US-20260125020-A1 - CRASH MANAGEMENT SYSTEM FOR A MOTOR VEHICLE

US20260125020A1US 20260125020 A1US20260125020 A1US 20260125020A1US-20260125020-A1

Abstract

The invention relates to a crash management system ( 100 ) for a motor vehicle, the crash management system ( 100 ) comprising a crossbeam ( 10 ) extending essentially along a transverse direction (Y), the crossbeam ( 10 ) having two crash boxes ( 12 ) arranged at a distance from one another, the crossbeam ( 10 ) being fixable to a vehicle structure by means of the two crash boxes ( 12 ), and the crash management system ( 100 ) comprising a receiving element ( 30 ; 30 a ; 30 b ) for a towing lug protruding with a first subsection ( 31 ; 31 a ; 31 b ) into the cross section of the crash box ( 12 ), the receiving element ( 30 ; 30 a ; 30 b ) having two flange-like extensions ( 36 ; 36 a ; 36 b ) on opposite sides, the extensions ( 36 ) overlapping with a front side ( 23 ) of the crash box ( 12 ) in the direction of a longitudinal axis ( 34 ) of the extensions ( 36 ; 36 a ; 36 b ).

Inventors

Dominik Jaekle

Assignees

CONSTELLIUM SINGEN GMBH

Dates

Publication Date: 20260507
Application Date: 20231019
Priority Date: 20221025

Claims (20)

