Lattice structure, vehicle with such a structure, and methods for manufacturing the same

Abstract

Among other things, a grid structure (3; 3a, 3b, 3c), in particular a radiator or decorative grid structure (3; 3a, 3b, 3c) for a vehicle (1), is proposed, comprising a surrounding frame (4) which defines a space (5) in which a grid panel (6) is formed. Advantageously, the grid panel (6) is supported and fastened to the frame (4) under preload.

Description

[0001] The invention relates to a grid structure, in particular a radiator or decorative grid structure for a vehicle, according to the preamble of claim 1 of the invention. According to claim 10 of the invention, it further relates to a vehicle with such a grid structure. According to claim 11 of the invention, it further relates to a method for manufacturing said grid structure.

[0002] Especially in high-performance vehicles, large radiators are necessary, which in turn result in large cooling air surfaces. These cooling air surfaces are formed by openings in the vehicle's body and are usually protected by grille structures, or radiator or decorative grilles, from the ingress of objects such as stones or pebbles into these openings and from damage to downstream vehicle structures and / or components. Current technical solutions for these grille structures result in relatively high costs and weight, as they must provide sufficient impact protection while maintaining adequate airflow and also be aesthetically pleasing. Thus, even small-diameter, so-called lightweight decorative grilles, which tend to vibrate and rattle due to their low rigidity, are known to be prone to other noises and disturbances.To counteract the aforementioned rattling and / or other disturbing noises, it is known to increase the relevant material cross-section, which, however, leads or would lead to a reduction in the free flow cross-section in a comparable installation space and consequently to a reduction in cooling performance as well as to increased costs and increased weight.

[0003] Furthermore, DE 10 2012 013 699 A1 discloses a radiator grille for a motor vehicle, which has a surrounding frame made of, for example, plastic. A ring element for an emblem is arranged in the aforementioned space. This ring element is connected to the frame via vertical and horizontal struts, thereby stiffening or additionally stiffening the frame. A number of decorative grilles are also attached to the frame, occupying the space defined by the frame and interconnected with one another.

[0004] According to a first aspect of the invention, it is an object of the invention to provide an alternative grille structure, in particular a radiator or decorative grille structure for a vehicle, compared to the prior art. This structure is cost-effective, lightweight, and provides sufficient impact protection and an adequate flow cross-section while avoiding disturbing noises, especially rattling noises. According to a second aspect of the invention, it is an object of the invention to provide a vehicle with such a grille structure. According to a third aspect of the invention, it is an object of the invention to provide methods for manufacturing said grille structure.

[0005] Starting from a grid structure, in particular a radiator or decorative grid structure for a vehicle, with a surrounding frame which limits a free space in which a grid field is formed, the task is solved by supporting and fastening the grid field to the frame under prestress.

[0006] Such a lattice structure has the advantage of exhibiting high stability and stiffness, as well as high shape retention, due to its inherent tension. This makes it possible to design the lattice field and its components with a minimized material cross-section, resulting in cost and weight advantages and a sufficiently large flow cross-section.

[0007] The dependent claims describe preferred further developments or embodiments of the invention.

[0008] According to a first preferred embodiment of the invention, the grid is formed by or comprises both flexible and / or non-stable bar elements, wherein the flexible bar elements are subjected to either tension or compression, and the non-stable bar elements are subjected exclusively to tension, and are supported and clamped at both ends in the frame. A flexible bar element is understood to be a bar element that can be elastically deformed along its longitudinal extent under compressive stress. Such a bar element is easy and inexpensive to manufacture or is available on the market as a solid or hollow bar profile, which can optionally be cut to length for the specific application. A non-stable bar element is understood to be a wire or a cable. That is, tension bars can also be replaced by tension cables or tension wires.Preferably, the rod elements are made of a material with high stiffness and strength.

[0009] In order to achieve particularly high stability or stiffness as well as particularly high shape retention of the grid structure, it is provided that two or more bar elements are clamped in the frame in a crossing manner.

[0010] In order to adapt or optimize the grid structure with regard to, for example, certain force flows within the body of a vehicle, it is provided that at least one first bar element is provided which is clamped in the frame under compression, and at least one second bar element is provided which is clamped in the frame under tension, crossing the first bar element and supporting itself on it.

