DE102015218026A1 - Torque rod - Google Patents

Abstract

An axle brace (1) for a vehicle comprises a shaft (2) and two bearing areas (3). The axle strut (1) is formed from a support winding (4), at least two core elements (6) and two load-transfer elements (7), wherein the support winding (4) is formed from fiber-reinforced plastic composite material. A first load introduction element (7) is arranged on a first storage area (3) of the two storage areas (3) and a second load introduction element (7) is arranged on a second storage area (3) of the two storage areas (3). A first core element (6) of the at least two core elements (6) adjoins the first load introduction element (7) and a second core element (6) of the at least two core elements (6) adjoins the second load introduction element (7).

Description

The present invention relates to an axle strut having the above-mentioned features according to claim 1.

Axle struts for chassis of vehicles, such as commercial vehicles, trucks or cars are mainly loaded axially by both compressive and tensile forces. With roll loads, the axle strut is subjected to torsion to a slight extent. A particular challenge to the stability of the axle strut arises from a misuse load case, z. B. when a jack is attached to the axle strut.

From the DE 10 2013 007 284 A1 a connecting strut is known which has a rod portion and two transverse to the longitudinal axis directed bearing eyes. The connecting strut is made in part of fiber-reinforced plastic, wherein the fiber-reinforced plastic is formed by prepregs.

The present invention is based on the prior art based on the object to propose an improved axle strut, which has a low component weight and is inexpensive to manufacture. In addition, the Achsstrebe should have a good load behavior, inter alia, stresses within the axle strut can be taken in an improved manner. The axle strut should have a high flexural rigidity and buckling rigidity. The proposed axle strut should also be modularized.

The present invention proposes, starting from the above object, an axle strut with the features of claim 1 before. Further advantageous embodiments and developments will become apparent from the dependent claims.

An axle brace for a vehicle comprises a shaft and two bearing areas. The axle strut is formed from a support winding, at least two core elements and two load-transfer elements. The support winding is made of fiber-reinforced plastic composite material (FKV). A first load introduction element is arranged on a first storage area of the two storage areas and a second load introduction element is arranged on a second storage area of the two storage areas. A first core element of the at least two core elements adjoins the first load introduction element and a second core element adjoins the second load introduction element. The numbering here and throughout the description is merely a matter of simpler distinctness and does not indicate prioritization.

The axle strut has a shaft and two bearing areas. The shaft is arranged between the two bearing areas and connected thereto. The axle strut thus extends from the first storage area via the shaft to the second storage area. The first storage area limits the axle strut to a first side, the second storage area limits the axle strut to a second side. The shaft here is longer than wide, wherein the shaft preferably has a smaller width than the two bearing areas at its widest point. The storage areas may for example be formed cylindrically from their base. The first storage area flows smoothly into the shaft. The second storage area also flows smoothly into the shaft. In other words, the transition between the bearing areas and the shaft has no kink or edge.

The axle strut can be used here in a chassis of a vehicle, z. B. in a commercial vehicle, truck or car. On the axle strut act in a driving pressure and tensile forces that burden them axially. Axial hereby means in the longitudinal direction of the axle strut, this longitudinal direction being defined by the two bearing areas. In other words, the longitudinal direction of the axle strut is defined from the first storage area to the second storage area along the shaft. Furthermore, the axle strut is subjected to torsion when a roll load occurs on the chassis in which the axle strut is used. If, for example, a jack is attached to the axle strut, a so-called abuse load case occurs, i. H. Buckling forces act on the axle strut.

The axle strut has the radial support winding. This support winding is formed of FKV. Preferably, the support winding of a carbon fiber reinforced plastic (CFRP) is formed. The support winding may alternatively be formed from a glass fiber reinforced plastic (GRP) or from an aramid reinforced plastic (AFK) or from another suitable FRP. The carrying winding is endless fiber reinforced. A radial winding is in this case a winding which extends around the longitudinal axis of the axle strut. In other words, a lateral surface of the axle strut is formed by the radial support winding. In other words, the axle strut is a geometric extrusion body which has a lateral surface, a base surface and a top surface.

The axle strut also has the at least two core elements. The base of these core elements may for example be rectangular, trapezoidal, circular, oval, square, i-shaped or configured in any other suitable form. Preferably, the base of the at least two core elements is rectangular or trapezoidal. The base of the core elements is in this case, that surface which delimits the core element to one side. Each core element is formed as a geometric extrusion body having a lateral surface, a top surface and a base surface, wherein the top surface and the base surface are formed uniformly. The core elements can be manufactured continuously, whereby a modularization can be realized. The modularisability is also achieved in that more than two core elements can form the shaft of the axle strut. In other words, the axle strut for a vehicle type can be specifically adjusted by adjusting either the number of core elements or the shape of the at least two core elements.

