Groove-shaped roll-packed core ink storage type bottle body structure and ink storage pen

Abstract

The utility model discloses a groove-shaped roll core ink storage type bottle body structure and an ink storage pen, the groove-shaped roll core ink storage type bottle body structure comprises a bottle body and a groove-shaped clamping structure, one end of the bottle body is provided with a bottle opening, a containing cavity is formed in the bottle body, one end, opposite to the bottle opening, in the bottle body is provided with an air channel, and the bottle opening, the containing cavity and the air channel are sequentially communicated; the groove-shaped clamping structure is located in the containing cavity, the groove-shaped clamping structure is arranged on the inner side wall of the bottle body in a protruding mode, the groove-shaped clamping structure divides the end, close to the air channel, of the containing cavity into at least one limiting space, and each limiting space is communicated with the bottle opening. The ink tube is limited by adopting the groove-shaped clamping structure, so that the ink tube can be fixed without forming a reinforcing rib in the bottle body, and the ink tube is effectively prevented from shaking. Moreover, when the ink tube is clamped in the limiting space, the end, extending into the bottle body, of the ink tube is exposed in the air channel, so that air at the two opposite ends of the ink tube can flow back, and the situation that ink cannot be discharged due to negative pressure in the ink tube is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of stationery, in particular to a groove-shaped rolled core ink storage bottle structure and an ink storage pen. Background Art

[0002] Highlighters, watercolor pens, whiteboard markers, and permanent markers are all common stationery items with coiled core ink storage. Traditional ink storage pens typically include a pen bottle, a pen cap, and an end cap. The pen bottle end cap is connected to one end of the pen bottle. The end cap and pen bottle are connected to form an inner cavity, which houses an ink tube. The inner wall of the pen shaft is formed with multiple reinforcing ribs, and the ink tube is clamped between the ribs to maintain the ink tube relative to the pen shaft. The end cap is also provided with a pen tip. One end of the pen tip protrudes from the end of the pen bottle and can be used for writing. The other end is inserted into the ink tube, allowing ink to enter the pen tip. The pen cap is mounted on the end cap.

[0003] Existing pen bottles are generally made using injection molding, a process that uses a lot of materials, is expensive, and has a limited number of styles. Furthermore, due to the tapered design of the pen bottles, injection molding is prone to problems such as mold release deformation, uneven and rough surfaces, and inward dents in the finished product. To address these issues, blow molding has emerged. However, since blow molding is an integrated molding process, it is impossible to form reinforcing ribs on the inner wall of the pen bottle, making it difficult to maintain the ink tube in place within the pen bottle, causing it to wobble within the bottle. While directly contacting the ink tube with the bottom of the pen bottle prevents it from wobbling, this method of fixing the ink tube securely within the pen bottle prevents it from wobbling. However, since this method seals the ends of the ink tube against the bottom of the pen bottle, it prevents airflow from flowing between the two ends of the ink tube, affecting the ink flow of the ink reservoir pen. Utility Model Content

[0004] Aiming at the deficiencies of the prior art, the invention provides a roll-core ink storage type ink storage pen bottle and an ink storage pen.

[0005] To achieve the above-mentioned purpose, the utility model provides a roll-wrapped core ink storage pen bottle body, including a bottle body and a groove-shaped clamping structure, a bottle mouth is provided at one end of the bottle body, a accommodating cavity is formed inside the bottle body, an air channel is provided at the end of the bottle body opposite to the bottle mouth, and the bottle mouth, the accommodating cavity and the air channel are connected in sequence; the groove-shaped clamping structure is located in the accommodating cavity, and the groove-shaped clamping structure is protruded from the inner side wall of the bottle body, and the groove-shaped clamping structure separates the end of the accommodating cavity close to the air channel into at least one limited space, and each limited space is connected to the bottle mouth.

[0006] According to one embodiment of the present invention, the groove-shaped clamping structure includes two groove clamping parts, which are arranged on the opposite inner sides of the bottle body. Each groove clamping part protrudes into the accommodating cavity, and a limiting space is formed on both sides of the two groove clamping parts.

[0007] According to one embodiment of the present invention, the bottle body includes a connecting portion and a accommodating portion, the connecting portion includes a first connecting structure and a second connecting structure, one end of the first connecting structure is connected to the accommodating portion, and the other end thereof is connected to the second connecting structure; the bottle mouth is located at an end of the second connecting structure away from the first connecting structure; the connecting portion is connected to the accommodating portion to form a accommodating cavity.

