Ballpoint pen capable of preventing ink leakage

Abstract

The utility model discloses an ink-leakage-proof ballpoint pen, and aims to provide an ink-leakage-proof ballpoint pen capable of improving the assembly effect and the leakage-proof effect. The pen comprises a pen point, a refill is inserted into the pen point, and the refill is connected with a pen point. The pen cap shell is connected with the pen point in a sleeving manner; the leakage-proof blocking block is connected with the pen cap shell, a receding groove is formed in the leakage-proof blocking block, and the pen point is connected with the receding groove in an inserted mode; the pen cap shell is movably connected with a pen clip, the pushing assembly is connected with the pen clip, the leakage-proof blocking block is connected with a matching block, and the pushing assembly is movably connected with the matching block; the guide seat is connected with the pen cap shell, and one end of the leakage-proof plugging block abuts against the guide seat; the fixed seat is connected with the pen cap shell, and the other end of the leakage-proof blocking block abuts against the fixed seat. The ball-point pen has the beneficial effects that the ink leakage prevention effect, the structural assembly stability and the operation precision of the ball-point pen are improved; the assembly efficiency is improved; the operation efficiency and smoothness are improved; the protection effect of the pen cap shell is improved.

Description

Technical Field

[0001] This utility model relates to the field of ballpoint pen manufacturing technology, and in particular to a leak-proof ballpoint pen. Background Technology

[0002] A ballpoint pen is a writing instrument that uses a tiny rotating ball to write ink onto paper. This ball is made of brass, steel, or tungsten carbide and releases ink onto the paper while writing. After a certain period of writing, the gap between the ball and the steel tube gradually widens, causing ink to leak out and often stain clothing, etc.

[0003] Chinese Patent Publication No.: CN 218615998 U, Publication Date: March 14, 2023. This utility model proposes a high-efficiency leak-proof ballpoint pen, including a pen barrel and a pen cap. The pen barrel contains a pen core, the bottom end of which is engaged with a pen tip. A steel ball is located at the bottom end of the pen tip. A threaded cap is threaded to the bottom end of the pen barrel via a threaded tube. The pen cap is engaged with the bottom of the pen barrel. A pen clip is fixedly attached to one side of the pen cap. A threaded cover is threaded to the bottom end of the pen cap. A limiting rod is fixedly connected to the inner wall of the threaded cover. A leak-proof component is slidably connected to the limiting rod. The top of the leak-proof component is slidably connected to the inner wall of the pen cap. The middle part of the top of the leak-proof component is engaged with the bottom end of the pen tip. The shortcomings of this technical solution are: 1. The pen tip mainly contacts the leak-proof component through its top, making the leak-proof measure passive and reducing its effectiveness; 2. Insufficient positioning of the rubber block during assembly makes it easy for the pen tip to not contact properly.

[0004] In summary, existing ballpoint pens suffer from deficiencies in structural assembly and ink leakage prevention. Utility Model Content

[0005] The present invention aims to overcome the shortcomings of existing ballpoint pens in terms of poor structural assembly and ink leakage prevention, and provides an ink-proof ballpoint pen that improves assembly and leakage prevention.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A leak-proof ballpoint pen, including

[0008] The pen tip is connected to the pen refill, and the pen refill is connected to the pen nib.

[0009] Pen cap shell, which is connected to the pen tip;

[0010] Leak-proof plug, the leak-proof plug is connected to the pen cap shell, the leak-proof plug is provided with a relief groove, and the pen tip is inserted into the relief groove;

[0011] The push component is connected to the pen clip, the pen cap shell is connected to the push component, the anti-leakage block is connected to the mating block, and the push component is movably connected to the mating block.

[0012] The guide seat is connected to the pen cap shell, and one end of the leak-proof plug abuts against the guide seat;

[0013] The fixing base is connected to the pen cap shell, and the other end of the leak-proof plug abuts against the fixing base.

