DE102018206325A1 - Axle strut and method for producing an axle strut - Google Patents

Abstract

The invention relates to an axle strut (1) for a vehicle, comprising a shaft (2) and a first and second bearing region (3a, 3b), the axle strut (1) comprising a support winding (4) consisting of a plurality of winding strands, a core profile (6) and a first and second Lasteinleitelement (7a, 7b). The core profile (6) is arranged spatially between the two load introduction elements (7a, 7b). The support winding (4) and the core profile (6) are formed from fiber-reinforced plastic composite material. The first load introduction element (7a) is arranged on the first bearing region (3a) and the second load introduction element (7b) on the second bearing region (3b). The supporting winding (4) surrounds the load-transfer elements (7a, 7b) and the core profile (6) at least partially radially about a transverse axis (T) and connects them together along a longitudinal axis (L) of the axle strut (1). The support winding (4) is arranged along the longitudinal axis (L) of the axle strut (1) at least partially in helical form on the two load-transfer elements (7a, 7b) and the core profile (6). Furthermore, the invention relates to a method for producing an axle strut (1).

Description

The present invention relates to a Achsstrebe with the above-conceptual features according to claim 1. Furthermore, the invention relates to a method for producing an axle strut with the above-conceptual features according to claim 13.

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 load capacity of the axle strut results from a misuse load case, z. B. when a jack is attached to the axle strut.

From the DE 10 2013 007 284 A1 is a Achsstrebe with a rod portion and with both ends of the same arranged and directed transversely to the longitudinal axis of the rod portion bearing eyes known. The axle strut consists at least partially of fiber-reinforced plastic, wherein the fiber-reinforced plastic is at least partially formed by prepregs.

The object of the present invention, based on the prior art, is to propose an improved axle strut which has a low component mass and is inexpensive to produce. 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 lateral rigidity.

Based on the above object, the present invention proposes an axle strut with the features according to claim 1 and a method for producing an axle strut with the features according to claim 13. Further advantageous embodiments and developments will become apparent from the dependent claims.

An axle strut for a vehicle according to the invention comprises a shaft and a first and second bearing area. The axle strut has a carrier winding consisting of a multiplicity of winding strands, a core profile and a first and second load introduction element. The core profile is spatially arranged between the two load introduction elements. The support winding and the core profile are formed from fiber-reinforced plastic composite material. The first load introduction element is arranged on the first storage area and the second load introduction element on the second storage area. The support winding encloses the load-transfer elements and the core profile about a transverse axis at least partially radially, and connects them together along a longitudinal axis of the axle strut. The support winding is arranged along the longitudinal axis of the axle strut at least partially in helical form on the two load-introducing elements and the core profile.

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 stay to a first side and the second storage area limits the axle stay 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 has a load introduction element on each of its bearing areas. Each load-introducing element has a receptacle for a bearing. Each recording of Lasteinleitelemente is suitable for each camp, z. As a rubber-metal bearing to record. By means of these recordings, an operative connection between the Lasteinleitelementen and the bearings is made. The load introduction elements are designed starting from a load introduction via the respective receptacle.

For example, each Lasteinleitelement at the area which is adjacent to the core profile, have a longitudinal groove. In particular, each Lasteinleitelement have a narrow tapered contour, which consists of z. B. is formed two narrow ends expiring. Furthermore, each Lasteinleitelement have a recess which is free of material, wherein the shape of the recess is oriented to the voltage curve in the respective load-introducing element.

The axle strut can be used in a chassis of a vehicle, for. 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 means in this case in the longitudinal direction of the axle strut, wherein the longitudinal direction is defined by the two storage 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. Will be at the Axle strut, for example, a jack attached, a so-called misuse load case occurs, that is, on the axle strut act bending stresses.

The axle strut has the support winding, which is arranged partially circumferentially around the transverse axis and partly in helical form about the longitudinal axis. Under a helical shape is to be understood that the support winding winds around the axis strut with a constant pitch substantially and conforms both to the core profile, as well as to the Lasteinleitelemente. This means that the longitudinal axis of the axle strut represents a center axis for the support winding arranged at least partially in helical form. Furthermore, the helical form can be understood to mean a helical or helical arrangement of the support winding on the axle strut. In other words, the support winding is divided, starting from the longitudinal axis in a parallel to the longitudinal axis oriented winding and in an obliquely oriented to the longitudinal axis wrapping, both wrappings are integrally connected to the supporting winding.