1 . A crash management system ( 100 ) for a motor vehicle, the crash management system ( 100 ) comprising a crossbeam ( 10 ) extending essentially along a transverse direction (Y), the crossbeam ( 10 ) having two crash boxes ( 12 ) arranged at a distance from one another, the crossbeam ( 10 ) being fixable to a vehicle structure by means of the two crash boxes ( 12 ), and the crash management system ( 100 ) comprising a receiving element ( 30 ) for a towing lug protruding with a first subsection ( 31 ) into the cross section of the crash box ( 12 ), the receiving element ( 30 ) having two flange-like extensions ( 36 ) on opposite sides, the extensions ( 36 ) overlapping with a front side ( 23 ) of the crash box ( 12 ) in the direction of a longitudinal axis ( 34 ) of the extensions ( 36 ), and the extensions ( 36 ) being in contact with the crash box ( 12 ) on one side in a longitudinal direction ( 38 ) of the receiving element ( 30 ), characterized in that in the area of the extensions ( 36 ), the crash box ( 12 ) has recesses ( 42 ) which receive the extensions ( 36 ) in the longitudinal direction ( 38 ), that the crash box ( 12 ) directly contacts the crossbeam ( 10 ) on the side facing the crossbeam ( 10 ), and that the extensions ( 36 ) are in contact with the crossbeam ( 10 ) on the side facing away from the crash box ( 12 ).
2 . A crash management system ( 100 ) for a motor vehicle, the crash management system ( 100 ) comprising a crossbeam ( 10 ) extending essentially along a transverse direction (Y), the crossbeam ( 10 ) having two crash boxes ( 12 ) arranged at a distance from one another, the crossbeam ( 10 ) being fixable to a vehicle structure by means of the two crash boxes ( 12 ), and the crash management system ( 100 ) comprising a receiving element ( 30 a ; 30 b ) for a towing lug protruding with a first subsection ( 31 a ; 31 b ) into the cross section of the crash box ( 12 ), the receiving element ( 30 a ; 30 b ) having two flange-like extensions ( 36 a ; 36 b ) on opposite sides, the extensions ( 36 a ; 36 b ) overlapping with a front side ( 23 ) of the crash box ( 12 ) in the direction of a longitudinal axis ( 34 ) of the extensions ( 36 a ; 36 b ), and extensions ( 36 a ; 36 b ) being in contact with the crash box ( 12 ) on one side in a longitudinal direction ( 38 ) of the receiving element ( 30 a ; 30 b ), characterized in that in the area of the extensions ( 36 a ; 36 b ) the crash box ( 12 ) has recesses ( 42 a ), which receive the extensions ( 36 a ; 36 b ) in the longitudinal direction ( 38 ), that the crash box ( 12 ) directly contacts the crossbeam ( 10 ) on the side facing the crossbeam ( 10 ), and that the extensions ( 36 a ; 36 b ) contact a flange plate ( 22 ; 22 a ) of the crash box ( 12 ) on the side of the crash box ( 12 ) facing away from the crossbeam ( 10 ).
3 . The crash management system according to claim 2 , characterized in that the receiving element ( 30 b ) has a second subsection ( 37 b ) which protrudes into a passage opening ( 56 ) of the flange plate ( 22 b ) and which is preferably received in a positive manner in the passage opening ( 56 ).
4 . The crash management system according to claim 1 , characterized in that the recesses ( 42 ; 42 a ) are adapted to the cross sections of the extensions ( 36 ; 36 a ; 36 b ), the extensions ( 36 ; 36 a ; 36 b ) thus being received at least approximately in a positive manner in the recesses ( 42 ; 42 a ).
5 . The crash management system according to claim 1 , characterized in that the extensions ( 36 ) laterally protrude beyond the cross section of the crash box ( 12 ) in the area a front side ( 23 ) of the crash box ( 12 ) facing the extensions ( 36 ), or that the extensions ( 36 a ; 36 b ) protrude laterally beyond the cross section of the crash box ( 12 ) on the side facing the flange plate ( 22 ; 22 b ).
6 . The crash management system according to claim 1 , characterized in that the receiving element ( 30 ; 30 a ; 30 b ) has positioning means ( 44 ; 44 a ; 44 b ) for positioning the receiving element ( 30 ; 30 a ; 30 b ) in the cross section of the crash box ( 12 ).
7 . The crash management system according to claim 6 , characterized in that the positioning means ( 44 ; 44 a ; 44 b ) are formed as steps ( 46 ) or lips ( 48 ) formed on the extensions ( 36 ; 36 a ; 36 b ), the steps ( 46 ) or lips ( 48 ) being arranged within the cross section of the crash box ( 12 ) in contact with the crash box ( 12 ).
8 . The crash management system according to claim 1 , characterized in that on the side of the extensions ( 36 ) opposite the first subsection ( 31 ), the receiving element ( 30 ) has a second subsection ( 37 ) which protrudes through an opening in the crossbeam ( 10 ) into the cross section of the crossbeam ( 10 ).
9 . The crash management system according to claim 1 , characterized in that the receiving element ( 30 ; 30 a ; 30 b ) is made of aluminum or an aluminum alloy, is formed as extrusion component, and has a receiving section ( 40 ; 40 a ), which is formed by machining, for a towing lug in order to receive the towing lug.
10 . The crash management system according to claim 9 , characterized in that the receiving section ( 40 ; 40 a ) has a threaded section in order to fasten the towing lug directly to the receiving element ( 30 ; 30 a ; 30 b ).
11 . (canceled)
12 . The crash management system according to claim 1 , characterized in that at least the crash box ( 12 ) and the crossbeam ( 10 ) are connected to one another by means of a welded connection ( 24 ) having at least one weld ( 25 ).
13 . (canceled)
14 . The crash management system according to claim 2 , characterized in that the flange plate ( 22 ; 22 b ) is connected to the crash box ( 12 ) by means of at least one weld ( 25 a ), the at least one weld ( 25 a ) being additionally formed between the extensions ( 36 a ; 36 b ) of the receiving element ( 30 a ; 30 b ) and the crash box ( 12 ).
15 . The crash management system according to claim 2 , characterized in that the cross section of the receiving element ( 30 ; 30 a ; 30 b ) is rectangular, preferably square, in the area outside of the extensions ( 36 ; 36 a ; 36 b ).
16 . The crash management system according to claim 2 , characterized in that the recesses ( 42 ; 42 a ) are adapted to the cross sections of the extensions ( 36 ; 36 a ; 36 b ), the extensions ( 36 ; 36 a ; 36 b ) thus being received at least approximately in a positive manner in the recesses ( 42 ; 42 a ).
17 . The crash management system according to claim 2 , characterized in that the extensions ( 36 ) laterally protrude beyond the cross section of the crash box ( 12 ) in the area a front side ( 23 ) of the crash box ( 12 ) facing the extensions ( 36 ), or that the extensions ( 36 a ; 36 b ) protrude laterally beyond the cross section of the crash box ( 12 ) on the side facing the flange plate ( 22 ; 22 b ).
18 . The crash management system according to claim 2 , characterized in that the receiving element ( 30 ; 30 a ; 30 b ) has positioning means ( 44 ; 44 a ; 44 b ) for positioning the receiving element ( 30 ; 30 a ; 30 b ) in the cross section of the crash box ( 12 ).
19 . The crash management system according to claim 16 , characterized in that the positioning means ( 44 ; 44 a ; 44 b ) are formed as steps ( 46 ) or lips ( 48 ) formed on the extensions ( 36 ; 36 a ; 36 b ), the steps ( 46 ) or lips ( 48 ) being arranged within the cross section of the crash box ( 12 ) in contact with the crash box ( 12 ).
20 . The crash management system according to claim 18 , characterized in that the receiving section ( 40 ; 40 a ) has a threaded section in order to fasten the towing lug directly to the receiving element ( 30 ; 30 a ; 30 b ).

