Mobile living structure for motor vehicles or trailers

Abstract

The invention relates to a mobile living structure (1) for a motor vehicle or a trailer (23), wherein the living structure (1) defines a living space (2) and the living structure (1) has a basic module (3) and an extension module (4) coupled to the basic module (3), wherein the extension module (4) can be moved from a retracted position to an extended position in order to extend the living space (2). The mobile housing structure is characterized in that the side walls (5, 6) of the base module (3) aligned parallel to the displacement direction (V) of the extension module (4) and the side walls (10, 11) of the extension module (4) aligned parallel to the displacement direction (V) of the extension module (4) are each coupled to a pivotable wall element (15), wherein the wall elements (15) of the adjacent side walls (5, 10, 6, 11) of the base module (3) and the extension module (4) are each operatively connected in such a way thatthat the wall elements (15) are in a lowered position in the retracted position of the extension module (4) and in an erected position in the extended position of the extension module (4), wherein a flexible outer wall (22) is slidably connected at its end to a side wall (7) of the base module (3) oriented transversely to the direction of displacement (V) of the extension module (4) and to a side wall (12) of the extension module (4) oriented transversely to the direction of displacement (V) of the extension module (4), and forms the roof of the living space (1), wherein the flexible outer wall (22) is operatively connected to the wall elements (15) and rests in sections on the wall elements (15), at least in the erected position of the wall elements (15). The invention further relates to a motor vehicle or a trailer (23) with a living space (1) according to the invention.

Description

The present invention relates to a mobile residential structure for motor vehicles or trailers with the features in the preamble of claim 1.Mobile structures for motor vehicles or trailers are known in the art. Since motor vehicles and trailers are limited with regard to their length and in particular width due to the applicable road traffic regulation, the residential structures installed on the motor vehicles or trailers, which enclose a residential area, often have expansion modules. Corresponding expansion modules can be coupled to a basic module of the residential structure and, in a stationary state of the motor vehicle or trailer, can be displaced from a retracted position into an extended position in order to expand the residential space. Thus, the living space and thus the comfort of the users can be increased.A corresponding residential structure with displaceable extension modules is known, for example, from DE 10 2015 225 269 B4. The expansion modules allow the living space of the residential structure to be enlarged transversely to the motor vehicle longitudinal direction. However, it is not possible to simultaneously increase the living space in the vertical direction, and consequently to increase the distance between the floor and the roof of the residential structure.Furthermore, recreational vehicles with room expansion systems are known from DE 12 32 838 A, EP 3 747 696 A1 and DE 29 41 091 A1.Proceeding from the prior art, the object of the present invention is to show an improved mobile residential structure, the residential space of which can be enlarged in particular by the displacement of an expansion module both in the vertical direction and in the horizontal direction. Furthermore, the object of the invention is to provide a motor vehicle or a trailer with a corresponding residential structure.The first object is achieved by a mobile residential structure for a motor vehicle or a trailer according to claim 1. The second object is achieved by a motor vehicle or a trailer according to claim 15.Advantageous embodiments of the invention are the subject of the dependent claims.The mobile residential structure according to the invention for a motor vehicle or a trailer delimits a residential space and has a base module and an extension module coupled to the base module. The extension module is displaceable from a retracted position into an extended position for extension of the living space. The displacement of the expansion module takes place in a substantially horizontal displacement direction.The basic module of the residential structure has three side walls and a base plate connected to the side walls. The opposing side walls are oriented parallel to the displacement direction of the extension module and are connected by the third side wall, wherein the third side wall is oriented orthogonally to the opposing side walls. The extension module also has three side walls and a base plate connected to the side walls. The opposing side walls of the extension module are also oriented parallel to the displacement direction of the extension module and are connected by the third side wall, wherein the third side wall is oriented orthogonally to the opposing side walls.The base module and the extension module are aligned with each other such that the respective third side walls are arranged opposite each other. In combination, the base module and the extension module thus delimit the floor and the side walls of the living