The axle strut has a load introduction element on each of its bearing areas. Each Lasteinleitelement has a receptacle for a bearing element. The center axes of each receptacle may preferably be parallel to each other. Alternatively, the central axes of the receptacles may be arranged obliquely to each other, d. H. have an inclination angle to each other. The center axes of the receptacles are also preferably perpendicular to a longitudinal axis of the Achstrebe, which is defined in the longitudinal direction of the axle strut. Alternatively, the center axes of the receptacles or even a central axis of one of the receptacles may be arranged obliquely to the longitudinal axis of the axle strut. Each recording of Lasteinleitelemente is suitable depending on a bearing element, for. As a rubber-metal bearing to record. By means of these recordings an operative connection between the Lasteinleitelementen and thus the Achsstrebe and the bearing elements is made. The load introduction elements are designed starting from a load introduction via the respective receptacle. For example, each Lasteinleitelement at the region which is adjacent to the respective core element, having a longitudinal groove. For example, each Lasteinleitelement have a narrow tapered contour, which consists of z. B. is formed two narrow ends expiring. Alternatively, each load-introducing element may be formed at the portion adjacent to the respective core member by a flat surface.

Spatially between the two Lasteinleitelementen the at least two core element are arranged. The shaft of the axle strut thus has the at least two core elements. The first core member has a first end and a second end, the first end facing the first load-introducing element and the second end facing the second load-introducing element. The second core member has a first end and a second end, the first end facing the first load-introducing element and the second end facing the second load-introducing element. The first core element adjoins the first load introduction element and the second core element. The second core element adjoins the second load introduction element and the first core element. Adjacent means here that two components are arranged adjacent to each other, wherein an end of the first component is disposed directly opposite one end of the second component, and the first component has a small to no distance from the second component. The second end of the first core element thus adjoins the first end of the second core element. In other words, the components of the axle strut are arranged in the order of first load introduction element, first core element, second core element, second load introduction element.

When more than two core elements are used, they are spatially located between the first and second core elements. These further core elements each have a first end which faces the first load introduction element and a second end which faces the second load introduction element.

The further core elements are each arranged to one another such that the second end of a first further core element adjacent to the first end of a second further core element. In other words, the components of the axle strut are arranged in the order of first load introduction element, first core element, further core elements, second core element, second load introduction element.

When using the Achsstrebe in a vehicle, an axial load on the Lasteinleitelemente introduced into the Achsstrebe, z. As compressive or tensile forces, this load is forwarded by the Lasteinleitelementen surface by means of thrust (in the case of pressure loads) or positive engagement (in the case of tensile loads) to the support winding. The carrying coil absorbs this axial load. The core elements is thus preferably not or only to a very limited extent involved in the absorption of the axial load. Thus, local voltage spikes in the core elements are avoided. The Achsstrebe is due to the shape of the supporting winding of FKV lighter than conventional metallic Achsstreben. When using dry fibers or wet fibers, the axle strut is also less expensive to produce than with prepreg material.

According to a further embodiment, the at least two core elements are uniformly shaped. This means that the first core element and the second core element have the same base area and the same extent. Furthermore, the at least two core elements are formed of the same material.

According to a further embodiment, the at least two core elements are formed from a foam material or from a FKV. The foam material may preferably be a plastic foam, alternatively a metal foam, a graphite foam or another suitable foam material. The FRP material can either be a CFRP, a GRP, an AFK or another suitable plastic composite. Both the foam material and the FKV have a lower weight than core elements made of solid metal, which is why the axle strut is lighter than a conventional axle strut. Furthermore, the at least two core elements are inexpensive to manufacture. The at least two core elements lead to an improved flexural rigidity of the axle strut, which is advantageous, above all, in an abuse load case.

According to a further embodiment, the at least two core elements couple the winding strands of the support winding together. This coupling is a cross-coupling. In other words, the support winding encloses the lateral surface of the at least two core elements in a partial area. This coupling generates a higher area moment of inertia than with axis struts without cross coupling. The buckling capacity of the axle strut is thus also increased, since at a buckling load the support winding with the core profile acts together as a cross section, for example, in an abuse load case. The bending stiffness and the buckling stiffness of the axle strut are also increased.

According to a further embodiment, the axle strut has at least two core windings, wherein a first of the at least two core windings radially surrounds the first of the at least two core elements and a second of the at least two core windings radially surrounds the second of the at least two core elements and wherein the at least two core windings consist of a FKV are trained. Each core winding is thus a radial winding. In other words, the first core winding encloses the lateral surface of the first core element. In other words, the second core winding encloses the lateral surface of the second core element. The at least two core windings are formed, for example, from a CFRP, a GFRP, an AFK or another suitable FRP.

By wrapping the lateral surface of each core element, each having a core winding spatially between the at least two core elements, spatially formed between the first core element and the first Lasteinleitelement and spatially between the second core element and the second Lasteinleitelement a web. These three webs also couple the winding strands of the support winding. Through these webs, the bending stiffness of the axle strut is increased. If more than two core elements are used, then each core element is wrapped with a core winding on its lateral surface. Thus, a web is spatially formed between each two of the other core elements.

