Ball-point pen cap convenient to disassemble and use
By designing a ballpoint pen cap with a pressure limit and a movable silicone sealing ring, the problems of difficult cap removal and poor ink flow were solved, enabling quick separation of the cap from the pen body and smooth ink flow.
Patent Information
- Application Number
- CN202520480982.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-19
AI Technical Summary
The existing ballpoint pen caps are too tight, making them difficult to disassemble quickly, and the silicone sealing ring is too tight against the pen tip, affecting ink output efficiency.
Design a ballpoint pen cap that is easy to disassemble, using a pneumatic limiting structure and a movable silicone sealing ring. The cap can be quickly separated from the pen body by pulling a plate, and the ink can be dispensed by rotating piston B to drive the silicone pad.
It enables quick disassembly and disassembly of the pen cap and body, as well as ink dispensing, improving efficiency and avoiding the problem of ink not dispensing for extended periods.
Smart Images

Figure CN223864589U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ball pen technical field more specifically, the utility model relates to a ball pen cover convenient to disassemble and use. BACKGROUND
[0002] The pen cover of the ball pen realizes the pollution prevention and scratch prevention by wrapping the pen point, some high-end pen covers are internally provided with a silica gel sealing ring to reduce ink evaporation and prevent dust from entering the pen point oil guide groove, and ensure that the ball pen can still be smoothly written after long-term storage.
[0003] The existing pen cover has certain defects, when the pen cover is separated from the tip of the ball pen, the ball pen cover cannot be quickly separated because the clamping is too tight, and the silica gel sealing ring internally provided in the high-end pen cover is too tightly attached to the ball point, so that the ball pen cannot smoothly discharge ink, resulting in a decrease in use efficiency. UTILITY MODEL CONTENT
[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of the utility model provide a ball pen cover convenient to disassemble and use, which can quickly separate the pen cover from the ball pen through air pressure limiting, and the silica gel sealing ring is movably arranged, so that the ball pen can discharge ink regularly by rotating the silica gel sealing ring, thereby improving the use efficiency and solving the problems existing in the prior art.
[0005] To solve the above technical problems, the utility model provides the following technical scheme: a ball pen cover convenient to disassemble and use, comprising a ball pen, a circumference surface of the ball pen is provided with an anti-skid groove, an internal portion of the anti-skid groove is provided with a limiting opening, a top portion of the ball pen is provided with a pen cover, an internal portion of the pen cover is provided with a movable piece; the pen cover comprises a moving opening and a pull plate, the top portion of the pen cover is fixedly installed with the moving opening, the internal portion of the moving opening is movably installed with the pull plate, and the top portion of the pull plate is movably installed with a rotating plate.
[0006] The internal portion of the moving opening is filled with nitrogen, the top portion of the nitrogen is connected with a piston A in a matched mode, the top portion of the piston A is connected with a spring in a matched mode, the outer wall of the spring is wound with a telescopic rod, the top portion of the telescopic rod is fixedly installed with the pull plate, and the outer wall of the telescopic rod and the internal portion of the moving opening are movably sleeved.
[0007] The bottom portion of the moving opening is fixedly connected with an exhaust pipe on both sides, the exhaust pipe is inlaidly installed in the internal portion of the pen cover, the bottom portion of the exhaust pipe is movably sleeved with a squeeze plug, the outer wall of the squeeze plug is fixedly connected with a moving pipe, and the end, away from the squeeze plug, of the moving pipe is fixedly connected with a limiting block.
[0008] The movable component includes a connecting rod, a sleeve, piston B, a silicone pad, and an anti-slip groove. The connecting rod is fixedly installed at the bottom of the rotating plate, and a cover plate is fixedly installed on the outer wall of the connecting rod. The bottom of the cover plate fits into the connecting sleeve. The bottom of the connecting rod passes through the sleeve and is fixedly connected to piston B. A silicone pad is fixedly installed inside piston B, and an anti-slip groove is fixedly installed inside the silicone pad.
[0009] The piston A has a connection port inside, which passes through the telescopic rod and the pull plate, and the inside of the connection port is movably connected to the outer wall of the connecting rod.
[0010] The movement port has a limiting cavity inside, a sleeve is fixedly connected to the bottom of the limiting cavity, and a piston A and a telescopic rod are movably sleeved at the top of the limiting cavity, with a spring located inside the movement port.
[0011] The diameter of the limiting block and the interior of the limiting opening are mutually adapted, and the interior of the pen cap and the outer wall of the ballpoint pen are mutually adapted.
[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:
[0013] 1. In the above solution, by setting a pen cap, the nitrogen gas can be compressed by pulling the pull plate, thereby canceling the limit. This allows the ballpoint pen and pen cap to detach quickly. When the limit is required, the ballpoint pen and pen cap can be interlocked inside each other and the pull plate can be released. This causes the gas to be compressed quickly and push the limit block out and embedded inside the limit opening, thereby playing the role of limit.
