A gel pen that can prevent ink leakage

Abstract

The present invention discloses a neutral pen capable of preventing ink leakage, which comprises a pen shell, a pen core (1) and a pressing component. The pen core (1) is installed in the pen shell, the pressing component is movably connected to the tail end of the pen shell, and an opening and closing component is arranged inside the tail end of the pen core (1); a driving component is arranged between the tail end of the pen core (1) and the pressing component, and the back-and-forth movement of the pressing component can drive the driving component to open and close the opening and closing component. This ink leakage-preventing neutral pen can effectively prevent the phenomena of ink backflow or ink leakage at the pen tip.

Description

Technical Field

[0001] The present invention relates to the technical field of writing utensils, and more precisely, to a leak-proof gel pen. Background Art

[0002] In modern life, people cannot do without gel pens in study and work, and need to use gel pens for writing and recording. However, gel pens often have problems such as ink leakage and the tip not being able to write out ink, which affect people's use. In the prior art, ink leakage is usually caused by problems with the organic solution covering the ink, that is, the ink breaks through the organic solution and leaks along the pen core, or the organic solution cannot normally follow the ink downwards, or there is a problem with the ink outlet head, causing the ink to leak out. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a leak-proof gel pen that can effectively prevent the phenomenon of ink backflow or tip ink leakage.

[0004] The technical solution of the present invention is to provide a leak-proof gel pen with the following structure, including a pen shell, a pen core and a pressing component. The pen core is installed in the pen shell, the pressing component is movably connected to the tail end of the pen shell, and an opening and closing component is provided inside the tail end of the pen core; a driving component is provided between the tail end of the pen core and the pressing component, and the back-and-forth movement of the pressing component can drive the driving component to open and close the opening and closing component.

[0005] After adopting the above structure, the leak-proof gel pen of the present invention has the following advantages compared with the prior art:

[0006] Since the leak-proof gel pen of the present invention is provided with an opening and closing component inside the tail end of the pen core, the opening and closing component can prevent air from entering the pen core, effectively prevent ink backflow, and also effectively prevent tip ink leakage, making it more reliable for users to use. A driving component is provided between the tail end of the pen core and the pressing component, and the back-and-forth movement of the pressing component can drive the driving component to open and close the opening and closing component. When the opening and closing component is opened, the pen core can write normally, and when the opening and closing component is closed, it can prevent air from entering the valve core, making it flexible and reliable to use.

[0007] As an improvement, the opening and closing component includes a hollow plug. The plug is hermetically connected inside the tail end of the pen core, and the inner cavity of the plug can communicate with the inner cavity of the pen core; an air inlet and an air outlet are respectively provided at both ends of the plug; a closing door is provided at the air outlet, and the closing door blocks the air outlet; the driving component can drive the closing door to open and conduct the air outlet. After adopting this structure, the opening and closing component has a simple and reliable structure and is convenient to assemble.

[0008] As an improvement, one side of the closing door is interconnected with one side of the air outlet of the plug through an automatic return structure, and the automatic return structure applies a force to rotate the closing door towards the air outlet of the plug. After adopting this structure, after the thrust of the driving member is withdrawn, the closing door can quickly return to its position under the action of the automatic return structure.

[0009] As an improvement, the automatic return structure is a torsion spring, which is installed at the connection between the closing door and the plug. One end of the torsion spring is connected to the closing door, and the other end of the torsion spring is connected to the plug. After adopting this structure, the automatic return structure is simple and convenient to assemble.

[0010] As an improvement, the closing door is made of an elastic material, and the closing door is attached to the end face of the air outlet of the plug. One side of the closing door is connected to one side of the air outlet of the plug; the driving member can push the closing door to form a vent hole between the closing door and the plug. After adopting this structure, the structure is simple and convenient to manufacture.

[0011] As an improvement, the plug is also made of an elastic material, and the plug and the closing door are integrally formed. After adopting this structure, the integrity of the plug and the closing door structure is better.

[0012] As an improvement, the driving member includes an elastic support body and a probe. The elastic support body is arranged between the tail end of the refill and the pressing component. One end of the probe is connected to the elastic support body, and the other end of the probe is used to push the closing door. After adopting this structure, the driving member drives the air valve component to open and close through the probe, with a simple structure, convenient assembly, and good driving effect.

[0013] As an improvement, the elastic support body is a support spring. One end of the support spring abuts against the end face of the tail end of the refill, and the other end of the support spring abuts against the pressing component; the probe is installed inside the support spring, and one end of the probe is connected to the other end of the support spring. After adopting this structure, the support spring has a simple structure and good elasticity.

[0014] As an improvement, the probe and the support spring are integrally formed. After adopting this structure, the structure is simple, has good strength, and a long service life. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a neutral pen capable of preventing ink leakage in Embodiment 1.

