BEND-FORMED LOAD-BEARING STRUCTURE OF A PASSENGER CAR

Abstract

The invention relates to a method, use or a profile for manufacturing metallic flat materials to a cost-effective load-bearing structure of a passenger car and the usage of it. As the main forming manufacturing method the bend forming according to DIN EN ISO 8580 is used.

Claims

1. Method for manufacturing a load-bearing structure of a passenger car characterized in that the bend forming according to DIN EN ISO 8586 is used as the main forming procedure for the structure (50%) manufactured out of metallic flat materials whereby load-bearing structure is defined as a land-based automotive vehicle or attached or pulled structure of it and whereby bend forming is carried out as a multi-edged forming process for most of the metallic flat materials (50%).

2. Method for manufacturing a load-bearing structure of a passenger car according to the claim 1, characterized in that the load-bearing structure that is used is metallic flat material and have a thickness 6.0 mm, more preferably 3.0 mm.

3. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the as-delivered condition of the used metallic flat material before a necessary preparatory cutting step and the following bend forming step is a coil, a strip, a plate, a sheet, a blank, a contoured or shaped sheet, or a panel.

4. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the load-bearing structure is used with a blank metallic surface without an additional painting or cathodic dip coating.

5. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the metallic flat material is preferably a stainless steel, more preferably a cold-hardened stainless steel.

6. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the metallic flat material is preferably a high strength steel with a yield strength Rp0.2400 MPa and a bending angle 90 at the same time.

7. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the metallic flat material is a flexible rolled or a tailored welded product.

8. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the metallic flat material is hot-formed and manufactured by bend forming after it.

9. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the metallic flat material is a so-called sandwich structure or also called steel-polymer-composite structure.

10. Method for manufacturing a load-bearing structure of a passenger car according to the claim 1, characterized in that the manufactured vehicle is used in a franchise manufacturing concept.

11. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the manufactured vehicle is used as a passenger transportation vehicle like a car, a bus, a taxi or a people mover.

12. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the manufactured vehicle is used as a battery electric vehicle (BEV), a fuel cell vehicle (FCV) including also hybrid versions.

13. Method for manufacturing a load-bearing structure of a passenger car according to claim 1, characterized in that the load-bearing structure is used for a land-based freight transport vehicle like vans, pick-ups, post office vehicles, last-mile transportation vehicles or vehicle bodies for platform trucks. -based

14. Use of a load-bearing structure of a passenger car characterized in that the bend forming according to DIN EN ISO 8586 is used as the main forming procedure for the structure (50%) manufactured out of metallic flat materials whereby load-bearing structure is defined as a land-based automotive vehicle or attached or pulled structure of it.

15. A profile of load-bearing structure of a passenger car characterized in that the bend forming according to DIN EN ISO 8586 is used as the main forming procedure for the structure (50%) manufactured out of metallic flat materials whereby load-bearing structure is defined as a land-based automotive vehicle or attached or pulled structure of it.

Description

[0021] The present invention is illustrated in more details referring to the following drawings where

[0022] FIG. 1 shows one embodiment of the invention schematically seen from the top view,

[0023] FIG. 2 shows another embodiment of the invention schematically seen as a view of one assembling state,

[0024] FIG. 3 shows further another embodiment of the invention schematically seen as a view of another assembling state.

[0025] FIG. 1 illustrates the flat metallic material (1) after a preparatory cutting step before bend forming whereby the dashed lines (2) shows the areas of bend forming (bend axis), because of which the load-bearing structure can be classified into a passenger zone (3), side panels (4), rear wall (5) and front panel (6).

[0026] FIG. 2 illustrates transversal arrangement of at least two bend-formed structures (7) within a lap-joint configuration (8).

[0027] FIG. 3 illustrates the insertion of remnant sheets 9 into a bend-formed load-bearing structure 10 as additional reinforcement and stiffener elements after cutting them out of the as-delivered rectangular flat metallic sheet.