| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a skeletal structure capable of having a state close to rigid joining easily. <P>SOLUTION: A skeletal structure F is constituted by combining a chord material 1A made of aluminum alloy and a lattice material 3A together, the chord material 1A has a chord-side knurl part 1a formed by arranging a plurality of first protrusive ridges side by side, and the chord-side knurl part 1a is formed when an extrusion shape material on which the chord material 1A is based is molded by extrusion. The lattice material 3A has a lattice-side knurl part 3a formed by arranging a plurality of second protrusive ridges side by side, and the lattice-side knurl part 3a is formed when an extrusion shape material on which the lattice material 3A is based is molded by extrusion. The chord-side knurl part 1a and lattice-side knurl part 3a are superposed at a join part between the chord material 1A and lattice material 3A, and the first protrusive ridges and second protrusive ridges are crushed at intersections of the first protrusive ridges and second protrusive ridges with fastening force of a bolt B penetrating the chord-side knurl part 1a and lattice-side knurl part 3a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