The webs may be arranged either transversely to the longitudinal axis of the axle strut and / or obliquely to the longitudinal axis of the axle strut. For example, all webs can be arranged parallel to each other. This means that the base surfaces of the at least two core elements are rectangular in shape. Instead, for example, only those webs can be arranged transversely to the longitudinal axis of the axle strut, which are arranged between the first Lasteinleitelement and the first core element and between the second Lasteinleitelement and the second core element. The web, which is arranged between the first core element and the second core element, is in this case arranged obliquely to the longitudinal axis of the axle strut. This means that the base surfaces of the at least two core elements are formed trapezoidal. If more than two core elements are used, the webs can be arranged, for example, similar to a truss structure.

According to a further embodiment, the axle strut has at least six compensation elements, wherein a first and a second compensation element of the at least six compensation elements adjoin the first load introduction element, the support winding and the core winding of the first core element, wherein a third and a fourth compensation element of the at least six Compensating elements adjacent to the supporting winding, to the core winding of the first core element and to the core winding of the second core element, and wherein a fifth and a sixth compensating element of the at least six compensating elements adjacent to the second Lasteinleitelement, to the supporting winding and to the core winding of the second core element. These compensating elements serve to avoid areas which are formed purely from a polymeric matrix without fiber reinforcement. In the formation of the lateral surface by means of the support winding, such areas would arise in the transition regions at which the at least two core elements adjoin one another or to the load-transfer elements. Such areas of pure polymeric matrix would act as a notch within the axle strut and build up internal stresses during the curing process.

According to a further embodiment, the load-introducing elements are formed from a metallic material. The load-introducing elements can be produced inexpensively by extrusion. For example, the Lasteinleitelemente of aluminum are formed.

According to a further embodiment, the load-introducing elements are formed from a fiber-plastic composite material. For example, the Lasteinleitelemente can be formed as a molded press parts of a preferably long fiber reinforced, thermosetting plastic composite material (SMC). Alternatively, the load-introducing elements may be formed of a long fiber reinforced thermoplastic resin composite (LFT) or a short fiber reinforced thermoplastic resin composite (KFT). This achieves a weight reduction in comparison to the use of metallic load introduction elements.

According to a further embodiment, a protective winding is arranged spatially between each load-transfer element and the support winding, which is connected to the respective load-transfer element and the support winding. This protective winding is formed from a FKV, preferably made of GRP, but may alternatively be formed from another suitable FKV. The protective winding is not load-bearing, and has a low rigidity. The protective winding serves to prevent contact corrosion, which occurs above all in the simultaneous use of aluminum load-transfer elements and a CFK support winding. The protective winding is either arranged only in the region of the load-transfer elements between the support winding and the load-transfer elements, or forms a lateral surface of the axle strut as a radial winding, wherein the support winding completely encloses this protective winding.

According to a further embodiment, the Achsstrebe is flat, wherein the first storage area is arranged in the same plane as the second storage area. The first load introduction element is thus likewise arranged in the same plane as the second load introduction element.

According to a further embodiment, the first bearing region of the axle strut is arranged in a first plane, which is spaced apart from a second plane, in which the second bearing region of the axle strut is arranged. The first load-introducing element is thus arranged in the first plane. The second load-introducing element is thus arranged in the second plane. The two planes are parallel to each other, horizontal and spaced apart. In other words, the distance of the first plane from the second plane leads to an offset of the two bearing areas. Preferably, however, the distance of the two planes is small, so that only a small offset is realized. To avoid wrinkling in the support winding, either very thin fiber strands can be used, which have a much smaller diameter than the width of the windings, or special prepreg material. Avoiding the formation of wrinkles is necessary to ensure the fatigue strength of the axle strut and the axial load capacity of the axle strut.

According to a further embodiment, the axle strut has two transverse windings, a first of the two transverse windings being arranged in the region of the first load introduction element and a second of the two transverse windings being arranged in the region of the second load introduction element. The transverse windings are formed from a FKV, preferably made of fiberglass, but may alternatively from another suitable FKV, z. B. CFK or AFK be formed. These transverse windings serve to increase the load capacity of the axle strut and support the support winding in the load application areas when tensile loads occur.

According to a further embodiment, the axle strut has a further transverse winding which encloses the shaft. The further transverse winding is formed from a FKV, preferably made of fiberglass, but may alternatively from another suitable FKV, z. B. CFK or AFK be formed. This additional transverse winding is used to increase the load capacity of the axle strut, to protect against contamination and to protect against sudden loads (impact loads).

In a method for producing an axle strut according to a previously described embodiment according to a first embodiment variant, first the at least two core elements and the two load introduction elements are inserted into an assembly tool, wherein the at least two core elements are arranged spatially between the two load introduction elements. Each of the at least two core elements may in this case for example be enclosed by one of the at least two core windings. In addition, in each case one compensation element can be arranged in the transition regions between the at least two core elements and the two load elements. Subsequently, fiber layers are wound radially on the Lasteinleitelemente and the core elements. The fiber layers form a lateral surface of the pre-Achsstrebe. The load-introducing elements and the core elements jointly form a pre-assembled component. Then a pre-Achsstrebe is removed from the assembly tool and inserted into a mold. A polymeric matrix is injected, then the axle strut is cured, and finally removed from the mold.

The assembly tool can be designed such that an offset between the two storage areas of the axle strut can be adjusted. The two load-introducing elements and the at least Two core elements form a pre-assembled component within the assembly tool.

