| 摘要 |
<p>PROBLEM TO BE SOLVED: To utilize a case also as an about half-sized drawing container in the case of folding the container by imaging four continuous line segments for bisecting the four surfaces of a rectangular parallelepiped, and making a fold line in one of the line segments and each score on the other three segments in a case being a rectangular parallelepiped in covered state with a lid. SOLUTION: In a rectangular parallelepiped in a covered state with a lid 3, wherein four continuous line segments are imaged to divide the four surfaces of a rectangular parallelepiped including a lid 3 into two. With regard to these line segments, a fold line 2 is made at the line segment of the four surfaces of the rectangular parallelepiped, and each score 1 is made at the line segments on the remaining three surfaces. These fold line 2 and score 1 permit both sides of the line segments to be joined and separated together readily. In the case where it is used as a drawing case not being folded at it were, the score 1 and fold line 2 are joined at its both sides, and when used as a drawing case of an about half-size, folding is effected by separating both ends of the scores 1 and fold line 2.</p> |
