Anti-slip limiting device structure for pen holder of gel pen capable of preventing cap from falling off

Abstract

The utility model relates to an anti-skidding limiting device structure for a gel pen holder capable of preventing a cap from falling off, a pen point and a pen tail are respectively arranged at two ends of the pen holder, the anti-skidding limiting device structure comprises a hollow sleeve sleeved on the pen holder and an end cap detachably connected with the hollow sleeve, and a flexible connecting belt is connected between the hollow sleeve and the end cap. A plurality of deformation gaps are evenly formed in the hollow sleeve in the circumferential direction so that clamping pieces can be formed at the end, away from the pen point, of the hollow sleeve, the clamping pieces are elastic, the inner diameter of the end, away from the pen point, of each clamping piece is not smaller than the outer diameter of the pen holder, and anti-skid bellies protruding towards the pen holder are arranged on the inner walls of the clamping pieces. The problems that in the related technology, a pen cap of a common gel pen is prone to being lost, so that a refill is lack of protection of the pen cap, the anti-cap-falling gel pen is complex in structure and high in production cost, and the applicability is not high due to one-to-one matching of the pen cap and the pen holder are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of stationery, and in particular to an anti-slip limiting device structure for a ballpoint pen barrel that prevents the cap from falling off. Background Technology

[0002] A ballpoint pen consists of a cap, a barrel, and a refill. When using the pen, the cap needs to be removed and placed on a table or upside down at the end of the barrel. Because the cap is small, it is easy to lose, leaving the refill unprotected. If the cap is lost, the ballpoint of the refill is also prone to drying out and writing becomes difficult. If the barrel is accidentally dropped, the pen tip is also easily damaged.

[0003] Chinese utility model patent CN202378487U discloses a cap-proof gel pen, which belongs to the category of writing instruments. Its structure includes a pen barrel, a pen tip, and a pen cap. The pen tip is located on the upper part of the pen barrel. The pen cap is connected to the pen barrel by a snap-fit ​​device. The snap-fit ​​device includes a slot, a connecting rod, and a moving block. The pen barrel is provided with a slot, and the pen cap is provided with a connecting rod that cooperates with the slot. The other end of the connecting rod is connected to the moving block. The connecting rod is located in the slot, and notches are provided on both sides of the pen cap.

[0004] The aforementioned anti-drop gel pen has the characteristic that both the pen cap and the pen barrel require special processing. Its structure is relatively complex and the production cost is high. Moreover, the pen cap and pen barrel are matched one by one. In actual use, users need to purchase the complete anti-drop gel pen to experience the effect of not losing the pen cap. Ordinary gel pens used by users usually do not have matching structures such as slots, resulting in the defect that the pen cap of the anti-drop gel pen cannot be used with ordinary gel pens. Utility Model Content

[0005] To address the issues in related technologies, such as the easy loss of pen caps in ordinary gel pens, resulting in a lack of protection for the pen refill, and the complex structure and high production cost of anti-drop gel pens, which have limited applicability due to the one-to-one matching of pen caps and pen barrels, this application provides an anti-slip limiting device structure for the pen barrel of an anti-drop gel pen. This improves the situation where pen caps are easily lost, prolonged absence of pen caps can lead to dry ballpoint and stiff writing, and pen tip damage when the pen barrel is accidentally dropped. It also addresses the issues of the complex structure and high production cost of anti-drop gel pens, which have limited applicability due to the one-to-one matching of pen caps and pen barrels.

[0006] This application provides a structure for an anti-slip limiting device for a ballpoint pen barrel that prevents the cap from falling off, and adopts the following technical solution:

[0007] A non-slip limiting device structure for a gel pen barrel is disclosed. The pen barrel has a pen tip and a pen tail at its two ends, and a pen refill is installed inside the pen barrel. The pen refill has a pen tip that protrudes from the pen tip. The non-slip limiting device structure includes a hollow sleeve fitted onto the pen barrel and an end cap detachably connected to the hollow sleeve. A flexible connecting strip connects the hollow sleeve and the end cap. The hollow sleeve has multiple deformation gaps evenly distributed around its circumference to form a clip at the end of the hollow sleeve away from the pen tip. The clip is elastic, and the inner diameter of the end of the clip away from the pen tip is not less than the outer diameter of the pen barrel. The inner wall of the clip has a non-slip belly protruding towards the pen barrel.

[0008] Optionally, a retaining ring is provided at the opening of the end cap, and a first annular groove is provided at one end of the hollow sleeve for the retaining ring to be inserted. When the end cap is installed on the hollow sleeve, the outer side wall of the retaining ring abuts against the side wall of the first annular groove.

