Liquid eyeliner

By using a splitter composed of a splitter and a surround member in the liquid eyeliner pen, the capillary effect is used to introduce liquid eyeliner into the brush, which solves the problems of difficult production, high cost and cumbersome assembly of the flow guide parts in the prior art, and achieves uniform ink output and smooth flow, reducing production costs and improving assembly efficiency.

CN222982639UActive Publication Date: 2025-06-17HANGZHOU XINYUE COSMETICS CO LTD
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Patent Information

Application Number
CN202422034021.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-20
Publication Date
2025-06-17
Estimated Expiration
2034-08-20

AI Technical Summary

Technical Problem

The production of flow guide parts in existing liquid eyeliners is difficult and costly, and the assembly steps are cumbersome, resulting in high production costs and low assembly efficiency.

Method used

A liquid eyeliner pen is designed, using a splitter composed of a splitter consisting of a splitter column and an enclosure. The splitter is equipped with a capillary groove and a diversion groove. The liquid eyeliner is uniformly introduced into the brush through the capillary effect, replacing the traditional water-guiding core.

Benefits of technology

The uniform ink output and smoothness of eyeliner liquid is achieved, the production cost is reduced, the assembly process is simplified, and the assembly efficiency is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The liquid eyeliner comprises a penholder and a pen point, the penholder and the pen point are connected in a clamped mode, a brush is arranged in the pen point, and a tail plug is connected to the end, away from the pen point, of the penholder in a clamped mode; the pen is characterized in that a flow divider is arranged in the pen holder, the flow divider comprises a flow dividing column and a surrounding piece surrounding the outer side of the flow dividing column, the side wall part of the flow dividing column is concaved inwards to form a capillary groove, the capillary groove penetrates through the two ends of the flow dividing column in the axial direction, and the surrounding piece can cover a groove opening of the capillary groove so that the capillary groove can form a long and thin cavity with the two ends open; one end of the flow dividing column is connected with the brush in an inserted mode, a first sealing plug is arranged at the other end of the flow dividing column, a closed eyeliner liquid cavity is formed between the first sealing plug and the tail plug, and the surface of the first sealing plug is partially concave and penetrates to form a first flow guide groove communicating with the eyeliner liquid cavity and the capillary groove. The liquid eyeliner has the beneficial effects that the assembling efficiency can be improved, and the production cost can be reduced.
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Description

Technical Field

[0001] This application relates to the technical field of cosmetic tools, and more particularly, to a liquid eyeliner pen. Background Art

[0002] A liquid eyeliner pen is a type of cosmetic used to finely draw eyeliner to enhance the contour and depth of the eyes; the eyeliner pen has advantages such as smoothness, soft texture, and precise makeup application.

[0003] Existing liquid eyeliner pens need to use a liquid guiding core to evenly and smoothly introduce the eyeliner liquid into the brush to avoid problems such as inkjet and ink leakage. The liquid guiding core is a slender tubular structure, which is difficult to produce, has a high production cost, and needs to be assembled into the eyeliner pen in cooperation with other components, and the assembly steps are cumbersome;

[0004] Therefore, it is necessary to design a liquid eyeliner pen in which the diversion component has a low production cost and is easy to assemble, which can reduce the production cost of the eyeliner pen and improve the assembly efficiency. Summary of the Utility Model

[0005] The content part of this application is used to briefly introduce concepts, which will be described in detail in the following specific implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] To solve the technical problems mentioned in the above background art part, some embodiments of this application provide a liquid eyeliner pen, including a pen barrel and a nib. The pen barrel and the nib are snap-connected to each other. A brush is arranged inside the nib, and a tail plug is snap-connected to one end of the pen barrel away from the nib. It is characterized in that: a diverter is arranged inside the pen barrel. The diverter includes a diversion column and an enclosing member surrounding the outside of the diversion column. A capillary groove is formed by partial concave of the side wall of the diversion column, and the capillary groove axially penetrates both ends of the diversion column. The enclosing member can cover the notch of the capillary groove so that the capillary groove forms a slender chamber with two open ends; one end of the diversion column is inserted into the brush, and a first sealing plug is arranged at the other end. A closed eyeliner liquid chamber is formed between the first sealing plug and the tail plug, and a first diversion groove communicating the eyeliner liquid chamber and the capillary groove is formed by partial concave and penetration of the surface of the first sealing plug.

