| 摘要 |
PROBLEM TO BE SOLVED: To provide a writing implement which enables removable fitting of a cap by screwing without providing the fore end part of a holder tube with an external thread part engaging with an internal thread part formed in the cap, in regard to the writing implement wherein the cap is fitted by screwing it removably to the fore end part of the holder tube so as to protect a writing tip provided at the fore end of the holder tube. SOLUTION: Projections for screwing which engage with the internal thread part of the cap are provided on the outer peripheral surface of the fore end part of the holder tube corresponding to the internal thread part. In this structure, the cap is screwed on the fore end part of the holder tube by fitting the projections and the internal thread part to each other by screwing. |