[0011] For example, to minimize repair costs in the event of a crash with minor damage to the grid, the bar elements are detachably mounted and clamped in the frame. Alternatively, the bar elements can also be permanently mounted and clamped in the frame, resulting in an even stiffer grid structure.

[0012] According to a second preferred embodiment of the invention, the grid is formed by at least one wire or cable element, or comprises at least one wire or cable element which is subjected to tensile stress, deflected multiple times within the frame, and clamped. This advantageously minimizes the number of components and, consequently, the effort required to manufacture the grid structure. A grid structure combining at least one rod element of the type described above with at least one such wire or cable element is, of course, also covered by the invention.

[0013] In the event of an object impacting the grid structure, such as a rockfall, there is a risk of the object being thrown back in an unpredictable manner (elastic collision of two bodies with unequal masses). To counteract this adverse effect of recoil, it is preferably provided that the rod elements and / or the at least one wire or cable element are clamped and supported at least at one end within the frame by means of a damping element. This damping element absorbs the impact energy of the object striking the grid, thus preventing it from being thrown back or reducing the force of the impact significantly.

[0014] Alternatively, the rod elements and / or at least one wire or cable element can be clamped and supported in the frame up to its plastic deformation limit, and / or clamped and supported at least at one end in the frame by means of a deformation element. In both cases, impact energy is absorbed by plastic deformation of either the rod element and / or wire or cable element in question, or by plastic deformation of the deformation element, with the result that the aforementioned effect of the object being thrown back is prevented, or at least significantly minimized.

[0015] As further provided by the invention, adjacent and / or intersecting rod elements can be at least partially separated from one another and / or held at defined distances by means of at least one spacer and / or fixing device. This measure, on the one hand, reinforces the grid structure. On the other hand, it enables a multitude of design enhancements, which can be influenced in particular by the choice of material used, the shape, and the number of spacers and / or fixing devices.

[0016] The invention also relates to a vehicle with a lattice structure of the type described above.

[0017] The process for producing a lattice structure of the type described above is characterized in particular by the following steps: a) Provision of a one-, two- or multi-part frame which defines a free space in which a grid field can be arranged, b) Provision of rod elements and / or at least one wire or rope element, c) Fitting the one-, two- or multi-part frame with the rod elements and / or at least one wire or cable element for tensioning the same within the frame in such a way, c1) that the one-, two- or multi-part frame is elastically deformed, the rod elements and / or the at least one wire or cable element are positioned and fixed in receptacles of the frame at both ends after being deflected several times, and finally the elastic deformation of the frame is relieved, whereby the rod elements are subjected to tension or compression and / or the at least one wire or cable element is subjected to tension and is braced in the frame, or c2) that at both ends the rod elements and / or the at least one wire or cable element are positioned and fixed in receptacles of the two- or multi-part frame after being deflected multiple times, whereby the parts of the frame are adjusted relative to each other and, after reaching a certain tensile or compressive stress in the rod elements and / or a certain tensile stress in the at least one wire or cable element, the said parts of the frame are fixed in this position relative to each other, or c3) that at both ends the rod elements and / or the at least one wire or cable element are deflected multiple times under the application of a certain preload to them and are positioned and fixed to the same frame, or c4) that at both ends the rod elements and / or the at least one wire or cable element are deflected several times, each time by means of at least one tensioning element provided at one end, and are positioned in receptacles of the one-, two- or multi-part frame and finally are clamped and fixed in the frame by actuating the at least one tensioning element, or c5) that at both ends the rod elements and / or the at least one wire or rope element are deflected several times under pretension, positioned in receptacles of the one-, two- or multi-part frame and finally connected to the frame in a material-bonded manner and fixed to it.

