CN110561945A

CN110561945A - Scribble instrument of writing

Info

Publication number: CN110561945A
Application number: CN201810576514.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Maybe Polymer Material (ningbo) Co Ltd
Current assignee: Maybe Polymer Material (ningbo) Co Ltd
Priority date: 2018-06-06
Filing date: 2018-06-06
Publication date: 2019-12-13
Also published as: WO2019233132A1

Abstract

The invention relates to a coating and writing tool, in particular to a coating and writing tool provided with a porous body, which comprises a coating and writing head; a liquid storage pipe; a porous body in communication with the write head, the porous body being in communication with ambient atmosphere; the porous body is communicated with the liquid storage pipe through the gas-liquid exchanger, and the gas-liquid exchanger comprises a liquid guide channel and a gas guide channel; the porous body comprises a buffer part, an incremental capillary part and a liquid collecting part, and each part has different capillary pressure, so that the release of the coating liquid is effectively controlled, and the leakage of the coating liquid is prevented; simple structure, smooth scribbling and writing and convenient manufacture.

Description

Scribble instrument of writing

Technical Field

The invention relates to a painting tool, in particular to a direct liquid type painting tool in the technical field of painting of writing, cosmetics, correction fluid, liquid glue and the like.

Background

In the art of writing and painting, porous materials are widely used, such as in watercolor pens, markers, eyeliners, as a material for absorbing and containing liquids. In the prior art, the most common porous material is a roll core formed by coating fiber bundles with a film, a penholder is inserted and a coating head is inserted when the roll core is used, and two ends of the roll core are communicated with the atmosphere, so that air is discharged to the two ends when liquid is injected, the liquid is diffused to the two ends, and the liquid is released when coating and writing are also facilitated. However, the liquid output of the coiled core gradually decreases with the increase of the service time, thereby causing the blur of the handwriting, and the coiled core has the defect of large residual liquid amount. For this reason, new writing tools have been studied to overcome the disadvantages of the core wrap as a liquid storage medium.

Patent document 1 (japanese utility model publication No. 56-7504) discloses a direct liquid type writing instrument using two porous materials with different porosities as liquid absorbing materials, in which a second liquid absorbing material receives writing liquid from a liquid supply port at the bottom of a liquid storage tube and supplies the liquid to a writing head, a gas guide tube communicating with the liquid storage tube penetrates the second liquid absorbing material and abuts against the first liquid absorbing material, when the writing liquid is excessive in the second liquid absorbing material, the writing liquid is conducted to the first liquid absorbing material, and the gas guide tube is sealed with liquid after the content of the writing liquid in the first liquid absorbing material is increased, thereby achieving the purpose of automatic liquid supply. The disadvantage of this patent is that the gas-conducting tube is only sealed by the first liquid-absorbing material when it absorbs a sufficient amount of liquid for application from the second liquid-absorbing material, and the amount of liquid for application required in the liquid-absorbing material is large at the time of sealing. Furthermore, the applicator head must work through the first wicking material to the second wicking material, which is long and costly. Patent document 2(CN1749029A) discloses a direct liquid type writing tool, which also uses two porous materials with different porosities as the writing liquid adsorbent, and the principle is that a plurality of communicating pipes with the same axial length are led out from the bottom of a liquid storage pipe, penetrate through a low-density writing liquid adsorbent and then are connected to a high-density writing liquid adsorbent, and the rear end of a writing head is inserted into the high-density writing liquid adsorbent, thereby achieving the purpose of shortening the length of the writing head. However, this patent has several disadvantages: 1. the patent sets a plurality of communicating pipes on the circumference taking a pen point as an axis, but the inner diameter of the pen holder of a plurality of painting tools is small and is usually less than 8mm, the space occupied by the gas circuit and the outer wall of the painting liquid absorbent is deducted, and the space left for the painting liquid absorbent of the low density part is very limited, under the condition, the plurality of communicating pipes are inserted into and penetrate through the painting liquid absorbent of the low density part, so the manufacture is quite difficult, and the liquid leakage is easily caused by the damage of the low density part when the plurality of communicating pipes are inserted into the small space; 2. when the liquid storage pipe leads the coating liquid outwards due to the change of the external environment, the coating tool is easy to leak due to the insufficient capacity of the low-density coating liquid adsorbent; 3. according to the patent, the coating and writing head and the communicating pipes are inserted into the high-density part and the communicating pipes are arranged on the circumference taking the coating and writing head as the axis, the high-density part must have large diameter and volume, and the communicating pipes can be sealed only when gaps in the high-density part are blocked by coating liquid, so that a large amount of coating liquid in the liquid storage pipe is led out to the high-density part, on one hand, a user can consider that the filling liquid amount is insufficient to reduce the user experience, on the other hand, after the coating liquid in the liquid storage pipe is completely coated, the high-density part has the effect equivalent to a wrapping core, and the defects of the traditional wrapping core type coating and writing tool can be embodied; 4. the coating liquid in the coating tool can not be directly conducted to the pen point from the communicating pipe, but the coating liquid can pass through the high-density part coating liquid adsorbing body, and in the coating application of liquid chalk, metal ink pen and the like needing to lead out the coating liquid containing particles, the particles can be filtered by the high-density part coating liquid adsorbing body, so that the coating can not be performed.

The two patent technologies all need to derive more scribbling liquid from the liquid storage pipe and just can reach the purpose of liquid seal communicating pipe, even not scribbling yet, the scribbling liquid volume that leaves in the liquid storage pipe is less, and the user can mistake and think scribbling liquid and adorn less, or when can't see scribbling liquid in the liquid storage pipe, though still there are a lot of scribbling liquid in the scribbling liquid adsorbent, the user can misunderstand that scribbling liquid has run out, and these two kinds of circumstances all lead to relatively poor user experience.

Disclosure of Invention

In order to solve the problems of the traditional coil core coating writing tool and some past direct liquid type coating writing tools, the invention provides a coating writing tool, which comprises a coating writing head; a porous body in communication with the write head, the porous body being in communication with the outside atmosphere; a gas-liquid exchanger; and a liquid storage pipe communicated with the porous body through the gas-liquid exchanger. The porous body is provided with a buffer part close to the liquid storage pipe, an increasing capillary part arranged below the buffer part and a liquid collecting part arranged below the increasing capillary part; the rising capillary pressure of the gradually-increased capillary part is gradually increased from the buffer part to the liquid collecting part; the gas-liquid exchanger is provided with a liquid guide channel and a gas guide channel, and the front end of the gas guide channel is positioned at or below the front end of the buffer part; the rising capillary pressure of the buffer part is 50 to 85% of the rising capillary pressure of the liquid collecting part, and the capacity of the coating liquid of the liquid collecting part is 2 to 25% of the capacity of the liquid storage tube.

