Water color pen with variable line width
By designing a combination of main and side cores in the watercolor pen, and utilizing the adjustment ring and semi-ring plate, the problems of fixed line width and unstable hand grip of the watercolor pen are solved, achieving diverse line width options and stable painting effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU WENTAI PEN IND
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-19
AI Technical Summary
Existing watercolor pens have fixed line widths, which cannot meet the diverse needs of thick and thin lines in painting, and the line width is uneven due to an unstable grip.
It adopts a pen refill assembly design, including a main refill and multiple side refills. Each side refill has a blade edge of different width at the end. Through the cooperation of the adjustment ring and the semi-ring plate, multiple line widths can be selected and stable output can be achieved.
It allows for multiple line width options, preventing line width variations caused by hand instability, making drawing more stable and versatile.
Smart Images
Figure CN224256332U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of watercolor pen technology, and more specifically to a watercolor pen with variable line width. Background Technology
[0002] Watercolor pens are one of the main tools for children's drawing. However, existing watercolor pens have fixed line widths, which cannot meet the diverse needs of drawing lines of varying thickness. Existing technology, disclosed in CN218750030U, describes a variable-width, direct-liquid, waterproof watercolor pen. This pen uses a blade and a tip, allowing the tip to contact the paper for fine lines and the edge to contact the paper for thicker lines, thus adjusting the line width as needed. However, this invention has the following problems: relying solely on a single blade limits the line width selection, and children's hands are not always stable during drawing, leading to accidental changes in contact surface and uneven line thickness. Therefore, this invention proposes a variable-width watercolor pen. Utility Model Content
[0003] The purpose of this invention is to provide a watercolor pen with variable line width, which not only offers a variety of line width options, but also prevents changes in line width due to hand instability, thus making the painting more stable.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A variable line width watercolor pen includes a pen shell, a refill assembly, an adjustment mechanism, and a locking part. The pen shell has an ink section inside and a refill outlet at the lower end. The ink section contains a refill, which extends to the outside of the refill outlet and is fixed to the refill assembly. The refill assembly includes a main refill and multiple side refills arranged around the main refill. The ends of the side refills have blades of different widths. The adjustment mechanism includes an adjustment ring fitted on the outside of the pen shell, a ring block located in an annular groove of the pen shell, a rotating ring located in a rotating groove of the pen shell, and a semi-annular plate fixed to the lower end of the rotating ring. The adjustment ring, ring block, and rotating ring are fixedly connected. The semi-annular plate surrounds the refill assembly. The locking part includes a plurality of protrusions fixed to the inner side of the adjustment ring and a plurality of protrusions fixed to the outer side of the pen shell, which are staggered and locked together.
[0006] By adopting the above technical solution, this utility model has the following advantages:
[0007] The design of this pen refill assembly allows the main refill to stand upright in contact with the paper, and different side refills to have their blades in contact with the paper, enabling drawing with various line widths and facilitating the artist's selection. The adjustment ring and semi-ring plate of this invention allow the rotation of the adjustment ring to selectively block non-target side refills, exposing only the blades of the desired side refills. This effectively prevents blade switching due to hand instability, resulting in more stable drawing.
[0008] Furthermore, there are four side cores, symmetrically distributed around the main core, and the width of the blade face of each side core is different.
[0009] By adopting the above technical solution, this utility model has the following advantages:
[0010] The symmetrically distributed side cores of this invention allow for easy selection of line width when the pen body is tilted at multiple angles, satisfying the diverse needs of drawing for lines of varying thickness.
[0011] Furthermore, the width of the lower end face of the main core is smaller than the width of the blade face of all the side cores.
[0012] By adopting the above technical solution, this utility model has the following advantages:
[0013] The design of this utility model, where the width of the lower end face of the main core is smaller than that of the blade face of the side core, allows the main core to output the finest line width when the pen is upright and in contact with the paper. This serves as the basic mode, creating different thickness contrasts with the side core and ensuring a variety of line width options.
[0014] Furthermore, the outer side of the adjusting ring is provided with several embedded grooves at equal intervals.
[0015] By adopting the above technical solution, this utility model has the following advantages:
[0016] The embedded groove in this invention increases the friction on the surface of the adjusting ring, making rotation easier during drawing.
