Water storage device for direct-liquid pen and direct-liquid propylene pen with water storage device
By using a water reservoir with a liquid conduction core tube and a convex ring structure in the straight liquid pen, the liquid suction cylinder absorbs the overflow and slowly supplies the pen tip, the problems of liquid leakage and high cost are solved, and uniform water effluent and cost reduction are achieved.
Patent Information
- Application Number
- CN202422482258.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-14
AI Technical Summary
Existing straight liquid pens are prone to leakage when not in use, and the mold processing of water storage structures is difficult and costly, so the problems of leakage and waste of pen liquid cannot be completely eliminated.
The water storage body includes a liquid conducting core tube and a convex ring. An air gap channel is provided on the convex ring. The liquid suction cylinder sleeve is arranged on the outer periphery of the liquid conducting core tube. The overflow is absorbed through the liquid suction cylinder and slowly supplied to the pen tip, reducing the difficulty of mold processing.
Eliminate liquid leakage problems, keep the pen tip evenly out of water, and reduce the cost of the liquid reservoir.
Smart Images
Figure CN223237253U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of stationery accessories and stationery, in particular to a water reservoir for a direct liquid pen and a direct liquid pen with the water reservoir. Background Art
[0002] Existing straight-liquid pens all have a water reservoir, which serves as an intermediate component connecting the pen tip and the liquid storage chamber. The water storage structure is formed by arranging a number of laminated sheets at intervals, with grooves formed between adjacent laminated sheets serving as a water reservoir. An airflow channel is also provided within the water storage structure. During the use of the straight-liquid pen, air and water exchange occurs within the liquid storage chamber. As liquid is replenished to the pen tip, air in the airflow channel continuously enters the liquid storage chamber, preventing the liquid in the liquid storage chamber from overflowing through the airflow channel. However, when the straight-liquid pen is not in use, the air pressure within the water storage chamber is the same as the external atmospheric pressure. However, users are accustomed to inserting the straight-liquid pen into the pen barrel with the pen tip facing downward. Due to the influence of gravity, the liquid in the liquid storage chamber easily enters the water storage structure through the airflow channel. Over time, the liquid in the water storage structure accumulates, causing the liquid to leak out. Alternatively, during writing, the leaked liquid also supplies water to the pen tip, causing the water output from the pen tip to suddenly increase, resulting in uneven water output. This not only affects the pen's usability but also wastes the liquid. To address these issues, the water tank's volume is increased to improve storage capacity and prevent leakage. Consequently, existing water storage structures employ thin, numerous, and densely packed laminations, creating more reservoirs. However, these reservoirs face significant cost reduction challenges due to the high mold-making complexity, high machining precision, and complex production processes. Furthermore, increasing the tank's volume cannot completely eliminate leakage and wasted pen fluid. Utility Model Content
[0003] In order to solve the above problems, the purpose of the present utility model is to provide a water reservoir for a straight liquid pen, which can not only prevent leakage but also fully recycle the leaked liquid and slowly supply it to the pen tip, so that the pen tip maintains uniform water flow.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] Technical Solution 1
[0006] A water reservoir for a straight liquid pen comprises a water reservoir body and a liquid pipette. The water reservoir body comprises a liquid conducting core tube and a plurality of convex rings spaced apart along the length of the liquid conducting core tube. The convex rings are arranged around the upper portion of the outer circumference of the liquid conducting core tube, and an annular water storage groove is formed between two adjacent convex rings. Each of the convex rings is provided with an air gap channel. The liquid pipette is sleeved on the outer circumference of the liquid conducting core tube and located below the plurality of convex rings. A through hole for accommodating a liquid conducting rod is provided in the liquid conducting core tube along its length.
[0007] More preferably, the water storage tank also includes a liquid inlet end, which is arranged on the surface of the outermost convex ring, and the liquid inlet end includes a limit plate arranged horizontally and parallel above the outermost convex ring and two connecting plates vertically fixed between the outermost convex ring and the limit plate, the two connecting plates are symmetrically arranged on both sides of the through hole, and a liquid inlet is formed between the limit plate, the outermost convex ring and the two connecting plates; a circular hole is provided in the center of the limit plate that passes through the limit plate.
