Capillary system type writing tool

Abstract

The invention relates to a capillary system type writing tool. The capillary system type writing tool is improved on the basis of an existing pen shell, an ink feeder, a pen point and an ink storing part, namely, a temporary ink storing channel which reciprocates in the length direction of the ink feeder is arranged in the ink storing part; the temporary ink storing channel comprises an ink returning channel of which an upper end port communicates with an ink supplying chamber through a liquid sealing port, an air guide channel of which a lower end port communicates with an atmosphere communication chamber, an a temporary ink storing chamber which is connected between a lower end port of the ink returning channel and an upper end port of the air guide channel; and the ink returning channelis a narrow and long channel which can realize capillary effect. According to the capillary system type writing tool adopting the abovementioned structure, ink stored in the temporary ink storing chamber can be fully recycled by double effects of air pressure and capillary suction force under each negative pressure of the ink supplying chamber. Therefore, sufficient space is ensured for storing ink after the air pressure of the temporary ink storing chamber changes in a plurality of times, and as a result, the problem of ink leaking can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of writing instruments, in particular to a direct liquid writing instrument. Background technique [0002] At present, people have developed various direct-liquid writing instruments, which are provided with an ink supply chamber for storing ink, and the ink in the ink supply chamber is transferred to the nib at the end of the water guide core through the water guide core to realize stable ink supply. Its advantage is that the ink capacity is large, and its disadvantage is that it is prone to ink leakage. [0003] In order to solve the problem of ink leakage, various solutions have been developed. For example, the patent application number is CN201410242248.9 (notification number is CN105313536A) invention patent "straight liquid writing implement" discloses a straight liquid writing implement, comprising a pen holder, a water diversion core, a nib and an adjustment part, and one end of the pen holder is pr...

AI Technical Summary

Problems solved by technology

[0004] Although the setting of the above adjustment part can prevent ink leakage by temporarily storing ink, its ink return effect is poor, and only a small amount of ink close to the water diversion core will be reused. Therefore, after many changes in air pressure, the ink in the adjustment part will If the ink cannot be reused in time and the ink storage is sufficient, it will eventually lead to ink leakage

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