Body Structure for a Motor Vehicle

Abstract

A body structure for a motor vehicle includes two inner sills having an undulating cross section, a floor panel arranged in the transverse direction of the vehicle between the inner sills, and two funnel-shaped force-introducing elements which are connected in respective front sill regions to the inner sills and widen in a funnel-shaped manner transversely with respect to the longitudinal direction of the vehicle and, behind respective front wheelhouse regions, are supported on the rear side by their respective widened end region on a bulkhead of the body structure. A motor vehicle includes a body structure of this kind.

Claims

1-10. (canceled)

11. A body structure for a motor vehicle, comprising: two inner sills having an undulating cross section; a floor panel arranged in a transverse direction of the vehicle between the two inner sills; two funnel-shaped force introduction elements which are connected in respective front sill regions to the two inner sills and widen in a funnel-shaped manner transversely with respect to a longitudinal direction of the vehicle and, behind respective front wheelhouse regions, are supported on a rear side by their respective widened end region on a bulkhead of the body structure.

12. The body structure according to claim 11, wherein the two inner sills have w-shaped cross sections.

13. The body structure according to claim 11, wherein the funnel-shaped force introduction elements widen in the transverse direction and/or in a vertical direction of the vehicle.

14. The body structure according to claim 11, further comprising: two outer sills, each of which, in the transverse direction, is disposed on an external side on a respective inner sill.

15. The body structure according to claim 11, further comprising: a continuous cross member which, behind the bulkhead in a longitudinal direction, is disposed on the bulkhead.

16. The body structure according to claim 15, wherein respective cross member longitudinal ends of the continuous cross member are disposed behind the front wheelhouse regions in the longitudinal direction of the vehicle, and said respective cross member longitudinal ends are welded so as to overlap on the bulkhead.

17. The body structure according to claim 15, wherein the cross member is disposed above the funnel-shaped force introduction elements.

18. The body structure according to claim 15, wherein the cross member is disposed in front of respective A-pillars in the vehicle longitudinal direction.

19. The body structure according to claim 11, wherein the funnel-shaped force introduction elements are connected to the front sill regions on respective upper sides and insides.

20. A motor vehicle comprising a body structure according to claim 11.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 is a perspective view of a partially illustrated body structure of a motor vehicle, which has two inner sills having a w-shaped cross section;

[0026] FIG. 2 is a cross-sectional view of part of the body structure, wherein one of the two inner sills having the w-shaped cross section can be seen, an outer sill being disposed on the external side thereof;

[0027] FIG. 3 is a perspective view of part of the body structure, wherein a funnel-shaped force introduction element which is connected to a front sill region of one of the two inner sills having the w-shaped cross section can be seen;

[0028] FIG. 4 is a further perspective view of part of the body structure, wherein the funnel-shaped force introduction element which could be previously seen is shown from another perspective;

[0029] FIG. 5 is a plan view onto part of the body structure, wherein the funnel-shaped force introduction element can inter alia be seen again; and

[0030] FIG. 6 is a further perspective view of part of the body structure, wherein the funnel-shaped force introduction element is not illustrated.

[0031] Identical and functionally equivalent elements are provided with the same reference signs in the figures.

DETAILED DESCRIPTION OF THE DRAWINGS

[0032] A body structure 10 for a motor vehicle is partially shown in a perspective view in FIG. 1. The body structure 10 has two inner sills 12 which have in each case a w-shaped cross section. In terms of the vehicle transverse direction, a floor panel 14 is disposed between the inner sills 12. The body structure 10 furthermore comprises two funnel-shaped force introduction elements 16 which, in respective front sill regions 18, are connected to the inner sills 12.

[0033] The funnel-shaped force introduction elements 16 widen transversely to the vehicle longitudinal direction, in the case shown here widen in a funnel-shaped manner both in the vehicle transverse direction as well as in the vehicle vertical direction. Respective widened end regions 20 of the funnel-shaped force introduction elements 16 are disposed behind respective front wheelhouse regions 22 and are supported on the rear side on a bulkhead 24 of the body structure 10.

[0034] The widened end regions 20 of the funnel-shaped force introduction elements 16 in the vehicle longitudinal direction here are disposed in front of respective A-pillars 26. As a result of the funnel shape of the funnel-shaped force introduction elements 16, the latter can ensure in particular in frontal crash events, even in the case of dissimilar rim sizes or wheel sizes, that corresponding forces can be absorbed and reliably transmitted to the inner sills 12 in the case of most dissimilar wheel impact points. As a result of the w-shaped cross section, the inner sills 12 have correspondingly many edges that run in particular in a straight manner in the vehicle longitudinal direction and provide correspondingly many and stable load paths in the vehicle longitudinal direction.