Further, the front end of the gas guide channel is disposed in the incremental capillary at a position between one third from the front end of the incremental capillary portion and the front end of the liquid guide channel.

Further, the porous body is a porous material made of fibers.

Further, the cross sectional area of the connection between the incremental capillary part and the liquid collecting part is 25% -75% of the cross sectional area of the connection between the incremental capillary part and the buffer part.

Furthermore, the liquid guide channel is arranged in the gas guide channel and is a hollow tube or a water guide core.

Further, the air guide channel is arranged in the liquid guide channel, and the liquid guide channel is a hollow annular pipe or a hollow water guide core.

Furthermore, the liquid guide channel and the air guide channel are arranged in parallel.

Further, the rear end of the air guide channel extends into the liquid storage pipe.

Further, the gas-liquid exchanger is located at the radial center of the porous body.

Further, the liquid guiding passage is located at the radial center of the porous body.

Further, the applicator further includes a porous-body accommodating chamber, and the liquid-collecting portion and the gradually-increasing capillary portion are formed by radially pressing the porous material from the outside to the inside by the porous-body accommodating chamber.

Further, the liquid-collecting portion and the incremental capillary portions are formed by radially pressing the porous material from the inside to the outside from the rear of the applicator head.

Further, the front end of the liquid guide passage is communicated with the coating head through the porous body.

Further, the air guide channel is arranged in the liquid guide channel, the liquid guide channel is a hollow water guide core, and the rear ends of the liquid guide channel and the air guide channel are positioned at the middle upper part of the ink tube.

Further, the porous body has an absorption portion disposed below the liquid collection portion.

According to the technical scheme of the invention, a user can conveniently observe the liquid applying amount, the user experience is improved, and ink leakage under abnormal conditions can be effectively prevented.

Drawings

The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a writing tool according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a cross section of a liquid-liquid exchanger in the painting tool according to the embodiment of the present invention.

FIG. 3 is a schematic diagram of a writing tool according to a second embodiment of the present invention.

FIG. 4a is a schematic diagram of a writing tool according to a third embodiment of the present invention.

Fig. 4b is a schematic cross-sectional view of a liquid-liquid exchanger in a writing instrument according to a third embodiment of the present invention.

FIG. 5 is a schematic diagram of a writing tool according to a fourth embodiment of the present invention.

FIG. 6a is a schematic diagram of a writing tool according to a fifth embodiment of the present invention.

Fig. 6b is a schematic cross-sectional view of a liquid-liquid exchanger in a writing instrument according to a fifth embodiment of the present invention.

FIG. 7a is a schematic diagram of a writing tool according to a sixth embodiment of the present invention.

Fig. 7b is a schematic cross-sectional view of a liquid-liquid exchanger in a writing instrument according to a sixth embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a writing tool according to a seventh embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a writing tool according to an eighth embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a writing tool according to a ninth embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a writing tool according to a tenth embodiment of the present invention.

Detailed Description

The following description is given by way of specific embodiments, and the advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention.

The terms "upper", "lower", "front" and "rear" used in the following description should not be construed as limiting the present invention. In the invention, "lower" and "front" refer to one end of the painting and writing head, and "upper" and "rear" refer to one end of the liquid storage tube.

The normal condition or the condition not particularly noted in the present invention generally means a case where the room temperature is a normal atmospheric pressure, and the abnormal condition means a case where the outside temperature or pressure deviates from the normal condition. The rising capillary pressure P in the present invention is defined as the pressure generated by the rising height h of the writing liquid when the porous material (liquid collecting part or buffer part) with sufficient length (generally 5-10cm is required), under normal conditions, one end of the porous material just contacts the level of the horizontal writing liquid and stands vertically for 30 minutes,

P＝ρgh,

Wherein rho is the density of the coating liquid, g is the gravity acceleration, and h is the rising height of the coating liquid

The method for measuring the rise height h of the masking liquid is defined in the invention as follows:

1) Putting the porous material with the length of H into the coating liquid to absorb the liquid until the porous material is saturated, and testing the saturated absorption weight W of the porous material₀，

2) Using the same porous material and the same coating liquid, putting one end of the porous material just contacting the liquid surface of the coating liquid, standing for 30 minutes vertically, testing the liquid absorption weight W,

3) The h value is calculated as: h ═ W/W₀)x H

First embodiment

Fig. 1 is a schematic structural diagram of a writing tool according to a first embodiment of the present invention. Referring to FIG. 1, the present embodiment provides an application tool comprising an application write head 1; a porous body 2 communicating with the applying head 1, the porous body 2 communicating with the outside atmosphere; a gas-liquid exchanger 3; and a liquid storage pipe 4 communicating with the porous body 2 through the gas-liquid exchanger 3. Wherein, the porous body 2 is provided with a buffer part 20 close to the liquid storage pipe 4, an increasing capillary part 21 arranged below the buffer part 20 and a liquid collecting part 22 arranged below the increasing capillary part 21; the rising capillary pressure of the ascending capillary part 21 increases from the buffer part 20 to the liquid collecting part 22; the gas-liquid exchanger 3 has an air guide passage 30 and a liquid guide passage 31, the front end of the air guide passage 30 is disposed at the front end of the buffer section 20 or below, the rising capillary pressure of the buffer section 20 is 50-85% of the rising capillary pressure of the liquid collecting section 22, and the capacity of the liquid collecting section 22 for the writing liquid is 2-25% of the capacity of the liquid storage tube.

The position where the front end of the air guide channel 30 is disposed at or below the front end of the buffer 20 includes the front end position of the buffer 20, and preferably the front end of the air guide channel 30 is disposed between the position of one third of the increasing capillary 21 from the front end of the increasing capillary 21 and the front end of the liquid guide channel 31. Thus, it is possible to ensure a sufficient coating liquid storage capacity between the front end of the air guide passage 30 and the rear end of the buffer section 20, and further ensure that ink leakage due to insufficient buffer capacity occurs in an abnormal situation.

The capillary pressure of the buffer section 20 is 50% to 85% of the capillary pressure of the liquid collecting section 22, and the capillary pressure of the buffer section 20 is 50%, 55%, 60%, 65%, 70%, 75%, 80%, and 85% of the capillary pressure of the liquid collecting section 22. When the ratio of the rising capillary pressure of the buffer section 20 to the rising capillary pressure of the liquid collecting section 22 is larger, the coating liquid concentrated in the liquid collecting section 22 is more easily absorbed into the increment capillary section 21 and the buffer section 20. When the ratio of the rising capillary pressure of the buffer section 20 to the rising capillary pressure of the liquid collecting section 22 is smaller, the coating liquid concentrated in the liquid collecting section 22 is more difficult to be absorbed into the increasing capillary section 21 and the buffer section 20.

