Direct liquid type drawing pen structure

Abstract

The utility model discloses a direct liquid style painting pen structure, including pen point, ink cartridge, ink lead portion, pen body portion and rocking bead, the pen point portion includes nib joint and the nylon nib tip that clamps the nib joint inner side, ink cartridge, ink lead portion and rocking bead all are located the inner side of pen body portion, and the nib joint is located on the inner side of pen body portion. One end of the ink guiding part is communicated with the ink cylinder, the ink guiding part comprises a water storage device and an ink guiding core, a first air return channel and a second air return channel are formed in the two sides of the water storage device respectively, mounting holes in clearance fit with the ink guiding core are formed in the center of the fixing part and the center of the water storage device, and the ink guiding core penetrates through the mounting holes. The upper end of the ink leading core is fixedly connected with the pen point connector; the ink guiding core can be effectively limited and fixed, the situation that the ink guiding core loosens and is separated from a pen point and ink is cut off in the ink guiding area due to the fact that a pen product vibrates and falls in the transportation process is effectively prevented, the ink guiding core is protected from being impacted and damaged by the shaking bead, ink outlet is more stable, and writing is smoother.

Description

Technical Field

[0001] This utility model relates to the field of pen technology, and more specifically to a direct-liquid drawing pen structure. Background Technology

[0002] The tip of a direct-liquid soft-tip drawing pen is made of polymer materials such as plastic and fiber. The tip is elastic; when writing, the friction between the tip and the paper generates vibration, and external air pressure flows into the pen through the vent of the ink reservoir. Driven by the internal air pressure, the ink is drawn out from the micropores of the ink core, producing smooth lines. It is primarily used for drawing and sketching.

[0003] The existing conventional direct-liquid soft-tip drawing pen structure, for the need for quick installation, has one end of the ink cartridge directly inserted into the ink cartridge and directly connected to the water reservoir, with a transition fit with the water reservoir, as shown in the attached diagram in the instruction manual. Figure 1 The existing technology shown includes an ink cartridge 1', a water reservoir 2', an ink core 3', and a pen tip body 4'. The water reservoir 2' is installed inside the ink cartridge 1' and has a through hole 5' for the ink core 3' to pass through. One end of the ink core 3' abuts against the tail end of the pen tip body 4', and the other end is connected to the ink cartridge 1'. The water reservoir 2' and the ink core 3' are tightly fitted together. Ink is drawn only through the section where the ink core contacts the ink, resulting in less ink being drawn, which leads to uneven writing. In addition, the ink core is only inserted and fixed in the water reservoir, making it difficult to position. Normal shaking during transportation and ordinary drops and rolling can cause the ink core to shift and separate from the pen tip or ink cartridge, resulting in a situation where ink cannot be drawn and writing is impossible. If the fit is too tight, the ink flow and air return can be blocked or the micropores of the ink core can be squeezed, resulting in fatal problems such as no ink or poor ink flow. Therefore, this application proposes a direct-liquid drawing pen structure. Utility Model Content

[0004] The purpose of this invention is to provide a direct-liquid drawing pen structure that can effectively limit and fix the ink core, effectively prevent the ink core from loosening and detaching from the pen tip and ink-drawing area during transportation vibration and drops, thus preventing ink interruption, and protect the ink core from damage caused by the ball bearing, resulting in more stable ink output and smoother writing.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A direct-liquid drawing pen structure includes a pen head, an ink cartridge, an ink-drawing section, a pen body, and a ball bearing. The pen head includes a pen tip connector and a nylon pen tip fitted inside the pen tip connector. A vent groove is provided at the lower end of the pen tip connector corresponding to the position of the nylon pen tip. The ink cartridge, the ink-drawing section, and the ball bearing are all located inside the pen body. The ball bearing is disposed inside the ink cartridge. One end of the ink-drawing section communicates with the ink cartridge. The ink-drawing section includes a water reservoir and an ink core. The water reservoir is integrally composed of three water reservoir tubes: a first water reservoir tube, a second water reservoir tube, and a third water reservoir tube. Air return channels one and two are provided on both sides of the water reservoir. A vent hole is provided on one side of the first air return channel. A fixing part is fixedly provided at the upper end of the water reservoir. The fixing part and the center of the water reservoir are provided with mounting holes that fit with the ink core. The ink core passes through the mounting holes. The ink core includes a middle end and a pointed head integrally formed with both sides of the middle end. The diameter of the middle end is larger than the diameter of the pointed head. The mounting holes consist of hole one, hole two, hole three and hole four from top to bottom. Hole one corresponds to the pointed head at the upper end. The diameter of hole one is larger than the diameter of the pointed head. Hole two corresponds to the upper end of the middle end. The diameter of hole two is larger than the diameter of the middle end. One side of hole two is connected to the corresponding air return channel one through a vent hole. Hole three matches the lower end of the middle end. Hole four matches the pointed head at the lower end. The upper end of the ink core is fixedly connected to the pen tip connector.

