Tank cassette for the retrofitting of a cassette toilet in a camper van
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- GASSER RENÉ
- Filing Date
- 2024-07-25
- Publication Date
- 2026-06-17
Smart Images
Figure AT2024060286_13022025_PF_FP_ABST
Abstract
Description
[0001] Tank cassette for retrofitting a cassette toilet of a
[0002] Technical area
[0003] The invention relates to a tank cassette for retrofitting a cassette toilet of a camper van, comprising a lid having a connection for connecting a toilet bowl drain, which lid is arranged on a base shell. The invention also relates to a device for retrofitting a cassette toilet for a camper van, the cassette toilet comprising a shaft having an access opening for receiving a tank cassette of an original cassette type, between the bottom guide runners of which a clearance profile of the shaft runs, wherein the bottom of the shaft has a tray and an original locking mechanism for securing the tank cassette of an original cassette type.The invention also relates to a cassette toilet for a camper van, comprising a toilet bowl, a shaft arranged below the toilet bowl and having an access opening, wherein the bottom of the shaft has a tray and a locking mechanism for holding a tank cassette of an original cassette type. Furthermore, the invention relates to a method for retrofitting a cassette toilet for a camper van.
[0004] State of the art
[0005] EP0248511 A1 discloses a cassette toilet for a camper van, comprising a toilet bowl and a tank cassette of an original cassette type that can be connected to the toilet bowl drain. Typically, the toilet bowl is located in the living area of a camper van, while the tank cassette is located in a shaft below the toilet bowl, accessible through an access opening located on the exterior of the camper van. The tank cassette of an original cassette type known from EP0248511A1 is filled with liquid chemicals known from the prior art to reduce odor and decompose excrement. The storage containers for the chemicals can be stored in a tray in the floor of the shaft, which also functions as a collecting basin for any liquid flowing from the tank cassette.While the liquid chemicals used are highly effective at reducing odors, they pose problems when it comes to disposal, as these cassette toilets are not dumped into the groundwater system but can only be emptied at designated disposal sites. While these cassette toilets are therefore suitable for long-term camping at campsites with environmentally friendly disposal sites, they are only partially suitable for wild camping.
[0006] WO2021069769A1 and ES1287244U disclose tank cassettes for a cassette toilet in a camper van. These comprise a lid connected to a lower shell via a hinged joint. The lid and lower shell define an interior space in which a collection bag is arranged. To prevent odors, ES1287244U discloses providing a closure flap in the toilet bowl above the tank cassette. Unfortunately, odor control depends on design measures on the toilet bowl.
[0007] Description of the invention
[0008] The invention is therefore based on the object of creating a tank cassette for cassette toilets that can be emptied easily and in an environmentally friendly manner, regardless of the surrounding infrastructure. The tank cassette should preferably be usable for different cassette toilets, so that a cassette toilet that can be adapted to different camping situations can be created. The invention achieves this object in that the lid, which is detachably attached to the lower shell, together with the lower shell, spans an interior space in which a receiving bag filled with a liquid-binding and / or odor-binding material and open for connection is arranged. As a result of the measures according to the invention, the full tank cassette can be emptied easily by detaching the lid from the lower shell and lifting the receiving bag out of the lower shell.The collection bag, including any excrement bound by the liquid-absorbing and / or odor-binding material, can then be disposed of with normal household waste, similar to diapers or dog waste bags, eliminating the need to visit specially designated disposal sites for chemical cassette toilets. The lower tray can have a viewing window for checking the fill level. If the collection bag is transparent, it can be checked whether the collection bag needs to be replaced. The lid and lower tray can incorporate attracting magnets, creating a frictional connection between the attached lid and the lower tray. The edge of the bag surrounding the opening can be folded over the edge of the lower tray on the lid side. The collection bag can therefore be clamped between the lower tray and the lid by the lid.In this way, the edge of the receiving bag is located outside the interior space spanned by the lid and the lower shell, so that the edge of the bag is free of excrement and the receiving bag can be hygienically picked up and disposed of at this point. A pulling means for reducing the diameter of the opening of the bag can run in the edge of the bag. The receiving bag is preferably made of a fluid-tight plastic film, which in particular has a thickness of 20 μm to 140 μm in order to ensure sufficient