Safe and leakproof piston type pen

Abstract

The utility model relates to the technical field of piston type pens, and discloses a safe leakproof piston type pen which comprises a connecting shell, a fixing block and a holding block, the top of the connecting shell is fixedly connected with a fixing shell, piston assemblies are arranged on the inner sides of the connecting shell and the fixing shell, a leakproof assembly is arranged on the top of the connecting shell, and the holding block is fixedly connected with the connecting shell. An installation assembly is arranged on the outer side of the fixing block, and a protection shell assembly is arranged on the outer side of the fixing block and the outer side of the holding block. The piston assembly comprises a connecting rod, the connecting rod is connected to the inner side of the connecting shell in a sliding mode, a sliding groove is formed in the inner side of the fixing shell, and the connecting rod is connected to the inner side of the sliding groove in a sliding mode. When the pen needs to be inked, only the connecting rod needs to be operated to slide in the sliding groove, the sealing piston is driven to move, and ink suction is achieved through the air pressure difference. And a user can finish inking without complicated steps, so that the inking difficulty is reduced, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of piston-type fountain pen technology, and in particular to a safe and leak-proof piston-type fountain pen. Background Technology

[0002] The leak-proof piston pen is a meticulously designed writing instrument, with a precise and unique piston structure at its core. This piston structure mainly consists of a highly wear-resistant piston rod, a piston head with strong flexibility and sealing performance, and a matching sealing component.

[0003] A search revealed Chinese Patent Publication No. CN206186601U, which discloses a safe and leak-proof piston-type fountain pen. The pen includes a barrel containing a piston, a piston rod, and a rotating rod for rotating the piston rod. One end of the piston rod is connected to the piston, and the other end is connected to the rotating rod. One end of the pen barrel is connected to the pen tip, and the other end is connected to a rotating cap. The rotating cap is fitted onto the rotating rod and connected to the pen barrel via a tail ring, which secures the rotating rod within the pen barrel. The rotating cap and tail ring are rotatably connected, driving the rotating rod to rotate and causing the piston connected to the piston rod to move between an upward and downward state. This invention effectively improves ink-filling efficiency and prevents accidental operation of the piston rod during use, thus enhancing safety.

[0004] While the aforementioned technical solution effectively prevents ink leakage by relying on a rotating piston, the sealing rubber ring on the piston gradually wears down with prolonged use, leading to a decrease in sealing performance. Once the seal fails, ink will leak out through the gap between the piston and the pen barrel. Furthermore, it's difficult to maintain a consistent rotation amplitude each time; sometimes too much rotation results in excessive ink intake, increasing the pen's weight and causing leakage due to excessive internal pressure; other times too little rotation leads to insufficient ink, causing the writing to stop after a short time, affecting writing continuity and efficiency. Therefore, a safe and leak-proof piston-type fountain pen is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a safe and leak-proof piston-type fountain pen, which aims to improve the problems of ink leakage and inaccurate ink intake that occur after prolonged use in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A safe and leak-proof piston-type fountain pen includes a connecting shell, a fixing block, and a gripping block. The top of the connecting shell is fixedly connected to the fixing shell. A piston assembly is provided on the inner side of the connecting shell and the fixing shell. A leak-proof assembly is provided on the top of the connecting shell. An installation assembly is provided on the outer side of the fixing block. A protective shell assembly is provided on the outer side of the fixing block and the gripping block.

[0008] The piston assembly includes a connecting rod that is slidably connected to the inner side of the connecting shell. A groove is provided on the inner side of the fixed shell, and the connecting rod is slidably connected to the inner side of the groove. A sealing piston is fixedly connected to the end of the connecting rod, and the sealing piston is slidably connected to the inner side of the connecting shell. A sliding block is fixedly connected to the end of the connecting rod, and the sliding block is slidably connected to the inner side of the groove.

[0009] As a further description of the above technical solution:

[0010] The leak-proof component includes a funnel-shaped scraper block, which is fixedly connected to the inner side of the end of the connecting shell, and the connecting rod is slidably connected to the inner side of the end of the funnel-shaped scraper block.

[0011] As a further description of the above technical solution:

[0012] The protective shell assembly includes a shell, which is disposed on the outside of the fixing block, the connecting shell, and the fixing shell. A pen tip is fixedly connected to the bottom of the grip block, and a cap is provided on the outside of the grip block and the pen tip.

[0013] As a further description of the above technical solution:

[0014] The mounting assembly includes threads, two of which are located on the outer side of the fixing block and the inner side of the end of the housing, and the two threads are rotatably connected to each other on the side.

[0015] As a further description of the above technical solution:

[0016] A rubber block is fixedly connected to the inner side of the bottom of the cap, and the bottom of the pen tip is slidably connected to the inner side of the rubber block.

[0017] As a further description of the above technical solution:

[0018] The grip block is covered with a soft rubber pad, and a pen clip is fixedly connected to the outer end of the cap.

