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US 10,828,810 B2Granted
Method for the production of a vehicle body element and vehicle body element
AssigneeAudi AG
InventorsAnja Jäschke, Mario Boehme
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Abstract
A method for the production of a vehicle body element is disclosed, wherein the vehicle body element is provided as a component composite comprised of at least one carrier profile part having a hollow structure, and a lightweight material, for example plastic. A liquid starting component of the lightweight construction material is introduced into the hollow structure of the carrier profile part and is then cured to forms the component composite.
Claims9
A method for the production of a vehicle body element, comprising:
- first introducing lightweight filler pellets as loose bulk material into a hollow structure of at least one carrier profile part, followed by
- introducing into the hollow structure of the at least one carrier profile part a lightweight material made from structural plastic foam having a liquid starting component which undergoes a foaming process under increased pressure and heat to produce a composite component;
- and thereafter integrating the lightweight filler pellets in the structural plastic foam,
- wherein the liquid starting component is directly injected into the hollow structure of the at least one carrier profile part and foamed, and
- subdividing the hollow structure of the at least one carrier profile part into sub-chambers each separated by a bulkhead part and fluidly connected to each other, each said bulkhead part being lower than the at least one carrier profile part, and filling the sub-chambers in dependence on a desired component shape stability in different quantity distributions with the lightweight filler pellets,
- wherein the liquid starting component flows into all of the sub-chambers.
3 more elements
Dependencies are inferred from the claim text.