Direct liquid type writing pen

Abstract

The utility model discloses a direct liquid type writing pen, which comprises a pen point and a pen cover, the ink adsorption body is connected to the rear end of the pen point; the ink pipe is used for storing ink; the ink guiding device is connected between the ink adsorption body and the ink pipe, a communicating pipe is arranged on the ink guiding device, more than two flow blocking ribs extending towards the center of the communicating pipe are evenly arranged on the inner wall of the front end of the communicating pipe, and the height of the flow blocking ribs is smaller than the radius of the communicating pipe; the ink cartridge has the advantages that the flowing resistance of ink in the communicating pipe is increased, ink flowing is more stable, meanwhile, the evenly-distributed flow blocking ribs can effectively prevent the ink from generating the vortex or turbulent flow phenomenon in the communicating pipe, fluctuation and noise of ink flowing are reduced, the uniformity and stability of ink flowing are improved, and the service life of the ink cartridge is prolonged. Therefore, continuity and consistency of ink supply in the writing process are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to writing tool technical field especially, it is a kind of straight liquid type writing pen. BACKGROUND

[0002] The prior art document CN220095991U discloses a straight liquid type pen, which comprises a pen tip, a ink adsorption body connected to the rear end of the pen tip, an ink tube arranged behind the ink adsorption body and directly storing ink, and a communication tube connected between the ink tube and the ink adsorption body. Figure 1 It can be seen that the communication tube is arranged at the outer periphery of the rear end of the pen tip, which causes the amount of ink flowing into the pen tip to be small, and most of the ink is adsorbed by the ink adsorption body, resulting in slow or no ink discharge from the pen tip and easy interruption of writing. SUMMARY

[0003] The main purpose of the utility model is to provide a straight liquid type writing pen to solve the problem of small amount of ink discharge from the pen tip and interruption of writing in the prior art.

[0004] To achieve the above purpose, the utility model provides a straight liquid type writing pen, which comprises a pen tip, an ink adsorption body connected to the rear end of the pen tip, an ink tube for storing ink, and a water guide connected between the ink adsorption body and the ink tube, wherein the water guide is provided with a communication tube, the inner wall of the front end of the communication tube is provided with two or more than two flow resistance ribs extending to the center of the communication tube, and the height of the flow resistance rib is less than the radius of the communication tube.

[0005] Compared with the prior art, the utility model discloses the advantages that two or more than two flow resistance ribs extending to the center of the communicating pipe are evenly arranged on the inner wall of the front end of the communicating pipe, the design of the flow resistance rib can increase the flow resistance of the ink in the communicating pipe, the flow of the ink is more stable, the evenly distributed flow resistance rib can effectively prevent the ink from generating vortex or turbulence phenomenon in the communicating pipe, reduces the fluctuation and noise of the ink flow, improves the uniformity and stability of the ink flow, thereby guaranteeing the continuity and consistency of the ink supply in the writing process, the height of the flow resistance rib is less than the radius of the communicating pipe, that is, the center of the front end of the communicating pipe is hollow, the flow resistance ribs in the communicating pipe are not connected together, so that the main ink flow channel is still in the center of the communicating pipe, the ink can be directly supplied to the center position of the ink adsorption body and then flow to the pen point at the front end, ensuring that the flow resistance rib can increase the flow resistance of the ink while not excessively hindering the flow of the ink, which can stabilize the flow of the ink and ensure the smooth supply of the ink, avoiding that the flow of the ink is blocked due to the excessively high flow resistance rib, affecting the writing effect.

[0006] Further, the flow resistance ribs are evenly distributed along the circumference of the inner wall of the communicating pipe. The flow resistance ribs are evenly arranged on the inner wall of the communicating pipe, which helps to evenly distribute the ink in the communicating pipe and reduce the unevenness of the ink flow, thereby improving the consistency of writing.

[0007] Further, at least two air return ports are evenly arranged on the inner wall of the communicating pipe, and the air return ports are located between two adjacent flow resistance ribs. The air return ports provide an additional flow channel for the ink, allowing the ink to flow more smoothly onto the ink adsorption body. The air return ports are located between the flow resistance ribs, which can effectively reduce the resistance of the flow resistance ribs to the flow of the ink, reduce the resistance loss of the ink flow, and improve the flow efficiency and supply speed of the ink, thereby improving the writing fluency and response speed of the writing pen.

