Method for filling a multi-chamber profile with foam, body and motor vehicle

Patent metadata

Field	Value
Publication number	US-12059828-B2
Application number	US-202217719897-A
Country	US
Kind code	B2
Filing date	Apr 13, 2022
Priority date	Apr 14, 2021
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

A method for filling a multi-chamber profile with foam includes providing the multi-chamber profile, which is a closed hollow chamber profile with at least two chambers, where an inner wall is disposed between two chambers of the at least two chambers which are arranged directly on each other, where the inner wall separates the two chambers from each other, and where a first one of the two chambers has a foam inlet. The method further includes forming an opening in the inner wall where the opening connects the two chambers and introducing a flowable foam material via the foam inlet into the first one of the two chambers such that the foam material is distributed within the first one of the two chambers and is introduced via the opening into a second one of the two chambers.

First claim

What is claimed is:

1. A method for filling a multi-chamber profile with foam, comprising the steps of:
providing the multi-chamber profile which is a completely closed hollow chamber profile with at least two chambers, wherein an inner wall is disposed between two chambers of the at least two chambers which are arranged directly on each other and wherein the inner wall separates the two chambers from each other;
drilling or milling a bore in an outer wall of a first one of the two chambers of the completely closed hollow chamber profile to form a foam inlet and, at a same time as the drilling or milling of the bore in the outer wall, drilling or milling through the bore in the outer wall a through bore in the inner wall, wherein the through bore connects the two chambers;
introducing a flowable foam material via the foam inlet into the first one of the two chambers such that the foam material is distributed within the first one of the two chambers and is introduced via the through bore into a second one of the two chambers; and
after the introducing, closing the bore in the outer wall of the completely closed hollow chamber profile.

2. The method according to claim 1 , wherein the flowable foam material is introduced into all of the at least two chambers via the foam inlet.

3. The method according to claim 1 , wherein the foam material is expanded to form a solid foam such that the solid foam substantially completely fills the two chambers.

4. The method according to claim 1 , wherein the foam material has at least two components which, for an expansion process of the foam material, are mixed with one another.

5. The method according to claim 1 , wherein the introducing is by a nozzle or a mixing head.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Focke Lars
• Schreider Maxim

Classifications

• B62D29/043

  Superstructures (B62D25/161 takes precedence) · CPC title

• B29L2031/30

  Vehicles, e.g. ships or aircraft, or body parts thereof {(vanes or blades B29L2031/08, air bags B29L2022/027)} · CPC title

• B62D25/04

  Door pillars {; windshield pillars} · CPC title

• B29K2075/00

  Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title

• B29C44/34

  Auxiliary operations · CPC title