Anti-ink build-up highlighter
By designing a highlighter with a flat writing section and a curved pen tip holder, the problems of ink accumulation and distorted lines caused by pressure changes in traditional highlighters have been solved, achieving uniform ink output and straight lines, thus improving the quality of annotation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU TIANJIAO PEN IND
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional highlighters suffer from ink buildup and distorted straight lines due to pressure variations between the pen tip and the paper, affecting the clarity and aesthetics of annotations.
A fluorescent pen designed to prevent ink buildup features a flat writing section and a curved pen tip holder. By limiting the pen tip against the paper, it maintains stable pen pressure, prevents ink buildup, and ensures the drawing of straight lines at different tilt angles.
It achieves uniform ink dispensing, prevents ink buildup and distorted lines, and improves the clarity and aesthetics of the markings.
Smart Images
Figure CN224490464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of writing instruments, specifically to a fluorescent pen that prevents ink buildup. Background Technology
[0002] Highlighters are commonly used marking tools in daily study and office work. Their core function is to highlight text by releasing fluorescent ink from the pen tip. The structure of a traditional highlighter generally includes a pen barrel, a fiber pen tip at the front of the pen barrel, and an ink sac inside the pen barrel. The ink sac is connected to the pen tip and can continuously supply ink to the pen tip.
[0003] During use, the user applies pressure by gripping the pen barrel, causing the tip of the pen to contact the paper. Through the relative movement between the pen tip and the paper, the ink supplied by the ink cartridge is transferred and coated onto the paper using the adsorption and release properties of the fiber pen tip, forming continuous bright lines.
[0004] Because the pen tip relies on hand pressure to contact the paper, the pressure between the pen tip and the paper can vary significantly. This variation can cause ink blotting or smudging when the pen is suddenly stopped during annotation. Especially on thinner papers (such as notebooks or exam papers), accumulated ink can seep to the back of the paper, staining the page and even smudging other writing, affecting the clarity and neatness of the annotations. Furthermore, during continuous drawing of straight lines, pressure variations can easily cause the lines to become crooked or uneven. Utility Model Content
[0005] To address the aforementioned problems, this invention provides a highlighter pen that prevents ink buildup, which solves the issues of ink accumulation at the ends of marking lines and distorted straight lines caused by changes in pressure between the pen tip and the paper surface, thus improving marking quality.
[0006] This utility model discloses an anti-ink-accumulation fluorescent pen, comprising a pen barrel and a fiber pen tip disposed at the front end of the pen barrel. The pen barrel includes a pen tip holder at the front end, an ink sac disposed inside the pen barrel, and a mounting hole for the pen tip to pass through between the front and rear ends of the pen tip holder. The pen tip includes a writing part, a support part, and an ink supply connection part. The writing part has a flat structure, which allows it to cover a larger area when coated and makes it easier to deform and swing in the width direction. The support part cooperates with the pen tip holder for fixation and support. The ink supply connection part cooperates with the ink sac for connection. The mounting hole of the pen tip holder includes a front part and a rear part, with the writing part passing through the front part of the mounting hole. A gap is provided between at least one side along the width direction and the corresponding sidewall of the front part of the mounting hole, allowing the pen tip to deform and swing in the direction of that sidewall. When the pen tip moves in the opposite direction to the gap to apply the coating, the pen tip will deform and swing in the direction of the gap due to the force of the paper surface. The support part is fixed to the rear part of the mounting hole. The front end of the pen tip holder has an arc surface for contacting the paper surface. The arc surface design can improve its contact and sliding effect with the paper surface, reduce resistance, and enable good contact with the paper surface when the pen is writing at different tilt angles. The front end of the front part of the mounting hole has an opening on the arc surface, and the front end of the writing part has the opening extending outward.
