Pen point with high structural strength

Abstract

The utility model provides a pen point with high structural strength, which comprises a pen point body, at least one strip-shaped groove is arranged on the outer side surface of the pen point body and extends along the axial direction, and the number of the strip-shaped groove can be set as required. The depth and the width of the groove are gradually reduced from the middle to the two ends, the groove can be linear or spiral, and the groove is formed in the front end of the pen point body. An ink channel penetrating through the two axial ends is formed in the pen point body, a protruding ball seat part is arranged on the inner side wall of the front end, a ball is connected to the front side of the ball seat part, and the front end is further contracted inwards to form a closed part. According to the design, stress distribution of the pen point is changed through the unique groove structure, the capacity of resisting axial impact force is enhanced, meanwhile, stable ink supply and accurate writing are guaranteed through cooperation of internal structures, the pen point is suitable for various writing scenes, the service life of the pen point can be effectively prolonged, and writing experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of pen tip technology, specifically to a pen tip with high structural strength. Background Technology

[0002] In the field of writing instruments, the pen tip is a key component, and its performance directly affects the writing experience and lifespan. As people's demands for writing smoothness and stability continue to increase, various innovative pen tip designs have emerged.

[0003] The prior art, patent application number CN202322614589.1, discloses a spring-loaded double ballpoint pen tip.

[0004] refer to Figure 1 As shown, it has a tubular pen tip with a ball at the front end and a spring and ink core at the rear end to hold the ball in place.

[0005] The pen tip has a circular cross-section and a thin wall thickness. When subjected to a large axial impact force, the pen tip may deform, bend, or even break due to the mechanical properties of the circular structure itself and the thin wall thickness. Summary of the Invention

[0006] In view of the problems pointed out in the background art, this utility model proposes a pen tip with high structural strength to solve the above-mentioned technical problems.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A high-strength pen tip includes a pen tip body, wherein a groove is provided on the outer side of the pen tip body. The groove is elongated and extends along the axial direction of the pen tip body, and at least one groove is provided.

[0009] The present invention is further configured such that the groove has three grooves and is spaced apart circumferentially on the pen tip body.

[0010] The present invention is further configured such that the depth of the groove gradually decreases from the middle to both ends.

[0011] The present invention is further configured such that the width of the groove gradually decreases from the middle to both ends.

[0012] The present invention is further configured such that the groove is located at the front end of the pen tip body.

[0013] The present invention is further configured such that the groove is a straight line structure.

[0014] The present invention is further configured such that the groove has a spiral structure.

[0015] The present invention is further configured such that the pen tip body is provided with an ink channel passing through both ends of its axial direction, the inner wall of the front end of the pen tip body is provided with a protruding ball seat, the front side of the ball seat is connected with a ball, and the front end of the pen tip body converges inward to form a closed part.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0017] The high-strength pen tip provided by this invention features a unique groove 2 design that acts as a stable "guardian" for the pen tip. Its depth and width gradually decrease from the middle to both ends and are located at the front end of the pen tip body 1. When the pen tip encounters axial impact force, such as if accidentally dropped or pressed forcefully, the concentrated impact force at the front end can be effectively absorbed and dispersed by the groove. The middle part of the groove is deeper and wider, acting like a strong buffer zone, blocking most of the impact energy. Residual stress is smoothly dispersed towards the rear end of the pen tip along the gradually changing groove, greatly enhancing the pen tip's resistance to deformation and breakage, ensuring smooth and uninterrupted writing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the existing technology.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model.

[0021] Figure 3 A cross-sectional view of this utility model Figure 1 .

[0022] Figure 4 A cross-sectional view of this utility model Figure 2 .

[0023] The following diagrams are labeled as follows: 1. Pen tip body; 2. Groove; 3. Ink channel; 4. Ball seat; 5. Ball; 6. Sealing part. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] For reference as follows Figures 1-4 The present invention will be described as follows:

[0026] Example: This application focuses on the pen tip, a key writing component, in which the pen tip body 1 constitutes the basic architecture of the entire design. It bears the important mission of containing ink, guiding the smooth flow of ink, and directly contacting the writing medium to achieve the writing trajectory. In traditional pen tip design concepts, the pen tip body often adopts a simple circular cross-section structure. While this structure is relatively simple to manufacture, it reveals insufficient structural strength when facing complex external forces, especially under axial impact forces, which may cause deformation, bending, or even breakage, affecting the pen tip's lifespan and writing stability.