[0008] According to one embodiment of the present invention, the accommodating portion includes a first accommodating unit and a second accommodating unit, one end of the first accommodating unit is connected to the first connecting structure, and the other end of the first accommodating unit is connected to the second accommodating unit; the first connecting structure, the second connecting structure, the first accommodating unit and the second accommodating unit are internally connected to each other to form an accommodating cavity; the groove-shaped snap-fit ​​structure is protruding from one end of the first accommodating unit close to the second accommodating unit; the airway is located in the second accommodating unit, and a boss is formed between the first accommodating unit and the second accommodating unit.

[0009] According to one embodiment of the present invention, a threaded structure is provided on the outer wall of the second connecting structure.

[0010] According to one embodiment of the present invention, the outer diameter of the first connecting structure gradually decreases in a direction gradually approaching the second connecting structure, so as to form a guide surface on the outer wall of the first connecting structure.

[0011] According to one embodiment of the present invention, the connecting portion and the accommodating portion are integrally formed.

[0012] The utility model also provides an ink storage pen, which includes an ink tube, an end cap and a pen core. The ink tube is located in the accommodating cavity, and one end of the ink tube is clamped in one of the limit spaces; the end cap is connected to the bottle body, and the end cap covers the bottle mouth, one end of the pen core is passed through the end cap and connected to the ink tube; the other end of the pen core is exposed from the end cap, and there is an air gap between the pen core and the end cap, and the air gap is connected to the air channel.

[0013] According to another embodiment of the present invention, the end cap includes a main body and multiple clamping ribs, the multiple clamping ribs are arranged at intervals along the inner wall of the main body, the pen core passes through the main body, the multiple clamping ribs are located between the main body and the pen core, and the side wall of the pen core abuts against the multiple clamping ribs.

[0014] According to another embodiment of the present invention, the pen further comprises a pen cap, which covers the pen core and the end cap.

[0015] The beneficial effect of the present invention lies in that, by forming a groove-shaped snap-fit ​​structure within the bottle body, the groove-shaped snap-fit ​​structure separates the end of the accommodating chamber near the airway into at least one limited space, and the limited space is connected to the bottle mouth. During use, one end of the ink tube extends into any limited space, so that the ink tube of the ink storage pen remains fixed relative to the bottle body, preventing the ink tube of the ink storage pen from shaking inside the bottle body. In this way, by using the groove-shaped snap-fit ​​structure to limit the ink tube, it is possible to fix the ink tube without forming reinforcing ribs within the bottle body, effectively preventing the ink tube from shaking. Furthermore, when the ink tube is snapped into the limited space, the end of the ink tube extending into the bottle body is exposed to the airway, allowing the gas at the opposite ends of the ink tube to flow back, preventing the negative pressure within the ink tube from causing ink to be unable to be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A perspective view of the groove-shaped rolled core ink storage bottle structure of Example 1;

[0018] Figure 2 2. It is a cross-sectional view of the groove-shaped rolled core ink storage bottle structure of the first embodiment;

[0019] Figure 3 Another cross-sectional view of the groove-shaped rolled core ink storage bottle structure of the first embodiment;

[0020] Figure 4 Schematic diagram of the connection between the groove-shaped rolled core ink storage bottle structure and the ink tube in Example 1;

[0021] Figure 5 A cross-sectional view of the groove-shaped rolled core ink storage bottle structure in Example 2;

[0022] Figure 6 Another cross-sectional view of the groove-shaped rolled core ink storage bottle structure in Example 2;

[0023] Figure 7 A cross-sectional view of the groove-shaped rolled core ink storage bottle structure in Example 3;

[0024] Figure 8 Another cross-sectional view of the groove-shaped rolled core ink storage bottle structure in Example 3;

[0025] Figure 9 An exploded view of the ink storage pen in Example 4;

[0026] Figure 10 is a three-dimensional diagram of the end cap in Example 4;

[0027] Figure 11 Schematic diagram of the connection between the end cap and the pen core in Example 4.