[0007] When using the pen, hold the pen barrel so that the curved surface at the front of the pen tip holder and the writing tip of the pen tip are in contact with the paper. Move the pen barrel in the direction of marking. During this process, the writing tip of the pen tip is pushed by the reaction force of the paper surface to deform and swing in the opposite direction of marking, allowing the writing tip of the pen tip to coat the paper like a "brush". Due to the limiting fit between the front of the pen tip holder and the paper surface, excess force can be offset, keeping the pressure between the pen tip and the paper surface within a relatively stable range. This makes the ink flow from the pen tip more uniform, and the color of the coated lines more uniform. When the pen is suddenly stopped during marking, the pressure of the pen tip will not change too much, which can reduce ink accumulation and prevent the formation of ink blobs or smudging in the lines. In addition, because the front of the pen tip holder is rigid during marking, it can make stable contact with the paper surface, reducing line deviation when continuously drawing straight lines, making the coated lines straighter and more beautiful.
[0008] Furthermore, the front end of the pen tip holder includes a protrusion, which is a flat structure. The length and width directions of the protrusion and the writing part are consistent. The curved surface and the opening are both located at the front end of the protrusion. The flat structure of the protrusion makes it less likely to interfere with the paper when the pen is tilted, and it can intuitively indicate the orientation of the pen tip to the user, making it more convenient to use and more aesthetically pleasing.
[0009] Furthermore, the curved surface is a cylindrical surface, and when the highlighter is used to mark at different tilt angles, the cylindrical surface can maintain a stable and uniform contact with the paper surface.
[0010] Furthermore, the support portion of the pen tip is cylindrical, and the writing portion of the pen tip has flat first sidewalls on both sides along the width direction and cylindrical second sidewalls on both sides along the length direction. The second sidewalls of the writing portion and the cylindrical surfaces of the support portion are of equal diameter, coaxial, and integrally connected. The first sidewalls of the writing portion and the cylindrical surfaces of the support portion are connected by a bevel or an arc-shaped concave surface. The writing portion of the pen tip can be easily cut and shaped on a cylindrical blank, which is convenient for processing. The connection of the bevel or arc-shaped concave surface allows stress to smoothly transition from the writing portion to the support portion, enhancing the structural reliability of the pen tip and preventing damage at the connection point.
[0011] Furthermore, the pen barrel includes a rod for accommodating an ink sac and a support base connected to the front end of the rod. The pen tip holder is connected to the support base, and a through hole is provided between the front and rear ends of the support base. The rear end of the pen tip holder is inserted into the through hole of the support base. Multiple grippers are evenly distributed around the rear end of the pen tip holder, and the multiple grippers extend toward the rear end of the pen tip holder. The support part of the pen tip is located inside the multiple grippers. The inner side of the through hole includes a slope that abuts against the outer side of the multiple grippers. When the multiple grippers are inserted into the through hole, the slope constricts the multiple grippers, allowing the multiple grippers to radially grip the support part of the pen tip, thereby fixing the pen tip and preventing movement during use. Attached Figure Description
[0012] Figure 1 This is an exploded view of an embodiment of the present utility model;
[0013] Figure 2 This is a partial cross-sectional view of an embodiment of the present utility model. Figure 1 ;
[0014] Figure 3 This is a partial cross-sectional view of an embodiment of the present utility model. Figure 2 ;
[0015] Figure 4 The structure of the pen tip holder in this embodiment of the utility model Figure 1 ;
[0016] Figure 5 The structure of the pen tip holder in this embodiment of the utility model Figure 2 ;
[0017] Figure 6 This is a structural diagram of the pen tip according to an embodiment of the present utility model;
[0018] Figure 7 This is a cross-sectional view of the support base according to an embodiment of the present utility model;
