Large capacity propylene double-head marker pen with replaceable refill

Abstract

This utility model discloses a high-capacity double-ended acrylic marker with replaceable refills, relating to the field of writing and drawing tools. It includes a refill, an ink chamber, a barrel, and a cap. The barrel is hollow and double-ended, serving as a connecting rod for the two pen tips. An ink reservoir is inserted into the ink chamber. The front end of the refill protrudes from the front end of the ink reservoir cap, and the rear end of the cap is inserted into the ink chamber, sealing it. Ink flows from the ink reservoir into the refill. The cap fits over the front end of the ink chamber, housing the refill. A core sleeve is installed inside the cap, completely encasing the refill to prevent the ink from drying out. This high-capacity double-ended acrylic marker with replaceable refills, by designing a hollow, double-ended barrel and using replaceable double-ended refills, allows for flexible refill replacement, solving the problem of non-replaceable refills in traditional markers and improving ease of use and economy.

Description

Technical Field

[0001] This utility model relates to the field of writing and drawing tools, specifically a high-capacity acrylic double-ended marker with replaceable refills. Background Technology

[0002] A marker is a colored pen used for writing or drawing. It contains ink and usually comes with a cap. It generally has a firm or soft nib and a double tip. The ink in markers is volatile and is used for quick, one-time drawings. They are commonly used for designing objects, advertising slogans, posters, woodblock printing, or other artistic creations.

[0003] However, existing markers are prone to errors during the coloring process and cannot be used by two users simultaneously.

[0004] To address the aforementioned shortcomings, Chinese Patent No. CN222959490U discloses a detachable dual-ended marker, comprising a first refill assembly, a second refill assembly, a first outer shell assembly, a first connecting assembly, a second connecting assembly, and a second outer shell assembly. The first and second refill assemblies utilize multiple limiting grooves to facilitate user replacement of round and axe-shaped tips. The first and second connecting assemblies are threaded together to separate the dual-ended marker while maintaining a seal. The first outer shell assembly includes a first storage cap, a first mounting cylinder, a first housing, a first slot, and a first ink tube. The first mounting cylinder is fixedly connected to the front end of the first housing. The inner wall of the cylinder is uniformly provided with limiting blocks. The first pigment tube is movably installed on the inner wall of the first housing. The first storage cover is adapted to the first mounting cylinder. In use, the first housing assembly can effectively prevent the pigment in the first pigment tube from evaporating through the well-sealed first housing. The first storage cover can protect the round pen tip when not in use. Multiple limiting grooves and two mounting blocks can be used to facilitate quick replacement of the round pen tip and the axe-shaped pen tip. The threaded column and threaded cylinder can separate the double-ended marker when needed, so that it can be used separately for drawing, and its sealing performance is guaranteed. This solves the problem that it is difficult to separate the two ends of the double-ended marker for separate work and that the pen tip is inconvenient to replace quickly.

[0005] The device described above uses a threaded post and a threaded cylinder to facilitate the separation of the double-ended marker during use. However, the pen refill is a one-piece design and cannot be replaced. Furthermore, it is difficult for users to intuitively understand the remaining ink level, often resulting in interruptions in their creative process due to insufficient ink. Utility Model Content

[0006] The purpose of this invention is to provide a high-capacity acrylic double-ended marker with replaceable refills, in order to solve the problems mentioned in the background art, such as the inability to replace the refills and the difficulty in intuitively understanding the remaining ink level.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-capacity acrylic double-ended marker with replaceable refills, comprising a refill, an ink chamber, a barrel, and a cap. The barrel is hollow and double-ended, serving as a connecting rod for the two pen tips. The ink chamber is threaded onto the end of the barrel. An ink reservoir cap is fitted over the front end of the ink chamber. The rear end of the refill is inserted into the ink reservoir. The refill is installed at the front end of the ink chamber via the ink reservoir and the ink reservoir cap. A retainer block is installed inside the ink chamber. The front end of the refill protrudes from the front end of the ink reservoir cap, and the rear end of the ink reservoir cap is engaged with the ink chamber, sealing it. Ink flows from the ink reservoir into the refill. The cap is fitted over the front end of the ink chamber, housing the refill. A core sleeve is installed inside the cap, completely enclosing the refill to prevent the ink from drying out.