Dry fiber is used in this process. If the axle strut has a radial protective winding, first the fiber layers of this protective winding are wound radially around the at least two core elements and the load-transfer elements. Subsequently, the support winding is wrapped radially around the protective winding. The support winding thus encloses the protective winding and the Lasteinleitelemente and the at least two core elements in a partial area. If the axle strut has no protection winding, the fiber layers of the support winding are wound directly around the load introduction elements and the at least two core elements. The support winding and possibly the protective winding thus form the lateral surface of the axle strut. The Lasteinleitelemente, the at least two core elements, the support winding and possibly the protective winding thus form the pre-Achsstrebe. This is inserted into the mold. The mold is tight. If a polymeric matrix is introduced into the fiber layers of the support winding and possibly the protective winding, this polymer matrix remains within the mold. The pre-Achsstrebe cures in the mold. Finally, the axle strut can be removed from the mold.

In a method for producing an axle strut according to an embodiment described above according to a further embodiment variant, the at least two core elements and the two load introduction elements are first inserted into an assembly tool, wherein the at least two core elements are arranged spatially between the two load introduction elements. Each of the at least two core elements may in this case for example be enclosed by one of the at least two core windings. In addition, in each case one compensation element can be arranged in the transition regions between the at least two core elements and the two load elements. Subsequently, fiber layers are wound radially on the Lasteinleitelemente and the core elements. The load-introducing elements and the core elements jointly form a pre-assembled component. Then a pre-Achsstrebe is removed from the assembly tool and inserted into a mold. Subsequently, the axle strut is cured, and finally removed from the mold.

This method differs from the previously described method only in that wet fibers or pre-impregnated prepreg material are used instead of dry fibers. The support winding and possibly the protective winding are thus produced by wet winding or by the prepreg winding method. The step of injecting a polymeric matrix is eliminated. However, the pre-axis strut must still harden in the mold. The assembly tool is adapted to the use of wet fibers or prepreg.

In a method for producing an axle strut according to a previously described embodiment according to a first embodiment variant, first the at least two core elements and the two load introduction elements are inserted into an assembly tool, wherein the at least two core elements are arranged spatially between the two load introduction elements. Each of the at least two core elements may in this case for example be enclosed by one of the at least two core windings. In addition, in each case one compensation element can be arranged in the transition regions between the at least two core elements and the two load elements. Subsequently, fiber layers are wound radially on the Lasteinleitelemente and the core elements. The load-introducing elements and the core elements jointly form a pre-assembled component. Then a pre-Achsstrebe is removed from the assembly tool and inserted into a mold. A polymeric matrix is injected. Then fiber layers are wound as a transverse winding around the pre-Achsstrebe. Subsequently, the axle strut is cured, and finally removed from the mold.

In this process again dry fibers are used for the support winding and possibly for the protective winding. This method differs from the previously described methods in that a transverse winding is applied. The transverse winding can be produced either by the dry-winding method, or by the wet-winding method or by the prepreg-winding method. In the dry winding process, a polymer matrix must also be injected into the transverse winding, which must harden. The mold is suitable in this case that a transverse winding can be generated. The transverse winding can either enclose only the areas of the load-transfer elements or these and additionally the shaft of the axle strut.

In a method for producing an axle strut according to a previously described embodiment according to a first embodiment variant, first the at least two core elements and the two load introduction elements are inserted into an assembly tool, wherein the at least two core elements are arranged spatially between the two load introduction elements. Each of the at least two core elements may in this case for example be enclosed by one of the at least two core windings. In addition, in each case one compensation element can be arranged in the transition regions between the at least two core elements and the two load elements. Then be Fiber layers are wound radially on the Lasteinleitelemente and the core elements. The load-introducing elements and the core elements jointly form a pre-assembled component. Then a pre-Achsstrebe is removed from the assembly tool and inserted into a mold. Then fiber layers are wound as a transverse winding around the pre-Achsstrebe. Subsequently, the axle strut is cured, and finally removed from the mold.

The difference between this method and the previously described method is that wet fibers or prepreg material are used for the support coil and, if necessary, the protective coil. The transverse winding can be produced either by the dry-winding method, or by the wet-winding method or by the prepreg-winding method. In the dry winding process, a polymer matrix must also be injected into the transverse winding, which must harden. The mold is suitable in this case that a transverse winding can be generated. The transverse winding can either enclose only the areas of the load-transfer elements or these and additionally the shaft of the axle strut.

Various embodiments and details of the invention will be described in more detail with reference to the figures explained below. Show it:

1 a schematic representation of an axle strut with straight webs according to an embodiment,

2 a schematic detail of the Achsstrebe according to the embodiment 1 .