space.It is now essential to the invention that the side walls of the base module oriented parallel to the displacement direction of the extension module and the side walls of the extension module oriented parallel to the displacement direction of the extension module are each coupled to a pivotable wall element. In total, at least four wall elements are thus provided. The wall elements of the adjacent side walls of the base module and of the extension module, and therefore of the side walls of the base module and of the extension module, which are arranged on the same side of the residential structure, are each operatively connected. In the retracted position of the expansion module, the wall elements are in a lowered position and a major part of their surface does not extend beyond the surface of the side wall coupled to the wall element. Consequently, the living space in the retracted position of the expansion module is not increased, or is increased only insignificantly, by the wall elements. If the extension module is displaced from the retracted position into the extended position, the distance between the pivotable wall elements increases in the displacement direction. This has the consequence that the wall elements are transferred into an upright position by the interaction formed between them. In the erected position, the residential structure is increased in height by the wall elements.It is also essential to the invention that a flexible outer wall is connected on the end side displaceably to the side wall of the basic module oriented transversely to the displacement direction of the expansion module and to the side wall of the expansion module oriented transversely to the displacement direction. The outer wall is in particular flexible in the displacement direction, and is therefore flexible. The flexible outer wall thus connects the third side walls of the base module and of the extension module, which third side walls are oriented transversely to the displacement direction, and forms the roof of the residential structure. The flexible outer wall is operatively associated with the wall members. In the retracted position of the expansion module or in the lowered position of the wall elements, the outer wall rests in sections on the wall elements or the upper edges of the side walls of the base module and / or of the expansion module. If the extension module is displaced into the extended position, the wall elements pivot into their extended position and also guide the outer wall into height. This is made possible by the flexibility of the outer wall and by the displaceable coupling between the outer wall and the third side walls of the basic module and of the expansion module. In the erected position of the wall elements, the outer wall thus rests in sections on the latter.The combination according to the invention of the pivotable wall elements and the flexible outer wall thus enables an extension of the living space in height, and therefore in the vertical direction. It is essential that this residential area expansion takes place automatically by the displacement of the expansion module. No additional extension operation is required. Thus, the living space of the residential structure can be enlarged by the displacement of the expansion module both in the vertical direction and in the horizontal direction.The wall elements are preferably quarter-circular. Particularly preferably, the radius of the respective quarter-circular wall element corresponds approximately to the width and / or height of the side wall coupled to the wall element. This enables a maximum increase in the living space in the vertical direction without the width or length of the living structure being increased in the retracted position of the expansion module or in the lowered position of the wall elements. In the lowered position, the quarter-circular wall elements are arranged in particular such that one leg of the respective wall element is positioned in the region of the upper edge and one leg is positioned in the region of the side edge, facing away from the third side wall, of the side wall coupled to the wall element. In the extended position of the extension module or in the erected position of the quarter-circular wall elements, the adjacent wall elements of the base module and of the extension module preferably form a semicircle, wherein the flexible outer wall rests on the outer contour of the wall elements. The distance between the floor and the roof of the residential structure formed by the flexible outer wall thus increases from the third side walls of the basic module and the extension module towards the center of the residential structure.Preferably, the wall elements are each coupled at a coupling point to the side walls of the base module and of the extension module, which side walls are oriented parallel to the displacement direction of the extension module. The wall elements are pivotably connected to the respective side wall via the coupling points.In particular, the coupling point is arranged in the region of the right-angled corners of the quarter-circular wall elements. It is also advantageous if the coupling point is arranged in each case in the region of the upper corners of the side walls coupled to the wall elements. In the lowered position of the wall elements, it is thus ensured that the wall