A refillable large capacity ink cartridge for a ballpoint pen

Abstract

The utility model provides a replaceable neutral pen of large capacity ink sac, include: neutral pen main part, the inside of neutral pen main part is provided with the connecting mechanism for fixed installation ink sac, the left end of neutral pen is provided with the protection subassembly, compared with prior art, the utility model has the beneficial effect as follows: through setting connecting mechanism, utilize the ball to ink sac position limit, user need not to replace whole pen can through the dismouting ink sac continuation use, further reduce long -term writing cost and avoid the waste of resources, and can replace the ink sac of large capacity through connecting mechanism, make writing endurance capacity improve significantly, reduce the trouble of frequently replacing ink sac, through setting protection subassembly, utilize the protection cap can effectively prevent the pen point dry and ink volatilization, prolong the life, avoid the pen point stains dust or be damaged by external force simultaneously, ensure that writing is fluent.

Description

Technical Field

[0001] This utility model belongs to the field of ballpoint pens, and specifically relates to a ballpoint pen with replaceable large-capacity ink cartridges. Background Technology

[0002] A gel pen is a writing instrument that uses neutral ink. Its ink properties fall between those of water-based and oil-based pens, exhibiting lower viscosity and higher fluidity, allowing for smooth writing on paper and quick drying. The pen tip is typically made of tungsten carbide or stainless steel, offering high wear resistance and suitability for extended writing sessions. The ink consists of pigments or dyes, solvents, and lubricants, ensuring vibrant colors and minimal smudging. Gel pens are widely used in daily study, office work, and drawing due to their smooth writing and ease of use. However, gel pens without replaceable high-capacity ink cartridges have several significant drawbacks, primarily stemming from design limitations. First, these pens have a small ink capacity and short lifespan, requiring frequent refills or replacements, increasing costs, especially for heavy writers, making them uneconomical. Second, the non-replaceable cartridge design necessitates discarding the entire pen or replacing the cartridge when the ink runs out, resulting in resource waste. Therefore, we aim to design a gel pen with replaceable high-capacity ink cartridges to address this issue. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a ballpoint pen that can replace large-capacity ink cartridges, thereby solving the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a ballpoint pen with replaceable large-capacity ink cartridges, comprising: a ballpoint pen body, wherein the ballpoint pen body is provided with a connecting mechanism for fixing and installing ink cartridges, and a protective component is provided at the left end of the ballpoint pen;

[0005] The connecting mechanism includes a connecting seat, which is fixedly connected to the inner left end of the ballpoint pen body. The connecting seat has a fitting groove, and a ball bearing is movably fitted inside the fitting groove. An ink cartridge is slidably fitted inside the connecting seat. The ball bearing limits the position of the ink cartridge. The ballpoint pen can replace a large-capacity ink cartridge through the connecting mechanism, which takes into account both economy and environmental protection. Users can continue to use the pen by disassembling and assembling the ink cartridge without replacing the entire pen, which significantly reduces long-term writing costs.

[0006] In a preferred embodiment, the left side surface of the ink cartridge is fitted to the bottom of the connector by an O-ring.

[0007] As a preferred embodiment, the front cross-section of the fitting groove is an arc-shaped structure that is narrower near the center end of the ballpoint pen body, which is used to prevent the ball from falling into the interior of the connector when the ink cartridge is replaced.

[0008] In a preferred embodiment, the connecting mechanism further includes a limiting collar, which is slidably sleeved on the outside of the connecting seat. The limiting collar is elastically connected to the body of the ballpoint pen by a spring, and a slider is fixedly connected to the outside of the limiting collar.

[0009] In a preferred embodiment, the inner side of the limiting collar is provided with an arc-shaped annular groove for providing space for ball displacement.

[0010] In a preferred embodiment, a groove is provided on the outer side of the ballpoint pen body, and the inner surface of the groove is slidably engaged with the slider.

[0011] In a preferred embodiment, the protective component includes a protective cap with an inner fitting groove. A limiting protrusion is fixedly connected to the outer left end of the ballpoint pen body. The protective cap is movably fitted onto the left end of the ballpoint pen body. The fitting groove on the inner side of the protective cap is movably fitted with the limiting protrusion. By setting the protective component, the protective cap can effectively prevent the pen tip from drying out and the ink from evaporating, thus extending the service life. At the same time, it can prevent the pen tip from getting dusty or being damaged by external forces, ensuring smooth writing.

