use of trichloroisocyanuric acid (detergent tablet I) has been shown to have the advantage over Na-dichloroisocyanurate (detergent tablet II) to be less reactive. This has the advantage, if improperly used in the household, that significantly less toxic chlorine gases are released when not in contact with an acidic medium (eg an acidic toilet cleaner).

The following detergent tablets were first prepared for the measurements: Cleaner tablet I with trichloroisocyanuric acid% Cleaner tablet II with Na dichloroisocyanurate 1. detergent component Marlonsäure 20 20 soda 20 20 sulfate 24 24 Fettalkoholethoxylat 1.5 1.5 ether sulfate 1 1 polyethylene glycol 1.8 1.8 fatty acid alkanolamide 0.7 0.7 phosphonate 0.2 0.2 citrate 1.3 1.3 Perfume 2.2 2.2 dyes 0.3 0.3 water 2 2 2. Chlorine component trichloroisocyanuric 13 industrial salt 8th glycerides 4 dichloroisocyanurate 5 soda 10 sulfate 9 polyethylene glycol 1

With both detergent tablets, measurements were taken directly over a toilet bowl with a Dräger tube (chlorine sensor). The following results regarding the chlorine concentration were obtained: Cleaner tablet I with trichloroisocyanuric acid Cleaner tablet II with Na dichloroisocyanurate Normal use in the toilet bowl about 0.1 ppm about 0.1 ppm Contact with a urine scale remover (10% hydrochloric acid) 0.2-0.3 ppm 1-2 ppm

When trichloroisocyanuric acid is used, the measured values remain below the MAK value of 0.5 ppm, while when using Na-dichloroisocyanurate the MAK value is significantly exceeded.

Of course, the tablet described in detail above can be modified in a customary manner by a person skilled in the art to a large extent. For example, the formulations of the detergent compartments or of the chlorine compartment can be modified by a person skilled in the art. The person skilled in the art also knows how to adapt the individual weight fractions to the corresponding requirements within the scope of the respective task (also with regard to the type of gelled perfume in the second chamber). Further possible embodiments in the preparation of the detergent tablet, for example of the tab-in-tab variants shown in the figures, are, for example, the spraying of the barrier component either to the detergent compartment or the chlorine compartment or to both compartments and the subsequent joining of the two compartments by means of a adhesive. An alternative embodiment of the production of the barrier layer would also be, for example, that one of the two or both compartments with the interfaces immersed in a solution with the barrier layer component and then joined together become. In another embodiment, an injection of the barrier layer component in the gap between the two compartments, while they are guided into each other, is expedient. In order to increase the spatial separation, it may for example also be advantageous for the tablet to draw in a protective layer film in the area of the contact surfaces between the two compartments. For example, in the in 3 shown example, the cylindrical body of the inner chlorine tablet are enclosed on the cylindrical surfaces by a protective layer film and then introduced into the opening of the detergent tablet. Such a manufacturing variant can be used in general and is not limited to cylindrical tablets. In this case, a protective layer film is not just a film, but this additional protective layer can also be present in the form of a coating.

4 shows a rear view of the same drug delivery device 1 , Here you can see that the loop 15 in the area that is in the Einrasthhöhlung 17 can be pushed in, several transverse bars 36 at a fixed distance from each other, which by a cross spring 37 the snap-in cavity 17 be held so that the holding device can not be extended unchecked. Rather, when pulling up the loop 15 to overcome a certain force, resulting from the positive connection of the transverse bars 36 and the cross spring 37 and by the spring force of this cross spring 37 is given.

In this rear view it can be further seen that the tablet 29 only in the middle area 10 of the housing 2 is arranged, wherein the first chamber 19 in itself to the wings 4a . 4b of the housing 2 extends. Also, the number, shape and arrangement of the top inlet openings 7 , the bottom outlet openings 23 and additionally attached to the back H of the housing additional openings 25 is recognizable: The six rectangular inlet openings 7 are each larger in their cross section (namely about three times as wide and the same length) as the also rectangular outlet openings 23 , This results in a flushing a certain temporary storage effect of the rinse water in the first chamber 19 , On the one hand to take in additional rinse water and on the other hand to regulate the duration of this stowage effect, are the approximately trapezoidal, narrowing from top to bottom additional openings 25 admitted. All openings, ie the inlet openings 7 , the outlet openings 23 and the additional openings 25 point only in the direction of the detergent compartment 31 the tablet 29 , Here, too, it can be seen that the chlorine compartment 33 Although not in the direct flushing of the rinse water is, but so far is flushed that enough chlorine-containing reagent dissolves in order to achieve the effect can.