[0007] During use, due to the provision of a flow dividing column and an enclosing member surrounding the outside of the flow dividing column, the enclosing member can cover the notch of the capillary groove on the flow dividing column, causing the capillary groove to form an elongated chamber with openings at both ends; since the first diversion groove on the first sealing plug communicates with the capillary groove, the elongated chamber formed by the connection of the capillary groove and the first diversion groove will cause capillary action on the eyeliner liquid in the eyeliner liquid chamber, and the eyeliner liquid can be sucked into the first diversion groove and the capillary groove; since one end of the flow dividing column is inserted into the brush, the brush can adsorb the eyeliner liquid in the capillary groove, thereby wetting the brush with the eyeliner liquid. At the same time, due to capillary action, the capillary groove can automatically introduce the eyeliner liquid into the brush according to the filling amount of the eyeliner liquid in the brush, so that the eyeliner pen can ink evenly and smoothly; the mutual cooperation of the flow dividing column and the enclosing member replaces the traditional water guiding core, which can reduce production costs and is convenient for assembly.

[0008] Further, a first flow dividing rod is provided at one end of the flow dividing column close to the brush. A part of the side wall of the first flow dividing rod is recessed inward to form a first flow dividing groove communicating with the capillary groove, and the cross-sectional area of the first flow dividing groove is smaller than the cross-sectional area of the capillary groove;

[0009] A second flow dividing rod is fixedly provided at one end of the first flow dividing rod close to the brush. A part of the side wall of the second flow dividing rod is recessed inward to form a second flow dividing groove communicating with the first flow dividing groove, and the cross-sectional area of the second flow dividing groove is smaller than the cross-sectional area of the first flow dividing groove. The second flow dividing rod is inserted into the brush.

[0010] The provision of the first flow dividing groove and the second flow dividing groove can gradually control the flow rate of the eyeliner liquid, avoiding the problem of ink leakage caused by excessive flow rate resulting in too much eyeliner liquid in the brush.

[0011] Further, a second sealing plug is provided between the first flow dividing rod and the flow dividing column. A flow-through cavity is formed between the second sealing plug and the first sealing plug. One end of the second sealing plug is connected to the flow dividing column, and the other end is connected to the first flow dividing rod;

[0012] A part of the surface of the second sealing plug is recessed and penetrated to form a second diversion groove communicating the capillary groove with the first flow dividing groove.

[0013] The provision of the second sealing plug can prevent the eyeliner liquid in the capillary groove from seeping out between the capillary groove and the enclosing member and flowing into the nib, causing the problem of ink leakage.

[0014] Further, the enclosing member includes a plurality of enclosing pieces and a connecting portion connecting adjacent two enclosing pieces. The connecting portion has flexibility so that the enclosing pieces can be turned over.

[0015] The provision of the enclosing pieces and the connecting portion enables the enclosing member to expand and retract relative to the flow dividing column.

[0016] Further, the flow dividing column is fixedly connected to any one of the enclosing pieces;

[0017] The first sealing plug and the second sealing plug are respectively fixedly arranged at two ends of any enclosing piece.

[0018] The mutual connection of the first sealing plug, the second sealing plug, the diverter column and the enclosure can facilitate assembly by workers and improve assembly efficiency.

[0019] Furthermore, the side wall portion of the enclosing piece protrudes to form an abutting portion abutting against the inner wall of the pen barrel.

[0020] The setting of the abutment portion can make the enclosing piece abut against the inner wall of the pen barrel, so that the enclosing piece can tightly cover the notch of the capillary groove.

[0021] Furthermore, a drainage column is fixedly arranged on the first sealing plug, and a side wall portion of the drainage column is concave to form a drainage groove connected to the first guide groove.