[0028] Description of Reference Numerals

[0029] 1-bottle body; 10-bottle mouth; 11-accommodating chamber; 12-connecting part; 121-first connecting structure; 1210-guide surface; 122-second connecting structure; 13-accommodating part; 131-first accommodating unit; 1310-first inclined surface; 1311-second inclined surface; 132-second accommodating unit; 133-boss; 2-groove-shaped clamping structure; 20-limiting space; 21-groove clamping part; 3-air channel; 4-ink tube; 5-end cap; 6-pen core; 100-air gap. DETAILED DESCRIPTION

[0030] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0031] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Please refer to Figures 1-4 , Figure 1 This is a three-dimensional diagram of the groove-shaped rolled core ink storage bottle structure. Figure 2 This is a cross-sectional view of the grooved core-wound ink storage bottle structure. Figure 3 This is another cross-sectional view of the grooved core-wound ink storage bottle structure. Figure 4The figure shows the connection between a grooved, wound-core ink bottle structure and an ink tube. This embodiment provides a grooved, wound-core ink bottle structure, comprising a bottle body 1 and a grooved, snap-fitting structure 2. The bottle body 1 has a mouth 10 and a receiving chamber 11 formed within it, with the mouth 10 communicating with the receiving chamber 11. An air passage 3 is provided at the end of the bottle body 1 opposite the mouth 10, interconnecting the mouth 10, the receiving chamber 11, and the air passage 3. The grooved, snap-fitting structure 2 is located within the receiving chamber 11 and is connected to the inner wall of the bottle body 1. The grooved, snap-fitting structure 2 is convexly arranged along the inner diameter of the bottle body 1, thereby reducing the inner diameter of the bottle body 1. The grooved, snap-fitting structure 2 is disposed within the bottle body 1 and separates the receiving chamber 11 from the end of the air passage 3, creating at least one restricted space 20. Each restricted space 20 is connected to the mouth 10. The restricted spaces 20 are used to restrict the position of the ink tube 4 of the ink reservoir pen. During installation, when the ink tube 4 of the ink reservoir pen extends into the bottle body 1, it is blocked by the groove-shaped snap-fit ​​structure 2, which restricts it from extending into any of the restricted spaces 20. It should be noted that the restricted space 20 is formed by the space between the groove-shaped snap-fit ​​structure 2 and the inner wall of the bottle body 1. When the end of the ink tube 4 is within the restricted space, the recessed snap-fit ​​structure 2 and the sidewall of the bottle body 1 constrain the ink tube 4, keeping it fixed relative to the bottle body 1 and preventing it from dangling within the bottle body 1. Thus, by using the groove-shaped snap-fit ​​structure 2 to constrain the ink tube 4, the end of the ink tube 4 extending into the bottle body 1 is fixed in the restricted space 20. This eliminates the need for reinforcing ribs within the bottle body 1, thereby preventing the ink tube 4 from dangling within the bottle body 1. Furthermore, when the ink tube 4 is engaged in the limiting space 20 , the end of the ink tube 4 extending into the bottle body 1 is exposed to the air channel 3 , allowing gas at opposite ends of the ink tube 4 to flow back, thereby preventing the negative pressure in the ink tube 4 from preventing ink from being discharged.

[0033] It should be noted that the groove-shaped rolled core ink storage bottle structure in this embodiment can be applied to ink storage pens such as fluorescent pens, watercolor pens, whiteboard pens, and markers, and has the same beneficial effects.

[0034] Furthermore, the groove-shaped engaging structure 2 includes two groove engaging portions 21, which are disposed on opposite inner sides of the bottle body 1. Each groove engaging portion 21 protrudes into the accommodating cavity 11, such that the two groove engaging portions 21 are disposed opposite each other. A limiting space 20 is formed on either side of each groove engaging portion 21.

[0035] Two recessed engaging portions 21 are formed inside the bottle body 1 to restrict the position of the ink tube 4 within the bottle body 1. Because each recessed engaging portion 21 extends inward from the inner wall of the bottle body 1, the distance between the two recessed engaging portions 21 is reduced. Consequently, the ink tube 4 cannot pass between the two recessed engaging portions 21. Consequently, the end of the ink tube 4 extending into the bottle body 1 can only extend into the restricted space 20 on either side of the recessed engaging structure 2, thereby effectively restricting the ink tube 4.

