Liquid blocking device for direct-liquid type pen

Abstract

The invention discloses a liquid blocking device for a direct-liquid type pen, and belongs to the technical field of office stationery. The liquid blocking device comprises a pen point connecting end,a blade grid group and a cylindrical seat, wherein a straight groove is longitudinally formed in the blade grid group, a zigzag groove is formed in the cylindrical surface of the cylindrical seat, the zigzag groove is formed by uniformly distributing two or more waveforms in the circumferential direction, one end of the zigzag groove is connected with the straight groove, and the other end of thezigzag groove extends to the bottom surface of the cylindrical seat to form the cooperation of the tail end of the zigzag groove and an air inlet of an ink bin. According to the technical scheme, thezigzag groove forms a zigzag air flow channel in the direct liquid type pen, so that the air flow channel of the direct liquid type pen placed in any direction is provided with a section of upward channel, ink overflowing from the air inlet of the ink bin can only be retained in the section, close to the air inlet, of the zigzag air flow channel, and it is eradicated that ink overflows from the air inlet and seeps into an area between blade grids and a shell; and in the using process, the overflowing ink retained in the air flow channel flows back to the ink bin through the air inlet by meansof the difference between the internal air pressure and the external air pressure, ink waste is avoided, and the service life is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of writing and drawing utensils and office stationery, and in particular relates to a liquid stopper for a straight liquid pen. Background technique [0002] The straight liquid pen is basically composed of a nib, a liquid blocker, an ink tank and a casing. The liquid blocker includes a nib connection end, a leaf grid group, and a cylindrical seat. The three are connected and matched from front to back. It is used to install the nib. The bottom of the cylindrical seat is matched with the ink tank. There is an ink channel in the liquid blocker to connect the nib with the ink tank. At the same time, an airflow channel is set between the ink tank and the nib through the liquid blocker; when used as a straight liquid pen At this time, the ink in the liquid trap is used, and the ink tank replenishes the ink to the liquid trap. At this time, the air in the ink tank is also thinned out, causing the external air pre...

AI Technical Summary

Problems solved by technology

[0002] The straight liquid pen is basically composed of a nib, a liquid blocker, an ink tank and a casing. The liquid blocker includes a nib connection end, a leaf grid group, and a cylindrical seat. The three are connected and matched from front to back. It is used to install the nib. The bottom of the cylindrical seat is matched with the ink tank. There is an ink channel in the liquid blocker to connect the nib with the ink tank. At the same time, an airflow channel is set between the ink tank and the nib through the liquid blocker; when used as a straight liquid pen At this time, the ink in the liquid trap is used, and the ink tank replenishes the ink to the liquid trap. At this time, the air in the ink tank is also thinned out, causing the external air pressure to be greater than the air pressure in the ink tank, and the external air will enter the ink through the airflow channel. Therefore, during the use of the direct liquid pen, the air-water exchange in the ink chamber is completed, and the air in the airflow channel continues to discharge into the ink chamber while the ink is replenished to the liquid blocker. At this time, the ink chamber The ink inside will not overflow from the airflow channel; but when the direct liquid pen is not in use, the air pressure in the ink chamber is the same as the external atmospheric pressure, affected by the gravity of the earth, when the direct liquid pen tip is placed downward, the ink chamber in the ink chamber will Under the action of gravity, ink can easily overflow from the airflow channel into the liquid blocker, and when the overflowed ink enters the grid area, it will disperse. Only by keeping the tip of the straight fluid pen up when it is not in use can the ink tank be completely avoided. The ink inside overflows from the airflow channel, but this is very difficult for ordinary users to do, so in the prior art, after a period of time, the ink of the straight liquid pen often enters the leaves of the liquid trap from the tail of the liquid trap. The area between the grille and the shell slowly accumulates, affecting the appearance and wasting ink. This problem has affected the marketing of liquid pens to a certain extent. Many countries even restrict the import of liquid pens.

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