tear resistance. The thickness can be at least 80 μm for particular tear resistance. The side of the lid facing the lower shell is preferably concave in order to promote dripping of condensate collected on the underside of the lid into the receiving bag. The underside can have a micro- or nanostructured surface.The resulting lotus effect can further promote the dripping of the condensate collected on the underside of the lid into the collection bag. In particular, the tank cassette according to the invention can have a fill level sensor, for example an ultrasonic sensor, whereby the fill level of the collection bag can be checked independently of any viewing windows. To supply the tank cassette with electricity, for example its sensors, the tank cassette can have an electrical connection for a counterpart electrical connection of the camper van or the like. The tank cassette can also comprise a connection for a control unit to integrate the tank cassette into the control system of the camper van and / or the cassette toilet.In a particularly simple embodiment, the fill level sensor can be a force sensor located on the inner side wall of the lower shell, facing the receiving bag. This force sensor is triggered as soon as a force threshold is exceeded due to the filling of the receiving bag. In the simplest case, the force sensor can be a toggle switch. The force sensor can be connected to the camper van via a sensor adapter.
[0009] In principle, mineral litters such as zeolite, diatomite, sepiolite, and / or bentonite, as well as silica gels, can be used as liquid-binding and / or odor-binding materials. However, a cassette toilet that is particularly easy to set up and use is created when the liquid-binding and / or odor-binding material comprises superabsorbent granules. This allows a large portion of the liquid in the excrement to be bound as a hydrogel, further facilitating handling when disposing of the collection bag.
[0010] In order to ensure particularly hygienic conditions when replacing a full collection bag and to avoid contact with any contents, it is proposed that the lid connection be designed to be closable. This can be achieved in a structurally practical way by using sliding flaps that can be adjusted against each other to reversibly close the connection. The sliding flaps are preferably arranged on the side of the lid facing the interior in order to place the closure as far away as possible from the operator. The sliding flaps can be adjusted against each other and spaced apart from each other using a rotating mechanism. The operating element of the rotating mechanism is preferably arranged on the side of the lid facing away from the interior.To ensure that the sliding flaps can dictate the movement of the receiving bag not only when closing but also when opening, the sliding flaps can be equipped with locating elements on the top side, such as a Phillips slot, for the receiving bag overhang. The receiving bag overhang can be folded into the locating elements, allowing the movement of the sliding flaps to be transferred to the receiving bag as well.
[0011] A further preferred and particularly hygienic handling of the collection bag can be achieved if the lid has a detachable sealing ring enclosing the connection on its side facing away from the interior, for at least partially clamping an edge of the collection bag between the lid and the sealing ring. In this way, the collection bag can be removed by removing the lid, including the clamped-in collection bag, from the bottom shell, thus eliminating the need to touch the collection bag at all. Removing the sealing ring from the lid also releases the collection bag, which can be done at an appropriate disposal site without coming into contact with the collection bag.Particularly in combination with a lockable connection, this results in particularly hygienic conditions, since the closed connection allows the collection bag to be sealed as a result of the rotational movement of the collection bag before it is released into the waste by loosening the sealing ring and the closure.
[0012] In order to be able to specify a volume for the receiving bag that is adapted to the interior space, it is proposed that the receiving bag be connected in a force-fitting and / or form-fitting manner to the lid-side edge of the lower shell via at least one fastening element. The fastening element is preferably compostable, for example made of cornstarch. In a simple case, the fastening element can be a clamp slipped over the lid-side edge of the lower shell. Depending on whether they are to be disposed of or reused, the fastening elements can be arranged on the inside and / or outside of the receiving bag, thus securing the receiving bag to the lid-side edge of the lower shell. A particularly practical option for the reversible fastening of the receiving bag is that the fastening element is a receiving slot arranged in the lower shell with clamping jaws that can be adjusted against one another.The clamping jaws can be moved between a holding position in which the clamping jaws clamp the receiving bag between them and a release position in which the clamping jaws are spaced apart from each other.
