CN115302971A

CN115302971A - Scribble instrument of writing

Info

Publication number: CN115302971A
Application number: CN202110491850.6A
Authority: CN
Inventors: 不公告发明人
Original assignee: Microporous Technology (ningbo) Ltd
Current assignee: Microporous Technology (ningbo) Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-11-08

Abstract

The invention relates to a coating and writing tool, which comprises a coating and writing head, a buffer body communicated with the outside atmosphere, a gas-liquid exchanger and a liquid storage pipe for supplying liquid to the gas-liquid exchanger, wherein the gas-liquid exchanger is provided with a water diversion core, a liquid seal pipe coated on the peripheral wall of the water diversion core and a gas-liquid channel arranged between the water diversion core and the liquid seal pipe; the buffer body is coated on the peripheral wall of the liquid seal pipe, and the capillary pressure of the liquid seal pipe is more than 30% greater than that of the buffer body; the end part of the liquid seal pipe close to the coating and writing head is positioned between the two end parts of the buffer body, and the distance between the end part of the liquid seal pipe close to the coating and writing head and the end part of the buffer body close to the coating and writing head is greater than or equal to 15% of the height of the buffer body and less than or equal to 75% of the height of the buffer body. The painting tool of the invention can effectively control the liquid release and prevent the liquid leakage; simple structure, smooth release and convenient manufacture.

Description

Scribble instrument of writing

Technical Field

The invention relates to a painting tool, in particular to the technical field of controlling the release of various liquids in writing tools and cosmetics.

Background

Porous materials have found widespread use in the art of controlled liquid release, such as in markers, as a material for absorbing and containing liquids. In the prior art, the most common porous material is a coiled core formed by wrapping a fiber bundle with a film, the coiled core is inserted into a shell and a coating head when in use, and two ends of the coiled core are communicated with the atmosphere, so that air is discharged to two ends and liquid is diffused to two ends when liquid is injected, and the liquid is also convenient to release. However, the liquid output of the coiled core is gradually reduced along with the increase of the service time, and the coiled core has the defect of large residual liquid amount.

In the technical field of controlling liquid release, another common technology is to adopt a water-guiding core to conduct liquid and use a fin group to control liquid release, so that the ink-guiding core is suitable for application with small ink output, such as a water-based ball-point pen. Patent document 201510018984.0 discloses a direct liquid type writing device, which is provided with an adjusting part between an ink tube and a pen point, and controls ink release by utilizing very precise intermittence in the adjusting part, and the liquid release technology well solves the problem of a coiled core type coating and writing tool and is beneficial to application of large liquid output, but the design of the adjusting part is more complicated, the requirement on intermittent size control in the adjusting part is very precise, and the manufacturing cost is higher. The two techniques have the common defects that the pen point is far away from the ink tube and only the water guide core is used for conducting liquid between the pen point and the ink tube: if the pen point is placed for a period of time or used with the pen point upwards, the function is easily affected because the pen point is partially lack of ink.

Meanwhile, in the prior art, under abnormal conditions, such as the writing device is rapidly heated in the transportation or use process, the air in the liquid storage tube rapidly expands, the negative pressure rapidly decreases, and the ink leakage can be caused.

Disclosure of Invention

In order to solve the problems of the traditional coating and writing tools of the roll-up core type and some existing direct liquid type coating and writing tools, the invention provides a coating and writing tool, which comprises a coating and writing head, a buffer body communicated with the outside atmosphere, a gas-liquid exchanger and a liquid storage pipe for supplying liquid to the gas-liquid exchanger, wherein the gas-liquid exchanger is provided with a water diversion core, a liquid seal pipe coated on the peripheral wall of the water diversion core and a gas-liquid channel arranged between the water diversion core and the liquid seal pipe; the buffer wraps on the periphery wall of the liquid seal pipe, the capillary pressure of the liquid seal pipe is more than 30% greater than that of the buffer, the end part of the liquid seal pipe close to the coating and writing head is located between the two end parts of the buffer, and the distance between the end part of the liquid seal pipe close to the coating and writing head and the end part of the buffer close to the coating and writing head is larger than or equal to 15% of the height of the buffer and smaller than or equal to 75% of the height of the buffer.

Furthermore, a groove is arranged on the peripheral wall of the water diversion core, and a gas-liquid channel is formed between the groove and the inner peripheral wall of the liquid seal pipe.

Further, the liquid seal pipe is made of a porous material.

Further, when the gas-liquid channel is used as a gas guide channel, the maximum inscribed circle diameter of the cross section of the gas guide channel is 0.1-0.8mm.

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

Furthermore, the water diversion core penetrates through the lower end of the liquid seal pipe to be connected with the painting head.

Further, the bottom of the liquid storage pipe is provided with a sleeve.

Further, a protective body is arranged below the gas-liquid exchanger, and the capillary pressure of the protective body is not greater than that of the buffer body.

Further, the coating head is inserted into the gas-liquid exchanger and connected with a part of the inner wall of the liquid seal pipe.

