Stiffeners for casting light-metal door headers

A reinforcement, light metal technology used in doors, vehicle components, transportation and packaging to solve problems such as not being very effective, increasing bending stiffness, etc.

Inactive Publication Date: 2016-04-13
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach is suboptimal because in open sections most of the added material is fairly close to the neutral axis of bending and is therefore not very effective in increasing bending stiffness

Method used

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  • Stiffeners for casting light-metal door headers
  • Stiffeners for casting light-metal door headers
  • Stiffeners for casting light-metal door headers

Examples

Experimental program
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Embodiment Construction

[0047] The following discussion of embodiments of the invention for reinforcement of cast light metal lintels is merely exemplary in nature and in no way intended to limit the invention or its application or use.

[0048] figure 1 is an illustration of a vehicle door 10 , where door 10 is a left side door as viewed from the left outside of the vehicle. The door 10 includes a lintel 12 , which is the area above the window of the door 10 . The lintel 12 has the narrowest cross-section of any part of the door 10 . Additionally, the lintel 12 is subject to lateral stiffness specifications, which can vary by geographic region. For example, in developed regions of the world with highway infrastructure, the lintel 12 may be required to exhibit a lateral load of less than 3 millimeters (mm ) for lateral deflection. In other parts of the world, lintel stiffness specifications can be less stringent.

[0049] figure 2 is a cross-sectional illustration of a traditional lintel and a...

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PUM

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Abstract

The invention discloses a stiffener for casting light-metal door headers.Stiffeners are disclosed which can be added to the header section of cast light-metal door panels. The header section casting can be designed for manufacturability, and to meet nominal lateral stiffness specifications while making effective use of material. The stiffeners can be cast in place in the header or attached to the header section after casting via snap-fit features, adhesive or both. The stiffeners can themselves be made of a light-weight metal such as aluminum, and can be produced by roll forming, stamping or extrusion. By effectively yielding a closed-section door header shape, the stiffeners provide maximum incremental bending stiffness in the header while adding a minimum amount of incremental material and mass.

Description

[0001] government contract [0002] This invention was made with United States Government support under Agreement No. DE-EE0005753 awarded by the United States Department of Energy. The US Government may have certain rights in this invention. technical field [0003] The present invention relates generally to increased stiffness of automotive lintels, and more particularly to reinforcements that may be added to cast light metal lintels, where the lintel is part of the door inner panel and has an open section as a result of being cast, and the reinforcement effectively provides Closed-section lintels with high bending stiffness and minimal excess weight. Background technique [0004] Automakers are increasingly turning to castings of low-density metals such as magnesium to replace parts traditionally made from stamped steel. These light metal castings have found many applications in automobiles, including door inner panels. Cast light metal door inner panels can replace ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60J5/04
CPCB60J5/042B60J5/0402B60J5/0422B60J5/0466B60J5/0483
Inventor J.T.卡特A.K.萨赫德夫
Owner GM GLOBAL TECH OPERATIONS LLC
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