[0014] The pen refill inserts into the pen tip and extends to the pen nib. The pen cap is fitted onto the nib and protected by a leak-proof plug. The leak-proof plug, made of rubber, wraps around the tip and sides of the nib through a recessed groove, providing a large area of ​​coverage and achieving a high degree of ink leakage prevention. The pushing component, through the movement of the mating block, pushes the leak-proof plug inwards into the recessed groove, further strengthening the seal and enhancing the leak-proof effect. Guide seats and fixing seats position and secure the pen nib at both ends of the leak-proof plug, making assembly easier and more stable, while also improving the fit between the pushing component and the mating block. This results in improved ink leakage prevention, structural assembly stability, and operational accuracy of the ballpoint pen.

[0015] Preferably, the actuating assembly includes a connecting ring, a slider, and a movable push block. The pen cap shell has a guide hole, and the slider is slidably connected to the guide hole. One end of the slider is detachably connected to the connecting ring, and the other end of the slider is connected to the movable push block. The movable push block is slidably connected to a mating block, and the pen clip is connected to the connecting ring. The slider is inserted into the guide hole and moves up and down along the guide hole, thereby driving the movable push block to move up and down inside the pen cap shell. The connecting ring (or pen tip) facilitates control of the up and down movement, thereby quickly pressing the mating blocks together to ensure the anti-leakage block presses against the pen tip to prevent ink leakage. This improves the connection and operational stability of the actuating assembly.

[0016] Preferably, the slider has a threaded hole, and a fixing screw is inserted into the connecting ring. The fixing screw is threadedly connected to the threaded hole. The slider is connected to the fixing screw through the threaded hole, allowing the slider and the moving push block to be quickly pre-assembled with the guide hole during assembly, and then connected to the connecting ring through the fixing screw. This improves assembly efficiency and stability.

[0017] Preferably, one end face of the movable push block is designed as a guide surface with an arc-shaped cross-section. The mating block has a semi-circular structure, with its flat surface connected to the leak-proof block and its arc-shaped surface slidably connected to the guide surface. The arc-shaped end face of the movable push block facilitates better friction with the arc-shaped surface of the mating block during pushing, resulting in smoother pen tip clamping. This improves operational efficiency and smoothness.

[0018] Preferably, the guide seat includes a guide strip and a guide block. The guide strip is connected to the inner wall of the pen cap shell and has a guide slot. The guide block is connected to the leak-proof plug and is inserted into the guide slot. Through the cooperation between the guide slot and the guide block, the position of the mating block after the leak-proof plug is installed matches the position of the guide sliding hole, allowing the movable push block to accurately push the mating block. This improves the operational accuracy of the pushing component.

[0019] Preferably, the fixing base has a through hole at its center, through which the pen tip passes. The outer side of the fixing base has external threads, and the inner wall of the pen cap shell has internal threads. The fixing base is threadedly connected to the pen cap shell. The pen tip of the refill passes through the through hole of the fixing base and enters the leak-proof plug. The outer side of the fixing base is fixed by screwing it onto the inner wall of the pen cap shell, thereby fixing the leak-proof plug inside the pen cap shell and preventing it from moving up and down. This achieves the effect of improving the assembly efficiency of the fixing base and the stability of the leak-proof plug.

[0020] Preferably, the connecting ring is connected to a retaining ring, which is sleeved on the pen cap shell. The length of the retaining ring is greater than the length of the guide hole. The greater length of the retaining ring ensures that the guide hole is blocked when the pen cap shell is protecting the pen tip, thus preventing debris from entering the pen cap shell. This improves the protective effectiveness of the pen cap shell.

[0021] Preferably, the pen cap shell has a guide rail on its surface, and a locking block is connected to the inner wall of the retaining ring, with the locking block slidably connected to the guide rail. The retaining ring's movement on the pen cap shell surface is limited by the movement of the locking block within the guide rail, preventing the retaining ring from falling out of the pen cap shell. This improves connection stability.

