Flexible built-in furniture and interior with a flexible built-in furniture

Abstract

The invention relates to a flexible piece of built-in furniture for a small interior space (2), in particular a camper van (1), comprising a functional surface (3) movably mounted in a guide via bearing means, which can be moved back and forth from a use position to a storage position. The guide comprises a rail system (4) with at least two opposing guide rails fastened on opposite sides of the space. Known built-in furniture has the disadvantage that it is difficult to operate or takes up a lot of space. The invention improves this in that the guide rails comprise a first section (4') and a second section (4''). In the use position, the functional surface (3) is held in the first section (4') via the bearing means. When the functional surface (3) is moved into the further position, the bearing means are held in sections of the guide rails outside the first section (4'). The guide rails are designed such that the functional surface (3) is displaced into a different, horizontal or vertical plane.

Description

[0001] The invention relates to a flexible piece of built-in furniture according to the preamble of claim 1. This type of built-in furniture is preferably used in small spaces intended for different purposes, for example, as a bedroom or as a living space. These can be the interiors of caravans or mobile homes, but also small rooms in an apartment, one-room houses (so-called tiny houses), cabins in shipping and aviation, or the loading area of ​​a caravan, without the application of the invention being limited to these.

[0002] The built-in furniture has a movable functional surface. In a preferred embodiment, the functional surface can be moved from a use position to at least one second position, in particular an inactive storage position. This can be done either motor-driven via a guide or manually. The guide, in turn, is part of a mechanism with a rail system which, in the installed position of the built-in furniture, has at least two guide rails arranged on opposite sides of the functional surface, in which the edges of the functional surface are guided, at least in sections, in a movable, direct or indirect manner. This allows the functional surface to move flatly, bending, or folding along the guide rails.

[0003] A flexible piece of built-in furniture of this type is known from EP 2 842 803 A1. This built-in furniture serves as a bed for the cargo area of ​​a vehicle, particularly a caravan. Guide rails are attached to the vehicle on both sides of the cargo area, allowing the slats of a slatted frame to be moved from an inactive position to a position where the slatted frame forms a sleeping surface for one person. While this device allows the cargo area to be used as a sleeping area, it has the disadvantage that the pushed-together slats take up a considerable amount of space in the inactive position.

[0004] DE 10 2004 041 581 A1 discloses a sleeping surface for the cargo area of ​​a vehicle, which can be rolled out from two rollers, each arranged opposite one another on one side of the cargo area. The sleeping surface is held in shape by tensioning the unrolled layer, similar to a hammock. In addition to the disadvantage of requiring more space, this design has the further disadvantage that sleeping comfort is limited due to the sagging of the sleeping surface. A similar solution with the same disadvantages is described as a bed for a vehicle in US 1 589 960 A and as a bed for the sleeping berth of a truck in DE 10 2011 117 365 A1. A bed in the shape of a hammock with all the disadvantages of a hammock in terms of sleeping comfort is also known from GB 2 604 378 A.

[0005] EP 3 006 264 A1 discloses a drive and guide mechanism for a folding bed in a camping vehicle. The drive and guide mechanism consists of a drive shaft with double rollers, on which two belts connected to the four corners of the bed are wound on both sides. The bed can be pulled upwards using the rollers. The disadvantage of this solution is that the bed is moved from top to bottom and vice versa, so the corresponding freedom of movement must be maintained. Furthermore, when inactive, the bed hangs freely below the ceiling of the camping vehicle and thus covers, for example, skylights or similar objects. Similar solutions with the same disadvantages are known from EP 4 126 592 A1, EP 3 936 383 B1, and CA 2 759 640 A1.

[0006] EP 1 667 553 A1 discloses a folding bed for use when camping, on boats, furnishing one-room apartments, and other types of accommodation where space is limited. The bed can be moved back and forth between a lower position of use and an upper, inactive position in which it is arranged below the ceiling of the room. It has at least a first frame and a second frame articulated thereto, the two frames together forming a metal structure for the slatted frame. The first frame is articulated to the wall of the room, and the second frame is held to the ceiling by cables. It can be moved back and forth between the lower position of use and an upper inactive position by winding and unwinding the cables.