elements do not project beyond the outer contour of the side walls with the major part of their surface. At the same time, the wall elements in the erected state almost completely protrude beyond the side walls, so that a maximum living space extension is possible.In an advantageous embodiment variant of the invention, the operative connection between the adjacent side walls of the basic module and of the expansion module is formed in that the wall elements are each pivotably connected to one another at a coupling point. In the lowered position of the wall elements, the wall elements of the adjacent side walls of the basic module and of the extension module are preferably arranged one behind the other but mirrored with respect to a vertical mirror axis. The coupling point is preferably arranged in each case in the upper central region of the adjacent wall elements. If the extension module is displaced from the retracted position into the extended position, the distance between the coupling points between wall element and side wall is reduced. The coupling point between the wall elements ensures during the displacement of the expansion module that the wall elements are pivoted upwards and are transferred from the lowered state into the raised state.Alternatively, the wall elements of the adjacent side walls of the base module and of the extension module can each be coupled to one another by means of a connecting rod. This makes it possible to arrange the adjacent wall elements with a horizontal offset with respect to one another. In the erected position of the wall elements, in this case an opening is formed between the wall elements in the region of the connecting rod. The opening between the wall elements can be closed by a cover plate. The cover plate can be connected to the outer wall by a joint, so that the cover plate can be folded in front of the opening in the erected position of the wall elements.Preferably, the wall elements do not project beyond the outer contour of the side wall coupled to the respective wall element, in particular laterally. This has the advantage that the width or length of the residential structure is not increased in the retracted position of the expansion module or in the lowered position of the wall elements.The flexible outer wall has in particular a honeycomb structure and is particularly preferably formed from a plastic. This enables an optimum compromise between the lowest possible weight and the highest possible load capacity. When the honeycomb structure is loaded, the force is distributed to the many walls of the honeycombs. Thus, the structure remains very stable, although it is formed from a small amount of material. In addition, the honeycomb structure ensures good thermal and acoustic insulation.Preferably, the flexible outer wall is formed from separate wall units, wherein the wall units are connected to one another on their outer side oriented away from the residential structure. The separate wall units extend in their longitudinal direction transversely to the displacement direction of the expansion module. This allows bending of the outer wall, so that it can adapt to the outer contour specified by the wall elements. The separate wall units can be formed by recesses in the outer wall.In this case, the recesses are made only so deep that a connecting section remains between the formed wall units.Preferably, the flexible outer wall and the side walls of the base module and of the extension module, which side walls are oriented transversely to the displacement direction of the extension module, each have guide elements for the displaceable coupling. In particular, the corresponding side walls have two dovetail slides which are mounted displaceably in corresponding dovetail guides. The dovetail guides preferably extend parallel to one another and transversely to the longitudinal direction of the wall units over the entire outer wall. This enables the displacement of the flexible outer wall during the transfer of the wall elements from the lowered into the raised position.Preferably, the wall elements are also guided in the dovetail guides, so that the flexible outer wall adapts to the outer contour of the wall elements.Alternatively, the flexible outer wall can also have two additional recesses running parallel, wherein the wall elements are guided in the recesses in the extended position of the extension module. Also in the retracted position of the expansion module, the wall elements can already be arranged in the recesses. The recesses also run parallel to the displacement direction of the expansion module and ensure that the flexible outer wall adapts to the outer contour of the wall elements.Preferably, in the retracted position of the expansion module, the flexible outer wall completely covers the side wall of the base module and of the expansion module oriented transversely to the displacement direction of the expansion module. This has the advantage, on the one hand, that the residential structure is protected during transport by the outer wall from dirt and other weather influences. Secondly, complete covering allows a sufficient length of the flexible outer wall, so that in the extended position of the extension module it does not become detached from the side walls connected to it.The base module, the extension module and / or the flexible outer wall