Jack bracket and method for the production thereof
View Patent ↗The invention relates to a jack bracket ( 12 ) for a motor vehicle, which is fixed to a sill of the motor vehicle with flanges and an opening ( 16 ) for a receiving element in which the jack is placed. The invention also relates to a method for the production of said bracket ( 12 ). In order to simplify the production and configuration of the bracket ( 12 ) without comprising its stability, the bracket ( 12 ) is comprised of a tubular hollow profile ( 6 ) and a lid ( 13 ), which is fixed on the end ( 10 ) opposite the sill of the hollow profile ( 6 ) covering said end ( 10 ) and which has the opening ( 16 ) for the receiving element.
1. A bracket ( 12 ) for a motor vehicle, said bracket adapted to being fixed to a sill of the motor vehicle via flanges, said bracket having an opening ( 16 ) adapted for receiving a receiving element, said bracket ( 12 ) comprising:
a hollow profiled section ( 6 ) having a first end ( 7 ) proximate to the sill and a second end ( 10 ) remote from the sill and being in the form of a piece of tube, a wall section at said first end ( 7 ) being notched or cut out to form wall parts ( 9 ) spaced apart from one another by gaps ( 8 ), a circular circumferential region ( 11 ) being formed at said second end ( 10 ), and
a cover ( 13 ) secured to said circular circumferential region ( 11 ) and covering said second end ( 10 ) of the hollow profiled section ( 6 ) and having the opening ( 16 ) for receiving the receiving element,
wherein the hollow profiled section ( 6 ) is a hydroformed part.
2. The bracket as claimed in claim 1 , wherein the flanges are formed from said wall parts ( 9 ) of the hollow profiled section ( 6 ).
3. The bracket as claimed in claim 1 , wherein the cover ( 13 ) has a sleeve-like extension, by means of which the cover ( 13 ) is fitted onto said circular circumferential region ( 11 ) of the hollow profiled section ( 6 ).
4. The bracket as claimed in claim 1 , wherein the cover ( 13 ) has a base region ( 17 ) which is substantially planar in form.
5. The bracket as claimed in claim 1 , wherein the cover ( 13 ), in the installed position of the bracket ( 12 ) on the motor vehicle ( 30 ), is oriented parallel to the roadway over the entire base region ( 17 ).
6. The bracket as claimed in claim 4 , wherein the cover ( 13 ) has beads ( 18 ) in the base region ( 17 ).
7. The bracket as claimed in claim 1 , wherein the cover ( 13 ) has positioning holes ( 19 ) for a mounting device in the base region ( 17 ).
8. The bracket as claimed in claim 7 , wherein the positioning holes ( 19 ) are of different sizes.
9. The bracket as claimed in claim 1 , wherein the opening ( 16 ) in the cover ( 13 ) is delimited by a collar ( 20 ) set toward the hollow profiled section ( 6 ).
10. The bracket as claimed in claim 1 , wherein the receiving element is formed by a stopper ( 21 ), which consists of plastic.
11. The bracket as claimed in claim 10 , wherein the stopper ( 21 ), on its side ( 22 ) facing the cover, has at least one clip element ( 23 ) which interacts in a connecting manner with the opening ( 16 ) in the cover ( 13 ).
12. The bracket as claimed in claim 10 , wherein a circumferential outer side ( 24 ) of the stopper ( 21 ), in the securing position, is one of flush with a cylindrical edge ( 15 ) of the cover ( 13 ) and is set back therefrom.
13. The bracket as claimed in claim 10 , wherein an end side ( 25 ) of the stopper ( 21 ) which is remote from the cover is pre-offset downward with respect to surrounding components, which are critical in terms of damage, of the motor vehicle ( 30 ).
14. The bracket as claimed in claim 1 , wherein the contour of the wall parts ( 9 ), which form connecting flanges, of the hollow profiled section ( 6 ) and the contour of the sill ( 26 ) are designed to be of corresponding shape to one another in the attachment region of the bracket ( 12 ).
15. The bracket as claimed in claim 1 , wherein the bracket ( 12 ) is located outside a component separation between a sill panel ( 27 ) and an underbody panel ( 28 ) of the motor vehicle ( 30 ), the bracket ( 12 ) with the receiving element ( 21 ) projecting through an opening ( 44 ) in the underbody panel ( 28 ).
16. A process for producing a bracket of a motor vehicle which is adapted to being fixed to a sill of the motor vehicle by flanges and has an opening ( 16 ) for receiving a receiving element ( 21 ), comprising, in any order:
forming a hollow profiled section ( 6 ) from a tubular blank ( 1 ), which is expanded by means of hydroforming, the hydroforming pressure forming at least two expanded sections ( 2 ), which are axially spaced apart from one another, from the blank ( 1 ), which sections ( 2 ) are then divided into separate hollow profiled sections ( 6 ) by a dividing process, wherein the hollow profiled section ( 6 ) is formed with a first end ( 7 ) proximate to the sill and a second end ( 10 ) remote from the sill, wall section at the first end ( 7 ) being notched or cut out to form wall parts ( 9 ) spaced apart from one another by gaps ( 8 ), and a circular circumferential region ( 11 ) is formed at the second end ( 10 ),
assembling the bracket ( 12 ) from the hollow profiled section ( 6 ) and a cover ( 13 ) which covers the hollow profiled section ( 6 ) at the second end, and
forming the opening ( 16 ) in the cover ( 13 ).
17. The process as claimed in claim 16 , wherein the blank ( 1 ), following the shaping operation, is divided between the expanded sections ( 2 ), transversely with respect to a longitudinal axis ( 5 ) of the blank, to form individual blank sections, and then the individual blank sections are divided approximately in the middle, by a further dividing process taking place transversely with respect to the axial extent of the blank section, into in each case two hollow profiled sections ( 6 ).
18. The process as claimed in claim 16 , wherein unexpanded ends ( 4 ) of the blank ( 1 ) are cut off after the shaping operation.
19. The process as claimed in claim 16 , wherein at least some ( 9 a ) of the wall parts ( 9 ), which are spaced apart from one another by the gap ( 8 ) and form residual flanges, are angled off.
20. The process as claimed in claim 16 , wherein the notching takes place during or following the hydroforming of the hollow profiled section ( 6 ), with the hydroforming pressure still present in the hydroforming tool.
21. The process as claimed in claim 16 , wherein a sheet-metal section is deep-drawn to form the cover ( 13 ), and wherein the cover ( 13 ) is centrally perforated by stamping.
22. The process as claimed in claim 21 , wherein the cover ( 13 ) is fitted onto the hollow profiled section ( 6 ) and is then joined to the hollow profiled section ( 6 ) by welding, in the region of an end face ( 14 ) of a cylindrical edge ( 15 ) of the cover ( 13 ).