To provide a shock absorption structure capable of being manufactured inexpensively while having a structure whose cross sectional area is different.SOLUTION: A fiber structure 21 of a shock absorption structure 20 has a first structure 31 composed of a three-dimensional woven fabric having an open cross-sectional shape, and a second structure 41 composed of a two-dimensional woven fabric that is joined to the first structure 31 to form a closed cross-sectional shape. The first structure 31 has a step part 34 in which a thickness is made constant and a cross sectional area in a cross section orthogonal to a load direction Z and a stacking direction is discontinuously increased from a first tip surface 33b to a first base end surface 33c along the load direction Z.SELECTED DRAWING: Figure 3
【課題】断面積が異なる構成を有しながら安価に製造できる衝撃吸収構造体を提供すること。【解決手段】衝撃吸収構造体20の繊維構造体21は、開き断面形状である三次元織物によって構成される第1構造体31と、第1構造体31と接合されて閉じ断面形状を形成する二次元織物によって構成される第2構造体41とを有する。第1構造体31は、厚さが一定であり、かつ荷重方向Z及び積層方向に直交する断面での断面積を、荷重方向Zに沿う第1先端面33bから第1基端面33cに向けて不連続に大きくする段差部34を有する。【選択図】図3
SHOCK ABSORPTION STRUCTURE
衝撃吸収構造体
2021-02-15
Patent
Electronic Resource
Japanese
European Patent Office | 2023
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