[0009] Optionally, the retaining ring includes a retaining ring body and a sealing ring. The outer side wall of the retaining ring body is provided with a second annular groove, and the sealing ring is embedded in the second annular groove. The surface of the sealing ring protrudes from the second annular groove.

[0010] Optionally, the outer wall of the clip is recessed to form the anti-slip belly.

[0011] Optionally, the anti-slip pad is an elastic arc-shaped piece, one end of which is fused and fixed to the inner wall of the clip, the other end of which faces the pen tip, and the elastic arc-shaped piece protrudes towards the pen barrel.

[0012] Optionally, a protective pad is embedded at the bottom of the end cap, and the protective pad has a recessed groove for the end of the pen tip to be inserted.

[0013] Optionally, the flexible connecting strip is made of nylon material.

[0014] Optionally, the hollow sleeve is made of transparent plastic.

[0015] By adopting the above technical solution, if the cap of a user's ordinary ballpoint pen is lost, the user can put the hollow sleeve on the pen tip. The anti-slip belly protrudes from the inner wall of the hollow sleeve, which can clamp the pen barrel and make the hollow sleeve not easy to fall off. The end cap serves as a substitute for the pen cap. When the end cap is fastened to the hollow sleeve, the pen tip is located inside the end cap.

[0016] When a user needs to use the ballpoint pen, they can open the end cap and move the hollow sleeve upwards to expose the pen tip for writing. After use, the user can lower the hollow sleeve and fasten the end cap back into it. The end cap and the hollow sleeve are connected by a flexible strap to prevent the end cap from falling off.

[0017] Because the anti-slip belly is deformable and the hollow sleeve is fixed to the pen barrel by friction, there are no requirements for the structure of the pen barrel. Therefore, it is suitable for the barrels of various ballpoint pens with no specific surface structure, and its applicability is relatively strong. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of this utility model. For those skilled in the art, other embodiments and their accompanying drawings can be obtained from the embodiments shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the anti-slip limiting device structure and the pen barrel structure.

[0020] Figure 2 This is a schematic diagram of the structure where the outer wall of the clip is pressed inward to form an anti-slip belly.

[0021] Figure 3 It is a cross-sectional view of the hollow sleeve.

[0022] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0023] Figure 5 This is a schematic diagram of the structure where the end cap is not fastened to the hollow sleeve.

[0024] Figure 6 This is a schematic diagram of the structure of an elastic arc-shaped sheet forming a non-slip surface.

[0025] In the diagram: 1. Pen barrel; 2. Hollow sleeve; 3. End cap; 4. Flexible connecting strip; 5. Deformation gap; 6. Clip; 7. Anti-slip belly; 8. Snap ring; 9. First annular groove; 81. Snap ring body; 82. Sealing ring; 10. Second annular groove; 11. Elastic arc-shaped piece; 12. Protective pad; 13. Relief groove. Detailed Implementation

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

[0027] An embodiment of this utility model provides a structure for an anti-slip limiting device for a ballpoint pen barrel that prevents the cap from falling off, such as... Figures 1 to 6As shown, the two ends of the pen barrel 1 are the pen tip and the pen tail, respectively. The pen barrel 1 is equipped with a pen refill with a pen tip that protrudes from the pen tip. The anti-slip limiting device structure includes a hollow sleeve 2 fitted onto the pen barrel 1 and an end cap 3 detachably connected to the hollow sleeve 2. A flexible connecting strip 4 connects the hollow sleeve 2 and the end cap 3. The hollow sleeve 2 is evenly provided with multiple deformation gaps 5 around its circumference to form a clip 6 at the end of the hollow sleeve 2 away from the pen tip. The clip 6 is elastic, and the inner diameter of the end of the clip 6 away from the pen tip is not less than the outer diameter of the pen barrel 1. The inner wall of the clip 6 has an anti-slip belly 7 protruding towards the pen barrel 1.

[0028] Specifically, in this embodiment, four deformation gaps 5 are provided, corresponding to four clips 6. The anti-slip belly 7 is located in the middle of the clip 6, so the inner diameter of the middle of the clip 6 is smaller than the outer diameter of the pen barrel 1. The inner diameter of the hollow sleeve 2 on the side near the end cap 3 is not smaller than the outer diameter of the pen barrel 1. The inner diameter of the end of the clip 6 away from the pen tip is not smaller than the outer diameter of the pen barrel 1, which makes it convenient for the user to align the hollow sleeve 2 with the pen tip and put the hollow sleeve 2 on the pen barrel 1. During the process of putting the end of the hollow sleeve 2 away from the end cap 3 into the pen barrel 1 from the pen tip, the anti-slip belly 7 is squeezed and deformed, and the clip 6 deforms accordingly. Since the clip 6 is elastic, it causes the clip 6 to press the anti-slip belly 7 against the pen barrel 1, increasing the static friction between the anti-slip belly 7 and the pen barrel 1. When the user writes, the hollow sleeve 2 and the pen barrel 1 are less likely to slip.

