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Vehicle having impact protection

A technology for vehicles and components, applied in vehicle parts, bumpers, transportation and packaging, etc., can solve problems such as failure of engine mounts, and achieve the effects of high energy transfer, simple installation and reliable use

Inactive Publication Date: 2015-04-29
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Caused engine mounts to fail

Method used

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  • Vehicle having impact protection
  • Vehicle having impact protection
  • Vehicle having impact protection

Examples

Experimental program
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Embodiment Construction

[0039] figure 1 A schematic plan view of the front body structure 1 of the passenger car 2 with the associated crash structure 3 is shown in plan view. The crash structure 3 has a front bumper 4 which is fastened to two second elements in the form of crash boxes 5 . In the normal state shown, the crash box 5 is partially inserted into a first element in the form of a motor mount 6 . The engine mount 6 is constructed as a tubular hollow profile made of carbon-fibre-reinforced plastic with a rectangular cross-sectional shape. The crash box 5 also has a rectangular basic shape and is arranged longitudinally displaceable in the motor mount 6 .

[0040] In the event of a frontal collision indicated by arrow C at higher speeds, the bumper 4 moves together with the crash box 5 in such a way that they hit the engine mount 6 and damage it in order to release energy. Since the engine mount 6 is made of carbon fiber reinforced plastic and thus does not absorb energy by plastic deformati...

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PUM

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Abstract

The invention relates to a vehicle having a first, hollow element (6) made of a composite fiber material, a second element (5), which can be slid longitudinally in the hollow element (6), and at least one third element (7), which is guided through a related hole (8) in a wall (9) of the first element (6), wherein the at least one third element (7) is arranged in a track of the second element (5) and has a greater strength than the first element (6).

Description

technical field [0001] The invention relates to a vehicle, in particular a passenger car, having a first hollow element made of fiber composite material, such as an engine mount, and a second element movable longitudinally in the hollow body, such as a so-called crash box . Background technique [0002] For crash structures made of carbon-fiber-reinforced plastic in motor vehicles, tubular supports with a prismatic (eg rectangular) or circular cross-section are mainly used today, into which so-called crash boxes are inserted. At its other end, the crash box is connected to the bumper. In a frontal collision, first the bumper and then the crash box are used as energy absorbers. Deformed / damaged bumpers or crash boxes crash into engine mounts when their energy absorbing capacity is exhausted but the kinetic energy has not yet been fully dissipated. This causes the engine mounts to fail. When the mounts are made of carbon fiber reinforced plastic, they fail after so-called ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/32B60R19/18B62D21/09
CPCB60R19/34
Inventor T·弗洛伊登贝格尔W·哈恩
Owner BAYERISCHE MOTOREN WERKE AG