Novel multi-bead wear-resistant pen point

Abstract

The utility model aims to provide the novel multi-bead wear-resistant pen point which is more wear-resistant and ensures the writing smoothness. Comprising a pen core and a pen point connected to the end of the pen core, an ink passing channel allowing ink to flow is formed in the pen point, and a spring is arranged in the ink passing channel. A first ball bead and a second ball bead are embedded in a cavity formed between the ball seat opening and the ball seat base, the first ball bead is arranged between the ball seat opening and the second ball bead, the second ball bead is arranged between the first ball bead and the ball seat base, and the end of a spring in the ink passing channel abuts against the second ball bead. The first ball bead, the second ball bead and the spring are in a coaxial state, different from the prior art, when the first ball bead rotates at a high speed, the friction surface in contact with the second ball bead is the second ball bead, equivalently, the ball base is not subjected to any friction force from the ball beads, and the ball base is prevented from being abraded.

Description

Technical Field

[0001] The invention relates to a cultural product, and more particularly to a novel multi-bead wear-resistant pen tip. Background Art

[0002] A gel pen is a pen that uses a ball at the front end of the pen or refill to roll out the writing medium.

[0003] The pen includes a nib, a refill, a pen shaft and a tip cover, wherein the nib is connected to the end of the refill and is the most sophisticated component of the pen. The interior of the nib is a hollow structure, provided with an oil groove, a ball seat bottom, a ring groove, a ball seat mouth and a ball, wherein the ball is clamped between the ball seat bottom and the ball seat mouth. The ink in the refill enters the nib and adheres to the ball through the oil groove, and is then brought out by the ball to achieve writing. During this process, the ball rotates at a speed of up to 300 revolutions per second, and the friction coefficient is also very high under ultra-high-speed rotation. During the rotation, the main contact surface of the ball is at the bottom of the ball seat, so it is very easy to cause wear of the ball base. And because the oil groove is opened on the ball base (for details, please refer to Figure 1 This wear will cause the oil outlet of the oil groove to become smaller or deformed, affecting the oil output.

[0004] This technical solution aims to propose corresponding solutions for the above technical solutions. Summary of the invention

[0005] The design purpose of the invention is to provide a novel multi-bead wear-resistant pen tip which is more wear-resistant and ensures writing fluency.

[0006] In order to achieve the above technical purpose, the following technical scheme is specially provided: a new type of multi-ball wear-resistant pen tip, including a pen core and a pen tip connected to the end of the pen core, an ink passage for ink circulation is arranged in the pen tip, and a spring is arranged in the ink passage, characterized in that a ball seat bottom is arranged in the pen tip, an oil groove is opened on the ball seat bottom, a ball seat mouth is arranged at the oil outlet of the pen tip, a first ball and a second ball are embedded in the cavity formed between the ball seat mouth and the ball seat bottom, the first ball is arranged between the ball seat mouth and the second ball, and the second ball is arranged between the first ball and the ball seat bottom, wherein the end of the spring in the ink passage abuts against the second ball, and the first ball, the second ball and the spring are in a coaxial state.

[0007] Through the above technical solution: the ink in the pen core enters the ink passage, then enters the cavity from the oil groove and then adheres to the ball. When writing, the ball rotates to bring out the ink to complete the writing operation. In this process, different from the prior art, the writing ball in this technical solution, that is, the first ball, does not directly contact the ball base, but a second ball is added between the two. During the writing process, the friction surface contacted by the first ball when rotating at high speed is the second ball. The friction surface of the two spheres is very small and due to the small friction coefficient, the second ball actually remains stationary during this process, which is equivalent to the ball base not being subjected to any friction from the ball, which well avoids the ball base from being worn. Since the oil groove for passing ink is opened on the ball base, the oil groove will not become smaller or deformed due to the wear of the ball base, thereby ensuring the stability of the ink output of the pen tip, so that the pen maintains good comfort and durability.

[0008] This technical solution is further optimized as follows: the diameter of the second ball is smaller than that of the first ball, and an annular groove adapted to the second ball is provided on the surface opposite to the bottom of the ball seat.

[0009] Through the above technical solution: the first ball and the second ball are both arranged in the cavity formed between the ball seat mouth and the ball base, and the ink comes out of the oil groove and enters the cavity and then adheres to the first ball. Therefore, the second ball arranged between the first ball and the ball base must be smaller than the first ball, otherwise it is not conducive to the passage of ink, and the annular groove opened at the corresponding position can fix the second ball in a relative position while maintaining its sensitivity, thereby better ensuring that the first ball, the second ball and the spring are in a coaxial state.

[0010] The technical solution is further optimized as follows: a third ball is further arranged in the ink passage, wherein the third ball is arranged between the spring and the second ball, and is coaxial with the first ball, the second ball and the spring.