[0007] This well-known folding bed also has the disadvantage that, despite the bed being more stable, a comparatively large amount of space is required for the folding movement of the frame.

[0008] The object of the invention is therefore to create a flexible piece of built-in furniture that offers the highest possible level of comfort and requires the smallest possible space, and that can be easily operated during and after transferring to the inactive position. A further object of the invention is to create an interior, for example, of a camper or caravan, a cabin in shipping or aviation, or a house, with such a flexible piece of built-in furniture.

[0009] This object is achieved according to the invention by a flexible piece of built-in furniture according to claim 1. The new piece of built-in furniture is characterized in particular in that the guide rails comprise a first section and a second section. In the use position, the functional surface is held in the first section via the bearing means, while after the functional surface has been moved into the further position, the bearing means are held in the guide rails outside the first section in a second or third section. In this area of ​​the guide rails, which is different from the first section, the guide rails are designed such that the functional surface is displaced by displacement along this section into a horizontal or vertical plane different from the plane of the use position. With regard to the interior space with such a piece of built-in furniture, the object is achieved by an interior space according to claim 13.

[0010] The built-in furniture according to the invention is intended for use in small spaces. These can be, for example, the applications mentioned above in connection with campers or caravans, cabins in shipping or aviation, or other small spaces. Of course, the invention is not limited to this; the principle of the new built-in furniture can also be used where sufficient space would actually be available for larger furniture. The built-in furniture can, in principle, be any type of furniture that is intended to be movable. In particular, the built-in furniture can be a bed, a table, or another worktop.

[0011] Until now, such built-in furniture, as is evident from the known state of the art, was either folded up or down, or moved via cable pulls, for example, pulled up to the ceiling of the room. This has the disadvantage that the built-in furniture containing or forming the functional surface remains close to the position of use, whereby there is not always sufficient space for this, and the visual impression is often perceived as disturbing. The invention now makes it possible to relocate the built-in furniture particularly easily to a position where it is no longer obstructive or even no longer visible.

[0012] The particular advantage is that the guide rails can be easily arranged within the room. Depending on the size of the room, the guide rails can be installed on the walls, for example, and attached to the walls opposite one another. Alternatively, they can be arranged and attached in other ways. For example, guide rails can be foldable or can be fully or partially installed before the built-in furniture is moved. If, for example, a camper or caravan has a half-height row of furniture similar to a sideboard or kitchen unit running the length of the room, part of the guide rail, in particular the first section, can be placed on one side of this row of furniture before the built-in furniture, which can be designed as a bed, for example, is moved. This can be done by plugging together or unfolding a foldable section as needed.

[0013] Removable or movable parts of the guide rail can be fixed and secured using fasteners. Depending on the space available, the installation can be carried out on both sides or just one side of the built-in furniture. The movable parts of the rail system, or those that can be assembled by plugging them together if necessary, can be supported by floor supports, side cross members for connecting to a side wall, existing furniture, or a combination of these.

[0014] Because the functional surface is guided along the guide rails, the built-in unit can be moved particularly easily along the guide rails to another level. This other level can be parallel to the intended use position or at an angle to it. In the latter case, the angle is preferably a right angle. Furthermore, it is possible to completely rotate the built-in unit and relocate it, for example, under a raised floor. The course of the guide rails, i.e., their curvature and other design, determines the relocation of the functional surface to the other level.

[0015] The functional surface can be a rigid, continuous surface. This is particularly useful if the built-in furniture is, for example, a rather small table. If, on the other hand, a bed is intended as built-in furniture, the lying surface will in many applications be too large to be moved into the further position as a whole. This is particularly the case if, for example, it is a larger bed for two people. For this to happen, there would have to be sufficient free space to rotate the functional surface or to move it at a different height. In such cases, the functional surface is preferably designed in several parts, whereby the individual parts can be connected to one another with hinges or can be mounted separately in the rail system.

