WO2008145208A1

WO2008145208A1 - Extraction system for a tank

Info

Publication number: WO2008145208A1
Application number: PCT/EP2008/001754
Authority: WO
Inventors: Volker Müller; Frank Wunderlich
Original assignee: Dometic Gmbh
Priority date: 2007-05-30
Filing date: 2008-03-05
Publication date: 2008-12-04
Also published as: DE102007024948A1; EP2150440A1

Abstract

A mobile toilet system (1) for a recreational vehicle, with a basic body (2) which is to be installed according to specifications on the inside of the vehicle in front of a service flap, a toilet bowl (5) and a waste water tank (9), wherein the basic body bears the toilet bowl and delimits a service compartment, and the service compartment is designed in such a manner that the tank can be pushed from the outside via a service flap (10) into the service compartment and can be brought into a liquid-tight connection with the outlet of the toilet bowl, and, for emptying, can be pulled out of the service compartment to the outside. Furthermore, the mobile toilet system (1) comprises an extendable tank support (1a) which, when the surface flap (10) is closed, is stowed and, when the service flap (10) is open, can be extended into a position on the outside (8) of the vehicle outside the service compartment, in which position it absorbs at least part of the weight of the waste water tank (9), which is located completely outside the service compartment, and conducts away said weight onto the vehicle (support of the waste water tank).

Description

Comfort extension for tank

The invention relates to a portable toilet system according to the preamble of claim 1.

In recreational vehicles, in particular motorhomes and caravans (but occasionally also in ships or in mobile living and working containers), the use of the generic portable toilet systems has been more or less standard for quite some time.

The generic portable toilet systems are currently constructed essentially according to the same principle.

The system initially includes a body that carries the toilet bowl. As a rule, a distinction is made between two different design principles. Namely between the so-called "stand-alone" solutions in which the toilet bowl (possibly using a suitable toilet bowl housing) is placed from above on the body and the so-called. "Bank" solutions in which the toilet bowl completely or largely integrated into the basic body.

The main body is usually a large-sized, load-bearing housing part made of plastic, which dictates a part of the side walls and the ceiling (usually the bottom) of a service compartment. As a rule, the main body is open on at least one side in order to be completed there when the vehicle wall or a service flap installed in the vehicle outer wall is installed as intended. The basic body does not have to be a single-shell housing part or even one-piece. Rather, it will usually be a complex composite of different components, which together form the main body. The service compartment formed by the main body holds the waste water tank in its use position. The main body is usually supplied as a prefabricated ready for installation prepared for the vehicle manufacturer component of the toilet system. Instead, the base body in an individual case also z. As a wood or composite slab substructure, the vehicle manufacturer side is provided for the construction of the toilet system - but this is rather disadvantageous because of the associated, unnecessarily high production costs. The demarcated by the body service compartment is accessible through a service door from the outside of the vehicle forth. Through the service flap, the wastewater tank can be pulled out of the vehicle for emptying outward and z. B. to be brought to the designated disposal site at the campsite. Thereafter, the waste tank can be pushed back through the service flap in the service compartment, whereby the outlet of the toilet bowl and the tank are coupled again with each other.

In a few cases, the portable toilet systems under discussion are constructed so that the toilet bowl and the body surrounding the service compartment are spaced apart from each other in the vehicle. The outlet of the toilet bowl and the waste water tank are then not a direct, only dependent on the gravity connection, but only indirectly in conjunction, via a fecal pump.

The difficulty with these portable toilet systems is the same as with all design variants - the full waste tank usually weighs between 15 and 25 kg, depending on the capacity.

Extracting a full waste tank through the service flap is not a very simple undertaking, but at least quite uncomfortable. Because the tank must first be pulled out a large piece. Just before you have pulled the tank completely out of the vehicle, you have to (without of course leaving the waste tank to let go completely) to keep the tank under control when he soon detaches himself from the vehicle and jerks down with his full weight , The re-insertion of the wastewater tank has certain requirements. Because it is important to keep the wastewater tank on the one hand and on the other hand to use it so accurately in the service compartment that the waste water tank can be connected by the insertion again liquid-tight with the rest of the toilet system. In particular, the extraction of the wastewater tank is therefore not only difficult for seniors or petite persons, but quite generally also when the waste water tank is to be taken out on a relatively narrow slope parking space at which the person performing the tank change is lower than the vehicle and so on a position unfavorable for an effective use of force is forced. In addition, thanks to increasingly effective toilet chemistry and ventilation systems, the waste water tanks tend to become larger and thus increasingly unwieldy.

Accordingly, it is an object of the invention to provide a portable toilet system in which the waste water tank easier to pull out of the service compartment and also easier to insert again into the service compartment.

