WO2015180550A1

WO2015180550A1 - Direct-liquid writing instrument

Info

Publication number: WO2015180550A1
Application number: PCT/CN2015/077740
Authority: WO
Inventors: 王立平; 闻阳; 闻向阳
Original assignee: 宁波五云笔业有限公司; 迈博高分子材料（宁波）有限公司
Priority date: 2014-05-30
Filing date: 2015-04-29
Publication date: 2015-12-03
Also published as: CN105313536B; CN105313536A

Abstract

Disclosed is a direct-liquid writing instrument, which comprises a pen rod (1), an ink feeder (2), a pen nib (3) and an adjusting portion (4). One end of the pen rod is provided with a writing portion (11), and a part of the pen nib is inserted into the writing portion. The other end of the pen rod is provided with an ink storing portion (12). The adjusting portion is positioned in the pen rod and between the ink storing portion and the writing portion so as to realize air permeability and liquid blockage. The ink storing portion may also communicate with the external environment via an air passage provided in the writing portion to automatically adjust the pressure in the ink storing portion. The ink feeder passes through the adjusting portion with one end contacting with the ink and the other end contacting with the pen nib. The writing instrument has a simple structure, and writes fluently.

Description

Straight liquid writing instrument

Technical field

The invention relates to the technical field of office supplies, in particular to the technical field of writing instruments, in particular to a direct liquid writing tool.

Background technique

Writing instruments such as marker pens, whiteboard pens, highlighters, etc. usually use a roll core or a cotton tube as an ink storage medium. However, the use of a roll core or a cotton tube as an ink storage medium generally has the following disadvantages: First, a roll core or a cotton tube is used as the ink storage medium, and the stored ink is very limited because of the volume of the core or the tube itself. Secondly, with the writing of the core or the cotton tube as the ink storage medium, as the writing progresses, the amount of ink discharged per unit of writing length is gradually reduced, and the writing writing is gradually faded. Another disadvantage of writing instruments that use a core or cotton tube as the ink storage medium is that even when the writing quality is significantly degraded and difficult to use, typically 30% or more of the ink remains in the core or the tube. Therefore, the writing instrument which uses the wrapped core or the cotton tube as the ink storage medium has problems such as less storage of ink, variation of the amount of ink written with the writing length, and low utilization of the ink, which leads to frequent replacement of the writing instrument and inconvenience in use. Insufficient waste of ink and other materials and environmental pollution.

The liquid-liquid writing instrument has a large ink capacity and can solve the above problems in a targeted manner. For example, Japanese Patent No. 2,532, 821 discloses a direct liquid writing instrument equipped with an ink supply mechanism capable of performing gas-liquid exchange. However, the gas-liquid exchange ink supply mechanism conducts air through the capillary passage, and the ink enters the liquid storage chamber through the capillary passage when the pressure in the ink tube changes, and the liquid storage chamber is provided with an inverted V-shaped anti-flow portion surrounding the ink supply passage, and is designed. Complexity, high precision requirements, and manufacturing difficulties.

U.S. Patent No. 6,095, 707, issued to U.S. Patent No. 6,200, 098, 191, issued to U.S. Pat. Around, when the external temperature and pressure change are small, the capillary reservoir can absorb excess from the ink tube to prevent leakage, but it is easy to leak ink when the external temperature and pressure change greatly.

The Chinese patent application with the publication number CN1749029A and the publication number CN101032905A was designed. A direct-liquid writing instrument with a plurality of communicating tubes, the connecting tube is inserted in the ink absorbing body and communicates with the ink in the ink tube, and the writing head is inserted in the ink absorbing body, but the design is easy under external negative pressure Causes ink to leak.

Summary of the invention

In order to overcome the above-mentioned shortcomings in the prior art, it is an object of the present invention to provide a liquid-liquid writing instrument which not only has a large ink capacity, a small amount of residual ink, a smooth and uniform writing, but also a large change in external temperature and pressure. Not easy to leak ink.

Another object of the present invention is to provide a liquid-liquid writing instrument which not only has a large ink capacity, is less likely to leak ink, has a smooth and uniform writing, and greatly reduces the amount of residual ink.

Another object of the present invention is to provide a liquid-liquid writing tool which has a simple structure, easy availability of raw materials, and simple production.

Another object of the present invention is to provide a direct-liquid writing instrument which is structurally stable, withstanding pressure difference, temperature difference, and easy to transport.

Another object of the present invention is to provide a direct-liquid writing instrument which has a large ink capacity, high ink utilization rate, convenient use, reduced waste, and reduced environmental pollution.

In order to achieve the above object, the direct liquid writing tool of the present invention comprises a pen holder, a water guiding core and a pen head, and one end of the pen bar is provided with a writing portion, the pen tip is partially inserted in the writing portion, and the other end of the pen holder An ink storage portion is provided, wherein the direct liquid writing tool further comprises:

An adjustment portion, the adjustment portion is permeable to liquid barrier and disposed between the ink storage portion and the writing portion in the pen holder to block ink flow in the ink storage portion from the writing portion and through the a writing portion gas path connecting the ink storage portion and an external environment to automatically balance the pressure in the ink storage portion, the water guiding core penetrating the adjusting portion and the two ends of the water guiding core respectively contacting the ink and the The pen tip is used to conduct the ink to the tip.

The above "breathable liquid barrier" means that the gas can pass therethrough, and the ink (liquid) does not permeate therein without a pressure difference between the ink storage portion and the outside.

