Writing tool with anti-drying device

Abstract

The invention discloses a writing tool with an anti-drying device, which comprises a pen holder, a pen point, an ink tube and a pressing rod which are arranged in the pen holder, and the writing toolwith the anti-drying device further comprises the anti-drying device, the anti-drying device comprises a switch sleeve, a lifting cap, a tapping spring, a rotary sealing cap, a sealing pad and a supporting spring; wherein the switch sleeve is inserted into the pen holder, elastic parts are arranged on the two sides of the upper end of the switch sleeve respectively, a lifting groove extending to the elastic parts is further formed in the switch sleeve, and a rotating groove is formed in the side portion of the lower end of the switch sleeve. The lifting cap is inserted into the switch sleeve,supporting protrusions are arranged on the two sides of the upper end of the lifting cap respectively, and the rotary sealing cap is used for rotating to open and close the inlet and outlet hole.

Description

technical field [0001] The present invention is a writing implement equipped with an anti-drying device to prevent the tip of the pen from drying out, especially, to prevent the water-based or volatile ink in fluorescent or marker pens with the function of pushing out or retracting from drying out. A writing instrument with a dry-proof device that turns inside the lower part of the barrel to seal off the inner space. Background technique [0002] Usually composed of fluorescent and writing tools that use water-based or volatile ink such as marker pens, repeatedly press the upper end of the pressing part, and press the pen tip outward and put the pen tip inward as the press is pressed. [0003] In order to prevent the ink from drying out, Korean Patent No. 10-0556569 discloses a writing instrument with a structure to prevent drying out, that is, a pen holder is provided inside the pen holder to prevent the inflow of external air, and is rotated on one side and installed on th...

AI Technical Summary

Problems solved by technology

[0004] However, in order to open and close the entry and exit of the nib, the traditional anti-drying structure writing instrument needs to rotate the spare part close to the lower end of the pen holder to close the entrance. When the rotating spare part is operated, it cannot rotate smoothly due to friction, and the spare part is worn or frequently operated due to friction. Damaged spare parts lead to poor sealing function, so there is no way to prevent ink from drying out

[0005] In order to prevent the ink from drying out, air is prevented from flowing in along the nib body of the nib in the ink cartridge, and the rubber ring that is in contact with the nib body prevents the ink from drying out, but the elevating ink cartridge and the rubber ring rub against each other Causes the nib to go in and out of the operation is not smooth

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