[0022] The provision of the drainage groove can increase the contact area with the eyeliner liquid, making it easier to introduce the eyeliner liquid into the capillary groove.

[0023] Furthermore, a surface portion of the second sealing plug is concave and penetrates to form an air passage.

[0024] The setting of the air channel can connect the air in the circulation cavity with the outside air, making it easy for air to enter the eyeliner liquid cavity from the capillary groove, thereby balancing the air pressure difference between the eyeliner liquid cavity and the outside, making the eyeliner pen discharge ink smoothly.

[0025] Furthermore, the side wall portion of the pen tip is concave to form an air inlet groove.

[0026] The setting of the air inlet groove facilitates the air to enter the pen barrel from the outside.

[0027] Furthermore, an upper cover is sleeved on the pen barrel, an inner cover is installed inside the upper cover, and the upper cover and the inner cover are connected by an elastic member.

[0028] The setting of the inner cover can seal the brush to prevent the eyeliner liquid on the brush from evaporating and causing the brush to dry out.

[0029] The beneficial effects of the present application are as follows: the eyeliner liquid in the eyeliner liquid cavity produces a capillary effect through the slender chamber formed by the diverter column and the enclosing piece, and the eyeliner liquid is continuously introduced into the brush, so that the eyeliner pen can discharge ink evenly and smoothly; since the slender tube is difficult to produce and process, the production cost can be reduced by assembling and enclosing; by connecting a plurality of enclosing pieces to each other, and the first sealing plug and the second sealing plug are fixedly arranged at both ends of the enclosing piece, the diverter column is fixedly connected to the enclosing piece, so that the assembly efficiency can be improved, and the assembly can be completed by only enclosing the enclosing piece on the diverter column and inserting the second diverter rod into the brush in the pen holder, which can improve the assembly efficiency of the eyeliner pen. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more apparent. The schematic embodiments and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application.

[0031] In addition, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and the elements and components are not necessarily drawn to scale.

[0032] In the drawings:

[0033] Figure 1 is a schematic diagram of the overall sectional structure of an embodiment of this application;

[0034] Figure 2 is an exploded view of the installation of a part of the structure of an embodiment of this application, mainly showing the installation method of the diverter;

[0035] Figure 3 is Figure 2 an enlarged view of part A of

[0036] Figure 4 is a schematic diagram of a part of the structure of an embodiment of this application, mainly showing the structure of the diverter;

[0037] Figure 5 is a schematic diagram of a part of the structure of an embodiment of this application, mainly showing the state of the diverter and the position of the first diversion groove when the enclosing piece is unfolded;

[0038] Figure 6 is a schematic diagram of a part of the structure of an embodiment of this application, mainly showing the position of the second diversion groove.

[0039] Reference numerals:

[0040] 1. Pen barrel;

[0041] 2. Pen tip; 201. Air inlet groove;

[0042] 3. Brush;

[0043] 4. Tail plug;

[0044] 5. Shunt; 501. Shunt column; 501a. Capillary groove; 502. Enclosure; 503. First sealing plug; 503a. First diversion groove; 504. Enclosing piece; 504a. First enclosing piece; 504b. Second enclosing piece; 504c. Third enclosing piece; 505. Connecting part; 506. Second sealing plug; 506a. Second diversion groove; 507. First shunt rod; 507a. First shunt groove; 508. Second shunt rod; 508a. Second shunt groove; 509. Flow cavity; 510. Contact part; 511. Drainage column; 511a. Drainage groove; 512. Air passage;

[0045] 6. Eyeline liquid cavity;

[0046] 7. Upper cover; 701. Inner cover; 702. Elastic member. Detailed implementation manners

[0047] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0048] In addition, it should be noted that for the sake of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0049] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.

[0050] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless clearly stated otherwise in the context, it should be understood as "one or more".