[0027] To overcome the aforementioned challenges, this invention introduces a highly targeted design: a pen tip with high structural strength, comprising a pen tip body 1. A groove 2 is provided on the outer surface of the pen tip body 1. The groove 2 is elongated and extends along the axial direction of the pen tip body 1. The shape of the groove 2 is determined to be elongated, a shape choice that closely conforms to the mechanical characteristics required by the pen tip body 1. The elongated grooves can be distributed continuously and orderly along the axial direction of the pen tip body 1, much like constructing "reinforcing ribs" on the outer wall of the pen tip body 1, only presented in the form of grooves.

[0028] The pen tip body 1 has three grooves spaced circumferentially. This circumferential spacing achieves a balanced distribution of mechanical properties. When the pen tip is subjected to an axial impact force, the stress state of the material around each groove changes due to the presence of the groove, dispersing the stress that was originally concentrated in one area to the surrounding area. For example, when an impact force acts on the tip, the force is transmitted axially backward. At this time, the three spaced grooves guide the stress to diffuse circumferentially, preventing excessive stress accumulation at a single point and effectively preventing localized excessive deformation or breakage of the pen tip.

[0029] The reason this groove design significantly enhances the structural strength of the pen tip body 1 lies in altering the stress distribution pattern of the pen tip. Before the groove was added, the annular pen tip exhibited a relatively concentrated and uneven distribution of internal stress when subjected to axial force, with weaker areas easily reaching the material's yield limit first. However, by adding the groove, on the one hand, the groove itself effectively removes some material, seemingly weakening the overall mass of the pen tip; on the other hand, it cleverly adjusts the stress flow, causing the stress to redistribute along the groove's boundary and the transition area between the groove and adjacent solid parts when encountering the groove.

[0030] On the other hand, the grooves and the grooves themselves, along with other parts of the outer wall of the pen tip, form a mutually supportive and synergistic force-bearing relationship. During the dynamic process of withstanding axial impact force, the material around the three grooves bears a portion of the impact force, and through the circumferentially spaced layout, the stress transfer between them is more efficient and balanced. This transforms the concentrated impact force that could have damaged the pen tip into a dispersed force that is synergistically supported by multiple areas, comprehensively improving the pen tip body 1's ability to resist axial impact force and providing a solid guarantee for the stability of the pen tip during writing.

[0031] In the innovative design of the pen tip structure, the setting of groove 2 is a key element in improving the overall performance of the pen tip. At least one groove 2 is provided, which lays the most basic foundation for the improvement of the pen tip design. When only one groove is provided, it opens up a unique "stress guiding channel" on the outer surface of the pen tip body 1.

[0032] From a mechanical perspective, under axial impact force, this groove can guide the stress to a certain extent to disperse along its axial extension direction. For example, when the pen tip is accidentally dropped and hits the ground, the impact force is transmitted from the front of the pen tip. Without the groove, the stress concentration may quickly cause the pen tip to bend; however, with this groove, some of the stress will diffuse backward along the long strip shape of the groove, which alleviates the instantaneous pressure peak experienced by the pen tip locally. This enhances the pen tip's ability to resist axial impact to a certain extent and maintains the initial writing guidance of the pen tip.

[0033] Even more ingenious is the fact that the number of grooves 2 can be freely selected as needed. This feature gives the pen tip design a high degree of adaptability and specificity, meeting the diverse needs of different scenarios and user groups. For scenarios where pen tip strength requirements are relatively low, such as those mainly used for everyday writing with relatively light writing pressure, a smaller number of grooves can be selected, such as one or two grooves. This achieves a certain degree of structural reinforcement, preventing damage to the pen tip from occasional minor impacts, while maintaining a relatively simple pen tip manufacturing process and reducing manufacturing costs while ensuring smooth writing.

[0034] In professional fields such as industrial marking and graphic design, writing instruments are subjected to frequent and forceful use, placing extremely high demands on the strength of the pen tip. In such cases, the number of grooves 2 can be appropriately increased, for example, five or more. Multiple grooves are distributed circumferentially around the pen tip body 1, forming a kind of "grid-like" mechanical support system. When encountering high-intensity axial impact forces, the grooves work together, and stress can be quickly and efficiently dispersed and transmitted between the numerous grooves and the pen tip body areas they separate. This greatly enhances the rigidity and toughness of the pen tip body 1, ensuring that the pen tip can still work stably under extreme conditions, accurately outputting the writing trajectory and meeting the stringent usage standards of professionals.