[0016] Figure 2Exploded structural schematic diagram of the ballpoint pen capable of preventing ink leakage in Embodiment 1.

[0017] Figure 3 Partial three-dimensional structural schematic diagram of the ballpoint pen capable of preventing ink leakage in Embodiment 1.

[0018] Figure 4 For Figure 3 Enlarged structural schematic diagram of part A.

[0019] Figure 5 Assembly structural schematic diagram of the driving part and the plug of the ballpoint pen capable of preventing ink leakage in Embodiment 1.

[0020] Figure 6 Three-dimensional structural schematic diagram of the driving part of the ballpoint pen capable of preventing ink leakage in Embodiment 1.

[0021] As shown in the figure: 1. Refill, 2. Upper shell, 3. Lower shell, 4. Refill spring, 5. Plug, 501. Limiting flange, 502. Air inlet, 503. Air outlet, 6. Closing door, 7. Torsion spring, 8. Limiting sleeve, 801. Limiting ring, 802. Guide block, 9. Rotating body, 901. Driving block, 902. "V"-shaped groove, 903. Space, 10. Support spring, 11. Probe. Embodiment

[0022] To better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of the exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0023] In the accompanying drawings, for the sake of clarity, the thickness, dimensions and shapes of the objects have been slightly exaggerated. The drawings are only examples and are not drawn to an exact scale.

[0024] It should also be understood that the terms "comprising", "including", "having", "containing" when used in this specification denote the presence of the stated features, wholes, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. Embodiment

[0025] As Figures 1 to 6 shown, this specific embodiment discloses a ballpoint pen capable of preventing ink leakage, including a pen case, a refill 1 and a pressing component.

[0026] The pen case described above includes an upper shell 2 and a lower shell 3. The lower end of the upper shell 2 is threadedly connected to the upper end of the lower shell 3. An inner cavity is formed between the upper shell 2 and the lower shell 3, and the pen refill 1 is installed in the inner cavity. A pen refill spring 4 is provided between the lower end of the pen refill 1 and the lower end of the lower shell 3. This structure is prior art and will not be elaborated here.

[0027] An opening and closing assembly is provided inside the tail end of the pen refill 1. The opening and closing assembly is used to prevent air from entering the pen refill 1 when not writing. The opening and closing assembly includes a hollow plug 5. The plug 5 is tightly fitted inside the tail end of the pen refill 1 and is hermetically connected to the inner wall of the pen refill 1. A limiting flange 501 is provided at the end of the plug 5, and the limiting flange 501 is limited on the end face of the tail end of the pen refill 1. An air inlet 502 and an air outlet 503 are respectively provided at both ends of the plug 5. A closing door 6 is provided at the air outlet 503. The closing door 6 blocks the air outlet 503, and the driving member can drive the closing door 6 to open to conduct the air outlet 503. At this time, the inner cavity of the plug 5 is communicated with the inner cavity of the pen refill 1.

[0028] One side of the closing door 6 and one side of the air outlet 503 of the plug 5 are connected to each other through an automatic rebound structure. The automatic rebound structure gives the closing door 6 a force to rotate towards the air outlet 503 of the plug 5. In this specific embodiment, the automatic rebound structure is a torsion spring 7. The torsion spring 7 is installed at the connection between the closing door 6 and the plug 5. One end of the torsion spring 7 is connected to the closing door 6, and the other end of the torsion spring 7 is connected to the plug 5.

[0029] The pressing component described is a prior art. Pressing the pressing component once causes the tip of the refill 1 to protrude from the tip hole of the lower housing 3, and the refill 1 can be used for normal writing. Pressing the pressing component again causes the tip of the refill 1 to extend into the lower end of the lower housing 3. This structure is a conventional structure of a press-type gel pen. In the prior art, any structure that can achieve the above functions can be applied to the present invention, and the specific structure will not be described in detail here. A limiting sleeve 8 is provided inside the upper end of the upper housing 2. The pressing component includes a rotating member 9, and the rotating member 9 is movably limited inside the limiting sleeve 8. The rotating member 9 is of a hollow structure. A driving block 901 is provided at the lower end of the rotating member 9, and a "V"-shaped groove 902 is provided on the lower end surface of the driving block 901. This is a prior art. The driving block 901 protrudes from the side wall of the rotating member 9. A limiting ring 801 is provided on the inner wall of the limiting sleeve 8, and the driving block 901 is limited below the limiting ring 801. A plurality of driving blocks 901 are provided, and a space 903 is left between adjacent driving blocks 901. Guide blocks 802 corresponding in number to the driving blocks 901 are provided on the inner wall of the limiting sleeve 8. When the rotating member 9 is pressed, the guide blocks 802 are inserted into the space 903 at intervals and the lower ends of the guide blocks 802 abut against the upper end surfaces of the driving blocks 901. When the guide blocks 802 are inserted into the space 903, the tip of the refill 1 extends into the lower end of the lower housing 3. When the lower ends of the guide blocks 802 abut against the upper end surfaces of the driving blocks 901, the tip of the refill 1 protrudes outside the tip hole of the lower housing 3.

