Chassis Subframe of a Two-Track Vehicle

Abstract

A chassis subframe of a two-track vehicle, includes: at least two tubular longitudinal members, which are oriented at least approximately in a vehicle longitudinal direction, wherein the at least two longitudinal members each comprise an upper shell and a lower shell, wherein the upper shell and the lower shell are produced in a sheet-metal deformation process and are joined by way of a joining process to form a respective one of the tubular longitudinal members, at least one transverse member, which is oriented at least approximately in a vehicle transverse direction and which connects the two longitudinal members to one another, at least one attachment lug, wherein at least one wheel-controlling link for connecting a respective wheel of the vehicle to the chassis subframe is attachable to in each case at least one attachment lug on a respective longitudinal member. The lower shell and/or the upper shell of a respective longitudinal member comprises at least one support plate produced in a sheet-metal deformation process, which support plate is arranged at least approximately in a horizontal plane and so as to project from the longitudinal member at least approximately in a vehicle transverse direction, wherein at least a part of the attachment lug is attached to the support plate.

Claims

1.-10. (canceled)

11. A chassis subframe of a two-track vehicle, comprising: at least two tubular longitudinal beams which are oriented at least approximately in a vehicle longitudinal direction; wherein the at least two longitudinal beams in each case comprise an upper shell and a lower shell, and the upper shell and the lower shell are produced by a sheet metal forming method and are joined by way of a joining method; at least one transverse beam which is oriented at least approximately in a vehicle transverse direction and connects the two longitudinal beams to one another; wherein the lower shell and/or the upper shell of a respective longitudinal beam comprises a support plate which is produced by the sheet metal forming method, wherein the support plate is arranged so as to project from the respective longitudinal beam at least approximately in a horizontal plane and at least approximately in the vehicle transverse direction; and at least one part of a respective attaching lug attached to the support plate, wherein at least one wheel controlling link is attachable by way of the respective attaching lug for connecting a wheel of the vehicle to the chassis subframe.

12. The chassis subframe according to claim 11, wherein the at least one part of the respective attaching lug is welded to the support plate.

13. The chassis subframe according to claim 11, comprising: two attaching lugs, the two attaching lugs being spaced apart from one another in the vehicle longitudinal direction and projecting in each case from one longitudinal beam at least approximately in the vehicle transverse direction, whereby a vehicle-side end of the controlling link is arrangeable between the two attaching lugs.

14. The chassis subframe according to claim 11, wherein the attaching lug comprises at least two wing elements which are spaced apart from one another in the vehicle longitudinal direction and are oriented at least approximately in the vehicle transverse direction, whereby a vehicle-side end of the controlling link is arrangeable between the two wing elements.

15. The chassis subframe according to claim 12, wherein a weld seam, by which the at least one part of the respective attaching lug is attached to the support plate, runs at least approximately in the vehicle transverse direction.

16. The chassis subframe according to claim 13, wherein weld seams, by which the at least one part of the two attaching lugs are attached to the support plate, run at least approximately in the vehicle transverse direction.

17. The chassis subframe according to claim 14, wherein a weld seam, by which the at least one part of the attaching lug is attached to the support plate, runs at least approximately in the vehicle transverse direction.

18. The chassis subframe according to claim 12, wherein the at least one part of the attaching lug, which at least one part is welded to the support plate, lies on the support plate.

19. The chassis subframe according to claim 11, wherein the support plate comprises a recess, in which a link is arranged.

20. The chassis subframe according to claim 11, wherein at least one further part of the attaching lug is connected to the upper shell and/or lower shell of the longitudinal beam via a weld seam which runs in the vehicle transverse direction.

21. A chassis subframe of a two-track vehicle, comprising: at least two tubular longitudinal beams which are oriented at least approximately in a vehicle longitudinal direction; a transverse beam which is oriented at least approximately in a vehicle transverse direction and connects the two longitudinal beams to one another, wherein the transverse beam comprises an upper shell and a lower shell produced by a sheet metal forming method and are joined by way of a joining method, wherein the lower shell and/or the upper shell of the transverse beam comprises a support plate which is produced by the sheet metal forming method, wherein the support plate is arranged so as to project from the transverse beam at least approximately in a horizontal plane and at least approximately in a vehicle longitudinal direction; and at least one part of an attaching lug is attached to the support plate, wherein a wheel controlling link, a tension strut and/or a compression strut is attachable by way of the attaching lug to the transverse beam for connecting a wheel, and/or a drive unit of the vehicle to the chassis subframe.