[0016] If the individual parts of the functional surface are indirectly connected to one another via the guide rails of the rail system, they are simply lined up one behind the other in the use position. In such a case, locking devices can prevent the individual parts of the functional surface from being accidentally pushed apart. For this purpose, either the individual parts of the functional surface or the rail system can have appropriate braking or locking devices. The multi-part design of the functional surface can also be used to divide these parts into two or more parts when the functional surface is moved from the use position and to store them separately. For this purpose, the rail system can have branches that allow the individual parts to be stored separately.

[0017] In a first embodiment of the invention, the rail system comprises the two aforementioned opposing guide rails, which can be mounted, for example, opposite each other on opposite sides of the room. The mounting can be done directly or indirectly to the walls or to existing fixtures, such as furniture. The first section of these guide rails holds the functional surface in the use position. For example, these first sections can be straight, lying in one plane. The functional surface is then supported, for example, with four bearings in these first sections.

[0018] Each first section is followed by a second section, which initially allows the functional surface to be moved to a different level. For this purpose, the guide rail sections in this section are curved. If, for example, the functional surface is to be relocated vertically to a level below the ceiling or on the floor of the room, each individual guide rail would essentially have the shape of an "S" with extended upper and lower legs. The extended sections are then each long enough that the functional surface is again arranged horizontally at the end positions.

[0019] Alternatively, the guide rails can also be bent into a U-shape so that the functional surface can be moved to a level below or above the usage position. Such a displacement is usually accompanied by a curvature of the functional surface during movement. Otherwise, the space required to fold or pivot the functional surface would be too large. If sufficient space is available, a continuous functional surface can of course be used. However, since this is not usually the case, especially not in the small living spaces of a camper or caravan, the functional surface in this case is designed with the individual segments described above or is slightly bendable so that it can be deformed, for example following the curvature of the guide rails, during movement from the usage position to the further position. This also allows the realization of comparatively tight curves.

[0020] For example, the built-in furniture can be designed as a bed, with the functional surface then being able to serve as a base for a mattress or even as complete upholstery. In the area of ​​the desired sleeping height, straight sections of the guide rails are provided as the first section. This is followed by a U-shaped section of the guide rails, which in turn merges into a straight part of the second section. If the segmented guide surface, the individual segments of which are guided, for example, on both sides in one of the two opposite guide rails, is now moved, the functional surface serving as a sleeping surface is rotated 180° and moved, for example, below the floor of the room so that it is no longer visible. The opening through which the guide surface passes through the floor when moving into the stowed position can be closed with a flap.In this way, a relatively shallow cavity under the floor can be sufficient to completely stow the bed away from the user's view. The same principle can, of course, be used for a table or to relocate the functional surface into a raised ceiling or side wall.

[0021] Furthermore, it is possible to use a divided functional area, whereby a first part can be moved to a first storage position via a common or a first rail system, and a second part can be moved to another storage position via the common or a second rail system. The two storage positions can, for example, be spaces in, in front of, or on the side walls, or on the ceiling and floor of the room. In the use position, the two parts can then be arranged side by side or behind each other and, if desired, connected to each other.

[0022] Finally, the rail system can also feature guide rails with three sections. These can be used to provide three positions in which the functional area can be arranged. An intermediate position can be used to temporarily position the functional area, for example, to create space for loading a camper. Furthermore, the intermediate positions can also be used to facilitate maneuvering of the functional area.

[0023] For example, as described above, it is possible to move the functional surface with a U-shaped, bent second section of the guide rails, first rotating 180°, below the ceiling of the room. The functional surface can then be moved in the opposite direction into a third section of the guide rails, which, with its orientation, provides the final storage position. In this case, the functional surface can be moved from the perspective of the second section of the guide rails into both the first and third sections.

[0024] The selection of which section is used as the destination can be made via a switch, which can also be switched automatically upon reaching the respective end point of the third, second, and / or first section of the guide rails. With an easily movable functional surface, the user can also ensure that the desired section of the guide rails is selected by gently pushing or pulling on the functional surface. Finally, manual switching of the switch is also possible.