can be produced using a 3D printing method. This has the advantage that the residential structure can be produced cost-effectively and enables great freedom in the design of the respective components.The invention furthermore comprises a motor vehicle or a trailer having a residential structure according to the invention. The residential structure is arranged in particular on a chassis of the motor vehicle or of the trailer.The residential structure is preferably oriented on the motor vehicle or trailer such that the extension module can be extended transversely to the longitudinal axis of the motor vehicle or trailer.The invention is described in more detail below with reference to exemplary embodiments illustrated in the drawings. The following are shown: FIGS. 1 a) to c) show the functional principle of a residential structure according to the invention in a rear view, FIGS. 2 a) to c) show a first embodiment of a trailer with a residential structure according to the invention in a retracted position of the extension module, FIGS. 3 a) to c) show the first embodiment of the trailer with a residential structure according to the invention in an intermediate position of the extension module, FIGS. 4 a) to c) show the first embodiment of the trailer with a residential structure according to the invention in an extended position of the extension module, FIGS. 5 a) to c) show a second embodiment of the trailer with a residential structure according to the invention in a rear view, and FIGS. 6 a) to c) show a flexible outer wall according to the invention in a side view, a detailed view and a perspective.FIGS. 1 to 6 are technically schematic and should not be understood to scale. The same reference numerals are used for identical or functionally corresponding components or component components, even if a repeated description is omitted for reasons of simplification.FIG. 1 shows the functional principle of a mobile residential structure 1 for a motor vehicle or a trailer. The residential structure 1 delimits a residential space 2 and has a basic module 3 and an expansion module 4 coupled to the basic module 3. For expanding the living space 2, the expansion module 4 can be displaced from a retracted position into an extended position, wherein the displacement takes place in a horizontal displacement direction V.FIG. 1 a) shows the mobile residential structure 1 in the retracted position of the extension module 4, FIG. 1 b) shows the mobile residential structure 1 during the displacement of the extension module 4, and FIG. 1 c) shows the mobile residential structure 1 in the extended position of the extension module 4.The base module 3 has three side walls 5, 6, 7 and a base plate 8 connected to the side walls 5, 6, 7. The first side wall 5 and the second side wall 6 are arranged on opposite sides of the base plate 8 and parallel to the displacement direction V. The third side wall 7 is arranged on the side of the base plates 8 facing away from the expansion module 4 and orthogonally to the first side wall 5 and second side wall 6. The third side wall 7 connects the first side wall 5 and the second side wall 6.The expansion module 4 likewise has three side walls 10, 11, 12 and a base plate 13. The first side wall 10 and the second side wall 11 are arranged on opposite sides of the bottom plate 13 and parallel to the displacement direction V. The third side wall 12 is arranged on the side of the base plate 13 facing away from the base module 3 and orthogonally to the first side wall 10 and second side wall 11. The third side wall 12 connects the first side wall 10 and the second side wall 11.The base plate 13 of the expansion module 4 is arranged displaceably above the base plate 9 of the base module 3. The side walls 5, 6, 7 of the basic module 3 and the side walls 10, 11, 12 of the extension module 4 thus define the width B and the length of the residential structure 1, not shown in FIG. 1.In the retracted position of the expansion module 4 shown in FIG. 1 a), the expansion module 4 is arranged almost completely within the outer contour of the basic module 3. During the transport of the mobile residential structure 1, the smallest possible width B of the residential structure 1 is thus ensured.The side walls 5, 6 of the basic module 3 oriented parallel to the displacement direction V of the expansion module 4 and the side walls 10, 11 of the expansion module 4 oriented parallel to the displacement direction V of the expansion module 4 are each coupled to a pivotable wall element 15. The wall elements 15 are of quarter-circle configuration and are each coupled at a coupling point 16 to the first side walls 5, 10 and second side walls 6, 11 of the basic module 3 and of the expansion module 4. The four-part circular wall elements 15 have a radius R which corresponds to the width BS and height HS of the side walls 5, 6, 10, 11 coupled to them.In the retracted position of the expansion module 4 shown in FIG. 1 a), the wall elements 15 coupled to the side walls 5, 6 of the base module 3 are arranged such that a first leg 17 of the respective wall element 15 is positioned in the region of the upper edge 18 and a second leg 19 is positioned in the region of the side edge 20 of the side wall 5, 6 coupled to the wall element 15 facing away from the third side wall 7.The wall elements 15 of the adjacent side walls 5, 