The adjustment portion may have any suitable structure. In a specific embodiment of the invention, the adjustment portion includes a gas guiding material element, and the gas guiding material element is gas permeable and disposed in the pen holder. Between the ink storage portion and the writing portion, thereby blocking ink flow in the ink storage portion to the writing portion and connecting the ink storage portion and the external environment through the writing portion air passage to automatically balance The pressure in the ink reservoir is such that the water guiding core penetrates the gas guiding material element.

The gas guiding material element may be made of any gas permeable liquid blocking material. In one embodiment of the invention, the gas guiding material element is made of a material that allows gas to pass through but the ink does not penetrate therein.

The above materials may be selected from any of the known materials having the above properties. In a specific embodiment of the invention, the material is a porous material, and the porous material is a binder fiber or a sintered plastic powder material.

The gas guiding material element may have any suitable shape, such as a layer shape, preferably a film shape, and the thickness may be between 0.2 mm and 1 mm, which is the size of the gas guiding material element in the length direction of the sheath, of course The gas guiding material element can also be thicker, for example 0.5 cm - 2 cm, or even thicker, as determined. If the film is relatively soft, such as a polytetrafluoroethylene filter film, it can be supported by a support such as the following separator.

In order to further improve the pressure regulating performance, in an embodiment of the invention, the adjusting portion further includes a first partition disposed between the ink storage portion and the gas guiding material member The water guiding core is further disposed with the first partition plate, the first partition plate is provided with a first air guiding passage, and the ink storage portion is connected to the air guiding material through the first air guiding passage gas path element.

The first air guiding channel may have any suitable structure. In a specific embodiment of the invention, the first air guiding channel is a first air guiding hole and/or a first air guiding tube.

If the structure of the first air guiding tube is adopted, the first air guiding tube may not be inserted into the air guiding material element and the ink storage portion, that is, only inserted in the first partition plate, and In a specific embodiment of the invention, the first air conduit is partially inserted in the gas guiding material element and/or the ink storage portion.

The first air guide tube inserted in the ink storage portion is provided with a first opening for guiding air, and in a specific embodiment of the present invention, the first one is inserted in the ink storage portion A first opening is provided on an end surface or a side surface of the air guiding tube.

As a variant of the first air guiding channel, in a specific embodiment of the present invention, the first partition plate is further provided with a first through hole, and the water guiding core passes through the first through hole. The first air guiding passage is disposed between the water guiding core and the first through hole.

The first air guiding channel may be formed by any suitable structure. In a specific embodiment of the invention, the cross section of the first through hole is different from the cross section of the water guiding core so as to be in the water guiding core and The first air guiding channel is formed between the first through holes.

The cross section of the first through hole may have any suitable shape. In a specific embodiment of the invention, the first through hole has a circular shape, an elliptical shape, a polygonal shape or a combination thereof. The cross section of the water guiding core may be correspondingly determined according to the cross section of the first through hole. For example, in order to form the first air guiding passage, when the cross section of the first through hole is circular, the cross section of the water guiding core may be circular but slightly smaller in size, or may be elliptical or polygonal. Or other suitable shape; when the cross section of the first through hole is elliptical, the cross-sectional shape of the water guiding core may be elliptical but slightly smaller in size, or may be circular or polygonal or other suitable shape; When the cross section of the first through hole is a polygon, the cross-sectional shape of the water guiding core may be polygonal but slightly smaller in size, or may be circular or elliptical or other suitable shape, and the like.

Alternatively, the first air guiding channel may be formed by using a first rib, and the first rib is abutted on the inner wall of the first through hole. The outer wall of the water guiding core thus forms the first air guiding passage between the water guiding core and the first through hole.

The first air guiding channels of different shapes may be obtained according to different settings of the first ribs. In a specific embodiment of the invention, the first air guiding channels are linear, non-linear or their combination.

The non-linear shape may have any suitable shape. In one embodiment of the invention, the non-linear shape is a diagonal line, a spiral shape, a double spiral shape, a ring shape, or a combination thereof.

For example, when the first rib is disposed in parallel with an axial line of the first through hole, the first air guiding passage is linear; when the first rib is opposite to the first through hole When the axially inclined straight line is disposed, the first air guiding channel is obliquely shaped; when the first protruding rib is spirally disposed along the axial direction of the first through hole, the first air guiding channel is a spiral When the first rib is disposed along the axial double spiral of the first through hole, the first air guiding channel is double spiral; when the first rib is perpendicular to the first When the through hole is axially annularly disposed, the first air guiding passage is annular, in which case the first air guiding passage may also be referred to as a zigzag shape if the first protruding rib has a zigzag cross section. Or sloped.

In order to further reduce the amount of residual ink, in a specific embodiment of the invention, the first separator is provided with an ink guiding groove toward the surface of the ink reservoir in a direction toward the water guiding core.

The shape of the ink guiding groove can be determined as needed. In an embodiment of the invention, the ink guiding groove is a spiral groove and/or a wedge groove.

In order to make the effect of reducing the amount of residual ink better, in an embodiment of the invention, the width of the ink guiding groove is gradually reduced in a direction close to the water guiding core and/or the first partition is oriented Said The surface of the ink storage portion is inclined along the direction from the ink storage portion to the writing portion, that is, the first partition plate is disposed at an acute angle to the surface of the ink storage portion and the water guiding core, so that the ink guide The height of the groove gradually becomes smaller in a direction close to the water guiding core.

In order to further improve the pressure regulating performance, in an embodiment of the invention, the adjusting portion further includes a second partition disposed between the gas guiding material element and the writing portion, The water guiding core is further disposed with the second partition plate, and the second partition plate is provided with a second air guiding passage, and the gas guiding material element is connected to the writing portion through the second air guiding passage gas path.