[0051] The present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0052] A liquid eyeliner pen, comprising a pen barrel 1 and a nib 2, the pen barrel 1 and the nib 2 are snap-connected to each other, a brush 3 is arranged inside the nib 2, and a tail plug 4 is snap-connected to one end of the pen barrel 1 away from the nib 2; a flow divider 5 is arranged inside the pen barrel 1, the flow divider 5 includes a flow dividing column 501 and an enclosing member 502 surrounding the outside of the flow dividing column 501, a capillary groove 501a is formed by partial concave of the side wall of the flow dividing column 501, the capillary groove 501a axially penetrates through both ends of the flow dividing column 501, and the enclosing member 502 can cover the notch of the capillary groove 501a to form an elongated chamber with both ends open for the capillary groove 501a; one end of the flow dividing column 501 is inserted into the brush 3, and a first sealing plug 503 is arranged at the other end, a closed eyeliner liquid chamber 6 is formed between the first sealing plug 503 and the tail plug 4, and a first diversion groove 503a communicating the eyeliner liquid chamber 6 with the capillary groove 501a is formed by partial concave of the surface of the first sealing plug 503 and axially penetrating through the first sealing plug 503.

[0053] It should be noted that the enclosing member 502 and the flow dividing column 501 enclose each other to enclose the capillary groove 501a into an elongated chamber, and the connection between the capillary groove 501a and the first diversion groove 503a can cause the capillary effect of the eyeliner liquid in the eyeliner liquid chamber 6, so that the eyeliner liquid is sucked into the capillary groove 501a; since the flow dividing column 501 is inserted into the brush 3, the brush 3 can adsorb the eyeliner liquid in the capillary groove 501a, and the capillary effect enables the capillary groove 501a to automatically conduct the eyeliner liquid according to the filling amount of the eyeliner liquid in the brush 3.

[0054] In this embodiment, the flow dividing column 501 and the enclosing member 502 have the same length along the axial direction of the pen barrel 1, the enclosing member 502 includes three enclosing pieces 504 and a connecting portion 505 connecting adjacent two enclosing pieces 504, and the connecting portion 505 has flexibility to enable the enclosing pieces 504 to be turned over;

[0055] Specifically, the three enclosing pieces 504 include a first enclosing piece 504a, a second enclosing piece 504b, and a third enclosing piece 504c. Among them, one end of the first enclosing piece 504a close to the tail plug 4 is fixedly connected to the first sealing plug 503, and the second enclosing piece 504b is fixedly connected to the flow dividing column 501.

[0056] It should be noted that the insertion method of the flow dividing column 501 and the brush 3 is as follows: a second sealing plug 506 is fixedly arranged at one end of the first enclosing piece 504a away from the first sealing plug 503, a second diversion groove 506a is formed by partial concave of the surface of the second sealing plug 506 and axially penetrating through the second sealing plug 506, and the second diversion groove 506a is communicated with the capillary groove 501a;

[0057] A first flow dividing rod 507 is fixedly arranged at one end of the second sealing plug 506 away from the first sealing plug 503. A side wall portion of the first flow dividing rod 507 is concave inward, and a first flow dividing groove 507a is formed axially through both ends of the first flow dividing rod 507. The first flow dividing groove 507a communicates with the second diversion groove 506a; a second flow dividing rod 508 is fixedly arranged at one end of the first flow dividing rod 507 away from the second sealing plug 506. A side wall portion of the second flow dividing rod 508 is concave inward, and a second flow dividing groove 508a is formed axially through both ends of the second flow dividing rod 508. The second flow dividing groove 508a communicates with the first flow dividing groove 507a;

[0058] By inserting the second flow dividing rod 508 into the brush 3, the insertion of the flow dividing column 501 and the brush 3 is realized. When the enclosing piece 504 encloses the flow dividing column 501, the first sealing plug 503, the second sealing plug 506, the first flow dividing rod 507, and the second flow dividing rod 508 are all coaxially arranged with the flow dividing column 501;

[0059] Wherein, the cross-sectional area of the second diversion groove 506a is less than or equal to the cross-sectional area of the capillary groove 501a, the cross-sectional area of the first flow dividing groove 507a is less than the cross-sectional area of the second diversion groove 506a, and the cross-sectional area of the second flow dividing groove 508a is less than the cross-sectional area of the first flow dividing groove 507a. By continuously reducing the cross-sectional areas of the first flow dividing groove 507a and the second flow dividing groove 508a, the flow rate of the eyeliner liquid flowing into the brush 3 can be controlled, avoiding problems such as inkjet and ink leakage caused by excessive flow rate of the eyeliner liquid;