[0008] More preferably, the end of the liquid-conducting core tube away from the convex ring is located in the liquid-pipetting cylinder.
[0009] More preferably, the thickness of the convex ring is ≥0.5 mm.
[0010] More preferably, the liquid guiding core tube and the plurality of convex rings are integrally formed.
[0011] More preferably, the liquid-absorbing cylinder is made of breathable hollow cotton.
[0012] More preferably, the air gap channels on each of the convex rings are all or partially staggered.
[0013] Based on the same inventive concept, the utility model also provides a straight liquid acrylic pen.
[0014] Technical Solution 2
[0015] A straight liquid acrylic pen comprises a pen barrel, a pen cap, a liquid guide rod, a pen tip integrally formed with the liquid guide rod or formed separately, with its rear end abutting the front end of the liquid guide rod, and the water reservoir described in Technical Solution 1. The pen barrel is provided with a liquid storage chamber, the pen tip is fixed to the front end of the pen barrel, the pen cap is sleeved on the front portion of the pen barrel, the water reservoir is fixed within the pen barrel, the liquid guide rod is disposed within the liquid guide core tube of the water reservoir, the distal end of the pen tip is tightly attached to the liquid pipette, and the distal end of the liquid guide core tube of the water reservoir is connected to the liquid storage chamber.
[0016] More preferably, the pen-proximal tip of the pipette is in close contact with the inner wall of the pen tube.
[0017] More preferably, the pen tube is a split pen tube, including a front pen tube and a rear pen tube that are sealed and connected to each other, the pen tip is fixed to the front end of the front pen tube, the water reservoir is fixed in the front pen tube, and a liquid storage cavity is provided in the rear pen tube, and the end of the liquid guide core tube of the water reservoir is connected to the liquid storage cavity.
[0018] The utility model has the following beneficial effects:
[0019] 1. The utility model fully absorbs and utilizes the overflow liquid from the air gap channel through the liquid collecting and guiding functions of the liquid suction tube, thereby eliminating the problem of liquid leakage and maintaining uniform water discharge from the pen tip.
[0020] 2. The utility model has a simple structure and an ingenious design, which reduces the difficulty of mold processing of the liquid reservoir, thereby reducing the cost of the liquid reservoir. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a three-dimensional diagram of the water storage device of the present utility model;
[0022] Figure 2 It is an exploded view of the utility model;
[0023] Figure 3 It is a cross-sectional view of the utility model;
[0024] Figure 4 This is an exploded view of the straight liquid acrylic pen of the utility model;
[0025] Figure 5 This is a cross-sectional view of a straight liquid acrylic pen with a split pen barrel according to the present invention;
[0026] Figure 6 This is a cross-sectional view of the front pen tube of the straight liquid acrylic pen of the present invention;
[0027] Figure 7 This is a cross-sectional view of a straight liquid acrylic pen with an integrated pen barrel according to the present invention.
[0028] Description of reference numerals:
[0029] 100. Water reservoir; 10. Water reservoir body; 11. Liquid guide core tube; 12. Convex ring; 13. Water storage tank; 14. Air gap channel; 15. Through hole; 16. Liquid inlet end; 161. Limit plate; 162. Connecting plate; 163. Liquid inlet; 164. Circular hole; 20. Liquid pipette; 200. Pen tube; 210. Front pen tube; 220. Rear pen tube; 300. Pen cap; 400. Liquid guide rod; 500. Pen tip; 600. Liquid storage cavity; d. Thickness. DETAILED DESCRIPTION
[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0031] Example 1
[0032] See also Figures 1 to 3A water reservoir 100 for a straight liquid pen includes a water reservoir body 10 and a liquid pipette 20. The water reservoir body 10 includes a liquid guide core tube 11 and a plurality of convex rings 12 spaced apart along the length direction of the liquid guide core tube 11. The convex rings 12 are arranged around the upper portion of the outer periphery of the liquid guide core tube 11 and an annular water storage groove 13 is formed between two adjacent convex rings 12. Each of the convex rings 12 is provided with an air gap channel 14. The liquid pipette 20 is sleeved on the outer periphery of the liquid guide core tube 11 and is located below the plurality of convex rings 12. A through hole 15 for accommodating a liquid guide rod 400 is provided in the liquid guide core tube 11 along its length direction.