3 a schematic representation of a portion of the axle strut with oblique webs according to an embodiment, and

4 a schematic detail of the Achsstrebe according to the embodiment 3 ,

1 shows a schematic representation of an axle strut 1 with straight bars 11 according to an embodiment. The axle strut 1 has a radial support winding 4 , a first load-introducing element 7a , a second load introduction element 7b , a first core element 6a , a second core element 6b and two more core elements 6c on. In addition, the axle strut has 1 four core windings 8th on. Furthermore, the axle strut 1 a shaft 2 and two storage areas 3 on. The shaft 2 is with each of the two storage areas 3 connected. The shaft 2 This is much narrower than the diameter of the storage areas 3 and formed in a straight line. The shape of the storage areas 3 depends on the shape of the Lasteinleitelemente 7a . 7b , The first load introduction element 7a is at a first storage area 3 the axle strut 1 arranged. The second load introduction element 7b is at a second storage area 3 the axle strut 1 arranged. The first storage area 3 and thus the first load introduction element 7a limits the axle strut 1 to a first page. The second storage area 3 and thus the second load-introducing element 7b limits the axle strut 1 to a second page. The first storage area 3 flows fluently into the shaft 2 above. The second storage area 3 also flows fluently into the shaft 2 over, D. h., that the transition between the storage areas 3 and the shaft 2 has no notch or edge. The carrying winding 4 is formed from a fiber-plastic composite (FKV). The carrying winding 4 is a radial winding, ie the supporting winding 4 runs around the longitudinal axes 9 the axle strut 1 around. In other words, the carrying coil forms 4 a lateral surface of the axle strut 1 out, with the axle strut 1 itself is designed as a geometric extrusion body. The carrying winding 4 thus limits the axle strut 1 outwardly.

The shaft 2 the axle strut 1 is from the core elements 6a . 6b . 6c formed. These core elements 6a . 6b . 6c are preferably formed from a foam material or a FKV. Each of the core elements 6a . 6b . 6c has a first end which is the first Lasteinleitelement 7a facing and a second end, which the second Lasteinleitelement 7b is facing. All four core elements 6a . 6b . 6c are uniformly shaped as a geometric extrusion body having a shell surface, a base surface and a top surface. The base and the top surface are designed uniformly. That is, it is a straight extruded body. The base of each core element 6a . 6b . 6c is rectangular shaped. Every core element 6a . 6b . 6c is each of a core winding 8th enclosed. D. h., That the lateral surfaces of each core element 6a . 6b . 6c each of a core winding 8th are enclosed. The core windings 8th are preferably formed from FKV.

The first end of the first core element 6a adjoins the first load introduction element 7a at. The second end of the first core element 6a adjoins the first end of the first further core element 6c at. The second end of the first further core element 6c adjoins the first end of the second further core element 6c at. The second end of the second further core element 6c adjoins the first end of the second core element 6b at. The second end of the second core element 6b Adjacent to the second load introduction element 7b at. Along the longitudinal axes 9 the axle strut 1 the order is thus the first load introduction element 7a , first core element 6a , first further core element 6c , second another core element 6c , second core element 6b , second load introduction element 7b ,

Spatially between the first load introduction element 7a and the first core element 6a is a first jetty 11 arranged. Spatially between the first core element 6a and the first other core element 6c a second bridge is arranged. Spatially between the first further core element 6c and the second other core element 6c is a third jetty 11 arranged. Spatially between the second further core element 6c and the second core element 6b is a fourth jetty 11 arranged. Spatially between the second core element 6b and the second load-introducing element 7b is a fifth jetty 11 arranged. These bridges 11 are by means of the core windings 8th the core elements 6a . 6b . 6c formed at this adjoining area. A jetty 11 thus denotes the area between the core elements 6a . 6b . 6c or between the core elements 6a . 6b . 6c and the load introduction elements 7a . 7b , Both the core elements 6a . 6b . 6c and the footbridges 11 serve for the transverse coupling of the winding strands of the support winding 4 What the flexural rigidity and dent resistance of the axle strut 1 improved compared to conventional axle struts.

The load introduction elements 7a . 7b are preferably formed from a metallic material, for example. From aluminum. Each load introduction element 7a . 7b has a recording 12 for a storage device. Both load introduction elements 7a . 7b are uniformly shaped. The pictures 12 the two load introduction elements 7a . 7b are also uniformly shaped. Every shot 12 has a circular cross-section. Every shot 12 also has a central axis 10 on. The central axis 10 the recording 12 of the first load introduction element 7a is perpendicular to the longitudinal axis 9 the axle strut 1 , The central axis 10 the recording 12 of the second load-introducing element 7b is perpendicular to the longitudinal axis 9 the Achstrebe 1 , Besides, both are middle axes 10 arranged parallel to each other and in a plane. Overall, the axle strut 1 just shaped. The longitudinal axis 9 the axle strut 1 thus extends from the first storage area 3 to the second storage area 3 or from the first load introduction element 7a to the second load-introducing element 7b ,

Will the axle strut 1 used in a vehicle and occur on the axle strut 1 Compressive or tensile forces, these are due to the support winding 4 accepted. The load is introduced via the load introduction elements 7a . 7b , Here are the core elements 6a . 6b . 6c for transverse coupling of the winding strands of the support winding 4 and are not involved in the assumption of the burden. Acts a bending force on the axle strut 1 , serve the core elements 6a . 6b . 6c for the distribution of the induced forces in the winding strands of the support winding 4 , In such a buckling load case, the carrying winding behaves 4 with the core elements 6a . 6b . 6c and the core windings 8th as a common cross section.

