| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that a trivial room for development is left to stability with time, the specific portion of a fine wire part is bent after a long time of use, the bent shape is kept and the seal between a sealing lid and a sealing tube part becomes slightly unstable, the bending of the fine wire part is caused through the sliding contact of the fine wire part with the inner surface of a barrel at the movement of the fine wire part to the barrel by its sliding contact resistance, and once bent, the specific portion is easily bent and finally kept bent shape. <P>SOLUTION: In a protruding and retracting type writing utensil, a writing body is so constituted as to be protruded and retracted from the fore end of the barrel by pressing a push-button member provided at the rear of the barrel, the utensil has a lid body, which opens and closed itself in interlocking with the back and forth movement of the push-button member so as to interlock the action between the lid body and the push-button member with the fine wire part under the condition that lubricant is coated or kneaded to the sliding contact portion between the fine wire part and the barrel. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