The second spacer may have other technical features similar to the first spacer described above, and the second air guide passage may have other technical features similar to the first air guide passage described above. E.g:

The second air guiding channel may have any suitable structure. In a specific embodiment of the invention, the second air guiding channel is a second air guiding hole and/or a second air guiding tube.

If the structure of the second air guiding tube is adopted, the second air guiding tube may not be inserted into the air guiding material element and the writing portion, that is, only inserted in the second partition, and In a specific embodiment of the invention, the second air guiding tube is partially inserted in the gas guiding material element and/or the writing portion.

The second air guiding tube inserted in the writing portion is provided with a second opening for guiding air, and in a specific embodiment of the invention, the second portion is inserted in the gas guiding material element A second opening is provided on an end surface or a side surface of the air guiding tube.

As a variant of the second air guiding channel, in a specific embodiment of the present invention, the second partition plate is further provided with a second through hole, and the water guiding core passes through the second through hole. The second air guiding passage is disposed between the water guiding core and the second through hole.

The second air guiding channel may be formed by any suitable structure. In a specific embodiment of the present invention, the cross-sectional shape of the second through hole is different from the cross-sectional shape of the water guiding core so as to be in the water guiding. The second air guiding passage is formed between the core and the second through hole.

The cross section of the second through hole may have any suitable shape. In a specific embodiment of the invention, the second through hole has a circular shape, an elliptical shape, a polygonal shape or a combination thereof. The cross section of the water guiding core may be correspondingly determined according to the cross section of the second through hole. For example, in order to form the second air guiding passage, when the cross section of the second through hole is circular, the cross section of the water guiding core may be circular but slightly smaller in size, or may be elliptical or polygonal. Or other suitable shape; when the cross section of the second through hole is elliptical, the cross-sectional shape of the water guiding core may be elliptical but slightly smaller. Or may be circular or polygonal or other suitable shape; when the cross section of the second through hole is polygonal, the cross-sectional shape of the water guiding core may be polygonal but slightly smaller, or may be circular or elliptical Or other suitable shape, and so on.

Alternatively, the second air guiding channel may be formed by using a second rib, and the second rib is abutted on the inner wall of the second through hole. The outer wall of the water guiding core thus forms the second air guiding passage between the water guiding core and the second through hole.

The second air guiding channels of different shapes may be obtained according to different arrangements of the second ribs. In a specific embodiment of the invention, the second air guiding channels are linear, non-linear or their combination.

For example, when the second rib is disposed in parallel with the axial direction of the second through hole, the second air guiding passage is linear; when the second rib is opposite to the second through hole When the axially inclined straight line is disposed, the second air guiding channel is obliquely shaped; when the second protruding rib is spirally disposed along the axial direction of the second through hole, the second air guiding channel is a spiral Forming; when the second rib is disposed along the axial double spiral of the second through hole, the second air guiding channel is double spiral; when the second rib is perpendicular to the second When the through hole is axially annularly disposed, the second air guiding passage is annular, in which case the second air guiding passage may also be referred to as a zigzag shape if the second protruding rib has a zigzag cross section. Or sloped.

In order to further reduce the amount of residual ink, in a specific embodiment of the invention, the second separator is provided with an ink guiding groove toward the surface of the gas guiding material element in a direction toward the water guiding core.

In order to make the effect of reducing the amount of residual ink better, in an embodiment of the invention, the width of the ink guiding groove is gradually reduced in a direction close to the water guiding core and/or the second partition is oriented a surface of the gas guiding material element is disposed obliquely in a direction from the ink storage portion to the writing portion, that is, the second separator is disposed at an acute angle to a surface of the gas guiding material element and the water guiding core, thereby The height of the ink guiding groove gradually becomes smaller in a direction approaching the water guiding core.

In an embodiment of the present invention, the adjustment portion further includes a protection tube disposed on the second spacer and interposed in the gas guiding material component. The water guiding core is disposed in the protection tube.

In order to further improve the pressure regulating performance, in an embodiment of the invention, the adjusting portion further includes a third partition disposed in the first partition and the gas guiding material element Interposed therebetween and spaced apart from the first partition to form a gas barrier between the first partition and the third partition, the water guiding core also passing through the third partition, the first The third partition plate is provided with a third air guiding passage, and the ink storage portion is connected to the air partition layer through the first air guiding passage gas path, and the air separating layer is connected to the air passage of the third air guiding passage A gas guiding material element.

The third spacer may have other technical features similar to the first spacer described above, and the third air guiding passage may have other technical features similar to the first air guiding passage described above. E.g:

The third air guiding passage may have any suitable structure. In a specific embodiment of the invention, the third air guiding passage is a third air guiding hole and/or a third air guiding tube.

If the structure of the third air guiding tube is adopted, the third air guiding tube may not be inserted into the gas barrier layer and the gas guiding material element, that is, only inserted in the third partitioning plate, and In a specific embodiment of the invention, the third air conduit is partially interposed in the air barrier layer and/or the gas guiding material element.

The third air conduit inserted in the air barrier is provided with a third opening for guiding air, and in a specific embodiment of the invention, the third is inserted in the air barrier A third opening is provided on an end surface or a side surface of the air guiding tube.

As a modification of the third air guiding channel, in a specific embodiment of the present invention, the third partition plate is further provided with a third through hole, and the water guiding core passes through the third through hole. The third air guiding passage is disposed between the water guiding core and the third through hole.

The third air guiding channel may be formed by any suitable structure. In a specific embodiment of the present invention, the cross section of the third through hole is different from the cross section of the water guiding core so as to be in the water guiding core and The third air guiding passage is formed between the third through holes.