[0013] To enable secure locking of the tank cassette in a shaft of a cassette toilet, the lower shell can have a locking component, particularly on the bottom. The locking component can be displaced between a locking position, in which the locking component is positioned against a locking lug of a fixed point and secures the tank cassette against withdrawal—for example, from a shaft of a camper van—and a release position, in which the locking component is released from the locking lug and releases the tank cassette in the withdrawal direction. A locking lever, for example, is suitable as a locking component.
[0014] In principle, the locking component of the tank cassette according to the invention can be designed such that the tank cassette can be locked together with an original locking mechanism of a cassette toilet. However, in order to be able to use the tank cassette in a particularly flexible manner and independently of the structural conditions of an existing cassette toilet in a camper van, a device for retrofitting a cassette toilet for a camper van is proposed. The cassette toilet comprises a shaft having an access opening for receiving a tank cassette of an original cassette type, between the bottom-side guide runners of which a clearance profile of the shaft runs, wherein the bottom of the shaft has a tray and an original locking mechanism for holding the tank cassette of an original cassette type.In order that the tank cassette according to the invention, hereinafter tank cassette for retrofitting a cassette toilet, can be fixed in the shaft in a structurally simple manner without preventing the possibility of using the tank cassette of an original cassette type, the retrofit kit is characterized by an adapter element with a locking device for the tank cassette according to the invention for retrofitting a cassette toilet, which is designed to be inserted into the tub, wherein stationary components of the adapter element protrude at most up to the limit of the clearance profile running above the tub and by the tank cassette according to the invention for retrofitting a cassette toilet, which can be connected to a drain of a toilet bowl and locked with the adapter element.Thanks to these measures, an existing cassette toilet comprising a shaft with an access opening and a tray at the bottom can be easily retrofitted by inserting the adapter element into the tray. The adapter element features a locking mechanism for the tank cassette for retrofitting a cassette toilet, allowing it to be secured in the shaft and connected to the drain of an existing toilet bowl, allowing it to collect the draining excrement.Since the stationary components of the adapter element arranged in the tray protrude at most to the upper and lateral limits of a clearance profile running above the tray, which is defined by the bottom-side guide runners of a tank cassette of an original cassette type when the latter is in the operating position (arranged in the shaft, locked in an original locking mechanism, and connected to the drain of the toilet bowl), the adapter element also allows the tank cassette of the original cassette type to be inserted into the shaft, so that it is possible to switch at will between the tank cassette of the original cassette type and the tank cassette according to the invention for retrofitting a cassette toilet without having to dismantle the adapter element. The original locking mechanism, which is preferably arranged between the tray and the access opening, is thus used to lock the tank cassette of the original cassette type.In this case, the locking mechanism of the adapter element is used to lock the tank cassette according to the invention for retrofitting a cassette toilet. The tank cassettes of the original type and the tank cassette for retrofitting a cassette toilet can thus differ at least by having different locking points in the shaft. Stationary components of the adapter element refer to the components of the adapter element that are immobile in the vertical direction or perpendicular to the adapter element's longitudinal axis. For example, it is conceivable that a spring-loaded locking lever of the adapter element, which functions as part of the locking mechanism and has a stop wedge, protrudes beyond the upper limit of the clearance profile, since inserting the tank cassette of the original cassette type would push the stop wedge downwards, thus allowing unhindered insertion of the tank cassette of the original cassette type.Movable components can therefore extend beyond the limits of the clearance profile if they have at least one position in which they are arranged within the clearance profile. However, the adapter element can also have only stationary components. In this case, all components of the adapter element extend no further than the limit of the clearance profile. The clearance profile, whose upper and lateral limits must not be intersected by the stationary components of the adapter element, is determined by the underside of the tank cassette of the original cassette type in the operating position, namely by the space between the base-side guide skids and the section connecting the guide skids. The trough can be connected to the clearance profile at the bottom.It is therefore clear to the person skilled in the art that the limits of the clearance gauge refer to the upper and lateral limits, meaning that the stationary components of the adapter element must be positioned within the clearance gauge and must not extend beyond it. The protrusion of the components into the clearance gauge from the trough located below the clearance gauge is naturally permitted.
