A leak-proof marker
The design of the adjustment and ink control sections solves the problem of ink leakage when the marker is squeezed or impacted from the outside, achieving stable control of the ink channel and protection of the pen tip, thus improving the practicality and service life of the marker.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU WENTAI PEN IND
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
AI Technical Summary
Existing markers are prone to ink leakage when subjected to external pressure or impact.
Through the design of the adjustment section and the ink control section, the pen tip is separated from the inner shell flow port when not in use, and in contact when in use, so as to achieve complete closure and stable opening of the ink channel. The fixed ring plate and spring provide elastic restoring force to ensure the pen tip returns to its original position.
It effectively avoids ink leakage caused by squeezing or impact when not in use, meets the writing needs of thick and thin lines, improves practicality, and extends the life of the pen.
Smart Images
Figure CN224276683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marker technology, and more specifically to a leak-proof marker. Background Technology
[0002] A marker pen is a pen that can write marks or symbols on one or more materials such as paper, wood, metal, plastic, and enamel. A conventional marker pen generally includes a barrel and a nib. The barrel stores ink, and the nib is located in the barrel. The nib is a rod-shaped fiber bundle body, with one end of the nib extending into the ink in the barrel and the other end extending out for writing. The function of preventing ink leakage is very important for marker pens. Therefore, the prior art disclosed in CN215621025U is a leak-proof marker pen with a double ball structure. It has a simple and compact overall structure, low cost, and a ball-type ink dispensing structure, providing a good writing experience and a good leak-proof structure. However, when the double ball of the pen tip is subjected to external pressure or impact, the spring will be compressed, causing ink leakage. Therefore, this application proposes a leak-proof marker pen. Utility Model Content
[0003] The purpose of this invention is to provide a leak-proof marker pen that can effectively solve the problem of ink leakage caused by external pressure or impact.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A leak-proof marker pen includes a main shell, an ink cartridge, a pen tip, a pen nib, and a pen cap. The main shell is composed of a first pen shell and a second pen shell, which are threaded together by an external thread and an internal thread. The pen nib is rotatably connected to both ends of the main shell through adjusting parts. An ink cartridge is fixed inside the main shell. Ink control parts are provided on both sides of the ink cartridge. The ink control parts include an inner shell fixed to the inside of the ink cartridge and an outer shell fixed to the outside of the ink cartridge. The inner shell has several flow ports. A sealing part is provided at one end of the pen tip. The sealing part passes through the perforations of the outer shell and the ink cartridge in sequence and abuts against the bottom of the inner shell. The adjusting part includes a first ring fixed to the pen nib and a second ring fixed to the main shell. The inner sides of the first ring have sliding grooves, and the outer sides of the second ring have locking blocks fixed. The locking blocks are movable and locked in the corresponding sliding grooves. The upper and lower ends of the sliding grooves are respectively connected to a first locking groove and a second locking groove.
[0006] By adopting the above technical solution, this utility model has the following advantages:
[0007] The adjustment and ink control parts of this invention allow the pen tip to be separated from the inner shell's flow port when not in use, through the cooperation of the locking block and the sliding groove. When in use, the pen tip contacts the inner shell's flow port, achieving complete closure and stable opening of the ink channel, thereby effectively preventing ink leakage caused by squeezing or impact when not in use.
[0008] Furthermore, the main shell has a fixing ring plate 1 on both sides, and the ink sac has a fixing ring plate 2 on both sides, with the fixing ring plate 1 abutting against the corresponding fixing ring plate 2.
[0009] By adopting the above technical solution, this utility model has the following advantages:
[0010] The fixing ring plate one and fixing ring plate two of this utility model can fix the ink bladder and limit the axial movement of the ink bladder.
[0011] Furthermore, each of the pen tips is fixedly provided with a fixing ring plate three. The fixing ring plate one is provided with a spring groove one on one side corresponding to the fixing ring plate three, and the fixing ring plate three is provided with a spring groove two on one side corresponding to the fixing ring plate one. A spring is sleeved outside the ink sac between the fixing ring plate one and the fixing ring plate three, and the two ends of the spring are locked in the corresponding spring groove one and spring groove two.
[0012] By adopting the above technical solution, this utility model has the following advantages:
[0013] The spring in this invention provides a certain elastic restoring force. Combined with the locking block and sliding groove, it ensures that the pen tip can be reset when the pen is changed from the used state to the unused state.
[0014] Furthermore, the pen tip includes a fine pen tip and a coarse pen tip, and the side of the pen tip away from the sealing part extends through the fixing part fixed inside the pen head to the outside of the pen head.
[0015] By adopting the above technical solution, this utility model has the following advantages:
[0016] The fine and coarse nibs of this invention can meet the writing needs of lines of varying thicknesses. Users can use one nib as needed without changing pens, thus improving practicality.