Further, the distance between the end of the liquid seal tube near the applicator tip and the end of the buffer body near the applicator tip is 30%, 40%, 50%, or 60% of the height of the buffer body.

According to the technical scheme of the invention, the liquid release can be effectively controlled, the liquid outlet is smooth and stable, and the liquid leakage under abnormal conditions can be effectively prevented; simple structure and convenient manufacture.

Drawings

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

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

FIG. 1b isbase:Sub>A schematic cross-sectional view taken along section A-A of FIG. 1base:Sub>A;

FIG. 2a is a schematic diagram of a second embodiment of a writing instrument according to the present invention;

FIG. 2B is a schematic cross-sectional view taken along section B-B of FIG. 2 a;

FIG. 3a is a schematic diagram of a writing instrument according to a third embodiment of the present invention;

FIG. 3b is a schematic cross-sectional view taken along section C-C of FIG. 3 a;

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

FIG. 4b is a schematic cross-sectional view taken along section D-D of FIG. 4 a;

FIG. 5a is a schematic diagram of a writing instrument according to a fifth embodiment of the present invention;

FIG. 5b is a schematic cross-sectional view taken along section E-E in FIG. 5 a;

FIG. 6a is a schematic diagram of a writing instrument according to a sixth embodiment of the present invention;

fig. 6b is a schematic cross-sectional view taken along section G-G in fig. 6 a.

Detailed Description

The following description is given by way of example of the present invention and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description. While the invention will be described in conjunction with the preferred embodiments, it is not intended that the features of the invention be limited to that embodiment. 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 present invention, "lower" and "front" refer to one end of the writing head 1, 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 refers to a condition of room temperature and one standard atmospheric pressure, and the abnormal condition refers to a condition of outside temperature or pressure deviating from the normal condition. The capillary pressure P in the invention is defined as the pressure generated by the rising height h of liquid after one end of a porous liquid-sealed tube or a buffer body with enough length generally requiring 2-15cm is just contacted with the horizontal liquid level and is vertically placed for 30 minutes under the normal condition,

P＝ρgh,

where ρ is the density of the liquid, g is the acceleration of gravity, and h is the liquid rise

The test method for the liquid rise h is defined in the present invention as follows:

1) Placing a porous body with the length H into a liquid to absorb the liquid until the porous body is saturated, and testing the saturated absorption weight W of the porous body ₀ ，

2) With the same porous body and the same liquid, one end of the porous body was just contacted with the liquid surface and left upright for 30 minutes, and the liquid absorption weight was measured as W,

3) The h value is calculated as: h = (W/W) ₀ )x H

As shown in fig. 1 to 6, the coating and writing tool according to the present invention includes a coating and writing head 1, a buffer body 2 communicating with the outside atmosphere, a gas-liquid exchanger 3, and a liquid storage pipe 4 supplying liquid to the gas-liquid exchanger 3, the gas-liquid exchanger 3 having a water diversion core 31, a liquid seal pipe 32 covering the outer peripheral wall of the water diversion core 31, and a gas-liquid channel 30 provided between the water diversion core 31 and the liquid seal pipe 32; the buffer body 2 is coated on the outer peripheral wall of the liquid seal tube 32, the capillary pressure of the liquid seal tube 32 is more than 30% larger than that of the buffer body 2, the end part of the liquid seal tube 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid seal tube 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is more than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2.

< gas-liquid exchanger >

According to the writing instrument of the present invention, the gas-liquid exchanger 3 has a water-attracting core 31, a liquid-tight tube 32 covering the outer peripheral wall of the water-attracting core 31, and a gas-liquid passage 30 provided between the water-attracting core 31 and the liquid-tight tube 32.

< Water diversion core >

The water diversion core 31 of the present invention can be made of fiber bonding, such as polyester fiber, acrylic fiber, etc. Besides, the outer peripheral wall of the water diversion core 31 is provided with a groove, and the groove and the inner peripheral wall of the liquid seal pipe 32 form a gas-liquid channel 30. That is, one or more grooves are formed on the outer peripheral wall of the wick 31 to extend from one end to the other end as gas-liquid passages 30. When only one groove is arranged, the groove is used as an air guide channel for conducting an air path to the liquid storage pipe 4, and the water guide core 31 is used as a liquid guide channel for transmitting liquid from the liquid storage pipe 4 to the painting head 1. When a plurality of grooves are provided, a part of the grooves may also serve as a liquid guide passage for transferring liquid from the liquid storage tube 4 to the coating head 1. When a plurality of grooves are provided, it is preferable that the number of grooves is 2 to 30, for example, 3, 5, 6, 9, 12, 15, 18, 21, 24, 27.

The water-guiding core 31 of the present invention can also be made of plastic whose surface can be soaked by liquid, such as polyoxymethylene, nylon, etc., the plastic water-guiding core 31 needs to be provided with two or more grooves on its surface as the gas-liquid channel 30, wherein at least one groove is used as a gas-guiding channel for conducting the gas path to the liquid storage tube 4, and the other grooves are used as liquid-guiding channels for transferring liquid from the liquid storage tube 4 to the writing head 1.