[0012] In a preferred embodiment, the bottom of the protective cap is fixedly connected to a support base, and the inside of the support base is provided with a sealing gasket to prevent the ink on the pen tip from drying out.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] 1. By setting up a connecting mechanism and using a ball bearing to limit the ink cartridge, users can continue to use the pen by removing and installing ink cartridges without replacing the entire pen, thereby reducing long-term writing costs and avoiding resource waste. Furthermore, the connecting mechanism can be used to replace large-capacity ink cartridges, significantly improving writing endurance and reducing the hassle of frequently replacing ink cartridges.

[0015] 2. By incorporating protective components, the protective cap effectively prevents the pen tip from drying out and ink from evaporating, extending its lifespan. It also prevents the pen tip from getting dusty or being damaged by external forces, ensuring smooth writing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 1This is a three-dimensional view of the overall structure of a ballpoint pen with a replaceable large-capacity ink cartridge according to the present invention.

[0018] Figure 2 This is a partial exploded view of the structure of a ballpoint pen with a replaceable large-capacity ink cartridge according to the present invention.

[0019] Figure 3 This is a cross-sectional view of the connector of a ballpoint pen with a replaceable large-capacity ink cartridge according to the present invention.

[0020] Figure 4 This is a perspective view of a protective cap for a ballpoint pen with a replaceable large-capacity ink cartridge, according to the present invention.

[0021] Figure 5 This is a front oblique view of the overall structure of a ballpoint pen with replaceable large-capacity ink cartridges according to the present invention.

[0022] In the diagram, 1-pen body, 2-connecting mechanism, 3-protective components, 4-ink cartridge;

[0023] 11-Limiting convex ball, 12-Sliding groove;

[0024] 21-Connecting seat, 211-O-ring seal, 22-Matching groove, 23-Ball, 24-Limiting collar, 241-Arc-shaped ring groove, 25-Spring, 26-Slider;

[0025] 31-Protective cap, 32-Matching ring groove, 33-Support base, 34-Sealing gasket;

[0026] 41-Groove. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1 to 3 As the first embodiment of this utility model:

[0029] A ballpoint pen with replaceable high-capacity ink cartridges includes: a ballpoint pen body 1, a connecting mechanism 2 for fixing and installing ink cartridges 4 inside the ballpoint pen body 1, and a protective component 3 at the left end of the ballpoint pen.

[0030] The connecting mechanism 2 includes a connecting seat 21, which is fixedly connected to the inner left end of the body of the ballpoint pen 1. The connecting seat 21 has a fitting groove 22, and a ball bearing 23 is movably fitted inside the fitting groove 22. An ink cartridge 4 is slidably fitted inside the connecting seat 21. By setting the connecting mechanism 2, the ball bearing 23 is used to limit the position of the ink cartridge 4. The ballpoint pen with a large-capacity ink cartridge 4 can be replaced by the connecting mechanism 2, which takes into account both economy and environmental protection. Users can continue to use the pen by disassembling and assembling the ink cartridge 4 without replacing the entire pen, which significantly reduces the long-term writing cost.

[0031] The left side surface of the ink sac 4 is fitted to the bottom of the connector 21 by an O-ring 211.

[0032] The front cross-section of the fitting groove 22 is an arc-shaped structure that is narrower near the center end of the ballpoint pen body 1, which is used to prevent the ball bearing 23 from falling into the interior of the connector 21 when the ink cartridge 4 is replaced.

[0033] The connecting mechanism 2 also includes a limiting collar 24, which is slidably sleeved on the outside of the connecting seat 21. The limiting collar 24 is elastically connected to the body of the ballpoint pen 1 through a spring 25, and a slider 26 is fixedly connected to the outside of the limiting collar 24.

[0034] The inner side of the limiting collar 24 is provided with an arc-shaped annular groove 241 for providing displacement space for the ball 23.

[0035] A groove 12 is provided on the outer side of the body 1 of the ballpoint pen, and the inner surface of the groove 12 is slidably engaged with the slider 26.

[0036] Specifically, when the ink cartridge 4 needs to be replaced, first push the slider 26 to the left end of the pen body 1. During the displacement, the slider 26 simultaneously drives the limiting collar 24 to move. During the displacement, the limiting collar 24 compresses the spring 25 to deform it. Then, the ink cartridge 4 is pulled out from the tail end of the pen body 1. During the displacement, the ink cartridge 4 compresses the ball bearing 23 and makes it fit into the arc-shaped groove 241 of the limiting collar 24. At the same time, the groove 41 on the outside of the ink cartridge 4 loses the limiting of the ball bearing 23, making it easier to remove the ink cartridge 4 to replace it with a large-capacity ink cartridge 4. The large-capacity ink cartridge 4 can be designed according to the internal volume of the pen body 1. During the design, the left end of the ink cartridge 4 still maintains the size that matches the internal diameter of the connecting seat 21 to reduce the frequency of ink cartridge 4 replacement.