[0029] Since different users have different writing habits, there may be different positions in which users hold the pen barrel 1. Users can adjust the position of the hollow sleeve 2 relative to the pen barrel 1 according to their own writing habits. The operation is simple.

[0030] In a preferred embodiment of the present invention, a retaining ring 8 is protruding from the opening of the end cap 3, and a first annular groove 9 for inserting the retaining ring 8 is provided at one end of the hollow sleeve 2. When the end cap 3 is installed on the hollow sleeve 2, the outer wall of the retaining ring 8 abuts against the side wall of the first annular groove 9.

[0031] Specifically, in this embodiment, the end cap 3 can be fixed by inserting the retaining ring 8 into the first annular groove 9, which is simple and convenient to operate.

[0032] In a preferred embodiment of the present invention, the retaining ring 8 includes a retaining ring body 81 and a sealing ring 82. A second annular groove 10 is provided on the outer side wall of the retaining ring body 81, and the sealing ring 82 is embedded in the second annular groove 10. The surface of the sealing ring 82 protrudes from the second annular groove 10.

[0033] Specifically, in this embodiment, by embedding a sealing ring 82 on the retaining ring body 81, when the end cap 3 is fastened to the hollow sleeve 2, the sealing ring 82 abuts against the inner wall of the first annular groove 9, making it difficult for the retaining ring 8 to fall off the first annular groove 9, thereby improving the fastening reliability between the end cap 3 and the hollow sleeve 2.

[0034] The end of the retaining ring body 81 facing the hollow sleeve 2 is chamfered, which serves as a guide when the user inserts the retaining ring 8 into the first ring groove 9.

[0035] In a preferred embodiment of this invention, the outer wall of the clip 6 is recessed to form an anti-slip belly 7.

[0036] Specifically, in this embodiment, the anti-slip belly 7 can be formed by pressing and denting the clamping piece 6, which is a simple processing method and reduces production costs.

[0037] In a preferred embodiment of this utility model, the anti-slip belly 7 is an elastic arc-shaped piece 11. One end of the elastic arc-shaped piece 11 is fused and fixed to the inner wall of the clip 6, and the other end of the elastic arc-shaped piece 11 faces the pen tip, and the elastic arc-shaped piece 11 protrudes towards the pen barrel 1.

[0038] Specifically, in this embodiment, the inner diameter of the elastic arc-shaped piece 11 is smaller than the outer diameter of the pen barrel 1. When the user controls the hollow sleeve 2 to slide from the pen tip to the pen tail of the pen barrel 1, the elastic arc-shaped piece 11 is subjected to a force from the pen tail to the pen tip and a force from the center of the pen barrel 1 to the hollow sleeve 2, and deforms accordingly, generating resistance. When the user pushes the hollow sleeve 2 to slide from the pen tail to the pen tip of the pen barrel 1, the elastic arc-shaped piece 11 is subjected to a force from the pen tip to the pen tail and a force from the center of the pen barrel 1 to the hollow sleeve 2. At this time, the resistance between the elastic arc-shaped piece 11 and the pen barrel 1 is large, making it difficult for the elastic arc-shaped piece 11 and the pen barrel 1 to slide, requiring the user to apply more force. When the user pushes the hollow sleeve 2 in two directions, the user experiences the hollow sleeve 2 provides are different, making it easier for the user to distinguish the actions of pushing the hollow sleeve 2 in two directions.

[0039] In a preferred embodiment of the present invention, a protective pad 12 is embedded at the bottom of the end cap 3, and the protective pad 12 has a relief groove 13 for inserting the end of the pen tip.

[0040] Specifically, in this embodiment, a protective pad 12 is provided to prevent the pen tip from being damaged by direct collision with the bottom of the end cap 3. The pen tip has a ball bearing, and when the pen tip is inserted into the relief groove 13, the ball bearing does not contact the inner wall of the relief groove 13, thus preventing the ball bearing at the pen tip from being subjected to long-term force, which could lead to severe ink leakage from the pen refill.