[0019] As a further description of the above technical solution:

[0020] An observation window is fixedly connected to the inner side of the end of the connecting shell;

[0021] As a further description of the above technical solution:

[0022] The bottom of the connecting shell, as well as the inner sides of the fixing block, the gripping block, and the pen tip, are all provided with flow channels.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this invention, when the pen needs to be filled with ink, simply slide the connecting rod within the groove to move the sealing piston, utilizing the air pressure difference to draw in ink. Users can complete the filling process without complicated steps, reducing the difficulty of filling and improving ease of use. The sliding block at the end of the connecting rod slides within the groove, ensuring the stability and accuracy of the connecting rod's movement. This makes the movement of the sealing piston within the connecting housing smoother, allowing for precise control of the ink volume and avoiding problems of over- or under-inking caused by unstable piston movement, ensuring that the appropriate ink storage amount is achieved each time.

[0025] 2. In this invention, the funnel-shaped scraper can scrape off the ink adhering to the surface of the connecting rod as it moves up and down, preventing ink from flowing out of the connecting shell along the connecting rod. This reduces the risk of ink leakage caused by ink on the connecting rod at the source, enhancing the pen's leak-proof performance and keeping the pen's exterior clean. The rubber block on the inner side of the cap's bottom fits tightly against the pen nib, forming an effective seal. When the pen is not in use, it prevents ink leakage from the nib, improving the pen's safety and practicality. Attached Figure Description

[0026] Figure 1 A three-dimensional schematic diagram of a safe and leak-proof piston-type fountain pen proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the rubber block in a safe and leak-proof piston-type fountain pen proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the observation window of a safe and leak-proof piston-type fountain pen proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the flow channel of a safe and leak-proof piston-type fountain pen proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the funnel-shaped scraper of a safe and leak-proof piston-type fountain pen proposed in this utility model.

[0031] Legend:

[0032] 1. Housing; 2. Cap; 3. Fixed housing; 4. Connecting housing; 5. Observation window; 6. Connecting rod; 7. Sealing piston; 8. Fixing block; 9. Thread; 10. Grip block; 11. Soft rubber pad; 12. Pen tip; 13. Rubber block; 14. Sliding block; 15. Slide groove; 16. Funnel-shaped scraper; 17. Flow channel; 18. Pen clip. Detailed Implementation

[0033] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 The present invention provides an embodiment of a safe and leak-proof piston-type fountain pen, comprising a connecting shell 4, a fixing block 8, and a gripping block 10. A fixing shell 3 is fixedly connected to the top of the connecting shell 4. A piston assembly is provided on the inner side of the connecting shell 4 and the fixing shell 3. A leak-proof assembly is provided on the top of the connecting shell 4. An installation assembly is provided on the outer side of the fixing block 8. A protective shell assembly is provided on the outer side of the fixing block 8 and the gripping block 10.

[0035] The piston assembly includes a connecting rod 6, which is slidably connected to the inner side of the connecting shell 4. A groove 15 is provided on the inner side of the fixed shell 3, and the connecting rod 6 is slidably connected to the inner side of the groove 15. The groove 15 restricts the movement trajectory of the connecting rod 6, ensuring that the connecting rod 6 can only move along the path specified by the groove 15, thus guaranteeing the stability and accuracy of the movement. A sealing piston 7 is fixedly connected to the end of the connecting rod 6, and the sealing piston 7 is slidably connected to the inner side of the connecting shell 4. When the sealing piston 7 moves upward, the space below the sealing piston 7 within the connecting shell 4 gradually increases. A sliding block 14 is fixedly connected to the end of the connecting rod 6, and the sliding block 14 is slidably connected to the inner side of the groove 15. Because the groove 15 is provided on the inner side of the fixed shell 3, the groove 15 plays a crucial guiding role, restricting the movement trajectory of the connecting rod 6 and ensuring that the connecting rod 6 can only move along the path specified by the groove 15, thus guaranteeing the stability and accuracy of the movement. An observation window 5 is fixedly connected to the inner side of the end of the connecting shell 4. The amount of ink drawn in can be observed through the observation window 5 on the inner side of the end of the connecting shell 4, so as to control the degree of ink application.

[0036] Reference Figure 2 , Figure 3 and Figure 5The leak-proof component includes a funnel-shaped scraper 16, which is fixedly connected to the inner side of the end of the connecting housing 4, and a connecting rod 6 is slidably connected to the inner side of the end of the funnel-shaped scraper 16. When ink adheres to the surface of the connecting rod 6, the funnel-shaped scraper 16 will scrape the ink off, preventing the ink from flowing out of the connecting housing 4 along the connecting rod 6, thus avoiding external ink leakage.

[0037] Reference Figure 1 and Figure 2 The protective shell assembly includes a shell 1, which is disposed outside the fixing block 8, connecting shell 4, and fixing shell 3. A pen tip 12 is fixedly connected to the bottom of the grip block 10, and a cap 2 is disposed on the outside of the grip block 10 and the pen tip 12. The shell 1 encloses the fixing block 8, connecting shell 4, and fixing shell 3, thus protecting the internal components. A rubber block 13 is fixedly connected to the inner bottom of the cap 2, and the bottom of the pen tip 12 is slidably connected to the inner side of the rubber block 13. When the pen is not in use, the cap 2 is placed over the grip block 10 and the pen tip 12. At this time, the rubber block 13 on the inner bottom of the cap 2 fits tightly against the pen tip 12, forming a sealed structure that effectively prevents ink leakage from the pen tip 12.

