Straight liquid type pen capable of writing smoothly

Abstract

The utility model relates to a straight liquid style pen that writes smoothly, including penholder subassembly, reservoir, nib, ink cartridge and stirring bead, reservoir one end towards the cavity is equipped with more than two groups of protruding part for blocking the stirring bead, forms the lateral flow groove with the inner bore between adjacent protruding part, and ink cartridge extends to the lateral flow groove, and the stirring bead is equipped with the stirring bead. The utility model mainly aims to prevent the steel ball from damaging the ink supply structure, and a plurality of side flow grooves are naturally formed between the adjacent convex parts, so that the ink in the cavity has a plurality of flow channels flowing to the inner hole, the ink guide core is fully contacted with the ink, and the pen point is smooth in ink supply and smooth in writing.

Description

Technical Field

[0001] This utility model relates to the technical field of direct-liquid pens, and in particular to a direct-liquid pen that provides smooth writing. Background Technology

[0002] Direct-liquid ink pens typically consist of a barrel, a reservoir, a nib, and an ink core housed within the barrel. The barrel contains a cavity for storing ink, and the ink core, located at the inner hole of the reservoir, connects the cavity and the nib, ensuring a continuous ink supply. To prevent ink from becoming suspended in the cavity due to surface tension, traditional direct-liquid ink pens usually place a stirring bead inside the cavity to disrupt ink surface tension and ensure normal ink supply. However, this also means that the inner hole of the reservoir may become clogged by the stirring bead, affecting the writing experience of the direct-liquid ink pen. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is: a direct-liquid pen with smooth writing, including a pen barrel assembly, a water reservoir, a pen tip, a water guide core, and a stirring bead. The water reservoir is fitted inside the pen barrel assembly, and the pen barrel assembly has a cavity for storing ink. The cavity has a stirring bead. The water reservoir has an inner hole for guiding the flow, and the inner hole has a pen tip and a water guide core coaxially distributed. At one end of the water reservoir facing the cavity, there are two or more sets of protrusions for blocking the stirring bead. Adjacent protrusions form a side flow groove that communicates with the inner hole, and the water guide core extends to the side flow groove.

[0004] Using the above technical solution, the stirring beads are made of stainless steel beads, plastic beads, etc. The protrusions are used to prevent the steel beads from damaging the ink supply structure. Multiple side flow grooves are naturally formed between adjacent protrusions, so that the ink in the cavity has multiple flow channels to the inner hole, so that the ink core can fully contact the ink, and the pen tip can supply ink smoothly and write smoothly.

[0005] The present invention is further configured such that the protrusion includes snap-fit ​​posts and limiting posts distributed around the inner hole, the snap-fit ​​posts and limiting posts are combined to form the side flow groove, and the two pairs of snap-fit ​​posts and limiting posts are distributed in a rhomboid structure around the inner hole to prevent the stirring beads from approaching the inner hole and causing blockage.

[0006] The present invention is further configured such that the protrusion includes snap-fit ​​posts distributed circumferentially around the inner hole, and adjacent snap-fit ​​posts are combined to form the side flow groove. The three sets of snap-fit ​​posts are circumferentially around the inner hole to prevent the stirring beads from approaching the inner hole and causing blockage.

[0007] The present invention is further configured such that the inner side of the snap-fit ​​post is provided with a stepped portion, and the two ends of the water-guiding core are conical structures, and the two ends of the water-guiding core respectively abut against the pen tip and the stepped portion. The stepped portion plays a limiting role to prevent the water-guiding core from moving into the cavity.

[0008] The present invention is further configured such that the inner diameter of the adjacent stepped portion is smaller than the outer diameter of the stirring bead, so as to prevent the stirring bead from getting stuck in the gap between the stepped portions.

[0009] The present invention is further configured such that the pen barrel assembly includes a rear rod and a threaded sleeve. The rear rod has a threaded portion and a limiting surface. The threaded sleeve is connected to the rear rod through the threaded portion. The water reservoir is snapped between the threaded sleeve and the limiting surface. The threaded connection allows the threaded sleeve to be connected inside the rear rod. The overall structure is easy to install and suitable for automated mass production. Furthermore, the outer diameter of the connection between the threaded sleeve and the rear rod is the same, and the connection surface is hidden, making the pen barrel more aesthetically pleasing.