When the ratio of the rising capillary pressure of the buffer section 20 to the rising capillary pressure of the liquid collecting section 22 exceeds 85%, a large amount of the application liquid is absorbed into the increasing capillary section 21 and the buffer section 20, and the application liquid in the liquid storage tube is greatly reduced, making it difficult for the user to accurately determine the usage amount of the application liquid. Moreover, since the increment capillary 21 and the buffer 20 absorb a large amount of the coating liquid under normal conditions, the buffer capacities of the increment capillary 21 and the buffer 20 are greatly reduced, and ink leakage may occur due to insufficient buffer capacity under abnormal conditions.

when the ratio of the rising capillary pressure of the buffer section 20 to the rising capillary pressure of the liquid collecting section 22 is less than 50%, the ink absorption capacity of the buffer section 20 is too small, and in an abnormal situation, the excess scribbling liquid in the liquid collecting section 22 cannot be absorbed by the increment capillary section 21 and the buffer section 20 promptly and quickly, resulting in ink leakage.

The ratio of the capillary pressure increase of the buffer part 20 to the capillary pressure increase of the liquid collecting part 22 in the present embodiment is preferably in the range of 60% to 70%.

The capacity of the liquid collecting portion 22 is not more than 25% of the capacity of the reservoir, and for example, the capacity of the liquid collecting portion 22 is 25%, 20%, 15%, 10%, 5%, 2% of the capacity of the reservoir 4. According to the scribbling tool of the embodiment, the liquid amount of the liquid storage pipe 4 transmitted to the liquid collecting part 22 after the scribbling tool is assembled can be effectively limited, the liquid amount in the liquid storage pipe 4 before scribbling can be enabled to be not less than 75% of the capacity of the liquid storage pipe, a user can conveniently observe the scribbling liquid amount, and user experience is improved.

After the coating and writing tool is assembled, the coating and writing liquid in the liquid storage tube 4 is directly or indirectly guided into the porous body 2 through the liquid guide channel 31 of the gas-liquid exchanger 3, is enriched in the liquid collection part 22 with the highest ascending capillary pressure, meanwhile, negative pressure is gradually formed in the liquid storage tube 4, and air enters the liquid storage tube 4 through the gas guide channel 30 of the gas-liquid exchanger 3. As the amount of the coating liquid in the porous body 2 increases, the coating liquid gradually occupies the capillary space near the front end of the air guide channel 30, the air guide channel 30 is gradually sealed, air no longer enters the liquid storage tube 4, and the coating liquid reaches equilibrium between the liquid storage tube 4 and the porous body 2. When in painting, the painting liquid on the painting head 1 is consumed, the liquid guide channel 31, the liquid collection part 22 or the incremental capillary part 21 supplies ink for the painting head 1, the painting liquid amount in the porous body 2 is reduced until the painting liquid in the capillary gap near the front end of the air guide channel 30 is replaced by air, the outside air enters the air guide channel 30 of the gas-liquid exchanger 3 through the air passage in the penholder and the capillary gap without the painting liquid in the porous body 2 and enters the liquid storage tube 4, the negative pressure in the liquid storage tube 4 is reduced, and the painting liquid is guided out from the liquid guide channel 31 and is supplemented to the porous body 2 until the painting liquid in the porous body 2 is increased and the air guide channel 30 is sealed by the liquid again. This process is repeated until the marking fluid is used up.

According to the writing instrument of the present invention, the front end of the air guide channel 30 is disposed at the front end of the buffer section 20 or below, the front end of the liquid guide channel 31 is inserted into the tapered capillary portion 21 or the liquid collecting section 22, the rising capillary pressure of the buffer section 20 is 50% to 85% of the rising capillary pressure of the liquid collecting section 22, and the writing liquid capacity of the liquid collecting section 22 is not more than 25% of the liquid storage tube capacity. Therefore, the coating liquid in the porous body 2 is mainly concentrated in the liquid collecting portion 22 under normal conditions. So that most of the coating liquid, typically 75% or more, remains in the reservoir 4 before it is applied.

Under abnormal conditions, such as the liquid storage tube 4 is heated during transportation or use, the air in the liquid storage tube 4 expands and the negative pressure decreases, at this time, the coating liquid in the liquid storage tube 4 is led out to the porous body 2, and under the action of the rising capillary pressure, the coating liquid is absorbed by the liquid collecting part 22, the ascending capillary part 21 and the buffer part 20 until the coating liquid is rebalanced between the porous body 2 and the liquid storage tube 4, so that the leakage of the coating liquid from the coating head 1 of the coating tool can be effectively prevented. When the abnormal condition disappears, the negative pressure in the reservoir 4 increases, and the writing liquid returns from the porous body 2 to the reservoir 4 through the gas-liquid exchanger 3 until the balance between the porous body 2 and the reservoir 4 is restored.

< porous body, cushioning part, enlarged capillary part, or liquid collecting part >

The porous body 2 of the present invention includes a buffer 20, a liquid collector 22, and a gradual increase capillary 21 provided between the buffer 20 and the liquid collector 22, wherein the capillary pressure of the gradual increase capillary 21 increases from the buffer 20 to the liquid collector 22, and the capillary pressure of the buffer 20 increases from 50% to 85% of the capillary pressure of the liquid collector 22.

In the porous body 2 of the present invention, the cross-sectional area of the border between the ascending capillary portion 21 and the liquid collecting portion 22 is 25% to 75%, preferably 35% to 50%, of the cross-sectional area of the border between the ascending capillary portion 21 and the buffer portion 20, that is, the cross-sectional area of the rear end of the liquid collecting portion 22 is 25% to 75%, preferably 35% to 50%, of the cross-sectional area of the front end of the buffer portion 20. The smaller the value, the larger the capillary pressure difference distance between the buffer section 20 and the liquid collecting section 22.

The liquid-collecting portion 22 has a density of 0.08 to 0.5g/cc, the cushioning portion 20 has a density of 0.03 to 0.25g/cc, and g/cc is g/cc. When the density of the cushion portion 20 is less than 0.03, the cushion portion is difficult to mold and difficult to manufacture. When the density of the cushioning portion 20 is greater than 0.25, the liquid absorbing ability of the cushioning portion 20 becomes too strong, so that the amount of ink stored in the cushioning portion 20 becomes too large in a normal state, and the leakage preventing ability of the porous body 2 in an abnormal state is lowered. Preferably 0.06-0.16 g/cc.