[0017] Furthermore, the semi-ring plate has an arc-shaped structure, and the curvature of the semi-ring plate matches the distribution position of the side cores.
[0018] By adopting the above technical solution, this utility model has the following advantages:
[0019] The design of this utility model, which matches the curvature of the semi-ring plate with the distribution position of the side core, ensures that the semi-ring plate accurately covers or exposes the target side core when it rotates.
[0020] Furthermore, both protrusion one and protrusion two are hemispherical protrusions.
[0021] By adopting the above technical solution, this utility model has the following advantages:
[0022] The hemispherical protrusions of this invention effectively reduce rotational resistance. At the same time, the interlacing protrusions generate clear tactile feedback, which can lock the position of the adjustment ring and prevent the hemispherical plate from rotating or the line width from changing accidentally due to hand shaking during the drawing process.
[0023] Furthermore, the upper end of the pen shell is fixedly provided with a pen cap by a threaded connection, and the ink part is fixedly fixed inside the pen shell by a clip.
[0024] By adopting the above technical solution, this utility model has the following advantages:
[0025] The pen cap of this invention facilitates the replacement of the ink cartridge. Attached Figure Description
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0027] Figure 1 This is a front view cross-sectional structural diagram of the present invention;
[0028] Figure 2 This is a partial structural diagram of the core outlet of the pen shell of this utility model;
[0029] Figure 3 This is a top view of the cross-sectional structure at the center of the buckle part of this utility model;
[0030] Figure 4 This is a schematic diagram of the pen refill structure from below.
[0031] Reference numerals: 1. Pen casing; 101. Lead outlet; 102. Annular groove; 103. Rotating groove; 2. Adjusting ring; 201. Inset groove; 3. Side lead; 301. Blade surface; 4. Pen cap; 5. Rotating ring; 6. Clamping plate; 7. Semi-ring plate; 8. Main lead; 9. Ink section; 10. Lead; 11. Ring block; 12. Protrusion one; 13. Protrusion two. Detailed Implementation
[0032] like Figures 1 to 3As shown in this specific embodiment, a watercolor pen with variable line width includes a pen shell 1, a pen core assembly, an adjustment mechanism, and a locking part. The pen shell 1 has an ink part 9 inside and a core outlet 101 at the lower end. The ink part 9 has a pen core 10 inside and the pen core 10 extends to the outside of the core outlet 101 and is fixed to the pen core assembly. The pen core assembly includes a main core 8 and a plurality of side cores 3 arranged around the main core 8. The ends of the side cores 3 are provided with blade surfaces 301 of different widths. The adjustment mechanism includes an adjustment ring 2 sleeved on the outside of the pen shell 1, a ring block 11 located in the annular groove 102 of the pen shell 1, a rotating ring 5 located in the rotating groove 103 of the pen shell 1, and a semi-annular plate 7 fixed to the lower end of the rotating ring 5. The adjustment ring 2, the ring block 11, and the rotating ring 5 are fixedly connected. The semi-annular plate 7 surrounds the pen core assembly. The locking part includes a plurality of protrusions 12 fixed around the inner side of the adjustment ring 2 and a plurality of protrusions 13 fixed around the outer side of the pen shell 1. The two are interlocked and locked.
[0033] Through the above settings, the pen refill assembly of this utility model allows the main refill 8 to stand upright in contact with the paper, and different side refills 3 to have their blade surfaces 301 in contact with the paper, enabling drawing with various line widths and facilitating the artist's selection. The adjustment ring 2 and the semi-ring plate 7 of this utility model allow the rotation of the adjustment ring 2 to selectively block non-target side refills 3, exposing only the blade surfaces 301 of the side refills 3 that need to be used. This effectively prevents the blade surfaces 301 from switching due to hand instability, making the drawing more stable.
[0034] like Figures 1 to 4 As shown, there are four side cores 3, which are symmetrically distributed around the main core 8. The width of the blade surface 301 of each side core 3 is different. The width of the lower end face of the main core 8 is smaller than the width of the blade surface 301 of the side core 3. Several embedded grooves 201 are provided at equal intervals on the outer side of the adjusting ring 2. The semi-ring plate 7 is an arc-shaped structure, and the arc of the semi-ring plate 7 matches the distribution position of the side cores 3. Protrusion 12 and protrusion 23 are hemispherical protrusions. The upper end of the pen shell 1 is fixedly provided with a pen cap 4 by a threaded connection, and the ink part 9 is fixedly fixed in the pen shell 1 by a clamping plate 6.