The cross section of the third through hole may have any suitable shape. In a specific embodiment of the invention, the third through hole has a circular shape, an elliptical shape, a polygonal shape or a combination thereof. The cross section of the water guiding core may be determined correspondingly according to the cross section of the third through hole. For example, in order to form the third air guiding passage, when the cross section of the third through hole is circular, the cross section of the water guiding core may be circular but slightly smaller in size, or may be elliptical or polygonal. Or other suitable shape; when the cross section of the third through hole is elliptical, the cross-sectional shape of the water guiding core may be elliptical but slightly smaller in size, or may be circular or polygonal or other suitable shape; The cross section of the third through hole is a polygon The cross-sectional shape of the water guiding core may be polygonal but slightly smaller in size, or may be circular or elliptical or other suitable shape, and the like.

Alternatively, the third air guiding channel may be formed by using a third rib, and the third rib is abutted on the inner wall of the third through hole. The outer wall of the water guiding core thus forms the third air guiding passage between the water guiding core and the third through hole.

The third air guiding channel of different shapes may be obtained according to different settings of the third rib. In a specific embodiment of the invention, the third air guiding channel is linear, non-linear or their combination.

For example, when the third rib is disposed in parallel with an axial straight line of the third through hole, the third air guiding passage is linear; when the third rib is opposite to the third through hole When the axially inclined straight line is disposed, the third air guiding channel is obliquely shaped; when the third protruding rib is spirally disposed along the axial direction of the third through hole, the third air guiding channel is a spiral When the third rib is disposed along the axial double spiral of the third through hole, the third air guiding channel is double spiral; when the third rib is perpendicular to the third When the axial direction of the through hole is annularly arranged, the third air guiding channel is annular, in which case, if the cross section of the third rib is zigzag, the third air guiding channel may also be called zigzag Or sloped.

In order to further reduce the amount of residual ink, in a specific embodiment of the invention, the third separator is provided with an ink guiding groove toward the surface of the gas barrier layer in a direction toward the water guiding core.

In order to make the effect of reducing the amount of residual ink better, in an embodiment of the invention, the width of the ink guiding groove is gradually reduced in a direction close to the water guiding core and/or the third partition is oriented a surface of the gas barrier layer is disposed obliquely along a direction from the ink storage portion to the writing portion, that is, a surface of the third separator facing the gas barrier layer is disposed at an acute angle to the water guiding core, so that The height of the ink guiding groove gradually becomes smaller in a direction approaching the water guiding core.

In order to further improve the ink leakage prevention capability of the liquid-liquid writing tool of the present invention, in a specific embodiment of the present invention, the liquid-liquid writing tool further includes:

a buffer storage portion provided in the writing portion and covering at least a portion of the water guiding core located in the writing portion to absorb excess ink oozing out from the water guiding core.

The buffer storage portion may only wrap a portion of the water guiding core located in the writing portion, but in order to further improve the ink leakage preventing capability of the direct liquid writing tool of the present invention, in a specific embodiment of the present invention, The buffer storage portion also wraps a portion of the pen tip located in the writing portion.

In order to utilize resources reasonably and reduce waste, in an embodiment of the invention, the other end of the pen holder is detachably provided with the ink storage portion. For example, the other end of the pen holder is provided with the ink storage portion by snapping or screwing.

The beneficial effects of the present invention mainly lie in:

1. The direct-liquid writing instrument of the present invention blocks the ink in the ink storing portion to the writing portion and automatically balances the pressure in the ink storing portion by providing an adjusting portion for the gas permeable liquid barrier between the ink storing portion and the writing portion. The design is unique and ingenious, not only the ink capacity is large, the amount of residual ink is small, the writing is smooth and uniform, and even if the external temperature and pressure change greatly, it is not easy to leak ink, which is suitable for large-scale popularization and application.

2. The first separator of the direct-liquid writing implement of the present invention is provided with an ink guiding groove toward the surface of the ink storing portion in the direction toward the water guiding core, so that the ink easily passes through the ink guide when the ink is less in the ink storing portion. The siphon siphon penetrates into the water guiding core to form a continuous ink supply to the water guiding core. Such a structure is advantageous for writing the ink in the ink storage portion as much as possible, and the design is unique and ingenious, and the ink capacity is large, the ink is not easily leaked, and the writing is smooth and uniform. And greatly reduce the amount of residual ink, suitable for large-scale promotion and application.

3. The direct-liquid writing instrument of the present invention blocks the ink in the ink storing portion to the writing portion and automatically balances the pressure in the ink storing portion by providing an adjusting portion for the gas permeable liquid barrier between the ink storing portion and the writing portion. The design is unique and ingenious, the structure is simple, the raw materials are easy to obtain, the production is simple, and it is suitable for large-scale promotion and application.

4. The direct-liquid writing instrument of the present invention blocks the ink in the ink storing portion to the writing portion and automatically balances the pressure in the ink storing portion by providing an adjusting portion for the gas-permeable liquid-repellent portion between the ink storing portion and the writing portion. The design is unique and ingenious, the structure is stable, the pressure difference is poor, the temperature difference is poor, and the transportation is convenient, which is suitable for large-scale promotion and application.

These and other objects, features and advantages of the invention are apparent from the description and appended claims appended claims

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front cross-sectional view showing a first embodiment of the present invention.

Figure 2 is a front cross-sectional view showing a second embodiment of the present invention.

Figure 3 is a front cross-sectional view showing a third embodiment of the present invention.

Figure 4 is a front cross-sectional view showing a fourth embodiment of the present invention.