[0022] The beneficial effects of this utility model are: improving the ink leakage prevention effect, structural assembly stability and operational accuracy of ballpoint pens; improving assembly efficiency; improving operational efficiency and smoothness; and improving the protective effect of the pen cap. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 yes Figure 1 A sectional view;

[0025] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0026] In the diagram: 1. Pen tip, 2. Pen refill, 3. Pen nib, 4. Pen cap shell, 5. Leak-proof plug, 6. Relief groove, 7. Pen clip, 8. Mating block, 9. Fixing base, 10. Connecting ring, 11. Slider, 12. Moving push block, 13. Guide slide rail, 14. Guide slide hole, 15. Screw hole, 16. Fixing screw, 17. Guide slide surface, 18. Guide strip, 19. Guide insert, 20. Guide slot, 21. Through hole, 22. Retaining ring, 23. Locking block. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components illustrated in these embodiments do not limit the scope of this application. For ease of illustration, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, an element described as being “below” other elements or features would be positioned “up” other elements or features. Thus, the exemplary term “down” can include both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale. Techniques, processes, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, processes, and equipment should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0031] Example 1:

[0032] like Figure 1 , 2 As shown, a leak-proof ballpoint pen includes a pen tip 1, a pen refill 2 inserted into the pen tip 1, and a pen nib 3 connected to the pen refill 2; a pen cap 4, which is sleeved on the pen tip 1; a leak-proof plug 5, which is connected to the pen cap 4 and has a clearance groove 6, into which the pen nib 3 is inserted; a pushing component, which is movably connected to the pen clip 7 and the pen cap 4, and is connected to the pen clip 7; a mating block 8 connected to the leak-proof plug 5 and is movably connected to the pushing component and the mating block 8; a guide seat, which is connected to the pen cap 4, and one end of the leak-proof plug 5 abuts against the guide seat; and a fixing seat 9, which is connected to the pen cap 4, and the other end of the leak-proof plug 5 abuts against the fixing seat 9.

[0033] like Figure 2 , 3As shown, the pushing assembly includes a connecting ring 10, a slider 11, and a movable push block 12. The pen cap shell 4 is provided with a guide sliding hole 14. The slider 11 is slidably connected to the guide sliding hole 14. One end of the slider 11 is detachably connected to the connecting ring 10, and the other end of the slider 11 is connected to the movable push block 12. The movable push block 12 is slidably connected to the mating block 8. The pen clip 7 is connected to the connecting ring 10.

[0034] like Figure 3 As shown, the slider 11 is provided with a screw hole 15, and the connecting ring 10 is inserted with a fixing screw 16, which is threadedly connected to the screw hole 15.

[0035] like Figure 3 As shown, one end face of the movable push block 12 is set as a guide sliding surface 17. The cross-sectional shape of the guide sliding surface 17 is arc-shaped. The structural shape of the mating block 8 is semi-circular. The plane of the mating block 8 is connected to the leak-proof blocking block 5, and the arc-shaped surface of the mating block 8 is slidably connected to the guide sliding surface 17.

[0036] like Figure 2 As shown, the guide seat includes a guide bar 18 and a guide block 19. The guide bar 18 is connected to the inner wall of the pen cap shell 4. The guide bar 18 is provided with a guide slot 20. The guide block 19 is connected to the anti-leakage block 5 and is inserted into the guide slot 20.

[0037] like Figure 2 , 3 As shown, the center of the fixing seat 9 is provided with a through hole 21, the pen tip 3 passes through the through hole 21, the outer side of the fixing seat 9 is provided with an external thread, the inner wall of the pen cap shell 4 is provided with an internal thread, and the fixing seat 9 is threadedly connected to the pen cap shell 4.

[0038] like Figure 1 , 2 As shown, the connecting ring 10 is connected to a retaining ring 22, which is sleeved with the pen cap shell 4. The length of the retaining ring 22 is greater than the length of the guide slide hole 14. The surface of the pen cap shell 4 is provided with a guide slide rail 13, and the inner wall of the retaining ring 22 is connected to a locking block 23, which is slidably connected to the guide slide rail 13.