[0007] By adopting the above technical solution, this utility model has the following advantages:

[0008] The design of the middle and tip of the ink core in this invention provides protruding bosses on both sides. The lower end of each boss is engaged with the lower end of hole three, which serves to limit the ink core's movement. The matching of hole three with the middle of the ink core effectively prevents displacement, thus preventing the ink core from contacting the bead and protecting it from impact damage. This results in more stable ink output and smoother writing. Furthermore, the design of the vent hole, hole two (larger than the middle end), and hole one (larger than the tip) allows ink to enter the connecting channel through the return air channel one, and then into holes two and one. This increases the ink absorption area of ​​the ink core, thereby increasing the amount of ink drawn. Additionally, the larger diameter of hole one (larger than the tip) prevents the micropores at the ink outlet of the ink core from becoming clogged, further ensuring more stable ink output and smoother writing.

[0009] Furthermore, the thin sheets of the first water storage pipe are sparse and of different thicknesses, the thin sheets of the second water storage pipe are uniform and dense, and the thin sheets of the third water storage pipe have the same spacing but different thicknesses.

[0010] By adopting the above technical solution, this utility model has the following advantages:

[0011] This utility model features a water storage tube with sparsely spaced thin sheets of varying thicknesses. This eliminates and regulates the air pressure in the upper part of the water storage unit and the vacuum in the ink cartridge, allowing ink to flow smoothly. The thin sheets are also roughened and hydrophilic, allowing the flowing ink to be absorbed onto their surface for ink storage and to regulate the ink output. The second water storage tube has uniformly dense thin sheets, enabling bidirectional regulation of the air pressure entering the ink cartridge and the first water storage tube from the outside. The dense sheets, with their roughened and hydrophilic surfaces, absorb and store ink, balancing internal and external pressures to ensure continuous and stable ink flow and allowing excess ink to return to the ink cartridge. The third water storage tube has thin sheets of varying thicknesses with the same spacing. These sheets are also roughened and hydrophilic to absorb and store ink and buffer the ink flow. The combination of these three types of sheets reduces ink spillage caused by the shaking and vibration of the beaded roller, while simultaneously regulating the internal air pressure of the ink cartridge.

[0012] Furthermore, the pointed ends at both ends of the ink core are symmetrical and equal, and an inner ring step is provided at the lower end of the mounting hole. The lower outer side of the middle end of the ink core abuts against the inner ring step.

[0013] By adopting the above technical solution, this utility model has the following advantages:

[0014] The symmetrical and equal arrangement of the pointed ends of this invention allows the ink core to be assembled in any direction within the water reservoir, making installation more convenient.

[0015] Furthermore, the ventilation slot, the first return air channel, the second return air channel, and the ventilation hole form a complete closed-loop return air passage.

[0016] By adopting the above technical solution, this utility model has the following advantages:

[0017] The complete closed-loop air return path of this invention provides better visibility into the ink storage and pressure regulation, enabling smoother ink output.

[0018] Furthermore, ink-drawing grooves are provided on both sides of the water storage pipe three, which are connected to the hole four.

[0019] By adopting the above technical solution, this utility model has the following advantages:

[0020] The ink-drawing groove of this invention allows ink from the ink cartridge to flow into the ink-drawing groove, thereby increasing the contact area between the bottom of the ink-drawing core and the ink, resulting in more uniform ink absorption and smoother writing.

[0021] Furthermore, the return air channel is connected to one side of the corresponding ink trough.

[0022] By adopting the above technical solution, this utility model has the following advantages:

[0023] The above-mentioned design of this utility model allows more ink to be added into the air return channel, and the ink is introduced into the water storage tubes 1 and 2 for storage, preventing ink interruption and making the ink output more stable and the writing smoother.