5 shows the previously described drug delivery device according to the invention 1 as intended hung in a toilet 39 with a toilet seat 49 and a toilet bowl 41 , The toilet bowl 41 includes a border 47 in which the case 2 the drug delivery device 1 using the suspension device 5 is mounted and a subsequent lower wall 45 which is the central inner area 43 the toilet bowl limited and therefore defined. When rinsing is rinse water 51 below the edge 47 admitted. The flushing flow of this flushing water 51 goes along areas of the wall 45 , in particular he gets caught on the case 2 the drug delivery device 1 and overflows both the first chamber 19 as well as the second and third chambers 3a . 3b ,

6 shows the previously described drug delivery device 1 in a sectional view taken along a section line VI-VI 2 , The drug delivery device 1 is here in the toilet bowl 41 hooked, so that the course of the edge 47 the toilet bowl 41 and her wall 45 is indicated. It can be seen that the drug delivery device 1 shaped so that they are back to the wall 45 snugly. For this purpose, it is convex there. Also on its front V, it has a slight convex curvature, which additionally supports the second and third chambers 3a . 3b completely below the edge 47 the toilet bowl 41 are positioned and only a small part of the mid-range 10 (in which the hanger is mounted) over the edge 47 surmounted. The housing 2 is therefore also convex in longitudinal section to the ends, ie tapers in this section plane.

This illustration also clearly shows that the chlorine compartment 33 the tablet 29 full surface of the front wall 10 the first chamber 19 is completed. From the back H of the drug delivery device 1 it is also resilient in the direction of the front wall 10 pressed. This is due to the concave design of the first chamber 19 realized at the back H (the tablet 29 So it's not just loose, but between the back H and the wall 10 formally trapped), but can also be done using other resilient mechanisms. Along the wall 10 can despite the conclusion of the tablet 29 using the wall 10 Penetrate water so that the chlorine component is also at startup of the tablet 29 already released into the rinse water.

As shown here, the housing consists 2 from two (injection-molded plastic) trays 53 and 55 , which have circumferential notches 57 connected to each other. This defines the shape of the front shell 53 at the front V the cavity of the second and third chambers 3a . 3b while back of the rear shell 55 is facing and with this together the first chamber 19 formed.

7 to 9 show schematically for comparison the effect of fragrance delivery (N in indefinite scale) of a highly water-soluble gelled perfume (according to the prior art) with regular over-flushing, of a gelled perfume in the context of what it according to the cited EP 1 444 319 B1 is used and in the context of the described with reference to the preceding figures embodiment of the invention over the time t (in indefinite scale):
If a highly water-soluble gelled perfume is washed over regularly, it will not only be washed along its delivery surface, but also at its edges. As a result, with the passage of time, the delivery surface of the perfume and thus the delivery of perfume are reduced in an approximately linear process from a maximum perfume delivery N _max to zero. In other words, the fragrance delivery and thus the desired effect of the gelled perfume is steadily decreasing.

In contrast, the scent delivery of the non-flushed gelled perfume according to the above-mentioned document essentially always remains constant at a release value N _const . In the embodiment according to the invention with oversprayed delivery surface of the gelled perfume and constant delivery surface thereof, the output value N substantially oscillates between two values N ₁ , N ₂ : the lower (basic) output value N ₁ is always reached, if the toilet is not used for a long time, the increased release value N ₂ always when rinses are performed or just became even. At a first time t ₁ , the toilet flushing the toilet is operated, in which the appropriate drug delivery device 1 is mounted as intended. As a result, the fragrance release value N increases from the basic delivery value N ₁ to the increased delivery value N ₂ , which is reached at a time t ₂ after completion of the toilet flushing. The scent delivery value remains up to a time t ₃ on the increased release value N ₂ , namely approximately until then, when the rinse water has completely drained from the delivery surface of the gelled perfume and / or evaporated. Then it sinks again and reaches the basic delivery value N ₁ again at a time t ₄ . The same procedure is repeated from a time t ₅ again when the toilet flush is operated again.

