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A cushioning energy-absorbing structure

An energy-absorbing structure and foam material technology, which is applied to springs, springs/shock absorbers, mechanical equipment, etc. made of plastic materials, can solve the problems of low buffering energy-absorbing efficiency and unreasonable energy-absorbing structure, and achieve energy absorption. The effect of strong capacity, good load consistency level and stable deformation process

Active Publication Date: 2019-07-16
广州智能装备研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many kinds of traditional energy-absorbing devices, but most of them have unreasonable energy-absorbing structures and low buffering and energy-absorbing efficiency.

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] An embodiment of the buffer energy-absorbing structure of the present invention, the structure schematic diagram of the buffer energy-absorbing structure described in this embodiment is as attached figure 1 And attached figure 2 shown, including

[0027] The outer tube 4 and the inner tube 5 arranged in the outer tube 4, four foam layers are arranged between the inner wall of the outer tube 4 and the outer wall of the inner tube 5, and the foam layers are all filled with positive Poisson's ratio foam materials or negative Poisson's ratio foam materials. Compared with the foam material, two adjacent foam layers are connected by welding, and the foam materials in the adjacent foam layers are alternately arranged in positive and negative Poisson's ratio in the radial direction, and the foam layer at the outer wall end of the inner tube 5 is filled with Negative Poisson's ratio foam material 3, the foam layer at the inner wall end of the outer tube 4 is filled with a posi...

Embodiment 2

[0029] An embodiment of the buffer energy-absorbing structure of the present invention, the structure schematic diagram of the buffer energy-absorbing structure described in this embodiment is as attached figure 1 And attached figure 2 shown, including

[0030] The outer tube 4 and the inner tube 5 arranged in the outer tube 4, six foam layers are arranged between the inner wall of the outer tube 4 and the outer wall of the inner tube 5, and the foam layers are all filled with positive Poisson's ratio foam materials or negative Poisson's ratio foam materials. Compared with the foam material, two adjacent foam layers are connected by bonding, and the foam materials in the adjacent foam layers are alternately arranged in positive and negative Poisson's ratio in the radial direction, and the foam layer at the outer wall end of the inner tube 5 is filled There is a negative Poisson's ratio foam material 3, and the foam layer at the inner wall end of the outer tube 4 is filled wi...

Embodiment 3

[0032] An embodiment of the buffer energy-absorbing structure of the present invention, the structure schematic diagram of the buffer energy-absorbing structure described in this embodiment is as attached figure 1 And attached figure 2 shown, including

[0033] The outer tube 4 and the inner tube 5 disposed inside the outer tube 4, two foam layers are arranged between the inner wall of the outer tube 4 and the outer wall of the inner tube 5, and the two foam layers are connected by one-time molding by 3D printing, and the inner tube The foam layer at the outer wall end of 5 is filled with a negative Poisson's ratio foam material 3, and the foam layer at the inner wall end of the outer tube 4 is filled with a positive Poisson's ratio foam material 1, and the absolute value of the Poisson's ratio of the foam material in the two layers of foam layers is the same. The thickness, porosity, and relative density of the material are the same, the positive Poisson's ratio foam materi...

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Abstract

The invention discloses a cushioning energy-absorbing structure, which comprises an outer tube and an inner tube arranged inside the outer tube, at least two foam layers are arranged between the inner wall of the outer tube and the outer wall of the inner tube, and the foam layer Both are filled with positive Poisson's ratio foam material or negative Poisson's ratio foam material, and the foam materials in the adjacent foam layers are arranged alternately in positive and negative Poisson's ratio in radial direction. The cushioning energy-absorbing structure of the present invention belongs to the foam sandwich tube structure with alternating positive and negative Poisson's ratios, rationally utilizes the structural characteristics of positive and negative Poisson's ratio foam materials, on the one hand, significantly improves the specific energy absorption value of the structure, and on the other hand The deformation process is stable, the initial peak load of the impact force is low, and the buffer energy-absorbing structure has a simple structure, simple and easy technical means, can realize rapid production, and is suitable for industrial applications.

Description

technical field [0001] The invention relates to an energy absorbing device, in particular to a buffer energy absorbing structure. Background technique [0002] "Safety, energy saving, and environmental protection" are the three major themes in the development of contemporary automobiles, and the safety issue, that is, the crashworthiness issue, ranks first. Energy saving and environmental protection require the structure to have the characteristics of light weight and high energy absorption. Any increase in mass means more fuel consumed and more pollution to the environment. In the case of the increasingly serious problem of automobile lightweight, how to reasonably design a buffer and energy-absorbing structure with good performance to meet the crashworthiness requirements of automobiles has become a direction of energy-absorbing structure design. [0003] Collision safety is an important indicator of the safety of various vehicles. A considerable part of the materials in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F1/37
CPCF16F1/37
Inventor 林贞琼詹林献赵常均李博
Owner 广州智能装备研究院有限公司
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