[0008] Further, the flow resistance ribs extend from the front end to the rear end of the communicating pipe. This arrangement allows the ink to be distributed evenly throughout the length of the communicating pipe, further ensuring uniform distribution of the ink and reducing dead angles in the ink flow.

[0009] Further, the flow resistance ribs are evenly arranged in three or four or five or six or seven or eight or nine or ten. Providing different numbers of flow resistance ribs can be adjusted according to the specific needs of the writing pen and the characteristics of the ink to achieve the best flow distribution effect.

[0010] Further, the height of the flow resistance rib is 0.5-1.3mm. This arrangement ensures that the ink can be effectively distributed in the communicating pipe without excessively hindering the flow of the ink.

[0011] Further, the front end opening of the communication pipe is opposite to the extension line of the pen nib. In this way, the flow direction of the ink in the communication pipe is consistent with the writing direction of the pen nib, so that the ink can flow more smoothly from the communication pipe to the pen nib. This alignment can improve the accuracy and stability of ink supply, reduce the loss and waste of ink during flow, and improve the performance and writing effect of the writing pen.

[0012] Further, a sealing member is arranged on the front end of the ink pipe, and a top opening member is arranged on the water guide, which is used to open the sealing member. The sealing member seals the ink pipe, facilitating replacement of the ink pipe. When a new ink pipe is installed on the water guide, the top opening member opens the sealing member, so that the ink flows to the pen nib, improving the service life of the pen. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0014] Figure 1 It is a structural schematic diagram of the direct liquid writing pen of the present application;

[0015] Figure 2 It is a structural schematic diagram of the water guide of the first embodiment of the present application;

[0016] Figure 3 It is a structural schematic diagram of the water guide of the second embodiment of the present application;

[0017] Figure 4 It is a structural schematic diagram of the water guide of the third embodiment of the present application;

[0018] Among them, the above drawings include the following drawing marks:

[0019] The pen nib 1, the ink adsorption body 2, the ink pipe 3, the sealing member 31, the water guide 4, the communication pipe 41, the flow resistance rib 42, the air return port 43 and the top opening member 44. DETAILED DESCRIPTION

[0020] The direct liquid writing pen provided in the embodiments of the present application can solve the problems of small ink output of the pen nib and interrupted writing in the prior art.

[0021] The technical solution in the embodiments of the present application is to solve the problems of small ink output of the pen nib and interrupted writing, and the general idea is as follows:

[0022] Two or more flow-blocking ribs extending towards the center of the connecting tube are evenly arranged on the inner wall of the front end of the connecting tube. The design of the flow-blocking ribs increases the flow resistance of ink in the connecting tube, making the ink flow more stable. At the same time, the evenly distributed flow-blocking ribs can effectively prevent the formation of eddies or turbulence in the ink in the connecting tube, reduce the fluctuation and noise of ink flow, and improve the uniformity and stability of ink flow, thereby ensuring the continuity and consistency of ink supply during writing. The height of the flow-blocking ribs is less than the radius of the connecting tube, that is, the center of the front end of the connecting tube is hollow. The flow-blocking ribs in the connecting tube are not connected together. In this way, the main channel of ink is still in the center of the connecting tube, which can directly supply ink to the center of the ink absorber and then flow to the pen tip at its front end. This ensures that while the flow-blocking ribs increase the flow resistance of ink, they do not excessively hinder the flow of ink. They can both stabilize the ink flow and ensure a smooth supply of ink, avoiding the impact of ink flow obstruction due to excessively high flow-blocking ribs.

