| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage from being inflicted to a human body or clothes by the sharp edge of a writing ball point part by rotating a manipulator to cause the mutual engagement of the fitting part of a ball part with the fitting part of a bulged part, of a clip so that the ball part of the clip does not deflect from a holder cylindrical face, only when the writing ball point part comes to a position in which it juts out of the tip aperture of a holder cylinder. SOLUTION: A bulged part 11 is formed at two points on the outer periphery 2 slightly to the rear part of a rear holder 2 and a fitting part comprising a projecting part 11a and a recessed part 11b is formed on the front face of the bulged part 11. In addition, a fitting part comprising a projecting part 13a and a recessed part 13b is formed on the face behind the ball part 13 of a clip 12 so that the projection 11a may become engaged/disengaged with the recessed part 13b by the circumferential movement of the clip 12 following the rotation of a manipulator 15. Further, when one 1a of ball point pen writing members is projected, the ball part 13 of the clip 12 is mutually fitted into the bulged part 11 on the peripheral face of the rear holder 2 to prevent the clip 12 from being thrust into a chest pocket. Thus it is possible to protect a human body or clothes against damage to be caused by the sharp edge of a writing ball point part. |