The porous body 2 may further include a porous-body housing chamber 5, and the liquid trap portion 22 may be formed by radially pressing the porous material from the outside to the inside from the porous-body housing chamber 5.

The porous body 2 is made of filaments or staple fibers by bonding or thermal bonding.

The fiber fineness of the porous body 2 is 0.2-30 denier. Denier is the mass in grams of 9000m long fibers at a nominal moisture regain. The fiber fineness of the porous body 2 produced by the present invention is preferably 1.5 to 10 deniers, and most preferably 2 to 6 deniers.

The fibrous component of the porous body 2 is a single-component fiber, or a bicomponent fiber, or a mixture of a single-component fiber and a bicomponent fiber.

Similar to the structure of the painting tool using the common porous body, i.e. the core roll, as the ink storage medium, both ends of the porous body in the present invention, i.e. the rear end of the buffer part 20 and the front end of the liquid collecting part 22, are communicated with the atmosphere, so as to smoothly perform gas-liquid exchange and rapidly absorb and release the painting liquid. The porous body in the present invention is a porous material made of fibers, and the porous body is made of bonded fibers or unbonded fibers, but may be made of sponge, porous plastic, felt, or the like. Through certain process control, the axial strength of the bonded fiber porous body can be higher than the radial strength, so that the radial compression and the axial assembly are facilitated. Holes may be formed simultaneously with the bonding of the fibers to facilitate the insertion of the gas-liquid exchanger 3 and the applicator head 1.

According to the painting tool, the porous body 2 comprises the buffer part 20, the incremental capillary part 21 and the liquid collecting part 22, and is integrated or split. The integrated structure is convenient to assemble and low in cost, and the split structure has more choices in material selection of each part.

When the buffer section 20 and the increasing capillary section 21 are integrated, the rising capillary pressure of the buffer section 20 is the same as the rising capillary pressure at the rearmost end of the increasing capillary section 21. When the liquid collecting part 22 and the increasing capillary part 21 are integrated, the rising capillary pressure of the liquid collecting part 22 is the same as the rising capillary pressure of the forefront end of the increasing capillary part 21. When the buffer part 20, the incremental capillary part 21 and the liquid collecting part 22 are separated, the rising capillary pressure of the buffer part 20 and the rising capillary pressure of the rearmost end of the incremental capillary part 21 may be the same or different, and the rising capillary pressure of the liquid collecting part 22 and the rising capillary pressure of the foremost end of the incremental capillary part 21 may be the same or different, according to the selection of materials.

The painting tool can adopt an integrated porous material to radially compress to form the liquid collecting part 22 and the incremental capillary part 21, so that the requirement on the rising capillary pressure is met, parts are reduced, and the painting tool is convenient to manufacture. The rising capillary pressure of the increasing capillary portion 21 increases from top to bottom, and in this case, the lower half portion of the increasing capillary portion 21 can approach the liquid collecting portion 22, and the upper half portion thereof can approach the buffer portion 20. In this structure, the upward disposition of the front end of the air guide passage 30 is advantageous for increasing the content of the coating liquid in the porous body 2 and increasing the liquid discharge amount of the coating tool; the downward arrangement of the front end of the air guide passage 30 is advantageous for reducing the content of the writing liquid in the porous body 2, and for improving the buffer capacity and the leakage prevention capability of the porous body 2 for the writing liquid.

According to the coating and writing tool, the radial center of the buffer part 20, the incremental capillary part 21 or the liquid collecting part 22 can be provided with a through hole, so that the coating and writing head 1 and the air-liquid exchanger 3 can be conveniently inserted into the porous body 2 during assembly. When the liquid trap part 22, the stepped-up capillary part 21 or the buffer part 20 has a through hole, the above cross-sectional area does not include the cross-sectional area of the hole.

In the writing instrument of the present invention, the buffer portion 20 has a void volume of 25 to 150% of the volume of the reservoir, preferably 50 to 77% of the volume of the reservoir. The design can reasonably utilize the space inside the penholder, and simultaneously ensure that the coating liquid does not leak from the coating head 1 when the temperature and the air pressure of the coating tool change in the transportation and use processes.

< gas-liquid exchanger >

In the writing tool of the present invention, the front end of the air guide passage 30 of the gas-liquid exchanger 3 is disposed at the front end of the buffer section 20 or below. When the front end of the air guide passage 30 is positioned at the front end of the buffer section 20, the liquid seal of the air guide passage 30 is most difficult to occur, and the content of the coating liquid in the porous body 2 is the largest, so that the air guide passage is suitable for a coating tool with a large liquid output amount. When the leading end of the air guide passage 30 is located closer to the leading end of the liquid collecting portion 22, the liquid seal of the air guide passage 30 occurs most easily, and the amount of the coating liquid in the porous body 2 is minimized, which is suitable for a coating tool having a small amount of liquid discharge. When the front end of the air guide channel 30 is set from the rearmost end to the foremost end of the incremental capillary portion, the amount of liquid required for the front end of the liquid seal air guide channel 30 is gradually reduced in the porous body 2, and the amount of liquid applied to the porous body 2 is reduced, so that the liquid applying device is suitable for application tools with different liquid amounts. As the cross-sectional area decreases toward the front end of the incremental capillary 21, this technique brings additional advantages: the further down the front end of the air guide passage 30 is, the more the amount of the coating liquid in the porous body 2 is significantly reduced at the time of the gas-liquid equilibrium, and in an abnormal situation, when the coating liquid in the liquid storage tube 4 is led out from the liquid guide passage 31 due to a temperature rise, the more the porous body 2 has a significantly increased capacity of absorbing the coating liquid, thereby significantly improving the capability of preventing the leakage of the coating liquid.

According to the scribbling tool, the front end of the liquid guide channel 31 is inserted into the incremental capillary part 21, the liquid collecting part 22 or the scribbling head 1, the lower the front end of the liquid guide channel 31 of the gas-liquid exchanger 3 is arranged, the shorter the distance of the scribbling liquid penetrating into the scribbling head 1 is, and the higher the liquid supply speed during scribbling is.

According to the scribbling tool, the liquid guide channel 31 is arranged in the air guide channel 30, the front end position of the liquid guide channel 31 can be flexibly arranged, and if the front end of the liquid guide channel 31 abuts against a pen point, the distance of scribbling liquid transmitted from the front end of the liquid guide channel 31 to the pen point is shortened; according to the scribbling tool, the air guide channel 30 is arranged in the liquid guide channel 31, the rear end position of the air guide channel 30 can be flexibly arranged, for example, the rear end of the air guide channel 30 extends into the liquid storage tube 4, and when the liquid level in the liquid storage tube 4 is lowered to expose the rear end of the air guide channel 30 under the condition of high external negative pressure, air in the liquid storage tube 4 can be led out through the air guide channel 30, so that the leading-out of scribbling liquid in the liquid storage tube 4 is further reduced, and the leakage risk is reduced.