[0015] The device can be used for retrofitting a cassette toilet for a camper van, the cassette toilet comprising a toilet bowl, a shaft arranged below the toilet bowl and having an access opening, and a tank cassette of an original cassette type arranged in the shaft in the operating state and connectable to a drain of the toilet bowl, between the bottom guide runners of which a clearance profile runs, wherein the bottom of the shaft has a tray and an original locking device for holding the tank cassette of an original cassette type, wherein the tank cassette of an original cassette type is released from the original locking device for holding the tank cassette of an original cassette type and is pulled out of the shaft through the access opening in the pull-out direction, then an adapter element with a locking device for a tank cassette is inserted into the tray for retrofitting a cassette toilet,Whereby stationary components of the adapter element protrude up to the maximum limit of the clearance profile of the tank cassette of an original cassette type in the operating position, which runs above the tray, and then a tank cassette for retrofitting a cassette toilet is inserted into the shaft, locked in the adapter element and connected to the drain of the toilet bowl.
[0016] The tank cassette for retrofitting a cassette toilet can differ from the tank cassette of the original cassette type at least in the position of the locking points in the shaft, so that both can be securely fixed in the shaft using the locking mechanisms assigned to the cassette types. However, the cassette types preferably also differ in terms of their mode of operation, so that a cassette type with chemicals that require separate disposal and a tank cassette according to the invention for retrofitting a cassette toilet with a collection bag can be used. In this way, the cassette toilet can be easily adapted to different camping conditions. The cassette types can also differ in their dimensions.Preferably, the tank cassette according to the invention for retrofitting a cassette toilet can be designed to be shorter than the original cassette type in the extension direction or the adapter's longitudinal direction, as this results in particularly favorable design conditions with regard to the respective locking of the different tank cassettes. Thus, the original locking mechanism can be arranged in the adapter's longitudinal direction between the locking mechanism of the adapter element and the access opening, so that the original locking mechanism does not hinder the locking of the tank cassette according to the invention for retrofitting a cassette toilet, since it does not extend as far as the original locking mechanism.
[0017] A particularly secure hold of the adapter element and thus of the tank cassette for retrofitting a cassette toilet is achieved if the adapter element has base webs running in the longitudinal direction of the adapter element, the common cross-section of which is at least partially adapted to the shape of the tray. The shape of the underside of the adapter element is thus adapted to the shape of the tray, creating a partial positive connection between the tray and adapter element, which in particular prevents displacement of the adapter element transversely to the longitudinal direction of the adapter element and transversely to the vertical direction in the tray. The adapter device can also be glued in the tray; removing the adapter device is not necessary anyway, since the tank cassette of an original cassette type can slide over the adapter element and be locked with the original locking device, which is spaced apart from the locking device of the adapter element in the longitudinal direction of the adapter.
[0018] To enable the tank cassette to be connected to the existing electronics for retrofitting a cassette toilet, it is proposed that the adapter element form a stop at one end for the tank cassette for retrofitting a cassette toilet, wherein the stop comprises an electrical connection for a counter-electrical connection of the tank cassette for retrofitting a cassette toilet. The electrical connection of the adapter element can be connected to the electronics of the camper van and / or the cassette toilet, so that the tank cassette for retrofitting a cassette toilet can also be integrated into the electronics of the camper van and / or the cassette toilet. In particular, the tank cassette for retrofitting a cassette toilet can have a fill level sensor, for example an ultrasonic sensor, which is electrically supplied in this way.Preferred design conditions arise when the electrical connection of the adapter is designed as a male coupling and the connection of the tank cassette for retrofitting a cassette toilet as a female coupling. The positive locking mechanism secures the tank cassette for retrofitting a cassette toilet transversely to the adapter's longitudinal direction, allowing the connections to also form part of the locking mechanism.