This object is achieved by claims 1 and 2, respectively, depending on which basic type of portable toilet system is under discussion. The inventively provided tank support especially facilitates the removal of the tank essential. It is also a help when inserting the tank. The tank support makes it possible to separate the process of extraction, in which at most a part of the weight of the waste tank must be held by the user, and the subsequent process of lifting the waste tank, into two separate phases.

The tank support according to the invention is designed so that the user can pull the waste tank much further than before from the service compartment without having to keep a significant portion of the weight of the waste water tank at the same time. The invention thus offers the user the possibility in a position in which he has pulled the waste tank far out

- convenient to handle, so as to have the waste water tank under control, if necessary to take a short break, ^• * ^■

- If necessary, if not done from the beginning, first take a more effective use of force permitting body position relative to the wastewater tank without having to balance the tank meanwhile

- and only then raise the waste tank and then have to catch its full weight.

Normally, the tank support is designed to allow the waste tank to be pulled out of the service compartment by at least ³ A without having to hold its weight or part of its weight at the same time. Ideally, the tank support is even designed to allow the tank to be substantially completely withdrawn from the service compartment without having to hold its weight or a portion thereof.

In the prior art, this has been different so far. As a rule, the user stood in front of the open service flap and pulled the waste water tank out to him. As soon as he had pulled the wastewater tank a good distance, he leaned forward, depending on his height, and reached into the service compartment a bit - in order to reach the second handle at the back / top of the wastewater tank To get a grip. If the user now completely pulled out the waste water tank, he suddenly had to absorb its full weight from a body position, which only partially enabled effective use of force. If he wanted to switch to a more favorable position instead, he had to do so in a phase in which he had to balance the wastewater tank at the same time. An advantageous alternative of the invention provides that the tank support is formed by an extract. This is so slidably mounted on the base body that it (in the proper installation of the mobile toilet system in the vehicle) in preferably substantially horizontal direction through the service flap opening can be pulled out through. The tank support is designed in this case as a drawer-like pull-out drawer, from which at least a part can be pulled out through the service door opening to the outside and at least with the waste water tank in its fully extended position, preferably completely.

Another alternative, which can be realized without any special effort, is that the tank support is formed by the service flap, which can be swiveled open and closed anyway. This is struck down for this purpose and constructed so that they can only be swung out to an approximately horizontal position and then goes accordingly to stop. Such that in this position the load of the waste tank can be carried by the service flap. The comparatively low cost of this alternative, however, comes with the not inconsiderable disadvantage that a relatively large gap inevitably remains between the position of the service flap in which it serves as a tank support, and serving as a support for the tank bottom of the service compartment. This gap prevents that the waste water tank can be inserted unhindered even under unfavorable circumstances, and without having to be lifted in between.

A further alternative of the invention provides that the tank support is formed by a Zugbrückenartig formed element which is pivotally hinged on the vehicle interior in the lower area behind the service flap. This in the way that the element can be stowed by being pivoted to a vertical position within the body, namely a position between the sewer tank receiving area and the closed service door. In contrast, the Zugbrückenartige element can be extended by being pivoted through the service door opening through the outside. This embodiment has the advantage that no additional space in the vertical direction is required for the tank support. This is crucial in many cases, since on the one hand the height of the toilet bowl must comply with a certain height range and therefore can not build arbitrarily high and on the other hand below the tank often supply lines must be performed in the vehicle along, in particular ventilation ducts, which have a relatively large diameter. In addition, such a construction in many cases makes it possible to retrofit existing portable toilet systems with a tank support - be it at the vehicle end user or at least at the factory of the toilet system, which saves it from having to modify the manufacturing tools.

In connection with the tank support, two basic concepts are conceivable. Namely, firstly, the concept that the tank extends together with the tank support, ie that the tank support Finally, there is a kind of drawer in which the tank is located and with which the tank can be pulled out together. Preferably, the "drawer" is designed so that the tank is always forced into the same, well-defined position when inserted into it. <br/><br/> Provided with correspondingly precise guides, the drawer is in this case a guarantor for a particularly accurate and material-friendly coupling and uncoupling The concept of the so-called "tank slide", ie the tank support after its extension, is a kind of standing still Guide surface is along which the tank is pushed into the service compartment or pulled out of it.

Leaving aside the comfort, it should be noted that the latter concept has a number of advantages over the pure drawer solution. In the drawer solution, the tank support is pulled out of the tank under full load. Accordingly complex and stable linear guides must have the tank support in the drawer solution. The drawer solution is therefore relatively expensive. The concept of the tank slide is different. In the case of the tank slide, the tank support is initially pulled out unloaded. So it comes with a significantly cheaper storage or management. Because of their leadership or storage is essentially only the requirement to make that the guide intercepts the relatively large bending moment that arises when the tank is pulled along the tank slide after pulling out of the tank support.