[0018] The invention is explained in more detail below with reference to the exemplary embodiments schematically depicted in the drawings. However, it is not limited to these, but encompasses all embodiments defined by the claims. The drawings show: Fig. 1 extremely schematically a vehicle with a plurality of body openings, each of which is protected from the ingress of objects by a grid structure, Fig. 2 a grid structure designed according to the invention in a first embodiment of the invention, Fig. 3 the detail “ Z " after Fig. 2, Fig. 4 a lattice structure designed according to the invention in a second embodiment of the invention, Fig. 5 the detail “ Y " after Fig. 4, Fig. 6 a lattice structure designed according to the invention in a third embodiment of the invention, Fig. Figures 7a-d show a highly schematic representation of rod elements for forming a lattice structure according to the invention. Fig. 8 a highly schematic representation of a wire or rope element for forming a lattice structure according to the invention, Fig. 9 an enlarged representation of a wire or rope element according to Fig. 8, Fig. 10 extremely schematically a first embodiment of a fastening element for fastening a rod element or a wire or rope element to a frame of the grid structure, Fig. 11 extremely schematically a second embodiment of a fastening element for fastening a rod element or a wire or rope element to a frame of the grid structure, and Fig. Figures 12a-d show a highly schematic further development of the lattice structure according to the invention in four exemplary embodiments.

[0019] Fig. 1 shows a vehicle in this respect 1, in the present case in the form of a high-performance motor vehicle or sports car, which has several body openings 2 features each of which has a lattice structure 3 They are protected from the penetration of objects such as stones or pebbles. These grid structures... 3 They can be used, for example, as cooling or decorative grille structures.

[0020] According to Fig. 2 and Fig. 3 exhibits said lattice structure 3a a surrounding frame 4 on, which provides a free space 5 limited. The framework 4 It is designed to be relatively rigid or resistant to deformation. Furthermore, the frame can 4 It may be designed in one, two, or more parts. Within the aforementioned free space. 5 is a grid field 6 arranged and under tension on the frame 4supported and fastened. According to this first embodiment, a planar grid structure is used. 3a with a planar grid 6 provided for, which is provided for by a plurality of first and second bar elements 7a , 7b is formed or a plurality of first and second bar elements 7a , 7b exhibits features that are at an angle to or intersecting with said grid field 6 under tension within the framework 4 are strapped in.

[0021] As already explained above, according to this invention a distinction is made between contour-soft and contour-unstable rod elements. 7a , 7b distinguished, whereby a contour-soft rod element 7a , 7b a rod element 7a , 7b is understood as a structure that can be elastically deformed by bending along its longitudinal extension as a result of compressive stress, and is considered a contour-unstable rod element. 7a , 7ba wire or a rope is understood. The contour-soft rod elements 7a , 7b They can each be subjected to tension or compression, and the contour-instabilizing rod elements 7a , 7b each exclusively subjected to tensile stress within the framework 4 be stored and clamped.

[0022] According to the exemplary embodiment Fig. 2 and Fig. 3. These are contour-flexible bar elements subjected to tensile stress. 7a , 7b However, dimensionally unstable bar elements subjected to tensile stress can also be used here. 7a , 7b to be applied. The following is merely an example of a grid field. 6 shown, whose rod elements 7a perpendicular to the bar elements 7b are arranged. An angle deviating from a right angle is naturally also covered by the invention.

[0023] The Fig. 4 and Fig. In contrast, 5 show a simply curved lattice structure. 3b , which are also characterized by a plurality of contour-soft first and second rod elements 7a , 7b is formed or a plurality of contour-soft first and second rod elements 7a , 7b exhibits features that are at an angle to or intersecting with said grid field 6 as part of 4 are clamped in place. The following is merely an example of a grid field. 6 shown, whose rod elements 7a perpendicular to the bar elements 7b are arranged. The curvature of the lattice structure 3b , i.e., the frame 4 including the grid area 6 , is essentially due to the relatively rigid or deformation-resistant frame 4 specified.

[0024] According to this second embodiment, the lattice structure is oriented in the direction of an axis of curvature. 3b or of the grid field 6oriented first bar elements 7a The second bar elements are, so to speak, subjected to tension as a frame. These are oriented at an angle, in this case at a right angle to the aforementioned axis of curvature. 7b are also subjected to tensile stress, so to speak, on the first rod elements 7a respectively, stretched across the frame, thereby allowing the second rod elements to be formed 7b on the first rod elements 7a to support themselves or conform to them and thus follow the curvature. That is, the second rod elements 7b They are supported from the radial outside by the first rod elements 7a ab. Due to the fact that the first and second bar elements are located here 7a , 7b where tensile stresses can of course also be used for contour-unstable rod elements 7a , 7b to be used.