[0019] Figure 8 This is a usage diagram of an embodiment of the present utility model. Detailed Implementation
[0020] Examples of the present invention's anti-ink-accumulation fluorescent pen, such as... Figure 1-8 As shown, the pen includes a pen barrel and a fiber pen tip 2 located at the front end of the pen barrel. The pen barrel includes a pen tip holder 3 located at the front end, and an ink sac 4, which is a fiber core ink sac, is located inside the pen barrel. A mounting hole for the pen tip 2 to pass through and be installed is provided between the front and rear ends of the pen tip holder 3. The pen tip 2 includes a writing part 21, a support part 22, and an ink supply connection part 23. The writing part 21 has a flat structure, which allows it to cover a larger area when coated and makes it easier to write on the wider surface. The pen tip 21 deforms and swings in a directional manner. The support part 22 and the pen tip holder 3 cooperate to fix and support it. The ink supply connection part 23 and the ink sac 4 are connected. The ink supply connection part 23 is connected to the rear end of the support part 22 and has a conical structure. It is used to insert into the ink sac 4 for ink guidance. The mounting hole of the pen tip holder 3 includes a front part 301 and a rear part 302. The writing part 21 passes through the front part 301 of the mounting hole. A gap a (e.g., ) is left between the two sides of the writing part 21 along the width direction and the corresponding sidewalls of the front part 301 of the mounting hole to allow the pen tip 2 to deform and swing. Figure 3 As shown, when the pen tip 2 moves to coat, the writing part 21 of the pen tip 2 will deform and swing due to the force of the paper surface. The gap provides space for the deformation and swing of the writing part 21. The support part 22 is fixed to the rear part 302 of the mounting hole. The front end of the pen tip holder 3 has an arc surface 311 for contact with the paper surface. The design of the arc surface 311 can improve its contact and sliding effect with the paper surface, reduce resistance, and can also make good contact with the paper surface when the pen is writing at different tilt angles. The arc surface 311 is preferably a cylindrical surface, so that it can maintain a stable and uniform contact state with the paper surface when contacting the paper surface at different tilt angles. The front end of the front part 301 of the mounting hole has an opening 3010 on the arc surface 311. The front end of the writing part 21 has the opening 3010 extending outward (e.g., Figure 4 (As shown).
[0021] refer to Figure 8 When using the pen, hold the pen barrel so that the curved surface 311 at the front end of the pen tip holder 3 and the front end of the writing part 21 of the pen tip 2 are in contact with the paper, and move the pen barrel in the marking direction (i.e., Figure 8(To the right) During this process, the writing part 21 of the pen tip 2 is pushed by the reaction force of the paper surface to deform and swing in the opposite direction to the marking direction, so that the writing part 21 of the pen tip 2 can coat the paper surface like a "brush". Due to the limiting cooperation between the front end of the pen tip holder 3 and the paper surface, excess force can be offset, keeping the pressure between the pen tip 2 and the paper surface within a relatively stable range, making the ink output of the pen tip 2 more uniform, and the color of the coated lines more uniform. When the pen is suddenly stopped during the marking process, the pressure of the pen tip 2 will not change too much, which can reduce the accumulation of ink and prevent the formation of ink blobs or smudging in the lines. In addition, since the front end of the pen tip holder 3 is rigid during the marking process, it can make stable contact with the paper surface, reducing line deviation when continuously drawing straight lines, making the coated lines straighter and more beautiful.
[0022] The front end of the pen tip holder 3 includes a protrusion 31, which is a flat structure. In this embodiment, the protrusion 31 and the writing part 21 are aligned in both length and width directions, and the width of the protrusion 31 tends to gradually narrow forward. The curved surface 311 and the opening 3010 are both located at the front end of the protrusion 31. The flat structure of the protrusion 31 makes it less likely to interfere with the paper when the pen is tilted, and it can intuitively indicate the orientation of the pen tip 2 to the user, making it more convenient to use and more aesthetically pleasing.