[0011] Through the above technical solution: adding a third ball between the spring and the second ball can ensure the stability of the force between the ball and the spring during writing, and can improve the comfort of writing.

[0012] This technical solution is further optimized as follows: the diameter of the third ball is smaller than that of the second ball, and an annular groove adapted to the third ball is provided on the surface opposite to the bottom of the ball seat.

[0013] The technical solution is further optimized as follows: the end of the spring arranged in the ink passage that contacts the third ball is in a truncated cone shape, and the spring supports the third ball to make it abut against the second ball.

[0014] Through the above technical solution: different from the ejector pin structure at the end of the spring in the prior art, the use of a truncated cone structure in contact with the third ball can make the force applied to the ball when squeezing the spring more uniform, thereby improving the writing comfort and further optimizing the technical solution.

[0015] The technical solution is further optimized as follows: the oil grooves are provided with one or at least three, which are provided on the ball base at circumferential intervals.

[0016] This technical solution is further optimized as follows: the thickness of the ball seat mouth is between 1-1.5 wires.

[0017] Through the above technical solution: it is not easy to scratch the paper, making writing smoother, and it is not easy to be damaged or deformed, and the quality of the pen tip can be guaranteed during transportation and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a pen tip in the prior art;

[0019] Figure 2 is a schematic structural diagram of the first embodiment in a cross-sectional state;

[0020] Figure 3 for Figure 2 A magnified view of some structures;

[0021] Figure 4 It is a schematic diagram of the structure of the second embodiment in a cross-sectional state;

[0022] Figure 5 for Figure 4 A partial enlarged view of

[0023] Figure 6 This is a schematic diagram of the structure of the second embodiment.

[0024] In the figure: 1, pen tip; 2, ink passage; 3, spring; 4, ball seat bottom; 5, ball seat mouth; 6, first ball; 7, second ball; 8, third ball; 9, ring groove; 10, oil groove. DETAILED DESCRIPTION

[0025] Reference Figures 1 to 4 The embodiments of the present invention are further described.

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] Embodiment 1:

[0029] The utility model comprises a refill and a nib 1 connected to the end of the refill, an ink passage 2 for ink circulation is arranged in the nib 1, a spring 3 is arranged in the ink passage 2, and the characteristic is that a ball seat bottom 4 is arranged in the nib 1, an oil groove 10 is opened on the ball seat bottom, a ball seat opening 5 is arranged at the oil outlet of the nib 1, a first ball 6 and a second ball 7 are embedded in a cavity formed between the ball seat opening 5 and the ball seat bottom, the first ball 6 is arranged between the ball seat opening 5 and the second ball 7, and the second ball 7 is arranged between the first ball 6 and the ball seat bottom 4, wherein the end of the spring 3 in the ink passage 2 abuts against the second ball 7, and the first ball 6, the second ball 7 and the spring 3 are in a coaxial state.

[0030] During the specific implementation process, the ink in the pen core enters the ink passage 2, then enters the cavity from the oil groove 10 and then adheres to the ball. When writing, the ball rotates to bring out the ink to complete the writing operation. In this process, different from the prior art, the writing ball in this technical solution, that is, the first ball 6, does not directly contact the ball base, but a second ball 7 is added between the two. During the writing process, the friction surface contacted by the first ball 6 when rotating at high speed is the second ball 7. The friction surface of the two spheres is very small and due to the small friction coefficient, the second ball 7 actually remains stationary during this process, which is equivalent to the ball base not being subjected to any friction from the ball, and the ball base is well prevented from being worn. Since the oil groove 10 for passing ink is opened on the ball base, the oil groove 10 will not become smaller or deformed due to the wear of the ball base, thereby ensuring the stability of the ink output of the pen head 1, so that the pen maintains good comfort and durability.

[0031] To ensure the implementation of the solution, in this technical solution, the diameter of the second ball 7 is smaller than that of the first ball 6, because the first ball 6 and the second ball 7 are both arranged in the cavity formed between the ball seat mouth 5 and the ball base, and the ink comes out of the oil groove 10 and enters the cavity and then adheres to the first ball 6. Therefore, the second ball 7 arranged between the first ball 6 and the ball base must be smaller than the first ball 6, otherwise it is not conducive to the passage of ink.

[0032] In addition, in the present technical solution, the first ball 6, the second ball 7 and the spring 3 are in a coaxial state, because only by maintaining this state can the actual implementation be guaranteed. In the existing technology, the spring 3 itself is coaxially arranged with the ball. What needs to be considered in this solution is how to make the newly added second ball 7 also remain coaxial. Therefore, an annular groove 9 adapted to the second ball 7 is specially opened on the surface opposite to the bottom 4 of the ball seat, and the second ball 7 is clamped in the annular groove 9. With the help of this structure, the second ball 7 can be fixed in a relative position while maintaining its sensitivity, thereby better ensuring that the first ball 6, the second ball 7 and the spring 3 are in a coaxial state.