[0035] This flexible design with selectable groove numbers not only expands the application range of the pen tip, covering diverse fields from daily office work to professional fine writing, but also deeply optimizes the performance depth of the pen tip, allowing users to customize a pen tip with the best strength performance according to their actual needs, injecting vitality into the technological innovation of the writing instrument field.

[0036] The depth of groove 2 gradually decreases from the middle to both ends. When the pen tip is subjected to axial impact force, the impact force is most concentrated at the front end of the pen tip. The middle part of the groove is deeper, which is like placing a strong "buffer trap" in the critical stress area. It can preferentially absorb and disperse a large proportion of the impact force, effectively preventing stress from accumulating at the front end of the pen tip and causing breakage. As it transitions towards both ends, the groove depth gradually decreases. On the one hand, this avoids excessively weakening the overall structural strength of the pen tip. On the other hand, it guides the residual stress to be smoothly dispersed to the rear end of the pen tip, ensuring that the entire pen tip is subjected to balanced force and maintains a stable structural shape.

[0037] The width of groove 2 gradually decreases from the middle to both ends. In the initial stage of impact, the wider middle part of the groove provides ample space for stress release, allowing stress to diffuse rapidly, much like widening a "flood discharge channel" to alleviate the high pressure at the front end. The gradually narrowing width extends to both ends of the pen tip, cleverly and precisely guiding the dispersed stress to the main structure of the pen tip, achieving a seamless transition from buffering to stable support, and further enhancing the pen tip's toughness against axial impact.

[0038] The groove 2 is located at the front end of the pen tip body 1. It is precisely focused on the area where the force is most frequent and concentrated during writing. Due to the frequent friction and collision between the pen tip and the paper surface during daily writing, drawing, and other operations, the front end of the pen tip is a "disaster area" for external impact. Placing the groove here is like putting a "protective armor" on the front end of the pen tip, specifically strengthening the area's ability to resist external forces, greatly extending the life of the pen tip, and ensuring that the smoothness of writing is not affected by damage to the front end.

[0039] The groove 2 is available in two shapes: a straight line and a spiral, providing customized solutions for different needs. The straight groove, with its simple and clear design, efficiently transmits and disperses stress in the axial direction, suitable for regular writing scenarios. It ensures smooth writing while improving the strength of the pen tip structure at a lower manufacturing cost. The spiral groove introduces a new mechanical model. It spirals upwards around the front of the pen tip. When encountering axial impact forces, it not only disperses stress axially but also uses the spiral structure to convert some stress into circumferential restraining force, ensuring the pen tip remains rock-solid even under multi-angle stress.

[0040] The pen tip body 1 is provided with an ink channel 3 that runs through both ends of its axis. The inner side wall of the front end of the pen tip body 1 is provided with a protruding ball seat 4. A ball 5 is connected to the front side of the ball seat 4. The front end of the pen tip body 1 is constricted inward to form a closed part 6.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pen tip with high structural strength, comprising a pen tip body, characterized in that: The outer surface of the pen tip body is provided with a groove, which is elongated and extends along the axial direction of the pen tip body, and at least one groove is provided.

2. The pen tip with high structural strength according to claim 1, characterized in that: The groove has three grooves that are spaced apart around the circumference of the pen tip body.

3. The pen tip with high structural strength according to claim 1, characterized in that: The depth of the groove gradually decreases from the middle to both ends.

4. A pen tip with high structural strength according to claim 3, characterized in that: The width of the groove gradually decreases from the middle to both ends.

5. A pen tip with high structural strength according to claim 1, characterized in that: The groove is located at the front end of the pen tip body.

6. A pen tip with high structural strength according to claim 1, characterized in that: The groove is a straight line structure.

7. A pen tip with high structural strength according to claim 1, characterized in that: The groove has a spiral structure.

8. A pen tip with high structural strength according to claim 1, characterized in that: The pen tip body is provided with ink channels running through both ends of its axis. The inner wall of the front end of the pen tip body is provided with a protruding ball seat. A ball is connected to the front side of the ball seat. The front end of the pen tip body converges inward to form a closed part.

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