The carrying winding is formed from fiber-plastic composite (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 support winding is endless fiber reinforced and consists of a variety of winding strands. In this case, a radial winding is a winding which extends at least partially around the transverse axis and at least partially around the longitudinal axis of the axial strut. In other words, an at least partially three-dimensional lateral surface of the axle strut is formed by the support winding. In other words, the axle strut is a geometric extrusion body.

The axle strut also has the core profile. This core profile is preferably also formed from a FKV, preferably made of GRP. Alternatively, the core profile may also be derived from another suitable FKV, e.g. As CFK or AFK, be formed. The core profile is preferably a pultrusion profile, but may alternatively be formed as a pultring profile or as a winding profile or as a braided profile or other suitable profile. As a result, the core profile is inexpensive to manufacture. The core profile can be manufactured continuously, whereby a modularization can be realized. In other words, in continuous production, the core profile may be cut to a length of shaft required for a specific vehicle type. The core profile has a certain axial softness in a preferred use of a FKV with a fiber angle that deviates significantly from 0 °, for example by 45 °. This is necessary in the event of an abuse load case in order to redirect the forces occurring there in the supporting winding. Axial forces are thus not or only to a very limited extent directed into the core profile.

Preferably, the at least partially arranged in helical support winding is formed in the region of the shaft of the axle strut. Thus, the support winding, which is arranged at least partially in helical form, encloses, for one, the core profile and, on the other hand, transition regions between the respective load-transfer element and the core profile. Consequently, the support winding, which is arranged at least partially in helical form, increases the carrying capacity of the axle strut and supports the support winding in the transition areas between the respective load introduction element and the core profile, in particular when tensile loads occur in the joining zone between the load introduction elements and the support winding.

The support winding, which is arranged at least partially in helical form, preferably surrounds the axle strut in the region of the shaft by at least 180 °. Thus, there is then a half wrap of the axle strut by the at least partially arranged in helical support winding. A complete wrapping is when the at least partially arranged in helical support winding surrounds the axle strut in the region of the shaft by 360 °. In other words, when the axle strut rotates about the transverse axis by 180 °, the axle strut rotates about the longitudinal axis by at least 360 °. Furthermore, the axle strut can be surrounded several times by the support winding. If the axle strut is rotated by more than 360 ° about the longitudinal axis, while a rotation about the transverse axis of the axle strut takes place by only 180 °, the support winding arranged at least partially in helical form can be made particularly compact. For an advantageous embodiment of the axle strut, the rotations of the axle strut always take place in 180 ° steps both about the transverse axis and about the longitudinal axis.

Spatially between the two Lasteinleitelementen the core profile is arranged. The shaft of the axle strut thus has the core profile. The core profile has a certain distance to the first and the second load introduction element. In other words, between the core profile and the first Lasteinleitelement and between the core profile and the second Lasteinleitelement a respective material-free gap. The core profile and the two load introduction elements are thus decoupled from each other. This decoupling also remains with each load case. This means no Time creates a direct operative connection between the Lasteinleitelementen and the core profile.

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 profile is thus preferably not or only to a very limited extent involved in the absorption of the axial load. Thus, local stress peaks in the core profile are avoided. The axle strut is lighter than conventional metallic axle struts due to the shape of the support coil and core profile made of FRP.

Preferably, the core profile has at least partially a convex outer geometry, wherein the supporting winding has a convex shape corresponding to the at least partially convex outer geometry of the core profile. The core profile has a substantially square tube cross section, preferably a square tube cross section, wherein at least one of the four sides of the core profile, and preferably all four sides of the core profile having a convex outer geometry. In other words, the four outer sides of the core profile on an outwardly curved lateral surface. The vertex of the respective side of the core profile thus extends axially parallel to the longitudinal axis of the axle strut or the core profile. Due to the convex outer geometry of the core profile is achieved that a defined depositing of the winding strands is possible and thus an accurate positioning of the supporting winding can be done on the axle strut.