4A is a top plan view of a first through hole, a water guiding core, and a first air guiding passage according to a fourth embodiment of the present invention.

4B is a front cross-sectional view showing the second through hole, the second rib, the water guiding core, and the second air guiding passage of the fourth embodiment of the present invention.

4C, 4D, and 4E are top plan views of other embodiments of the first through hole, the water guiding core, and the first air guiding passage of the present invention.

4F, 4G, and 4H are schematic front cross-sectional views showing other embodiments of the second through hole, the second rib, the water guiding core, and the second air guiding passage of the present invention.

Figure 5 is a front cross-sectional view showing a fifth embodiment of the present invention.

Figure 6 is a front cross-sectional view showing a sixth embodiment of the present invention.

Figure 7 is a front cross-sectional view showing a seventh embodiment of the present invention.

Figure 7A is a top plan view of a first separator of a seventh embodiment of the present invention.

Fig. 7B is a top plan view showing the ink guiding groove of the first separator of the present invention as a spiral groove.

(Symbol Description)

1 pen 11 writing department

12 ink storage section 13 ink

2 water core 3 pen head

4 adjustment part 41 gas guiding material element

42 first partition 43 second partition

44 first air duct 45 first opening

46 second air guiding hole 47 second air guiding tube

48 protection tube 49 first through hole

51 first air guiding passage 52 second through hole

53 second rib 54 first air vent

55 third partition 56 gas compartment

57 third air guiding hole 58 second air guiding channel

5 buffer storage section 6 ink guiding slot

61 wedge groove 62 spiral groove

detailed description

In order to more clearly understand the technical content of the present invention, the following embodiments are specifically described.

Example 1

Referring to FIG. 1, in the first embodiment of the present invention, the liquid-liquid writing instrument of the present invention comprises a pen holder 1, a water guiding core 2, a writing head 3 and an adjusting portion 4. The lower portion of the pen holder 1 is provided with a writing portion 11 The pen tip 3 is partially inserted into the writing portion 11, the upper portion of the pen holder 1 is provided with an ink storage portion 12, the ink storage portion 12 is filled with the ink 13, and the adjustment portion 4 is constituted by the gas guiding material member 41. The water guiding core 2 is bored with the gas guiding material member 41, and the upper portion of the water guiding core 2 is in contact with the ink 13, and the lower portion of the water guiding core 2 is in contact with the upper portion of the writing head 3 to constitute an ink discharge passage. The lower inner side of the pen holder 1 of the direct-liquid writing instrument is provided with a reinforcing rib (not shown), and the pen tip 3 is caught between the lower portion of the pen piece 1 designed with the reinforcing ribs, and the inner side of the pen piece 1 and the reinforcing rib and the pen tip 3 are left. The lower space constitutes a passage that is connected to the outside atmosphere (of course, the writing head 3 and the writing portion 11 may be sealingly connected, and the other portions of the writing portion 11 are ventilated at the other positions). The gas guiding material element 41 is made of a porous material, and is made of a porous material. In the embodiment, the adhesive polypropylene fiber is used, and the ink 13 does not permeate in the case where the ink storage portion 12 and the outside have no pressure difference. The porous material realizes a pressure regulating function of the ink storage portion 12 and the outside.

In the initial state, the pressure in the ink storage portion 12 coincides with the outside, and since the ink 13 cannot penetrate the gas guiding material member 41, the ink 13 forms a liquid seal on the gas guiding material member 41, and the outside air cannot be freely introduced into the ink storing portion 12. At the time of writing, the ink 13 in the ink storage portion 12 is conducted to the pen tip 3 through the water guiding core 2, and the pressure in the ink storing portion 12 gradually decreases as the ink 13 is led out, and the negative pressure difference between the ink storing portion 12 and the outside is sufficiently large. At this time, the liquid seal on the gas guiding material member 41 is opened by the external pressure, and the air enters the ink storing portion 12 from the outside through the gas guiding material member 41 until the inside and the outside are rebalanced, and the liquid seal on the gas guiding material member 41 is formed again. This process is repeated until the ink 13 is written.

When a large positive pressure difference is formed in the ink storage portion 12 from the outside, if the air or ink storage portion 12 is heated, the ink 13 is led out of the ink storage portion 12, and a portion thereof is forcibly pressed into the gap of the gas guiding material member 41. However, the gas guiding material member 41 does not permeate into the writing portion 11, and a part thereof oozes out through the water guiding core 2, but since the total amount of ink derived by the above two routes is small, it does not leak to the outside through the writing head 3. When the external environment returns to normal, the ink storage portion 12 forms a negative pressure difference to the outside, at which time the ink 13 temporarily stored in the gas guiding material member 41 and the oozing water guiding core 2 is partially returned to the ink storage. Department 12. At the time of writing, the remaining ink 13 stored in the gas guiding material member 41 and the oozing water guiding core 2 is preferentially released to the writing tip 3 by the water guiding core 2 at the time of writing.