< liquid seal pipe >

The liquid seal tube 32 of the present invention is made of a porous material. The porous material of which the liquid-tight tube 32 is made may be a filter membrane or a fiber. The liquid seal pipe 32 has a wall thickness of 0.1-5mm, such as 0.1mm, 0.5mm, 1mm, 2mm, 5mm. The liquid seal tube 32 with the thinner wall thickness can be made of a filter membrane, and the liquid seal tube 32 with the thicker wall thickness can be made of single-component fiber or double-component fiber in a bonding mode. The thinner-wall liquid seal pipe 32 has small capacity for liquid, which is beneficial to more fully utilizing and releasing the liquid and reducing the residual quantity; the liquid seal pipe 32 having a relatively thick wall has a large capacity for liquid, and is advantageous for retaining a large amount of liquid in the gas-liquid exchanger 3, and has a good liquid releasing performance even when the application head 1 is used in an upward direction.

The liquid seal pipe 32 prevents the gas from passing through the liquid seal pipe 32 in the radial direction after absorbing a certain amount of liquid, so that the water guide core 31 and the gas-liquid channel 30 are isolated from the buffer body 2, in this case, the liquid storage pipe 4 and the outside can only exchange gas through the gas-liquid channel 30, but cannot exchange gas from the buffer body 2 through the liquid seal pipe 32. The gas-liquid channel 30 is formed between the inner wall of the liquid seal pipe 32 after absorbing liquid and the water wick 31 and the groove on the surface of the water wick, and most of the space of the gas-liquid channel 30 is filled with liquid, so that the gas guide channel 30 is sealed into a plurality of sections of small bubbles by the liquid. When liquid is led out from the liquid storage pipe 4 through the gas-liquid exchanger 3, the pressure difference between the inside of the liquid storage pipe 4 and the outside is increased, bubbles in the gas-liquid channel 30 are pushed to move towards the liquid storage pipe 4 and enter the liquid storage pipe 4, the pressure difference between the liquid storage pipe 4 and the outside is reduced until balance is achieved, and meanwhile, a new liquid seal section and small bubbles are formed in the gas-liquid channel 30. The capillary pressure of the liquid seal tube 32 is more than 30% greater than the capillary pressure of the buffer body 2, so that it is difficult for the buffer body 2 to absorb liquid from the liquid seal tube 32 under normal conditions.

< gas-liquid exchanger >

The gas-liquid exchanger 3 of the present invention includes a water guide core 31 and a liquid seal pipe 32, and a part of the outer peripheral wall of the water guide core 31 is covered with the liquid seal pipe 32.

The groove on the outer peripheral wall of the water wick 31 of the gas-liquid exchanger 3 and the inner peripheral wall of the liquid seal pipe 32 form a gas-liquid channel 30 and are communicated with the ambient atmosphere. When the gas-liquid passage 30 is used as the gas guide passage, the maximum inscribed circle diameter of the gas guide passage cross section is 0.1 to 0.8mm, depending on the use requirements of the writing instrument and the properties of the liquid therein. The air guide channels with different maximum inscribed circle diameters have different capillary forces so as to control the liquid seal strength during air guide. The air guide amount is small when the diameter of the maximum inscribed circle is small, and the writing tool is suitable for a writing tool with small liquid output amount; the larger diameter of the maximum inscribed circle has large air guide amount and is suitable for a painting and writing tool with large liquid output amount.

A liquid guide channel is also arranged in the gas-liquid exchanger 3. The water-guiding core 31 made of fiber can be used as a liquid-guiding channel; the groove or grooves on the surface of the water guiding core 31 and the inner wall of the liquid seal pipe 32 can also form a liquid guiding channel. The grooved fluid conducting channel is particularly important when the fluid used in the writing instrument contains relatively large particles, such as pearlescent ink or metallic ink, because a conventional water wicking core 31 without grooves can filter all or part of the particles in the fluid.

< buffer >

The buffer body 2 is coated on the outer peripheral wall of the liquid seal tube 32, and the capillary pressure of the liquid seal tube 32 is more than 30% greater than that of the buffer body 2.

The buffer body 2 of the present invention is made of a porous material and is in communication with the ambient atmosphere. The porous material of the buffer body 2 can be sponge or fiber, and the length and the wall thickness of the buffer body 2 can be set according to the inner space of the painting and writing tool. The buffer body 2 is made with a suitable capillary pressure according to the liquid used in the applicator and the requirements of use.

The capillary pressure of the liquid seal tube 32 is 30% or more greater than the capillary pressure of the buffer body 2, and the buffer body 2 hardly absorbs liquid from the liquid seal tube 32 under normal conditions. The inner wall of the buffer body 2 is connected to the outer wall of the liquid seal tube 32, and if an abnormal condition occurs and the liquid content in the liquid seal tube 32 is too high, the buffer body 2 absorbs the excessive liquid in the liquid seal tube 32, so that the liquid can be prevented from leaking from the application head 1. When the abnormal condition disappears, the liquid in the buffer body 2 is transmitted back to the liquid seal pipe 32 and returns to the liquid storage pipe 4 through the liquid guide channel. In order to provide the cushion body 2 with the above-described properties, the density of the cushion body 2 is 0.03 to 0.20 g/cm ³ When the cushion body 2 is made of a fiber, the fineness of the fiber is preferably 0.5 to 30 denier.