[0033] To further optimize the solution, the oil groove 10 in the technical solution is provided with one or at least three grooves, which are provided on the ball base at intervals in the circumferential direction. It is preferred that three grooves are provided at intervals in the circumferential direction, so that the ink discharge can be well controlled. The thickness of the ball seat mouth 5 is controlled between 1-1.5 threads. It is preferred to be 1.2 threads, which is not easy to scratch the paper, making writing smoother, and not easy to be damaged or deformed, so that the quality of the pen head 1 can be guaranteed during transportation and assembly.

[0034] Of course, the above technical solution will not impose specific size restrictions on the first ball 6, the second ball 7, the ball seat mouth 5, the ball seat bottom 4 and any other components. Different pen types need to be adapted to pen tips 1 of different shapes and sizes. The change in the appearance of the pen tip 1 means that although the internal structure remains unchanged, the size will need to be changed. Therefore, the applicant is not limited to protecting the size.

[0035] Embodiment 2:

[0036] Based on the technology of the first embodiment, a third ball 8 is added in the ink passage 2, wherein the third ball 8 is arranged between the spring 3 and the second ball 7, and is coaxial with the first ball 6, the second ball 7 and the spring 3. The third ball 8 is added between the spring 3 and the second ball 7 to ensure the stability of the force between the ball and the spring 3 during writing, and to improve the comfort of writing. The diameter of the third ball 8 is smaller than the second ball 7, and the surface of the ball seat bottom 4 opposite to it is provided with an annular groove 9 adapted to the third ball 8, and the provision of the annular groove 9 can also ensure that the relative position of the third ball 8 is fixed.

[0037] The technical solution can be further optimized as follows: the end of the spring 3 arranged in the ink passage 2 that contacts the third ball 8 is truncated cone-shaped, and the spring 3 supports the third ball 8 so that it contacts the second ball 7. In the prior art, the ejector structure at the end of the spring 3, when writing, the first ball 6 is against the paper surface, and the first ball 6 is slightly pushed upward to overcome the elastic force of the spring 3, at which time a gap is generated between the first ball 6 and the ball base, and the ink flows out for writing. When not writing, the elastic force of the spring 3 makes the first ball 6 push outward, so that the first ball 6 is pressed against the ball base to maintain sealing, and the ink does not flow out. However, different from this technology, the technical solution, on the basis of adding the second ball 7 and the third ball 8, changes the end of the spring 3 that contacts the third ball 8 into a truncated cone shape, so that the ball can be more evenly stressed when squeezing the spring 3, improve the comfort of writing, and further optimize the technical solution.

[0038] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A novel multi-bead wear-resistant pen tip, comprising a pen core and a pen tip (1) connected to the end of the pen core, an ink passage (2) for ink circulation is arranged in the pen tip (1), a spring (3) is arranged in the ink passage (2), and the characteristics are: The pen tip (1) is provided with a ball seat bottom (4), an oil groove (10) is provided on the ball seat bottom, a ball seat opening (5) is provided at the oil outlet of the pen tip (1), a first ball (6) and a second ball (7) are embedded in a cavity formed between the ball seat opening (5) and the ball seat bottom, the first ball (6) is provided between the ball seat opening (5) and the second ball (7), and the second ball (7) is provided between the first ball (6) and the ball seat bottom (4), wherein the end of the spring (3) in the ink passage (2) abuts against the second ball (7), and the first ball (6), the second ball (7) and the spring (3) are in a coaxial state, the diameter of the second ball (7) is smaller than that of the first ball (6), and an annular groove (9) adapted to the second ball (7) is provided on the surface opposite to the ball seat bottom (4).

2. A novel multi-bead wear-resistant pen tip according to claim 1, characterized in that: A third ball (8) is also arranged in the ink passage (2), wherein the third ball (8) is arranged between the spring (3) and the second ball (7), and is coaxial with the first ball (6), the second ball (7) and the spring (3).

3. A novel multi-bead wear-resistant pen tip according to claim 2, characterized in that: The diameter of the third ball (8) is smaller than that of the second ball (7), and a ring groove (9) adapted to fit the third ball (8) is provided on the surface opposite to the bottom (4) of the ball seat.

4. The novel multi-bead wear-resistant pen tip according to claim 3, characterized in that: The end of the spring (3) arranged in the ink passage (2) that contacts the third ball (8) is in a truncated cone shape, and the spring (3) supports the third ball (8) so that it abuts against the second ball (7).

5. The novel multi-bead wear-resistant pen tip according to claim 1, characterized in that: The oil grooves (10) are provided with one or at least three grooves, which are provided on the ball base at intervals in the circumferential direction.

6. The novel multi-bead wear-resistant pen tip according to claim 1, characterized in that: The thickness of the ball seat mouth (5) is between 1 and 1.5 silks.

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