Importance

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Abstract

Disclosed herein is a slide type writing tool having a dryness prevention unit. The writing tool includes a hollow shaft (10) having a nib hole, with shutter shaft seats protruding from the inner wall of the shaft. A cartridge (20) is secured to the shaft. A knock part is inserted into an insert hole formed in the shaft, and a pair of pressing parts is provided on a nib extension shaft of the cartridge. A rear O-ring (30) surrounds an end of the cartridge. A spherical shutter (40) is held in the rear O-ring (30), and has a spherical shutter part to isolate a nib from the exterior. A front O-ring (50) contacts the shutter part and the nib hole. A spring contacts at a first end thereof a lower end of a step of the cartridge, and at a second end thereof a step of the rear O-ring.

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First Claim