The air guide channel 30 and the liquid guide channel 31 are arranged in parallel, and the front ends and the rear ends of the air guide channel 30 and the liquid guide channel 31 can be flexibly arranged respectively so as to meet the use requirements of different painting and writing tools.

In the painting tool of the present invention, the liquid guide channel 31 can be a hollow tube, which has a structure that can quickly discharge liquid, is beneficial to increasing the liquid discharge amount, and is suitable for painting tools with high liquid discharge amount, and also suitable for painting liquids containing particles or fragments, such as cosmetic liquids containing particles, liquid chalk painting liquids, correction liquids, etc.

According to the scribbling tool, the liquid guide channel 31 can be a water guide core, and the water guide core is reliable and stable in liquid guide performance and convenient to manufacture.

The painting tool of the invention has the advantages that the liquid guide channel can be a hollow water guide core, the hole in the liquid guide channel is the air guide channel, and the structure is simple.

Fig. 2 is a schematic cross-sectional view of a liquid-liquid exchanger in the writing instrument according to the embodiment of the present invention. As shown in fig. 2, the gas-liquid exchanger 3 may be structured as a double-tube coaxial passage 2a, and the liquid guide passage 31 is provided in the gas guide passage 30, i.e., the inner tube is formed as the liquid guide passage 31, the annular passage between the inner tube and the outer tube is formed as the gas guide passage 30, and the liquid guide passage 31 is a hollow tube.

The gas-liquid exchanger 3 may be configured as a single-tube double channel 2b, i.e., a single tube is divided into a gas guide channel 30 and a liquid guide channel 31 by a partition plate.

The gas-liquid exchanger 3 may be constructed as a single-tube water-introducing core 2c with the liquid-guiding passage 31 provided in the gas-guiding passage 30, i.e., the liquid-guiding passage 31 is a water-introducing core, and an annular passage between the water-introducing core and the outer tube is formed as the gas-guiding passage 30.

The gas-liquid exchanger 3 may be a single-tube grooved wick 2d, i.e., a wick in a single tube is formed as a liquid guide channel 31, and a channel formed by grooving the wall surface of the wick is formed as a gas guide channel 30.

The gas-liquid exchanger 3 may also be constructed as a double-tube coaxial channel 2e, which differs from the construction of 2a in that the gas-conducting channel 30 is arranged in a liquid-conducting channel 31, i.e. the inner tube is formed as a gas-conducting channel 30 and the annular channel between the inner and outer tubes is formed as a liquid-conducting channel 31, in which case the rear end of the gas-conducting channel 30 may extend into the reservoir 4 beyond the liquid level in the reservoir, the liquid-conducting channel 31 being a hollow annular tube.

The gas-liquid exchanger 3 may be structured as a hollow water guide core 2f, and the air guide passage 30 is provided in the liquid guide passage 31, i.e., the hole in the water guide core is formed as the air guide passage 30.

The gas-liquid exchanger 3 may have any of the above-described structures, or may have other structures having similar functions.

The liquid guide passage 31 is provided in the gas guide passage 30. This structure enhances the strength of the gas-liquid exchanger 3 while saving the volume of the gas-liquid exchanger 3, and the gas-liquid exchanger 3 occupies a small space proportion in the porous body 2, which is also advantageous for inserting the porous body 2 and reducing the damage to the porous body 2, and is very easy to assemble even in a pen barrel with a small inner diameter.

In the painting and writing tool of the present invention, one or more air guide channels 30 of the gas-liquid exchanger 3 are provided. The number and size of the air guide channels 30 and the relative positions of the air guide channels and the liquid guide channels can be flexibly set according to the requirement of the liquid outlet amount and the size of the internal space of the penholder, which is another advantage of the invention.

In the writing instrument of the present invention, the front end of the liquid guide passage 31 or the air guide passage 30 may be formed in a sharp shape to facilitate insertion of the porous body 2.

According to the coating and writing tool, the air guide channel 30 and the liquid guide channel 31 in the air-liquid exchanger 3 are combined together, the air-liquid exchanger 3 is positioned at the radial center of the porous body 2, or the liquid guide channel is positioned at the radial center of the porous body 2, so that the distance of the coating and writing liquid transmitted to the coating and writing head 1 is short, the coating and writing are smoother, and the manufacturing is easier. And is favorable to improving the intensity of the gas-liquid exchanger 3, is convenient for the assembly of the painting tool, and is very easy to manufacture the painting tool with small inner diameter of the pen holder.

< coating write head >

According to the coating and writing tool, the coating and writing head 1 is a part for writing or coating liquid, and the rear end of the coating and writing head 1 can be inserted into the incremental capillary part 21 and abutted against or inserted into the liquid collecting part 22. When the rear end of the coating and writing head 1 abuts against the liquid collecting part 22, the length of the coating and writing head 1 is shortest, and the coating and writing head cost is reduced. When the rear end of the painting and writing head 1 is inserted into the liquid collecting part 22, the painting and writing head 1 is in full contact with the liquid collecting part 22, and the liquid supply speed and reliability are improved. The amount of liquid supplied can be increased when the trailing end of the applicator head 1 is inserted into the gradually increasing capillary portion 21.

According to the coating tool, the front end of the liquid guide channel 31 is abutted against the rear end of the coating head 1. The proposal ensures that the distance from the front end of the liquid guide channel 31 to the scribbling head 1 is short and the liquid is discharged quickly, thereby being beneficial to guiding out the scribbling liquid containing large particles.

In the coating and writing tool, a porous material of a porous body 2 is arranged between the front end of a liquid guide channel 31 and the rear end of a coating and writing head 1. When some coating liquid is unstable and easy to precipitate, and the coating head is easy to be blocked by the precipitate, the porous material between the front end of the liquid guide channel 31 and the coating head 1 can filter the precipitate, and the precipitate is prevented from blocking the coating head 1.

< liquid storage pipe >

In the scribbling tool, the liquid storage pipe 4 is a component filled with scribbling liquid, and the replaceable liquid storage pipe 4 can be adopted, so that the repeated utilization of components such as a penholder 6 and the like is facilitated, and the resource waste is reduced. The replaced liquid storage tube 4 can be connected to the upper part of the penholder 6 of the painting and writing tool in various modes such as screwing, clamping and the like.

