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Energy absorbing device with fibers embedded in plastic material and associated front face

An energy absorbing device, a technology of plastic materials, applied in the substructure, superstructure, vehicle components, etc., which can solve the problems of high quality, high cost, and a lot of time

Inactive Publication Date: 2015-07-29
FAURECIA BLOC AVANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since such a device usually consists of several parts assembled together: a support plate, a block of foamed aluminum or a metal box, a deformable shell with a block of foamed metal or a metal box inserted inside, etc., the device is of high quality and complex structures
Therefore, these absorbers are expensive since they take a lot of time to assemble and involve a lot of parts

Method used

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  • Energy absorbing device with fibers embedded in plastic material and associated front face
  • Energy absorbing device with fibers embedded in plastic material and associated front face
  • Energy absorbing device with fibers embedded in plastic material and associated front face

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] In the following description, longitudinal, transverse, forward and rearward directions are to be understood as normal directions relative to vehicle movement.

[0035] figure 1 The frame 1 shown is designed to be integrated substantially vertically into the front of the motor vehicle. The frame 1 comprises an upper transverse crossbar 3 , a lower transverse crossbar 5 and two legs 7 arranged to be positioned substantially vertically. Each leg 7 connects one end of the upper transverse rail 3 to a corresponding end of the lower transverse rail 5 .

[0036] A central opening 9 is defined between the crossbar and the legs.

[0037] The region 11 of the frame 1 at the intersection of the upper cross member 3 and the leg 7 is designed to be positioned substantially along the direction of longitudinal extension of the main beam of the motor vehicle. The region 13 located substantially at the intersection of the lower cross member 5 and the leg 7 is designed to be position...

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PUM

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Abstract

The invention relates to an energy absorption device for a motor vehicle, said device comprising a structure provided so as to plastically deform under the effect of an impact of a given energy, the structure being made of a matrix of a ductile plastic material and high-tenacity fibers embedded in the matrix, the majority of the fibers having a length of between 0.1 and 10 mm, and the material comprising between 2 and 10 wt % of high-tenacity fibers.

Description

technical field [0001] The present invention generally relates to energy absorbing devices for motor vehicles. Background technique [0002] For example, energy absorbing devices are known for moderate impacts of the Danner type. These energy absorbers are usually inserted between the front of the vehicle and the main beam or between the front of the vehicle and the lower sill. Lower beams are also known as "bracket extensions". [0003] Such shock absorbers generally consist of a preloaded metal box to deform plastically by absorbing part of the energy of the shock in the event the shock has a strength higher than a predetermined energy. Such an absorber is described, for example, in FR 0756932 . The force causing the plastic deformation of the energy absorber (also called the setting of the energy absorber) must be as high as possible to allow efficient dissipation and reduction of energy. Therefore, the force must be greater than the lower limit Fmini. [0004] The f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R19/34F16F7/12
CPCF16F7/124B62D25/085F16F7/121B62D29/005B60R19/03B60R19/34B62D21/152F16F7/003F16F7/12
Inventor 玛丽-皮埃尔·布隆菲力浦·库帕尼翁阿布拉·斯坦梅茨文森特·戈尼恩
Owner FAURECIA BLOC AVANT