22. A vehicle comprising at least one chassis subframe according to claim 11.

23. A vehicle comprising at least one chassis subframe according to claim 21.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG. 1 shows a chassis subframe in a three-dimensional view from below.

[0051] FIG. 2 shows an enlargement of the part of the chassis subframe from FIG. 1, in which exemplary link lugs and an exemplary support plate are indicated in more detail, where FIG. 2 shows a three-dimensional view from the side, front and above.

[0052] FIG. 3 shows an enlargement of the part of the chassis subframe from FIG. 1, where FIG. 3 shows a three-dimension view from the side, front and below.

DETAILED DESCRIPTION OF THE DRAWINGS

[0053] FIG. 2 and FIG. 3 in each case show (as viewed in the installed state in the vehicle) the left-hand vehicle side. It is provided, however, that the right-hand vehicle side has the same embodiment, and is therefore of substantially symmetrical configuration with respect to the left-hand vehicle side about a vehicle center axis.

[0054] An exemplary chassis subframe of one axle of a vehicle can be seen in FIG. 1. The chassis subframe has two longitudinal beams 1 (as viewed in the installed state in the vehicle) which are oriented substantially in the vehicle longitudinal direction X. Two transverse beams 5 in each case connect the two longitudinal beams 1 to one another and are oriented at least substantially in the vehicle transverse direction Y in the installed state in the vehicle.

[0055] As has already been stated, the chassis subframe or the longitudinal beams 1 of the chassis subframe are of substantially symmetrical configuration with respect to one another in relation to the vehicle center longitudinal axis in the installed state in the vehicle. All explanations made on the basis of one longitudinal beam 1 therefore also apply in mirror-inverted form to the other longitudinal beam 1.

[0056] It is provided (but cannot be seen in the figures) that a respective longitudinal beam is assembled in each case from an upper shell 1.1 and a lower shell 1.2 to form a hollow, tubular longitudinal beam. Here, the two shells are preferably welded to one another. Here, the two shells are produced by a sheet metal forming method.

[0057] The longitudinal beams in each case comprise two attaching lugs 3, by way of which a respective wheel controlling link (not depicted; in particular, a transverse link) connects a vehicle wheel (likewise not depicted) to the chassis subframe.

[0058] The attaching lugs 3 are arranged such that they are oriented or project from the longitudinal beam 1 in each case substantially in the vehicle transverse direction Y. A link can then be fastened between the two lugs 3 by means of a screw connection, for example.

[0059] Furthermore, a support plate 2 can be seen on each longitudinal beam 1 in FIG. 1. Here, the support plate 2 is produced in each case by the sheet metal forming method together with one of the two shells 1.1, 1.2 as a common component. In this specific case, the support plate 2 is produced with the lower shell 1.2 of the longitudinal beam 1.

[0060] The support plate 2 is of at least approximately flat and planar configuration, and is arranged so as to project from the longitudinal beam 1 at least substantially in the vehicle transverse direction Y in a horizontal plane.

[0061] As can be seen, in particular, in the detailed views in FIGS. 2 and 3, the attaching lugs 3 are connected in each case to the support plate 2. Furthermore, the attaching lugs 3 are connected to the longitudinal beam 1. In this specific case, these connections are realized by a welded connection which takes place by way of a plurality of weld seams 4.1, 4.2, 4.3, 4.4, 4.5. The weld seams are indicated diagrammatically by way of black bars.

[0062] It is provided here, in particular, that a respective attaching lug 3 (as can be seen in FIG. 3) is connected to the support plate 2 via weld seams 4.1, 4.3 which run substantially in the vehicle transverse direction Y.

[0063] It is provided, furthermore, that at least one attaching lug 3 is attached to the flat surface (oriented substantially in a horizontal plane) of the upper shell 1.1 of the longitudinal beam 1. Here, this attachment takes place by way of a weld seam 4.4 which is oriented at least approximately in the vehicle transverse direction Y. As has already been stated, the orientation of the weld seams in the vehicle transverse direction and a configuration of the weld seams on a surface of the shells which extends as far as possible in the horizontal plane enable an optimized force flow during the introduction of the link forces and an increased service life of the link attachment and the chassis subframe itself.

[0064] In addition to the indicated weld seams, the lugs 3 can be connected to the longitudinal beam by way of further weld seams 4.5, 4.2.

[0065] The support plate 2 serves, in particular, as a reinforcement for the link attachment. The wheel controlling link is then preferably screwed to the two attaching lugs 3 in the vehicle longitudinal direction X. To this end, furthermore, a recess is provided in the support plate 2, into which recess a link can be guided.