Example 2

Referring to FIG. 2, in a second embodiment of the present invention, the liquid-liquid writing instrument of the present invention comprises a pen holder 1, a water guiding core 2, a writing head 3, an adjusting portion 4, and a buffer storage portion 5, and a lower portion of the pen holder 1 A writing portion 11 is provided, and the pen tip 3 is partially inserted into the writing portion 11. The upper portion of the pen holder 1 is provided with an ink storage portion 12, the ink storage portion 12 is filled with ink 13, and the adjusting portion 4 is composed of a first partition 42 and air guiding. The material element 41 and the second partition 43 are formed. The water guiding core 2 is provided with a first partition plate 42, a gas guiding material member 41 and a second partition plate 43, and an upper portion of the water guiding core 2 is in contact with the ink 13, and a lower portion of the water guiding core 2 is in contact with an upper portion of the writing head 3 to constitute an ink discharge passage. The buffer storage portion 5 is provided in the writing portion 11 and wraps a part of the water guiding core 2 located in the writing portion 11. The lower inner side of the pen holder 1 of the direct-liquid writing instrument is provided with a reinforcing rib (not shown), and the pen tip 3 is caught between the lower portion of the pen piece 1 designed with the reinforcing ribs, and the inner side of the pen piece 1 and the reinforcing rib and the pen tip 3 are left. The space below constitutes a channel that connects to the outside atmosphere. The buffer storage portion 5 may be a porous ink storage structure in which the pores constitute an air passage connecting the regulating portion 4 to the outside atmospheric air passage. Of course, other structural arrangements may be adopted such that the buffer storage portion 5 is connected to the outside atmosphere, for example, between the buffer storage portion 5 and the outer wall of the water guiding core 2 or the inner wall of the sheath 1 to allow gas to pass therethrough. Gap. The gas guiding material element 41 is made of a porous material, and is made of a porous material. In the embodiment, the adhesive polypropylene fiber is used, and the ink 13 does not permeate in the case where the ink storage portion 12 and the outside have no pressure difference. The first air guiding channel is the first air guiding tube 44. The first air guiding tube 44 is inserted into the first partition plate 42 and the two ends are respectively inserted into the ink storage portion 12 and the air guiding material element 41, and inserted into the ink storage portion. The end surface of the first air guiding tube 44 in the 12 is provided with a first opening 45, and the second air guiding passage is a second air guiding hole 46. The porous material passes through the first air guiding tube 44 of the first partition 42 and the gas guiding material element 41. The second air guiding hole 46 in the second partition plate 43 realizes a pressure adjusting function of the ink storing portion 12 and the outside.

In the initial state, the pressure in the ink storage portion 12 coincides with the outside. Since the ink 13 cannot penetrate the gas guiding material member 41, the ink 13 forms a liquid seal in the first air guiding tube 44 of the first separator 42, and the outside air cannot be freely introduced. Ink storage unit 12. At the time of writing, the ink 13 in the ink storage portion 12 is conducted to the pen tip 3 through the water guiding core 2, and the pressure in the ink storing portion 12 gradually decreases as the ink 13 is led out, and the negative pressure difference between the ink storing portion 12 and the outside is sufficiently large. When the liquid seal in the first air guiding tube 44 is pressed externally Opening, air passes from the outside through the second air guiding hole 46 of the second partition 43 , through the gas guiding material element 41 and the first air guiding tube 44 of the first partition 42 into the ink storage portion 12 until the inner and outer parts are rebalanced, the first guide The liquid seal in the air tube 44 is formed again. This process is repeated until the ink 13 is written.

When a large positive pressure difference is formed in the ink storage portion 12 from the outside, if the air or ink storage portion 12 is heated, the ink 13 is led out of the ink storage portion 12, and a portion is passed through the first air guiding tube 44 of the first partition 42 It is forcibly pressed into the gap of the gas guiding material member 41 but does not penetrate the gas guiding material member 41 to enter the writing portion 11, and a part is oozing out through the water guiding core 2 to be absorbed by the buffer storage portion 5, thereby avoiding excess ink passage. The tip 3 leaks to the outside. When the external environment returns to normal, the ink storage portion 12 forms a negative pressure difference to the outside, and the ink 13 temporarily stored in the gas guiding material member 41 and the buffer storage portion 5 is partially returned to the ink storage portion 12. At the time of writing, these inks 13 stored in the gas guiding material member 41 and the buffer storing portion 5 are released to the writing head 3 by the water guiding core 2 at the time of writing.

Example 3

Referring to FIG. 3, the third embodiment of the present invention is similar to the structure and working principle of the second embodiment of the second embodiment. The difference is that the second air guiding passage of the second partition 43 is formed by the second air guiding hole. 46 is changed to the second air guiding tube 47 and inserted into the air guiding material member 41, and the end surface of the second air guiding tube 47 inserted in the air guiding material member 41 is provided with a second opening (not shown), and the adjusting portion 4 further includes a protective tube 48 disposed on the second partition 43 and interposed in the gas guiding material member 41. The water guiding core 2 is disposed in the protective tube 48, and the protective tube 48 is tightly fitted with the water guiding core 2, Thereby, the ability of the regulating portion 4 to withstand the external negative pressure is increased.