[0017] Furthermore, the pen tip is fitted with a pen cap, the pen cap has a protective block inside, the protective block has a protective groove that matches the corresponding pen tip, and the pen tip is fitted into the corresponding protective groove.
[0018] By adopting the above technical solution, this utility model has the following advantages:
[0019] The protective block and protective groove of this utility model can effectively protect the pen tip, prevent the pen tip from being deformed or damaged due to collision or friction during storage, and effectively extend the service life of this utility model. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1This is a front view cross-sectional diagram of the unused state of this utility model;
[0022] Figure 2 This is a front view cross-sectional structural diagram of the present invention in use.
[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0024] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B;
[0025] Figure 5 for Figure 1 A top view of the cross-sectional structure of the locking block in the middle ring 1 and ring 2;
[0026] Figure 6 This utility model Figure 2 Enlarged structural diagram at point C;
[0027] Figure 7 This utility model Figure 1 Enlarged structural diagram at point D.
[0028] Reference numerals: 1. Pen casing one; 101. External threaded part; 102. Ring sleeve one; 2. Pen casing two; 201. Internal threaded part; 202. Ring sleeve two; 3. Pen tip; 4. Protective block; 401. Protective groove; 5. Inner shell; 501. Flow port; 6. Ink sac; 601. Perforation; 7. Slide groove; 701. Slot one; 702. Slot two; 8. Fixing ring plate three; 801. Spring groove two; 9. Fixing ring plate one; 901. Spring groove one; 10. Pen cap; 11. Fine nib; 12. Coarse nib; 13. Fixing part; 14. Sealing part; 15. Outer shell; 16. Fixing ring plate two; 17. Locking block; 18. Spring. Detailed Implementation
[0029] like Figures 1 to 7As shown in this specific embodiment, a leak-proof marker pen includes a main shell, an ink cartridge 6, a pen tip, a pen nib 3, and a pen cap 10. The main shell is composed of a pen shell 1 and a pen shell 2, which are threaded together by an external thread 101 and an internal thread 201. The pen nib 3 is rotatably connected to both ends of the main shell through adjusting parts. The ink cartridge 6 is fixedly disposed inside the main shell. Ink control parts are provided on both sides of the ink cartridge 6. The ink control parts include an inner shell 5 fixed to the inside of the ink cartridge 6 and an outer shell 15 fixed to the outside of the ink cartridge 6. The inner shell 5 is provided with several flow lines. The pen tip has a sealing part 14 at one end, which passes through the perforation 601 of the outer shell 15 and the ink sac 6 and abuts against the bottom of the inner shell 5. The adjustment part includes a ring 102 fixed to the pen tip 3 and a ring 202 fixed to the main shell. The inner sides of the ring 102 are provided with sliding grooves 7, and the outer sides of the ring 202 are fixed with locking blocks 17. The locking blocks 17 are movable and locked in the corresponding sliding grooves 7. The upper and lower ends of the sliding grooves 7 are respectively provided with locking slots 701 and 702.
[0030] Through the above settings, the adjustment part and ink control part of this utility model are designed so that the pen tip can be separated from the flow port 501 of the inner shell 5 when the utility model is not in use, through the cooperation of the locking block 17 and the sliding groove 7. When in use, the pen tip contacts the flow port 501 of the inner shell 5, realizing the complete closure and stable opening of the ink channel, thereby effectively avoiding ink leakage caused by squeezing or impact when not in use.
[0031] like Figure 1 , Figure 3 and Figure 4 As shown, a first fixing ring plate 9 is provided on both sides inside the main shell, and a second fixing ring plate 16 is fixed on both sides of the ink sac 6. The first fixing ring plate 9 abuts against the corresponding second fixing ring plate 16. A third fixing ring plate 8 is fixed inside the pen tip 3. A first fixing ring plate 901 is provided on the side of the first fixing ring plate 9 corresponding to the third fixing ring plate 8, and a second fixing ring plate 801 is provided on the side of the third fixing ring plate 8 corresponding to the first fixing ring plate 9. A spring 18 is sleeved outside the ink sac 6 between the first fixing ring plate 9 and the third fixing ring plate 8. The two ends of the spring 18 are locked in the corresponding first fixing ring plate 901 and second fixing ring plate 801. The pen tip includes a fine pen tip 11 and a coarse pen tip 12. The side of the pen tip away from the sealing part 14 extends through the fixing part 13 fixed inside the pen tip 3 to the outside of the pen tip 3. A pen cap 10 is locked outside the pen tip 3. A protective block 4 is provided inside the pen cap 10. A protective groove 401 matching the corresponding pen tip is provided inside the protective block 4. The pen tip is locked in the corresponding protective groove 401.