The core profile preferably has at least one stiffening strut. Thus, one or more stiffening struts may be disposed within the core profile and extend through the square tube section. As a result, the rigidity of the core profile increases, so that the lateral load capacity is improved. Alternatively or additionally, the core profile has a foam filling to increase the rigidity. A collapse of the core profile under the high pressure, which prevails in a press or in an autoclave when curing the Achsstrebe with a supporting winding of FKV, preferably made of CFRP, is prevented by the cross section of the core profile, and the stiffening struts and / or foam filling. The core profile is thus designed such that this high external pressures can withstand.

According to a further embodiment, the core profile couples the winding strands of the supporting winding together. In other words, the supporting winding encloses the lateral surface of the core profile in a partial region, preferably on at least two of the four sides of the square cross section. This coupling generates a higher area moment of inertia. 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. The bending stiffness and the buckling stiffness of the axle strut are also increased. Since the core profile is not connected to the Lasteinleitelementen, but spaced therefrom, the coupling of the winding strands of the supporting winding is interrupted in the gap region. This does not significantly affect buckling capacity and / or dent resistance.

According to a further embodiment, the load-introducing elements are formed from a metal, preferably from aluminum. The load-introducing elements can be produced inexpensively by extrusion.

According to a further embodiment, both receptacles of Lasteinleitelemente are formed as a bore whose central axis is perpendicular to the longitudinal axis of the axle strut. This means that the central axes of both images are arranged parallel to one another. Since both central axes are perpendicular to the longitudinal axis of the axle strut, the axle strut has no so-called lateral offset, but is flat when the axle strut is used in a vehicle. This means that the two bearing areas of the axle strut are arranged in the same horizontal plane. The support winding of the axle strut can be applied during production in a plane without kink or bevel. The fibers of the FRP laminate are not deflected, thereby avoiding FRP laminate failure and forming a unidirectional FRP laminate. As a result, a load-based power absorption is possible.

Alternatively, at least one of the receptacles of the Lasteinleitelemente formed as a bore whose central axis has an angle to an axis which is perpendicular to the longitudinal axis of the axle strut. This angle is preferably an acute angle. This vertical axis intersects the central axis of the reception of the at least one load introduction element in one point. As a result, a lateral offset of the two bearing areas can be formed when the axle strut is used in a vehicle. In other words, the receptacle of the at least one Lasteinleitelements or both Lasteinleitelemente be formed as an oblique bore. The advantage of this is that a lateral offset of the two bearing areas of the axle strut is realized by this oblique bore or by these oblique holes. A lateral offset is a deviation of the extent of the Axle strut from a horizontal plane in which the longitudinal axis of the axle strut is arranged. In other words, the first bearing area of the axle strut lies in a different horizontal plane than the second bearing area of the axle strut when the axle strut is used in a vehicle. The two planes are parallel to each other and spaced apart. Due to the oblique bore or the oblique bores, the support winding of the axle strut does not have to be wound obliquely during production, but can be applied in a plane without kink or bevel. The fibers of the FRP laminate do not need to be deflected, thereby avoiding FRP laminate failure and forming a unidirectional FRP laminate. As a result, a load-based power absorption is possible.

In addition, it is possible by a change in the bore angle to represent different lateral offsets in a simple and cost-effective manner, for example, for the requirements of different vehicles or vehicle types, without the production process of the axle strut must be completely converted. Only the bore angle of the recording of Lasteinleitelements or the recordings of Lasteinleitelemente must be adjusted.

According to a further embodiment, both load-introducing elements are formed voltage-optimized. This means that with loads that act on the load-introducing element, there is a homogeneous course of the stress.

According to a further embodiment, the core profile is formed from a glass fiber reinforced plastic (GRP).

According to a further embodiment, the support winding of a carbon fiber reinforced plastic (CFRP) is formed.

According to a method according to the invention for producing an axle strut, first a core profile and a first and second load introduction element are inserted into an assembly tool, wherein the core profile is arranged spatially between the two load introduction elements. Subsequently, a longitudinal winding operation is performed, wherein the preassembled Achsstrebe is rotated about a transverse axis, so that a support winding along a longitudinal axis of the preassembled Achsstrebe is stored around the Lasteinleitelemente and the core profile around. As a result, the carrying winding surrounds the load-transfer elements and the core profile about the transverse axis at least partially radially and connects them along a longitudinal axis of the axle strut with each other. Subsequently, we supplemented the longitudinal winding process by a rotary winding process, wherein the preassembled Achsstrebe is additionally rotated about the longitudinal axis of the Achsstrebe, so that the support winding is at least partially deposited in helical form about the longitudinal axis of the preassembled Achsstrebe. Finally, the axle strut is removed from the assembly tool.