Example 4

Referring to FIG. 4, the fourth embodiment of the present invention is similar to the structure and working principle of the second embodiment of the second embodiment. The difference is that the first air guiding tube 44 is not provided, and the first partition 42 is also provided with The first through hole 49, the water guiding core 2 is disposed through the first through hole 49. Specifically, the cross section of the water guiding core 2 is circular, and the cross section of the first through hole 49 is elliptical, so that the first air guiding passage 51 is disposed at the water guiding core. Between the 2 and the first through hole 49, the cross section thereof is a meniscus shape, as shown in FIG. 4A (the cross section of the first through hole 49 and the cross section of the water guiding core 2 may take other shapes, for example, the first through hole 49. The cross section is circular, and the cross section of the water guiding core 2 is also circular but slightly smaller, as shown in Fig. 4C; for example, the cross section of the first through hole 49 is circular, and the cross section of the water guiding core 2 is hexagonal, such as 4D; for another example, the cross section of the first through hole 49 is six sides The water guiding core 2 is not provided with a second air guiding hole 46, the second partitioning plate 43 is further provided with a second through hole 52, and the water guiding core 2 is disposed with the second through hole 52. Specifically, the cross section of the water guiding core 2 is circular, and the second through hole 52 is also circular in cross section and is provided with a second rib 53 which is disposed in parallel with the axial direction of the second through hole 52, so that the second air guiding is performed. The passage 58 is disposed between the water guiding core 2 and the second through hole 52, which is linear, as shown in FIG. 4B (the second rib 53 can also adopt other settings, for example, the second rib 53 is opposite to the second pass The axial direction of the hole 52 is obliquely arranged, and the second air guiding passage 58 is obliquely shaped as shown in FIG. 4F; for example, the second protruding rib 53 is spirally disposed along the axial direction of the second through hole 52, and the second air guiding is performed. The channel 58 is spiral, as shown in FIG. 4G; for example, the second rib 53 is annularly disposed perpendicular to the axial direction of the second through hole 52, and the second air guiding passage 58 is annular, as shown in FIG. 4H; The protective tube 48; the buffer storage portion 5 also wraps a part of the writing head 3 located in the writing portion 11, that is, the contact portion between the upper portion of the writing head 3 and the lower portion of the water guiding core 2 rises to the buffer storage The inner portion 5, this structure is more advantageous to overcome the problems of the ink 13 leaking from the tip 3 by a pressure difference or temperature difference between the ink storage portion 12 and the outside caused.

Example 5

Referring to FIG. 5, the fifth embodiment of the present invention is similar to the structure and working principle of the second embodiment of the second embodiment. The difference is that the gas guiding material member 41 is sintered in the present embodiment using powder polyethylene. Made of plastic, the first air guiding passage of the first partition 42 is changed from the first air guiding tube 44 to the first air guiding hole 54, thereby simplifying the structure of the spare parts and making the assembly of the writing instrument easier.

Example 6

Referring to FIG. 6, the sixth embodiment of the present invention is similar to the structure and working principle of the fifth embodiment of the fifth embodiment. The difference is that the third partition 55 is added to the adjusting portion 4, and the third partition is added. The plate 55 is disposed between the first partition 42 and the gas guiding material member 41 and spaced apart from the first partition 42 to form a cavity between the third partition 55 and the first partition 42. Layer 56. The water guiding core 2 is also provided with a third partition 55, and the third partition 55 is provided with a third air guiding passage, and specifically the third air guiding passage is a third air guiding hole 57. The ink storage portion 12 is connected to the gas barrier layer 56 through the first air guiding hole 54, and the air barrier layer 56 is connected to the gas guiding material member 41 through the third air guiding hole 57. This gas barrier 56 adds additional cushioning to the adjustment portion 4, improving the ability of the liquid-liquid writing instrument to withstand external temperature and pressure changes. When the ink 13 overflows from the ink storage portion 12 due to external pressure or temperature change, first enters the first The gas barrier layer 56 formed by the separator 42 and the third separator 55 does not directly enter the gas guiding material member 41, thereby increasing the buffering effect.

Example 7

Referring to FIG. 7, the seventh embodiment of the present invention is similar to the structure and working principle of the second embodiment of the second embodiment. The difference is that the gas guiding material member 41 is sintered in a porous manner in the present embodiment. The first baffle 42 is disposed toward the surface of the ink storage portion 12 in the direction toward the water-conducting core 2 with the ink guiding groove 6 . Specifically, the ink guiding groove 6 is a wedge-shaped groove 61 , and the wedge-shaped groove 61 The width gradually becomes smaller in the direction of the water guiding core 2 (see FIG. 7A), and the first partition 42 is inclined toward the surface of the ink storage portion 12 in the direction from the ink storage portion 12 to the writing portion 11, that is, the surface and the water guiding core 2 is set at an acute angle so that the height of the wedge groove 61 gradually becomes smaller in the direction approaching the water guiding core 2 (see Fig. 7) (the ink guiding groove 6 may also be other shapes such as the spiral groove 62 shown in Fig. 7B). When the ink 13 is less in the ink storage portion 12 and the writing instrument is placed transversely, the ink 13 is easily siphoned into the water guiding core 2 through the wedge groove 61, thereby forming a continuous ink supply to the water guiding core 2, and such a structure is also advantageous for the ink. The ink 13 in the storage unit 12 is written as much as possible.

The direct liquid writing tools of the embodiments 1-7 of the present invention have been tested to have superior performance, good writing quality, uniform ink discharge, good front and rear consistency, stable ink discharge amount, long unit writing length, less residual ink, and ink utilization. High efficiency, good environmental performance; temperature difference resistance (high temperature 50 °C storage and transportation) is good, no leakage of ink; good pressure difference performance, no leakage of ink; pen tip down inverted without leakage of ink.

It should be noted that the ink adsorption capacity of the buffer storage portion 5 is preferably not stronger than the ink adsorption capacity of the water guiding core 2, and the buffer storage portion 5 seldom absorbs the ink 13 from the water guiding core 2 in a general storage and writing state, but when When the ink storage portion 12 has a pressure difference or a temperature difference from the outside, and the excess ink 13 is oozing out from the water guiding core 2, the excess ink 13 can be absorbed by the buffer storage portion 5.

According to the present invention, not only the ink capacity is large, the amount of residual ink is small, the writing is smooth and uniform, and the ink is not easily leaked even if the external temperature and pressure vary greatly. And greatly reduce the amount of residual ink. The structure is simple, the raw materials are easy to obtain, and the production is simple. Stable structure, pressure difference, temperature difference, easy to transport. High ink utilization, ease of use, reduced waste and reduced environmental pollution.