[0033] Preferably, the pipette 20 is made of a water-absorbing material. Because the water-absorbing material has a fibrous structure containing numerous tiny channels, these channels form gaps and also act as capillaries. Therefore, while absorbing and storing liquid, the pipette 20 also serves as an airflow channel, balancing the air pressure within the liquid storage chamber 600 with the ambient air pressure. Preferably, the pipette 20 is made of breathable hollow cotton.
[0034] Preferably, the liquid guiding core tube 11 and the plurality of protruding rings 12 are integrally formed to improve the overall structural stability.
[0035] Preferably, all or some of the air gap channels 14 on each of the raised rings 12 are staggered. Since the air gap channels 14 connect the upper and lower water storage tanks 13, the staggered arrangement is intended to create a circuitous airflow path and fully utilize the liquid storage function of the water storage tanks 13. For example, the air gap channels 14 on the topmost and bottommost raised rings 12 are located on the same straight line, while the air gap channels 14 on the middle raised rings 12 are located on another straight line.
[0036] See also Figures 4 to 6 , Figure 6In the figure, solid arrows indicate the direction of gas flow from outside to inside, while hollow arrows indicate the direction of liquid inflow and gas outflow from the liquid reservoir 600. In use, the water reservoir 100 is generally located in the middle or front portion of the pen barrel 200. The front end of the pen barrel 200 is fixed with a nib 500 for writing, and the rear end of the pen barrel 200 is provided with the liquid reservoir 600. A liquid guide rod 400 is disposed within the liquid guide core tube 11. The liquid guide rod 400 and the nib 500 are integrally formed, or the rear end of the nib 500 abuts the front end of the liquid guide rod 400. The distal end of the liquid guide rod 400 is located at the end of the through-hole 15 or extends through the through-hole 15. The liquid guide rod 400 draws liquid from the liquid reservoir 600, which then flows along the liquid guide rod 400 into the nib 500. The end of the pen tip 500 abuts against the liquid guiding rod 400 and also abuts or fits tightly against the liquid pipette 20. The writing liquid that flows into the air gap channel 14 will be absorbed by the liquid pipette 20 after flowing out from the convex ring 12 at the bottom end, and will diffuse along the liquid pipette 20. When writing, it will slowly move downward along the liquid pipette 20 and gather to the end of the liquid pipette 20 near the pen tip 500. By utilizing the fitting or abutting connection between the end of the pen tip 500 and the liquid pipette 20, the writing liquid slowly flows to the pen tip 500, which can prevent leakage, make full use of the writing liquid, and keep the pen tip 500 evenly discharging water when writing.
[0037] Since the water reservoir 100 of this embodiment not only collects the writing fluid flowing from the air gap channel 14 through the water tank 13, but more importantly, collects the writing fluid through the liquid pipette 20 and slowly guides it to the pen tip 500, the writing fluid in the water tank 13 will not accumulate. Therefore, the convex ring 12 of this embodiment does not need to be processed into the thin-sheet structure of existing water reservoirs, nor does it require a large number of thin sheets to form more water tanks 13. The thickness d of the convex ring 12 of this embodiment can be ≥0.5mm. For example, the thickness of the convex ring 12 is 1mm, and the number of convex rings 12 can be 3 or more. Such a water reservoir 100 can reduce the difficulty of mold manufacturing and reduce processing accuracy, thereby significantly reducing the cost of the water reservoir 100.
[0038] In this embodiment, there are various possible implementations for the end of the pen tip 500 to contact the liquid pipette 20. For example, a convex edge can be provided at the end of the pen tip 500 so that the convex edge is in close contact with the liquid pipette 20. For example, a preferred connection method is that the end of the liquid guide core tube 11 away from the convex ring 12 is located inside the liquid pipette 20. This ensures that the end of the pen tip 500 abuts the liquid guide rod 400 while the outer peripheral side wall of the end of the pen tip 500 fully contacts the inner wall of the liquid pipette 20, thereby guiding the writing liquid to the pen tip 500.