It makes sense to provide the tank slide not only a support of the tank, but above all a lateral guide for the tank. Then the insertion of the tank is particularly comfortable. Because the tank then only has to be placed on top of the guide of the tank slide until it engages with it and can then be pushed in without having to take any extra care.

Advantageously, the construction is such that there is no substantial difference in level between the surface of the tank slide which slides or rolls along the waste tank and the bearing surface on which the tank is kept in its operating position. Because then the waste water tank in a train (without settling and lifting the tank) are pushed by the tank slide on the storage area. In practice, however, certain level differences can not always be avoided. This is not critical, however, as long as the level differences do not get too big. Because smaller differences in level can be bridged by a bevel or transition slope. The said slopes are, as seen in the insertion direction, provided either at the front end of the tank and / or between the two surfaces, between which there is to be bridged level difference.

The further the tank support protrudes, ie the more comfort the tank support offers, the greater the bending moment, of course, which stresses the tank support. Since the tank support or its counter- ger are usually made at least partially of plastic, the bending moment may well take a critical size. Advantageously, an additional torque support is therefore provided on the tank support - so that the torque not only on the pivoting enabling hinge or pulling-out enabling guide must be intercepted, but also derived elsewhere, so that relieves the hinge or the linear guide become.

Further advantages and possible embodiments of the invention will become apparent from the embodiments described in more detail below. Showing:

Fig. 1: a portable toilet system of the generic or inventive type of

Seen inside the vehicle, that is seen from the inside of the wet cell;

FIG. 2 shows the toilet system shown in FIG. 1 as viewed from the vehicle exterior, but without the tank support according to the invention, but instead designed according to the prior art;

3 shows a first embodiment of the portable toilet system according to the invention, in which the service flap is struck at the bottom and designed as a tank slide;

Fig. 3a: a detail in the form of a foldable linkage, which can serve as a torque arm;

4 shows a second exemplary embodiment of the portable toilet system according to the invention, which is a modification of the first exemplary embodiment insofar as a telescopic extension is additionally provided here;

Fig. 5: a third embodiment of the portable toilet system according to the invention, in which a zugbrückenartiges element is provided, which can be unfolded through the service flap through and then serves as a tank slide;

6 shows a fourth exemplary embodiment of the portable toilet system according to the invention, which is a modification of the third embodiment insofar as here the drawbridge-like element is foldable;

Fig. 6a: a special embodiment of the drawbridge-like element of Fig. 6; Fig. 7: a fifth embodiment of the portable toilet system according to the invention, which is insofar a modification of the third embodiment, as here the zugbrückenartige element is equipped with a telescopic extension;

Fig. 8: a sixth embodiment of the portable toilet system according to the invention, in which a drawer-like element is provided, which can be pulled out together with the waste water tank through the service flap, and

9a to 9e: a seventh embodiment in action, in which the tank support is designed as a substantially horizontally extendable tank slide.

10 shows a detailed representation of the traction cable winding reel preferably to be used for the systems according to the invention.

Fig. 1 shows first very generally, as the invention or for the invention generic type mobile toilet system 1 can be designed in principle. The example shows one of the typical installation situations in the recreational vehicle. The walls of the vehicle are denoted by the reference numeral 4. The outside of the vehicle is marked with the reference numeral 8.

The portable toilet system 1 according to the invention consists of a main body 2, which carries a toilet bowl 5. The base body 2 is provided on the bottom side with a flange portion 2a, which can be inserted into a corresponding counter flange of the (not shown) one-piece base tray of the wet cell and then forms a watertight connection with this. The flange portion 2a is provided in the vicinity of the outer wall 8 with a passage 6 serving to pass a vent pipe or the like.

The base body 2, on its side facing the vehicle outer side 8, transitions into a box-like installation cover 3, which covers the hydraulic and electrical installation of the portable toilet system. At its top, the installation cover 3 carries the flush button 7 for removing the toilet.

As already mentioned, both the toilet systems known from the prior art and the toilet system according to the invention have the same appearance as shown in FIG. 1 - when viewed from inside the vehicle. The example shown in FIG. 1 thus claims validity as a "general" illustration example, so to speak. Fig. 2 shows the generic toilet system seen from the vehicle outer side 8 ago. In the vehicle outer wall, a service flap 10 is installed, via which, inter alia, the main body 2 demarcated service compartment 17 is accessible from the outside - for example, to take out the full tank 9 and drive to a disposal station at the campsite. From the main body 2, however, only the flange portion 2a can be seen in this illustration, the remainder of the main body is dismantled in this illustration and therefore not shown.