[0023] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Example 1:

[0025] like Figures 1-2 As shown, a direct-liquid writing pen includes a pen tip 1, an ink absorber 2 for storing ink, an ink tube 3, and a water inlet 4. The ink absorber 2 is connected to the rear end of the pen tip 1, and the water inlet 4 is connected between the ink absorber 2 and the ink tube 3. A connecting tube 41 is provided on the water inlet 4. Six flow-blocking ribs 42 extending towards the center of the connecting tube 41 are evenly arranged on the inner wall of the front end of the connecting tube 41. The six flow-blocking ribs are, from clockwise, the first flow-blocking rib, the second flow-blocking rib, the third flow-blocking rib, the fourth flow-blocking rib, the fifth flow-blocking rib, and the sixth flow-blocking rib. The height of the flow-blocking ribs 42 is less than the radius of the connecting tube 41, and the flow-blocking ribs 42 are evenly distributed circumferentially along the inner wall of the connecting tube 41. The flow-blocking ribs 42 evenly surround the inner wall of the connecting tube 41, which helps the ink to flow evenly within the connecting tube 41, reduces the unevenness of ink flow, and thus improves the consistency of writing. The inner diameter of the connecting pipe 41 ranges from 2 to 4.9 mm, and the height of the flow-blocking rib is 0.5-1.3 mm. In this embodiment, the inner diameter is 4.9 mm, the height of the flow-blocking rib is 1.3 mm, and the height of the flow-blocking rib 42 is proportional to the inner diameter of the connecting pipe 41.

[0026] In specific implementation, three air return openings 43 are evenly arranged on the inner wall of the communication pipe 41. One air return opening is arranged between the first and second resistance ribs, one air return opening is arranged between the third and fourth resistance ribs, and one air return opening is arranged between the fifth and sixth resistance ribs. The three air return openings are arranged to provide additional flow channels for the ink, so that the ink can flow more smoothly onto the ink adsorption body 2. The air return openings 43 are located between the resistance ribs 42, which can effectively alleviate the resistance of the resistance ribs 42 to the ink flow, reduce the resistance loss of the ink flow, improve the flow efficiency and supply speed of the ink, and thus improve the writing fluency and response speed of the writing pen.

[0027] In specific implementation, the resistance ribs 42 extend from the front end to the rear end of the communication pipe 41. This arrangement ensures that the ink can be divided in the entire length when flowing in the communication pipe 41, further ensuring uniform distribution of the ink and reducing dead angles of the ink flow.

[0028] In specific implementation, the front end opening of the communication pipe 41 is aligned with the extension line of the nib 1. This arrangement ensures that the flow direction of the ink in the communication pipe 41 is consistent with the writing direction of the nib 1, so that the ink can flow more smoothly from the communication pipe 41 to the nib 1. This alignment facilitates improvement of the accuracy and stability of ink supply, reduces loss and waste of ink during flow, and thus improves the performance and writing effect of the writing pen.

[0029] In specific implementation, a sealing member 31 is arranged on the front end of the ink pipe 3, and a top-opening member 44 is arranged on the water guide 4, which is used to open the sealing member 31. The sealing member 31 seals the ink pipe 3, facilitating replacement of the ink pipe. When a new ink pipe 3 is installed on the water guide 4, the top-opening member 44 opens the sealing member 31, allowing the ink to flow to the nib, thereby improving the service life of the pen.

[0030] In specific implementation, the front end opening of the communication pipe 41 is aligned with the extension line of the nib 1. This arrangement ensures that the flow direction of the ink in the communication pipe 41 is consistent with the writing direction of the nib 1, so that the ink can flow more smoothly from the communication pipe 41 to the nib 1. This alignment facilitates improvement of the accuracy and stability of ink supply, reduces loss and waste of ink during flow, and thus improves the performance and writing effect of the writing pen.

[0031] In specific implementation, a sealing member 31 is arranged on the front end of the ink pipe 3, and a top-opening member 44 is arranged on the water guide 4, which is used to open the sealing member 31. The sealing member 31 seals the ink pipe 3, facilitating replacement of the ink pipe. When a new ink pipe 3 is installed on the water guide 4, the top-opening member 44 opens the sealing member 31, allowing the ink to flow to the nib 1, thereby improving the service life of the pen.

[0032] The working principle of the embodiment is:

[0033] The ink tube 3 containing ink is installed on the water inlet 4. The seal 31 is pushed open by the push-opening part 44 on the water inlet 4. The ink flows into the front section of the connecting tube 41 and flows to the ink absorber 2 through the side air return port 43. The flow-blocking rib 42 at the front end of the connecting tube controls the ink flow rate. The ink flows into the pen tip through the ink absorber 2 until the pen tip is saturated, thus realizing writing. Excess ink is stored by the ink absorber 2.