[0039] When the water reservoir of this embodiment is applied to acrylic painting brushes, since acrylic paint contains water-insoluble components such as zinc sulfate, barium sulfate, etc., a ball is provided in the liquid storage chamber 600. When writing, the ball will be pressed on the through hole 15 under the action of gravity, affecting the smoothness of liquid discharge. Therefore, a liquid inlet end 16 needs to be provided at the end of the water reservoir 100. The liquid inlet end 16 can be fixed to the surface of the outermost convex ring 12. The liquid inlet end 16 includes a limit plate 161 horizontally and parallelly arranged above the outermost convex ring 12 and two connecting plates 162 vertically fixed between the outermost convex ring 12 and the limit plate 161. The two connecting plates 162 are symmetrically arranged on both sides of the through hole 15. A liquid inlet 163 is formed between the limit plate 161, the outermost convex ring 12 and the two connecting plates 162; a circular hole 164 is provided in the center of the limit plate 161 and passes through the limit plate 161. After the liquid inlet end 16 is provided, the ball will only rest against the upper portion of the limiting plate 161 and will not block the liquid inlet 163 .
[0040] The liquid reservoir 100 of the present invention fully absorbs and utilizes the overflow liquid from the air gap channel 14 through the liquid collecting and guiding functions of the liquid pipette 20, thereby eliminating the leakage problem while maintaining uniform water discharge from the pen tip 500. It can also reduce the difficulty of mold processing of the liquid reservoir 100 and reduce the cost of the liquid reservoir 100.
[0041] Based on the same inventive concept, the present invention also provides a straight liquid acrylic pen using the liquid reservoir 100 in the first embodiment.
[0042] Example 2
[0043] See also Figures 1 to 7 A straight liquid acrylic pen includes a pen barrel 200, a pen cap 300, a liquid guiding rod 400, and a pen tip 500 integrally formed with the liquid guiding rod 400 or formed separately and with the rear end abutting the front end of the liquid guiding rod 400. The pen barrel 200 is provided with a liquid storage chamber 600, the pen tip 500 is fixed to the front end of the pen barrel 200, the pen cap 300 is sleeved on the front part of the pen barrel 200, the water reservoir 100 is fixed in the pen barrel 200, the liquid guiding rod 400 is arranged in the liquid guiding core tube 11 of the water reservoir 100, the end of the pen tip 500 is tightly attached to the liquid pipe 20, and the end of the liquid guiding core tube 11 of the water reservoir 100 is connected to the liquid storage chamber 600.
[0044] The water reservoir 100 includes a water reservoir body 10 and a liquid pipette 20. The water reservoir body 10 includes a liquid guide core tube 11 and a plurality of convex rings 12 spaced apart along the length direction of the liquid guide core tube 11. The convex rings 12 are arranged around the upper portion of the outer periphery of the liquid guide core tube 11 and an annular water storage groove 13 is formed between two adjacent convex rings 12. Each of the convex rings 12 is provided with an air gap channel 14. The liquid pipette 20 is sleeved on the outer periphery of the liquid guide core tube 11 and is located below the plurality of convex rings 12. A through hole 15 for accommodating the liquid guide rod 400 is provided in the liquid guide core tube 11 along its length direction. Figure 6 As described above, the end of the pipette 20 near the pen tip 500 is in close contact with the inner wall of the pen barrel 200, which can further prevent leakage of liquid along the inner wall of the pen barrel 200. After external air enters the pen barrel 200 through the gap between the pen barrel 200 and the pen tip 500, the pipette 200 and the inner wall of the pen barrel are in close contact. Therefore, the air passes through the pipette 200 and enters the liquid storage chamber 600 through the air gap channel 14 and the water storage tank 13, thereby maintaining the air pressure in the liquid storage chamber 600 in balance with the external ambient pressure.
