Patent ID: 8561881
Filing Date: 2013-10-22
Classification: B65D

Abstract:
1. A developed object for building a packing box, which is formed by processing a board material and comprises four segments extending in the same direction, namely a first strip segment, a second strip segment, a third strip segment, and a fourth strip segment, said first strip segment comprising: a middle-bottom board inner portion, a lower-bottom board inner portion, and an upper-bottom board inner portion that have substantially the same length in an extending direction in which the segment extends, and are continuous with one another via fold lines in said extending direction; and a first inner portion and a second inner portion that are continuous with said middle-bottom board inner portion and said upper-bottom board inner portion, respectively, at the outsides thereof via fold lines in said extending direction, the lengths of which being substantially the same as one-half of the length of said middle-bottom board inner portion in said extending direction, or a terminal inner portion which is continuous with one of said middle-bottom board inner portion and said upper-bottom board inner portion at the outside thereof via a fold line in said extending direction, the length of which being substantially the same as the length of said middle-bottom board inner portion in said extending direction, said second strip segment comprising three portions, namely a middle-bottom board portion, a lower-bottom board portion, and an upper-bottom board portion that are continuous with said middle-bottom board inner portion, said lower-bottom board inner portion, and said upper-bottom board inner portion, respectively, via fold lines conforming to their respective one sides in said extending direction, are each given substantially the shape of a square, one side of which conforming to the fold line, and are separated from one another at their sides other than the one sides conforming to the continuous fold lines, said third strip segment, which has substantially the same entire width as that of said first strip segment and is situated on an opposite side from said first strip segment with said second strip segment lying therebetween, comprising: a lower-bottom board outer portion which is continuous only with said lower-bottom board portion via a fold line; a middle-bottom board outer portion and an upper-bottom board outer portion that lie on both sides of said lower-bottom board outer portion in said extending direction, are each continuous with said lower-bottom board outer portion via a fold line, and have substantially the same length as that of said lower-bottom board outer portion in said extending direction; and a first outer portion and a second outer portion that are continuous with said middle-bottom board outer portion and said upper-bottom board outer portion, respectively, at the outsides thereof via fold lines in said extending direction, the lengths of which being substantially the same as one-half of the length of said middle-bottom board outer portion in said extending direction, or a terminal outer portion which is continuous with one of said middle-bottom board outer portion and said upper-bottom board outer portion at the outside thereof via a fold line in said extending direction, the length of which being substantially the same as the length of said middle-bottom board outer portion in said extending direction, said fourth strip segment, which is situated on an opposite side from said second strip segment with said third strip segment lying therebetween, comprising: a central buckling portion which is continuous with said lower-bottom board outer portion via a fold line, the width of which being substantially the same as one-half of one side of said lower-bottom board portion; a first lid portion and a second lid portion that lie on both sides of said central buckling portion in said extending direction, are each continuous with said central buckling portion via a fold line, are continuous with said middle-bottom board outer portion and said upper-bottom board outer portion, respectively, via fold lines, the widths of which being larger than or equal to one-half of one side of said lower-bottom board portion; and, where said third strip segment includes said first outer portion and second outer portion, a first buckling portion which is continuous with said first lid portion and said first outer portion via fold lines, the width of which being substantially the same as that of said central buckling portion and the length of which being substantially the same as that of said first outer portion in said extending direction, and a second buckling portion which is continuous with said second lid portion and said second outer portion via fold lines, the width of which being substantially the same as that of said central buckling portion and the length of which being substantially the same as that of said second outer portion in said extending direction, or, where said third strip segment includes said terminal outer portion, a terminal buckling portion which is continuous with said second lid portion and said terminal outer portion via fold lines, the width of which being substantially the same as that of said central buckling portion and the length of which being substantially the same as that of said terminal outer portion in said extending direction, said central buckling portion being formed with a first inclined fold line extending outwardly from a point of intersection of the fold lines merging with said first lid portion and said lower-bottom board outer portion, respectively, at an inclination angle of 45 degrees with respect to the fold lines, and a second inclined fold line extending outwardly from a point of intersection of the fold lines merging with said second lid portion and said lower-bottom board outer portion, respectively, at an inclination angle of 45 degrees with respect to the fold lines, said first buckling portion being formed with a fourth inclined fold line extending outwardly from a point of intersection of the fold lines merging with said first outer portion and said first lid portion, respectively, at an inclination angle of 45 degrees with respect to the fold lines, said second buckling portion being formed with a third inclined fold line extending outwardly from a point of intersection of the fold lines merging with said second outer portion and said second lid portion, respectively, at an inclination angle of 45 degrees with respect to the fold lines, said terminal buckling portion being formed with a third inclined fold line extending outwardly from a point of intersection of the fold lines merging with said terminal outer portion and said second lid portion, respectively, at an inclination angle of 45 degrees with respect to the fold lines, and a fourth inclined fold line which is orthogonal to said third inclined fold line at an edge of the terminal buckling portion opposite from the terminal outer portion-sided edge thereof, and extends therefrom toward said terminal outer portion, said central buckling portion being formed with a nearly-square hole or a nearly-square cutaway, a diagonal line of which conforming to said second inclined fold line, said second buckling portion having, where said cutaway is provided in said central buckling portion, a terminal cutaway formed at an outer edge thereof in said extending direction, a diagonal line of which conforming to said third inclined fold line, said second lid portion being formed with a cutting line for a lid for forming an opening and closing lid that overlaps to said hole or said cutaway when said second lid portion is folded over said central buckling portion on the fold line merging with said central buckling portion, said cutting line for a lid having two parallel side lines and an end line capable of being readily cut off by human hands, wherein