[0024] Furthermore, the fixing part of the water storage pipe is surrounded by a retaining ring, and the venting groove is provided with an inner recess corresponding to the position of the retaining ring. The fixing part is inserted into the venting groove and fixedly connected by the retaining ring in the corresponding inner recess.

[0025] By adopting the above technical solution, this utility model has the following advantages:

[0026] The design of the retaining ring and the recessed part of this utility model allows the water reservoir to be quickly installed and fixed to the pen tip. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of an exploded structure using existing technology.

[0029] Figure 2 This is a schematic diagram of the structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the ink-drawing part and pen head structure of this utility model;

[0031] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure at the center of the right-hand view;

[0032] Figure 5 This is a schematic diagram of the ink core structure of this utility model;

[0033] Figure 6 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0034] Figure 7 This is a schematic diagram of the two gas return channels of the water storage device of this utility model;

[0035] Figure 8 This is a schematic diagram of one section of the air return channel of the water storage device of this utility model.

[0036] Reference numerals: 1. Ink core; 101. Middle end; 102. Tip; 2. Mounting hole; 201. Hole 1; 202. Hole 2; 203. Hole 3; 204. Hole 4; 3. Water storage tube 1; 4. Water storage tube 2; 5. Water storage tube 3; 501. Ink groove; 6. Air return channel 1; 601. Vent hole; 7. Air return channel 2; 8. Fixing part; 801. Clamping ring part; 9. Concave part; 10. Nylon pen tip; 11. Inner ring step; 12. Pen body; 13. Pen tip connector; 14. Vent groove. Detailed Implementation

[0037] like Figures 2 to 6 As shown in this specific embodiment, a direct-liquid drawing pen structure includes a pen head, an ink cartridge, an ink-drawing section, a pen body 12, and a ball bearing. The pen head includes a pen tip connector 13 and a nylon pen tip 10 that is locked inside the pen tip connector 13. A vent groove 14 is provided at the lower end of the pen tip connector 13 corresponding to the position of the nylon pen tip 10. The ink cartridge, ink-drawing section, and ball bearing are all located inside the pen body 12. The ball bearing is located inside the ink cartridge. One end of the ink-drawing section is connected to the ink cartridge. The ink-drawing section includes a water reservoir and an ink-drawing core 1. The water reservoir is integrally composed of a water storage pipe 3, a water storage pipe 4, and a water storage pipe 5. A return air channel 6 and a return air channel 7 are respectively provided on both sides of the water reservoir. A vent hole 601 is provided on one side of the return air channel 6. A fixing part 8 is fixedly provided at the upper end of the water reservoir. The fixing part 8 and the center of the water reservoir are connected to the ink-drawing core 1. The ink core 1 has a clearance fit with the mounting hole 2, through which the ink core 1 passes. The ink core 1 includes a middle end 101 and a pointed head 102 integrally formed with both sides of the middle end 101. The diameter of the middle end 101 is larger than the diameter of the pointed head 102. The mounting hole 2 consists of hole one 201, hole two 202, hole three 203 and hole four 204 from top to bottom. Hole one 201 corresponds to the upper pointed head 102, and the diameter of hole one 201 is larger than the diameter of the pointed head 102. Hole two 202 corresponds to the upper end of the middle end 101, and the diameter of hole two 202 is larger than the diameter of the middle end 101. One side of hole two 202 is connected to the corresponding air return channel one 6 through a vent hole 601. Hole three 203 matches the lower end of the middle end 101. Hole four 204 matches the lower pointed head 102. The upper end of the ink core 1 is fixedly connected to the pen tip connector 13.

[0038] Through the above settings, the middle end 101 and the tip 102 of the ink core 1 of this utility model provide protruding bosses on both sides of the ink core 1. The lower end of the bosses is engaged with the lower end of the third hole 203, which can limit the ink core 1. With the third hole 203 matching the middle end 101 of the ink core 1, the displacement of the ink core 1 can be effectively prevented, so that the ink core 1 does not come into contact with the bead, thus protecting the ink core 1 from impact damage, thereby making the ink output more stable and the writing smoother. The ventilation hole 601 and the second hole 202 of this utility model are larger than the middle end 101 and the first hole 201 are larger than the tip 102, so that the ink can enter the connecting channel through the return air channel 6, and then enter the second hole 202 and the first hole 201. This increases the position of the ink core 1 to absorb ink, thereby increasing the amount of ink drawn. Moreover, the diameter of the first hole 201 is larger than the diameter of the tip 102, so that the micropores at the ink outlet of the ink core 1 are not easily blocked, thus making the ink output more stable and the writing smoother.