< Pen shaft >

the painting and writing tool in the embodiment further comprises a penholder 6, and the upper part of the penholder 6 can be integrally formed with the liquid storage pipe 4 and can also be detachably connected with the liquid storage pipe 4.

The lower portion of the barrel 6 may be integrally provided with a head holder 10 to which the head 1 is mounted, and the head holder 10 may be separately formed and then detachably mounted to the lower portion of the barrel 6.

The upper portion of the barrel 6 may be integrally provided with a partition 61, or a separately formed partition 61 may be detachably mounted. The gas-liquid exchanger may be integrally provided on the partition plate 61 or may be separately formed and then detachably mounted on the partition plate 61, preferably provided at the lower portion of the partition plate 61.

< porous body accommodating Chamber >

The painting tool in the present embodiment further includes a porous body accommodating chamber 5. The porous body accommodating chamber 5 may be integrally provided on the inner wall of the barrel 6, or may be detachably mounted on the inner wall of the barrel 6.

When the porous body accommodating chamber 5 is detachably mounted on the inner wall of the barrel 6, an accommodating chamber base may be provided on the inner wall of the barrel 6, and the porous body accommodating chamber 5 accommodating the porous body 2 may be mounted on the accommodating chamber base. When the porous body accommodating chamber 5 is detachably mounted on the inner wall of the barrel 6, the porous body accommodating chamber 5 and the porous body 2 can be preassembled, and the accommodating chamber base and the barrel 6 can be integrally formed, which can facilitate modular production and assembly.

In the writing instrument of the present invention, the entire porous body 2 or at least the liquid collecting section 22 is mounted in the porous body accommodating chamber 5. The shaped porous body accommodating chamber 5 allows the porous body 2 to be easily shaped to form the incremental capillary portion 21 and the liquid collecting portion 22 in appropriate shapes. That is, the liquid trap portion 22 and the stepped-up capillary portion 21 may be formed by radially pressing the porous body from the outside to the inside of the porous-body accommodating chamber.

When the buffer part 20 or the liquid collecting part 22 and the incremental capillary part 21 are of a split structure, the porous body accommodating chamber 5 facilitates close contact between the materials, so that liquid can smoothly circulate between the parts.

In the writing instrument of the present invention, the liquid trap 22 and the incremental capillary 21 are shaped into a desired shape when the porous body 2 is mounted in the porous body accommodating chamber 5. In this case, a porous material having a uniform density in the top and bottom before installation is selected, and the porous material is molded into the porous body 2 having a desired shape by using the shape of the porous-body accommodating chamber 5 during installation, so that the production and the manufacture are convenient and the cost is low.

Compared with the prior art, the direct liquid type painting and writing tool has the advantages of smooth painting and writing, difficult night leakage, less residual liquid amount, simple structure, easy manufacture, and convenience for a user to observe the painting and writing liquid amount in the liquid storage pipe, and can be widely applied to the requirements of different types of painting and writing tools on the liquid outlet amount and the kind of the painting and writing liquid.

Second embodiment

As shown in fig. 3, the structure of this embodiment is similar to that of the first embodiment, and the same parts as those of the first embodiment are not described again in the description of this embodiment. The difference is that the incremental capillary portion 21 and the liquid collecting portion 22 of the first embodiment can be formed by radially pressing the porous body accommodating chamber 5 from outside to inside, while the rear portion of the applicator head 1 similar to the trapezoid of the present embodiment radially presses the porous body from inside to outside to form the liquid collecting portion 22 and the incremental capillary portion 21, and makes the rising capillary pressure of the buffer portion 20 50-85% of the rising capillary pressure of the liquid collecting portion 22, the cross-sectional area of the incremental capillary portion 21 bordering the liquid collecting portion 22 25-75% of the cross-sectional area bordering the buffer portion 20, and the capacity of the liquid collecting portion 22 for the writing liquid is not more than 25% of the capacity of the liquid storage tube.

The embodiment is particularly suitable for painting and writing tools such as eyeliners and the like with small space inside the penholder but thick and large rear part of the painting and writing head. To better conduct away the coating fluid, the leading end of fluid conducting channel 31 may be positioned against the trailing end of head 1 or inserted into head 1.

Even in an abnormal condition, such as the liquid storage tube 4 is heated during transportation, the air in the liquid storage tube 4 expands and the negative pressure decreases, at this time, the coating liquid in the liquid storage tube 4 is led out to the porous body 2 through the liquid guide channel 31 or led out to the porous body 2 through the peripheral surface of the coating and writing head 1 until the coating liquid is rebalanced between the porous body 2 and the liquid storage tube 4, so that the leakage of the coating liquid from the coating and writing head 1 can be effectively prevented. When the above abnormal condition disappears, the negative pressure in the reservoir 4 increases, and the coating liquid in the porous body 2 returns to the reservoir 4 through the gas-liquid exchanger 3 until the balance between the porous body 2 and the reservoir 4 is restored.

Obviously, according to embodiments 1 and 2, the incremental capillary portion 21 and the liquid collecting portion 22 can also be formed by radially pressing the porous material from the outside and the inside with the porous-body accommodating chamber and the application head, respectively, at the same time.

Third embodiment

The present embodiment is a modification of the first embodiment. The same parts as those of the first embodiment will not be described again in the description of this embodiment.

As shown in fig. 4a and 4b, the air guide channel 30 of the gas-liquid exchanger 3 of the present embodiment is a plastic tube, the liquid guide channel 31 is a water guide core clamped in the air guide channel 30 by the reinforcing rib 32, and the liquid guide channel 31 and the air guide channel 30 abut against the liquid collecting part 22 with the same height of the front ends. The buffer part 20 and the incremental capillary part 21 are integrated and provided with through holes, are made of thicker fibers, and the incremental capillary part 21 is formed by radially compressing the porous body accommodating chamber 5; the porosity of the buffer part 20 and the liquid collecting part 22 is the same, the liquid collecting part 22 is made of thin fibers, the cross-sectional area of the progressive capillary part 21 and the liquid collecting part 22 is 50% of the cross-sectional area of the buffer part 20, the rising capillary pressure of the buffer part 20 is 65% of the rising capillary pressure of the liquid collecting part 22, the capacity of the liquid collecting part 22 is 10% of the capacity of the liquid storage tube, and the capillary void volume of the buffer part 20 is 65% of the capacity of the liquid storage tube.