[0030] A driving member is provided between the tail end of the refill 1 and the rotating member 9. Pressing the rotating member 9 can drive the driving member to open and close the closing door 6. The driving member includes an elastic support body and a probe 11. The elastic support body is provided between the tail end of the refill 1 and the rotating member 9. In this specific embodiment, the elastic support body is a support spring 10. One end of the support spring 10 abuts against the end surface of the tail end of the refill 1, and the other end of the support spring 10 abuts against the inner wall of the rotating member 9. The probe 11 is installed inside the support spring 10. One end of the probe 11 is connected to the other end of the support spring 10, and the probe 11 and the support spring 10 are integrally formed. The other end of the probe 11 is located on one side of the air inlet hole, and the probe 11 is coaxially arranged with the air inlet hole. The diameter of the probe 11 is smaller than the aperture of the air inlet hole. Pressing the rotating member 9 downward can push the probe 11 towards the air inlet hole. After the probe 11 passes through the air inlet hole, it can push the closing door 6 to rotate and open the closing door 6. At this time, air can enter the refill 1, and then normal writing can be carried out. Embodiment

[0031] This specific embodiment discloses a neutral pen that can prevent ink leakage. The difference between this specific embodiment and Embodiment 1 is that: both the plug and the closing door are made of elastic materials, and the plug and the closing door are integrally formed. The closing door is attached to the end face of the air outlet of the plug, and one side of the closing door is connected to one side of the air outlet of the plug; the driving member can push to form an air-permeable opening between the closing door and the plug.

[0032] The present invention is not limited to the above-mentioned best embodiment. Any person can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as it has the same or similar technical solutions as this application, it falls within the protection scope of the present invention.

Claims

1. A gel pen capable of preventing ink leakage, comprising a pen case, a pen refill (1) and a pressing component. The pen refill (1) is installed in the pen case, and the pressing component is movably connected to the tail end of the pen case. Characterized in that: An opening and closing component is provided inside the tail end of the pen refill (1); a driving component is provided between the tail end of the pen refill (1) and the pressing component. The reciprocating movement of the pressing component can drive the driving component to open and close the opening and closing component. The opening and closing component includes a hollow plug (5). The plug (5) is hermetically connected inside the tail end of the pen refill (1). The inner cavity of the plug (5) can communicate with the inner cavity of the pen refill (1). An air inlet (502) and an air outlet (503) are respectively provided at both ends of the plug (5). A closing door (6) is provided at the air outlet (503). The closing door (6) blocks the air outlet (503). The driving component can drive the closing door (6) to open and conduct the air outlet (503). The driving component includes an elastic support body and a probe (11). The elastic support body is provided between the tail end of the pen refill (1) and the pressing component. One end of the probe (11) is connected to the elastic support body, and the other end of the probe (11) is used to push the closing door (6).

2. The gel pen capable of preventing ink leakage according to claim 1, Characterized in that: One side of the closing door (6) and one side of the air outlet (503) of the plug (5) are connected to each other through an automatic return structure. The automatic return structure gives the closing door (6) a force to rotate towards the air outlet (503) of the plug (5).

3. The gel pen capable of preventing ink leakage according to claim 2, Characterized in that: The automatic return structure is a torsion spring (7). The torsion spring (7) is installed at the connection between the closing door (6) and the plug (5). One end of the torsion spring (7) is connected to the closing door (6), and the other end of the torsion spring (7) is connected to the plug (5).

4. The gel pen capable of preventing ink leakage according to claim 2, Characterized in that: The closing door (6) is made of an elastic material. The closing door (6) is attached to the end face of the air outlet (503) of the plug (5). One side of the closing door (6) is connected to one side of the air outlet (503) of the plug (5). The driving component can push the closing door (6) to form a vent hole between the closing door (6) and the plug (5).

5. The gel pen capable of preventing ink leakage according to claim 4, Characterized in that: The plug (5) is also made of an elastic material, and the plug (5) and the closing door (6) are integrally formed.

6. The gel pen capable of preventing ink leakage according to claim 1, Characterized in that: The elastic support is a support spring (10). One end of the support spring (10) abuts against the end face of the tail end of the refill (1), and the other end of the support spring (10) abuts against the pressing component; the probe (11) is installed in the support spring (10), and one end of the probe (11) is connected to the other end of the support spring (10).

7. The neutral pen capable of preventing ink leakage according to claim 6, characterized in that: the probe (11) and the support spring (10) are integrally formed.

Images