[0036] In this embodiment, the groove-shaped engaging structure 2 is integrally formed with the bottle body 1. Each groove engaging portion 21 is formed by an inwardly projecting projection from the sidewall of the bottle body 1, creating a concave portion on the outer surface of the bottle body 1. This effectively reduces manufacturing material costs, thereby achieving a cost-effective solution. Furthermore, in this embodiment, the groove engaging portion 21 is hemispherical. Due to the curved surface of the hemispherical shape, when the ink tube 4 is inserted into the bottle body 1, one end of the ink tube 4 contacts the groove engaging portion 21. The curved surface of the groove engaging portion 21 guides the ink tube 4 into the confining space 20 on one side.

[0037] The bottle body 1 includes a connecting portion 12 and a receiving portion 13. The connecting portion 12 comprises a first connecting structure 121 and a second connecting structure 122. One end of the first connecting structure 121 is connected to the receiving portion 13, and the other end is connected to the second connecting structure 122. The bottle mouth 10 is located at the end of the second connecting structure 122 that is away from the first connecting structure 121. The connecting portion 12 and the receiving portion 13 are interconnected, and their internal connection forms a receiving cavity 11.

[0038] In this example, the connecting portion 12 is integrally formed with the accommodating portion 13. Preferably, the connecting portion 12 is integrally formed with the bottle body 1 by a blow molding process.

[0039] In one embodiment, the accommodating portion 13 includes a first accommodating unit 131 and a second accommodating unit 132. One end of the first accommodating unit 131 is connected to the first connecting structure 121, and the other end of the first accommodating unit 131 is connected to the second accommodating unit 132. The interiors of the first connecting structure 121, the second connecting structure 122, the first accommodating unit 131, and the second accommodating unit 132 are interconnected to form the accommodating cavity 11. A groove-shaped snap-fit ​​structure 2 is protruding from one end of the first accommodating unit 131 near the second accommodating unit 132. The air duct 3 is located within the second accommodating unit 132, such that the air duct 3 is located below the groove-shaped snap-fit ​​structure 2. A boss 133 is formed between the first accommodating unit 131 and the second accommodating unit 132. During installation, the ends of the ink tube 4 extend into the restricted spaces 20 on either side of the groove-shaped snap-fit ​​structure 2. Because the restricted spaces 20 communicate with the air passage 10 within the second accommodating unit 132, and the air passage 3 is located at the bottom of the restricted spaces 20, when the ink tube 4 is within the restricted spaces 20, the interior of the ink tube 4 communicates with the air passage 3, preventing air from being blocked from flowing through the ink tube 4. The ends of the ink tube 4 pass through the air passage and abut against the boss 133, preventing the ink tube 4 from abutting against the bottom of the bottle body 1.

[0040] Furthermore, the outer wall of the second connection structure 122 is provided with a thread structure.

[0041] The outer diameter of the first connecting structure 121 gradually decreases as it approaches the second connecting structure 122, forming an inclined guide surface 1210 on the surface of the first connecting structure 121. When the pen cap is connected to the bottle body 1, the pen cap is engaged with the first connecting structure 121 along the guide surface 1210.

[0042] In one embodiment, the outer surface of the bottle body 1 is provided with an anti-slip structure (not shown) to increase friction on the surface of the bottle body 1, preventing the blow-molded pen bottle from slipping out of the hand during use. It should be noted that the anti-slip structure is a pattern or design with a concave-convex structure. This increases friction on the surface of the bottle body 1 while also enhancing its aesthetics.

[0043] Example 2

[0044] Please refer to Figure 5 and Figure 6 , Figure 5 This is a cross-sectional view of the groove-shaped rolled core ink storage bottle structure in this embodiment. Figure 6This is another cross-sectional view of the grooved core-wound ink bottle structure of this embodiment. The grooved core-wound ink bottle structure of this embodiment differs from that of the first embodiment in that the accommodating portion 13 of this embodiment includes a first accommodating unit 131. Two first inclined surfaces 1310 are provided on the end of the first accommodating unit 131 away from the first connecting structure 121. These first inclined surfaces 1310 are located on opposite sides of the accommodating portion 13 and are inclined inwardly of the bottle body 1, away from the second connecting structure 122. This reduces the space between the end of the first accommodating unit 131 and the second connecting structure 122. The air duct 3 and the grooved clamping structure 2 are both located at the end of the first accommodating unit 131 away from the first connecting structure 121. The grooved clamping structure 2 includes two grooved clamping portions 21, which are protruding from the inner walls of the first accommodating unit 131 on opposite sides and have an irregular shape. Each grooved engaging portion 21 is located within one side of the first inclined surface 1310, and the grooved engaging portion 21 is integrally formed with the first inclined surface 1310. The two grooved engaging portions 21 separate the accommodating cavity 11 of the first accommodating unit 131 near the end of the airway 3 into two limited spaces 20. The two limited spaces 20 are respectively connected to the airway 3 and the bottle mouth 10.