[0019] To process the signals from various sensor components of the tank cassette for retrofitting a cassette toilet, a control unit for connecting to a sensor system of the tank cassette for retrofitting a cassette toilet can be arranged on the deck in the symmetry axis of the adapter element. A collecting tray is preferably arranged on the control unit and is positively attached to it. The control unit can be connected to a control system of the camper van and / or the cassette toilet so that the data recorded by the sensors, for example from the fill level sensor, can be processed. In particular, by providing a fill level sensor that is connected to the control system of the cassette toilet via the control unit, it can be signaled when the tank cassette for retrofitting a cassette toilet is full and therefore needs to be emptied.The drip tray protects the electronic components from any liquids escaping from the tank cassette for retrofitting a cassette toilet and can preferably cover the adapter element.
[0020] Against the pull-out direction, the tank cassette for retrofitting a cassette toilet can be secured by a wall of the shaft or by a stop on the adapter element. In the pull-out direction, the tank cassette for retrofitting a cassette toilet can be secured by a locking lever on the adapter element that is vertically displaceable and arranged opposite the wall and / or the stop. However, simple manufacturing conditions for the adapter element are achieved if a locking lug for a locking lever of the tank cassette for retrofitting a cassette toilet is arranged on the end of the adapter element facing the access opening of the shaft. The locking lug is stationary, so that in this case the adapter element can only have stationary components. In this case, the locking lever can be formed by the tank cassette for retrofitting a cassette toilet.The locking lug can protrude from the trough and into the clearance profile, but as a stationary component it does not intersect the upper and lateral limits of the clearance profile.
[0021] The device can be used to construct a cassette toilet according to the invention for a camper van. The cassette toilet according to the invention comprises a toilet bowl, a shaft arranged beneath the toilet bowl and having an access opening, the bottom of the shaft having a tray and an original locking mechanism for securing a tank cassette of an original cassette type, and a device according to the invention for retrofitting a cassette toilet, wherein a tank cassette of an original cassette type and the tank cassette according to the invention for retrofitting a cassette toilet are interchangeable and can be locked in the shaft using the respective associated locking mechanism. The tank cassette of an original cassette type can be locked using the original locking mechanism. The tank cassette for retrofitting a cassette toilet can be locked using the locking mechanism of the adapter.
[0022] Brief description of the invention
[0023] The drawing shows an example of the subject matter of the invention.
[0024] Fig. 1 is a schematic longitudinal section through a shaft of a cassette toilet, wherein a tank cassette of an original cassette type and an adapter element according to the invention are arranged in the shaft,
[0025] Fig. 2 shows a section along the line II-II of Fig. 1, Fig. 3 shows a section along the line III-III of Fig. 1, Fig. 4 shows a schematic longitudinal section through a shaft of a cassette toilet, wherein a tank cassette according to the invention for retrofitting a cassette toilet and an adapter element according to the invention are arranged in the shaft, Fig. 5 shows an exploded view of a device according to the invention for retrofitting a cassette toilet for a camper van, Fig. 6 shows a preferred embodiment of the lid of the tank cassette according to the invention in a perspective view from above,
[0026] Fig. 7 the lid shown in Fig. 6 in perspective view from below,
[0027] Fig. 8 is a representation corresponding to Fig. 7 in a partially exploded view and
[0028] Fig. 9 is a section along the line IX-IX of Fig. 6, showing the lower shell, the clamping ring and the receiving bag.
[0029] Ways to implement the invention
[0030] A tank cassette according to the invention for retrofitting a cassette toilet 3b (reference numeral 3b refers to the tank cassette and not to the cassette toilet) can, as can be seen from Fig. 4, have a lower shell 26 on which a lid 27 with a connection 28 for a drain 2 of a toilet bowl 1 is arranged. A receiving bag 29 is arranged in the lower shell 26, which can be slipped over the edge of the lower shell 26 and clamped between the lid 27 and the lower shell 26. A liquid-binding and / or odor-binding material 30, for example comprising a superabsorbent granulate, can be arranged in the receiving bag 29.