[0032] Through the above settings, the fixing ring plate 9 and fixing ring plate 16 of this utility model can fix the ink sac 6 and limit the axial movement of the ink sac 6; the spring 18 of this utility model can provide a certain elastic restoring force, and together with the locking block 17 and the sliding groove 7, it can ensure that the pen tip 3 can be reset when the state of use changes to the state of non-use; the fine pen tip 11 and the coarse pen tip 12 of this utility model can meet the writing needs of thick and thin lines, and the user can use one of the pen tips as needed without changing the pen, which improves the practicality; the protective block 4 and the protective groove 401 of this utility model can effectively protect the pen tip and prevent the pen tip from being deformed or damaged due to collision or friction when storing it, which can effectively extend the service life of this utility model.
[0033] Working principle: When not in use, this utility model is in a state of... Figure 1 In this state, the locking block 17 is locked in the slot 701, the pen tip is separated from the inner shell 5, and the sealing part 14 is locked inside the inner shell 5, abutting against the flow port 501 of the inner shell 5. At this time, the ink channel is not open, realizing the physical isolation of the ink channel and effectively solving the problem of ink leakage. When this utility model is needed, select the pen tip of the desired thickness according to the requirements, remove the pen cap 10, fix the main shell, rotate the pen tip 3 to make the locking block 17 disengage from the slot 701, and then press the pen tip 3 to move it towards the main shell until the pen tip... 3. One end of the outer shell abuts against one end of the main shell. At this time, the pen tip 3 is rotated, and the locking block 17 is fixed in the locking slot 2 702. At this time, the sealing part 14 is squeezed through the bottom of the inner shell 5, and one end of the pen core is connected to the flow port 501 of the inner shell 5. At this time, the ink channel will be opened, and the ink inside the ink sac 6 can flow to the pen tip through the flow port 501. The pen tip can absorb the ink, thereby realizing writing. The locking is achieved by the locking block 17, the locking slot 1 701 and the locking slot 2 702, which can effectively prevent ink leakage when the pen tip is hit or squeezed by the outside.
[0034] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. A leak-proof marker pen, comprising a main casing, an ink cartridge (6), a pen tip, a pen nib (3), and a pen cap (10), characterized in that, The main shell is composed of pen shell one (1) and pen shell two (2) connected by an external thread (101) and an internal thread (201). Pen tips (3) are rotatably connected to both ends of the main shell via adjustment parts. An ink sac (6) is fixed inside the main shell. Ink control parts are provided on both sides of the ink sac (6). The ink control parts include an inner shell (5) fixed to the inside of the ink sac (6) and an outer shell (15) fixed to the outside of the ink sac (6). The inner shell (5) has several flow ports (501). A sealing part (14) is provided at one end of the pen tip. The sealing part (14) passes through the perforation (601) of the outer shell (15) and the ink sac (6) in sequence and abuts against the bottom of the inner shell (5). The adjustment part includes a ring sleeve one (102) fixed to the pen tip (3) and a ring sleeve two (202) fixed to the main shell. The inner sides of the ring sleeve one (102) are provided with sliding grooves (7), and the outer sides of the ring sleeve two (202) are fixed with locking blocks (17). The locking blocks (17) are locked in the corresponding sliding grooves (7) and can move. The upper and lower ends of the sliding grooves (7) are respectively connected by a locking groove one (701) and a locking groove two (702).
2. The leak-proof marker pen according to claim 1, characterized in that, The main shell has a fixing ring plate 1 (9) on both sides, and the ink sac (6) has a fixing ring plate 2 (16) fixed on both sides, with the fixing ring plate 1 (9) abutting against the corresponding fixing ring plate 2 (16).
3. A leak-proof marker pen according to claim 2, characterized in that, Each pen tip (3) is fixedly provided with a fixing ring plate three (8). The fixing ring plate one (9) is provided with a spring groove one (901) on one side corresponding to the fixing ring plate three (8). The fixing ring plate three (8) is provided with a spring groove two (801) on one side corresponding to the fixing ring plate one (9). A spring (18) is sleeved on the outside of the ink sac (6) between the fixing ring plate one (9) and the fixing ring plate three (8). The two ends of the spring (18) are locked in the corresponding spring groove one (901) and spring groove two (801).
4. A leak-proof marker pen according to claim 1, characterized in that, The pen tip includes a fine tip (11) and a coarse tip (12), and the side of the pen tip away from the sealing part (14) extends through the fixing part (13) fixed inside the pen head (3) to the outside of the pen head (3).
5. A leak-proof marker pen according to claim 4, characterized in that, The pen tip (3) is fitted with a pen cap (10), and a protective block (4) is provided inside the pen cap (10). The protective block (4) is provided with a protective groove (401) that matches the corresponding pen tip, and the pen tip is fitted into the corresponding protective groove (401).