[0008] Furthermore, the pen refill is a replaceable double-ended refill with an overall structure that is thin at both ends and thick in the middle. The 1mm thicker part in the middle of the pen refill is the ink-absorbing core, which can absorb more ink. The thin tip of the pen refill allows for fast ink flow, and the color will not fade when the ink-absorbing core is used.

[0009] Furthermore, the ink chamber has a transparent observation window on its wall, and the observation window has a capacity scale, which can accurately determine the internal ink content.

[0010] Furthermore, the lower end of the ink chamber is provided with a connecting thread and a pen sleeve retaining ring. The connecting thread is connected to the internal thread of the pen barrel end, and the pen sleeve retaining ring is connected to the pen sleeve. The pen sleeve retaining ring is engaged with the inner wall of the pen sleeve, so that it is tightly fitted onto the front end of the ink chamber.

[0011] Furthermore, an adjustable pen clip is installed on the outside of the pen cap. The pen clip is installed in the middle of the pen cap, and its front end is bent to form a closed track.

[0012] Furthermore, a sliding clamp is engaged with the pen clip, and the sliding clamp moves along the pen clip to adjust the pen clip tightness.

[0013] Furthermore, the ink reservoir has an ink intake port at its rear end, which is connected to the pen refill. The ink intake port introduces ink from the ink chamber into the pen refill. The ink reservoir has a cover retaining ring at its front end, and the ink reservoir cover is fitted onto the ink reservoir at its rear end. The cover retaining ring secures the ink reservoir cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) By designing the pen barrel as a hollow and double-ended structure, and using a replaceable double-ended pen refill, the pen refill can be flexibly replaced, solving the problem that traditional marker pen refills cannot be replaced, and improving the convenience and economy of use.

[0016] (2) The transparent observation window and capacity scale on the ink chamber allow users to intuitively and accurately understand the remaining amount of ink, avoiding interruptions in creation due to insufficient ink and improving creation efficiency.

[0017] (3) The inner sleeve installed inside the pen cap completely covers the pen refill, effectively preventing the ink from drying out and ensuring the pen refill stays moist and the ink flows smoothly. The pen clip design with adjustable tightness on the outside of the pen cap further meets the user's fixed needs in different usage scenarios, enhancing the practicality and adaptability of the product.

[0018] (4) The design of connecting the ink inlet at the rear end of the ink reservoir with the pen refill ensures that the ink can flow smoothly and continuously into the pen refill, providing a stable ink supply for the pen refill, ensuring the continuity of writing and the uniformity of color. The tight fit between the cap ring at the front end of the ink reservoir and the ink reservoir cap further enhances the sealing of the structure and prevents ink leakage and evaporation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the pen barrel of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the ink cavity of this utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the pen refill of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the ink reservoir of this utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the pen cap of this utility model.

[0025] In the diagram: 1. Pen refill; 11. Ink cartridge; 2. Ink chamber; 21. Observation window; 22. Capacity scale; 23. Connecting thread; 24. Pen cap retainer; 3. Pen barrel; 4. Pen cap; 41. Pen clip; 42. Sliding clip; 5. Ink reservoir; 51. Ink intake port; 52. Cap retainer; 6. Ink reservoir cap; 7. Refill sleeve. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figure 1 - Figure 2 This utility model provides the following technical solution: a high-capacity acrylic double-ended marker with replaceable refills, comprising a refill 1, an ink chamber 2, a pen barrel 3, and a pen sleeve 4. The pen barrel 3 has a hollow structure and a double-ended structure. The pen barrel 3 is a connecting rod connecting the two pen tips. The ink chamber 2 is threaded onto the end of the pen barrel 3. The front end of the ink chamber 2 is fitted with an ink reservoir cap 6. The rear end of the refill 1 is inserted into the ink reservoir 5. The front end of the ink chamber 2 is fitted with the refill 1 through the ink reservoir 5 and the ink reservoir cap 6. The ink reservoir 5 is inserted into the ink chamber 2 with a locking block. The front end of the refill 1 protrudes from the front end of the ink reservoir cap 6, and the rear end of the ink reservoir cap 6 is locked into the ink chamber 2, sealing the ink chamber 2. Ink flows from the ink reservoir 5 into the refill 1. The pen sleeve 4 is fitted onto the front end of the ink chamber 2, and the refill 1 is incorporated into the pen sleeve 4. A core sleeve 7 is installed inside the pen sleeve 4. The core sleeve 7 completely covers the refill 1, making it less likely for the ink to dry out.