[0014] 2. In the above solution, by setting up a movable part, the piston B and the silicone pad are made to move. When the ball and the silicone pad rub against each other, ink can be dispensed periodically, thereby extending the working efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the overall two-dimensional structure inside the pen cap of this utility model;
[0017] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the connecting rod of this utility model;
[0018] Figure 4 This is a schematic diagram of the overall structure of the bottom of the telescopic rod of this utility model.
[0019] [Figure Labels]
[0020] 1. Ballpoint pen; 2. Anti-slip groove; 3. Limiting port; 4. Pen cap; 5. Movement port; 6. Pull plate; 7. Rotating plate; 8. Telescopic rod; 9. Spring; 10. Piston A; 11. Nitrogen gas; 12. Connecting rod; 13. Sleeve; 14. Piston B; 15. Exhaust pipe; 16. Squeezing plug; 17. Movement tube; 18. Limiting block; 19. Cover plate; 20. Silicone pad; 21. Anti-slip groove; 22. Connection port. Detailed Implementation
[0021] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.
[0022] Example 1:
[0023] Please see Figures 1-4 A ballpoint pen cap that is easy to disassemble and use includes a ballpoint pen 1. The circumferential surface of the ballpoint pen 1 is provided with an anti-slip groove 2. The anti-slip groove 2 is provided with a limiting port 3. The top of the ballpoint pen 1 is provided with a pen cap 4. The pen cap 4 is provided with a movable part inside. The pen cap 4 includes a movement port 5 and a pull plate 6. The movement port 5 is fixedly installed on the top of the pen cap 4. The pull plate 6 is movably installed inside the movement port 5. The top of the pull plate 6 is movably installed with a rotating plate 7.
[0024] Benefits: By setting up the pen cap 4, when it is necessary to remove the pen cap 4, the entire pull plate 6 can be pulled upwards, which allows the gas to be quickly recovered into the interior of the moving port 5. At this time, the limiting energy can be removed, so that the pen cap 4 and the ballpoint pen 1 can be quickly disassembled. At the same time, the ball bearing at the top of the ballpoint pen 1 can be rotated by the movable part, so that ink can be dispensed, avoiding the problem of not dispensing ink for a long time.
[0025] Example 2:
[0026] Please see Figure 2 The interior of the movement port 5 is filled with nitrogen gas 11. A piston A10 is attached to the top of the nitrogen gas 11. A spring 9 is attached to the top of the piston A10. A telescopic rod 8 is wrapped around the outer wall of the spring 9. A pull plate 6 is fixedly installed on the top of the telescopic rod 8. The outer wall of the telescopic rod 8 is movably connected to the interior of the movement port 5. Exhaust pipes 15 are fixedly connected to both sides of the bottom of the movement port 5. The exhaust pipes 15 are embedded in the interior of the pen cap 4. A squeeze plug 16 is movably connected to the bottom of the exhaust pipe 15. A movement tube 17 is fixedly connected to the outer wall of the squeeze plug 16. A limit block 18 is fixedly connected to the end of the movement tube 17 away from the squeeze plug 16.
[0027] Benefits: When the pen cap 4 needs to be removed from the outer wall of the ballpoint pen 1, the pull plate 6 can be slowly pulled upwards. This causes the piston A10, which is fixedly connected to the bottom of the pull plate 6, to move upwards inside the movement port 5. The movement causes the piston A10 to compress the spring 9 sleeved on the telescopic rod 8. When the spring 9 is compressed, it will initially store force. At the same time, the bottom of the piston A10 will generate suction during its upward movement, drawing the gas stored inside the exhaust pipe 15 into the movement port 5. At this time, due to the suction, the compression plug 16 will be pulled into the exhaust pipe 15, causing the extended movement pipe 17 to retract to its original position. Similarly, the limiting block 18 will disengage from the limiting port 3 opened inside the anti-slip groove 2, which causes the limiting force to be reduced. The limit switch between the pen cap 4 and the ballpoint pen 1 can be quickly released, allowing the ballpoint pen 1 to be removed from the inside of the pen cap 4. When it is necessary to lock the ballpoint pen 1 and the pen cap 4 together, the action of pulling the pull plate 6 is repeated. Then, the ballpoint pen 1 is placed into the inside of the pen cap 4. At this time, the pull plate 6 is released, causing the squeezed spring 9 to reset. During the reset process, the piston A10 is pushed down, which squeezes the nitrogen gas 11 to deliver the excess gas to the inside of the exhaust pipe 15. This gas pressure can push out the squeeze plug 16, so that the moving tube 17 and the limit block 18 fixedly connected to the outer wall of the squeeze plug 16 are embedded in the inside of the limit port 3, thereby playing a limiting role and preventing detachment during the protection process.
