Writing instruments resistant to temperature and pressure differences

Abstract

The invention provides a temperature-difference-resisting and pressure-difference-resisting writing tool. A writing part and an ink storage part are arranged at the two ends of a pen holder of the tool correspondingly, a pen point is locally inserted in the writing part, a first partition plate and a second partition plate of an adjusting part are arranged at an interval to form an air partition layer, an adjusting channel comprises a first ventilation pipe and a second ventilation pipe, the first ventilation pipe is arranged on the first partition plate, and the second ventilation pipe is arranged on the second partition plate; the first ventilation pipe and the second ventilation pipe are in inserted connection, and a first gap is arranged between the mutual inserted-connection portions; and the first partition plate is in contact with ink of the ink storage part, the second partition plate is close to the writing part, an ink feeder penetrates the adjusting part and the adjusting channel, a second gap is arranged between the ink feeder and the first partition plate, and an air guide pipe is arranged on the second partition plate and extends to the air partition layer. The temperature-difference-resisting and pressure-difference-resisting writing tool is large in ink capacity, small in amount of residual ink and smooth and even in writing, and even if the exterior temperature and the exterior pressure are greatly changed, ink is not prone to being leaked. The temperature-difference-resisting and pressure-difference-resisting writing tool is concise and stable in structure, resistant to pressure difference and temperature difference and convenient to transport; and the ink utilization rate is high, use is convenient, the waste is reduced, and environment pollutions are reduced.

Description

technical field [0001] The invention relates to the technical field of daily necessities, in particular to the technical field of office supplies, in particular to a writing implement resistant to temperature difference and pressure difference. Background technique [0002] Writing instruments such as marker pens, whiteboard pens, highlighters, etc. usually use roll-wrapped cores or cotton tubes as ink storage media. However, the use of roll cores or cotton tubes as the ink storage medium usually has the following disadvantages: First, the use of roll cores or cotton tubes as the ink storage medium, because the volume of the roll core or cotton tube itself, stores ink is very limited. Secondly, with the writing tool that uses roll-wrapped core or cotton tube as the ink storage medium, as the writing continues during the writing process, the ink output per unit writing length will gradually decrease, and the written handwriting will gradually fade. Another disadvantage of wr...

AI Technical Summary

Problems solved by technology

However, the use of roll core or cotton tube as the ink storage medium usually has the following disadvantages: First, the use of roll core or cotton tube as the ink storage medium, because of the volume of the roll core or cotton tube itself, the stored ink is very limited

However, the ink supply mechanism of this gas-liquid exchange guides the air through the capillary channel. When the pressure in the ink tube changes, the ink enters the liquid storage chamber through the capillary channel. The liquid storage chamber is provided with an inverted V-shaped anti-flow part surrounding the ink supply channel. Complexity, high precision requirements, and difficult manufacturing

[0004] The U.S. Patent No. US6,095,707 and the U.S. Patent Application Publication No. US20030068191A1 both design a straight liquid writing instrument with a capillary reservoir. Around, when the external temperature and pressure change is small, the capillary reservoir can absorb the excess released from the ink tube to prevent leakage, but when the external temperature and pressure change greatly, it is easy to leak ink

[0005] The Chinese patent application with publication number CN1749029A and publication number CN101032905A has designed a straight-liquid writing tool with a plurality of connecting pipes, the connecting pipes are inserted in the ink absorbing body and communicate with the ink in the ink pipe, and the nib is inserted in the ink absorbing body. In the body, but this design is easy to cause ink leakage under the condition of external negative pressure

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