[0060] A sealed flow cavity 509 is formed between the first sealing plug 503 and the second sealing plug 506. The setting of the second sealing plug 506 can prevent the eyeliner liquid from seeping out from the gap between the enclosing piece 504 and the flow dividing column 501 and flowing to the pen tip 2, further preventing ink leakage of the eyeliner pen;

[0061] Furthermore, a contact portion 510 that abuts against the inner wall of the pen barrel 1 is formed by protruding a side wall portion of the enclosing piece 504. When the enclosing piece 504 encloses the periphery of the flow dividing column 501 and the flow divider 5 is inserted into the pen barrel 1, the contact portion 510 can abut against the inner wall of the pen barrel 1, so that the side wall of the enclosing piece 504 and the flow dividing column 501 are closely attached, and further the enclosing piece 504 can cover the notch of the capillary groove 501a, effectively preventing the eyeliner liquid in the capillary groove 501a from seeping out from the gap between the enclosing piece 504 and the flow dividing column 501.

[0062] Even further, a drainage column 511 is fixedly arranged at one end of the first sealing plug 503 close to the eyeliner liquid cavity 6. A side wall portion of the drainage column 511 is concave inward, and a drainage groove 511a that communicates with the first diversion groove 503a is formed axially through the drainage column 511. The drainage groove 511a extends into the eyeliner liquid cavity 6, which can increase the contact area with the eyeliner liquid and facilitate introducing the eyeliner liquid into the capillary groove 501a.

[0063] Furthermore, an upper cover 7 is sleeved on the pen barrel 1. An inner cover 701 is installed inside the upper cover 7. The upper cover 7 and the inner cover 701 are connected by an elastic member 702, and the elastic member 702 is a spring. When the upper cover 7 is sleeved on the pen barrel 1, the inner cover 701 can abut against the pen barrel 1, thereby compressing the spring. The spring presses the inner cover 701 tightly against the pen barrel 1, isolating the brush 3 from the outside air, avoiding the influence of external air pressure changes during the transportation of the eyeliner pen, and at the same time preventing the eyeliner liquid in the brush 3 from volatilizing and drying up.

[0064] A part of the side wall of the nib 2 is concave to form an air inlet groove 201. When the upper cover 7 is opened, air can enter the pen barrel 1 from the air inlet groove 201, so that the air can enter the eyeliner liquid chamber 6 through the first shunt groove 507a, the second diversion groove 506a, the capillary groove 501a, and the first diversion groove 503a, balancing the air pressure between the eyeliner liquid chamber 6 and the outside, and avoiding the influence of air pressure on the conduction of the eyeliner liquid;

[0065] Preferably, a part of the surface of the second sealing plug 506 is concave and axially penetrates through the second sealing plug 506 to form an air passage 512. The air passage 512 can communicate the circulation chamber 509 with the outside air. When the air cannot flow smoothly through the first shunt groove 507a, the second diversion groove 506a, the capillary groove 501a, and the first diversion groove 503a into the eyeliner liquid chamber 6, the air passage 512 can conduct the air into the circulation chamber 509, so that the air can enter the eyeliner liquid chamber 6 through the gap between the enclosing piece 504 and the shunt column 501, further balancing the air pressure in the eyeliner liquid chamber 6.

[0066] It should be noted that in this embodiment, the enclosing piece 504, the shunt column 501, the first sealing plug 503, the second sealing plug 506, the first shunt rod 507, the second shunt rod 508, and the drainage column 511 that are interconnected on the shunt 5 are made of PP material through an integral molding process. Using this process reduces the production cost of the shunt 5 and solves the problems of difficult production and high production cost of traditional water guiding cores. At the same time, during assembly, only the enclosing piece 504 needs to be enclosed on the drainage column 511 and the second shunt rod 508 needs to be inserted into the brush 3, which can improve the assembly efficiency of the eyeliner pen.