[0031] The tank cassette 3b according to the invention, together with an adapter element 13, can function as a device for retrofitting a cassette toilet, for example as shown in Fig. 1, which comprises a toilet bowl 1, a tank cassette of an original cassette type 3a that can be connected to a drain 2 of the toilet bowl 1, and a shaft 4 arranged below the toilet bowl 1, in which the tank cassette of an original cassette type 3a is arranged. The shaft 4 has an access opening 5, which can be closed if necessary via a flap 6. The tank cassette of an original cassette type 3a can be pulled out in the pull-out direction 7 through the access opening 5, for example for emptying or replacing. As can be seen from Figs. 2 and 3, a clearance profile 8 runs in the shaft 4 between the bottom guide skids 9 of the tank cassette of an original cassette type 3a arranged in the shaft 4.Within the scope of the invention, the clearance profile 8 is understood to be that section in the shaft 4 defined by the gap between the bottom-side guide runners 9 and the section 10 of the underside of the tank cassette of an original cassette type 3a connecting the guide runners 9 when the tank cassette of an original cassette type 3a is in the operating position. According to Figs. 1 and 3, the bottom 11 of the shaft 4 has a trough 12 in which an adapter element 13 is arranged that does not interact with the tank cassette of an original cassette type 3a. Stationary components of the adapter element 13 preferably protrude at most to the upper and lateral limit 14 of the clearance profile 8 running above the tray 12. In this way, the tank cassette of an original cassette type 3a can be pushed smoothly over the adapter element 13 and locked with an original locking device 15 arranged on the base 11.For locking with the original locking mechanism 15, the tank cassette of an original cassette type 3a can have a locking lever 16. The adapter element 13 can, as disclosed in particular in Figs. 4 and 5, have a locking mechanism 17 for a tank cassette for retrofitting a cassette toilet 3b. Thus, while the tank cassette of an original cassette type 3a is locked with the original locking mechanism 15, the tank cassette for retrofitting a cassette toilet 3b can preferably be locked with the locking mechanism 17 of the adapter element 13. Since the adapter element 13 allows the tank cassette of an original cassette type 3a to be inserted, it does not need to be removed when changing tank cassettes of different types, which enables easy adaptability of the cassette toilet. The locking device 17 can be a locking lug into which a locking lever 18 of the tank cassette engages for retrofitting a cassette toilet 3b.The locking lug is preferably arranged at the end of the adapter element 13 facing the access opening 5 of the shaft 4. In an alternative embodiment to Fig. 4, in which the adapter element 13 is not intended to be used, the locking lever 18 of the lower shell 26 can be designed such that it engages the original locking mechanism 15.
[0032] In particular, it can be seen from Figs. 3 and 5 that the adapter element 13 has base webs 20 running in the adapter element longitudinal direction 19. The base webs 20 can be adapted to the shape of the tray 12. This means that the common cross-section of the base webs 20 is at least partially adapted to the shape of the tray 12, so that the underside of the adapter element 13 can be inserted into the tray 12 with a form-fitting fit. This prevents the adapter element 13 and the tank cassette locked with the adapter element 13 for retrofitting a cassette toilet 3b from slipping transversely to the vertical axis and transversely to the adapter element longitudinal direction 19. The adapter element 13 can also be adapted to the tray 12 with regard to its longitudinal extent, so that the adapter element 13 is also secured in the adapter longitudinal direction 19 or in the extension direction 7. If necessary, the adapter element 13 can be clamped, glued or screwed into the tub 12.
[0033] Fig. 5 shows that the adapter element 13 can have a stop 21 for the tank cassette for retrofitting a cassette toilet 3b at its end opposite the access opening 5. The stop 21 can form an electrical connection 22a for a counter-electrical connection 22b of the tank cassette for retrofitting a cassette toilet 3b in the extension direction 7.
