shock absorbing parts

A technology of impact absorption and components, applied in the direction of vehicle components, substructure, superstructure, etc., to achieve the effect of ensuring energy absorption and increasing energy absorption

Active Publication Date: 2019-12-24
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this patent document 2, no study has been made on the plate thicknesses of the metal plates used for the box main body and the reinforcement

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0103] In order to confirm the effect of the impact absorbing member of this embodiment, an impact test was performed.

[0104] In this test, an analysis was performed to simulate a drop-weight impact test. Specifically, in the figure 2 The impact absorbing member of the shape shown is arranged such that the axial direction is along the vertical direction, and a collision body with a mass of 700 kg is dropped from a height of 13.8 m to cause the collision body to collide with one end of the impact absorbing member. At this time, the axial load and the axial displacement of the collision body are calculated, and the relationship between the load and the displacement is obtained. In addition, for one of the long side surfaces of the impact absorbing member after the impact test, the displacement in the direction (X direction) perpendicular to the surface including the welded portion was obtained. The displacement in the X direction is on both sides of the middle plate, specifical...

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PUM

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Abstract

A shock-absorbing member (10) capable of ensuring energy absorption and reducing weight, and absorbing shock loads loaded in the axial direction by periodic buckling, the shock-absorbing member (10) includes: a main body (20) composed of Consisting of a metal plate, the shape in a section perpendicular to the axial direction is a polygonal shape; and a middle plate (30), which is made of a metal plate, and the hollow part in the main body is arranged along the axial direction, and the polygonal shape of the main body (20) There is a pair of long sides (20a, 20b) opposite to each other, the middle plate (30) is joined to each long side (20a, 20b) of the polygonal shape of the main body (20), and the plate thickness t1 of the main body (20) and the middle plate ( 30) The plate thickness t2 satisfies 1.3×t1≤t2, and the unit of plate thickness t1 and plate thickness t2 is mm.

Description

Technical field [0001] The present invention relates to an impact absorbing member that absorbs an impact load of an axial load (load) by periodic buckling. Background technique [0002] Shock absorbing parts are used in transportation equipment such as automobiles, railways, and ships. The shock-absorbing member undergoes an impact load and deforms at the time of a collision, thereby being able to absorb the energy of the collision, and accompanying this, it is possible to ensure the safety of passengers. As such an impact absorbing member, for example, there is a frame member of an automobile and / or a crash box. [0003] figure 1 It is a perspective view schematically showing the arrangement of the skeleton components and the crash box in the automobile. As that figure 1 As shown, a front side member 2, a rear side member 3, and a bottom side member 7 are arranged on the side of the automobile. These components are arranged along the front and rear direction of the car. The f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F7/12B60R19/34B62D21/15F16F7/00
CPCB60R19/34F16F7/00F16F7/12B62D21/152B62D21/157B62D25/00B62D21/15B60R19/18F16F2224/0233
Inventor 泽靖典中泽嘉明浜田幸一伊藤泰则吉田博司
Owner NIPPON STEEL CORP
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