The end part of the liquid sealing pipe 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid sealing pipe 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is larger than or equal to 15% of the height of the buffer body 2 and smaller than or equal to 75% of the height of the buffer body 2.

When the distance between the end of the liquid seal pipe 32 close to the painting and writing head 1 and the end of the buffer body 2 close to the painting and writing head 1 is less than 15% of the height of the buffer body 2, under abnormal conditions, if the liquid storage pipe 4 is rapidly heated in the transportation or use process, the air in the liquid storage pipe 4 rapidly expands and the negative pressure decreases, at the moment, the painting and writing liquid in the liquid storage pipe 4 easily leaks from the end of the liquid seal pipe 32 close to the painting and writing head 1, and the buffer body 2 does not have time to absorb the painting and writing liquid of the leakage, thereby causing the leakage of the painting and writing liquid.

When the distance between the end of the liquid seal tube 32 close to the application head 1 and the end of the buffer body 2 close to the application head 1 is greater than 75% of the height of the buffer body 2, the liquid seal tube 32 is far from the application head 1, which easily results in insufficient supply of the application liquid.

When the distance between the end of the liquid seal tube 32 close to the applying and writing head 1 and the end of the buffer body 2 close to the applying and writing head 1 is greater than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2, under abnormal conditions, for example, the liquid storage tube 4 is rapidly heated in the transportation or use process, the air in the liquid storage tube 4 expands and the negative pressure decreases, and the applying and writing liquid leaking from the end of the buffer body 2 close to the applying and writing head 1 can be effectively absorbed by the buffer body, so that the leakage of the applying and writing liquid can be effectively avoided.

< coating write head >

The coating and writing head 1 of the present invention may be connected to the wick 31 passing through the liquid seal pipe 32, or may be inserted into the gas-liquid exchanger 3 and connected to a part of the inner wall of the liquid seal pipe 32. The wick 31 may also be extended as the applicator head 1.

< liquid storage tube >

In the writing instrument of the present invention, the reservoir tube 4 is a member for storing liquid. The bottom of the liquid storage tube 4 may be provided with an upward or downward sleeve 62, and the sleeve 62 is inserted into the gas-liquid exchanger 3 and is in close contact with the inner wall of the liquid seal tube 32, or the liquid seal tube 32 and the water guide core 31 are inserted into the sleeve 62, which is advantageous for fixing the gas-liquid exchanger 3 and preventing liquid leakage. The replaceable liquid storage pipe 4 can be adopted, so that the components such as the shell 6 and the like can be recycled, and the resource waste is reduced. The replacement type liquid storage tube 4 can be connected to the painting and writing tool in various manners such as screwing, clamping and the like.

First embodiment

FIG. 1a is a schematic diagram of a first embodiment of a writing instrument according to the present invention; FIG. 1b isbase:Sub>A schematic cross-sectional view taken along section A-A in FIG. 1base:Sub>A. As shown in fig. 1a and 1b, the coating and writing tool according to the first embodiment includes a coating and writing head 1, a buffer body 2 communicating with the outside atmosphere, an air-liquid exchanger 3, and a reservoir pipe 4 supplying liquid to the air-liquid exchanger 3,

the gas-liquid exchanger 3 is provided with a water diversion core 31, a liquid seal pipe 32 coated on the outer peripheral wall of the water diversion core 31 and a gas-liquid channel 30 arranged between the water diversion core 31 and the liquid seal pipe 32; the buffer body 2 is coated on the peripheral wall of the liquid seal tube 32, the capillary pressure of the liquid seal tube 32 is more than 30% greater than that of the buffer body 2, the end part of the liquid seal tube 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid seal tube 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is more than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2.

According to the writing tool of this embodiment, one end of the wick 31 is inserted into the liquid storage tube 4 through the upper end of the liquid seal tube 32, and the other end is connected to the writing head 1 through the lower end of the liquid seal tube 32. In this embodiment, the wick 31 is in abutting connection with the writing head 1.

The liquid seal pipe 32 is a filter membrane or adhesive fiber, and the buffer body 2 is sponge or adhesive fiber.

According to the writing tool of the present embodiment, further comprising a housing 6 and a partition plate 61, the reservoir tube 4 is integrally provided in the housing 6, and the partition plate 61 serves as a bottom of the reservoir tube 4 at the same time. The partition 61 is provided with a through hole into which the water guide core 31 is inserted.

According to the writing instrument of this embodiment, the bottom of the reservoir tube 4 is provided with a downwardly extending sleeve 62, and the sleeve 62 is coaxially disposed with the through hole of the partition plate 61 into which the water guide core 31 is inserted and has the same inner diameter. During assembly, the sleeve 62 can be inserted between the liquid seal pipe 32 and the water diversion core 31, and the outer peripheral wall of the sleeve 62 is tightly matched with the inner peripheral wall of the liquid seal pipe 32, so that reliable assembly between the liquid storage pipe 4 and the gas-liquid exchanger 3 is facilitated.