[0037] Please see Figure 1 , Figure 4 as well as Figure 5 As a second embodiment of this utility model:

[0038] The protective component 3 includes a protective cap 31. The inner side of the protective cap 31 has a fitting annular groove 32. The outer side of the left end of the ballpoint pen body 1 is fixedly connected to a limiting protrusion ball 11. The protective cap 31 is movably sleeved on the left end of the ballpoint pen body 1. The fitting annular groove 32 on the inner side of the protective cap 31 is movably fitted with the limiting protrusion ball 11. By setting the protective component 3, the protective cap 31 can effectively prevent the pen tip from drying out and the ink from evaporating, thus extending the service life. At the same time, it can prevent the pen tip from getting dusty or being damaged by external force, ensuring smooth writing.

[0039] The bottom of the protective cap 31 is fixedly connected to a support base 33, and the inside of the support base 33 is provided with a sealing gasket 34 to prevent the ink on the pen tip from drying out.

[0040] Based on the above embodiments, when the body of the ballpoint pen 1 is not in use, by fitting the protective cap 31 onto the tip of the ballpoint pen body 1, and with the tip in contact with the sealing gasket 34 at the bottom of the protective cap 31, the ink at the tip is prevented from drying out and evaporating, thus extending the service life. At the same time, the tip is prevented from getting dusty or being damaged by external forces, ensuring smooth writing.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ballpoint pen with a replaceable high-capacity ink cartridge, comprising: A ballpoint pen body (1) is characterized in that a connecting mechanism (2) for fixing and installing an ink cartridge (4) is provided inside the ballpoint pen body (1), and a protective component (3) is provided at the left end of the ballpoint pen. The connecting mechanism (2) includes a connecting seat (21), which is fixedly connected to the inner left end of the ballpoint pen body (1). The connecting seat (21) has a fitting groove (22), and a ball bearing (23) is movably fitted inside the fitting groove (22). An ink sac (4) is slidably sleeved inside the connecting seat (21).

2. A ballpoint pen with a replaceable high-capacity ink cartridge as described in claim 1, characterized in that: The left side surface of the ink sac (4) is fitted to the bottom of the connector (21) by an O-ring (211).

3. A ballpoint pen with a replaceable high-capacity ink cartridge as described in claim 1, characterized in that: The front cross-section of the fitting groove (22) is an arc-shaped structure that is narrower near the center end of the ballpoint pen body (1) to prevent the ball (23) from falling into the interior of the connector (21) when the ink cartridge (4) is replaced.

4. A ballpoint pen with a replaceable high-capacity ink cartridge as described in claim 1, characterized in that: The connecting mechanism (2) further includes a limiting collar (24), which is slidably sleeved on the outside of the connecting seat (21). The limiting collar (24) is elastically connected to the body of the ballpoint pen (1) by a spring (25). A slider (26) is fixedly connected to the outside of the limiting collar (24).

5. A ballpoint pen with a replaceable high-capacity ink cartridge as described in claim 4, characterized in that: The inner side of the limiting collar (24) is provided with an arc-shaped annular groove (241) for providing displacement space for the ball (23).

6. A ballpoint pen with a replaceable high-capacity ink cartridge as described in claim 4, characterized in that: The outer side of the ballpoint pen body (1) is provided with a groove (12), and the inner surface of the groove (12) is slidably engaged with the slider (26).

7. A ballpoint pen with a replaceable high-capacity ink cartridge as described in claim 1, characterized in that: The protective component (3) includes a protective cap (31), and the inner side of the protective cap (31) is provided with a fitting annular groove (32). A limiting protrusion ball (11) is fixedly connected to the outer side of the left end of the ballpoint pen body (1). The protective cap (31) is movably sleeved on the left end of the ballpoint pen body (1), and the fitting annular groove (32) on the inner side of the protective cap (31) is movably fitted with the limiting protrusion ball (11).

8. A ballpoint pen with a replaceable high-capacity ink cartridge as described in claim 7, characterized in that: The bottom of the protective cap (31) is fixedly connected to a support base (33), and the inside of the support base (33) is provided with a sealing gasket (34) to prevent the ink on the pen tip from drying out.

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