Fig. 2 illustrates how the generic toilet system is configured in the prior art. Namely, so that the user must catch the full weight of the tank as soon as he has pulled the tank completely through the service flap 10 to the outside, on the outside of the vehicle.

Fig. 3 shows the first embodiment of the invention.

In this embodiment, the service flap 10 is no longer laterally but hinged down. Due to their special embodiment, which will be described in more detail below, here it is the service flap itself which functions as the tank support according to the invention.

As can easily be seen, the service flap 10 is here so "massive" designed that its inner surface 11 is substantially at the same level as the bearing surface 12 of the service compartment 17 on which the tank 9 comes to rest when he In addition, the inner surface 11 is ideally equipped with guide rails 13. These are aligned with the corresponding guide rails 14, which may be formed in the bearing surface 12 of the service compartment This makes it possible in many cases, the waste water tank 9, even if it is almost full, pull out without complete settling completely from the service compartment 10 - until it is (at least substantially) completely outside the vehicle on the service cover 10 User can now stop briefly, embrace and possibly verbes his position to lower the tank from the service flap to the floor.

The usual service flaps are regularly constructed, as well as the vehicle side wall. Just like these, they consist of an inner cover layer (usually a thin plastic plate) and an outer cover layer (usually a thin aluminum sheet), between which there is a layer of insulating rigid foam. The said three layers are glued together and additionally held together by the hinge-carrying aluminum frame of the service flap.

The service flap shown in FIG. 3 has a different structure. It is so rigid that it can bear the weight of the full tank without deforming significantly. For this on the one hand, the two guide rails 13, which are formed on the inner surface 11 of the service cover. These stiffen because of their shape. Possibly. they each carry a reinforcement in the form of a metal profile or metal hollow profile incorporated into it from the inside. Preferably, it is moreover such that the component 11a providing the inner surface 11 is designed as a self-rigid component - namely a plate-like with a corresponding wall thickness or as a plastic injection molded part, which on its side facing away from the inner surface 11 with a suitable ribbing is (not shown here). In particular, attention is paid to the fact that the component 11a or the entire service flap 10 is sufficiently reinforced in the region of its hinges and optionally in the region of the traction cables 16 to be discussed in more detail in order to withstand the locally acting loads which arise there , if the flap has a weight of at least 20 kg.

An important component of this concrete solution are the traction cables 16. These are extremely inelastic ropes, which yield only relatively little, even under a flap load of 20 kg and more. Preferably, thin steel cables are used or suitable plastic cables, in particular those which are pre-stretched and therefore correspondingly inelastic. The traction cables 16 are fastened on one side to the service flap 10. On the other hand, they are fastened to the base body 2 at a suitable location on the vehicle or preferably (in order to enable a largely prefabricated delivery unit). In order to prevent the traction cables 16 "somehow" tangled in the service compartment with the service flap closed, they are preferably not directly, but via a corresponding, later to be described in more detail on the roll-up mechanism on the vehicle or on the base body 2. As far as it by Alternatively, a foldable linkage for relieving the service flap can be provided instead of the traction cables 9. This can be configured as illustrated in FIG. 3a (FIG. 3a shows the linkage in an intermediate position, FIG means not yet fully opened service cover).

In particular, in the high price range, telescopically telescoping, especially high-quality rods can instead be used to limit the tilt angle of the service flap. As a further, particularly safe alternative telescopic rods are conceivable, which are spring biased so that they pull the unloaded service flap in the closed position - anyway, as soon as this has been released a little from its horizontal position and thus z. B. a corresponding, the telescopic rod has first been overcome on Zuziehen locking device. This results in a significant security gain. Because the service cover can not open unintentionally while driving even if the user has forgotten to lock them properly. Fig. 4 shows a second embodiment of the invention, which is a further development of the first embodiment shown in Fig. 3. The statements made in connection with FIG. 3 therefore apply mutatis mutandis, unless otherwise noted.

In the first exemplary embodiment shown in FIG. 3, the problem often arises that the service flap is relatively small. It is then not readily possible to completely remove the filled waste water tank from the service compartment and park on the outside of the vehicle on the service cover, without the risk that the waste water tank 9 tilts forward. This is especially true when the vehicle is at an angle, as is often the case on campsites - at least before the vehicle has been made "habitable", ie jacked up and aligned.This is where the design shown in Figure 4 provides a remedy Serving service flap is here provided with two support rods 18, which can be pulled out of the service flap on a conspicuously colored (and thus intuitively indicative of its function) handle 19. This creates a longer contact surface for the safe storage of the filled waste water tank created.