[0023] like Figure 6 As shown, the support portion 22 of the pen tip 2 is cylindrical. The writing portion 21 of the pen tip 2 has flat first sidewalls 211 on both sides along the width direction and cylindrical second sidewalls 212 on both sides along the length direction. The second sidewalls 212 of the writing portion 21 and the cylindrical surfaces of the support portion 22 are of equal diameter, coaxial, and integrally connected. The first sidewalls 211 of the writing portion 21 and the cylindrical surfaces 221 of the support portion 22 are connected by an arc-shaped concave surface 20. The writing portion 21 of the pen tip 2 can be easily cut and shaped from a cylindrical blank, making processing convenient. The connection of the arc-shaped concave surface 20 allows stress to smoothly transition from the writing portion 21 to the support portion 22, enhancing the structural reliability of the pen tip 2 and preventing damage at the connection point. In other embodiments, a beveled surface can also be used for connection.
[0024] The pen barrel includes a shaft 11 for accommodating an ink sac 4 and a support base 12 connected to the front end of the shaft 11. The pen tip holder 3 is connected to the support base 12. A through hole 120 is provided between the front and rear ends of the support base 12. The rear end of the pen tip holder 3 is inserted into the through hole 120 of the support base 12. Figure 5As shown, the pen tip holder 3 has multiple grippers 32 evenly distributed around its rear end. The grippers 32 extend toward the rear end of the pen tip holder 3. The support part 22 of the pen tip 2 is located inside the grippers 32. The inner side of the through hole 120 includes a slope 121 that abuts against the outer side of the grippers 32. When the grippers 32 are inserted into the through hole 120, the slope 121 tightens the grippers 32, allowing them to radially grip the support part 22 of the pen tip 2, thus fixing the pen tip 2 and preventing it from moving during use.
[0025] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.
Claims
1. A highlighter pen with anti-ink accumulation function, comprising a pen barrel and a fibrous pen tip disposed at the front end of the pen barrel, the pen barrel including a pen tip holder at the front end, an ink sac disposed inside the pen barrel, and a mounting hole for the pen tip to be inserted and installed through the front and rear ends of the pen tip holder, the pen tip including a writing part, a support part, and an ink supply connection part, the writing part having a flat structure, the support part and the pen tip holder cooperating to fix and support each other, and the ink supply connection part cooperating to connect with the ink sac, characterized in that: The pen tip holder has a mounting hole with a front and a rear. The writing part passes through the front of the mounting hole. At least one side of the writing part along the width direction and the corresponding side wall of the front of the mounting hole are provided with a gap for the pen tip to deform and swing in the direction of the side wall. The support part is fixed through and fixed to the rear of the mounting hole. The front end of the pen tip holder has an arc surface for contacting the paper surface. The front end of the front of the mounting hole has an opening on the arc surface, and the front end of the writing part extends outward from the opening.
2. The anti-ink-smudge fluorescent pen according to claim 1, characterized in that: The front end of the pen tip holder includes a protrusion, which is a flat structure. The length and width directions of the protrusion and the writing part are consistent. The arc surface and the opening are both located at the front end of the protrusion.
3. The anti-ink-smudge fluorescent pen according to claim 2, characterized in that: The curved surface is a cylindrical surface.
4. The anti-ink-smudge highlighter according to claim 1, characterized in that: The pen tip has a cylindrical support. The writing part of the pen tip has flat first sidewalls on both sides along the width direction and cylindrical second sidewalls on both sides along the length direction. The second sidewalls of the writing part and the cylindrical surface of the support part are of equal diameter, coaxial and integrally connected. The first sidewalls of the writing part and the cylindrical surface of the support part are connected by a bevel or an arc-shaped concave surface.
5. The anti-ink-smudge highlighter according to claim 1, characterized in that: The pen barrel includes a shaft for accommodating an ink sac and a support base connected to the front end of the shaft. The pen tip base is connected to the support base, and a through hole is provided between the front and rear ends of the support base. The rear end of the pen tip base is inserted into the through hole of the support base. Multiple grippers are evenly distributed around the rear end of the pen tip base, and the multiple grippers extend toward the rear end of the pen tip base. The support part of the pen tip is located inside the multiple grippers. The inner side of the through hole includes a slope that abuts against the outer side of the multiple grippers. When the multiple grippers are inserted into the through hole, they are pressed against the support part of the pen tip by the slope.