Recreational vehicle, chassis and chassis unit

Abstract

The invention relates to a chassis unit (3) for a chassis (2) of a recreational vehicle (1), in particular a motorhome or a caravan. According to the invention, a self-supporting structure (4) is provided, having at least one baseplate (5) and at least one transverse plate (6, 7, 8), the at least one baseplate (5) is arranged at least substantially horizontally on the recreational vehicle (1) in the assembled state, the at least one transverse plate (6, 7, 8) extends at least substantially transverse to a longitudinal direction (9) of the recreational vehicle (1) in the assembled state, and the at least one transverse plate (6, 7, 8) is at least indirectly connected to the at least one baseplate (5). The invention also relates to a chassis (2) and a recreational vehicle (1).

Description

[0001] Description

[0002] Recreational vehicle, chassis and chassis unit

[0003] The invention relates to a recreational vehicle, in particular a mobile home or a caravan, a chassis and a chassis unit.

[0004] DE 20 2020 106 581 U1 discloses a motorhome with a chassis supporting floor structure. The chassis supporting floor structure of the known motorhome has sections with machining holes. A cross member can be connected to such sections using mechanical fasteners. The cross member can be made of a metal or a metal alloy, with steel or aluminum being used. The cross member can be designed as a solid body or as a hollow profile.

[0005] The chassis support floor structure known from DE 202020 106 581 U1 has the disadvantage that it results in a costly and / or heavy chassis design due to the required material usage. This may also require additional cross members in the structure to achieve the necessary stiffening.

[0006] The object of the invention is to provide a chassis unit, a chassis, and a recreational vehicle that enable improved design and functionality. Specifically, the object of the invention is to provide a chassis unit, a chassis, and a recreational vehicle that enable a more cost-effective and lightweight design.

[0007] The object is achieved by a chassis unit having the features of patent claim 1, a chassis having the features of patent claim 9, and a recreational vehicle having the features of patent claim 10. Advantageous developments of the invention are specified in the subclaims.

[0008] The object is achieved by a chassis unit for a chassis of a recreational vehicle, in particular a mobile home or a caravan, wherein a self-supporting structure is provided which has at least one base plate and at least one transverse plate, wherein the at least one base plate is arranged at least substantially horizontally on the recreational vehicle in the assembled state, wherein the at least one transverse plate extends at least substantially transversely to a longitudinal direction of the recreational vehicle in the assembled state and wherein the at least one transverse plate is at least indirectly connected to the at least one base plate.

[0009] Furthermore, the object is achieved by a chassis for a recreational vehicle, in particular a mobile home or caravan, having at least one such chassis unit. Furthermore, the object is achieved by a recreational vehicle, in particular a mobile home or caravan, having a chassis that has at least one such chassis unit.

[0010] It is advantageous that at least one transverse plate is arranged at least substantially vertically on the recreational vehicle in the assembled state and / or that at least one transverse plate extends at least substantially across the width of the base plate as viewed transversely to the longitudinal direction. This enables advantageous stiffening.

[0011] It is advantageous for the self-supporting structure to have a plurality of transverse plates that are offset from one another along the longitudinal direction such that the distance between a transverse plate located at the frontmost point on the self-supporting structure and a transverse plate located at the rearmost point on the self-supporting structure is not less than half the length of the self-supporting structure, viewed in the longitudinal direction. This further improves the stiffening of the self-supporting structure. Furthermore, a trough-shaped receptacle can be provided between two transverse plates, which can be used to accommodate a built-in component.

[0012] It is advantageous that the self-supporting structure comprises a first side plate and at least one second side plate, between which the at least one transverse plate is arranged, and that at least one transverse plate is connected at least indirectly to the first side plate on the one hand and at least indirectly to the second side plate on the other. Preferably, all transverse plates are each connected at one hand to the first side plate and at the other hand to the second side plate. This allows for particularly advantageous stiffening.

[0013] It is advantageous that at least one side plate, when mounted, is arranged at least substantially vertically on the recreational vehicle and / or that at least one side plate extends at least substantially over the length of the base plate as viewed in the longitudinal direction. This allows for advantageous attachment of a cross plate to the ends of the base plate, both to the first side plate and to the second side plate, viewed in the longitudinal direction. This allows for optimized stiffening. Furthermore, the space available for mounting components can be optimally utilized.

[0014] It is advantageous that the at least one base plate is designed as the floor plate of the self-supporting structure, and that at least one base plate, at least one transverse plate, the first side plate, and the second side plate are arranged in an at least partially trough-shaped configuration when assembled. This advantageously allows for the creation of a receptacle for internal components. Furthermore, the design of the base plate enables good aerodynamics.

