| 摘要 |
PROBLEM TO BE SOLVED: To obtain enough pinching force of a clip without hindering smooth installing properties of a cap. SOLUTION: A spherical part 41 is provided on the inner surface at the lower end part of a clip 4 made of a metal plate. The spherical part 41 is projected downward beyond the opening edge of a cap main body 3. A holding projection 31 is provided on the outer peripheral surface of the intermediate part of the cap main body 3. When the cap 2 is installed on the pen point side of a writing utensil main body 5, the holding projection 31 and the inner surface of the clip 4 are urged against each other and, at the same time, the outer surface of the writing utensil main body 5 and the spherical part 41 are set to be opposite to each other under a non-contact state. |
