Water-based marker ink refilling structure

Abstract

The utility model relates to the technical field of marker pen, and disclose a water -based marker pen adds ink structure, including including casing, fixedly installed the pen head of casing both ends, set up in the ink adding mouth of casing center place, the cap of clamping in casing both ends, the ink core in casing inside, the ink adding mouth is used for to inject the ink in the ink core, the both ends of ink core and two pen head contact, the outer wall of ink core is covered with transparent film, the both ends fixed setting of ink core have contact head, the cross -sectional area of contact head is greater than the cross -sectional area of ink core main part, the utility model discloses a center ink adding mouth and draw a rope formula sealing plug design, convenient operation laborsaving, sponge ink core cooperation transparent film, ink hole and net -like pore realize ink even diffusion, rubber sealing plug ensures the leakproofness, realizes even ink adding fast, solved the problem that traditional ink adding distribution is uneven, inconvenient operation, significantly promoted ink adding efficiency and product service life.

Description

Technical Field

[0001] This utility model relates to the field of markers, and more particularly to an ink-filling structure for water-based markers. Background Technology

[0002] Currently, most water-based markers use a traditional screw-on refill mechanism. Users need to forcefully rotate the pen tip or end to open the ink port and then directly inject ink into the refill. However, this method is inconvenient and laborious. Since the pen tip and body are usually connected by threads or interference fit, users need to apply a large torque to unscrew it, resulting in a poor user experience and potentially causing the pen tip to loosen or the seal to deteriorate. Furthermore, existing refill methods usually require users to inject ink from one end of the refill (such as the top or bottom). Due to the lack of a flow guide design, the ink tends to concentrate near the injection point and is difficult to penetrate evenly into the sponge material of the refill. This leads to ink concentration at the injection point, with some areas saturated while others remain dry, making it impossible for the pen tip to continuously and stably dispense ink. Users need to refill frequently, affecting the user experience.

[0003] Therefore, a water-based marker ink filling structure was designed. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a water-based marker ink filling structure. It solves the problems of traditional markers requiring force to unscrew the pen tip, resulting in laborious operation, uneven ink distribution due to single-end ink filling, and difficulty in ensuring sufficient ink on both sides of the pen tip, thus affecting the user experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A water-based marker ink filling structure includes a housing, a pen tip fixedly installed at both ends of the housing, an ink filling port opened at the center of the housing, a pen cap snapped onto both ends of the housing, and a pen refill located inside the housing. The ink filling port is used to inject ink into the pen refill.

[0006] Preferably, the two ends of the pen refill are in contact with the two pen tips, and the outer wall of the pen refill is covered with a transparent film.

[0007] Preferably, contact heads are fixedly provided at both ends of the pen refill, and the cross-sectional area of ​​the contact heads is larger than the cross-sectional area of ​​the pen refill body, so as to increase the contact area with the pen tip.

[0008] Preferably, the transparent film has multiple ink inlet holes on both symmetrical sides near the ink inlet, and the multiple ink inlet holes are connected to the pen refill covered by the transparent film.

[0009] Preferably, the pen refill is made of sponge material, which has absorbency and can quickly absorb ink.

[0010] Preferably, the transparent film has multiple mesh pores on both ends near the contact head to enhance the ink adsorption on both sides and ensure sufficient ink supply on both sides of the pen tip.

[0011] Preferably, a sealing plug is fitted inside the ink filling port. The sealing plug is made of rubber and is press-fitted with the ink filling port to achieve a seal.

[0012] Preferably, a pull rope is fixedly provided on the top of the sealing plug, and the pull rope is used to assist in pulling out the sealing plug.

[0013] Preferably, the sealing plug has limiting grooves on both sides, and two protrusions are fixedly provided on the inner wall of the ink filling port. The protrusions are matched and engaged with the limiting grooves, and the protrusions are made of rubber.

[0014] Preferably, the transparent film is fitted with a plurality of fixing rings on its outer side, and each fixing ring has two symmetrical fixing frames fixedly connected to its outer wall, the fixing frames being fixedly connected to the inner wall of the shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention features a central ink filling port design, coupled with a pull-cord sealing plug, allowing users to easily open and close the ink filling port without rotating or disassembling the pen tip. This makes operation more effortless and prevents parts from becoming loose. The sponge pen refill is covered with a transparent film, which allows for rapid ink absorption and bidirectional diffusion through the ink inlet and mesh pores, ensuring that the ink penetrates evenly to both ends of the pen tip and preventing local saturation or drying. The rubber sealing plug and the limiting groove structure form an interference fit, and the protruding block enhances the sealing performance. The fixing ring and the fixing frame work together to fix the pen refill and prevent displacement during ink filling, ensuring accurate ink injection. At the same time, the transparent film allows for real-time observation of the ink level, effectively solving the problems of inconvenient operation and uneven ink distribution in traditional ink filling methods. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structural relationship between the shell, pen refill, and ink inlet hole of this utility model; Figure 3 This is a schematic diagram showing the structural relationship between the ink inlet hole and the sealing plug of this utility model; Figure 4This is a cross-sectional structural diagram of the sealing plug and feed pipe of this utility model.