[0035] The body structure 10 furthermore comprises a continuous cross member 28 which, in the vehicle longitudinal direction behind the bulkhead 24, is disposed on the latter. Respective cross member longitudinal ends 30 of the cross member 28 in the vehicle longitudinal direction are disposed behind the front wheelhouse regions 22 and overlap the latter on the rear side. The cross member longitudinal ends 30, like the entire remaining cross member 28, can be welded to the bulkhead 24. Since the cross member 28 runs continuously in the vehicle transverse direction, thus is free of interruptions, the cross member 28 can particularly well stabilize the body structure 10. As can be seen, the cross member 28 is disposed above the funnel-shaped force introduction elements 16, wherein the widened end regions 20 are disposed directly below the cross member 28. The funnel-shaped force introduction elements 16 thus widen in the vehicle vertical direction to the extent that the funnel-shaped force introduction elements 16 in the region of the bulkhead 24 are disposed directly below the cross member 28.

[0036] A fragment of the body structure 10 is shown in a partially sectional view in FIG. 2. In terms of the forward travel direction of the respective motor vehicle, the left inner sill 12 can be seen here. The already mentioned w-shaped cross-sectional design embodiment of the inner sills 12 can presently be readily seen once again. The body structure 10 moreover has two outer sills 32 which in the vehicle transverse direction are disposed on the external side on the inner sills 12. The inner sills 12 and the outer sills 32 represent correspondingly many longitudinal load paths such that the body structure 10 is very stable above all in frontal crash load events.

[0037] A further fragment of the body structure 10 is partially shown in a perspective view in FIG. 3. According to the present perspective, the view is onto the front sill region 18 of the left inner sill 12. One of the two funnel-shaped force introduction elements 16 and how the latter widens in a funnel-shaped manner toward the front in the vehicle longitudinal direction can presently be readily seen once again. The funnel-shaped force introduction element 16 shown here, on an upper side 34 and on an inside 36, is connected to the front sill region 18 shown here. This can be performed by welding, for example.

[0038] It can be readily seen here once again that the cross member 28 is disposed above the funnel-shaped force introduction elements 16, wherein the latter in the vehicle vertical direction widen so far, or so intensely, that the funnel-shaped force introduction elements 16 bear on the cross member 28 directly below the latter. It can be readily seen in this view that the funnel-shaped force introduction elements 16 widen in the vehicle transverse direction as well as in the vehicle vertical direction such that a relatively large region behind the respective front wheelhouse regions 22 can be covered by the widened end regions 20 of the funnel-shaped force introduction elements 16. In particular in the event of a frontal crash, forces that arise can thus be absorbed and transmitted to the inner sills 12 by the funnel-shaped force introduction elements 16, even in the case of most dissimilar rim sizes or wheel sizes.

[0039] A similar fragment, or region, of the body structure 10 to that in FIG. 3 is shown in FIG. 4, but from another perspective. The shape of the funnel-shaped force introduction elements 16 can be readily seen once again, which are attached to the respective front sill regions 18 of the inner sills 12 and in the vehicle transverse direction and vehicle vertical direction successively widen up to their widened end regions 20 by way of which the funnel-shaped force introduction elements 16 are supported on the bulkhead 24 of the body structure 10.

[0040] A similar region of the body structure 10 to those in FIGS. 3 and 4 is shown in a plan view in FIG. 5. It can be readily seen once again here that the funnel-shaped force introduction elements 16 are disposed in the front region of the inner sills 12 and extend to below the cross member 28, wherein the funnel-shaped force introduction elements 16 by way of the widened end regions 20 thereof are supported on the bulkhead 24 not referred to in more detail here.

[0041] The body structure 10 is again shown in fragments in a perspective view in FIG. 6, wherein the left inner sill 12 and the left outer sill 32 can inter alia be seen again. The left funnel-shaped force introduction element 16 is not illustrated in the present illustration. It can be seen here that the inner sills 12 in the vehicle longitudinal direction end in front of the bulkhead 24 so as to be somewhat spaced apart from the latter. In this way, there is no direct transmission of force from the bulkhead 24, and in particular from the wheelhouse regions 22, to the inner sills 12, in particular in frontal crash events.

[0042] Instead, the funnel-shaped force introduction elements 16, not shown here, by way of the widened end regions 20 thereof absorb corresponding forces and then transmit the latter to the inner sills 12. In the region of respective structure nodes in which the bulkhead 24 is connected to the A-pillar 26 and to the sills 12, 32, the body structure 10 can ensure a particularly high level of stability in particular in frontal crash load events. This is ensured by the inner sills 12 having the w-shaped cross sections thereof, on the one hand, and by the funnel-shaped force introduction elements 16, on the other hand. In this way, regions and components disposed behind the bulkhead 24 can be very well preserved in relation to deformation and thus in relation to damage, in particular in frontal crash load events.

TABLE-US-00001 List of reference signs 10 Body structure 12 Inner sills 14 Floor panel 16 Funnel-shaped force introduction elements 18 Front sill regions of the inner sills 20 Widened end regions of the funnel-shaped force introduction elements 22 Front wheelhouse regions 24 Bulkhead 26 A-pillars 28 Cross member 30 Cross member longitudinal ends 32 Outer sills 34 Upper sides of the front sill regions 36 Insides of the front sill regions