Those skilled in the art should understand that the embodiments of the present invention described in the above description and the accompanying drawings are only by way of illustration and not limitation.

Thus, it is apparent that the objects of the present invention have been achieved in a complete and effective manner. The function and structural principle of the present invention have been shown and described in the embodiments, and the embodiments may be modified arbitrarily without departing from the principles. Accordingly, the present invention includes all modifications that come within the scope of the claims and the scope of the claims.

Claims

A straight liquid writing tool comprising a pen holder, a water guiding core and a pen head, wherein one end of the pen bar is provided with a writing portion, the pen head is partially inserted in the writing portion, and the other end of the pen bar is provided with an ink storage portion , characterized in that the direct liquid writing instrument further comprises:

An adjustment portion, the adjustment portion is permeable to liquid barrier and disposed between the ink storage portion and the writing portion in the pen holder to block ink flow in the ink storage portion from the writing portion and through the a writing portion gas path connecting the ink storage portion and an external environment to automatically balance the pressure in the ink storage portion, the water guiding core penetrating the adjusting portion and the two ends of the water guiding core respectively contacting the ink and the The pen tip is used to conduct the ink to the tip.
A direct-liquid writing instrument according to claim 1, wherein said adjusting portion includes a gas guiding material member, said gas guiding material member is gas permeable and disposed in said pen holder at said ink storage portion and The writing portions thereby block the flow of ink in the ink storage portion to the writing portion and connect the ink storage portion and the external environment through the writing portion air passage to automatically balance the pressure in the ink storage portion The water guiding core passes through the gas guiding material element.
The direct liquid writing instrument according to claim 2, wherein said gas guiding material member is made of a material that allows gas to permeate but ink does not permeate therein.
The direct liquid writing instrument according to claim 3, wherein said material is a porous material, and said porous material is a binder fiber or a sintered plastic powder material.
A direct liquid writing instrument according to claim 2, wherein said adjustment portion further includes a first spacer disposed between said ink reservoir and said gas guiding material member The water guiding core is further disposed with the first partition plate, the first partition plate is provided with a first air guiding passage, and the ink storage portion is connected to the air guiding material through the first air guiding passage gas path element.
The direct liquid writing instrument according to claim 5, wherein the first air guiding passage is a first air guiding hole and/or a first air guiding tube.
A direct-liquid writing instrument according to claim 6, wherein said first air guiding tube is partially interposed in said air guiding material member and/or said ink storing portion.
A direct-liquid writing instrument according to claim 7, wherein a first opening is provided in an end surface or a side surface of said first air guiding tube inserted in said ink storing portion.
The direct-liquid writing instrument according to claim 5, wherein the first partition is further provided with a first through hole, the water guiding core penetrating the first through hole, the first air guiding A passage is disposed between the water guiding core and the first through hole.
The direct liquid writing instrument according to claim 9, wherein a cross section of the first through hole is different from a cross section of the water guiding core to form a gap between the water guiding core and the first through hole The first air guiding channel.
The direct liquid writing instrument according to claim 10, wherein said first through hole has a circular shape, an elliptical shape, a polygonal shape or a combination thereof.
The liquid-liquid writing instrument according to claim 9, wherein the inner wall of the first through hole is provided with a first rib, and the first rib abuts against the outer wall of the water guiding core so as to be The first air guiding channel is formed between the water guiding core and the first through hole.
The direct liquid writing instrument according to claim 12, wherein said first air guiding passage is linear, non-linear or a combination thereof.
The direct liquid writing instrument according to claim 13, wherein the non-linear shape is a diagonal line, a spiral shape, a double spiral shape, a ring shape, or a combination thereof.
The direct liquid writing instrument according to claim 5, wherein the first partition plate is provided with an ink guiding groove toward a surface of the ink storing portion in a direction toward the water guiding core.
The direct liquid writing instrument according to claim 15, wherein the ink guiding groove is a spiral groove and/or a wedge groove.
A direct-liquid writing instrument according to claim 15, wherein a width of said ink guiding groove is gradually reduced in a direction close to said water guiding core and/or said surface is along said ink storing portion The direction of the writing portion is inclined.
The direct liquid writing instrument according to claim 2, wherein said adjusting portion further comprises a second partition disposed between said gas guiding material member and said writing portion, The water guiding core is further disposed with the second partition plate, and the second partition plate is provided with a second air guiding passage, and the gas guiding material element is connected to the writing portion through the second air guiding passage gas path.
A direct-liquid writing instrument according to claim 18, wherein said adjusting portion further comprises a protective tube disposed on said second partition and interposed in said gas guiding material member The water guiding core is disposed in the protection tube.
A direct liquid writing instrument according to claim 5, wherein said adjustment portion is further included a third partition disposed between the first partition and the gas guiding material element and spaced apart from the first partition so as to be in the first partition and the Forming a gas barrier between the third partitions, the water guiding core further passes through the third partition, the third partition is provided with a third air guiding passage, and the ink storage portion passes through the first guiding The gas passage gas path connects the gas barrier layer, and the gas barrier layer connects the gas guiding material element through the third gas guiding passage gas path.
The direct liquid writing instrument according to claim 1, wherein the direct liquid writing instrument further comprises:

a buffer storage portion provided in the writing portion and covering at least a portion of the water guiding core located in the writing portion to absorb excess ink oozing out from the water guiding core.
A direct-liquid writing instrument according to claim 21, wherein said buffer storage portion further wraps a portion of said writing head located in said writing portion.
A direct-liquid writing instrument according to claim 1, wherein said other end of said pen holder is detachably provided with said ink storing portion.