The lower portion of housing 6 may be integrally provided with an applicator head mount 10 to which the applicator head 1 is mounted. The pad mount 10 may also be formed separately and then removably mounted to the lower portion of the housing 6.

In the present embodiment, the distance between the end of the liquid seal tube 32 near the coating head 1 and the end of the buffer body 2 near the coating head 1 is set to 45% of the height of the buffer body 2.

Second embodiment

FIG. 2a is a schematic diagram of a second embodiment of a writing instrument according to the present invention; fig. 2B is a schematic cross-sectional view taken along section B-B in fig. 2 a. 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.

As shown in fig. 2a and 2b, the coating and writing tool according to the second embodiment includes a coating and writing head 1, a buffer 2 communicating with the outside atmosphere, a gas-liquid exchanger 3, and a liquid storage pipe 4 supplying liquid to the gas-liquid exchanger 3, the gas-liquid exchanger 3 having a water diversion core 31, a liquid seal pipe 32 covering the outer peripheral wall of the water diversion core 31, and a gas-liquid channel 30 provided between the water diversion core 31 and the liquid seal pipe 32; the buffer body 2 is coated on the peripheral wall of the liquid seal tube 32, the capillary pressure of the liquid seal tube 32 is more than 30% greater than that of the buffer body 2, the end part of the liquid seal tube 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid seal tube 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is more than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2.

According to the writing tool of the present embodiment, one end of the wick 31 is inserted into the liquid storage tube 4 through the liquid seal tube 32, and the other end is inserted into the writing head 1 through the liquid seal tube 32.

The outer peripheral wall of the water guiding core 31 is provided with a groove, and the groove and the inner peripheral wall of the liquid seal pipe 32 form a gas-liquid channel 30. That is, one or more grooves are formed on the outer peripheral wall of the wick 31 to extend from one end to the other end as the gas-liquid passages 30. In the present embodiment, the number of grooves is set to 3. The maximum inscribed circle diameter of the groove is preferably 0.5 mm. In this embodiment, the wick 31 is preferably a bonded fiber or plastic.

The liquid seal tube 32 is preferably bonded fiber, and the wall thickness of the liquid seal tube 32 is preferably 0.5 mm. The cushion body 2 is preferably a sponge or a bonded fiber.

According to the writing instrument of this embodiment, the bottom of the reservoir tube 4 is provided with a downwardly extending sleeve 62, and the sleeve 62 is coaxially disposed with the through hole of the partition plate 61 into which the water guide core 31 is inserted and has the same inner diameter. During assembly, the sleeve 62 can be inserted between the liquid seal tube 32 and the water diversion core 31, and the outer peripheral wall of the sleeve 62 is tightly matched with the inner peripheral wall of the liquid seal tube 32, so that the liquid storage tube 4 and the gas-liquid exchanger 3 can be reliably assembled.

According to the writing instrument of this embodiment, the protective member 5 is provided below the gas-liquid exchanger 3, and the capillary pressure of the protective member 5 is not greater than that of the buffer member 2.

In this embodiment, the other end of the wick 31 passes through the liquid seal pipe 32, then passes through the protective body 5, and then is inserted into the applicator head 1.

In an extreme abnormal situation, for example, when the scribbling tool is carried from a low-altitude area to a high-altitude area or opened on an airplane flying at high altitude, the liquid rapidly guided out from the liquid storage tube 4 cannot be absorbed by the buffer body 2 in time and leaks due to the extreme air pressure difference between the inside and the outside of the liquid storage tube 4. In this case, the protective body 5 can absorb the liquid that rapidly escapes from the gas-liquid exchanger 3. After the abnormal situation is eliminated, the liquid temporarily stored in the protective body 5 is transferred to the application head 1 via the water-conducting core 31 or absorbed by the liquid-tight tube 32.

In this embodiment, the distance between the end of the liquid seal tube 32 near the head 1 and the end of the buffer 2 near the head 1 is preferably 25% to 45% of the height of the buffer 2, and most preferably 40% of the height of the buffer 2.

The writing instrument according to the present embodiment can be applied to an eyeliner. According to the writing instrument of the present embodiment, since the number of the grooves serving as the gas-liquid passages 30 is 3, and at least one of the grooves serves as a liquid guide passage, particles in the eyeliner liquid can be transported to the writing head 1 through the grooves without being filtered by the wick 31.

Third embodiment

FIG. 3a is a schematic diagram of a writing instrument according to a third embodiment of the present invention; fig. 3b is a schematic cross-sectional view taken along section C-C in fig. 3 a. 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.

