To avoid crushing near a fastening hole or buckling of fibers due to a shearing load applied from a fastener to the hole.SOLUTION: A fastening structure 1 comprises: a structural member 10 that is made of a fiber-reinforced composite material in which layers 11 to 14 in which reinforcing fibers are linearly oriented are laminated so that orientation directions are different, and in which when the number of orientation directions is n, a fastening hole 15 is provided which is a 2×n polygon and whose sides 15-1 to 15-8 of the 2×n polygon are orthogonal to any of the reinforcing fibers of each layer 11 to 14; and a fastener 30 having a polygonal part 31b as an engaging part of a 2×n square that engages the fastening hole 15.SELECTED DRAWING: Figure 1
【課題】締結具から締結用の孔へのせん断負荷による孔付近の圧潰や繊維の座屈を回避すること。【解決手段】締結構造1は、強化繊維が直線状に配向する層11〜14を、配向する方向が異なるように積層した繊維強化複合材料からなり、配向する方向の数をnとしたときに2×n角形で、かつ、2×n角形の各辺15−1〜15−8が各層11〜14のうちいずれかの強化繊維と直交する締結用の孔15が設けられた構造部材10と、締結用の孔15に係合する2×n角形の係合部としての多角形部31bを有する締結具30とを具備する。【選択図】図1
FASTENING STRUCTURE, STRUCTURAL MEMBER, FASTENER, MOVABLE BODY, AND FASTENING METHOD
締結構造、構造部材、締結具、移動体及び締結方法
2021-06-17
Patent
Electronic Resource
Japanese
IPC: | F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile / B64C AEROPLANES , Flugzeuge |
STAND FOR FASTENER FASTENING TOOL AND FASTENER FASTENING METHOD
European Patent Office | 2022
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