[0045] Example 3

[0046] Please refer to Figure 7 and Figure 8 , Figure 7 This is a cross-sectional view of the groove-shaped rolled core ink storage bottle structure in this embodiment. Figure 8 This is another cross-sectional view of the groove-shaped rolled core ink storage bottle structure in this embodiment. The difference between this embodiment and the second embodiment is that the accommodating portion of the groove-shaped rolled core ink storage bottle structure in this embodiment includes a first accommodating unit 131. The two side edges of the first accommodating unit 131 gradually extend outward in a direction away from the second connecting structure 122. The end of the first accommodating unit 131 away from the connecting portion 12 has two second inclined surfaces 1311. Two groove clamping portions 21 are protruding from the inner walls on opposite sides of the first accommodating unit 131, and the groove clamping portion 21 is irregularly egg-shaped. The groove clamping portion 21 is located in the second inclined surface 1311, and a portion of the edge of each groove portion 21 is connected to the edge of the second inclined surface 1311. The groove clamping portion 21 and the second inclined surface 1311 are integrally formed.

[0047] Example 4

[0048] Please refer to Figure 4 and Figure 9 , Figure 9The figure is an exploded view of an ink storage pen. This embodiment provides an ink storage pen comprising the groove-shaped, wound-core ink storage bottle structure of the first embodiment, as well as an ink tube 4, an end cap 5, and a refill 6. Either end of the ink tube 4 extends into the bottle body 1 through the bottle opening 10, positioning the ink tube 4 within the accommodating cavity 11. Furthermore, the end of the ink tube 4 extending into the bottle body 1 is positioned within the confined space 20 on either side of the groove-shaped snap-fit ​​structure 2. The end cap 5 is threadedly connected to the second connecting structure 122, securing the end cap 5 to the bottle body 1. One end of the refill 6 passes through the end cap 5 and connects to the ink tube 4. The other end of the refill 6 is exposed outside the end cap 5, facilitating writing with the ink storage pen. An air gap 100 is defined between the refill 6 and the end cap 5, and the air gap 100 is connected to the air passage 3 within the bottle body 1. The provision of the air gap 100 ensures that the air pressure inside the bottle body 1 is consistent with the air pressure outside the bottle body 1, ensuring smooth ink flow from the ink storage pen. It should be noted that the ink storage pen in this embodiment can be an ink storage pen with a rolled core ink tube, such as a fluorescent pen, a watercolor pen, a whiteboard pen, a marker, etc., and is not specifically limited here.

[0049] Please refer to Figure 10 and Figure 11 , Figure 10 is a three-dimensional diagram of the end cap, Figure 11 The figure is a schematic diagram of the connection between the end cap and the refill. Furthermore, the end cap 5 includes a body 50 and a plurality of clamping ribs 51, which are arranged at intervals along the inner wall of the body 50. The refill 6 is inserted into the end cap 5, and the outer wall of the refill 6 abuts against the plurality of clamping ribs 51, so that the refill 6 remains stable relative to the end cap 5. In this example, the clamping ribs 51 are protruding inward along the inner wall of the end cap 5, and the axes of the clamping ribs 51 and the refill 6 are parallel to each other. An air gap 100 is formed between each pair of clamping ribs 51, and the air gap 100 is connected to the interior of the bottle body 1.

[0050] During use, as the ink in the ink tube 4 decreases, negative pressure forms in the accommodating chamber 11. Without a passage connecting the accommodating chamber 11 to the outside atmosphere, the internal pressure of the accommodating chamber 11 would be equal to the external atmospheric pressure. This negative pressure would result in poor ink flow and ink interruption during writing. By creating an air gap between the refill and the end cap, the internal pressure of the bottle 1 is equal to the external pressure during use, ensuring smooth ink flow.

[0051] Furthermore, the ink storage pen further includes a cap 7, which covers the refill 6 and the end cap 5 and is engaged with the second connecting structure 122. The cap 7 keeps the refill 6 moist when the ink storage pen is not in use, preventing the ink from drying up, and also prevents the end of the refill 6 exposed at the end cap 5 from being damaged when not in use.