[0010] The present invention is further configured such that the water reservoir has a circular part, and the pen tip and the threaded sleeve are respectively fitted on the inner and outer sides of the circular part. The pen tip and the water-guiding core are independently installed in the water reservoir, so as to avoid the threaded sleeve squeezing and damaging the connection structure between the pen tip and the water-guiding core when fixing the water reservoir, so as to make the pen tip supply ink smoothly.

[0011] The present invention is further configured such that the water storage device is provided with a venting groove connected to the cavity, and the air pressure in the cavity is balanced by the venting groove to prevent ink interruption due to negative pressure in the cavity.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The protrusions are designed to prevent the steel balls from damaging the ink supply structure. Multiple side flow channels are naturally formed between adjacent protrusions, giving the ink in the cavity multiple channels to flow into the inner hole. This ensures that the ink core is in full contact with the ink, resulting in smooth ink supply and fluid writing.

[0014] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention;

[0016] Figure 2 This utility model Figure 1 A magnified view of the central A-direction view;

[0017] Figure 3 This is a cross-sectional view of the water storage device of this utility model;

[0018] Figure 4 This is a perspective view of the first embodiment of the water storage device of this utility model;

[0019] Figure 5 This is a top view of the first embodiment of the water storage device of this utility model;

[0020] Figure 6This is a top view of the second embodiment of the water storage device of this utility model;

[0021] Wherein: 1-pen barrel assembly, 2-water reservoir, 3-pen tip, 4-water inlet core, 5-stirring bead, 6-cavity, 11-rear rod, 12-threaded sleeve, 13-threaded part, 14-limiting surface, 20-protrusion, 21-inner hole, 22-side flow groove, 23-ring part, 24-venting groove, 25-clamping post, 26-limiting post, 27-step part, 28-virtual cylinder; Detailed Implementation

[0022] like Figure 1 , 2 As shown, this utility model discloses a direct-liquid pen for smooth writing, including a pen barrel assembly 1, a water reservoir 2, a pen tip 3, a water guide 4, and a stirring bead 5. The water reservoir 2 is fitted inside the pen barrel assembly 1, and the water reservoir 2 and the pen barrel assembly 1 are combined to form a cavity 6 for storing ink. The cavity 6 is provided with the stirring bead 5. The water reservoir 2 is provided with an inner hole 21 for guiding the flow, and the inner hole 21 is provided with a pen tip 3 and a water guide 4 coaxially distributed. At one end of the water reservoir 2 facing the cavity 6, there are two or more sets of protrusions 20 for blocking the stirring bead 5. A side flow groove 22 is formed between adjacent protrusions 20 and communicates with the inner hole 21, and the water guide 4 extends to the side flow groove 22.

[0023] Combination Figure 3 As shown, in this embodiment, the pen assembly 1 includes a rear rod 11 and a threaded sleeve 12. The rear rod 11 is provided with a threaded portion 13 and a limiting surface 14. The threaded sleeve 12 is connected to the rear rod 11 through the threaded portion 13. The water reservoir 2 is snapped between the threaded sleeve 12 and the limiting surface 14. The water reservoir 2 is provided with an annular portion 23. The pen tip 3 and the threaded sleeve 12 are respectively sleeved on the inner and outer sides of the annular portion 23. The water reservoir 2 is provided with a venting groove 24 that communicates with the cavity 6.

[0024] like Figure 3 , 4 As shown in Figure 5, the present invention discloses a first embodiment of the water storage device structure. The protrusion 20 includes two pairs of snap-fit ​​posts 25 and limiting posts 26 distributed around the inner hole 21. The snap-fit ​​posts 25 and limiting posts 26 are combined to form a side flow channel 22. The two pairs of snap-fit ​​posts 25 and limiting posts 26 are distributed in a rhomboid structure around the inner hole 21. The inner side of the snap-fit ​​post 25 is provided with a step 27. The two ends of the water guide core 4 abut against the pen tip 3 and the step 27 respectively. A virtual cylinder 28 is formed between adjacent step 27s, and the inner diameter of the virtual cylinder 28 is smaller than the outer diameter of the stirring bead 5.