[0034] The adapter element 13 can have a control unit 23 on its deck side, along its axis of symmetry. The control unit 23 can be signal-connected to a sensor, for example, a fill level sensor 24, of the tank cassette for retrofitting a cassette toilet 3b, and to a control unit (not shown) of the camper van and / or the cassette toilet. A detachable drip tray 25 can be arranged in a form-fitting manner on the control unit to collect any liquid escaping from the tank cassette for retrofitting a cassette toilet 3b.
[0035] As can be seen from Fig. 4, the tank cassette for retrofitting a cassette toilet 3b can have a handle 31 for easier handling. Guide runners 32 of the tank cassette for retrofitting a cassette toilet 3b can preferably be designed such that trouble-free sliding over the original locking device is possible when inserting the tank cassette of a retrofit cassette type 3b into the shaft 4. In particular, the clear height of the clearance profile defined by the guide runners 32 can be higher than the height of the original locking device 15. Similarly, the clear height of the clearance profile 8 defined by the guide runners 9 of the tank cassette of an original cassette type 3a can be higher than the height of those components of the adapter element 13 that protrude upwards above the tray 12. The lid 27 can have a seal 33 for sealing against the lower shell 26. The lid 27 can be connected to the lower shell via a catch or via magnets.
[0036] In particular, it can be seen from Figs. 6 - 8 that the cover 27 can have sliding flaps 34 that can be adjusted relative to one another for closing the connection 28. The movement of the sliding flaps 34 can be effected by a rotating mechanism 35, which has an actuating element 36, a lever arm 37 for driving a rotary disk 38 with positive guides 39, into which springs 40 of the sliding flaps 34 engage at one end, and with sliding guides 41 along which the rotary disk 38 is guided. Because the sliding flaps 34 engage at one end in the positive guides 39 and at the other end are pivotally arranged on the cover 27, a movement of the sliding flaps 34 for closing and opening the connection 28 can be forced by driving the rotary disk 38.
[0037] From Fig. 9, it can be seen that the lid 27 has, on its side facing away from the interior, a detachable sealing ring 42, which clamps the edge 43 of the receiving bag 29 against the lid 27. Furthermore, the receiving bag 29 can be connected in a force-fitting and / or form-fitting manner to the edge 45 of the lower shell 26 on the lid side via clamps 44 as fastening elements.
[0038] According to Fig. 6, the sliding flaps 34 can have carrying elements 45 on the deck side, into which a receiving bag projection can be inserted in order to force the receiving bag to move apart even when the sliding flaps 34 are opened.
Claims
Patent claims 1. Tank cassette for retrofitting a cassette toilet (3b) of a camper van with a lid (27) having a connection (28) for connecting a drain (2) of a toilet bowl, which lid is arranged on a lower shell (26), characterized in that the lid (27) detachably placed on the lower shell (26) together with the lower shell (26) spans an interior space in which a receiving bag (29) filled with a liquid-binding and / or odor-binding material (30) and open to the connection (28) is arranged.
2. Tank cassette for retrofitting a cassette toilet (3b) according to claim 1, characterized in that the liquid-binding and / or odor-binding material (30) comprises a superabsorbent granulate.
3. Tank cassette for retrofitting a cassette toilet (3b) according to claim 1 or 2, characterized in that the connection (28) of the lid (27) is designed to be closable.
4. Tank cassette for retrofitting a cassette toilet (3b) according to claim 3, characterized in that sliding flaps (34) which can be adjusted relative to one another are provided for reversibly closing the connection (28).
5. Tank cassette for retrofitting a cassette toilet (3b) according to one of claims 1 to 4, characterized in that the cover (27) has, on its side facing away from the interior, a detachable seal (42) enclosing the connection (28) for at least partially clamping a bag edge (43) of the receiving bag (29) between the cover (27) and the seal (42).
6. Tank cassette for retrofitting a cassette toilet (3b) according to one of claims 1 to 5, characterized in that the receiving bag (29) is connected in a force-fitting and / or form-fitting manner to the lid-side edge (44) of the lower shell (26) via at least one fastening element.
