SYSTEM OF A REINFORCED BODY ELEMENT

Abstract

A system of a reinforced body element of a motor vehicle which includes a body element, an expansion material and a reinforcing layer. The expansion material has an expansion rate of at least 200%. Furthermore, the expansion material is arranged between the body element and the reinforcing layer.

Claims

1. A system of a reinforced body element of a motor vehicle, the system comprising: a body element; an expansion material having an expansion rate of at least 200%; and a reinforcing layer; wherein the expansion material is arranged between the body element and the reinforcing layer.

2. The system as claimed in claim 1, wherein the expansion material in an unexpanded state has a layer thickness of between 0.1 mm and 3 mm.

3. The system as claimed in claim 1, wherein the expansion material in an expanded state has a layer thickness of between 3 mm and 12 mm.

4. The system as claimed in claim 1, wherein the expansion material can be expanded by a temperature of at least 120° C.

5. The system as claimed in claim 1, wherein the reinforcing layer has a layer thickness of between 0.05 mm and 0.2 mm.

6. The system as claimed in claim 1, wherein the reinforcing layer contains one or more of the following materials: paper, aluminum, fibers, natural fibers, synthetic fibers, carbon fibers, glass fibers, plastic or epoxy resin.

7. The system as claimed in claim 1, wherein an area of the expansion material is greater than 0.1 m.sup.2.

8. The system as claimed in claim 1, wherein an area of the reinforcing layer is greater than 0.1 m.sup.2.

9. The system as claimed in claim 1, wherein the reinforcing layer completely covers the expansion material.

10. The system as claimed in claim 1, wherein the body element is formed from steel and/or aluminum and/or carbon.

11. The system as claimed in claim 1, wherein the body element is a roof element.

12. A method for reinforcing a body element in a motor vehicle, the method comprising the following steps: providing a body element; providing an expansion material with a reinforcing layer; arranging the expansion material with the reinforcing layer on the body element so that the expansion material is between the body element and the reinforcing layer; wherein the expansion material has an expansion rate of at least 200%.

13. The method as claimed in claim 12, wherein the expansion material is expanded after it is arranged on the body element.

14. The method as claimed in claim 12, wherein the expansion material is expanded before it is arranged on the body element.

15. The method as claimed in claim 12, wherein the method is carried out using a system of a reinforced body element of a motor vehicle, the system comprising: a body element; an expansion material having an expansion rate of at least 200%; and a reinforcing layer; wherein the expansion material is arranged between the body element and the reinforcing layer.

Description

[0041] Details and advantages of the invention will be described below on the basis of exemplary embodiments and with reference to schematic drawings. In the drawings:

[0042] FIG. 1 shows an exemplary illustration of a system of a reinforced body element according to the prior art;

[0043] FIG. 2a shows a schematic illustration of an exemplary system of a reinforced body element, wherein an expansion material is illustrated in an unexpanded state; and

[0044] FIG. 2b shows a schematic illustration of an exemplary system of a reinforced body element, wherein an expansion material is illustrated in an expanded state.

[0045] FIGS. 2a and 2b each show a system 1 of a reinforced body element 2. Here, an expansion material 5 is illustrated in an unexpanded state in FIG. 2a, wherein the expansion material 5′ is illustrated in an expanded state in FIG. 2b. The system 1 furthermore comprises a reinforcing element 6. Here, the expansion material 5, 5′ is arranged between the body element 2 and the reinforcing element 6. [0046] LIST OF REFERENCE DESIGNATIONS [0047] 1 System [0048] 2 Body element [0049] 3 Adhesive [0050] 4 Sandwich panel [0051] 5 Expansion material in an unexpanded state [0052] 5′ Expansion material in an expanded state [0053] 6 Reinforcing element