The support rods 18 are each guided displaceably in a cladding tube 21. The cladding tubes 21 are not directly visible in FIG. 4. The two cladding tubes are expediently arranged so that they are installed below the flange strips 13 in the component 11a providing the inner surface 11. In this way reinforce the cladding tubes 21 not only the flange strips 13, but above all give the service flap 10 a much higher flexural rigidity. In addition, this design leads to the fact that between the horizontal surfaces of the guide rails 13 and the horizontal surfaces of the support rods 18 only a relatively small paragraph is encountered, which makes the reinsertion of the tank is not too great difficulty.

The leadership of the support rods 18 (in their sheaths 21) and the service cover 10 are designed and matched to each other that the service cover 10 can be easily folded and locked after the complete insertion of the support rods 18. In the embodiment shown in Fig. 4, the handle 19 is provided for this purpose with a recess through which the bolt can reach when closing 10 behind the service flap frame.

In fully extended condition, the support rods 18 are expediently blocked in relation to the cladding tube or the service flap 10 (preferably elastically releasably latched). This prevents them from being inadvertently pushed into the ducts 21 when the tank is put on.

Of course, the support rods 18 may also be telescopically multiple times, which is not shown here. In general, let it be said that the construction of the support rods 18 and the Hullrohren 21 remotely reminiscent of the telescopic handles of luggage trolleys, except that here is a much more stable design, since a very significant bending moment must be overcome

5 shows a further exemplary embodiment of the invention

Here, the tank support is designed in the form of a zugbrucken-like element 19 It consists here of a relatively thin sheet (steel 1-2.5 mm, AIu 2-5 mm), which receives the necessary torsional rigidity by appropriate beads or folds, here in short form Instead, a thin, preferably ribbed on the underside ribbed plastic plate or even a wooden plate can be used instead (see also FIG. 6).

When the service door 10 is closed, the drawbridge-like element is stowed in (approximately) a vertical position between the waste tank 9 and the service door 10. After opening the service door 10, the pull-bridge like member 19 can be pivoted outwardly through the service door opening into an approximately horizontal position In this position, the inner surface 11 of the Zugbruckenartigen element and provided in the service compartment for the tank bearing surface 12 approximately in a plane as far as guide rails are provided, these are aligned Advantageously, the zugbruckenartige element is articulated so that in the unfolded state between his Inner surface 11 and the bearing surface 12 of the Serviceabteiis no gap opens, which could be a hindrance when pulling out or pushing the waste water tank In this respect, this embodiment differs from the previously described

Another, with the help of Figure 5 easily recognizable advantage of this solution is that it is very well suited to nachzurusten service compartments existing vehicles, usually without having to make further changes Especially when the zugbruckenartige element as a thin-walled metal or Aluminum plate ausfuhrt, it takes in the horizontal direction parallel to the service flap hardly more than 10 to 20 mm in space It can therefore usually be found in the already found between the waste water tank and the inner surface of the service flap gap If this space is not sufficient, there is a possibility To make room in that the service flap previously existing on the vehicle (ie only the movable flap) is replaced by a slightly flatter built flap that fits into the existing frame

For the sake of completeness, it should be pointed out that the drawbridge-like element also requires a separate torque support. Therefore, the pull-bridge-like element is provided, as described above for the first and second exemplary embodiments, with tension cables 16 which are at least a good part of the wastewater tank 9 filled It is also true here that the torque arms are not necessarily designed in the form of tension cables 16 but also the other means previously mentioned for that purpose.

In the embodiment shown in FIG. 5, the surface of the drawbridge-like element available as a storage surface is limited by the size of the clear cross section of the service flap opening. In cases where only small service flaps can be provided, therefore, there is also the danger here that the filled waste water tank 9 has the tendency to tip forward.

The remedy in this respect creates the embodiment shown in FIG. 6, which is a corresponding further development of the exemplary embodiment shown in FIG. 5 - which is why what has been said about FIG. 5 applies mutatis mutandis.

The zugbrückenartige element 19 shown in FIG. 6 consists of an inner portion 19 a and an outer portion 19 b. The inner portion 19a is pivotally hinged in the lower portion of the service compartment 17, as already described above. The outer portion 19b, in turn, is pivotally hinged to the upper edge of the inner portion 19a, such that the inner portion 19a and the outer portion 19b can be folded so as to be at least approximately close to each other - like that of FIG illustrated. It is important that the joint that connects the inner portion and the outer portion is designed so that the two sections at the moment can not pivot relative to each other by at least substantially forming a common plane. In this way it is sufficient to provide only on the outer portion 19b traction cables 16. Because then the pull ropes 16 prevent the two sections 19a and 19b from pivoting downwards overall and preventing the joint between the two sections from pivoting relative to one another, ie "sagging." It goes without saying that as an alternative to the pull ropes 16 For example, foldable rods may be provided, such as those shown in FIG. 3a.