[0025] Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

[0026] In the drawings shows: Fig. 1 a camper with a first embodiment of a built-in furniture according to the invention in a partially sectioned side view, Fig. 2 the detail “Z” from Fig. 1 in enlarged view, Fig. 3 the rail system of the Fig. 1 and Fig. 2 shown design, Fig. 4 the in Fig. 1 camper with built-in furniture moved towards the storage position, Fig. 5 the in Fig. 4 shown camper with built-in furniture moved further into an intermediate position, Fig. 6 the in the Fig. 1, Fig. 4 and Fig. 5 shown camper with built-in furniture moved into the stowed position, Fig. 7 another design of a camper with a flexible built-in furniture, Fig. 8 of the Fig. 7 campers shown with built-in furniture moved into the stowed position, Fig. 9 a third design of a camper with a flexible built-in furniture, Fig. 10 the rail system of the Fig. 9 shown built-in furniture, Fig. 11 a variant of the Fig. 10 shown rail system, Fig. 12 a detailed view of a rail system with motor drive, Fig. 13 a section of a camper interior with a motor-operated built-in furniture, Fig. 14 a schematic detailed view of a variant of the rail system with a foldable first section of the guide rail and Fig. 15 a schematic detailed view of another variant of the rail system with a pluggable first section of the guide rail.

[0027] In Fig. Figure 1 shows a first embodiment of a piece of built-in furniture according to the invention. This is a mobile home, a so-called camper 1. This has an interior 2, which is located, for example, behind the driver's cab and is used as living space. In the rear area of ​​the interior 2, a stylized utility space 5 is depicted, which could be, for example, a bathroom. This is a comparatively compact camper 1 with an interior 2 that must be used as multifunctionally as possible.

[0028] A reclining surface 3 is provided in the interior space 2 as a functional surface. This reclining surface is formed, for example, from four individual segments. During the day or while traveling, users will want to relocate the functional surface 3 to use the interior space 2 for other purposes. For example, a table can be placed here. According to the invention, a rail system 4 is provided to easily relocate the functional surface 3. In the illustrated embodiment, this rail system allows the functional surface 3 to be relocated first under the ceiling and then into the rear space of the interior space 2. However, this is only an exemplary solution.

[0029] Fig. 2 shows the detail Z with the rail system 4 from Fig. 1 in an enlarged view. The direction of movement of the functional surface 3 is indicated by the arrows. In the position shown, the functional surface 3 is in the use position. The bed is therefore ready for use by one or more people. When the bed is no longer in use, the user slides the functional surface 3 to the left. Here, the four segments that together form the functional surface 3 are mounted individually on each side in the guide rails of the rail system 4, which is stylized in the drawing by the black dots.

[0030] The rail system 4 has two opposing guide rails, each of which can be attached to a side wall of the camper 1 or also in the room or to other, preferably permanently installed, furniture. They have individual sections, with a first section of the guide rail 4' arranged horizontally at the height of the sleeping position or the usage position. Adjoining this section in the direction of the rear of the vehicle is a U-shaped, bent section of the guide rails. Due to this bending of the guide rails, when the functional surface 3 is moved in the first direction of the arrow, the functional surface 3 is rotated by 180° and relocated below the ceiling of the interior 2.

[0031] In the illustrated configuration, the functional surface 3 can then be pushed all the way back, with the guide rails bent downward by 90°, so that in the final stowed position, the functional surface 3 is arranged vertically at the rear of the interior 2. The position under the ceiling of the interior 2 is therefore an intermediate position in which the functional surface 3 can be temporarily stored largely without causing interference. This can, of course, also be the final stowed position.

[0032] The intermediate position has the advantage that both the rear of the vehicle and the area of ​​the interior 2, where the functional area 3 is located in the use position, are freely accessible. The accessibility of the rear can be used, for example, for loading the vehicle, while when the camper 1 is occupied in the parked position, the functional area 3 is relocated to this rear area.

[0033] In Fig. 3 is the rail system 4 of the Fig. 1 and Fig. 2 as an individual part. It can be seen that the use position is provided by the first section 4' of the guide rails. This is a horizontal section of the guide rails running at mid-height. This is followed by the U-shaped bent area, which merges into the second section 4" of the guide rails, in which the functional surface 3 is arranged under the ceiling of the vehicle. In the opposite direction, the third section 4''' of the rail system 4 is connected to the first section 4' and the second section 4'' via a switch-like connection.