Description

FIELD OF THE INVENTION The invention relates to a crash management system for a motor vehicle which is characterized by a particularly advantageous arrangement of a receiving means for a towing lug, in particular also in connection with vehicles having a relatively high weight, such as electric vehicles or SUVs. BACKGROUND A crash management system for a motor vehicle having the features of the preamble of the two independent claims is known from DE 10 2016 000 948 B4. The known crash management system is characterized by a receiving element for a towing lug, which has two flange-like extensions which extend in the transverse direction of the crossbeam and which laterally protrude beyond the side walls of a crash box. The extensions are in particular arranged between the front side of the crash box facing the extensions and a rear flange of the crossbeam, the receiving element simultaneously serving as fastening element for the crossbeam on the crash box. To this end, a plurality of fastening screws or the like are provided, by means of which the mentioned components are connected or screwed to one another. A separate insert component, which is arranged in the area of a longitudinal bore of the receiving element, is furthermore provided for fastening the towing lug in the receiving element. DESCRIPTION OF THE INVENTION The crash management system according to the invention for a motor vehicle having the features of the two independent claims has the advantage that an optimized or relatively simple connection of the crossbeam to the crash box is made possible on the one hand, and that the forces acting on the vehicle during a towing process are introduced very well into the crash management system, i.e. into the crossbeam and the crash box, by means of an advantageous arrangement and formation of the receiving element for the towing lug, on the other hand. This makes it possible to advantageously also use the crash management system according to the invention for vehicles which have a relatively high weight, for example electric vehicles or SUVs with a typical weight of over 2 to. The arrangement of the receiving element for the towing lug can thereby either take place in the front area and/or in the rear area of the vehicle. The invention is based on the idea of—contrary to the above-mentioned background art—connecting the crossbeam directly to the crash box, i.e. without functional inclusion of the receiving element on the one hand, and of providing for a large-surface introduction of forces, which are introduced into the crossbeam and the crash box via the receiving element, on the other hand. For this purpose, the first object of the invention is a the crash management system for a motor vehicle, comprising a crossbeam extending essentially along a transverse direction, the crossbeam having two crash boxes arranged at a distance from one another, the crossbeam being fixable to a vehicle structure by means of the two crash boxes and the crash management system comprising a receiving element for a towing lug protruding with a first subsection into the cross section of the crash box, the receiving element having two flange-like extensions on opposite sides, the extensions overlapping with a front side of the crash box in the direction of a longitudinal axis of the extensions, and the extensions being in contact with the crash box on one side in a longitudinal direction of the receiving element wherein in the area of the extensions, the crash box has recesses which receive the extensions in the longitudinal direction, that the crash box directly contacts the crossbeam on the side facing the crossbeam, and that the extensions are in contact with the crossbeam on the side facing away from the crash box. The second object of the invention is a crash management system for a motor vehicle, comprising a crossbeam extending essentially along a transverse direction, the crossbeam having two crash boxes arranged at a distance from one another, the crossbeam being fixable to a vehicle structure by means of the two crash boxes and the crash management system comprising a receiving element for a towing lug protruding with a first subsection into the cross section of the crash box, the receiving element having two flange-like extensions on opposite sides, the extensions overlapping with a front side of the crash box in the direction of a longitudinal axis of the extensions and extensions being in contact with the crash box on one side in a longitudinal direction of the receiving element wherein in the area of the extensions the crash box has recesses, which receive the extensions in the longitudinal direction that the crash box directly contacts the crossbeam on the side facing the crossbeam, and that the extensions contact a flange plate of the crash box on the side of the crash box facing away from the crossbeam. Advantageous embodiments of the crash management system according to the invention are indicated in the dep