6, it is easy to see that the foldable drawbridge-like element can be pulled out with a hand movement, since the pull cables 16 and the joints force the correct alignment / unfolding of the drawbridge-like element as soon as it is pulled on it.

FIG. 6a shows a specific design proposal for the drawbridge-like element 19 embodied here as in FIG. 5 as a two-part sheet metal construction. The crucial point with this construction is that the inner element 19a and the outer element 19b are here (seen in the horizontal direction). can be hinged to each other on lap joint - the (hatched) hinge is marked with the letter S, the hinge axis with the letter combination SA. The outer element 19b is pivotable relative to the inner element 19b in the direction of the arrow F, but only if the tension cables 16 do not come into action and prevent this. In this way it is very easy to realize a foldable but sturdy tank support that does not need a lot of space when stowed away.

The embodiment shown in FIG. 7 represents an alternative to the construction shown in FIG.

Here the zugbrückenartige element 19 is not foldable, but instead provided with telescoping support rods 18 of the type already described above.

The exemplary embodiment shown in FIG. 7 is characterized in that the drawbridge-like element here has a continuous flat inner surface 11 (bearing surface for the tank). To achieve this, the cladding tubes 21 are inserted from the bottom or the outer side of the Zugbrückenartigen element forth in recesses or grooves on Zugbrückenartigen element and bolted with their laterally projecting flange strips 22 on Zugbrückenartigen element. In this way, the cladding tubes do not interrupt the plane of the inner surface 11. However, they are still so attached that in the extended state, not too great a step between the inner surface 11 and the corresponding bearing surfaces of the support rods 18 results.

In many cases, a useful modification of this embodiment is that you do not screw the cladding tubes 21, as shown, from the bottom or the outside of the zugbrückenartige element, but from the top or the inside thereof. The cladding tubes 21 are then completely or at least partially over the inner surface 11 of the Zugbrückenartigen element over and thereby form the same also also guide rails, similar to the marked with the reference numeral 13 guide rails of FIG. 3rd

In addition, the figure also illustrates an alternative design option for the torque arm. The torque arm is designed here as a pressure member 23, more precisely as a hinged support lever. To stow the zugbrückenartige element, the support lever is folded in the direction of the arrow P flat against the underside of zugbrückenartigen element. Before the extension of the drawbridge-like element of the support lever is folded against the direction of the arrow in the position shown in FIG. 7. Once the zugbrückenartige element is fully extended in its approximately horizontal position, the support lever comes with its elastic buffer 25 with the side wall of the vehicle in contact and is supported thereby against this. The recess 24 provided along the support lever prevents the support lever from pressing against the service flap frame and damaging it.

It goes without saying that as a rule two support levers of the type shown in FIG. 7 are provided, on both sides. Fig. 8 shows a further embodiment, which uses a slightly different concept to realize the tank support according to the invention.

The tank support is designed here as a horizontal extension 26 in the manner of a drawer. On this horizontal extension of the waste water tank 9 is located. It can be pulled together with the horizontal extension 26 through the service door opening on the vehicle outer side 8.

It can be seen from FIG. 8 that the horizontal extension 26 consists of a bottom 27 preferably made as a thin-walled sheet-metal part, which is held displaceably on both sides by linear guides 28. The outsides of the bottom 27 are bent or folded. They thus form flanges for the attachment of the linear guides 28 designed here as heavy-duty ball end pulls. Together with the guide strips 13 pressed into the sheet metal, the flanges impart the necessary strength and torsional rigidity to the bottom plate 27.

This embodiment of the horizontal extension 26 takes into account the fact that only a small amount of space is available in the vertical direction in the service compartment in order to accommodate not only the tank but also the horizontal extraction serving as a component. The horizontal extension is designed so that the linear guides 28 come to rest laterally next to the waste water tank 9 and the bottom 27 applies only as little as possible in the vertical direction. In this way, there is no conflict with the area underneath the waste water tank for the passage of ventilation ducts and the like, to be kept clear, cf. Fig. 1, reference numeral 6th

An advantage of this construction is also that the waste water tank 9 can remain in engagement with its lock 29 until it has been completely pulled out of the service compartment. For safety reasons, it is provided that at least one of the linear guides 28 (or the bottom 27) automatically lock as soon as the horizontal extension 26 has been completely inserted into the service compartment with the drain tank properly placed. At the same time the service flap or the horizontal extension are designed and coordinated so that the service cover can only be closed when the horizontal extension has been fully inserted. To realize such a lock, a suitable locking mechanism is recommended, which snaps in after the complete insertion of alone - and can be solved with a short hand movement again when the horizontal extension is to be pulled out again. By means of such a lock is easily and effectively ensured that the vehicle user does not accidentally start with open service flap and extends the effortless moving horizontal extension already in the next gentle curve along with the tank.