[0028] Example 3:
[0029] Please see Figure 1 , Figure 4 , Figure 3 The movable parts include a connecting rod 12, a sleeve 13, a piston B14, a silicone pad 20, and an anti-slip groove 21. The connecting rod 12 is fixedly installed at the bottom of the rotating plate 7. A cover plate 19 is fixedly installed on the outer wall of the connecting rod 12. The bottom of the cover plate 19 fits against the connecting sleeve 13. The bottom of the connecting rod 12 passes through the sleeve 13 and is fixedly connected to the piston B14. The silicone pad 20 is fixedly installed inside the piston B14. The anti-slip groove 21 is fixedly installed inside the silicone pad 20. A connecting port 22 is opened inside the piston A10. The connecting port 22 passes through the telescopic rod 8 and the pull plate 6. The inside of the connecting port 22 and the outer wall of the connecting rod 12 are movably sleeved. A limiting cavity is opened inside the moving port 5. The bottom of the limiting cavity is fixedly connected to the sleeve 13. The top of the limiting cavity is movably sleeved to the piston A10 and the telescopic rod 8. The spring 9 is located inside the moving port 5. The diameter of the limiting block 18 and the inside of the limiting port 3 are mutually adapted. The inside of the pen cap 4 and the outer wall of the ballpoint pen 1 are mutually adapted.
[0030] Benefits: When using moving parts, it is essential to ensure that the ballpoint pen's roller is in contact with the bottom of piston B14. The rotating plate 7 can then be rotated with a finger. During this rotation, the connecting rod 12, fixedly connected to the bottom of the rotating plate 7, will cause piston B14 to rotate. Simultaneously, the silicone pad 20 inside piston B14 will cause the in contacting roller to rotate, allowing ink to flow and preventing prolonged ink drying and poor ink flow. It should be noted that the sleeve 13 is fixedly installed inside the limiting cavity and fits snugly against the connecting rod 12, providing a seal and preventing leakage during the compression of nitrogen gas 11 by piston A10. Furthermore, the connecting port 22 passes through piston A10, telescopic rod 8, and pull plate 6, facilitating compatibility with the connecting rod 12. This allows the telescopic rod 8 to extend and retract freely, while preventing gas leakage from the connecting port 22 during the connection process.
[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0033] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A ballpoint pen cap that is easy to disassemble and use, comprising a ballpoint pen (1), characterized in that, The ballpoint pen (1) has an anti-slip groove (2) on its circumferential surface. The anti-slip groove (2) has a limiting opening (3) inside. The ballpoint pen (1) has a pen cap (4) on its top. The pen cap (4) has a movable part inside. The pen cap (4) includes a movement port (5) and a pull plate (6). The movement port (5) is fixedly installed on the top of the pen cap (4). The pull plate (6) is movably installed inside the movement port (5). A rotating plate (7) is movably installed on the top of the pull plate (6).
2. The ballpoint pen cap for easy disassembly and use according to claim 1, characterized in that, The interior of the movement port (5) is filled with nitrogen gas (11). A piston A (10) is attached to the top of the nitrogen gas (11). A spring (9) is attached to the top of the piston A (10). A telescopic rod (8) is wound around the outer wall of the spring (9). A pull plate (6) is fixedly installed on the top of the telescopic rod (8). The outer wall of the telescopic rod (8) and the interior of the movement port (5) are movably connected.
3. The ballpoint pen cap for easy disassembly and use according to claim 2, characterized in that, Both sides of the bottom of the moving port (5) are fixedly connected to exhaust pipes (15). The exhaust pipes (15) are embedded in the inside of the pen cap (4). The bottom of the exhaust pipe (15) is movably sleeved with a squeeze plug (16). The outer wall of the squeeze plug (16) is fixedly connected to a moving pipe (17). The end of the moving pipe (17) away from the squeeze plug (16) is fixedly connected to a limit block (18).
4. The ballpoint pen cap for easy disassembly and use according to claim 1, characterized in that, The movable parts include a connecting rod (12), a sleeve (13), a piston B (14), a silicone pad (20), and an anti-slip groove (21). The connecting rod (12) is fixedly installed at the bottom of the rotating plate (7). A cover plate (19) is fixedly installed on the outer wall of the connecting rod (12). The bottom of the cover plate (19) is attached to the connecting sleeve (13). The bottom of the connecting rod (12) passes through the sleeve (13) and is fixedly connected to the piston B (14). The silicone pad (20) is fixedly installed inside the piston B (14). The anti-slip groove (21) is fixedly installed inside the silicone pad (20).
5. The ballpoint pen cap for easy disassembly and use according to claim 2, characterized in that, The piston A (10) has a connection port (22) inside. The connection port (22) passes through the telescopic rod (8) and the pull plate (6), and the inside of the connection port (22) is movably connected to the outer wall of the connecting rod (12).
6. The ballpoint pen cap for easy disassembly and use according to claim 2, characterized in that, A limiting cavity is provided inside the movement port (5). A sleeve (13) is fixedly connected to the bottom of the limiting cavity. A piston A (10) and a telescopic rod (8) are movably sleeved at the top of the limiting cavity, and a spring (9) is located inside the movement port (5).
7. The ballpoint pen cap for easy disassembly and use according to claim 3, characterized in that, The diameter of the limiting block (18) and the interior of the limiting port (3) are adapted to each other, and the interior of the pen cap (4) and the outer wall of the ballpoint pen (1) are adapted to each other.