[0035] Through the above settings, the symmetrically distributed side cores 3 of this invention facilitate the selection of line width by tilting the pen body at multiple angles, meeting the diverse needs of drawing for lines of varying thickness. The setting that the lower end face width of the main core 8 is smaller than the blade surface 301 of the side cores 3 ensures that when the pen body is upright, the main core 8 can output the finest line width when in contact with the paper, serving as a basic mode and creating different thickness contrasts with the side cores 3, guaranteeing the selection of multiple line widths. The embedded groove 201 of this invention increases the friction on the surface of the adjusting ring 2, facilitating rotational operation during drawing. The setting that matches the curvature of the semi-ring plate 7 with the distribution position of the side cores 3 ensures that the semi-ring plate 7 accurately covers or exposes the target side core 3 when rotating. The hemispherical protrusions of this invention effectively reduce rotational resistance and, through the interlacing protrusions, generate clear tactile feedback, enabling the locking of the adjusting ring 2 position and preventing the semi-ring plate 7 from rotating or the line width from accidentally switching due to hand movement during drawing. The pen cap 4 of this invention facilitates the replacement of the ink unit 9.
[0036] Working principle: When in use, the adjusting ring 2 can be rotated as needed, which drives the rotating ring 5 to rotate through the inner ring block 11. The semi-ring plate 7 at the lower end of the rotating ring 5 rotates accordingly, selectively blocking or exposing the blade surface 301 of the side core 3 of the required width. When drawing, the pen body can be tilted so that the blade surface 301 of the exposed side core 3 contacts the paper to draw the required line width. By uprighting the pen body, the lower end of the main core 8 can contact the paper, and the drawn line width is the base line width.
[0037] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. A watercolor pen with variable line width, characterized in that, The pen includes a pen casing (1), a pen refill assembly, an adjustment mechanism, and a locking part. The pen casing (1) has an ink section (9) inside and a refill outlet (101) at the lower end. The ink section (9) has a pen refill (10) inside. The pen refill (10) extends to the outside of the refill outlet (101) and is fixed to the pen refill assembly. The pen refill assembly includes a main refill (8) and multiple side refills (3) arranged around the main refill (8). The ends of the side refills (3) are provided with blades (301) of different widths. The adjustment mechanism includes an adjustment mechanism sleeved on the outside of the pen casing (1). The ring (2), the ring block (11) located in the annular groove (102) of the pen shell (1), the rotating ring (5) located in the rotating groove (103) of the pen shell (1), and the semi-annular plate (7) fixed to the lower end of the rotating ring (5) are fixedly connected. The semi-annular plate (7) surrounds the pen core assembly. The buckling part includes a number of protrusions one (12) fixed inside the adjusting ring (2) and a number of protrusions two (13) fixed outside the pen shell (1), which are interlocked.
2. A watercolor pen with variable line width according to claim 1, characterized in that, There are four side cores (3), which are symmetrically distributed around the main core (8), and the width of the blade surface (301) of each side core (3) is different.
3. A watercolor pen with variable line width according to claim 2, characterized in that, The width of the lower end face of the main core (8) is less than the width of the blade face (301) of all the side cores (3).
4. A watercolor pen with variable line width according to claim 1, characterized in that, The adjusting ring (2) has several embedded grooves (201) at equal intervals on its outer side.
5. A watercolor pen with variable line width according to claim 1, characterized in that, The semi-ring plate (7) has an arc-shaped structure, and the arc of the semi-ring plate (7) matches the distribution position of the side core (3).
6. A watercolor pen with variable line width according to claim 1, characterized in that, The first protrusion (12) and the second protrusion (13) are hemispherical protrusions.
7. A watercolor pen with variable line width according to claim 1, characterized in that, The upper end of the pen shell (1) is fixedly provided with a pen cap (4) by a threaded connection, and the ink part (9) is fixedly attached to the pen shell (1) by a clamping plate (6).