2 shows a schematic detail of the axle strut 1 according to the embodiment 1 , The first load introduction element is considered 7a , the first core element 6a and the first other core element 6c as well as the first jetty 11 and the second bridge 11 , The core windings 8th are clearly visible here.

The axle strut 1 has a total of ten compensation elements 5 on, ie, per bridge 11 has the axle strut 1 two compensation elements 5 on. The compensation elements 5 serve to avoid areas of pure polymeric matrix that act as a notch within the axle strut 1 would work. A first compensation element 5 adjoins both the carrying winding 4 as well as the first load introduction element 7a , as well as to the core winding 8th of the first core element 6a at. A second compensation element 5 adjoins both the carrying winding 4 as well as the first load introduction element 7a as well as the core winding 8th of the first core element 6a at. A third compensation element 5 adjoins both the carrying winding 4 as well as the core winding 8th of the first core element 6a as well as the core winding 8th the first further core element 6c at. A fourth compensation element 5 adjoins both the carrying winding 4 as well as the core winding 8th of the first core element 6a as well as the core winding 8th the first further core element 6c at.

Furthermore, it can be clearly seen that the webs 11 are arranged straight. That is, every bridge 11 is transverse to the longitudinal axis 9 the axle strut 1 arranged, each jetty 11 parallel to the other bridges 11 is. The five bridges 11 are equidistant to each other, ie that the four core elements 6a . 6b . 6c have the same longitudinal extent.

3 shows a schematic representation of a portion of the axle strut 1 with sloping bars 11 according to one embodiment, the axle strut 1 has the same components as the axle strut 1 out 1 , That is, the axle strut 1 has a carrying winding 4 , two load-transfer elements 7a . 7b , wherein only the first load introduction element 7a shown is four core elements 6a . 6b . 6c wherein the second core element 6b is shown only in a partial area, core windings 8th around every core element 6a . 6b . 6c and footbridges 11 on. The axle strut 1 also has a shaft 2 and two storage area 3 on, with only one storage area 3 is shown. In addition, the axle strut has 1 a longitudinal axis 9 on.

As well as in 1 is at the storage area 3 the axle strut 1 the first load introduction element 7a arranged. The first load introduction element 7a has, as well as the first Lasteinleitelement 1 , a recording 12 for a camp. This recording 12 is circular and has a central axis 10 on. This central axis 10 is on the longitudinal axis 9 the axle strut 1 arranged. The central axis 10 is also perpendicular to the longitudinal axis 9 the axle strut 1 ,

The difference between 1 and 3 is that the axle strut 1 out 3 sloping footbridges 11 having. The first core element 6a and the second core element 6b are trapezoid-shaped and point-symmetrical. The first further core element 6c and the second further core element 6c are trapezoid-shaped and point-symmetrical. The first core element 6a and the second core element 6b are uniformly shaped. The first further core element 6c and the second further core element 6c are also uniformly shaped. However, the first core element is 6a and the second core element 6b different from the first other core element 6c and the second other core element 6c ,

A first jetty 11 is between the first load introduction element 7a and the first core element 6a arranged. This jetty 11 is by means of the core winding 8th of the first core element 6a formed. This first jetty 11 is just. That is, it is perpendicular to the longitudinal axis 9 the axle strut 1 arranged. Spatially between the first core element 6a and the first other core element 6c is a second jetty 11 arranged. This second jetty 11 is formed by the core winding 8th of the first core element 6a and through the core winding 8th the first further core element 6c , This second jetty 11 is oblique to the longitudinal axis 9 the axle strut 1 arranged and thus has an angle to the longitudinal axis 9 the axle strut 1 on. This angle is not a right angle. The slope of the second strut 11 is due to the trapezoidal shape of the first core element 6a and the first further core element 6c ,

Spatially between the first further core element 6c and the second other core element 6c is a third jetty 11 arranged. This third jetty 11 is formed by means of the core winding of the first further core element 6c and by means of the core winding 8th the second further core element 6c , The third footbridge 11 is also sloping. The third and the second footbridge 11 are in this case point-symmetrical to each other. The slope of the third bridge 11 is due to the trapezoidal shape of the first further core element 6c and the second further core element 6c , Spatially between the second further core element 6c and the second core element 6b is a fourth jetty 11 arranged. This fourth jetty 11 is formed by means of the core winding 8th the second further core element 6c and by means of the core winding 8th of the second core element 6b , The fourth bridge 11 is also oblique to the longitudinal axis 9 the axle strut 1 , The fourth bridge 11 is axisymmetric to the second bridge 11 and point symmetric to the third land 11 , The slope of the fourth bridge 11 is due to the trapezoidal shape of the second further core element 6c and the second core element 6b ,

As well as in 1 borders the first core element 6a to the first load introduction element 7a at. The first core element 6a also borders on the first further core element 6c at. The first further core element 6c borders on the second further core element 6c at. The second further core element 6c adjoins the second core element 6b at. The carrying winding 4 forms a lateral surface of the axle strut 1 from and encloses both the load transfer elements 7a . 7b as well as all core elements 6a . 6b . 6c , The carrying winding 4 is formed here from a FKV. The core windings 8th are also formed here from a FKV. The core elements 6a . 6b . 6c are either made of a foam material, for. B. from a plastic foam, or molded from a FKV, the load transfer elements 7a . 7b are here from a metallic material, eg. As aluminum, or molded from a FKV.