[0034] Due to the bend in the transition area between the first section 4' and the second section 4'', the user does not have to do anything other than move the individual parts of the functional surface 3 to transfer the functional surface 3 into the second section 4''. If the functional surface 3 is now to be transferred into the third section 4''', this can be done either by the user pushing the individual segments of the functional surface 3 upwards when moving the functional surface 3 so that they cannot branch off downwards, or by adjusting appropriate guide means to prevent them from slipping downwards. The guide means can be designed like a conventional switch in a railway track system and can be switched manually or automatically.

[0035] In the Fig. 4, Fig. 5 and Fig. 6 is the movement of the functional surface 3 from the use position (compare Fig. 4) into the further position under the ceiling (compare Fig. 5) and further into the final storage position (compare Fig. 6).

[0036] Fig. 7 and Fig. 8 show a further embodiment of the invention. In this embodiment, the functional surface 3 is also the bed of a camper 1. The position of use is in Fig. 7. The camper 1 shown here has a double floor, which has a flap 12 in the rear area, through which the interior 2 of the double floor can be accessed or closed.

[0037] The rail system 4 is designed such that by moving the functional surface 3 from the use position in the first section 4' of the guide rails to the stowed position in the second section 4'' of the guide rails, the functional surface 3 is relocated through the flap 12 under the upper part of the false floor. This means that it is not visible in the stowed position and also protects it from dirt. It does not have to be a false floor; the space under the upper side of the floor can also be larger and thus partially serve, for example, as a luggage compartment. Of course, a false ceiling can also be used in the same way to elegantly conceal the functional surface 3.In such a design, it is of course expedient to provide a motor drive which makes it easier to move the functional surface 3 into the often inaccessible space of the raised floor or the false ceiling.

[0038] The design according to Fig. 7 and Fig. 8 additionally has a table 6, which can be moved via lifting means 8 from a use position, which can, for example, correspond to the use position of the functional surface 3, into a stowed position, here under the ceiling of the camper 1. These lifting means 8 are designed here as a cable pull 7. Such a solution is known from the prior art. After stowing the functional surface 3, the user can simply lower the table 6 from the ceiling and subsequently use it, whereby the lifting means 8 designed as a cable pull 7 have the advantage that the table 6 does not have to extend from one side to the opposite side of the camper 1.

[0039] In Fig. A third embodiment of the invention is shown in Figure 9. This comprises a rail system 4 with two individual guide rails. These guide rails are Fig. 10 shown in detail. For the front area and the rear area of ​​the functional surface 3, a guide rail is provided on each side of the functional surface 3. The rail system 4 thus has two individual rails on each side, making a total of four. The individual rails are curved in such a way that when the functional surface 3 is moved backwards, both areas, the front and the rear area, are moved upwards simultaneously. This can, for example, be a position under the ceiling of the camper 1. Such a solution is particularly suitable when the room is long enough to also arrange the functional surface 3 vertically behind the position of use.

[0040] The Fig. 11, however, allows the functional surface 3 to be stored in the stowed position, as in Fig. 6, to be arranged vertically in the rear area of ​​the camper 1. For this purpose, the rear individual rail, which here forms the second section 4" of the guide rails, is guided vertically downwards so that the rear area of ​​the functional surface 3 can be tilted downwards. The paths of the guide rails of the rail system 4 shown in the figures are of course only examples; the functional surface 3 can just as easily be relocated forward, for example, above the driver's cab.

[0041] The movement of the functional surface 3 in the guide rails of the rail system 4 can be motor-driven in a somewhat more complex variant. A schematic solution for such a drive is shown in the Fig. 12 and Fig. 13. Here, the guide rails are designed as a C-profile with internal toothing. A drive rod is provided on the underside of the functional surface 3 or integrated into the functional surface 3, which is set in rotation by a motor. At the end of the drive rod are pinions 11, which extend into the C-profile of the guide rails and mesh with the toothing. This is shown schematically in Fig. 12 reproduced.