[0025] like Figure 3 , 6As shown, this utility model discloses a second embodiment of the water storage device structure. The protrusion 20 includes snap-fit ​​posts 25 distributed circumferentially around the inner hole 21. Adjacent snap-fit ​​posts 25 are combined to form a side flow channel 22. Three sets of snap-fit ​​posts 25 are combined to form a virtual circle, and the virtual circle is concentrically distributed on the outside of the inner hole 21. The inner side of the snap-fit ​​posts 25 is provided with a step portion 27. The two ends of the water guide core 4 abut against the pen tip 3 and the step portion 27 respectively. Adjacent step portions 27 form a virtual cylinder 28, and the inner diameter of the virtual cylinder 28 is smaller than the outer diameter of the stirring bead 5. It is worth mentioning that the number of snap-fit ​​posts 25 is set according to actual needs. Therefore, structures such as four sets of snap-fit ​​posts or five sets of snap-fit ​​posts on the water storage device 2 are all within the protection scope of this utility model.

[0026] The working principle of this utility model is as follows: ink is stored in the cavity 6, and the ink flows into the inner hole 21 through the gap between the protrusions 20. It is guided by the water-guiding core 4 to supply ink to the pen tip 3. When the pen body is shaken and the ink is stirred evenly by the stirring bead 5, the protrusions 20 prevent the steel ball from hitting the water-guiding core 4, thus preventing the structure of the water-guiding core 4 from being damaged. In addition, multiple side flow grooves 22 are naturally formed between adjacent protrusions 20, so that the water-guiding core 4 can fully contact the ink and meet the ink supply requirements of the pen tip 3.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A direct-liquid pen for smooth writing, comprising a pen barrel assembly (1), a water reservoir (2), a pen tip (3), a water guide (4), and a stirring bead (5), wherein the water reservoir (2) is fitted inside the pen barrel assembly (1), the pen barrel assembly (1) has a cavity (6) for storing ink, the cavity (6) has a stirring bead (5), the water reservoir (2) has an inner hole (21) for guiding the ink flow, and the inner hole (21) has a pen tip (3) and a water guide (4) coaxially distributed, characterized in that, The water reservoir (2) has two or more sets of protrusions (20) facing the cavity (6) to block the stirring beads (5). A side flow groove (22) is formed between adjacent protrusions (20) and is connected to the inner hole (21). The water core (4) extends to the side flow groove (22).

2. The direct-liquid pen for smooth writing according to claim 1, characterized in that: The protrusion (20) includes snap-fit ​​posts (25) and limiting posts (26) distributed around the inner hole (21), and the snap-fit ​​posts (25) and limiting posts (26) are combined to form the side flow groove (22).

3. The direct-liquid pen for smooth writing according to claim 1, characterized in that: The protrusion (20) includes snap-fit ​​posts (25) distributed circumferentially around the inner hole (21), and adjacent snap-fit ​​posts (25) are combined to form the side flow groove (22).

4. A direct-liquid pen for smooth writing according to claim 2 or 3, characterized in that: The inner side of the snap-fit ​​post (25) is provided with a stepped part (27), and the two ends of the water-guiding core (4) are conical structures, and the two ends of the water-guiding core (4) are respectively snapped into the pen tip (3) and the stepped part (27).

5. A direct-liquid pen for smooth writing according to claim 4, characterized in that: A virtual cylinder (28) is formed between adjacent stepped portions (27), and the inner diameter of the virtual cylinder (28) is smaller than the outer diameter of the stirring bead (5).

6. A direct-liquid pen for smooth writing according to claim 1, characterized in that: The pen assembly (1) includes a rear rod (11) and a threaded sleeve (12). The rear rod (11) is provided with a threaded part (13) and a limiting surface (14). The threaded sleeve (12) is connected to the rear rod (11) through the threaded part (13). The water reservoir (2) is snapped between the threaded sleeve (12) and the limiting surface (14).

7. A direct-liquid pen for smooth writing according to claim 6, characterized in that: The water reservoir (2) is provided with a circular ring (23), and the pen tip (3) and the threaded sleeve (12) are respectively fitted on the inner and outer sides of the circular ring (23).

8. A direct-liquid pen for smooth writing according to claim 7, characterized in that: The water storage device (2) is provided with a venting groove (24) that communicates with the cavity (6).

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