[0018] Figure number descriptions: 1. Shell; 11. Pen tip; 12. Ink filling port; 121. Protrusion; 2. Pen cap; 3. Pen refill; 31. Transparent film; 32. Contact head; 4. Ink inlet hole; 41. Mesh pores; 5. Sealing plug; 51. Pull cord; 52. Limiting groove; 6. Retaining ring; 61. Fixing bracket. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] Please see Figure 1-4 A water-based marker ink filling structure includes a housing 1, a pen tip 11 fixedly installed at both ends of the housing 1, an ink filling port 12 opened at the center of the housing 1, a pen cap 2 snapped onto both ends of the housing 1, and a pen refill 3 located inside the housing 1. The ink filling port 12 is used to inject ink into the pen refill 3. The two ends of the pen refill 3 are in contact with the two pen tips 11. The outer wall of the pen refill 3 is covered with a transparent film 31. The two ends of the pen refill 3 are fixedly provided with contact heads 32. The cross-sectional area of ​​the contact head 32 is larger than the cross-sectional area of ​​the main body of the pen refill 3, which is used to increase the contact area with the pen tips 11. Multiple ink inlet holes 4 are opened on the symmetrical sides of the transparent film 31 near the ink inlet 12. The multiple ink inlet holes 4 are connected to the pen refill 3 covered by the transparent film 31. The pen refill 3 is made of sponge material, which has absorbency and can quickly absorb ink. Multiple mesh pores 41 are provided on both ends of the transparent film 31 near the contact head 32, which is used to enhance the absorbency of ink on both sides and ensure sufficient ink supply on both sides of the pen tip 11.

[0024] A sealing plug 5 is snapped into the inside of the ink filling port 12. The sealing plug 5 is made of rubber and is press-fitted with the ink filling port 12 to achieve a seal. A pull rope 51 is fixedly installed on the top of the sealing plug 5. The pull rope 51 is used to assist in pulling out the sealing plug 5. Limiting grooves 52 are opened on both sides of the sealing plug 5. Two protrusions 121 are fixedly installed on the inner wall of the ink filling port 12. The protrusions 121 are matched and snapped into the limiting grooves 52. The protrusions 121 are made of rubber. The ink filling mechanism of this water-based marker mainly injects ink into the pen core 3 through the ink filling port 12. The pen core 3 is made of sponge material, which has high absorbency and can quickly absorb ink and evenly deliver it to the pen tips 11 at both ends through capillary action. The outer wall of the pen core 3 is covered with a transparent film 31, and the two ends of the film have contact heads 32 with increased cross-sectional area to enhance the contact area with the pen tips 11 and ensure a stable ink supply. The transparent film 31 has ink inlet holes 4 to facilitate the rapid penetration of ink into the pen core 3. The two ends near the pen tips 11 have mesh pores 41 to further enhance the ink absorption capacity and prevent the pen tips 11 from drying out due to insufficient ink supply. Pull out the sealing plug 5 by pulling the cord 51. Its limiting groove 52 cooperates with the rubber protrusion 121 in the ink filling port 12 to ensure sealing. Ink is injected from the ink filling port 12. The ink is absorbed by the pen core 3 through the ink inlet hole 4 and the ink absorption effect at both ends of the pen tip 11 is enhanced by the mesh pores 41. After ink filling is completed, reinsert the sealing plug 5. The rubber interference fit is used to prevent leakage and complete the ink filling.

[0025] Among them, the sealing plug 5 adopts a flat design, which will not cause discomfort to the user's hand or affect the user's use.

[0026] Multiple fixing rings 6 are fitted around the outside of the transparent film 31. Two symmetrical fixing frames 61 are fixedly connected to the outer wall of each fixing ring 6. The fixing frames 61 are fixedly connected to the inner wall of the shell 1. The cooperation between the retaining ring 6 and the retaining bracket 61 ensures the accurate positioning of the pen refill 3, so that when ink is injected through the ink filling port 12, the ink can be evenly injected into all parts of the pen refill 3. Secondly, the retaining structure can effectively prevent the pen refill 3 from shaking when adding ink, and avoid displacement during ink filling.

[0027] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A water-based marker ink-filling structure, characterized in that, Includes a housing (1), a pen tip (11) fixedly installed at both ends of the housing (1), an ink filling port (12) opened at the center of the housing (1), a pen cap (2) snapped onto both ends of the housing (1), and a pen refill (3) located inside the housing (1). The ink filling port (12) is used to inject ink into the pen refill (3). The two ends of the pen core (3) are in contact with the two pen tips (11), and the outer wall of the pen core (3) is covered with a transparent film (31). The transparent film (31) has multiple ink inlet holes (4) on both sides symmetrically near the ink inlet (12), and the multiple ink inlet holes (4) are connected to the pen refill (3) covered by the transparent film (31). The transparent film (31) has multiple mesh pores (41) on both ends near the contact head (32) to enhance the adsorption of ink on both sides and ensure sufficient ink supply on both sides of the pen tip (11). The ink filling port (12) is fitted with a sealing plug (5), which is made of rubber and is press-fitted with the ink filling port (12) to achieve a seal.

2. The water-based marker ink-filling structure according to claim 1, characterized in that: The pen refill (3) is fixedly provided with contact heads (32) at both ends. The cross-sectional area of ​​the contact head (32) is larger than the cross-sectional area of ​​the main body of the pen refill (3) to increase the contact area with the pen tip (11).

3. The water-based marker ink-filling structure according to claim 2, characterized in that: The pen refill (3) is made of sponge material, which has absorbency and can quickly absorb ink.

4. The water-based marker ink-filling structure according to claim 3, characterized in that: A pull rope (51) is fixedly provided on the top of the sealing plug (5), and the pull rope (51) is used to assist in pulling out the sealing plug (5).

5. The water-based marker ink-filling structure according to claim 4, characterized in that: The sealing plug (5) has a limiting groove (52) on both sides. Two protrusions (121) are fixedly provided on the inner wall of the ink filling port (12). The protrusions (121) are matched and engaged with the limiting grooves (52). The protrusions (121) are made of rubber.

6. The water-based marker ink-filling structure according to claim 1, characterized in that: The transparent film (31) is fitted with a plurality of fixing rings (6), and each fixing ring (6) has two symmetrical fixing frames (61) fixedly connected to its outer wall. The fixing frames (61) are fixedly connected to the inner wall of the shell (1).

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