In contrast to the dispensing schemes of the two preceding figures, it is here for the first time succeeded to allow a constant basic delivery of the fragrance on the one hand and a demand-oriented increased delivery on the other hand, without resorting to complex mechanical distribution mechanisms o.

It is finally pointed out once again that the components of the drug delivery device described in detail above are merely exemplary embodiments which can be modified by the person skilled in the art in various ways, without departing from the scope of the invention. Furthermore, the use of the indefinite article "on" or "one" does not exclude that the characteristics in question may also be present multiple times. In addition, "units" can consist of one or more, even spatially distributed, components.

LIST OF REFERENCE NUMBERS

1

Drug delivery device

2

casing

3a

second chamber

3b

third chamber

4a, 4b

end regions

5

suspension

7

inlets

9

wall

10

the central region

11

edge

13

Anchoring elements pins

15

loop

17

engagement concavity

19

first chamber

21

Backplane-wall

23

outlet

25

additional openings

27a, 27b

gelled perfume

29

tablet

30a, 30b

Drop-off surfaces

31

Reinigungsmittelkompartiment

33

Chlorkompartiment

35

junction

36

cleats

37

transverse spring

39

Toilet

41

toilet bowl

43

central inner area

45

wall

47

edge

49

toilet seat

51

dishwater

53, 55

Peel

57

rest

d ₁ , d ₂

Dimensions

d ₃ , d ₄

distances

d ₅

depth

e

Aufhängrichtung

H

back

N

fragrance release

N ₁

lower (basic) delivery value

N ₂

increased delivery value

N _const

constant delivery value

N _max

maximum fragrance delivery

Q

transversely

t

Time

t ₁ , t ₂ , t ₃ , t ₄ , t ₅

timings

V

front

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1444319 B1 [0002, 0105]

Claims (15)