[0039] like Figures 4 to 8 As shown, the thin sheets of water storage tube 1 3 are sparse and of different thicknesses, the thin sheets of water storage tube 2 4 are uniform and dense, and the thin sheets of water storage tube 3 5 have the same spacing but different thicknesses; the pointed ends 102 at both ends of the ink core 1 are symmetrical and equal, and the lower end of the mounting hole 2 is provided with an inner ring step 11, and the lower outer end of the middle end 101 of the ink core 1 abuts against the inner ring step 11; the ventilation groove 14, the return air channel 1 6, the return air channel 2 7, and the ventilation hole 601 form a complete closed-loop return air passage; both sides of water storage tube 3 5 are provided with ink grooves 501 that are connected to hole 4 204; the return air channel 1 6 is connected to one side of the corresponding ink groove 501; the fixing part 8 of water storage tube 1 3 is surrounded by a retaining ring 801, and the ventilation groove 14 is provided with an inner recess 9 corresponding to the retaining ring 801. The fixing part 8 is inserted into the ventilation groove 14 and fixedly connected by the retaining ring 801 in the corresponding inner recess 9.

[0040] Through the above settings, the sparsely spaced, differently thick sheets in the water storage tube 3 of this utility model can eliminate and regulate the air pressure in the upper part of the water reservoir and the vacuum in the ink cylinder, allowing the ink to flow smoothly. The addition of roughened and hydrophilic treatment on the sheets allows the flowing ink to be absorbed onto the surface of the sheets for ink storage and regulation of the ink output. The uniformly densely packed sheets in the water storage tube 4 enable bidirectional regulation of the air pressure entering the ink cylinder and water storage tube 3 from the outside. The densely packed sheets, with surface roughening and hydrophilic treatment, absorb and store ink, balancing internal and external pressures to ensure continuous and stable ink flow and the return of excess ink to the ink cylinder. The water storage tube 5 consists of sheets of the same spacing but different thicknesses, with roughened and hydrophilic treatment on the surface of these sheets to absorb and store ink and buffer the ink flow. The combination of these three types of sheets reduces ink spillage caused by the shaking and vibration of the bead, while simultaneously regulating the internal air pressure of the ink cylinder. The symmetrical and equal arrangement of the new pointed tip 102 allows the ink core 1 to be assembled in any direction within the water reservoir, making installation more convenient. The complete closed-loop air return path of this invention provides better visibility and pressure regulation for ink storage, resulting in smoother ink flow. The ink trough 501 allows ink from the ink cartridge to flow into it, increasing the contact area between the bottom of the ink core 1 and the ink, thus making ink absorption more uniform and writing smoother. These features allow for more ink to be added to the air return channel 6, leading to the water reservoir tubes 3 and 4 for storage, preventing ink interruptions and ensuring more stable ink flow and smoother writing. The retaining ring 801 and the recessed part 9 allow for quick and easy installation and fixation of the water reservoir to the pen tip.

[0041] Working principle: During installation, simply insert the ink core 1 into the mounting hole 2 of the water reservoir until the lower end of the middle part 101 of the ink core 1 abuts against the inner ring step 11. The ink core 1 is formed into a rod-shaped blank by a drawing process. The blank is foamed as a whole and finely ground to obtain a cylindrical, relatively hard mating surface. The ink core 1 is more firmly installed in the mounting hole 2 of the water reservoir and is not easy to bend. After further grinding, the foamed cylindrical surface of the ink core 1 has a softer structure, which doubles the surface area of ​​the two pointed parts of the ink core 1, enhances capillary attraction, and makes ink drawing faster. Then, align the fixing part 8 with the pen tip connector 13 and insert it so that the retaining ring part 801 and the concave part 9 are locked and fixed. At this time, one end of the ink core 1 is in contact with the nylon pen tip 10. Then, place it into the pen body 12, align the ink cartridge with the water reservoir tube 3 5 of the water reservoir and insert it to fix the water reservoir and ink cartridge. Once the remaining parts of the pen body 12 and the pen head are installed, the installation is quick and easy. The above settings serve to fix the ink core 1, thereby protecting the ink core 1 and preventing damage to it. During use, the ink will enter the air return channel 6 through the ink groove 501, and then through the air return channel 7, allowing the ink to be stored in the reservoir and continuously supplying ink to the ink core 1. The ink can also come into contact with the ink core 1 through the hole 204 and the ink groove 501, allowing the ink core 1 to draw the ink to the nylon pen tip 10, increasing the amount of ink drawn and making the pen tip write more smoothly. The vent 601 can also introduce ink into the upper part of the ink core 1, further increasing the amount of ink drawn and making the pen tip write more smoothly. The specific structure of the pen body 12 and the pen head of this utility model, as well as their installation method, are all disclosed in the prior art, so they will not be described in detail here.