The longitudinal winding process around the transverse axis is preferably supplemented only occasionally by the rotational angle process of the preassembled axle strut, so that the carrying winding, which is arranged at least partially in helical form about the longitudinal axis of the preassembled axle strut, is formed only in the region of a shank of the preassembled axle strut.

• 1 eine schematische Perspektivdarstellung einer Achsstrebe nach einem ersten Ausführungsbeispiel,
• 2 eine schematische Perspektivdarstellung der Achsstrebe nach einem zweiten Ausführungsbeispiel,
• 3a eine schematische Schnittdarstellung eines Kernprofils der Achsstrebe gemäß 1 und 2 nach einer ersten Ausführungsform,
• 3b eine schematische Schnittdarstellung des Kernprofils gemäß einer zweiten Ausführungsform,
• 3c eine schematische Darstellung des Kernprofils gemäß einer dritten Ausführungsform, und
• 3d eine schematische Darstellung des Kernprofils gemäß einer vierten Ausführungsform.

In the following preferred embodiments of the invention will be explained in more detail with reference to the drawings. This shows

• 1 a schematic perspective view of an axle strut according to a first embodiment,
• 2 a schematic perspective view of the axle strut according to a second embodiment,
• 3a a schematic sectional view of a core profile of the axle strut according to 1 and 2 according to a first embodiment,
• 3b a schematic sectional view of the core profile according to a second embodiment,
• 3c a schematic representation of the core profile according to a third embodiment, and
• 3d a schematic representation of the core profile according to a fourth embodiment.

According to 1 and 2 is a schematic representation of an axle strut 1 shown according to one embodiment. The axle strut 1 has a shaft 2 and two storage areas 3a . 3b on. The axle strut 1 extends from a first storage area 3a over the shaft 2 to a second storage area 3b , where the axle strut 1 by means of two load introduction elements 7a . 7b , by means of a core profile 6 and by means of a carrying winding 4 is formed.

The first load introduction element 7a is at the first storage area 3a arranged. The second load introduction element 7b is at the second storage area 3b arranged. Each load introduction element 7a . 7b has a recording 9 on, which is cylindrical. This recording 9 serves to each one - not shown here - bearing, which may be formed, for example, as a rubber-metal bearing, and with the Achsstrebe 1 connect to. Each of these load introduction elements 7a . 7b also has two narrow ends running out to each other, the core profile 6 are facing. Consequently, the two load insertion elements 7a . 7b voltage-optimized trained with respect to a load application. Both load introduction elements 7a . 7b are here formed of aluminum. The pictures 9 the load introduction elements 7a . 7b are designed as a bore, both Lasteinleitelemente 7a . 7b are configured uniform to each other. Each hole of the shots 9 has a respective centerline M on, with the two centerlines M are arranged parallel to each other. Each load introduction element 7a . 7b is inside the axle strut 1 arranged such that the load-introducing element 7a . 7b an axial distance 10 to the core profile 6 having. The core profile 6 Thus, neither contacts the first load input element 7a nor the second Lasteinleitelement 7b and is decoupled from these.

The core profile 6 and the two load introduction elements 7a . 7b are along a longitudinal axis L the axle strut 1 arranged. The longitudinal axis L the axle strut 1 extends from the first storage area 3a over the shaft 2 to the second storage area 3b , perpendicular to the longitudinal axis L is a transverse axis T the axle strut 1 arranged. In the present case, the longitudinal axis intersect L and the transverse axis T in the focus of the core profile 6 or the axle strut 1 ,

The carrying winding 4 is radial about the transverse axis T the axle strut 1 wrapped and thus encloses the core profile 6 as well as the two load introduction elements 7 in a sub-area, the carrying winding 4 thus an outer circumferential surface of the axle strut 1 formed. The carrying winding 4 is formed from CFK. In addition, the carrying winding 4 continuous fiber reinforced.