Advantageously, the linear guide 28 is not made in one piece, but for example as a telescoping Schwerlastkugelauszug. Such a configuration has the advantage that the waste water tank 9 can be pulled out of the service compartment very far without that the service compartment (seen in the insertion direction) had to be longer in order to allow a complete insertion of the ball extract

FIGS. 9a to 9e show a further exemplary embodiment of the invention in action. Here, the tank support is formed as a substantially horizontally extendable grate 29 which serves as a tank slide. The grate is stowed in a narrow compartment 30 (which is difficult to recognize here). formed below the provided in the service compartment 17 for the tank 9 bearing surface 12 After opening the service flap 10 (Fig 9a), the grate 29 is pulled out of its compartment 30 (Figure 9b) Now, the tank can be pulled along the grate 29 to the outside 9g). After a pause or after comfortable gripping of the tank, it can be lifted off the grate 29 unhindered, eg in the direction of the arrow W (FIG. 9d) and moved away (FIG. 9e) ) At least if the grate is designed as a comparatively thick-walled sheet metal part, it can be designed as a pure cantilever, without torque support, as shown in Figure 9

FIG. 10 shows a preferred exemplary embodiment of the pull-rope reel-up reel 31 already mentioned above

This is conceivable simple but sturdy constructed It consists ι W of three parts, namely a bobbin 32 which is aufkhpst on a Achsdorn D of Haltekorpers 33 z B, and a suitable torsion spring 34 made of round or strip steel, in a pocket 35th of the bobbin is received and is hung at one end in the bobbin and the other in the Haltekorper

The traction cable is dimensioned so that it is completely unwound from the take-up reel at the moment when the tank trolley to be intercepted by the traction cable has reached its fully extended position. The narrow design of the spool, its rather massive axle spike and correspondingly thick-walled spool body then allow the Transmission of high tensile forces - even if all components of the pull rope reel spool are made of plastic, which ι d R is the case The restoring forces of the spring and accordingly the spring itself can be quite weak, since only certain frictional forces are overcome to Wind up the flaccid pull rope quickly enough when the tank rest is retracted LIST OF REFERENCE NUMBERS

(1) Mobile toilet system (1a) Tank support

(2) Base body (2a) Flange section

(3) Installation cover

(4) Walls of the camping vehicle

(5) toilet bowl

(6) Durchläse for ventilation line or the like

(7) Rinse button

(8) outer wall

(9) waste water tank

(10) Service cover

(11) Inner surface of the service door

(12) Storage area of the service compartment

(13) Guide rails of service cover

(14) Guide rails of the bearing surface

(15) Handle of the tank

(16) Pulling cables

(17) service compartment

(18) support bars

(19) drawbridge-like element

(19a) inner portion of the drawbridge-like element

(19b) outer portion of the zugbrückenartigen element

(20) bearings

(21) Cladding tube

(22) Flange strips

(23) pressure element

(24) recess

(25) Elastomer buffer

(26) Horizontal extension

(27) tinny floor

(28) linear guides (ball extract)

(29) rust

(30) storage compartment

(31) Pull rope take-up reel

(32) bobbin

(33) Bearing body (34) torsion spring

(35) bag

Claims

claims

1. Mobile toilet system (1) for a recreational vehicle, with a purpose to be installed on the vehicle interior in front of a service cover body (2), a toilet bowl (5), a waste water tank (9), wherein the main body on the one hand carries the toilet bowl and on the other hand delimits a service compartment and the service compartment is designed so that the tank can be inserted from the outside into the service compartment via the service flap (10) and brought into fluid-tight connection with the outlet of the toilet bowl and can be pulled out of the service compartment for emptying, characterized in that the Mobile toilet system (1) comprises an extendable tank support (1a) which is stowed with the service flap (10) closed and with open service flap (10) in a position on the vehicle outer side (8) extendable outside the service compartment in which they at least a part of Weight of the completely outside d it intercepts waste water tanks (9) located in the service compartment and discharges them to the vehicle (support of the waste water tank).

2. Mobile toilet system (1) for a recreational vehicle, comprising a base body (2), a toilet bowl (5) and a waste water tank (9), wherein the base body delimits a service compartment and the service compartment is designed so that the tank via the service flap (10 ) can be inserted from the outside into the service compartment and brought into liquid-tight connection with a pipe coming from a fecal pump and can be pulled out of the service compartment for emptying, characterized in that the portable toilet system (1) comprises an extendable tank support (1a), which is stowed in the vehicle interior with the service flap (10) closed and with open service flap in a position on the vehicle outer side (8) outside the service compartment is extendable, in which it captures at least part of the weight of the completely outside the service compartment located waste water tank (9) and to the vehicle derived (support of Abwasserta nk).

