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Writing instruments resistant to temperature and pressure differences

A technology for writing implements and temperature difference resistance, which is applied to writing utensils, ink pens with ink storage tubes in the pen holder, printing, etc., which can solve the problems of difficult manufacturing, complex design, and high precision requirements

Active Publication Date: 2018-02-16
NINGBO WUYUN PEN MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Writing instruments resistant to temperature and pressure differences
  • Writing instruments resistant to temperature and pressure differences
  • Writing instruments resistant to temperature and pressure differences

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] See figure 1 As shown, in the first specific embodiment of the present invention, the temperature difference and pressure difference resistant writing tool of the present invention includes a penholder 1, a water diversion core 2, a pen tip 3, and an adjusting part 4. The lower part of the penholder 1 is provided with a writing part 11, The pen head 3 is partially inserted in the writing part 11, and a pen cap 10 can also be provided. The pen cap 10 is sleeved on the writing part 11. The pen head 3 is located in the pen cap 10, and the upper part of the pen shaft 1 is provided with an ink storage part 12, the ink storage part 12 is filled with ink 13, and the regulating part 4 includes a first partition 41 and a second partition 42. A first partition 41 and a second partition 42 pass through the water-inducing core 2, the upper part of the water-inducing core 2 is in contact with the ink 13, and the lower part of the water-inducing core 2 is in contact with the upper part...

Embodiment 2

[0074] See figure 2 As shown, the structure and working principle of the second specific embodiment of the present invention are similar to those of the first specific embodiment of Embodiment 1, except for the following differences:

[0075] The width of the first gap 46 is 1.5 mm, the thickness is 0.15 mm, and the height is 0.1 mm; the width of the second gap 52 is 1.5 mm, the thickness is 0.15 mm, and the height is 1.5 mm;

[0076] In addition, the buffer storage part 5 is provided in the writing part 11 and wraps a part of the water guiding core 2 located in the writing part 11. The buffer storage part 5 may be a porous ink adsorption structure, and the pores therein constitute an air passage connecting the adjustment part 4 and the outside atmosphere. Of course, other structures can also be adopted so that the buffer storage portion 5 is gas-path connected to the regulating portion 4 and the outside atmosphere, for example, a micro-channel for gas passage is provided between ...

Embodiment 3

[0080] See image 3 As shown, the structure and working principle of the third specific embodiment of the present invention are similar to that of the second specific embodiment of Embodiment 2, except for the following differences:

[0081] The first gap 46 adopts Figure 1B The shape shown is annular, the width of the first gap 46 is 2 mm, the thickness is 0.02 mm, and the height is 0.2 mm; the second gap 52 is Figure 1E The shape shown is a fan shape. The width of the second gap 52 is 0.5 mm, the thickness is 0.01 mm, and the height is 10 mm. The buffer storage part 5 is located between the first partition 41 and the second partition 42 and is wrapped in the first partition. A part of the water guiding core 2 in the air barrier 43.

[0082] In the initial state, the pressure in the ink storage portion 12 is consistent with the outside, the ink 13 in the ink storage portion 12 penetrates into the first gap 46 to form a liquid seal, and outside air cannot be freely introduced into...

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PUM

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Abstract

The invention provides a temperature and pressure difference resistant writing tool. The temperature and pressure difference resistant writing tool is characterized in that a writing part and an ink storage part are respectively arranged at the two ends of a penholder, a pen head is partially inserted into the writing part, a first partition and a second partition of an adjustment part are arranged at an interval to form a first air bound layer, the first partition is in contact with ink of the ink storage part, the second partition is adjacent to the writing part, an ink feeder penetrates the first partition, the first air bound layer and the second partition, at least one first clearance is formed in the first partition, the ink storage part is in pneumatic connection with the first air bound layer by the first clearances, at least one second clearance is formed in the second partition, and the first air bound layer is in pneumatic connection with the writing part by the second clearances. The temperature and pressure difference resistant writing tool not only is large in ink capacity, less in ink residue and smooth and uniform in writing, but also has low probability of ink leakage even in case of much external temperature and pressure changes, is simple and stable in structure, resistant to pressure and temperature difference, convenient to transport and use and high in ink utilization ratio, and reduces waste and environmental pollution.

Description

Technical field [0001] The invention relates to the technical field of daily necessities, in particular to the technical field of office supplies, and specifically refers to a writing instrument that is resistant to temperature and pressure differences. Background technique [0002] Writing tools such as marker pens, whiteboard pens, highlighters, etc. usually use roll cores or cotton tubes as ink storage media. However, the use of roll core or cotton tube as the ink storage medium usually has the following disadvantages: First, the roll core or cotton tube is used as the ink storage medium, because of the volume of the roll core or cotton tube itself, the ink stored is very limited. Secondly, in writing tools that use roll cores or cotton tubes as ink storage media, as writing progresses during the writing process, the amount of ink per unit writing length will gradually decrease, and the written handwriting will gradually become lighter. Another disadvantage of writing instrum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43K5/00
CPCB43K5/00
Inventor 闻阳闻向阳王立平
Owner NINGBO WUYUN PEN MFG