Will when using the axle strut 1 in a vehicle, an axial load on the Lasteinleitelement 7 in the axle strut 1 initiated, this load is from the Lasteinleitelementen 7 flat to the support winding 4 forwarded. The carrying winding 4 absorbs the axial load.

In the 1 and 2 illustrated axle strut 1 is geometrically flat, that is, the first storage area 3a is arranged in the same plane as the second storage area 3b ,

For the production of the axle strut 1 become the core profile 6 as well as the two load introduction elements 7a . 7b in a - not shown here - mounting tool inserted so that a pre-assembled axle strut 1 positioned and fixed in the assembly tool. Thus, the core profile 6 spatially between the two load-transfer elements 7a . 7b arranged so that a body or the pre-assembled axle strut 1 is trained. In a first manufacturing step, a longitudinal winding process of the preassembled Achsstrebe 1 performed, with the preassembled axle strut 1 around a transverse axis T is rotated. This is the carrying winding 4 along the longitudinal axis L around the load introduction elements 7a . 7b and the core profile 6 applied around by an endless winding strand on the corresponding lateral surface of the core profile 6 or the respective load-introducing element 7a . 7b is filed. In other words, the preassembled axle strut 1 during the longitudinal winding process about the transverse axis T wrapped several times with the winding strands until the support winding 4 the load introduction elements 7a . 7b as well as the core profile 6 around the transverse axis T the axle strut 1 at least partially enclosing radially. The winding strands of the carrying winding 4 are thus initially along the longitudinal axis L oriented. The winding strand can be used to form the support winding 4 and have an adhesive for better adhesion. In particular, the winding strand is preimpregnated. The support winding produced during the longitudinal winding process 4 forms a lateral surface of the axle strut 1 out.

In a further manufacturing step, the longitudinal winding process is supplemented by a rotary winding process, wherein the preassembled axle strut 1 in addition to the longitudinal axis L the axle strut 1 is rotated to the supporting winding 4 at least partially in helical form about the longitudinal axis L the preassembled axle strut 1 store. In other words, during the manufacturing step, the longitudinal winding operation is combined with the rotary winding operation.

To produce an advantageous winding, the longitudinal winding process is about the transverse axis T only temporarily with the rotation angle of the preassembled axle strut 1 added or combined, so that the carrying winding 4 , which in helical form about the longitudinal axis L the preassembled axle strut 1 is arranged, in the region of a shaft 2 the preassembled axle strut 1 is trained. In other words, the winding strands are so on the side walls of the core profile 6 filed that the carrying winding 4 obliquely to the longitudinal axis L is arranged or helically around the shaft 2 from the first load-introducing element 3a towards the second load introduction element 3b around the axle strut 1 winds.

By only temporarily supplementing the longitudinal winding operation with the rotary winding operation, it is to be understood that the rotation angle operation is used at a time when, during the longitudinal winding operation, the laying of the winding strand in a transition region 12a . 12b between the respective load-introducing element 7a . 7b and the respective distal end of the core profile 6 he follows. In other words, the spin winding operation is performed only when the winding strand between the first and second transition areas 12a . 12b along the longitudinal axis L on the preassembled axle strut 1 is filed.

1 shows a schematic perspective view of the axle strut 1 with a first embodiment of the support winding 4 on the axle strut 1 , The carrying winding 4 encloses the load introduction elements 7a . 7b as well as the core profile 6 around a transverse axis T radially and connects them along the longitudinal axis L the axle strut 1 together. Furthermore encloses the support winding 4 the load introduction elements 7a . 7b as well as the core profile 6 around a longitudinal axis L the axle strut 1 in helical form, wherein the trained helical winding winding 4 forms a helical support structure.