[0042] Fig. 13 shows the area of ​​functional surface 3. This functional surface 3 has individual segments that are connected to one another. In the front area, the drive is provided below the first individual segment. A motor 9, via an intermediate gear, causes a drive rod running from one side to the opposite side of the camper 1 to rotate, and can thus move the first segment of functional surface 3 back and forth. The other segments of functional surface 3 are connected to the first segment, so that they move with the movement of the first segment, i.e. the first segment pushes the other segments in front of it or drags them behind it, depending on the direction in which the first segment is moved.

[0043] Fig. Figure 14 shows a part of an alternative rail system 4 that can be used in conjunction with the present invention. This is a part of the first section 4' of the previously described rail system 4. In this embodiment, this first section is not a fixed, rigid rail, but is formed by a rail composed of several individual segments. In the left-hand part, this is initially the Fig. 3 known curved area. The horizontally extending part of the first guide rail 4' consists of two foldable segments, one of which is hinged to the curved front part and the other to each other.

[0044] Thanks to the segmentation and articulated connection, this first section 4' of the guide rail can now be folded toward the curved front section after the functional surface 3 has been moved into the stowed position. This takes up less space or is less visually disruptive, which is particularly practical when this first section 4' of the guide rail rests on a piece of furniture after unfolding or is positioned freely in the room. Fig. 14 the individual stages of unfolding the first section 4' are shown one below the other.

[0045] Fig. Figure 15 shows a section of the interior 2 of a camper 1 with a different design of the first section 4' of the guide rail. Here, the individual Fig. 14 segments are designed to be plugged together and are connected by hinges. This can be achieved using standard plug-in connections, which allow the holding devices to move within the guide rail, even across the connections. Such a guide rail can be dismantled when not in use, i.e. when the functional surface 3 has been moved into the stowed position. This plug-in first section 4' of the guide rail is placed here on built-in furniture in the form of a low row of cupboards or sideboards, whereby a protective intermediate layer or rubber bearings should be provided to protect against damage. This structure can be removed from a storage room, plugged together, and placed in place when converting the interior space 2, previously used as a lounge or living space, into a bedroom. Instead of a plug-in solution, telescopic rods or similar solutions can of course also be used.

[0046] The number of segments shown is the same both in the case of the design according to Fig. 14 as well as in the case of the design according to Fig. 15 is intended as an example only; other pitches can also be used. Furthermore, other options for storing parts or sections of the guide rails in a space-saving manner can, of course, also be used.

[0047] The guide rails can be mounted on top or freely arranged in the space; alternatively, the term "guide rail" should also be understood to mean a guide in a groove or on a projection in a wall 10 of the camper. The only essential thing is that the holding means of the functional surface are guided and movable within the rail system. This will preferably be a tongue and groove connection, but other longitudinal guides can also be used. List of reference symbols: 1 camper 2 Interior 3 functional area 4 rail system 4' First section of the guide rail 4'' Second section of the guide rail 4''' Third section of the guide rail 5 Usable space 6 table 7 cable pull 8 lifting equipment 9 Engine 10 Wall of the camper 11 pinions 12 flap