Will when using the axle strut 1 in a vehicle, a load, for example. Compressive or tensile forces on the recording 12 in the load introduction element 7a introduced, gives the Lasteinleitelement 7a the forces continue to the carrying winding 4 , The bridges 11 as well as the core elements 6a . 6b . 6c take over a transverse coupling of the winding strands of the supporting winding 4 , As a result, the Beulsteifigkeit and bending stiffness of the axle strut 1 improved compared to a conventional axle strut. Due to the oblique arrangement of some bars 11 This cross coupling behaves similar to a truss structure. This has a better load distribution in the support winding 4 result.

4 shows a schematic detail of the axle strut 1 according to the embodiment 3 , It will detail the area of the second further core element 6c with its core winding 8th shown. It can be clearly seen that the core winding 8th the lateral surface of the second further core element 6c encloses. As already in 3 shown, the second adjacent core element 6c to the first other core element 6c and to the second core element 6b at. The lateral surface of the first further core element 6c is from his core winding 8th enclosed. The lateral surface of the second core element 6b is from his core winding 8th enclosed. As already in 2 is shown in the transition area between the first another core element 6c and the second other core element 6c a first compensation element 5 and a second compensating element, which is not shown here, arranged. In the transition region between the second further core element 6c and the second core element 6b is, as already in 2 shown another compensation element 5 and yet another compensation element, which is not shown here, arranged. These compensation elements 5 are preferably formed from a FKV. The compensation elements 5 serve, as already in 2 to avoid areas of pure polymeric matrix, as these areas have a notch effect within the axis strut 1 would cause.

The exemplary embodiments illustrated here are chosen only by way of example. For example, the storage areas of the axle strut could not be arranged in the same plane. This means that an offset occurs between the storage areas. In addition, the core elements could be formed differently from each other and, for example, have different longitudinal extents. Also, more or less core elements could form the shaft of the axle strut. For example, the shaft of the axle strut could be formed by only two core elements. These two core elements could have a trapezoidal shape, which would lead to an oblique and two straight webs represent the cross-coupling of the winding strands of the supporting winding. Furthermore, a transverse winding could be formed around the bearing areas of the axle strut, which additionally stabilizes the axle strut. In addition, the receptacles for the bearing of the Lasteinleitelemente could have a different cross-sectional area than circular, for example. Oval, rectangular or in any other suitable form. Furthermore, the center axes of the recordings of the load introduction elements could not be arranged parallel to one another, but at an angle to one another. Thus, the bearings would be tilted to each other. Furthermore, a protective winding could be provided between the Lasteinleitelementen and the support winding, which serves corrosion protection, if the Lasteinleitelemente and the support winding would be an unfavorable combination of materials such. As CFK and aluminum. In addition, the core elements could not be enclosed by core windings.

LIST OF REFERENCE NUMBERS

1

Torque rod

2

shaft

3

storage area

4

supporting winding

5

compensation element

6a

first core element

6b

second core element

6c

another core element

7a

first load introduction element

7b

second load introduction element

8th

core winding

9

longitudinal axis

10

central axis

11

web

12

admission

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102013007284 A1 [0003]

Claims (17)