As shown in fig. 3a and 3b, the coating and writing tool according to the third embodiment includes a coating and writing head 1, a buffer 2 communicating with the outside atmosphere, a gas-liquid exchanger 3, and a liquid storage pipe 4 supplying liquid to the gas-liquid exchanger 3, the gas-liquid exchanger 3 having a water diversion core 31, a liquid seal pipe 32 covering the outer peripheral wall of the water diversion core 31, and a gas-liquid channel 30 provided between the water diversion core 31 and the liquid seal pipe 32; the buffer body 2 is coated on the peripheral wall of the liquid seal tube 32, the capillary pressure of the liquid seal tube 32 is more than 30% greater than that of the buffer body 2, the end part of the liquid seal tube 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid seal tube 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is more than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2.

According to the painting and writing tool of the present embodiment, one end of the water-guiding core 31 extends out of the liquid-sealing pipe 32 and is inserted into the liquid-storing pipe 4, and the other end passes through the liquid-sealing pipe 32 and extends out of the housing 6.

The outer peripheral wall of the water guiding core 31 is provided with a groove, and the groove and the inner peripheral wall of the liquid seal pipe 32 form a gas-liquid channel 30. That is, one or more grooves are formed on the outer peripheral wall of the wick 31 to extend from one end to the other end as the gas-liquid passages 30. In the present embodiment, the number of grooves is set to 1. The maximum inscribed circle diameter of the groove is preferably 0.3 mm. In this embodiment, the wick 31 is preferably a bonded fiber.

According to the writing instrument of the present embodiment, further comprising a housing 6 and a partition plate 61, the reservoir tube 4 is integrally provided in the housing 6, and the partition plate 61 serves as a bottom of the reservoir tube 4 at the same time. The partition 61 is provided with a through hole into which the water guide core 31 is inserted.

The liquid seal tube 32 is preferably bonded fiber, and the wall thickness of the liquid seal tube 32 is preferably 1 mm. The liquid seal pipe 32 abuts against the lower side of the liquid storage pipe 4, i.e., against the partition plate 61.

In this embodiment, the portion of the wick 31 that extends beyond the housing 6 is formed as the applicator tip 1, i.e., the applicator tip 1 and the wick 31 are integrally formed.

In this embodiment, the distance between the end of the liquid seal tube 32 near the head 1 and the end of the buffer 2 near the head 1 is preferably 35% to 55% of the height of the buffer 2, and most preferably 50% of the height of the buffer 2.

The application tool according to the present embodiment can be applied to a device that discharges a medium amount of liquid, such as a whiteboard marker or a marker.

Fourth embodiment

FIG. 4a is a schematic diagram of a fourth embodiment of a writing tool according to the present invention; fig. 4b is a schematic cross-sectional view taken along section D-D in fig. 4 a. 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.

As shown in fig. 4a and 4b, the coating and writing tool according to the fourth embodiment includes a coating and writing head 1, a buffer 2 communicating with the outside atmosphere, a gas-liquid exchanger 3, and a liquid storage tube 4 supplying liquid to the gas-liquid exchanger 3, the gas-liquid exchanger 3 having a water diversion core 31, a liquid seal tube 32 covering the outer peripheral wall of the water diversion core 31, and a gas-liquid channel 30 provided between the water diversion core 31 and the liquid seal tube 32; the buffer body 2 is coated on the peripheral wall of the liquid seal tube 32, the capillary pressure of the liquid seal tube 32 is more than 30% greater than that of the buffer body 2, the end part of the liquid seal tube 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid seal tube 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is more than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2.

According to the painting and writing tool of the embodiment, the outer peripheral wall of the water guide core 31 is provided with a groove, and the groove and the inner peripheral wall of the liquid seal pipe 32 form the gas-liquid channel 30. That is, one or more grooves are formed on the outer peripheral wall of the wick 31 to extend from one end to the other end as gas-liquid passages 30. In the present embodiment, the number of grooves is set to 3. The maximum inscribed circle diameter of the groove is preferably 0.1 mm.

In this embodiment, the wick 31 is preferably polyoxymethylene plastic.

The liquid-tight tube 32 is preferably a filter membrane, and the wall thickness of the liquid-tight tube 32 is preferably 0.1 mm. The cushion body 2 is preferably a sponge or a bonded fiber.

According to the writing tool of the present embodiment, the sleeve 62 extending into the liquid storage tube 4 is provided at the bottom of the liquid storage tube 4, and the sleeve 62 and the through hole provided in the spacer 61 and inserted into the water guide core 31 are coaxially provided and have the same inner diameter.

The water guiding core 31 and one end of the liquid seal pipe 32 extend out of the buffer body 2 together and are inserted into the sleeve 62 in the liquid storage pipe 4.

The other end of the water guiding core 31 passes through the liquid seal tube 32 and is inserted into the coating head 1, the tip of the coating head 1 is provided with the ball 11, and the water guiding core 31 is preferably abutted against the ball 11.

During assembly, one end of the water diversion core 31 and one end of the liquid seal pipe 32 are inserted into the sleeve 62 in the liquid storage pipe 4, and the inner peripheral wall of the sleeve 62 is tightly matched with the outer peripheral wall of the liquid seal pipe 32, so that reliable assembly between the liquid storage pipe 4 and the air-liquid exchanger 3 is facilitated.

