Fibrous composite structural assembly for a motor vehicle

• US 9,738,322 B2
• Filed: 11/13/2015
• Issued: 08/22/2017
• Est. Priority Date: 05/16/2013
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Matthiessen, Dirk, Muehlhausen, Mark, Schneidewind, Thomas
• Primary Examiner(s): Daniels, Jason S
• Application Number:
  US14/940,418
• Publication Number:
  US 20160068199A1
• Time in Patent Office: 648 Days
• Field of Search: 2961812, 29618712, 29619305, 296202, 29620303
• CPC Class Codes: B62D 25/02 Side panels B62D33/046 takes precedence; sideboards for open load compartments B62D33/023
• CPC Class Codes: B62D 25/025 Side sills thereof
• CPC Class Codes: B62D 25/04 Door pillars ; windshield pillars
• CPC Class Codes: B62D 27/026 Connections by glue bonding in general F16B11/00; processes C09J5/00
• CPC Class Codes: B62D 29/043 Superstructures B62D25/161 takes precedence

Abstract

An assembly for a vehicle body includes the following components: a sill, roof frame, hinge pillar, outer shell and inner shell. The assembly is characterized by being very rigid and very firm, and having a high degree of structural possibilities whilst being relatively light in weight. The sill and the roof frame are formed by hollow profiles. The hinge pillar is made from an extruded fibrous composite. The sill, the roof frame and the hinge pillar are surrounded on the outer side and the inner side, at least partially, by the outer shell and the inner shell, such that the assembly components form a composite unit.

Claims

1. An assembly for a vehicle body, comprising:

a sill;

a roof frame;

a hinge pillar provided separately from the sill and the roof frame;

an outer shell; and

an inner shell, wherein

the sill and the roof frame are formed by hollow profiles extending along a longitudinal direction of the vehicle body in a vicinity of the hinge pillar,

the hinge pillar is made of an extruded fibrous composite, and

the sill, the roof frame, and the hinge pillar are at least partially surrounded on an outer side by the outer shell and on an inner side by the inner shell such that the sill, the roof frame, the hinge pillar, the outer shell, and the inner shell form a composite unit.

2. The assembly according to claim 1, wherein the hollow profiles are formed of a wound, grated, or extruded fibrous composite.

3. The assembly according to claim 2, wherein the fibrous composite is a carbon fiber composite material.

4. The assembly according to claim 1, wherein the outer and inner shells are formed of a fibrous composite.

5. The assembly according to claim 4, wherein the fibrous composite is a carbon fiber composite material.

6. The assembly according to claim 4, wherein the fibrous composite has a fiber structure or fiber fabric, or is formed at least partially from a metallic material.

7. The assembly according to claim 4, wherein fibers in the fibrous composite of the outer and inner shells are oriented, continuous fibers, said oriented, continuous fibers being aligned in a main loading direction of the assembly.

8. The assembly according to claim 1, wherein the extruded fibrous composite of the hinge pillar is a carbon fiber composite material having fibers with a fiber length from 8-40 mm.

9. The assembly according to claim 1, wherein the extruded fibrous composite of the hinge pillar is a carbon fiber composite material having fibers with a fiber length from 10-30 mm.

10. The assembly according to claim 1, further comprising high-strength adhesive bonds connecting the sill, roof frame, hinge pillar, outer shell, and inner shell together.

11. The assembly according to claim 1, wherein the composite unit is designed to have a ductility sufficient to absorb energy in an event of a crash and to ensure connection of the sill, roof frame, hinge pillar, outer shell, and inner shell assembly components even upon a partial destruction of an individual one of the assembly components.

12. The assembly according to claim 1, wherein the hinge pillar is configured to have a meandering shape.

13. The assembly according to claim 12, wherein the hinge pillar comprises further components.

14. The assembly according to claim 13, wherein the further components comprises one or more of fixtures for door hinges, door checks, wire harness feedthroughs, equipment components and fastening elements for interior trim components.

15. The assembly according to claim 1, wherein the assembly forms an A-pillar of the vehicle body.