[0015] It is advantageous that at least the at least one base plate, the first side plate and the second side plate form a foldable component and / or that the foldable component has at least one insert and / or at least one point reinforcement made of a material different from the at least one material of the foldable component and / or at least one planar reinforcement made of a material different from the at least one material of the foldable component and / or that the foldable component is designed as a milled part. This reduces the number of separate individual parts, thus simplifying assembly. Furthermore, fastenings between the parts of the self-supporting structure can be implemented more easily or can sometimes be eliminated entirely.

[0016] It is advantageous that at least one fastening for a belt anchorage is provided and / or that the self-supporting structure has at least one through-opening for laying cables and / or that a base plate of the self-supporting structure has a smooth underside and / or that the self-supporting structure is made of at least one weather-resistant and / or insulating material and / or of at least one sandwich material and / or that the self-supporting structure is designed such that a length of the self-supporting structure viewed in the longitudinal direction is greater than a width of the self-supporting structure viewed transversely to the longitudinal direction, and / or that the self-supporting structure is designed such that a width of the self-supporting structure viewed transversely to the longitudinal direction is greater than a height of the self-supporting structure, and / or the self-supporting structure is designed such thatthat at least one receptacle is formed for at least one built-in component, in particular at least one tank and / or at least one heater and / or at least one battery. This allows for particularly advantageous configurations. These can be implemented individually or in any combination.

[0017] This allows for the creation of a self-supporting structure that can be used as a precursor in the manufacture of a chassis. This enables pre-assembly, thus simplifying the assembly of the chassis or recreational vehicle. The self-supporting structure is preferably inherently stable, so that it can also support other fittings or components of the recreational vehicle, in particular a chassis. Furthermore, the self-supporting structure, in conjunction with the floor above it, in particular the running floor, can form an insulated intermediate floor with storage or installation space. This can also improve thermal insulation.

[0018] Advantageously, the chassis unit can be designed as a pre-assembled module. The self-supporting structure can be formed at least substantially from lightweight composite materials. When assembled, the chassis unit can stiffen the chassis frame of the recreational vehicle. The chassis unit can replace conventional cross members or crossbeams.

[0019] The self-supporting structure can form a module that is designed according to one or more of the following points: It can be inherently flexurally and torsionally rigid. It preferably offers the possibility of pre-assembly. It can be at least partially folded. It is preferably predominantly glued. It is preferably lighter than is the case with conventional lead frame concepts. It preferably consists of a few individual parts. It can have considerable rigidity and dimensional stability even when designed with at least two open surfaces. One or more insulated internal regions can be realized. It advantageously comprises at least one transverse wall. It is preferably a structural part. It can have at least one fastening for a belt anchorage. It can have many penetrations for at least one cable routing.It may have a smooth underbody, which has a positive effect on aerodynamics. It is preferably weather-resistant. It is preferably considerably larger in length than in width. It is preferably considerably larger in width than in height. It is preferably adaptable to various vehicle dimensions. It is preferably made primarily of sandwich materials. It can accommodate additional components such as tanks, heating, batteries, and the like.

[0020] A preferably folded component can contain inserts. It can contain point or surface reinforcements (patches) made of a different material. It preferably represents the main dimensions. It can be designed as a milled part, thus eliminating the need for tool modifications.

[0021] Depending on the design, shorter process times in production, decentralized pre-assembly, standardization, increased strength, a reduction in the number of components and / or component variance can be realized.

[0022] Further advantages and details of the invention are explained in more detail with reference to the exemplary embodiments illustrated in the schematic figures. Herein:

[0023] Fig. 1 shows a recreational vehicle with a chassis having a chassis unit, in an excerpted, schematic, spatial representation according to an embodiment and

[0024] Fig. 2 shows the chassis unit shown in Fig. 1 in a schematic, spatial representation according to the exemplary embodiment, wherein a view is shown obliquely from above. Fig. 1 shows a recreational vehicle 1 with a chassis 2, which has a chassis unit 3, in an excerpted, schematic, spatial representation according to an exemplary embodiment. The recreational vehicle 1 can be designed in particular as a mobile home or caravan. The chassis 2 and the chassis unit 3 are particularly suitable for such a recreational vehicle 1. The chassis 2 generally has at least one chassis unit 3, wherein only one chassis unit 3 is provided in this exemplary embodiment.

[0025] The recreational vehicle 1 of the exemplary embodiment is also described with reference to the chassis unit 3 shown in Fig. 2. Fig. 2 shows the chassis unit 3 shown in Fig. 1 in a schematic, spatial representation according to the exemplary embodiment, showing a view obliquely from above.

[0026] The chassis unit 3 comprises a self-supporting structure 4, which in this exemplary embodiment has a base plate 5 and transverse plates 6, 7, 8. In the assembled state, the base plate 5 is arranged at least substantially horizontally on the recreational vehicle 1. Furthermore, the transverse plates 6, 7, 8 extend at least substantially transversely to a longitudinal direction 9 of the recreational vehicle 1 in the assembled state. The longitudinal direction 9 corresponds to the usual direction of travel of the recreational vehicle 1 when traveling straight ahead.