3. portable toilet system (1) according to claim 1 or 2, characterized in that the tank support (1a) is formed by an extract, which is so on the vehicle, preferably on the base body (2) slidably mounted, that he (preferably) after proper installation can be pulled outwardly in a substantially horizontal direction through the service door opening at horizontally standing vehicle.

4. portable toilet system (1) according to claim 1 or 2, characterized in that the tank support (1a) by the up and to pivotable service flap (10) is formed, which is posted for this purpose below.

5. portable toilet system (1) according to claim 1 or 2, characterized in that the tank support (1a) by a Zugbrückenartig trained element (19) is formed, which is pivotally hinged on the vehicle interior in the lower area behind the service flap (10), such in that the element (19) can be stowed by being pivoted to a vertical position within the body (2) between the sewer tank (9) receiving area and the closed service door (10) and being able to be extended by passing through the service door opening is pivoted outwards.

6. portable toilet system (1) according to any one of the preceding claims, characterized in that the tank support (1a) is designed as a tank slide, such that the waste tank, the tank slide during normal withdrawal or insertion can slide or roll along, the tank slide preferably not only a support, but at least partially also a lateral guide (13) of the moving relative to her sewer tanks offers.

A portable toilet system (1) according to claim 5, characterized in that there is no between the surface (11) of the tank slide which slides or rolls along the waste tank and the bearing surface (12) on which the tank in the service compartment is held in its operating position significant difference in level, so that the waste tank can be pushed in one go from the tank slide on the bearing surface, possibly supported by a lift beveling on the - seen in the insertion direction - front end of the tank or between the different surfaces, wherein the lifting bevel is designed in that it raises the tank when it is pushed in by itself when the tank encounters a level difference between the surface (11) of the tank slide and the bearing surface (12).

8. portable toilet system (1), characterized in that the tank support (1a) is independent of its swinging enabling hinge or its undressing enabling linear guide with an additional torque arm (16; 16a, 23) is equipped.

9. portable toilet system (1) according to claim 8, characterized in that the torque arm is at least one collapsible or variable-length tension member (16; 16a), which is fixed on one side to the tank support and on the other side in the service flap frame and at least a part of the tank support tends to pivot downward load by the application of traction.

10. portable toilet system (1) according to claim 8, characterized in that the torque arm is at least one pressure member (23) which is fixed on one side pivotally mounted on the tank support, such that the pressure member relative to the tank support can be swung so that it supports the tank support against the vehicle body, in fully extended position of the tank support.

11. portable toilet system (1) according to claim 9, characterized in that the pressure member (23) fixed in its folded position on the tank support (19) preferably locked or clipped, such that the pressure member, the insertion or pivoting back of the tank support and the Closing the service flap (10) is not hindered.

12. portable toilet system (1) according to claim 8, characterized in that the tension member (16) is a bending soft traction means, one end of which is attached to a spring-biased device, in particular in the form of a reel spool, the traction means in the course of reinsertion or reinsertion the tank support retracts or rewinds.

13. portable toilet system (1) according to claim 6, characterized in that the tension member is a two-way hinged, multi-part rod (16a), the mentel again copied or folded together in the course of reinsertion or reinsertion.

14. Mobile toilet system (1) according to claim 3 or claim 3 and one of the dependent claims, characterized in that the horizontal extension is mounted by means of a linear telescopic extension on the base body, preferably in the form of a telescopic heavy duty ball extension.

15. portable toilet system (1) according to claim 15, claim 3 or claim 3 and one of the dependent claims, characterized in that the horizontal extension (26) is designed in the manner of a drawer, on which the waste water tank (9) rests and with the Waste water tank (9) together through the service flap opening on the vehicle outer side (8) can be pulled, at least partially.

16. A portable toilet system (1) according to any one of the preceding claims in conjunction with claim 3, 4 or 5, characterized in that the tank support is telescopic by consisting of a first portion (11; 19a) slidably mounted or pivotally mounted on the base body and a second section (19b) that is so is movably mounted on the first section, that it can be pulled out of this and pushed into this.

17. portable toilet system (1) according to any one of the preceding claims in conjunction with claim 4 or 5, characterized in that the tank support is foldable by consisting of a first portion (19 a) which is pivotally mounted on the base body and a second portion ( 19b) pivotally supported on the first portion such that the first and second portions are foldable relative to one another.