In this embodiment, the distance between the end of the liquid seal tube 32 near the head 1 and the end of the buffer 2 near the head 1 is preferably 55% to 75% of the height of the buffer 2, and most preferably 70% of the height of the buffer 2. The applicator according to the present embodiment can be used as a device having a small liquid discharge amount, such as a ball-point pen.

Fifth embodiment

FIG. 5a is a schematic diagram of a fifth embodiment of a scribbler tool according to the invention; fig. 5b is a schematic cross-sectional view taken along section E-E in fig. 5 a. The structure of this embodiment is similar to that of the first embodiment, and the same parts as the first embodiment are not described again in the description of this embodiment.

As shown in fig. 5a and 5b, the coating and writing tool according to the fifth embodiment includes a coating and writing head 1, a buffer 2 communicating with the outside atmosphere, a gas-liquid exchanger 3, and a liquid storage tube 4 supplying liquid to the gas-liquid exchanger 3, the gas-liquid exchanger 3 having a water-attracting core 31, a liquid-sealing tube 32 covering the outer circumferential wall of the water-attracting core 31, and a gas-liquid channel 30 provided between the water-attracting core 31 and the liquid-sealing tube 32; the buffer body 2 is coated on the peripheral wall of the liquid seal tube 32, the capillary pressure of the liquid seal tube 32 is more than 30% greater than that of the buffer body 2, the end part of the liquid seal tube 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid seal tube 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is more than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2.

The outer peripheral wall of the water guiding core 31 is provided with a groove, and the groove and the inner peripheral wall of the liquid seal pipe 32 form a gas-liquid channel 30. That is, one or more grooves are formed on the outer peripheral wall of the wick 31 to extend from one end to the other end as gas-liquid passages 30. In the present embodiment, the number of grooves is set to 5. The maximum inscribed circle diameter of two grooves is preferably 0.8mm, and the maximum inscribed circle diameter of the other three grooves is preferably 0.5 mm.

The liquid seal tube 32 is preferably bonded fiber, and the wall thickness of the liquid seal tube 32 is preferably 5mm. The cushion body 2 is preferably a binder fiber. The outer peripheral wall of the liquid seal tube 32 is entirely covered with the buffer body 2.

The painting tool according to the present embodiment further includes a housing 6 and a partition plate 61, and the partition plate 61 is provided with a through hole into which the water guide core 31 is inserted. The bottom of the partition 61 is provided with a lower sleeve 621 extending downwards, and the lower sleeve 621 and the through hole of the partition 61 for inserting the water guiding core 31 are coaxially arranged and have the same inner diameter. The top of the partition 61 is provided with an upper sleeve 622 extending into the liquid storage tube 4, and the inner diameter of the upper sleeve 622 is slightly larger than that of the through hole of the partition 61 for inserting the water guide core 31.

According to the writing instrument of the present embodiment, the reservoir 4 is a replaceable reservoir 4. The liquid storage tube 4 is provided with a socket 41. When assembled, the socket 41 of the reservoir tube 4 is snapped into and sealed with the upper sleeve 622 of the spacer 61. The lower sleeve 621 can be inserted between the liquid seal pipe 32 and the water diversion core 31, and the outer peripheral wall of the lower sleeve 621 is tightly matched with the inner peripheral wall of the liquid seal pipe 32, so that the liquid storage pipe 4 and the gas-liquid exchanger 3 can be reliably assembled conveniently, and the liquid storage pipe 4 can be easily replaced.

In this embodiment, the distance between the end of the liquid seal tube 32 near the head 1 and the end of the buffer 2 near the head 1 is preferably 15% to 35% of the height of the buffer 2, and most preferably 30% of the height of the buffer 2. The applicator according to the present embodiment can be applied to a device that has a large liquid amount, such as a writing brush.

Sixth embodiment

FIG. 6a is a schematic diagram of a writing instrument according to a sixth embodiment of the present invention; fig. 6b is a schematic cross-sectional view taken along section G-G in fig. 6 a. The structure of this embodiment is similar to that of the first embodiment, and the same parts as the first embodiment are not described again in the description of this embodiment.

As shown in fig. 6a and 6b, the coating and writing tool according to the sixth embodiment includes a coating and writing head 1, a buffer 2 communicating with the outside atmosphere, a gas-liquid exchanger 3, and a liquid storage tube 4 supplying liquid to the gas-liquid exchanger 3, the gas-liquid exchanger 3 having a water-introducing core 31, a liquid-seal tube 32 covering the outer peripheral wall of the water-introducing core 31, and a gas-liquid passage 30 provided between the water-introducing core 31 and the liquid-seal tube 32; the buffer body 2 is coated on the peripheral wall of the liquid seal tube 32, the capillary pressure of the liquid seal tube 32 is more than 30% greater than that of the buffer body 2, the end part of the liquid seal tube 32 close to the coating and writing head 1 is positioned between the two end parts of the buffer body 2, and the distance between the end part of the liquid seal tube 32 close to the coating and writing head 1 and the end part of the buffer body 2 close to the coating and writing head 1 is more than or equal to 15% of the height of the buffer body 2 and less than or equal to 75% of the height of the buffer body 2.

