Axle carrier for a motor vehicle

Abstract

Axle carrier (1) for a motor vehicle, comprising two longitudinal members (2, 3) and at least one cross member (4), wherein the longitudinal members (2, 3) are formed at least partially as hollow cast castings and the at least one cross member (4) is formed at least partially as a two-part upper and lower sheet metal shell (4a, 4b) and the lower sheet metal shell (4b) is screwed to the longitudinal members (2, 3) with a screw (6), characterized by the fact that the upper sheet metal shell (4a) is connected to the longitudinal beams (2, 3) by means of a weld (5) and a stabilizer tube (7) with rubber bearings (8) and at least one additional support screw (19) between the upper and lower sheet metal shells (4a, 4b) are provided to secure the stabilizer tube (7) in the direction of travel.

Description

[0001] The invention relates to an axle carrier for a front axle in a hybrid design made of sheet metal and castings, in particular an axle carrier with two longitudinal members and at least one cross member, wherein the longitudinal members are designed at least partially as hollow cast castings and the at least one cross member is made of sheet metal.

[0002] It is known to construct an axle carrier, consisting of two longitudinal beams and at least one crossbeam, from two different types of material. These are usually sheet metal components and cast components, as shown, for example, in DE 102011 111 708 A1.

[0003] DE 10 2010 020 304 A1 discloses an integral carrier of a passenger car with longitudinal members made of cast components, which are formed from hollow profiles in certain sections, and a cross member made of sheet metal.

[0004] DE 199 09 945 C1 and CN 207 712 148 U each disclose a motor vehicle comprising an axle carrier with hollow cast longitudinal members and a cross member consisting of upper and lower sheet metal shells. According to the generic document CN 207 712 148 U, the lower sheet metal shell is furthermore bolted to the longitudinal members.

[0005] The present invention is therefore based on the objective of creating a lightweight axle carrier that is easy to mount and has good crash performance.

[0006] This task is solved, among other things, by ensuring that at least one crossbeam is designed as a double-shell structure, at least in sections, consisting of an upper and a lower sheet metal shell.

[0007] The upper and lower sheet metal shell refers to a device consisting of two different sheet metal components that are subsequently arranged together.

[0008] The advantages achieved with the invention consist in the fact that the two sheet metal shells reduce weight due to their recesses.

[0009] It is also advantageous that the ductile sheet metal material allows for high deformation in the event of a crash. Thanks to its double-shell construction, the sheet metal, like the cast parts, enables high bending moments and high stiffness with minimal material usage, thus also resulting in low weight.

[0010] According to the invention, the upper sheet metal shell is welded to the cast longitudinal beams. The lower sheet metal shell is bolted to the resulting assembly, thus allowing the sheet metal section to be opened, which offers advantages in terms of assembly.

[0011] Furthermore, a stabilizer tube is positioned between the two sheet metal shells, supported at each end by a rubber bushing. The rigid stabilizer tube is advantageously positioned as far back as possible in the direction of travel to allow for large deformation paths. The stabilizer tube runs diagonally on both sides outside the sheet metal shells towards the wheel suspension, where it connects to the vehicle body.

[0012] Preferably, the longitudinal control arm of the wheel suspension is arranged in the two-shell area consisting of a lower and upper sheet metal shell.

[0013] It is advantageous to provide an opening in the hollow cast part to allow a control arm to be bolted on vertically. This ensures optimal connection to the load-bearing structure.

[0014] The invention will now be explained in detail using an exemplary embodiment and with reference to the drawing. The drawing shows: Fig. 1. An overall view of the axle carrier Fig. 2 a sectional view of both the crossbeam and the longitudinal beam.

[0015] The Fig. 1 and Fig. Figures 2 show an axle carrier 1 in different views or details thereof.

[0016] The Fig. 1 and Fig. Figure 2 shows an axle carrier 1 comprising two longitudinal members 2, 3 and at least one cross member 4. The cross member 4, consisting of an upper and a lower sheet metal shell 4a, 4b, is connected to the longitudinal member 2, 3 by means of a weld 5 and is also bolted to it with a screw 6.

[0017] As it is in Fig. 1 and Fig. As can be seen in Figure 2, the crossmember has a stabilizer tube which is arranged between the lower and upper sheet metal shells 4a, 4b and is fixed at its side end by a rubber bearing 8. In the horizontal plane, the stabilizer tube 7 is held by a support screw 19. In addition, the drive bearings 9 are arranged on the side of the crossmember 4 facing away from the direction of travel.

[0018] The Fig. Figure 1 shows a cavity 10, 11 on each inner side of the longitudinal members 2, 3 for the assembly bearings 12, 13. On the outer side of the longitudinal members 2, 3 there is at least one opening 14, 15 for attaching a control arm 16.

[0019] The Fig. 1 and Fig. Figure 2 also shows a bearing recess between the upper and lower sheet metal shells 4a, 4b, in order to arrange a longitudinal control arm 18 fixed to the cross member 4 on the sheet metal shells 4a, 4b. Reference symbol: 1 axle carrier 2 longitudinal beams 3 longitudinal beams 4 crossbeams 4a upper sheet metal tray 4b lower sheet metal tray 5 weld seam 6 screw connection 7 Stabilizer tube 8 rubber bearings 9 drive bearings 10 Cavity 11 Cavity 12 aggregate bearings 13 aggregate bearings 14 Opening 15 Opening 16 wishbones 17 Bearing recess 18 trailing arms 19 Support screw

Claims

[1] Axle carrier (1) for a motor vehicle, comprising two longitudinal members (2, 3) and at least one cross member (4), wherein the longitudinal members (2, 3) are formed at least partially as hollow cast castings and the at least one cross member (4) is formed at least partially as a two-part upper and lower sheet metal shell (4a, 4b) and the lower sheet metal shell (4b) is screwed to the longitudinal members (2, 3) with a screw (6), characterized by , that the upper sheet metal shell (4a) is connected to the longitudinal beams (2, 3) by means of a weld (5) and a stabilizer tube (7) with rubber bearings (8) and at least one additional support screw (19) between the upper and lower sheet metal shells (4a, 4b) are provided to secure the stabilizer tube (7) in the direction of travel. [2] Axle carrier (1) according to claim 1, wherein at least one drive bearing (9) is arranged on a side of the cross member (4) facing away from the direction of travel (F). [3] Axle carrier (1) according to one of the preceding claims, characterized by , that in each of the longitudinal beams (2, 3) at least one cavity (10, 11) is provided for an aggregate bearing (12, 13). [4] Axle carrier (1) according to any of the preceding claims, characterized by , that at least one opening (14, 15) is provided in the longitudinal members (2, 3) for the arrangement of transverse control arms (16) on the longitudinal members (2, 3). [5] Axle carrier (1) according to any of the preceding claims, characterized by , that a bearing recess (17) is provided between the two sheet metal shells (4a, 4b) for the arrangement of a longitudinal control arm (18) on the cross member (4). [6] Vehicle comprising at least one axle carrier (1) according to any of the preceding claims.

Images