[0025] The invention naturally also includes an arrangement of the first and second rod elements.7a , 7b to each other, in which the second rod elements 7b are subjected to pressure and thus adhere to the first rod elements 7a conform to the curve and follow its shape (not shown in the drawing). That is, in this case, the second bar elements are... 7b for contour-soft rod elements 7b , which extend radially inwards from the first rod elements 7a support.

[0026] Fig. Figure 6 shows a three-dimensional (3D) curved lattice structure 3c , whereby the curvature is not limited by the frame 4 , but through first and / or second rod elements 7a , 7b , which are oriented at an angle, in this case at right angles to each other, is specified. Fig. Figure 6 shows only a first and a second rod element for the sake of clarity. 7a , 7b Specifically, the first bar elements generate 7aThe frame exhibits curvature due to prestress caused by compressive stress. Therefore, these are contour-flexible first beam elements. 7a , 7b . The angle, in this case at a right angle to the first rod elements 7a oriented second bar elements 7b In contrast, they are subjected to tensile stress and, so to speak, to the first rod elements 7a respectively, stretched across the frame, thereby allowing the second rod elements to be formed 7b on the first rod elements 7a to support themselves or conform to them and thus follow the curvature. That is, the second rod elements 7b They are supported from the radial outside by the first rod elements 7a ab. Therefore, this could involve both contour-flexible and contour-unstable second rod elements. 7b act.

[0027] Alternatively, an arrangement can be provided in which both the first and second rod elements 7a , 7bare under pressure and the second rod elements 7b from radially inwards to the first, curved rod elements 7a conform to the shape and follow the curve (not shown in the drawing). In this case, only contour-flexible rod elements are suitable. 7a , 7b usable.

[0028] What the framework 4 As regards, this is preferably made of metal, for example titanium or aluminum, a plastic, a composite material, in particular a fiber-reinforced plastic, such as a carbon or glass fiber reinforced plastic, or of any combination of these materials. The rod elements 7a , 7bare also preferably made of metal, for example titanium or aluminum, a plastic, a composite material, in particular a fiber-reinforced plastic, such as a carbon or glass fiber reinforced plastic, or of any combination of these materials.

[0029] The Fig. 7a and Fig. 7b shows exemplary contour-soft bar elements. 7a , 7b with different profile cross-sections with regard to specific stress and / or design requirements. For example, the one in Fig. 7a left-hand arranged rod element 7a , 7b an elliptical solid cross-section, the centrally arranged rod element 7a , 7b a circular solid cross-section and the rod element arranged on the right 7a , 7b a circular ring cross-section. Fig. In contrast, 7 shows bar elements 7a , 7b, which are formed by closed hollow profiles, which also have stiffening webs oriented in the longitudinal direction of the same 8 exhibit.

[0030] The rod elements 7a , 7b can be solvable or unsolvable within the framework 4 They must be stored and clamped. For this purpose, both ends are held in place by the same fixtures. 9 stored in the frame. Fig. Figure 7c shows exemplary bar elements 7a , 7b , which has a thread at least at one end, preferably at both ends 10 exhibit the respective thread 10 preferably corresponds to one in said recording 9 axially fixed, but rotatably mounted clamping element 11 The clamping element 11 can be formed, for example, by a blind rivet nut that is known in itself (cf. Fig. 10) By twisting said clamping element 11, in this case the blind rivet nut, in one direction or the other around the longitudinal axis of the rod element in question 7a , 7b can do the same within the framework 4 become tense.

[0031] Fig. In contrast, 7d shows rod elements 7a , 7b , each end having a support and / or positive locking device 12 , according to this embodiment, in the form of a ball head. Fig. 11 are such formed rod elements 7a , 7b stressed within the framework 4 Installed or clamped. In contrast, the ball head or similar can also have an undercut and thus be positively engaged with the frame. 4 be / become connected so that the relevant rod element 7a , 7b is capable of withstanding tensile stress (not shown in the drawing).

