| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simple writing instrument easy to be manufactured and having rigidity of a holder and retention force of a pencil lead which are sustainable against writing pressure, although it is a simple writing instrument constituted of a pencil lead and the holder made of paper. <P>SOLUTION: Folding lines 11a are provided at a nearly center part in the width direction of the holder 11 made of paper material along the longitudinal direction to form right/left side walls 15, and oblique folding lines 11b from a front end edge of the side walls 15 to the side end edges to form right/left folding corners 16. A pen body 12 is mounted to the nearly center part in the width direction of the holder 11 to be able to write. When the right/left folding corners 16 are folded, and when the right/left side walls 15 are bent along the folding lines 11a, the right/left side walls 15 hold the pen body, the front end edges 16a of the folding corners 16 are made to be along the longitudinal direction of the holder 11 and contact an upper part of the pen body 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