[0028] The pen refill 1 features a replaceable structure. When the ink in refill 1 runs out, only refill 1 needs to be replaced, eliminating the need to discard the entire marker. This reduces user costs, minimizes resource waste, and enhances product sustainability. The unique ink chamber 2 design, combined with the ink refill structure of refill 1, effectively increases the marker's ink capacity. Compared to traditional markers, users do not need to frequently replace the pen or refill the ink. The transparent viewing window 21 and capacity scale 22 on the wall of the ink chamber 2 allow users to intuitively and accurately understand the remaining ink level, facilitating advance preparation for refilling or replacing refill 1. The core sleeve 7 inside the pen cap 4 completely covers the pen refill 1, effectively isolating it from air and preventing the ink from drying out, maintaining the refill's good performance and extending the marker's lifespan. The adjustable pen clip 41 on the outside of the pen cap 4 allows for adjustment of the clip's tightness via a sliding clip 42, adapting to different carrying and fixing scenarios. Whether clipped to a clothing pocket, a notebook, or fixed to other surfaces, the clamping force can be adjusted according to actual needs, satisfying diverse user habits and scenario requirements.

[0029] Example 2:

[0030] Based on Example 1, please refer to Figure 2 - Figure 5The capacity scale 22 was also disclosed, and its specific structure is as follows: The pen refill 1 is a replaceable double-ended pen refill 1. The overall structure is thin at both ends and thick in the middle. The thick part in the middle of the pen refill 1 is the ink-absorbing core 11, which can absorb more ink. The front end of the pen refill 1 is thin and the ink flows out quickly. With the ink-absorbing core 11, the color will not fade. The wall of the ink chamber 2 is provided with a transparent observation window 21. The observation window 21 is provided with a capacity scale 22, which can accurately know the internal ink content. The lower end of the ink chamber 2 is provided with a connecting thread 23 and a pen cap retaining ring 24. The connecting thread 23 is connected to the internal thread at the end of the pen barrel 3. The pen cap retaining ring 24 is connected to the pen cap 4. The pen cap retaining ring 24 is inserted into the inner wall of the pen cap 4, so that it is tightly fitted at the front end of the ink chamber 2.

[0031] Depend on Figure 3 As can be seen, by setting a transparent observation window 21 and a capacity scale 22 on the wall of the ink chamber 2, this design allows the user to clearly know the remaining ink level without opening the pen cap 4, simply by observation. The tight connection between the connecting thread 23 and the internal thread at the end of the pen barrel 3 ensures the stability of the connection between the ink chamber 2 and the pen barrel 3. During writing or drawing, even if the marker is subjected to a certain external force, the ink chamber 2 will not easily loosen or fall off, ensuring the normal use of the marker. The tight engagement between the pen cap retainer 24 and the inner wall of the pen cap 4 allows the pen cap 4 to be securely fitted onto the front end of the ink chamber 2, effectively protecting the pen refill 1 from external impacts and damage, and also facilitating the disassembly and installation of the pen cap 4. When the marker needs to be used, the pen cap 4 can be easily removed, and after use, the pen cap 4 can be quickly put back on, making the operation simple and convenient.

[0032] Example 3: Based on Example 1, please refer to... Figure 2 - Figure 6 The ink intake port 51 is also disclosed, and its specific structure is as follows: A pen clip 41 with adjustable tightness is installed on the outside of the pen sleeve 4. The pen clip 41 is installed in the middle of the pen sleeve 4, and its front end is bent to form a closed track. A sliding clip 42 is inserted into the pen clip 41. The sliding clip 42 moves along the pen clip 41 to adjust the tightness of the pen clip 41. The ink reservoir 5 has an ink intake port 51 at the rear end. The ink intake port 51 is connected to the pen refill 1. The ink intake port 51 introduces the ink in the ink chamber 2 into the pen refill 1. The ink reservoir 5 has a cover retaining ring 52 at the front end. The ink reservoir cover 6 is sleeved on the back end of the ink reservoir 5. The cover retaining ring 52 locks the ink reservoir cover 6.