6, 10, 11 of the basic module 3 and of the expansion module 4, that is to say the wall elements 15 of the adjacent side walls 5 and 10 and also 6 and 11, are each operatively connected and are coupled to one another at a coupling point 21.Due to the displacement of the expansion module 4 shown in FIG. 1 b), the distance A between the adjacent coupling points 16 is reduced. The coupling point 21 ensures that the wall elements 15 are pivoted into the height during the displacement of the extension module 4 from their lowered position upwards in the image direction, and thus away from the base plates 8, 9, 13.FIG. 1 c) shows the mobile residential structure 1 in the extended position of the extension module 4. wall elements 15 are pivoted into their final set-up position and form a semicircle over the wide B of the residential structure 1.The mobile residential structure 1 further comprises a flexible outer wall 22, not shown in more detail in FIG. 1, which forms the roof of the residential structure 1. In the extended position of the extension module 4 shown in FIG. 1 c), the flexible outer wall 22 rests on the outer edges of the wall elements 15 arranged to form a semicircle. By moving the expansion module 4, the living space 2 is thus enlarged not only in the horizontal direction but also in the vertical direction, and therefore in height. A larger living space 2 offers more comfort for the users of the residential structure 1.FIG. 2 shows a first variant embodiment of a trailer 23, which has a mobile residential structure 1 according to the invention, in the retracted position of the expansion module 4. The residential structure 1 is arranged on the trailer 23 such that the displacement direction V of the extension module 4 is oriented transversely to the longitudinal axis LA of the trailer 23.FIG. 2 a) shows the trailer 23 in a rear view. The basic structure of the basic module 3, expansion module 4 and wall elements 15 corresponds to the structure shown in FIG. 1. In FIG. 2 a) the flexible outer wall 22 is illustrated. The outer wall 22 is connected on the end side displaceably to the side wall 7 of the basic module 3 oriented transversely to the displacement direction V of the expansion module 4 and to the side wall 12 of the expansion module 4 oriented transversely to the displacement direction V of the expansion module 4 and forms the roof of the residential structure 1. In the retracted position of the expansion module 4, the outer wall 22 rests on the upper legs 17 of the quarter-circular wall elements 15.FIG. 2 b) shows the trailer 23 in a side view and FIG. 2 c) in a perspective view. The figures show that, in the retracted position of the expansion module 4, the flexible outer wall 22 covers the side walls 7, 13 of the basic module 3 and of the expansion module 4 which are oriented transversely with respect to the displacement direction V. This protects the residential structure 1 from weathering influences and damage during transport.FIG. 3 shows the first variant embodiment of the trailer 23 in an intermediate position between the retracted and extended positions of the extension module 4.In FIG. 3 a), which shows the trailer 23 in a rear view, it can be seen that the wall elements 15 are pivoted from the lowered position towards the raised position during the displacement process of the extension module 4. This in turn has the result that the flexible outer wall 22 together with the wall elements 15 is displaced upwards into the height in the image direction. The outer wall 22 rests in sections on the wall elements 15, so that the wall elements 15 and the outer wall 22 are operatively connected.The displacement of the outer wall 22 is made possible by the displaceable coupling of the outer wall 22 to the side walls 7, 12 of the basic module 3 and of the expansion module 4 oriented orthogonally to the displacement direction V. This coupling can be seen in FIG. 3 b), which shows the trailer 23 in a side view. On the side walls 7, 12 of the residential structure 1, dovetail slides 32 running parallel to one another on the outside are arranged. The flexible outer wall 22 is slidably coupled to the dovetail slides 32 and may be vertically displaced upward or downward.FIG. 3 c) shows the trailer 23 in a perspective. FIG. 3 c) once again illustrates that the flexible outer wall 22 extends from the third side wall 7 of the basic module 3 to the third side wall 12 of the expansion module 4 and thus forms the roof of the residential structure 1. In this case, the flexible outer wall 22 is supported and guided by the wall elements 15.FIG. 4 shows the first variant embodiment of the trailer 23 in the extended position of the expansion module 4. in FIG. 4 a) the trailer 23 is shown in a rear view. The wall elements 15 in the erected position form a semicircle on the rear and front sides of the residential structure 1. The living space 2 is thus enlarged in its width B and also vertically in its height H in the extended position of the extension module 4. Overall, the living space 2 can be raised by more than 200% compared to the retracted or lowered position by the configuration according to the invention of the living structure 1 in the extended position of the extension module 4 and the erected position of the wall elements 15.In the extended position of the expansion module 4, the flexible outer wall 