[0041] In a preferred embodiment of this invention, the flexible connecting strip 4 is made of nylon material.

[0042] Specifically, in this embodiment, the nylon material has the characteristics of high toughness and tensile strength, which makes the flexible connecting strip 4 less prone to breakage and improves the connection strength between the end cap 3 and the hollow sleeve 2.

[0043] In a preferred embodiment of this invention, the hollow sleeve 2 is made of transparent plastic.

[0044] Specifically, in this embodiment, the transparent hollow sleeve 2 allows users to observe the relative position of the end cap 3 and the pen tip during actual use. Users can adjust the position of the hollow sleeve 2 according to the relative position of the end cap 3 and the pen tip, which improves the user experience.

[0045] In summary, if a user loses the cap of a regular ballpoint pen, the user can slip the hollow sleeve 2 onto the pen tip. The anti-slip belly 7 protrudes from the inner wall of the hollow sleeve 2, which clamps the pen barrel 1, making the hollow sleeve 2 less likely to fall off. The end cap 3 serves as a substitute for the pen cap. When the end cap 3 is fastened to the hollow sleeve 2, the pen tip is located inside the end cap 3.

[0046] When a user needs to use a ballpoint pen, they open the end cap 3 and move the hollow sleeve 2 upwards to expose the pen tip, allowing them to write. After use, the user moves the hollow sleeve 2 downwards and fastens the end cap 3 back onto it. The end cap 3 and the hollow sleeve 2 are connected by a flexible connecting strap 4 to prevent the end cap 3 from falling off the hollow sleeve 2.

[0047] Since the anti-slip belly 7 is deformable and the hollow sleeve 2 is fixed to the pen barrel 1 by friction, there are no requirements for the structure of the pen barrel 1. Therefore, it is suitable for the pen barrel 1 of various types of ballpoint pens with no specific surface structure, and its applicability is strong.

Claims

1. A structure for an anti-slip limiting device for a gel pen barrel, wherein the two ends of the pen barrel (1) are a pen tip and a pen tail, respectively, a pen refill is installed inside the pen barrel (1), the pen refill has a pen tip, and the pen tip protrudes from the pen tip, characterized in that: The anti-slip limiting device structure includes a hollow sleeve (2) fitted onto the pen barrel (1) and an end cap (3) detachably connected to the hollow sleeve (2). A flexible connecting strip (4) is connected between the hollow sleeve (2) and the end cap (3). The hollow sleeve (2) is circumferentially provided with a plurality of deformation gaps (5) to form a clip (6) at the end of the hollow sleeve (2) away from the pen tip. The clip (6) is elastic. The inner diameter of the end of the clip (6) away from the pen tip is not less than the outer diameter of the pen barrel (1). The inner wall of the clip (6) has an anti-slip belly (7) protruding toward the pen barrel (1).

2. The anti-slip limiting device structure according to claim 1, characterized in that: The end cap (3) has a protruding retaining ring (8) at the opening. One end of the hollow sleeve (2) has a first annular groove (9) for the retaining ring (8) to be inserted. When the end cap (3) is installed on the hollow sleeve (2), the outer side wall of the retaining ring (8) abuts against the side wall of the first annular groove (9).

3. The anti-slip limiting device structure according to claim 2, characterized in that: The retaining ring (8) includes a retaining ring body (81) and a sealing ring (82). The outer side wall of the retaining ring body (81) is provided with a second annular groove (10). The sealing ring (82) is embedded in the second annular groove (10), and the surface of the sealing ring (82) protrudes from the second annular groove (10).

4. The anti-slip limiting device structure according to claim 3, characterized in that: The outer wall of the clip (6) is dented to form the anti-slip belly (7).

5. The anti-slip limiting device structure according to claim 3, characterized in that: The anti-slip belly (7) is an elastic arc-shaped piece (11). One end of the elastic arc-shaped piece (11) is fused and fixed to the inner wall of the clip (6). The other end of the elastic arc-shaped piece (11) faces the pen tip, and the elastic arc-shaped piece (11) protrudes towards the pen barrel (1).

6. The anti-slip limiting device structure according to claim 4 or 5, characterized in that: The end cap (3) is fitted with a protective pad (12) at the bottom, and the protective pad (12) has a relief groove (13) for the end of the pen tip to be inserted.

7. The anti-slip limiting device structure according to claim 6, characterized in that: The flexible connecting strip (4) is made of nylon material.

8. The anti-slip limiting device structure according to claim 7, characterized in that: The hollow sleeve (2) is made of transparent plastic.

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