[0027] The transverse plates 6, 7, 8 are each connected to the base plate 5. Indirect fastening can be achieved using suitable fastening means. Fasteners that can be used include, in particular, screws or the like, as well as adhesives. When mounted on the recreational vehicle 1, the transverse plates 6, 7, 8 are each arranged at least substantially vertically. The transverse plates 6, 7, 8 each extend at least approximately across the width 15 of the base plate 5, viewed transversely to the longitudinal direction 9. This enables a high level of stability of the self-supporting structure 4.

[0028] In this exemplary embodiment, the self-supporting structure 4 has a plurality of transverse plates 6, 7, 8, which are arranged offset from one another along the longitudinal direction 9 such that they are arranged in pairs at a distance from one another. This distance or these distances add up such that a distance 16 between a transverse plate 8 located furthest forward on the self-supporting structure 4 in the longitudinal direction 9 and a transverse plate 6 located furthest rearward on the self-supporting structure 4 in the longitudinal direction 9 is not less than half the length 16 of the self-supporting structure 4 viewed in the longitudinal direction 9, as illustrated in Fig. 2. Half the length 16 of the self-supporting structure 4 is half the (total) length 16 of the structure 4, which in this exemplary embodiment is given by a length 16' of the base plate 5.

[0029] The self-supporting structure 4 has a first side plate 21 and at least one second side plate 22. The transverse plates 6, 7, 8 are arranged between the side plates 21, 22, wherein the transverse plates 6, 7, 8 preferably extend at least substantially from the first side plate 21 to the second side plate 22. The transverse plates 6, 7, 8 are connected on the one hand to the first side plate 21 and on the other hand to the second side plate 22. This further improves the stability of the self-supporting structure. Screws or the like, as well as adhesives, can be used as fastening means between the transverse plates 6, 7, 8 and the side plates 21, 22. The transverse plates 6, 7, 8 can also be inserted into recesses 23, 24, 25, in particular milled recesses, of the side plates 21, 22, as is illustrated in Fig. 2 by way of example in recesses 23, 24, 25 of the first side plate 21.This allows high strength of the connections and optimized stiffening of the self-supporting structure 4 to be achieved.

[0030] In the assembled state, the side plates 21, 22 are each arranged vertically on the recreational vehicle 1. The side plates 21, 22 extend over the (total) length 16 of the self-supporting structure 4. Along the longitudinal direction 9, the length 16' of the side plates 21, 22 corresponds at least approximately to the length 16' of the base plate 5. The base plate 5 serves as the floor plate 5 of the self-supporting structure 4. As a result, trough-shaped arrangements 25, 26, 27 are realized by the base plate 5, the transverse plates 6, 7, 8, the first side plate 21 and the second side plate 22. The arrangements 25, 26, 27 of the self-supporting structure 4 form receptacles 25', 26', 27' for installed components, such as a tank, in particular a water tank, a heater and a battery. This allows the self-supporting structure 4 to simultaneously function as a storage floor. Furthermore, the chassis unit 3 can also be designed as a chassis tray 3.In a preferred embodiment, the base plate 5, the first side plate 21, and the second side plate 22 form a foldable component 28. This further simplifies manufacturing and assembly costs. The foldable component 28 can have inserts, point reinforcements, and planar reinforcements, which can be made of a different material than the material of the foldable component 28. Furthermore, the foldable component 28 can be formed as a milled part, further simplifying manufacturing.

[0031] Figs. 1 and 2 show an example of a fastening 29 for a belt anchorage of the chassis unit 3, wherein the fastening 29 is connected to the self-supporting structure 4. Furthermore, the self-supporting structure has through-openings 30, 31 for routing cables. Furthermore, the base plate 5 of the self-supporting structure 4 has a smooth underside 32, which is particularly advantageous for aerodynamics. Suitable recesses can be provided here, for example. For example, recesses 35, 36 are provided for the fastening 29.

[0032] Further such recesses 37, 38, 39, 40 can serve for a correspondingly adapted fastening 29 and for a further fastening for a belt anchorage. In this exemplary embodiment, the recesses 35 to 40 are formed on the transverse plates 6, 7, 8. Recesses 41, 42 can allow access to the receptacles 25', 26'. This can, for example, enable operation of built-in components, connection of electrical or hydraulic supply lines to built-in components, installation or removal of built-in components, or the like. In this exemplary embodiment, the recesses 41, 42 are provided on the second side plate 22.

