초록 ▼

A transverse bridge for reinforcing a tunnel region of a floor structure of a motor vehicle is fastened to the floor structure and extends between transverse seat struts. The transverse bridge contains two obliquely extending lateral supporting arms and an upper bridge element connecting the two sup

A transverse bridge for reinforcing a tunnel region of a floor structure of a motor vehicle is fastened to the floor structure and extends between transverse seat struts. The transverse bridge contains two obliquely extending lateral supporting arms and an upper bridge element connecting the two supporting arms. The transverse bridge contains, in the region of the upper bridge element, on its two longitudinal sides, vertically oriented walls which extend at a small lateral distance from parallel wall portions of the tunnel side walls. During a side impact, the vertical wall portions of the tunnel side walls initially coming into direct contact with the vertically oriented walls of the bridge element, and due to this blocking, the greatest portion of the forces occurring from the side impact are transmitted beyond the tunnel region as pure compressive forces onto the side of the floor structure opposing the impact side.

대표청구항 ▼

The invention claimed is: 1. A transverse bridge for reinforcing a tunnel region of a floor structure for a motor vehicle, in an event of a side impact and during dynamic drive operations, the transverse bridge releaseably fastened to the floor structure and disposed between two transverse seat str

The invention claimed is: 1. A transverse bridge for reinforcing a tunnel region of a floor structure for a motor vehicle, in an event of a side impact and during dynamic drive operations, the transverse bridge releaseably fastened to the floor structure and disposed between two transverse seat struts disposed spaced apart from one another in a transverse direction of the motor vehicle, the transverse bridge fastened to an underside of the two transverse seat struts, the transverse bridge comprising: two obliquely extending lateral supporting arms; and an upper bridge element connecting said two obliquely extending lateral supporting arms, said upper bridge element having an upper edge extending approximately level with an upper edge of the two transverse seat struts, said upper bridge element having two longitudinal sides defining vertically oriented walls connected to said two obliquely extending lateral supporting arms, said vertically oriented walls each extending at a small distance from parallel wall portions of tunnel side walls of the tunnel region, and in the event of the side impact, the parallel wall portions of the tunnel side walls initially come into direct contact with said vertically oriented walls of said upper bridge element, as a result of blocking by the parallel wall portions, a greatest portion of forces occurring in the event of the side impact being transmitted beyond the tunnel region as pure compressive forces onto a side of the floor structure opposing an impact side. 2. The transverse bridge according to claim 1, further comprising two plate-shaped fastening portions disposed in a lower region and spaced apart from one another, and as seen in the transverse direction, are aligned approximately horizontally and bear against the underside of the floor structure in a region of the transverse seat struts. 3. The transverse bridge according to claim 2, further comprising at least two screw fastenings disposed on each said two plate-shaped fastening portions and disposed spaced apart from one another. 4. The transverse bridge according to claim 3, wherein said at least two screw fastenings of each of said two plate-shaped fastening portions are disposed offset to one another in longitudinal, transverse and vertical directions of the motor vehicle. 5. The transverse bridge according to claim 3, wherein: each of said two plate-shaped fastening portions have openings formed therein, said openings are transversely extending slots; and each of said screw fastenings has fastening screws extending in a vertical direction, pass through said openings for securing the transverse bridge. 6. The transverse bridge according to claim 1, wherein the transverse bridge is a ribbed cast part made of a light metal alloy. 7. The transverse bridge according to claim 3, further comprising a plurality of vertical main ribs extending transversely to a longitudinal axis of the motor vehicle for reinforcing the transverse bridge, said vertical main ribs extending from said upper bridge element. 8. The transverse bridge according to claim 7, further comprising vertical ribs and two adjacently disposed ones of said vertical main ribs in a region of each of said fastening portions are connected to one another via at least one of said vertical ribs extending in a longitudinal direction of the motor vehicle. 9. The transverse bridge according to claim 1, wherein said upper bridge element has an upper limit with a shape selected from the group consisting of straight shapes, angled shapes and curved shapes. 10. The transverse bridge according to claim 1, wherein when the transverse bridge is installed, lateral gap regions between the transverse bridge and the tunnel region, seen in the transverse direction of the vehicle, are smaller in a region of said upper bridge element than in a region of said two obliquely extending supporting arms. 11. The transverse bridge according to claim 1, wherein said two obliquely extending lateral supporting arms and said upper bridge element forming the transverse bridge are configured as a ribbed cast part made of a light metal alloy. 12. A floor structure for a motor vehicle, the floor structure comprising: a tunnel region having tunnel side walls defining wall portions; two transverse seat struts disposed spaced apart from one another in a transverse direction of the motor vehicle and each having an underside and an upper edge; a transverse bridge reinforcing said tunnel region and disposed between said two transverse seat struts, said transverse bridge fastened to said underside of said two transverse seat struts, the transverse bridge including: two obliquely extending lateral supporting arms; and an upper bridge element connecting said two obliquely extending lateral supporting arms, said upper bridge element having an upper edge extending approximately level with said upper edge of said two transverse seat struts, said upper bridge element having two longitudinal sides defining vertically oriented walls connected to said two obliquely extending lateral supporting arms, said vertically oriented walls each extending at a small distance from parallel said wall portions of said tunnel side walls of said tunnel region, and in an event of a side impact, said wall portions of said tunnel side walls initially come into direct contact with said vertically oriented walls of said upper bridge element, as a result of blocking by said wall portions, a greatest portion of forces occurring in the event of the side impact being transmitted beyond said tunnel region as pure compressive forces onto a side of the floor structure opposing an impact side.