Claims

[1] Flexible built-in furniture for a room, in particular for the interior (2) of a camper (1), a caravan, small one-room houses, cabins in shipping and aviation or other small living spaces, with a functional surface (3) which is movably mounted in a guide by means of bearing means and can be moved back and forth manually or by motor from a position of use to another position, in particular to an inactive storage position, wherein the guide has a rail system (4) with at least two opposite guide rails which are fastened in the room as intended and are arranged on opposite sides of the functional surface (3), characterized bythat the guide rails comprise a first section (4') and a second section (4''), wherein in the use position the functional surface (3) is held in the first section (4') via the bearing means and when the functional surface (3) is moved from the use position into the further position the bearing means are held in sections of the guide rails outside the first section (4') and the guide rails outside the first section (4') are designed such that the functional surface (3) is displaced into a horizontal or vertical plane which is different from the plane of the use position. [2] Flexible built-in furniture according to claim 1, characterized by that the second section (4'') of the guide rails runs parallel to the first section (4') of the guide rails, wherein the first section (4') and the second section (4'') of the guide rails are connected to one another via a connecting section. [3] Flexible built-in furniture according to the preceding claim, characterized by that the connecting section is bent by 180° and the second section (4'') and the first section (4') of the guide rails lie in two mutually parallel, horizontal planes, wherein the second section (4'') of the guide rails is designed such that the functional surface (3) can be arranged in the further position above or below the position of use or offset therefrom in the horizontal direction. [4] Flexible built-in furniture according to one of the preceding claims, characterized by that the guide rails comprise a third section (4'''), wherein the functional surface (3) can be selectively displaced from the use position into a further position in which its bearing means are held in the guide rails of the second section (4'') or in the guide rails of the third section (4'''). [5] Flexible built-in furniture according to the preceding claim, characterized by that the third section (4''') is designed such that the functional surface (3) is held in a further position which lies in a plane which is arranged at an angle to the plane of the use position, in particular in a vertical plane. [6] Flexible built-in furniture according to one of the preceding claims, characterized by that the rail system (4) has at least a first section (4'), a second section (4'') and a third section (4''') as well as an active or passive switch, via which the functional surface (3) can be displaced from one of the sections (4', 4'' or 4''') to one of the other sections (4', 4'' or 4''') by electric motor, hydraulically, pneumatically or manually. [7] Flexible built-in furniture according to the preceding claim, characterized bythat the rail system (4) is designed such that the switch connects the first section (4'), the second section (4'') and the third section (4''') to one another, wherein the rail system (4) is designed such that the functional surface (3) can be transferred from the use position in which the bearing means are held in the first section (4') into a further position in which the bearing means are held in the second section (4'') and subsequently into a third position in which the bearing means are held in the third section (4'''). [8] Flexible built-in furniture according to the preceding claim, characterized bythat the switch is automatically switched by pushing all bearing means into the second section (4''), so that when the second section (4'') is reached, the switch switches over via the functional surface (3) coming from the use position in the first section (4') and, when the functional surface (3) moves in the opposite direction, guides the functional surface (3) into the third section (4''') and, when the second section (4'') is reached, the switch switches over again via the functional surface (3) coming from the third section (4''') and, when the functional surface (3) then moves in the opposite direction, guides the functional surface (3) into the first section (4'). [9] Flexible built-in furniture according to one of the preceding claims, characterized bythat the rail system (4) has a front, first pair of opposing rails enclosing the functional surface (3) between them and a rear, second pair of opposing rails enclosing the functional surface (3) between them, wherein the front pair and the rear pair of rails each have rail sections with the first section (4') and the second section (4'') and, if present, the third section (4'''). [10] Flexible built-in furniture according to one of the preceding claims, characterized by that the functional surface (3) is formed by two or preferably several partial surfaces which are preferably connected to one another in an articulated manner to form a common functional surface (3). [11] Flexible built-in furniture according to the preceding claim, characterized by that at least two, preferably each of the partial surfaces are movably mounted in the rail system (4) via bearing means. [12] Flexible built-in furniture according to one of the preceding claims, characterized by that the functional surface (3) is a bed or table. [13] Interior (2) of a camper (1) or a caravan, a cabin in shipping or aviation or a house with a flexible built-in piece of furniture according to one of the preceding claims. [14] Interior (2) according to the preceding claim, characterized bythat the rail system (4) has guide rails which are arranged on a wall of the interior (2) at least with a part that supports one of the sides of the functional surface (3), wherein on each side of the functional surface (3) guide rails are arranged on opposite walls of the interior (2) or at least on one side of the functional surface (3) a guide rail is arranged on supports or on other built-in furniture at a distance from the wall of the interior (2) and wherein this guide rail arranged at a distance from the wall is preferably designed to be foldable or to be plugged together and dismantled. [15] Interior (2) according to one of the two preceding claims, characterized bythat the interior space (2) has an upper floor with a cavity arranged underneath, wherein the first section (4') of the rail system (4) is above the upper floor and a further section (4'' or 4''') of the rail system (4) is at least partially designed and arranged below the upper floor in such a way that the functional surface (3) is movable into a stowage position which lies below the upper floor in the cavity.

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