[0045] The pen barrel 200 may be an integrated pen barrel 200, such as Figure 7 As shown, it can also be a split pen barrel 200, such as Figures 4 to 6 The split pen barrel 200 includes a front pen barrel 210 and a rear pen barrel 220 that are sealed together. The pen tip 500 is fixed to the front end of the front pen barrel 210. The water reservoir 100 is fixed within the front pen barrel 210. The rear pen barrel 220 is provided with a liquid storage chamber 600. The distal end of the liquid guide core tube 11 of the water reservoir 100 is in communication with the liquid storage chamber 600.
[0046] In this embodiment, the working principle, usage method and beneficial effects of the water reservoir 100 in the straight liquid acrylic pen are the same as those described in Example 1 and will not be repeated here.
[0047] The above description is only a specific embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.
Claims
1. A water reservoir for a straight liquid pen, characterized by: It includes a water reservoir body and a liquid suction cylinder. The water reservoir body includes a liquid conduction core tube and a plurality of convex rings spaced apart along the length direction of the liquid conduction core tube. The convex rings are arranged on the upper part of the outer periphery of the liquid conduction core tube and an annular water storage groove is formed between two adjacent convex rings. Each of the convex rings is provided with an air gap channel. The liquid suction cylinder is sleeved on the outer periphery of the liquid conduction core tube and is located below the plurality of convex rings. A through hole for accommodating a liquid conduction rod is provided in the liquid conduction core tube along its length direction.
2. The water reservoir for a straight liquid pen according to claim 1, characterized in that: It also includes a liquid inlet end, which is arranged on the surface of the outermost convex ring. The liquid inlet end includes a limit plate arranged horizontally and parallel above the outermost convex ring and two connecting plates fixed vertically between the outermost convex ring and the limit plate. The two connecting plates are symmetrically arranged on both sides of the through hole. A liquid inlet is formed between the limit plate, the outermost convex ring and the two connecting plates; a circular hole is provided in the center of the limit plate that passes through the limit plate.
3. The water reservoir for a straight liquid pen according to claim 1, characterized in that: The end of the liquid-guiding core tube away from the convex ring is located in the liquid-pipetting cylinder.
4. The water reservoir for a straight liquid pen according to claim 1, characterized in that: The thickness of the convex ring is ≥0.5 mm.
5. The water reservoir for a straight liquid pen according to claim 1, characterized in that: The liquid-conducting core tube and the plurality of convex rings are integrally formed.
6. The water reservoir for a straight liquid pen according to claim 1, characterized in that: The liquid-absorbing cylinder is made of breathable hollow cotton.
7. The water reservoir for a straight liquid pen according to claim 1, characterized in that: The air gap channels on each of the convex rings are all or partially staggered.
8. A straight liquid acrylic pen, comprising a pen barrel, a pen cap, a liquid guide rod, and a pen tip integrally formed with the liquid guide rod or formed separately, with the rear end abutting the front end of the liquid guide rod, the pen barrel having a liquid storage chamber, the pen tip being fixed to the front end of the pen barrel, and the pen cap being sleeved on the front portion of the pen barrel, characterized in that: It also includes the water reservoir of any one of claims 1 to 5, wherein the water reservoir is fixed in the pen tube, the liquid guide rod is arranged in the liquid guide core tube of the water reservoir, the end of the pen tip is tightly attached to the liquid pipette, and the end of the liquid guide core tube of the water reservoir is connected to the liquid storage cavity.
9. The straight liquid acrylic pen according to claim 8, characterized in that: The pen-proximal tip of the liquid-absorbing cylinder is tightly fitted with the inner wall of the pen tube.
10. The straight liquid acrylic pen according to claim 8, characterized in that: The pen tube is a split pen tube, including a front pen tube and a rear pen tube that are sealed and connected to each other. The pen tip is fixed to the front end of the front pen tube, the water reservoir is fixed in the front pen tube, and a liquid storage cavity is provided in the rear pen tube. The end of the liquid guide core tube of the water reservoir is connected to the liquid storage cavity.