[0032] The production of the lattice structure 3a , 3b , 3cThis can be done in a variety of ways. For example, it may be planned that the frame is constructed first. 4 The rod elements are elastically deformed. 7a , 7b both ends in said recordings 9 of the frame 4 be positioned and fixed, and finally the elastic deformation of the frame 4 is cancelled, which depends on the direction of the elastic deformation of the frame. 4 and the alignment of the bar elements 7a , 7b as part of 4 the rod elements 7a , 7b a tensile or compressive load and therefore tension within the frame 4 learn which may be associated with a curvature of the relevant rod element 7a , 7b which is associated with it. Depending on the load to be expected on the respective bar element. 7a , 7b It must be decided whether the bar element in question 7a , 7ba contour-unstable rod element 7a , 7b It can be or a contour-soft rod element 7a , 7b must be.

[0033] Alternatively, it can be provided that the rod elements 7a , 7b Both ends in recordings 9 a two- or multi-part frame 4 , whose frame parts (not shown in the drawing) are adjustable relative to each other, can be positioned and fixed. By adjusting the frame parts relative to each other, the orientation of the rod elements can be adjusted. 7a , 7b as part of 4 on at least part of the bar elements 7a , 7b a tensile or compressive load is exerted, resulting in tension within the frame 4 This results from reaching the desired tensile or compressive stress in the respective bar element. 7a , 7bThe frame components are fixed in relation to each other, possibly accompanied by a curvature of the same. Here too, the specific requirements depend on the load to be expected on the respective beam element. 7a , 7b to decide whether the bar element in question 7a , 7b a contour-unstable rod element 7a , 7b It can be or a contour-soft rod element 7a , 7b must be.

[0034] Alternatively, it can be provided that the rod elements 7a , 7b for example by manually applying a certain preload to them and, if necessary, by forming a curvature of them at both ends in recordings 9 of the frame 4 positioned and thus on the frame 4 They must be fixed in place. These must be contour-flexible rod elements. 7a , 7b .

[0035] Alternatively, it can be provided that the rod elements7a , 7b each by means of at least one clamping element provided at one end 11 in recordings 9 of the frame 4 be positioned and finally by actuation, for example by twisting at least one clamping element 11 , such as a blind rivet nut mentioned above, within the frame 4 The bar element is tensioned and fixed. The tensioning can apply either tensile or compressive stress to the respective bar element. 7a , 7b This effect depends on the load exerted on the respective bar element. 7a , 7b It must be decided whether the bar element in question 7a , 7b a contour-unstable rod element 7a , 7b It can be or a contour-soft rod element 7a , 7b must be.

[0036] Alternatively, it can be provided that the rod elements 7a , 7bunder tension in recordings 9 of the frame 4 positioned and finally bonded to the frame by gluing or potting with a plastic. 4 connected and thus fixed to the same.

[0037] The exemplary embodiments described above represent, among other things, within the framework of 4 Tensionable or tensioned contour-flexible rod elements 7a , 7b from those formed by solid or hollow rod-shaped profiles. In contrast, dimensionally unstable rod elements subjected to tensile stress in the installed state. 7a , 7b Provided in the form of ropes or wires, these may already be woven into a functional or stylistic pattern and then attached to the frame, for example with the help of a keder. 4 to be stretched (not shown graphically).

[0038] Furthermore, the invention provides a lattice structure 3a ,3b , 3c captured, whose grid field 6 at least partially through at least one that is deflected multiple times and in recordings 9 of the frame 4 positioned and under tension, and therefore within the framework 4 tensioned wire or rope element 13 is formed (cf. Fig. 8 and Fig. 9) Tensioning at least one wire or rope element 13 For example, in the above-described, the bar elements can be 7a , 7b in the relevant manner. For example, it may be provided that the wire or rope element 13 one end axially fixed in a holder 9 of the frame 4 and on the other hand, by means of a clamping element 11 , for example a blind rivet nut which is connected to a threaded end section of the wire or rope element 13 corresponds in another recording 9the frame is fixed. The blind rivet nut is axially fixed but rotatable in the receptacle. 9 stored. By turning the blind rivet nut, the wire or rope element can be secured. 13 claimed on the train and thus within the framework 4 or be tensioned with the same (not shown in the drawing).

