| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional decorative object that can, while making one of its faces wavy, make sides opposing the adjoining sides of the wavy curved face linear without making the faces adjoining the wavy curved face complementary curved faces.SOLUTION: A three-dimensional decorative object 10 has: a front face 11, which is a wavy concave face; left and right flanks 12a and 12b, which are arrayed on the two sides in the transverse direction, namely the flat direction of the front face 11, via arcuate fold lines 13a and 13b whose sides respectively oppose the fold lines 13a and 13b are linear; and a ridge fold line 14 linking a point on the flank 12a or 12b disposed on at least one of the two flanks 12a and 12b and a point on the fold line 13a or 13b. By disposing such a ridge fold line 14, stresses in that position are eased, the arcuate state of fold lines 13a or 13b is maintained, and the wavy concave face of the front face 11 is kept free from the influence of distortion.SELECTED DRAWING: Figure 1 |
