| 摘要 |
A capless writing implement (1) having a writing body (5) disposed in a shaft tube (2) so that the pen tip part (6) of the writing body (5) can be extended and retracted from the tip opening of the shaft tube (2), comprising an inner cap (20) formed of a rubber material or an elastic resin material which is fitted to the tip opening of the shaft tube (2), the inner cap (20) further comprising a closing part (21) having a slit (25) allowing the pen tip part (6) to be extended and retracted therethrough and closing the tip opening which is formed on the extension side of the pen tip part in the axial direction of the shaft tube and a forward projected (27) swelled toward the tip opening which is formed at the outer peripheral part of the closing part (21), characterized in that the inner cap (20) is installed in the shaft tube so that a force is applied, in the closed state of the slit (25), from the outer periphery to the inside of the forward projected part (27) in a direction generally perpendicular to a slit surface.
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