Axle strut ( 1 ) for a vehicle, comprising a shaft ( 2 ) and two storage areas ( 3 ), characterized in that the axle strut ( 1 ) is formed from a support winding ( 4 ), at least two core elements ( 6 ) and two load introduction elements ( 7 ), wherein the support winding ( 4 ) is formed of fiber-plastic composite material, and wherein a first load introduction element ( 7 ) at a first storage area ( 3 ) of the two storage areas ( 3 ) and a second load introduction element ( 7 ) at a second storage area ( 3 ) of the two storage areas ( 3 ), and wherein a first core element ( 6 ) of the at least two core elements ( 6 ) adjoins the first load introduction element ( 7 ) and a second core element ( 6 ) of the at least two core elements ( 6 ) adjoins the second load introduction element ( 7 ). Axle strut ( 1 ) according to one of the preceding claims, characterized in that the at least two core elements ( 6 ) are uniformly shaped. Axle strut ( 1 ) according to one of the preceding claims, characterized in that the at least two core elements ( 6 ) are formed of a foam material or of a fiber-reinforced plastic composite material. Axle strut ( 1 ) according to one of the preceding claims, characterized in that the at least two core elements ( 6 ) the winding strands of the support winding ( 4 ) couple together. Axle strut ( 1 ) according to one of the preceding claims, characterized in that the axle strut ( 1 ) at least two core windings ( 8th ), wherein a first of the at least two core windings ( 8th ) the first of the at least two core elements ( 6 ) radially encloses and a second of the at least two core windings ( 8th ) the second of the at least two core elements ( 6 ) radially surrounds and wherein the at least two core windings ( 8th ) are formed from a fiber-plastic composite material. Axle strut ( 1 ) according to claim 5, characterized in that the axle strut ( 1 ) at least six compensation elements ( 5 ), wherein a first and a second compensation element ( 5 ) of the at least six compensation elements ( 5 ) adjoin the first load introduction element ( 7 ), to the support winding ( 4 ) and to the core winding ( 8th ) of the first core element ( 6 ), with a third and a fourth compensation element ( 5 ) of the at least six compensation elements ( 5 ) adjoin the support winding ( 4 ), to the core winding ( 8th ) of the first core element ( 6 ) and to the core winding ( 8th ) of the second core element ( 6 ), and wherein a fifth and a sixth compensation element ( 5 ) of the at least six compensation elements ( 5 ) adjoin the second load introduction element ( 7 ), to the support winding ( 4 ) and to the core winding ( 8th ) of the second core element ( 6 ). Axle strut ( 1 ) according to one of the preceding claims, characterized in that the load introduction elements ( 7 ) are formed of a metallic material. Axle strut ( 1 ) according to one of claims 1 to 6, characterized in that the load introduction elements ( 7 ) are formed from a fiber plastic composite material. Axle strut ( 1 ) according to one of the preceding claims, characterized in that spatially between each load introduction elements ( 7 ) and the carrying winding ( 4 ) a protective winding is arranged, which with the respective load introduction element ( 7 ) and the carrying winding ( 4 ) connected is Axle strut ( 1 ) according to one of the preceding claims, characterized in that the axle strut ( 1 ) is formed, wherein the first storage area ( 3 ) is arranged in the same plane as the second storage area ( 3 ). Axle strut ( 1 ) according to one of claims 1 to 9, characterized in that the first storage area ( 3 ) of the axle strut ( 1 ) is arranged in a first plane, which is spaced from a second plane, in which the second storage area ( 3 ) of the axle strut ( 1 ) is arranged. Axle strut ( 1 ) according to one of the preceding claims, characterized in that the axle strut ( 1 ) has two transverse windings, wherein a first of the two transverse windings in the region of the first load introduction element ( 7 ) and a second of the two transverse windings in the region of the second load introduction element ( 7 ) is arranged. Axle strut ( 1 ) according to one of the preceding claims, characterized in that the axle strut ( 1 ) has a further transverse winding, which the shaft ( 2 ) encloses. Method for producing an axle strut ( 1 ) according to one of the preceding claims, characterized in that - the at least two core elements ( 6 ) and the two load introduction elements ( 7 ) are inserted into an assembly tool, wherein the at least two core elements ( 6 ) spatially between the two load introduction elements ( 7 ) are arranged, - fiber layers radially on the load introduction elements ( 7 ) and the core elements ( 6 ), which form a pre-assembled component, are wound, - a pre-Achsstrebe is removed from the assembly tool, - the pre-Achsstrebe is inserted into a mold, - a polymer matrix is injected, - the Achsstrebe ( 1 ), and - the axle strut ( 1 ) is removed from the mold. Method for producing an axle strut ( 1 ) according to one of claims 1 to 13, characterized in that - the at least two core elements ( 6 ) and the two load introduction elements ( 7 ) are inserted into an assembly tool, wherein the at least two core elements ( 6 ) spatially between the two load introduction elements ( 7 ) are arranged, - fiber layers radially on the load introduction elements ( 7 ) and the core elements ( 6 ), which form a pre-assembled component, are wound, - a pre-Achsstrebe is removed from the assembly tool, - the pre-Achsstrebe is inserted into a mold, - the Achsstrebe ( 1 ), and - the axle strut ( 1 ) is removed from the mold. Method for producing an axle strut ( 1 ) according to one of claims 1 to 13, characterized in that - the at least two core elements ( 6 ) and the two load introduction elements ( 7 ) are inserted into an assembly tool, wherein the at least two core elements ( 6 ) spatially between the two load introduction elements ( 7 ) are arranged, - fiber layers radially on the load introduction elements ( 7 ) and the core elements ( 6 ), which form a pre-assembled component, are wound, - a pre-Achsstrebe is removed from the assembly tool, - the pre-Achsstrebe is inserted into a mold, - a polymer matrix is injected, - fiber layers wrapped as a transverse winding around the pre-Achsstrebe - the axle strut ( 1 ), and - the axle strut ( 1 ) is removed from the mold. Method for producing an axle strut ( 1 ) according to one of claims 1 to 13, characterized in that - the at least two core elements ( 6 ) and the two load introduction elements ( 7 ) are inserted into an assembly tool, wherein the at least two core elements ( 6 ) spatially between the two load introduction elements ( 7 ) are arranged, - fiber layers radially on the load introduction elements ( 7 ) and the core elements ( 6 ), which form a pre-assembled component, are wound, - a pre-Achsstrebe is removed from the assembly tool, - the pre-Achsstrebe is inserted into a mold, - fiber layers are wound as a transverse winding around the pre-Achsstrebe, - the Achsstrebe ( 1 ), and - the axle strut ( 1 ) is removed from the mold.

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