7. Device for retrofitting a cassette toilet for a camper van, the cassette toilet comprising a shaft (4) having an access opening (5) for receiving a tank cassette of an original cassette type (3a), between the bottom guide runners (9) of which a clearance profile of the shaft (4) runs, wherein the bottom of the shaft (4) has a tray and an original locking device (15) for holding the tank cassette of an original cassette type (3a), characterized by an adapter element (13) with a locking device (17) for a tank cassette for retrofitting a cassette toilet according to one of the preceding claims (3b), which adapter element is designed for insertion into the tray (12),wherein stationary components of the adapter element (13) project at most up to the limit (14) of the clearance profile (8) extending above the tub (12) and through the tank cassette which can be connected to a drain (2) of a toilet bowl (1) and locked with the adapter element (13) for retrofitting a cassette toilet according to claim 1 or 2 (3b).
8. Device according to claim 7, characterized in that the adapter element (13) has base webs (20) running in the adapter element longitudinal direction (19), the common cross section of which is adapted at least in sections to the shape of the trough (12).
9. Device according to claim 7 or 8, characterized in that the adapter element (13) forms a stop (21) at one end for the tank cassette for retrofitting a cassette toilet according to claim 1 or 2 (3b), wherein the stop (21) comprises an electrical connection (22a) for an electrical counter-connection (22b) of the tank cassette for retrofitting a cassette toilet according to claim 1 or 2 (3b).
10. Device according to one of claims 7 to 9, characterized in that a control unit (23) for connecting to a sensor system (24) of the tank cassette for retrofitting a cassette toilet according to claim 1 or 2 (3b) is arranged on the cover side in the axis of symmetry of the adapter element (13), wherein a collecting tray (25) is preferably arranged on the control unit (23) and is placed thereon in a form-fitting manner.
11. Device according to one of claims 7 to 10, characterized in that a locking lug for a locking lever (18) of the tank cassette for retrofitting a cassette toilet according to claim 1 or 2 (3b) is arranged on the end of the adapter element (13) facing the access opening (5) of the shaft (4).
12. Cassette toilet for a camper van comprising a toilet bowl (1), a shaft (4) arranged below the toilet bowl (1) and having an access opening (5), wherein the bottom (11) of the shaft (4) has a tray (12) and an original locking device (15) for holding a tank cassette of an original cassette type (3a) and a device for retrofitting a cassette toilet according to one of claims 7 to 11, wherein a tank cassette of an original cassette type (3a) and the tank cassette for retrofitting a cassette toilet according to one of claims 1 to 6 (3b) are exchangeable and can be locked on the respectively associated locking device (15, 17) in the shaft (4).
13. A method for retrofitting a cassette toilet for a camper van, the cassette toilet comprising a toilet bowl (1), a shaft (4) arranged below the toilet bowl (1) and having an access opening (5), and a tank cassette of an original cassette type (3a) arranged in the shaft (4) in the operating state and connectable to a drain (2) of the toilet bowl (1), between whose bottom-side guide runners (9) a clearance profile (8) runs, wherein the bottom (11) of the shaft (4) has a tray (12) and an original locking device (15) for holding the tank cassette of an original cassette type (3a), characterized characterized in that the tank cassette of an original cassette type (3a) is released from the original locking device (15) for holding the tank cassette of an original cassette type (3a) and is pulled out of the shaft (4) through the access opening (5) in the pull-out direction (7), then an adapter element (13) with a locking device (17) for a tank cassette for retrofitting a cassette toilet according to claim 1 or 2 (3b) is inserted into the tub (12), wherein stationary components of the adapter element (13) protrude at most up to the limit (14) of the clearance profile (8) of the tank cassette of an original cassette type (3a) extending above the tub (12) in the operating position and then a tank cassette for retrofitting a cassette toilet according to one of claims 1 to 6 (3b) is pushed into the shaft (4), locked in the adapter element (13) and attached to the Drain (2) of the toilet bowl (1) is connected.