[0034] Example 2:

[0035] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that eight flow-blocking ribs 42 extending towards the center of the connecting pipe 41 are provided on the inner wall of the front end of the connecting pipe 41. The eight flow-blocking ribs 42 are evenly distributed along the circumference of the inner wall of the connecting pipe 41. The eight flow-blocking ribs, from clockwise, are the first flow-blocking rib, the second flow-blocking rib, the third flow-blocking rib, the fourth flow-blocking rib, the fifth flow-blocking rib, the sixth flow-blocking rib, the seventh flow-blocking rib, and the eighth flow-blocking rib. A return air port is provided between the first flow-blocking rib and the second flow-blocking rib, and between the third flow-blocking rib and the fourth flow-blocking rib. A return air port is provided between the fifth flow-blocking rib and the sixth flow-blocking rib. A return air port is set between the flow ribs, and another return air port is set between the seventh and eighth flow ribs, for a total of four return air ports. The tops of the second and third flow ribs are connected together to form a flow blocking section. The flow blocking section is triangular in shape and has a guide port in the middle to facilitate the flow of ink to the ink absorber. Similarly, the tops of the fourth and fifth flow ribs are connected together to form a flow blocking section, the tops of the sixth and seventh flow ribs are connected together to form a flow blocking section, and the tops of the eighth flow rib and the first flow rib are connected together to form a flow blocking section. The structure of each flow blocking section can be the same or different.

[0036] Example 3:

[0037] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that four flow-blocking ribs 42 extending towards the center of the connecting pipe 41 are provided on the inner wall of the front end of the connecting pipe 41. The four flow-blocking ribs are, from clockwise, the first flow-blocking rib, the second flow-blocking rib, the third flow-blocking rib, and the fourth flow-blocking rib. A return air port is provided between the first flow-blocking rib and the second flow-blocking rib, and another return air port is provided between the third flow-blocking rib and the fourth flow-blocking rib. The included angle between the first flow-blocking rib and the second flow-blocking rib is 60 degrees, and the included angle between the third flow-blocking rib and the fourth flow-blocking rib is 60 degrees.

[0038] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the use of data "first", "second", etc., significantly implies the sufficiency of the data at hand for the person of ordinary skill in the art to modify examples of the application described herein in a manner positive for the progress of the art, but not necessarily according to the order in which they are described.

[0039] The preferred embodiments of the present application have been described above with the preferred embodiments; however, all the changes and modifications that can be made on the present application come within the scope of the present application. Any modified, equivalent replacement, improvement, etc., made within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A liquid direct writing pen, characterized by, The straight liquid writing pen comprises: a pen point; an ink adsorption body connected to the rear end of the pen point; an ink tube for storing ink; a water guide connected between the ink adsorption body and the ink tube, the water guide being provided with a communication tube, the inner wall of the front end of the communication tube being provided with two or more than two flow resistance ribs extending to the center of the communication tube, the height of the flow resistance ribs being less than the radius of the communication tube.

2. The direct liquid writing pen according to claim 1, wherein The flow resistance ribs are uniformly distributed along the circumference of the inner wall of the communication tube.

3. A direct liquid writing pen according to claim 1 or 2, wherein The inner wall of the communication tube is uniformly provided with at least two air return ports, the air return ports being located between two adjacent flow resistance ribs.

4. A direct liquid writing pen according to claim 3, wherein The flow resistance ribs extend from the front end to the rear end of the communication tube.

5. The direct liquid writing pen according to claim 1 or 2 or 4, wherein The flow resistance ribs are uniformly provided with three or four or six or eight or nine flow resistance ribs.

6. A direct liquid writing pen according to claim 5, wherein The height of the flow resistance ribs is 0.5-1.3 mm.

7. The direct liquid writing pen according to claim 1 or 2 or 4 or 6, wherein The front end opening of the communication tube is opposite to the extension line of the pen point.

8. A direct liquid writing pen according to claim 7, wherein The front end of the ink tube is provided with a sealing element, and the water guide is provided with a top opening element for opening the sealing element.

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