At the time when, during the longitudinal winding process, that is, during rotation of the preassembled Achsstrebe 1 around the transverse axis T , the winding strand at the first transition area 12a is stored, the Drehwickelvorgang begins, that is, the simultaneous rotation of the preassembled Achsstrebe 1 around the transverse axis T and around the longitudinal axis L , The spin winding process ends when the winding bar at the second transition area 12b is filed. Thus, an optimal wrapping of the Lasteinleitelemente 7a . 7b respectively. Here is the carrying winding 4 in the area of load introduction elements 7a . 7b then exclusively parallel to the longitudinal axis L oriented. In other words, the suspension winding 4 in the area of the shaft 2 the axle strut 1 divided into a first wrap, parallel to the longitudinal axis L is oriented and a second wrap, which is in helical shape about the longitudinal axis L , ie obliquely to the longitudinal axis L is arranged. Both wraps together form the support winding 4 out. In the present case encloses the at least partially arranged in helical support winding 4 the axle strut 1 in the area of the shaft 2 around 180 °. That is, the ratio of the winding speed of the longitudinal winding operation and the winding speed of the rotary winding operation has been selected such that upon rotation of the axle strut 1 around the transverse axis T 180 ° rotation of the axle strut 1 around the longitudinal axis L is also done by 180 °. The ratio of the winding speeds of the rotary or longitudinal winding operation is thus 1: 1.

In 2 is a second embodiment of the support winding 4 on the axle strut 1 shown. The difference to the axle strut 1 with the carrying winding 4 out 1 is that the axle strut 1 in this case 1.5 times of the carrying winding 4 is enclosed. In other words, the ratio of the winding speed of the longitudinal winding operation and the winding speed of the rotary winding operation is selected such that a rotation of the axle strut 1 around the transverse axis T 180 ° (longitudinal winding) with simultaneous rotation of the axle strut 1 around the longitudinal axis L (Rotary winding) is done by more 540 °, so that the carrying winding 4 in helical form around the shaft 2 the axle strut 1 winds. As a result, in particular, the transition areas 12a . 12b more compact from the carrying winding 4 enclosed, that is the carrying capacity of the axle strut 1 is increased and a detachment of the support winding 4 from the load introduction elements 7a . 7b due to occurring tensile forces is prevented.

The 3a to 3d show a respective schematic sectional view of the core profile 6 the axle strut 1 in the area of the shaft 2 in different embodiments. The core profile is shown in each case 6 in cross-section, which is formed from a fiberglass and after 1 and 2 a part of the shaft 2 the axle strut 1 formed. The core profile 6 This case has a square square tube cross-section with rounded corners. Furthermore, the core profile 6 On all four side surfaces on a convex outer geometry, to which the support winding 4 clings to a corresponding convex geometry. The convex shaped winding 4 as well as the longitudinal axis L the axle strut 1 are exemplary in 3a shown. The core profile 6 serves in particular to the winding strands of the supporting winding 4 Coupling with each other to increase kink stiffness.

Out 3b shows that within the square square tube cross section a connecting strut 8th is arranged substantially centrally. 3c shows that within the core profile 6 two connecting struts 8th are arranged, which are formed substantially perpendicular to each other and in the center of gravity of the core profile 6 that is in the longitudinal axis L to cut. The connecting struts 8th are particularly intended to provide a lateral load capacity of the core profile 6 to increase. Alternatively shows 3d in a further embodiment that within the core profile 6 a foam material 5 is arranged, on the one hand to increase a Quertragfähigkeit and on the other hand, a collapse of the core profile 6 under the high pressure that occurs when curing the axle strut 1 for example, prevails in a press to prevent. The core profile 6 can thus withstand high external pressures.

The examples shown here are only examples. For example, can be adjusted on the ratio of the winding speed between the longitudinal winding and the rotary winding an arbitrary angle of the coil-shaped support winding. In other words, in a longitudinal winding process by 180 °, a simultaneous rotation angle of more than 540 ° take place, so that, as needed, a compact formed in helical support winding 4 in the area of the shaft 2 is trained to the supporting winding 4 To assist in the load application area in the occurrence of tensile forces and a detachment of the supporting winding 4 from the load introduction elements 7a . 7b to prevent.

Of course, the shaft length of the axle strands is variable. In other words, the axle strut 1 be made longer or shorter, depending on how long the core profile 6 is. Furthermore, the angle that the central axes of the recordings of the load-transfer elements to a vertical axis have variable, that is, depending on the vehicle type, this angle may be formed differently, so that a different lateral offset can be achieved.