[0039] As already explained above, the conventional procedure in the event of a rockfall or similar event into the grid field is... 6 the lattice structure 3a , 3b , 3c The danger of said object being thrown back unpredictably (elastic collision of two bodies with unequal masses). To counteract this adverse circumstance of being thrown back, it is preferably provided that the rod elements 7a , 7b and / or at least one wire or rope element 13 at least at one end by means of a damping element not shown in the drawing within the frame 4It is clamped and supported. This damping element absorbs the impact energy of the object on the grid field. 6 impacting object, preventing it from being thrown back or reducing the force significantly. An elastomer, for example, can be used as a damping element.

[0040] Alternatively, it can be provided that the rod elements 7a , 7b and / or at least one wire or rope element 13 up to the plastic deformation limit of the same within the framework 4 clamped and supported and / or at least at one end by means of a deformation element not shown in the drawing within the frame 4 They are clamped and supported. In both cases, impact energy is dissipated by plastic deformation of either the respective rod element. 7a , 7b and / or at least one wire or rope element 13or absorbed by plastic deformation of the deformation element, with the result that the said effect of the object being thrown back is prevented, or at least significantly minimized.

[0041] Furthermore, it may be provided that adjacent and / or intersecting bar elements 7a , 7b by means of at least one spacing and / or fixing device 14 are at least partially separated from each other and / or kept at a defined distance (see [reference]). Fig. 12a to Fig. 12d). This measure achieves, firstly, a strengthening of the grid structure. Secondly, it enables a multitude of design enhancements, particularly through the choice of material used, the shape design, and the number of spacers and / or fixing elements. 14 are susceptible to influence.

[0042] Fig. 12a shows intersecting bar elements.7a , 7b , which are located at the intersection point by means of such a spacing and / or fixing device 14 are fixed at a specific distance from each other. The spacing and / or fixing device 14 It features two guide bushings that are firmly connected to each other. 15 on, each of which consists of a bar element 7a , 7b are interspersed. Their axes are arranged orthogonally to each other for illustrative purposes only. This is preferably an attachment into which the respective rod elements are inserted. 7a , 7b are threaded.

[0043] Fig. In contrast, 12b shows a spacer and / or fixing device. 14 , which is materially bonded to intersecting rod elements 7a , 7b connected, for example, by plastic injection molding.

[0044] Fig. Figure 12c shows a spacer and / or fixation device 14, which is attached to the spacer and / or fixing device 14 after Fig. 12a is based on this, where one of the guide bushings 15 through a half-shell 16 is replaced, in which the rod element 12b It is held in place solely by a form-fit connection and by tensioning it.

[0045] Fig. 12d finally shows spacers and / or fixing devices 14 , which are guided by guide rings 17 are formed. Each a guide ring. 17 is formed by two adjacent rod elements that do not intersect, at least in this area 7a , 7b permeated in such a way that adjacent bar elements 7a , 7b They are partially deflected towards each other. This also creates a lattice structure. 3 , 3d trainable. Reference symbol list 1 vehicle 2 Body opening 3 Lattice structure 3a Lattice structure 3b Lattice structure 3c Lattice structure 3D lattice structure 4 frames 5 Free space 6 grid square 7a first rod element 7b second rod element 8 stiffening bridge 9th entry 10 threads 11 clamping element 12 Support and / or form-fitting devices 13 Wire or rope element 14 Spacers and / or fixing devices 15 Guide bushing 16 half-shells 17 Guide ring QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 102012013699 A1

[0003]