According to the painting and writing tool of this embodiment, one end of the water-guiding core 31 extends out of the liquid-sealing pipe 32 and is inserted into the liquid storage pipe 4, and the other end is located inside the liquid-sealing pipe 32, and the distance between the other end and the bottom end face of the liquid-sealing pipe 32 is about one quarter of the axial height of the liquid-sealing pipe 32.

The outer peripheral wall of the water guiding core 31 is provided with a groove, and the groove and the inner peripheral wall of the liquid seal pipe 32 form a gas-liquid channel 30. That is, one or more grooves are formed on the outer peripheral wall of the wick 31 to extend from one end to the other end as gas-liquid passages 30. In the present embodiment, the number of grooves is set to 3. The maximum inscribed circle diameter of the groove is preferably 0.2 mm. In this embodiment, the wick 31 is preferably a bonded fiber.

The liquid seal tube 32 is preferably bonded fiber, and the wall thickness of the liquid seal tube 32 is preferably 0.5 mm. The cushion body 2 is preferably a binder fiber.

According to the writing tool of the present embodiment, the bottom of the reservoir tube 4 is provided with a downwardly extending sleeve 62, and the sleeve 62 is coaxially arranged with the through hole of the partition plate 61 into which the water guide core 31 is inserted and has the same inner diameter. During assembly, the sleeve 62 can be inserted between the liquid seal pipe 32 and the water diversion core 31, and the outer peripheral wall of the sleeve 62 is tightly matched with the inner peripheral wall of the liquid seal pipe 32, so that reliable assembly between the liquid storage pipe 4 and the gas-liquid exchanger 3 is facilitated.

In the present embodiment, the trailing end of the applicator-write head 1 is provided with an integrally formed cylindrical, square-cylindrical or conical insertion portion which is inserted into the liquid seal tube 32, abutting or being close to the water-introducing core 31.

In this embodiment, the distance between the end of the liquid seal tube 32 near the coating head 1 and the end of the buffer 2 near the coating head 1 is preferably 45% to 65% of the height of the buffer 2, and most preferably 60% of the height of the buffer 2.

As shown in fig. 6b, according to the application tool of the present embodiment, the housing 6 and the buffer 2 may be provided with an elliptical cross section, and may be applied to a highlighter or the like having a medium discharge amount.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described 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 and writing tool of the present invention broadly refers to devices for writing and painting in office supplies, various liquid painting devices used in the field of makeup and the like, and the like.

Claims

1. A painting and writing tool comprises a painting and writing head (1), a buffer body (2) communicated with the outside atmosphere, a gas-liquid exchanger (3) and a liquid storage pipe (4) for supplying liquid to the gas-liquid exchanger (3),

the gas-liquid exchanger (3) is provided with a water diversion core (31), a liquid seal pipe (32) coated on the outer peripheral wall of the water diversion core (31) and a gas-liquid channel (30) arranged between the water diversion core (31) and the liquid seal pipe (32);

the buffer body (2) is coated on the outer peripheral wall of the liquid seal pipe (32), and the capillary pressure of the liquid seal pipe (32) is more than 30% greater than that of the buffer body (2); and

the end part of the liquid seal pipe (32) close to the coating and writing head (1) is located between the two end parts of the buffer body (2), and the distance between the end part of the liquid seal pipe (32) close to the coating and writing head (1) and the end part of the buffer body (2) close to the coating and writing head (1) is larger than or equal to 15% of the height of the buffer body (2) and smaller than or equal to 75% of the height of the buffer body (2).

2. The marking instrument according to claim 1, wherein a groove is formed in an outer peripheral wall of the water-introducing core (31), and the groove forms a gas-liquid passage (30) with an inner peripheral wall of the liquid-tight tube (32).

3. A writing tool according to claim 1, wherein the liquid seal tube (32) is made of a porous material.

4. A writing tool according to claim 2, wherein when the gas-liquid passage (30) serves as a gas guide passage, the maximum inscribed circle diameter of the cross section of the gas guide passage is 0.1 to 0.8mm.

5. A tool according to claim 1, wherein said buffer body (2) is made of a porous material.

6. A writing tool according to claim 1, wherein the wick (31) is connected to the writing tip (1) through the lower end of the liquid seal tube (32).

7. A writing instrument according to claim 1, wherein the bottom of the reservoir (4) is provided with a sleeve (62).

8. A writing tool according to claim 1, wherein a protective body (5) is provided below the gas-liquid exchanger (3), the capillary pressure of the protective body (5) being not greater than the capillary pressure of the buffer body (2).

9. A tool according to claim 1, wherein the writing tip (1) is inserted into the gas-liquid exchanger (3) and is connected to a part of the inner wall of the liquid-tight tube (32).

10. An applicator according to any one of claims 1 to 9, characterized in that the distance between the end of the liquid seal tube (32) close to the applicator head (1) and the end of the buffer body (2) close to the applicator head (1) is 30%, 40%, 50%, 60% or 70% of the height of the buffer body (2).