[0052] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. The groove-shaped rolled core ink storage bottle structure is characterized by: include: A bottle body (1) and a groove-shaped clamping structure (2), wherein a bottle mouth (10) is provided at one end of the bottle body (1), a receiving cavity (11) is formed inside the bottle body (1), an air passage (3) is provided at the end of the bottle body (1) opposite to the bottle mouth (10), and the bottle mouth (10), the receiving cavity (11) and the air passage (3) are sequentially connected; the groove-shaped clamping structure (2) is located in the receiving cavity (11), and the groove-shaped clamping structure (2) is protruding from the inner side wall of the bottle body (1), and the groove-shaped clamping structure (2) separates the receiving cavity (11) from one end close to the air passage (3) into at least one limiting space (20), and each limiting space (20) is connected to the bottle mouth (10).

2. The groove-shaped rolled core ink storage bottle structure according to claim 1, characterized in that: The groove-shaped clamping structure (2) comprises two groove clamping portions (21), the two groove clamping portions (21) being arranged on two opposite inner sides of the bottle body (1), each groove clamping portion (21) being protruded into the accommodating cavity (11), and a limiting space (20) being formed on both sides of the two groove clamping portions (21).

3. The groove-shaped rolled core ink storage bottle structure according to claim 1, characterized in that: The bottle body (1) comprises a connecting portion (12) and a accommodating portion (13); the connecting portion (12) comprises a first connecting structure (121) and a second connecting structure (122); one end of the first connecting structure (121) is connected to the accommodating portion (13), and the other end thereof is connected to the second connecting structure (122); the bottle mouth (10) is located at an end of the second connecting structure (122) away from the first connecting structure (121); the connecting portion (12) and the accommodating portion (13) are communicated with each other to form the accommodating cavity (11).

4. The groove-shaped rolled core ink storage bottle structure according to claim 3, characterized in that: The accommodating portion (13) includes a first accommodating unit (131) and a second accommodating unit (132), one end of the first accommodating unit (131) is connected to the first connecting structure (121), and the other end of the first accommodating unit (131) is connected to the second accommodating unit (132); the first connecting structure (121), the second connecting structure (122), the first accommodating unit (131) and the second accommodating unit (132) are internally interconnected to form the accommodating cavity (11); the groove-shaped snap-fitting structure (2) is protruding from one end of the first accommodating unit (131) close to the second accommodating unit (132); the air duct (3) is located in the second accommodating unit (132), and a boss (133) is formed between the first accommodating unit (131) and the second accommodating unit (132).

5. The groove-shaped rolled core ink storage bottle structure according to claim 3, characterized in that: The outer wall of the second connecting structure (122) is provided with a threaded structure.

6. The groove-shaped rolled core ink storage bottle structure according to claim 3, characterized in that: In a direction gradually approaching the second connecting structure (122), the outer diameter of the first connecting structure (121) gradually decreases, so as to form a guide surface (1210) on the outer wall of the first connecting structure (121).

7. The groove-shaped rolled core ink storage bottle structure according to claim 3, characterized in that: The connecting portion (12) and the accommodating portion (13) are integrally formed.

8. An ink storage pen, characterized in that: The invention comprises a groove-shaped rolled core ink storage bottle structure as described in any one of claims 1 to 7, and further comprises an ink tube (4), an end cap (5) and a pen core (6), wherein the ink tube (4) is located in the accommodating cavity (11), and one end of the ink tube (4) is clamped in one of the limiting spaces (20); the end cap (5) is connected to the bottle body (1), and the end cap (5) covers the bottle mouth (10), one end of the pen core (6) passes through the end cap (5) and is connected to the ink tube (4); the other end of the pen core (6) is exposed from the end cap (5), and an air gap (100) is provided between the pen core (6) and the end cap (5), and the air gap (100) is communicated with the air channel (3).

9. The ink storage pen according to claim 8, characterized in that: The end cap (5) comprises a body (50) and a plurality of clamping ribs (51), wherein the plurality of clamping ribs (51) are arranged at intervals along the inner wall of the body (50), the pen core (6) passes through the body (50), the plurality of clamping ribs (51) are located between the body (50) and the pen core (6), and the side wall of the pen core (6) abuts against the plurality of clamping ribs (51).

10. The ink storage pen according to claim 8, characterized in that: It also includes a pen cap (7), wherein the pen cap (7) covers the pen core (6) and the end cap (5).

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