22 rests with more than 90% of its length, in particular completely, on the outer contour of the semicircles formed by the wall elements 15. This can also be seen in the side view shown in FIG. 4 b) and in the perspective of the trailer 23 shown in FIG. 4 c).FIG. 5 shows a second variant embodiment of a trailer 23 with a residential structure 1 according to the invention. FIG. 5 a) shows the trailer 23 in a rear view. In contrast to the first variant embodiment shown in FIGS. 2 to 4, the base module 3 has a greater width BG than the extension module 4. the width BG of the base module 3 is also greater than the radius R of the wall elements 15. The extension module 4 and the wall elements 15 do not have to be adapted in their dimensions.The coupling points 16 between the side walls 5, 6 of the base body 3 and the wall elements 15 are arranged in such a way that the quarter-circular wall elements 15 abut with their curvature on the side wall 7 of the base body 3 arranged orthogonally to the displacement direction V. It is thus ensured that the flexible outer wall 22 is guided by the curvatures of the wall elements 15 during the transition between the retracted position and the extended position of the extension module 4. In particular, no offset thus arises during the transition between the third side wall 7 of the base body 3 and the rounded portion of the wall elements 15.FIG. 5 c) shows the trailer 23 of the second embodiment variant in the extended position of the expansion module 4. In this embodiment variant, the adjacent wall elements 15 do not form an ideal semicircle in the extended position of the expansion module 4. Between the adjacent wall elements 15, an opening 25 is formed due to the greater width BG of the basic module 3. This can be closed by a cover plate, not shown in detail. The cover plate can be connected to the outer wall 22 by a joint, so that the cover plate can be folded in front of the opening 25 in the erected position of the wall elements 15.FIGS. 5 b) and c) further show that the adjacent wall elements 15, in contrast to the first embodiment variant, are not operatively connected to one another by a coupling point 21, but rather are connected to one another by means of a connecting rod 26. The connecting rod 26 basically performs the same function as the coupling point 21 of the first embodiment variant, but at the same time allows the opening 25 to be formed between the wall elements 15.FIG. 6 a) shows a section of the flexible outer wall 22 in the region of the transition between the third side wall 7 of the basic module 3, which is oriented transversely to the displacement direction V, not shown here, and a wall element 15. FIG. 6 b) shows the detail section AA of FIG. 6 a). The flexible outer wall 22 has a honeycomb structure 27 and is formed of a plastic. This enables an optimum compromise between the lowest possible weight and the highest possible load capacity. When the honeycomb structure 27 is loaded, the force is distributed to the many walls of the honeycombs. Thus, the structure remains very stable, although it is formed from a small amount of material. In addition, the honeycomb structure 27 ensures good thermal and acoustic insulation.The flexible outer wall 22 is formed from separate wall units 28, wherein the wall units 28 are connected to one another on their side 29 oriented away from the residential structure 1. The width BA of the recesses 30 formed between the wall units 28 preferably increases in the direction of the residential structure 1. the separate wall units 28 extend in their longitudinal direction transversely to the displacement direction V of the expansion module 4. the recesses 30 enable the outer wall 22 to be bent, so that it can adapt to the outer contour of the wall elements 15.FIG. 6 c) shows the detail of FIG. 6 a) in a perspective view. The flexible outer wall 22 includes a dovetail guide 31 slidably connected to the dovetail slide 32. In each case, two dovetail slides 32 are connected to the side wall 7 of the base module 3 oriented transversely to the displacement direction V of the expansion module 4 and to the side wall 12 of the expansion module 4. This enables the displacement of the flexible outer wall 22 during the transfer of the wall elements 15 from the lowered into the raised position.The flexible outer wall 22 has two dovetail guides 31 running in parallel. As shown in FIG. 6 c), the dovetail guides 31 also guide the wall elements 15, and the dovetail guides 31 extend parallel to the displacement direction V of the expansion module 4 and, in addition to the displaceable connection to the side walls 7, 12 of the residential structure, ensure that the flexible outer wall 22 fits to the outer contour of the wall elements 15.Reference Number:1 Mobile residential structure 2 Residential space 3 Basic module 4 Extension module 5 Side wall 6 Side wall 7 Side wall 8 Base plate 10 Side wall 11 Side wall 12 Side wall 13 Base plate 15 Wall element 16 Coupling point 17 First leg 18 Upper edge 19 Second leg 20 Side edge 21 Coupling point 22 Flexible outer wall 23 Trailer 24 Chassis 25 Opening 26 Connecting rod 27 Honeycomb structure 28 Wall unit 29 Side of 28 30 Recess 31 Dovetail guide 32 Dovetail slide A Distance between 16 B Width of 1 BG Width of 3 BS Width of 5, 6, 10, 11 BA Width of 30 B Width of 1 B Width of 1 LA Longitudinal axis of 23 H Height of 1 HS Height of 5, 6, 10, 11 V Displacement direction R Radius of 15