Claims

[1] Grid structure (3; 3a, 3b, 3c), in particular radiator or decorative grid structure (3; 3a, 3b, 3c) for a vehicle (1), with a surrounding frame (4) which defines a free space (5) in which a grid field (6) is formed, characterized by , that the grid (6) is supported and fastened to the frame (4) under preload. [2] Lattice structure (3; 3a, 3b, 3c) according to claim 1, characterized by , that the grid field (6) is formed by contour-soft and / or contour-unstable bar elements (7a, 7b) or has contour-soft and / or contour-unstable bar elements (7a, 7b), wherein the contour-soft bar elements (7a, 7b) are subjected to tension or compression and the contour-unstable bar elements (7a, 7b) are subjected exclusively to tension and are supported and clamped at both ends in the frame (4). [3] Lattice structure (3; 3a, 3b, 3c) according to claim 2, characterized by , that two or more rod elements (7a, 7b) are provided which are clamped in the frame (4) in a crossing manner. [4] Lattice structure (3; 3a, 3b, 3c) according to claim 3, characterized by , that at least one first bar element (7a) is provided which is clamped in the frame (4) under compression, and at least one second bar element (7b) is provided which is clamped in the frame (4) under tension, crossing the at least one first bar element (7a) and supporting itself on the same. [5] Lattice structure (3; 3a, 3b, 3c) according to any one of claims 2 to 4, characterized by , that the rod elements (7a, 7b) are detachably or indetachably supported and clamped in the frame (4). [6] Lattice structure (3; 3a, 3b, 3c) according to any one of claims 1 to 5, characterized by , that the grid field (6) is formed by at least one wire or rope element (13) or has at least one wire or rope element (13) which is subjected to tensile stress, deflected several times in the frame (4) and clamped. [7] Lattice structure (3; 3a, 3b, 3c) according to any one of claims 2 to 6, characterized by , that the rod elements (7a, 7b) and / or the at least one wire or rope element (13) are each clamped and supported at least at one end in the frame (4) by means of a damping element. [8] Lattice structure (3; 3a, 3b, 3c) according to any one of claims 2 to 6, characterized by , that the rod elements (7a, 7b) and / or the at least one wire or rope element (13) are clamped and supported in the frame (4) up to the plastic deformation limit thereof and / or are clamped and supported at least at one end in the frame (4) by means of a deformation element. [9] Lattice structure (3; 3a, 3b, 3c) according to any one of the preceding claims, characterized by, that adjacent and / or intersecting rod elements (7a, 7b) are at least partially separated from each other and / or held at defined distances by means of at least one spacing and / or fixing means (14). [10] Vehicle (1) with a lattice structure (3; 3a, 3b, 3c) according to any one of claims 1 to 8. [11] Method for producing a lattice structure (3; 3a, 3b, 3c) according to any one of claims 1 to 8, characterized by the following steps: a) Provision of a one-, two- or multi-part frame (4) which defines a free space (5) in which a grid field (6) can be arranged, b) Provision of rod elements (7a, 7b) and / or at least one wire or rope element (13), c) Fitting the one-, two- or multi-part frame (4) with the rod elements (7a, 7b) and / or the at least one wire or rope element (13) for bracing the same in the frame (4) such that, c1) that the one-, two- or multi-part frame (4) is elastically deformed, the rod elements (7a, 7b) and / or the at least one wire or cable element (13) are positioned and fixed at both ends by being deflected several times in receptacles (9) of the frame (4) and finally the elastic deformation of the frame (4) is relieved, whereby the rod elements (7a, 7b) are subjected to tension or compression and / or the at least one wire or cable element (13) is subjected to tension and is braced in the frame (4), or c2) that at both ends the rod elements (7a, 7b) and / or the at least one wire or cable element (13) are deflected several times and positioned and fixed in receptacles (9) of the two- or multi-part frame (4), whereby the parts of the frame (4) are adjusted relative to each other and, after reaching a certain tensile or compressive stress in the rod elements (7a, 7b) and / or a certain tensile stress in the at least one wire or cable element (13), the said parts of the frame (4) are fixed in this position relative to each other, or c3) that at both ends the rod elements (7a, 7b) and / or the at least one wire or rope element (13) are deflected several times under application of a certain prestress and positioned and fixed in receptacles (9) of the one-, two- or multi-part frame (4), or c4) that at both ends the rod elements (7a, 7b) and / or the at least one wire or cable element (13) are deflected several times, each time by means of at least one tensioning element (11) provided at one end, and are positioned in receptacles (9) of the one-, two- or multi-part frame (4) and are finally tensioned and fixed in the frame (4) by actuating the at least one tensioning element (11), or c5) that at both ends the rod elements (7a, 7b) and / or the at least one wire or rope element (13) are deflected several times under pretension in receptacles (9) of the one-, two- or multi-part frame (4) and finally are joined to the frame (4) in a material-bonded manner and fixed to it.

Images