[0033] By setting an ink intake port 51 at the rear end of the ink reservoir 5, the ink can be drawn by... Figure 5As can be seen, this design ingeniously achieves the smooth flow of ink from the ink chamber 2 to the pen refill 1, ensuring a continuous supply of ink during writing or drawing. The size and shape of the ink intake port 51 are carefully designed to ensure that the ink flows into the pen refill 1 quickly and stably, while preventing ink leakage. The tight fit between the cap ring 52 and the rear end of the ink reservoir cap 6 allows the ink reservoir cap 6 to be firmly installed on the ink reservoir 5, effectively preventing ink evaporation and the entry of external impurities, ensuring the purity of the ink and the performance of the marker. The design of the sliding clip 42 on the pen clip 41 further reflects the user-friendliness of the product. Users can move the sliding clip 42 to a suitable position according to actual needs, thereby adjusting the tightness of the pen clip 41. Whether clipped to thinner paper or thicker clothing pockets, it can ensure that the marker is secure and does not fall off.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-capacity acrylic double-ended marker with replaceable refills, comprising a refill (1), an ink chamber (2), a pen barrel (3), and a pen cap (4), characterized in that: The pen barrel (3) is a hollow structure and a double-ended structure. The pen barrel (3) is a connecting rod connecting two pen tips. The pen barrel (3) has an ink chamber (2) threaded onto its end. The front end of the ink chamber (2) is fitted with an ink reservoir cap (6). The rear end of the pen refill (1) is inserted into the ink reservoir (5). The front end of the ink chamber (2) is fitted with the pen refill (1) through the ink reservoir (5) and the ink reservoir cap (6). The ink reservoir (5) has a locking block for installing the ink inlet. Inside the water chamber (2), the front end of the pen refill (1) protrudes from the front end of the ink reservoir cap (6), and the rear end of the ink reservoir cap (6) is inserted into the ink chamber (2) to seal the ink chamber (2). Ink flows from the ink reservoir (5) into the pen refill (1). The pen sleeve (4) is fitted onto the front end of the ink chamber (2) to house the pen refill (1). Inside the pen sleeve (4) is a core sleeve (7) that completely covers the pen refill (1) to prevent the ink from drying out.

2. The high-capacity acrylic double-ended marker with replaceable refills according to claim 1, characterized in that: The pen refill (1) is a replaceable double-ended pen refill (1). The overall structure is thin at both ends and thick in the middle. The 1mm thick part in the middle of the pen refill (1) is the ink-absorbing core (11), which can absorb more ink. The front end of the pen refill (1) is thin and the ink comes out quickly. When paired with the ink-absorbing core (11), the color will not fade.

3. The high-capacity acrylic double-ended marker with replaceable refills according to claim 1, characterized in that: The ink chamber (2) has a transparent observation window (21) on its wall, and the observation window (21) has a capacity scale (22) to accurately determine the internal ink content.

4. A high-capacity acrylic double-ended marker with replaceable refills according to claim 1, characterized in that: The lower end of the ink chamber (2) is provided with a connecting thread (23) and a pen sleeve retainer (24). The connecting thread (23) is connected to the internal thread at the end of the pen barrel (3), and the pen sleeve retainer (24) is connected to the pen sleeve (4). The pen sleeve retainer (24) is inserted into the inner wall of the pen sleeve (4) so ​​that it is tightly fitted to the front end of the ink chamber (2).

5. A high-capacity acrylic double-ended marker with replaceable refills according to claim 1, characterized in that: The pen sleeve (4) is fitted with an adjustable pen clip (41) on the outside. The pen clip (41) is installed in the middle of the pen sleeve (4) and its front end is bent to form a closed track.

6. A high-capacity acrylic double-ended marker with replaceable refills according to claim 5, characterized in that: A sliding clamp (42) is inserted into the pen clip (41), and the sliding clamp (42) moves along the pen clip (41) to adjust the tightness of the pen clip (41).

7. A high-capacity acrylic double-ended marker with replaceable refills according to claim 1, characterized in that: The ink reservoir (5) has an ink inlet (51) at its rear end, which is connected to the pen refill (1). The ink inlet (51) introduces the ink from the ink chamber (2) into the pen refill (1). The ink reservoir (5) has a cover ring (52) at its front end, and the ink reservoir cover (6) is fitted onto the ink reservoir (5) at its rear end. The cover ring (52) secures the ink reservoir cover (6).

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