[0033] The self-supporting structure 4 is made of a weather-resistant material. A sandwich material is preferably used here, allowing for high durability with low weight. In this exemplary embodiment, the length 16 of the self-supporting structure 4 viewed in the longitudinal direction 9 is greater than its width 15 viewed transversely to the longitudinal direction 9. Furthermore, in this exemplary embodiment, its width 15 viewed transversely to the longitudinal direction 9 is greater than its height 17. The chassis unit 3 with the self-supporting structure 4 and preferably a plurality of fastenings 29 is mounted in this exemplary embodiment beneath a plate 50 designed as a running floor 50. If necessary, a rear axle assembly 51, in particular a rear axle 51, can also be attached to the self-supporting structure 4. Additional cross members can be omitted here, since the required stability can already be ensured by the chassis unit 3.

[0034] The invention is not limited to the described embodiments.

Claims

Patent claims 1. Chassis unit (3) for a chassis (2) of a recreational vehicle (1), in particular a mobile home or a caravan, characterized in that a self-supporting structure (4) is provided which has at least one base plate (5) and at least one transverse plate (6, 7, 8), that the at least one base plate (5) is arranged at least substantially horizontally on the recreational vehicle (1) in the assembled state, that the at least one transverse plate (6, 7, 8) extends at least substantially transversely to a longitudinal direction (9) of the recreational vehicle (1) in the assembled state, and that the at least one transverse plate (6, 7, 8) is at least indirectly connected to the at least one base plate (5).

2. Chassis unit according to claim 1, characterized in that at least one transverse plate (6, 7, 8) is arranged at least substantially vertically on the recreational vehicle (1) in the assembled state and / or that at least one transverse plate (6, 7, 8) extends at least substantially over the width (15) of the base plate (5) viewed transversely to the longitudinal direction (9).

3. Chassis unit according to claim 1 or 2, characterized in that the self-supporting structure (4) has a plurality of transverse plates (6, 7, 8) which are arranged offset from one another along the longitudinal direction (9) in such a way that a distance (16) between a transverse plate (8) located furthest forward on the self-supporting structure (4) in the longitudinal direction (9) and a transverse plate (6) located furthest rearward on the self-supporting structure (4) in the longitudinal direction (9) is not less than half the length (16) of the self-supporting structure (4) viewed in the longitudinal direction (9).

4. Chassis unit according to one of claims 1 to 3, characterized in that the self-supporting structure (4) comprises a first side plate (21) and at least a second side plate (22), between which the at least one transverse plate (6, 7, 8) is arranged, and in that at least one transverse plate (6, 7, 8) is connected, on the one hand, at least indirectly to the first side plate (21) and, on the other hand, at least indirectly to the second side plate (22). Chassis unit according to claim 4, characterized in that at least one side plate (21, 22) is arranged at least substantially vertically on the recreational vehicle (1) in the assembled state and / or in that at least one side plate (21, 22) extends over at least substantially the length (16') of the base plate (5) viewed along the longitudinal direction (9).Chassis unit according to claim 4 or 5, characterized in that the at least one base plate (5) is designed as a floor plate (5) of the self-supporting structure (4) and that at least one base plate (5), at least one transverse plate (6, 7, 8), the first side plate (21) and the second side plate (22) are arranged in at least one at least partially trough-shaped arrangement (25, 26, 27) in the assembled state.Chassis unit according to one of claims 4 to 6, characterized in that at least the at least one base plate (5), the first side plate (21) and the second side plate (22) form a foldable component (28) and / or that the foldable component (28) has at least one insert and / or at least one point reinforcement made of a material different from the at least one material of the foldable component (28) and / or at least one planar reinforcement made of a material different from the at least one material of the foldable component (28) and / or that the foldable component (28) is designed as a milled part. Chassis unit according to one of claims 1 to 7, characterized in that. that at least one fastening (29) is provided for a belt anchorage and / or that the self-supporting structure has at least one through-opening (30, 31) for laying cables and / or that a base plate (5) of the self-supporting structure (4) has a smooth underside (32) and / or that the self-supporting structure (4) is made of at least one weather-resistant material and / or of at least one sandwich material and / or that the self-supporting structure (4) is designed such that a length (16) of the self-supporting structure (4) viewed in the longitudinal direction (9) is greater than a width (15) of the self-supporting structure (4) viewed transversely to the longitudinal direction (9), and / or that the self-supporting structure (4) is designed such that a width (15) of the self-supporting structure (4) viewed transversely to the longitudinal direction (9) is greater than a height (17) of the self-supporting structure (4),and / or the self-supporting structure (4) is designed such that at least one receptacle (25', 26', 27') is formed for at least one built-in component, in particular at least one tank and / or at least one heater and / or at least one battery. Chassis (2) for a recreational vehicle (1), in particular for a mobile home or caravan, comprising at least one chassis unit (3) according to one of claims 1 to 8. A recreational vehicle (1), in particular a mobile home or caravan, comprising a chassis (2) having at least one chassis unit (3) according to one of claims 1 to 8.

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