[0067] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A liquid eyeliner, comprising a pen holder (1) and a pen tip (2), wherein the pen holder (1) and the pen tip (2) are mutually clamped, a brush (3) is arranged inside the pen tip (2), and a tail plug (4) is clamped at one end of the pen holder (1) away from the pen tip (2); characterized in that: A flow divider (5) is arranged inside the pen holder (1), and the flow divider (5) comprises a flow divider column (501) and an enclosure (502) enclosing the outside of the flow divider column (501), the side wall portion of the flow divider column (501) is concave to form a capillary groove (501a), and the capillary groove (501a) axially penetrates both ends of the flow divider column (501), and the enclosure (502) can cover the notch of the capillary groove (501a) so that the capillary groove (501a) The fine groove (501a) forms an elongated chamber with two ends open; one end of the diverter column (501) is plugged into the brush (3), and the other end is provided with a first sealing plug (503); a sealed eyeliner liquid chamber (6) is formed between the first sealing plug (503) and the tail plug (4); a surface portion of the first sealing plug (503) is concave and penetrates through to form a first guide groove (503a) connecting the eyeliner liquid chamber (6) and the capillary groove (501a).

2. The liquid eyeliner according to claim 1, characterized in that: A first diverter rod (507) is arranged at one end of the diverter column (501) close to the brush (3); a side wall portion of the first diverter rod (507) is concave to form a first diverter groove (507a) connected to the capillary groove (501a); and a cross-sectional area of ​​the first diverter groove (507a) is smaller than a cross-sectional area of ​​the capillary groove (501a); A second diverter rod (508) is fixedly arranged at one end of the first diverter rod (507) close to the brush (3); the side wall portion of the second diverter rod (508) is concave to form a second diverter groove (508a) connected to the first diverter groove (507a); the cross-sectional area of ​​the second diverter groove (508a) is smaller than the cross-sectional area of ​​the first diverter groove (507a); and the second diverter rod (508) is inserted into the brush (3).

3. The liquid eyeliner according to claim 2, characterized in that: A second sealing plug (506) is arranged between the first diverter rod (507) and the diverter column (501), a flow cavity (509) is formed between the second sealing plug (506) and the first sealing plug (503), one end of the second sealing plug (506) is connected to the diverter column (501), and the other end is connected to the first diverter rod (507); The surface portion of the second sealing plug (506) is concave and penetrates to form a second guide groove (506a) connecting the capillary groove (501a) and the first diversion groove (507a).

4. The liquid eyeliner according to claim 3, characterized in that: The enclosure (502) comprises a plurality of enclosure sheets (504) and a connecting portion (505) connecting two adjacent enclosure sheets (504), wherein the connecting portion (505) is flexible so that the enclosure sheets (504) can be turned over.

5. The liquid eyeliner according to claim 4, characterized in that: The diverter column (501) is fixedly connected to any one of the enclosing sheets (504); The first sealing plug (503) and the second sealing plug (506) are respectively fixedly arranged at two ends of any one of the enclosing sheets (504).

6. The liquid eyeliner according to claim 4, characterized in that: The side wall portion of the enclosing piece (504) protrudes to form a contact portion (510) that contacts the inner wall of the pen holder (1).

7. The liquid eyeliner according to claim 1, characterized in that: A drainage column (511) is fixedly arranged on the first sealing plug (503), and a side wall portion of the drainage column (511) is concave to form a drainage groove (511a) that is connected to the first guide groove (503a).

8. The liquid eyeliner according to claim 3, characterized in that: The surface portion of the second sealing plug (506) is concave and penetrates to form an air channel (512).

9. The liquid eyeliner according to claim 1, characterized in that: The side wall portion of the pen tip (2) is concave to form an air inlet groove (201).

10. The liquid eyeliner according to claim 9, characterized in that: An upper cover (7) is sleeved on the pen holder (1), an inner cover (701) is installed inside the upper cover (7), and the upper cover (7) and the inner cover (701) are connected via an elastic member (702).