FRONT AXLE BRACKET FOR A MOTOR VEHICLE AND METHOD FOR THE PRODUCTION THEREOF

1 . A front axle bracket ( 1 ) for a motor vehicle, comprising two lateral consoles ( 3 , 4 ) and a central transverse beam ( 2 ), which connects the two lateral consoles ( 3 , 4 ), wherein the transverse beam ( 2 ) is constructed from an extruded section ( 42 ) with a double-walled region ( 20 ).

2 . The front axle bracket ( 1 ), according to claim 1 , wherein the transverse beam ( 2 ) is constructed as an at least partially separated and/or at least partially unwound extruded section ( 42 ).

3 . The front axle bracket ( 1 ), according to claim 1 , wherein the front axle bracket ( 1 ) is produced at least predominantly from a light metal.

4 . The front axle bracket ( 1 ), according to claim 1 , wherein the consoles ( 3 , 4 ) have mounts ( 9 , 10 ) for fastening on the vehicle and bearing mounts ( 11 , 12 , 14 , 15 ) for wheel guide suspension links.

5 . The front axle bracket ( 1 ), according to claim 1 , wherein the double-walled region ( 20 ) is constructed in an angular manner with a front horizontal web ( 21 ) and an adjoining vertical web ( 22 ).

6 . The front axle bracket ( 1 ) according to claim 5 , wherein a wall ( 23 ) is formed between the front horizontal double-walled web ( 21 ) and the vertical web ( 22 ).

7 . The front axle bracket ( 1 ), according to claim 1 , wherein the double-walled region ( 20 ) has one or several cavities ( 24 , 25 ).

8 . The front axle bracket ( 1 ), according to claim 1 , wherein a lower horizontal surface ( 30 ) and an upper horizontal surface ( 28 ) adjoin the double-walled region ( 20 ), between which a pendulum support mount ( 5 ) is received, extending substantially in a vertical direction.

9 . The front axle bracket ( 1 ), according to claim 1 , wherein the lower horizontal surface ( 30 ) has two lugs ( 34 , 35 ) pointing obliquely towards the rear for the fastening of the lateral consoles ( 3 , 4 ).

10 . The front axle bracket ( 1 ) according to claim 9 , wherein free spaces ( 36 , 38 ) are formed between the transverse beam ( 2 ) and the lateral consoles ( 3 , 4 ).

11 . The front axle bracket ( 1 ), according to claim 1 , wherein the pendulum support mount ( 5 ) lies against the double-walled vertical web ( 22 ).

12 . The front axle bracket ( 1 ) according to claim 11 , wherein a recess ( 40 ) runs substantially in longitudinal direction (X) through the double-walled vertical web ( 22 ) and the pendulum support mount ( 5 ).

13 . A method for the production of a front axle bracket ( 1 ), according to claim 1 , with at least the following steps: producing lateral consoles ( 3 , 4 ), producing an extruded section ( 42 ) from a light metal or a light metal alloy with a double-walled region ( 20 ), separating the extruded section ( 42 ) and deforming to a transverse beam ( 2 ), and fastening the lateral consoles ( 3 , 4 ) on the transverse beam ( 2 ).

14 . The method according to claim 13 , wherein an extruded profile ( 42 ) is formed with a double-walled region ( 20 ) and a closed region ( 44 ), and the closed region ( 44 ) is subsequently separated in at least one separation line ( 46 ) and unwound completely or partially.

15 . The method according to claim 14 , wherein the separation line ( 46 ) is formed in an upper horizontal surface ( 28 ) of the closed region ( 44 ) and subsequently the rear part of the upper surface ( 28 ) is turned towards the rear and downwards, so that the part which is turned towards the rear forms an extension of the lower horizontal surface ( 30 ) with mount regions, e.g. lugs ( 34 , 35 ) for the fastening of the front axle bracket ( 1 ).

16 . The method according to claim 15 , wherein a pendulum support mount ( 5 ) is fastened, preferably welded, between the upper horizontal surface ( 28 ) and the lower horizontal surface ( 30 ) of the separated, unwound closed region ( 44 ).

17 . The method, according to claim 13 , wherein the double-walled region ( 20 ) is formed with a double-walled, preferably horizontal web ( 21 ) and an adjoining double-walled vertical web ( 22 ), preferably in an L-shape.

18 . The method, according to claim 15 , wherein in the upper horizontal surface ( 28 ) a recess ( 31 ) is cut for the fastening of an upper region of the pendulum support mount ( 5 ).

19 . The method, according to claim 13 , wherein the separation process takes place by cutting or punching.

20 . The method, according to claim 13 , wherein the lateral consoles ( 3 , 4 ) are cast.