Drug delivery device ( 1 ) for a toilet bowl ( 41 ), comprising a housing ( 2 ) with a front side (V) and a rear side (H) and a) a first chamber ( 19 ) for receiving a cleaning and / or disinfecting and / or water treatment and / or anticalcifying composition and / or any mixture of such compositions, the first chamber ( 19 ) at least one inlet ( 7 ) and at least one outlet opening ( 23 ), b) a second chamber ( 3a ), which is a jellied perfume ( 27a ) and this gelled perfume ( 27a ) encloses a delivery surface ( 30a ) of the gelled perfume ( 27a ), and c) a suspension device ( 5 ) for mounting the housing ( 2 ) on one edge ( 47 ) the toilet bowl ( 41 ) such that the rear side (H) in the direction of a wall ( 45 ) the toilet bowl ( 41 ) and the front side (V) in the direction of a central region ( 43 ) the toilet bowl ( 41 ), wherein the housing ( 2 ) is designed such that when properly hanged the toilet bowl assembly in the toilet bowl ( 41 ) - the inlet opening ( 7 ) of the first chamber ( 19 ) in the way of a rinse water ( 51 ) and - the second chamber ( 3a ) at least in some areas in the way of the rinsing water ( 51 ) that the delivery surface ( 30a ) of the gelled perfume ( 27a ) is rinsed at least partially in a rinsing operation, and wherein the second chamber ( 3a ) in combination with the gelled perfume ( 27a ) is formed so that the dimensions of the delivery surface ( 30a ) remain substantially the same during evaporation and / or overflow. A drug delivery device according to claim 1, wherein the second chamber ( 3a ) is designed such that, when the active substance delivery device is mounted in the toilet bowl as intended ( 41 ) at least partially from the edge ( 47 ) the toilet bowl ( 41 ) is surpassed. Drug delivery device according to claim 1 or 2, wherein the housing ( 2 ) from a central area ( 10 ) on which the suspension device ( 5 ) is attached to at least one end region ( 4a . 4b ) in the transverse direction (Q) to one through the suspension device ( 5 ) defined Aufhängrichtung (E) tapers, preferably tapered. Drug delivery device according to one of the preceding claims, wherein the housing ( 2 ) is convexly formed on its front side (V) at least in some areas and / or is convexly formed on its rear side (H) at least in some areas. Drug delivery device according to one of the preceding claims, wherein the second chamber ( 3a ) a number of anchoring elements ( 13 ) containing the gelled perfume ( 27a ) in a designated anchoring position within the second chamber ( 3a ) fixed with respect to at least one spatial direction. Drug delivery device according to claim 5, comprising a plurality of anchoring elements ( 13 ), which depends on a viscosity of the gelled perfume ( 27a ) so from each other and from one edge ( 11 ) of the second chamber ( 3a ) are spaced that the gelled perfume ( 27a ) when properly suspended in the toilet bowl ( 41 ) in its position in the second chamber ( 3a ) is kept substantially unchanged, preferably held so that a gap-free connection between the edge ( 11 ) of the second chamber ( 3a ) and the gelled perfume ( 27a ). Drug delivery device according to claim 5 or 6, wherein the anchoring elements ( 13 ) are arranged at a distance (d ₄ ) of at most 30 mm, preferably at most 20 mm, particularly preferably at most 10 mm from each other. Drug delivery device according to one of claims 5 to 7, wherein the anchoring elements ( 13 ) at a distance (d ₃ ) of at most 15 mm, preferably at most 10 mm, particularly preferably at most 5 mm from an edge ( 11 ) of the second chamber ( 3a ) are arranged. Drug delivery device according to one of claims 6 to 8, wherein the anchoring elements ( 13 ) from a back plane ( 21 ) of the second chamber ( 3a ) protruding pins. Drug delivery device according to one of the preceding claims, comprising a third chamber ( 3b ), which are preferably identical to the second chamber ( 3a ), the third chamber ( 3b ) contains a filling which differs from the contents of the first and second chambers ( 19 . 3a ) is different. Drug delivery device according to claim 10, wherein the third chamber ( 3b ) also a gelled perfume ( 27b ), preferably the same gelled perfume. A drug delivery device according to claim 10 or 11, wherein the second ( 3a ) and the third chamber ( 3b ) on wings ( 4a . 4b ) are arranged, which at two mutually wegweisenden end portions of the housing, preferably along a transverse direction (Q) to one by the suspension device ( 5 ) defined Aufhängrichtung (E) are spaced from each other. Drug delivery device according to one of the preceding claims, wherein the composition listed under a) or the mixture listed under a) in the form of a tablet ( 29 ), which tablet ( 29 ) preferably a detergent compartment ( 31 ) with a detergent composition and one of the detergent compartment ( 31 ) separate chlorine compartment ( 33 ) with a chlorine component, and at least one or a part of a surface of the chlorine compartment ( 33 ) is uncovered by the cleaner composition before the intended use. A drug delivery device according to claim 13, wherein the tablet ( 29 ) so in the first chamber ( 19 ) is arranged such that it is coated with the surface of the chlorine compartment which is uncovered by the detergent composition and / or a barrier layer adjoining the detergent composition ( 33 ) in the direction of a full-surface wall ( 9 ) of the first chamber ( 19 ). Process for the preparation of a drug delivery device ( 1 ) for a toilet bowl ( 41 ), wherein the drug delivery device ( 1 ) a housing ( 2 ) having a front side (V) and a back side (H), comprising the following steps: a) providing a first chamber ( 19 ) of the housing ( 2 ) for receiving a cleaning and / or disinfecting and / or water treatment and / or anticalcifying composition and / or any mixture of such compositions, the first chamber ( 19 ) at least one inlet ( 7 ) and at least one outlet opening ( 23 b) providing a second chamber ( 3a ) of the case containing a jellied perfume ( 27a ) and this gelled perfume ( 27a ) encloses a delivery surface ( 30a ) of the gelled perfume ( 27a ), and c) providing a suspension device ( 5 ) for mounting the housing ( 2 ) on one edge ( 47 ) the toilet bowl ( 41 ) such that the rear side (H) in the direction of a wall ( 45 ) the toilet bowl and the front (V) towards a central area ( 43 ) of the toilet bowl, the housing ( 2 ) is designed such that when properly hanged the toilet bowl assembly in the toilet bowl ( 41 ) - the inlet opening ( 7 ) of the first chamber ( 19 ) in the way of a rinse water ( 51 ) and - the second chamber ( 3a ) at least in some areas in the way of the rinsing water ( 51 ) that the delivery surface ( 30a ) of the gelled perfume ( 27a ) is rinsed at least partially in a rinsing operation, and wherein the second chamber ( 3a ) in combination with the gelled perfume ( 27a ) is formed so that the dimensions of the delivery surface ( 30a ) remain substantially the same during evaporation and / or overflow.

Images