Aluminium die-cast part

Patent metadata

Field	Value
Publication number	US-10077082-B2
Application number	US-201514939509-A
Country	US
Kind code	B2
Filing date	Nov 12, 2015
Priority date	Sep 5, 2013
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

An aluminum diecast part is provided, in particular in the form of a load-bearing motor vehicle part. In order to protect against sudden breaking loads, at least one tension element, made of a material that can be deformed in a ductile manner and having a different thermal expansion coefficient to the die-cast part, is bonded, in a load-resistant manner to the side of the die-cast part that is external to the load. The die-cast part remains highly deformable, even under the effects of greater temperature fluctuations, by way of the punctiform, shear-resistant interconnection of the die-cast part and the tension element at multiple sites distributed over the bond.

First claim

What is claimed is:

1. An aluminum die-cast part, comprising:
a cast part having a first side to which a load can be applied;
at least one tension element adhesively bonded in a load-resistant manner to an opposite side of the cast part to which the load can be applied, wherein
the tension element is made of a material that undergoes ductile deformation when the load is applied and has a coefficient of thermal expansion different to that of the cast part, and
the tension element and the cast part are connected to one another in a punctiform shear-resistant manner at multiple locations distributed over the adhesive bond between the cast part and the tension element, wherein
wherein the multiple locations define a grid pattern distributed over the adhesive bond.

2. The aluminum die-cast part according to claim 1 , further comprising spot-welds connecting the adhesively bonded cast part and tension element.

3. The aluminum die-cast part according to claim 1 , wherein mutually separated form-fit elements connect the tension element and the cast part to one another in the shear-resistant manner.

4. The aluminum die-cast part according to claim 1 , wherein the tension element is made of a multi-phase steel.

5. The aluminum die-cast part according to claim 4 , wherein the multi-phase steel is HC 600.

6. The aluminum die-cast part according to claim 4 , wherein the cast part is made of an AlSi alloy.

7. The aluminum die-cast part according to claim 5 , wherein the cast part is made of an AlSi alloy.

8. The aluminum die-cast part according to claim 1 , wherein the cast part is made of an AlSi alloy.

9. The aluminum die-cast part according to claim 1 , wherein the aluminum die-cast part is a vehicle structural component.

10. A load-bearing motor vehicle component, comprising:
an aluminum die-cast part having a first thermal expansion coefficient;
at least one tension element made of a ductile deformable material, the tension element having a second thermal expansion component different from the first thermal expansion component of the die-cast part, wherein
the tension element is bonded in a load-resistant manner to a side of the die-cast part that is opposite to a load applied to the die-cast part in order to protect against a sudden breaking load, and
punctiform, shear-resistant interconnections of the die-cast part and the tension element are provided at multiple sites distributed over the bond, whereby the die-cast part remains deformable even under effects of greater temperature fluctuations, wherein
the multiple sites define a grid pattern distributed over the bond.

11. The aluminum die-cast part according to claim 10 , wherein the multiple locations define vertices of a grid that divide the cast part and the at least one tension element into individual partial sections of identical shape.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Anasenzl Manuel
• Klinkenberg Franz-Josef
• Segaud Jean-Marc

Classifications

• B62D27/026

  Connections by glue bonding (in general F16B11/00; processes C09J5/00) · CPC title

• B62D29/008 Primary

  predominantly of light alloys, e.g. extruded · CPC title