Anti-deviation pen point spring
By designing a concave arc contact surface and a low-friction coating in the pen tip spring, the problems of deviation and jamming caused by high friction in traditional pen tip springs are solved, achieving the effects of preventing deviation and reducing friction, thus improving the stability and service life of the pen tip.
Patent Information
- Application Number
- CN202520010661.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2035-01-03
AI Technical Summary
The ball bearing and contact surface of a traditional pen tip spring are planar structures, which leads to high friction and easy displacement, resulting in problems such as pen tip leakage, jamming, and abnormal noise.
Design a pen tip spring to prevent deviation, using a concave arc contact surface coated with a low-friction coating to increase the contact area and reduce the coefficient of friction. The spring includes a spring body, a mounting base, a ball contact rod, and an abutment part. The abutment part has a concave contact surface coated with polytetrafluoroethylene or Teflon.
It effectively prevents ball bearing misalignment, reduces the coefficient of friction, avoids ink leakage and jamming at the pen tip, and improves stability and lifespan.
Smart Images
Figure CN223498519U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pen tip spring technology, and in particular to a pen tip spring that prevents deviation. Background Technology
[0002] Currently, the nibs of ballpoint pens, gel pens, etc., consist of a ball base, a ball bearing, and a spring. In traditional systems, the contact surface between the spring and the ball bearing is flat. When the ball bearing rolls, due to the flat structure of the contact surface, there is significant friction between the ball bearing and the contact surface. The contact surface of the spring is prone to misalignment with the ball bearing, leading to problems such as ink leakage, writing jams, and abnormal noises. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution to be introduced below was developed in this context. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of the traditional pen tip spring design and to provide a product that prevents deviation and reduces the coefficient of friction.
[0004] To solve the above problems, the present invention adopts the following technical solution.
[0005] A pen tip spring for preventing deviation includes a spring body, one end of which is provided with a mounting base, and the other end of which is provided with a ball contact rod. The ball contact rod is provided with an abutment portion, the abutment portion is provided with a concave contact surface, and the surface of the contact surface is provided with a low-friction coating.
[0006] Preferably, the contact surface is shaped to fit the curved surface of the ball.
[0007] Preferably, the diameter of the contact portion is larger than the diameter of the ball contact rod.
[0008] Preferably, the material of the low-friction coating is a polytetrafluoroethylene coating or a Teflon coating.
[0009] Beneficial effects:
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] This invention increases the contact area with the ball bearing by using a concave contact surface, preventing the ball bearing contact rod from shifting off the axis of the ball bearing. Furthermore, a low-friction coating reduces the coefficient of friction between the contact surface and the ball bearing. Through the above design, problems such as ink leakage, writing jamming, and abnormal noises are avoided, giving the product the advantages of preventing shifting and reducing the coefficient of friction. Attached Figure Description
[0012] Figure 1 This is a partial cross-sectional view of the main view of a pen tip spring for preventing deviation according to this utility model;
[0013] Figure 2 This utility model Figure 1 A magnified view (A) of a pen tip spring designed to prevent tip slippage;
[0014] Figure 3 This is a left view of a pen tip spring for preventing deviation according to this utility model;
[0015] The correspondence between the labels and component names in the attached figures is as follows:
[0016] Reference numerals: 1. Spring body; 2. Mounting base; 3. Ball contact rod; 4. Abutment part; 5. Contact surface; 6. Low-friction coating. Detailed Implementation
[0017] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, 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 protection scope of this utility model.
[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0020] Reference example Figures 1 to 3 A pen tip spring for preventing deviation includes a spring body 1, a mounting base 2 at one end of the spring body 1, and a ball contact rod 3 at the other end of the spring body 1. The ball contact rod 3 has an abutment part 4, and the abutment part 4 has a concave contact surface 5. The surface of the contact surface 5 is coated with a low-friction coating 6. By increasing the contact area with the ball through the concave contact surface 5, the ball contact rod 3 is prevented from deviating from the axis of the ball. Furthermore, the low-friction coating 6 reduces the coefficient of friction between the abutment surface and the ball. The above design avoids problems such as pen tip leakage, writing jamming, and abnormal noise.
[0021] It is worth mentioning that the contact surface 5 is designed to fit the ball's arc surface, which further reduces the coefficient of friction between the contact surface 5 and the ball.
[0022] It is worth mentioning that the diameter of the contact part 4 is larger than the diameter of the ball contact rod 3. The contact part 4 increases the contact area between the contact surface 5 and the ball, further reducing the offset of the ball contact rod 3.
[0023] It is worth mentioning that the low-friction coating 6 is made of polytetrafluoroethylene (PTFE) or Teflon. Both PTFE and Teflon coatings have low coefficients of friction and are resistant to corrosion from various chemicals such as acids, alkalis, and salts, effectively improving the service life of the contact part 4.
[0024] The above design scheme enables the product to achieve advantages such as good safety, good stability, and good heat dissipation.
[0025] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.
Claims
1. A pen tip spring for preventing deviation, comprising a spring body (1), one end of the spring body (1) being provided with a mounting base (2), and the other end of the spring body (1) being provided with a ball contact rod (3), characterized in that: The ball contact rod (3) is provided with an abutment part (4), the abutment part (4) is provided with a concave contact surface (5), and the surface of the contact surface (5) is provided with a low friction coating (6).
2. The anti-deviation pen tip spring according to claim 1, characterized in that: The shape of the contact surface (5) is set to fit the arc surface of the ball.
3. The anti-deviation pen tip spring according to claim 1, characterized in that: The diameter of the contact part (4) is larger than the diameter of the ball contact rod (3).
4. The anti-deviation pen tip spring according to claim 1, characterized in that: The material of the low-friction coating (6) is set as a polytetrafluoroethylene coating or a Teflon coating.