The embodiment is suitable for painting and writing tools with medium ink output quantity, such as water color pens. After the writing tool is assembled, the writing liquid in the liquid storage tube 4 is guided into the liquid collecting part 22 through the liquid guide channel 31 and is collected therein, meanwhile, negative pressure is gradually formed in the liquid storage tube 4, and air enters the liquid storage tube 4 through the air guide channel 30. When the coating liquid in the liquid collecting section 22 increases and occupies a capillary space near the front end of the air guide channel 30, the air guide channel 30 is sealed with liquid, air no longer enters the liquid storage tube 4, and the coating liquid reaches equilibrium between the liquid storage tube 4 and the porous body 2. When the amount of the liquid in the liquid collecting part 22 is reduced, the writing liquid in the capillary gap near the front end of the air guide channel 30 is replaced by air, the outside air enters the air guide channel 30 through the air passage in the penholder 6 and the capillary gap without the writing liquid in the porous body 2 and finally enters the liquid storage tube 4, the negative pressure in the liquid storage tube 4 is reduced, and the writing liquid is guided out from the liquid guide channel 31 and is supplemented to the porous body 2 until the writing liquid in the porous body 2 is increased and the air guide channel 30 is sealed by the liquid again. This process is repeated until the marking fluid is written.

under abnormal conditions, such as the liquid storage tube 4 is heated during transportation, the air in the liquid storage tube 4 expands, the negative pressure decreases, and at this time, the coating liquid in the liquid storage tube 4 is led out to the liquid collecting part 22 and is transferred to the increment capillary part 21 and the buffer part 20, and under the action of the increment capillary pressure, the coating liquid is absorbed by the increment capillary part 21 and the buffer part 20 until the coating liquid is rebalanced between the porous body 2 and the liquid storage tube 4, so that the leakage of the coating liquid from the coating and writing head 1 of the coating and writing tool can be effectively prevented. When the abnormal condition disappears, the negative pressure in the reservoir 4 increases, and the coating liquid in the buffer section 20 and the increasing capillary section 21 is transferred back to the liquid collecting section 22 and returned to the reservoir 4 through the gas-liquid exchanger 3 until the equilibrium between the porous body 2 and the reservoir 4 is restored.

In this embodiment, setting the leading end position of the air guide passage upward increases the amount of the coating liquid in the porous body 2, that is, increases the amount of the liquid discharged from the coating head.

Fourth embodiment

As shown in FIG. 5, this embodiment is similar in structure to the third embodiment, except that the front end of the air guide channel 30 abuts against the liquid collecting part 21, and the front end of the acutely shaped liquid guide channel 31 is inserted into the liquid collecting part 22 to shorten the distance from the head. The capillary pressure of the buffer part 20 is 70% of the capillary pressure of the liquid collecting part 22, the writing liquid capacity of the liquid collecting part 22 is 15% of the liquid storage tube capacity, and the capillary void volume of the buffer part 20 is 50% of the liquid storage tube capacity.

Fifth embodiment

As shown in fig. 6a and 6b, this embodiment is similar to the fourth embodiment, but the liquid guiding channel 31 is a hollow tube, the liquid guiding channel 31 is inserted into the liquid collecting part 22 and abuts against the rear end of the painting head, the front end of the air guiding channel 30 is located in the middle of the incremental capillary part, the incremental capillary part 21 and the liquid collecting part 22 are formed by radially extruding a part of the integral porous body 2 from the porous body accommodating chamber 5, the ascending capillary pressure of the buffer part 20 is 85% of the ascending capillary pressure of the liquid collecting part 22, the cross-sectional area of the incremental capillary part 21 bordering the liquid collecting part 22 is 75% of the cross-sectional area bordering the buffer part 20, the painting liquid capacity of the liquid collecting part 22 is 25% of the liquid storage capacity, and the capillary void volume of the buffer part 20 is 150% of the liquid storage capacity. This embodiment adopts alternate form liquid storage tube, can reuse parts such as penholder, saves use cost.

Sixth embodiment

as shown in fig. 7a and 7b, the present embodiment is similar to the first embodiment, but the air guide channel 30 and the liquid guide channel 31 adopt a parallel structure, the ascending capillary pressure of the buffer part 20 is 60% of the ascending capillary pressure of the liquid collecting part 22, the writing liquid capacity of the liquid collecting part 22 is 20% of the capacity of the liquid storage tube, and the capillary void volume of the buffer part 20 is 77% of the capacity of the liquid storage tube, the working principle of the present embodiment is similar to that of embodiment 1, and the parallel arrangement of the liquid guide channel 31 and the air guide channel 30 is suitable for the pen barrel with an oval shape.

As shown in fig. 7a, the rear end of the air guide channel 30 may also extend into the liquid storage tube 4, and in the case of a high external negative pressure, when the liquid level in the liquid storage tube 4 drops to expose the rear end of the air guide channel 30, air in the liquid storage tube 4 may be led out through the air guide channel 30, so as to reduce the lead-out of the painting liquid in the liquid storage tube 4, and further reduce the risk of leakage. The gas guide channel 30 and the liquid guide channel 31 in the gas-liquid exchanger 3 are arranged in parallel, and the gas-liquid exchanger 3 can be positioned at the radial center of the porous body 2, or the liquid guide channel 31 of the gas-liquid exchanger 3 is positioned at the radial center of the porous body 2, so that the distance of the coating liquid transferred to the coating head 1 is short, the coating is smoother, and the manufacture is easier. And is favorable to improving the intensity of the gas-liquid exchanger 3, is convenient for the assembly of the painting tool, and is very easy to manufacture the painting tool with small inner diameter of the pen holder.

Seventh embodiment

As shown in fig. 8, this embodiment is similar to the fifth embodiment, but the front end of the liquid guiding channel 31 abuts against the liquid collecting part 22, the front end of the air guiding channel 30 is located in the increasing capillary part 21 one third from the front end, the cross-sectional area of the increasing capillary part 21 bordering on the liquid collecting part 22 is 25% of the cross-sectional area bordering on the buffer part 20, the ascending capillary pressure of the buffer part 20 is 50% of the ascending capillary pressure of the liquid collecting part 22, the capacity of the liquid collecting part 22 for the writing liquid is 5% of the capacity of the liquid storage tube, the capillary void volume of the buffer part 20 is 50% of the capacity of the liquid storage tube, and the writing head 1 abuts against the front end of the liquid collecting part 22.