[0042] 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 direct-liquid drawing pen structure, comprising a pen head, an ink cartridge, an ink-drawing part, a pen body (12), and a ball bearing, wherein the pen head includes a pen tip connector (13) and a nylon pen tip (10) fitted inside the pen tip connector (13), a vent groove (14) is provided at the lower end of the pen tip connector (13) corresponding to the position of the nylon pen tip (10), the ink cartridge, the ink-drawing part, and the ball bearing are all located inside the pen body (12), the ball bearing is disposed inside the ink cartridge, and one end of the ink-drawing part communicates with the ink cartridge, characterized in that, The ink-drawing unit includes a water reservoir and an ink-drawing core (1). The water reservoir is integrally composed of a water storage pipe (3), a water storage pipe (4), and a water storage pipe (5). A return air channel (6) and a return air channel (7) are respectively provided on both sides of the water reservoir. A vent (601) is provided on one side of the return air channel (6). A fixing part (8) is fixedly provided at the upper end of the water reservoir. A mounting hole (2) is provided at the center of the fixing part (8) and the water reservoir, which is clearance-fitted with the ink-drawing core (1). The ink-drawing core (1) passes through the mounting hole (2). The ink-drawing core (1) includes a middle end (101) and a pointed head (102) integrally formed with both sides of the middle end (101). The diameter of the middle end (101) is larger than the diameter of the pointed head (102). The mounting hole (2) consists of hole one (201), hole two (202), hole three (203) and hole four (204) from top to bottom. Hole one (201) corresponds to the upper tip (102) and the diameter of hole one (201) is larger than the diameter of tip (102). Hole two (202) corresponds to the upper end of the middle end (101) and the diameter of hole two (202) is larger than the diameter of middle end (101). One side of hole two (202) is connected to the corresponding air return channel one (6) through a vent hole (601). Hole three (203) matches the lower end of the middle end (101). Hole four (204) matches the lower tip (102). The upper end of the ink core (1) is fixedly connected to the pen tip connector (13).

2. The direct-liquid drawing pen structure according to claim 1, characterized in that, The thin sheets of the first water storage pipe (3) are sparse and of different thicknesses, the thin sheets of the second water storage pipe (4) are uniform and dense, and the thin sheets of the third water storage pipe (5) have the same spacing but different thicknesses.

3. The direct-liquid drawing pen structure according to claim 1, characterized in that, The pointed ends (102) at both ends of the ink core (1) are symmetrical and equal. The lower end of the mounting hole (2) is provided with an inner ring step (11). The lower outer side of the middle end (101) of the ink core (1) abuts against the inner ring step (11).

4. The direct-liquid drawing pen structure according to claim 1, characterized in that, The ventilation slot (14), the first return air channel (6), the second return air channel (7), and the ventilation hole (601) form a complete closed-loop return air passage.

5. The direct-liquid drawing pen structure according to claim 1, characterized in that, The water storage pipe (5) is connected to the hole (204) on both sides by an ink trough (501).

6. The direct-liquid drawing pen structure according to claim 5, characterized in that, The return air channel (6) is connected to one side of the corresponding ink trough (501).

7. The direct-liquid drawing pen structure according to claim 1, characterized in that, The fixing part (8) of the water storage pipe (3) is surrounded by a retaining ring (801), and the ventilation groove (14) is provided with an inner recess (9) corresponding to the position of the retaining ring (801). The fixing part (8) is inserted into the ventilation groove (14) and fixedly connected by the retaining ring (801) in the corresponding inner recess (9).

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