[0039] like Figure 1-3 As shown: Multiple pairs of mating blocks 8 are set on the pen cap shell 4 and evenly arranged relative to each other, so as to simultaneously press the anti-leakage blocking block 5 to make the relief groove 6 recessed inward.

[0040] When in use: put the pen cap 4 into the pen tip 1, so that the pen tip 3 passes through the through hole 21 and enters the relief groove 6. Move the pen clip 7 so that the connecting ring 10 drives the sliding block 12 to press the mating block 8 through the slider 11. When the slider 11 moves to the end, all mating blocks 8 press inward to press the anti-leakage block 5, so that the relief groove 6 sinks in to press the pen tip 3 to prevent the pen core 2 from leaking ink.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A leak-proof ballpoint pen, characterized in that, include Pen tip (1), the pen tip (1) is connected to a pen core (2), the pen core (2) is connected to a pen tip (3); Pen cap shell (4), which is sleeved with pen tip (1); Leak-proof plug (5), the leak-proof plug (5) is connected to the pen cap shell (4), the leak-proof plug (5) is provided with a relief groove (6), and the pen tip (3) is inserted into the relief groove (6); The pen cap shell (4) is movably connected to the pen clip (7), the push component is connected to the pen clip (7), the leak-proof block (5) is connected to the mating block (8), and the push component is movably connected to the mating block (8); The guide seat is connected to the pen cap shell (4), and one end of the leak-proof block (5) abuts against the guide seat; The fixing seat (9) is connected to the pen cap shell (4), and the other end of the anti-leakage block (5) abuts against the fixing seat (9).

2. The ink-proof ballpoint pen according to claim 1, characterized in that, The pushing assembly includes a connecting ring (10), a slider (11), and a movable push block (12). The pen cap shell (4) is provided with a guide sliding hole (14). The slider (11) is slidably connected to the guide sliding hole (14). One end of the slider (11) is detachably connected to the connecting ring (10). The other end of the slider (11) is connected to the movable push block (12). The movable push block (12) is slidably connected to the mating block (8). The pen clip (7) is connected to the connecting ring (10).

3. A leak-proof ballpoint pen according to claim 2, characterized in that, The slider (11) is provided with a screw hole (15), and the connecting ring (10) is inserted with a fixing screw (16), and the fixing screw (16) is threadedly connected to the screw hole (15).

4. A leak-proof ballpoint pen according to claim 3, characterized in that, One end face of the movable push block (12) is set as a guide sliding surface (17), the cross-sectional shape of the guide sliding surface (17) is arc-shaped, the structural shape of the mating block (8) is semi-circular, the plane of the mating block (8) is connected to the leak-proof block (5), and the arc surface of the mating block (8) is slidably connected to the guide sliding surface (17).

5. A leak-proof ballpoint pen according to claim 1, characterized in that, The guide seat includes a guide strip (18) and a guide plug (19). The guide strip (18) is connected to the inner wall of the pen cap shell (4). The guide strip (18) is provided with a guide slot (20). The guide plug (19) is connected to a leak-proof block (5). The guide plug (19) is inserted into the guide slot (20).

6. A leak-proof ballpoint pen according to claim 1, characterized in that, The fixing seat (9) has a through hole (21) at its center, through which the pen tip (3) passes. The outer side of the fixing seat (9) has an external thread, and the inner wall of the pen cap shell (4) has an internal thread. The fixing seat (9) is threadedly connected to the pen cap shell (4).

7. A leak-proof ballpoint pen according to claim 2, characterized in that, The connecting ring (10) is connected to a retaining ring (22), which is sleeved with the pen cap shell (4). The length of the retaining ring (22) is greater than the length of the guide sliding hole (14).

8. A leak-proof ballpoint pen according to claim 7, characterized in that, The surface of the pen cap shell (4) is provided with a guide rail (13), and the inner wall of the retaining ring (22) is connected with a locking block (23), which is slidably connected to the guide rail (13).

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