Manufacturing method of impact energy absorbing component and impact energy absorbing component

A technology of impact energy and manufacturing method, which is applied in the direction of substructure, vehicle parts, elastic shock absorbers, etc., can solve the problem of not paying special attention to the fixation, labor-consuming and other problems, and achieve the effect of stabilizing energy absorption characteristics

Inactive Publication Date: 2009-04-22
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the metal foam is pressed into the hollow part of the pipe body, the metal foam is in an unstable state in the hollow part of the pipe body, and the metal foam must be temporarily supported in the hollow part of the pipe body for compression molding. , so there is a problem that the operation is very labor-intensive
[0010] In addition, Patent Documents 3 and 4 also describe an impact energy absorbing member in which a metal foam is filled in a hollow portion of a metal cylindrical body. The fixed aspect of the department is not particularly concerned

Method used

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  • Manufacturing method of impact energy absorbing component and impact energy absorbing component
  • Manufacturing method of impact energy absorbing component and impact energy absorbing component
  • Manufacturing method of impact energy absorbing component and impact energy absorbing component

Examples

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Embodiment

[0063] Next, the cylindrical body and the metal foam body used in this embodiment will be described. The cylindrical body is a closed cross-section member with a circular cross-section formed of 5502-H34 aluminum alloy. The plate thickness is 1 mm, the inner diameter is 80 mm, and the dimension in the axial direction is 200 mm. On the other hand, the metal foam body is a cylindrical metal body formed by foaming pure aluminum, has a density of 0.24 g / cm 3 , an outer diameter of 80.5 mm, and an axial dimension of 200 mm. That is, the outer diameter of the metal foam body is 0.5 mm larger than the inner diameter of the cylindrical body.

[0064] The metal foam body constituted above is pressed into the hollow portion of the cylindrical body. This press-fitting was performed slowly at a speed of 5 mm / min using a universal testing machine manufactured by Instron Corporation (model: 4200, load capacity: 5 ton). The average load at the time of press-fitting was about 20 kN.

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Abstract

The invention provides an impact energy absorption component and a manufacturing method thereof; in the prior art of filling foaming metallic objects in a hallow part of a metallic cylinder body, the foaming metallic objects can be reliably fixed in the hallow part of the metallic cylinder body. The energy absorption component is characterized in that a foaming metallic object (3) whose sectional dimension is a little more than that of the hallow part (2) thereof is pressed in from an opening side and an edge which only makes the surface layer parts (4) of the foaming metallic object (3) plastically deformed, of the hallow part (2) of the metallic cylinder body (1) with sealed sections.

Description

technical field [0001] The present invention relates to a manufacturing method of an impact energy absorbing member and an impact energy absorbing member manufactured by the manufacturing method, which are used for structural members such as automobiles, railway vehicles, ships, etc., and are deformed and absorbed when subjected to a compressive impact load during a collision. impact energy. Background technique [0002] As an impact energy absorbing member (crash box) that absorbs impact energy such as when an automobile collides, a hollow member made of steel having a closed cross section has conventionally been generally used. The steel hollow member is crushed and deformed to absorb the impact energy when receiving compressive impact energy in the axial direction and the cross-sectional direction. At this time, in order to absorb a large amount of energy with only the amount of deformation, it is effective to increase the size and wall thickness of the component. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D21/15F16F7/12
CPCB62D21/15C22C1/08F16F7/12
Inventor 金桥秀豪滨田猛
Owner KOBE STEEL LTD
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