Claims

Mobile residential structure (1) for a motor vehicle or a trailer (23), wherein the residential structure (1) delimits a residential area (2) and the residential structure (1) has a basic module (3) and an extension module (4) coupled to the basic module (3), wherein the extension module (4) can be displaced from a retracted position into an extended position for the extension of the residential area (2), characterized in that the side walls (5, 6) of the basic module (3) aligned parallel to the displacement direction (V) of the extension module (4) and the side walls (10, 11) of the extension module (4) aligned parallel to the displacement direction (V) of the extension module (4) are each coupled to a pivotable wall element (15), wherein the wall elements (15) of the adjacent side walls (5, 10, 6, 6, 11) of the base module (3) and of the extension module (4) are each operatively connected such that the wall elements (15) are in a lowered position in the retracted position of the extension module (4) and are in an erected position in the extended position of the extension module (4), wherein a flexible outer wall (22) is connected at the end to a side wall (7) of the base module (3) oriented transversely to the displacement direction (V) of the extension module (4) and to a side wall (12) of the extension module (4) oriented transversely to the displacement direction (V) of the extension module (4) in a displaceable manner and forms the roof of the residential structure (1), wherein the flexible outer wall (22) is operatively connected to the wall elements (15) and rests in sections on the wall elements (15) at least in the erected position of the wall elements (15).Mobile residential structure (1) according to claim 1, characterised in that the wall elements (15) are quarter-circular.Mobile residential structure (1) according to claim 1 or 2, characterised in that the wall elements (15) are each coupled at a coupling point (16) to the side walls (5, 6, 10, 11) of the basic module (3) and of the extension module (4) oriented parallel to the displacement direction (V) of the extension module (4).Mobile residential structure (1) according to claim 3, characterised in that the coupling points (16) are located in the area of the right-angled corners of the quarter-circular wall elements (15).Mobile residential structure (1) according to one of claims 1 to 4, characterised in that the wall elements (15) of the adjacent side walls (5, 10, 6, 11) of the basic module (3) and of the extension module (4) are each coupled to one another at a coupling point (21).Mobile residential structure (1) according to one of claims 1 to 4, characterised in that the wall elements (15) of the adjacent side walls (5, 10, 6, 11) of the basic module (3) and of the extension module (4) are each coupled to one another by means of a connecting rod (26).Mobile residential structure (1) according to one of claims 1 to 6, characterised in that the wall elements (15) in their lowered position do not laterally project beyond the outer contour of the side wall (5, 6, 10, 11) coupled to the respective wall element (15).Mobile residential structure (1) according to one of claims 1 to 7, characterised in that the wall elements (15), in their erected position, enlarge the residential space (2) in the vertical direction.Mobile residential structure (1) according to one of claims 1 to 8, characterised in that the flexible outer wall (22) has a honeycomb structure (27).Mobile residential structure (1) according to one of claims 1 to 9, characterised in that the flexible outer wall (22) is formed from separate wall units (28), wherein the wall units (28) are connected to one another on their side (29) oriented away from the residential structure (1).Mobile residential structure (1) according to one of claims 1 to 10, characterised in that the flexible outer wall (22) has a dovetail guide (31) for displaceable coupling with the side wall (7, 12) of the base module (3) and the extension module (4) oriented transversely to the displacement direction (V) of the extension module (4).Mobile residential structure (1) according to one of claims 1 to 11, characterised in that the flexible outer wall (22) has two recesses running parallel, wherein the wall elements (15) are guided in the recesses in the extended position of the extension module (4).Mobile residential structure (1) according to one of claims 1 to 12, characterised in that the flexible outer wall (22) completely covers the side wall (7, 12) of the basic module (3) and of the extension module (4) oriented transversely to the displacement direction (V) of the extension module (4) in the retracted position of the extension module (4).Mobile residential structure (1) according to one of claims 1 to 13, characterised in that the base module (3), the extension module (4) and / or the flexible outer wall (22) are produced using a 3D printing method.Motor vehicle or trailer (23) having a residential structure (1) according to one of Claims 1 to 14.Motor vehicle or trailer (23) according to Claim 15, characterized in that the expansion module (4) can be extended transversely with respect to the longitudinal axis (LA) of the motor vehicle or trailer (23).

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