LIST OF REFERENCE NUMBERS

1

Torque rod

2

shaft

3a, 3b

storage area

4

supporting winding

5

foam filling

6

apex

7a, 7b

Lasteinleitelement

8th

connecting strut

9

admission

10

distance

11

wrapping

12a, 12b

Transition area

L

longitudinal axis

M

central axis

T

transverse axis

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 (14)

Axle strut (1) for a vehicle, comprising a shaft (2) and a first and second bearing region (3a, 3b), wherein the axle strut (1) comprises - a supporting winding (4) consisting of a plurality of winding strands, - a core profile ( 6) - a first and second Lasteinleitelement (7a, 7b), wherein - the core profile (6) spatially between the two Lasteinleitelementen (7a, 7b) is arranged - the support winding (4) and the core profile (6) are formed from fiber-plastic composite material in that - the first load introduction element (7a) is arranged on the first bearing region (3a) and the second load introduction element (7b) on the second bearing region (3b), and - the support winding (4) is the load introduction elements (7a, 7b) and the core profile ( 6) about a transverse axis (T) at least partially enclosing radially and along a longitudinal axis (L) of the axle strut (1) interconnected, characterized in that the supporting winding (4) along the longitudinal axis (L) of the axle strut (1) at least partially in We Bundle is arranged on the two load-insertion elements (7a, 7b) and the core profile (6). Axle strut (1) to Claim 1 , characterized in that the at least partially arranged in helical form supporting winding (4) in the region of the shank (2) of the axle strut (1) is formed. Axle strut (1) according to one of the preceding claims, characterized in that the at least partially arranged in helical form supporting winding (4) surrounds the axle strut (1) in the region of the shaft (2) at least 180 °. Achsstrebe (1) according to any one of the preceding claims, characterized in that the core profile (6) at least partially has a convex outer geometry, wherein the supporting winding (4) in the region of the core profile (6) for at least partially convex outer geometry of the core profile (6). having corresponding convex shape. Axle strut (1) according to one of the preceding claims, characterized in that the core profile (6) has at least one stiffening strut (8). Axle strut (1) according to one of the preceding claims, characterized in that the core profile (6) has a foam filling (5). Axle strut (1) according to one of the preceding claims, characterized in that the core profile (6) couples the winding strands of the supporting winding (4) with each other. Axle strut (1) according to one of the preceding claims, characterized in that the Lasteinleitelemente (7a, 7b) are formed of a metal. Achsstrebe (1) according to any one of the preceding claims, characterized in that both receptacles (9) of the Lasteinleitelemente (7a, 7b) are formed as a bore whose central axis (M) is perpendicular to the longitudinal axis (L) of the axle strut (1). Axle strut (1) according to one of the preceding claims, characterized in that both Lasteinleitelemente (7a, 7b) are formed voltage optimized. Axle strut (1) according to one of the preceding claims, characterized in that the core profile (6) is formed from a glass fiber reinforced plastic. Axle strut (1) according to one of the preceding claims, characterized in that the supporting winding (4) is formed from a carbon fiber reinforced plastic. Method for producing an axle strut (1) according to one of Claims 1 to 12 comprising the following method steps: inserting a core profile (6) and a first and second load introduction element (7a, 7b) into an assembly tool, the core profile (6) being arranged spatially between the two load introduction elements (7a, 7b); - Performing a longitudinal winding operation, wherein the preassembled Achsstrebe (1) is rotated about a transverse axis (T), so that a support winding (4) along a longitudinal axis (L) of the preassembled Achsstrebe (1) to the Lasteinleitelemente (7a, 7b) and the core profile (6) is stored around; - complementing the longitudinal winding process by a rotary winding operation, wherein the preassembled axle strut (1) is additionally rotated about the longitudinal axis (L) of the axle strut (1), so that the support winding (4) at least partially in helical form about the longitudinal axis (L) of the preassembled Achsstrebe ( 1) is stored; and - removing the axle strut (1) from the assembly tool. Method according to Claim 13 , characterized in that the longitudinal winding process about the transverse axis (T) is only temporarily supplemented by the rotation angle process of the preassembled axle strut (1), so that the support winding (4), which at least partially in helical form about the longitudinal axis (L) of the preassembled Achsstrebe ( 1) arranged is formed, only in the region of a shank (2) of the preassembled Achsstrebe (1).

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