[0038] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 The mounting components include two threads 9, one on the outer side of the fixing block 8 and the other on the inner side of the end of the housing 1. The two threads 9 are rotatably connected to each other on the side. By rotating the fixing block 8 or the housing 1, the two threads 9 are rotatably connected to each other, thus tightly connecting the fixing block 8 and the housing 1 together, completing the pen assembly. This method facilitates disassembly and maintenance. A soft rubber pad 11 is fitted on the outer side of the grip block 10, and a pen clip 18 is fixedly connected to the outer side of the end of the cap 2. The pen clip 18 on the outer side of the end of the cap 2 allows the user to easily clip the pen into a clothing pocket or notebook for easy carrying. A flow channel 17 is provided on the bottom of the connecting housing 4 and on the inner sides of the fixing block 8, grip block 10, and pen tip 12. The flow channel 17 on the pen tip 12, grip block 10, fixing block 8, and the bottom of the connecting housing 4 facilitates the intake of ink into the connecting housing 4, completing the ink filling operation.

[0039] Working principle: When ink needs to be applied, the connecting rod 6 is pulled upwards, causing it to slide within the groove 15 on the inner side of the connecting shell 4 and the fixed shell 3. As the connecting rod 6 slides upwards, the sealing piston 7, which is fixed to it, also moves upwards inside the connecting shell 4. Because the sealing piston 7 is tightly fitted to the inner wall of the connecting shell 4, the space below the sealing piston 7 increases and the air pressure decreases when the sealing piston 7 moves upwards. Under atmospheric pressure, the ink is drawn into the connecting shell 4 through the pen tip 12, the grip block 10, the fixed block 8, and the flow channel 17 at the bottom of the connecting shell 4, completing the ink application process.

[0040] The housing 1, located on the outside of the fixing block 8, connecting shell 4, and fixing shell 3, protects the internal piston assembly and ink storage space, preventing damage to the pen from external impacts. The cap 2, covering the outside of the grip block 10 and the pen nib 12, further protects the pen nib 12 from damage.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safe and leak-proof piston-type fountain pen, comprising a connecting shell (4), a fixing block (8), and a gripping block (10), characterized in that: The top of the connecting shell (4) is fixedly connected to the fixing shell (3), and the inner sides of the connecting shell (4) and the fixing shell (3) are provided with piston assemblies. The top of the connecting shell (4) is provided with a leak-proof assembly. The outer side of the fixing block (8) is provided with an installation assembly. The outer side of the fixing block (8) and the gripping block (10) is provided with a protective shell assembly. The piston assembly includes a connecting rod (6) which is slidably connected to the inner side of the connecting shell (4). The inner side of the fixed shell (3) is provided with a sliding groove (15). The connecting rod (6) is slidably connected to the inner side of the sliding groove (15). A sealing piston (7) is fixedly connected to the end of the connecting rod (6). The sealing piston (7) is slidably connected to the inner side of the connecting shell (4). A sliding block (14) is fixedly connected to the end of the connecting rod (6). The sliding block (14) is slidably connected to the inner side of the sliding groove (15).

2. The safe and leak-proof piston-type fountain pen according to claim 1, characterized in that: The leak-proof component includes a funnel-shaped scraper (16), which is fixedly connected to the inner side of the end of the connecting shell (4), and the connecting rod (6) is slidably connected to the inner side of the end of the funnel-shaped scraper (16).

3. The safe and leak-proof piston-type fountain pen according to claim 1, characterized in that: The protective shell assembly includes a shell (1), which is disposed on the outside of the fixing block (8), the connecting shell (4) and the fixing shell (3). A pen tip (12) is fixedly connected to the bottom of the gripping block (10), and a cap (2) is disposed on the outside of the gripping block (10) and the pen tip (12).

4. A safe and leak-proof piston-type fountain pen according to claim 1, characterized in that: The mounting assembly includes threads (9), both of which are located on the outside of the fixing block (8) and the inside of the end of the housing (1), and both threads (9) are rotatably connected to each other on the side.

5. A safe and leak-proof piston-type fountain pen according to claim 3, characterized in that: A rubber block (13) is fixedly connected to the inner side of the bottom of the cap (2), and the bottom of the pen tip (12) is slidably connected to the inner side of the rubber block (13).

6. A safe and leak-proof piston-type fountain pen according to claim 3, characterized in that: The grip block (10) is covered with a soft rubber pad (11), and the cap (2) is fixedly connected to a pen clip (18) on the outer side of its end.

7. A safe and leak-proof piston-type fountain pen according to claim 1, characterized in that: An observation window (5) is fixedly connected to the inner side of the end of the connecting shell (4).

8. A safe and leak-proof piston-type fountain pen according to claim 1, characterized in that: The bottom of the connecting shell (4) and the inner sides of the fixing block (8), the gripping block (10) and the pen tip (12) are all provided with flow channels (17).

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