Eighth embodiment

As shown in fig. 9, this embodiment is similar in structure to the fourth embodiment, except that the leading end of the liquid guide passage communicates with the head through the porous body. In this embodiment, the front end of the liquid guiding channel 31 formed by the water guiding core passes through the liquid collecting part 22 to be communicated with the coating core 11 or the coating ball of the coating and writing head 1, and the coating and writing head 1 is indirectly communicated with the porous body 2 through the liquid guiding channel 31; the capacity of the liquid collecting section 22 for the coating liquid is 2% of the capacity of the liquid storage tube. The embodiment is suitable for small painting tools such as sign pens and the like. The liquid guide channel 31 can directly supply ink to the coating head, and coating fluency is improved. And because the ink demand of the tiny scribbling tool is very small, even under abnormal conditions, such as the liquid storage tube 4 is heated in the transportation process, the air in the liquid storage tube 4 expands and the negative pressure decreases, at this moment, the scribbling liquid in the liquid storage tube 4 is led out to the liquid collecting part 22 through the peripheral surface of the liquid guide channel 31 and is transferred to the incremental capillary part 21 and the buffer part 20 until the scribbling liquid is rebalanced between the porous body 2 and the liquid storage tube 4, so that the scribbling liquid can be effectively prevented from leaking from the scribbling head 1. When the abnormal condition disappears, the negative pressure in the reservoir 4 increases, and the coating liquid in the buffer section 20 and the increasing capillary section 21 is transferred back to the liquid collecting section 22 and returned to the reservoir 4 through the gas-liquid exchanger 3 until the equilibrium between the porous body 2 and the reservoir 4 is restored.

Ninth embodiment

As shown in fig. 10, the present embodiment is a modification of the first embodiment. The same parts as those of the first embodiment will not be described again in the description of this embodiment. The gas-liquid exchanger 3 comprises an outer tube 32 and an inner tube 33, the front ends of the outer tube 32 and the inner tube 33 are abutted against the liquid collecting part 22, the rear end of the pen point is close to the front end of the liquid guide channel, the rear end of the outer tube 32 is integrally arranged with a partition plate 61 or detachably arranged on the partition plate 61, and the partition plate can be a part of the detachable liquid storage tube 4.

The liquid guide passage 31 is formed between the outer tube 32 and the inner tube 33 by providing a hollow water guide core, the passage in the inner tube 32 forms the air guide passage 30, and the rear ends of the hollow water guide core and the inner tube 33 extend into the ink tubes 4, preferably to the middle upper portions of the ink tubes 4, i.e., the rear ends of the liquid guide passage 31 and the air guide passage 30 are located at the middle upper portions of the ink tubes 4.

The cross-sectional area of the capillary part 21 bordering on the liquid collecting part 22 is 42% of the cross-sectional area bordering on the buffer part 20, the rising capillary pressure of the buffer part 20 is 65% of the rising capillary pressure of the liquid collecting part 22, the capacity of the liquid collecting part 22 for the writing liquid is 10% of the capacity of the liquid storage tube, and the capillary void volume of the buffer part 20 is 75% of the capacity of the liquid storage tube. The air in the liquid storage pipe can be discharged through the air guide channel when the air is arranged at high negative pressure outside, so that the leakage prevention capability can be further improved.

Tenth embodiment

As shown in fig. 11, the present embodiment is a modification of the first embodiment. The same parts as those of the first embodiment will not be described again in the description of this embodiment.

The writing instrument of this embodiment may further include an absorbent part 7, the absorbent part 7 being disposed below the liquid collecting part 22, and the rising capillary pressure of the absorbent part 7 being smaller than that of the liquid collecting part, preferably smaller than that of the buffer part. When the scribbling tool falls, the liquid leaked from the liquid collecting part when the external environment is changed violently can be effectively absorbed, and the leakage prevention capability is further improved.

The writing instrument of the present embodiment may further include a leakage preventing baffle 8 provided at the bottom of the porous body accommodating chamber 5, the leakage preventing baffle 8 being centrally provided with an insertion hole into which the writing tip 1 is inserted, and the leakage preventing baffle 8 may further improve leakage preventing ability.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention. The painting tool of the present invention generally refers to tools for writing and painting in office supplies, and various liquid painting tools used in the fields of cosmetics, correction fluids, liquid glues, and the like.

Claims

1. A kind of scribble write tool, including scribbling the write head; a porous body in communication with the write head, the porous body being in communication with the outside atmosphere; a gas-liquid exchanger; and a liquid storage pipe communicating with the porous body through the gas-liquid exchanger,

The porous body is provided with a buffer part close to the liquid storage pipe, an increasing capillary part arranged below the buffer part and a liquid collecting part arranged below the increasing capillary part; the rising capillary pressure of the gradually-increased capillary part is gradually increased from the buffer part to the liquid collecting part; the gas-liquid exchanger is provided with a liquid guide channel and a gas guide channel, and the front end of the gas guide channel is positioned at or below the front end of the buffer part; the rising capillary pressure of the buffer part is 50 to 85 percent of the rising capillary pressure of the liquid collecting part, and the coating liquid capacity of the liquid collecting part is 2 to 25 percent of the capacity of the liquid storage pipe.

2. The applicator tool according to claim 1, wherein the front end of the air guide channel is disposed in the incremental capillary at a position one-third from the front end of the incremental capillary portion and at a position between the front ends of the liquid guide channels.

3. The applicator of claim 1, wherein the porous body is a porous material made of fibers.

4. The applicator of claim 1, wherein the cross-sectional area of the progressive wick bordering the liquid trap is between 25% and 75% of the cross-sectional area of the progressive wick bordering the buffer.

5. The writing instrument of claim 1, wherein the fluid conducting channel is disposed within the gas conducting channel, the fluid conducting channel being a hollow tube or a water conducting core.

6. The writing instrument of claim 1, wherein the air guide channel is disposed within the liquid guide channel, the liquid guide channel being a hollow annular tube or a hollow water guide core.

7. The applicator of claim 1, wherein the fluid-conducting channel is juxtaposed to the air-conducting channel.

8. The writing instrument of claim 7, wherein a rear end of the air guide channel extends into the reservoir.

9. The writing instrument of claim 1, wherein the gas-liquid exchanger is located at a radial center of the porous body.

10. The applicator of claim 1, wherein the fluid conducting channel is located at a radial center of the porous body.

11. The applicator of claim 1, further comprising a porous body receiving chamber, wherein the liquid collection portion and the incremental fuzz portions are formed by radially pressing a porous material from the outside to the inside from the porous body receiving chamber.

12. The applicator tool according to claim 1, wherein the liquid-collecting portion and the incremental capillary portions are formed by radially extruding the porous material from the inside to the outside of the rear portion of the applicator head.

13. The applicator of claim 1, wherein the leading end of the fluid conducting channel communicates with the head through the porous body.

14. The writing instrument of claim 1, wherein the air guide channel is disposed in the liquid guide channel, the liquid guide channel is a hollow water guide core, and rear ends of the liquid guide channel and the air guide channel are located at a middle upper portion of the ink tube.

15. The writing instrument of claim 1, wherein the porous body further has an absorbent portion disposed below the liquid collecting portion.