| 摘要 |
PROBLEM TO BE SOLVED: To provide a hollow pipe assembly structure which can be easily formed with excellent accuracy. SOLUTION: A three-dimensional structure 10 is temporarily positioned, and joined with excellent accuracy at the fitting position by inserting projecting engagement parts 50 of two-dimensional structures 12A, 12C and hollow pipes 14A, 14B, 14C in engagement hole parts 52 formed at fitting position of the two-dimensional structures 12A, 12B formed of straight hollow pipes folded with excellent accuracy. The three-dimensional structure can be easily assembled and formed with excellent accuracy without using a large jig etc., for temporary stop at the fitting position.
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