Direct liquid type fountain pen structure suitable for wide-viscosity and large-particle ink
By designing a straight liquid water pen structure, the automatic protection of the pen tip is achieved by using components such as slide chutes, limit rings and return springs, which solves the problems of existing water pens being easily damaged to viscosity and the pen tip, and improves the fluency of ink and the convenience of use.
Patent Information
- Application Number
- CN202422363156.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-27
AI Technical Summary
Existing water pens have limited adaptability to inks of different viscosity, which are prone to clogging and the pen tips are prone to staining the sleeves or damage, especially when used and stored.
A straight liquid water pen structure is designed, including pen holder, pen tip, pen tip, protective plate and counterweight ring. Automatic protection of pen tip is achieved through sliding grooves, limit rings, return springs and switch components. Combined with multi-stage ultra-long widen air return grooves and full-stage large gaps, it adapts to the smoothness of wide viscosity and large particle ink.
It effectively reduces the probability of the sleeves being stained and the pen tip being damaged, improves writing fluency and convenience, and is suitable for a wide range of viscosity and large-grain inks.
Smart Images
Figure CN223131684U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gel pens, in particular to a direct liquid gel pen structure applicable to inks with a wide range of viscosities and large particles. Background Art
[0002] In today's society, writing tools play a crucial role in people's study, work and life. As a common writing tool, gel pens are widely used in various fields.
[0003] At present, there are some technical problems with the existing gel pens on the market. On the one hand, their adaptability to inks with different viscosities is limited. When encountering thicker inks, the writing smoothness may be affected; for inks containing large particles, it is even easier to clog the pen tip. On the other hand, there are significant drawbacks when the existing gel pen tips are not in use temporarily or placed horizontally. If the sleeve accidentally touches the pen tip at this time, it is very easy to be soiled by the ink, causing inconvenience to the user. Moreover, if the gel pen accidentally drops, the probability of the pen tip being damaged is relatively high, which not only affects the service life of the gel pen, but also may lead to a decline in writing quality and even make it impossible to continue using.
[0004] In view of this, a direct liquid gel pen structure applicable to inks with a wide range of viscosities and large particles, and at the same time can effectively solve the problems of the pen tip being easily soiled on the sleeve and being easily damaged, is particularly necessary. Content of the Utility Model
[0005] To solve the above technical problems, the utility model provides a direct liquid gel pen structure applicable to inks with a wide range of viscosities and large particles, and which also reduces the risk of the sleeve being soiled and being easily damaged.
[0006] A direct liquid fountain pen structure suitable for a wide range of viscosities and large particle inks of the present utility model includes a pen barrel. One end of the pen barrel is hermetically provided with a tail plug, and the other end of the pen barrel is hermetically provided with a nib holder. An annular groove is provided on the outer side of the installation part of the nib holder on the pen barrel. A nib is provided at one end of the nib holder away from the pen barrel. A pen cap is clamped on one side of the pen barrel where the nib is located. Four groups of sliding grooves are evenly provided on the circumferential side wall of the nib holder. A sliding outlet is provided on one side of each group of sliding grooves close to the nib. A protective plate is slidably provided in each group of sliding grooves. A limiting ring is fixedly sleeved at one end of the nib holder. The four groups of protective plates are limited in the four groups of sliding grooves by the limiting ring. A synchronous ring is fixedly sleeved on the side of the four groups of protective plates away from the limiting ring. A return spring is provided between the limiting ring and the synchronous ring. The four groups of protective plates are all inside the return spring. A weight ring is provided in the annular groove. The weight ring is slidably sleeved with the nib holder. A rotating shaft is provided at one end of each of the four groups of sliding grooves close to the pen barrel. Auxiliary grooves are provided on the outer side walls of the four groups of protective plates. Four groups of mounting brackets are evenly provided on the inner side wall of the limiting ring. An auxiliary shaft is rotatably provided on each group of mounting brackets. The four groups of mounting brackets are respectively located in the four groups of auxiliary grooves. The rotating shaft and the corresponding auxiliary shaft are rotatably sleeved with an annular pull rope. The outer end of the annular pull rope is connected to the inner side wall of the weight ring, and the inner end of the other end of the annular pull rope is connected to the corresponding protective plate. A switch assembly is provided on the side wall of the pen barrel close to the nib. The switch assembly limits the weight ring in the annular groove.
[0007] Preferably, a positioning groove parallel to the sliding groove is provided on the side wall of the nib holder. A positioning block is slidably provided in the positioning groove. The positioning block is installed on the inner side wall of the weight ring.
[0008] Preferably, the switch assembly is provided with a pressing rod. A pressing groove is provided on the side wall of the pen barrel. A through hole is provided on the side of the pressing groove close to the nib and communicates with the annular groove. A clamping groove is provided at the corresponding part of the weight ring and the through hole. A clamping block is provided on the inner side wall of one end of the pressing rod. The clamping block passes through the through hole and is clamped with the clamping groove. A slope inclined outward is provided on the side wall of the clamping block close to the clamping groove. The pressing rod is located in the pressing groove and a fixed shaft is rotatably provided in the middle of it. The fixed shaft is installed in the pressing groove. One part of the pressing rod away from the nib extends out of the outside of the pressing groove, and a pushing assembly is provided between the part of the pressing rod away from the nib and the pressing groove.
[0009] Preferably, a water storage device is provided on the side of the pen barrel close to the nib. An inner hole is provided inside the water storage device. A water guiding core is provided in the inner hole. One end of the water guiding core is closely attached to the inside of the nib. Multiple-segment ultra-long and widened air return grooves are provided through the side wall of the inner hole.
[0010] Preferably, a whole-section large-gap fit is provided between the inner hole of the water storage device and the water guiding core.
[0011] Preferably, a positioning support ring is provided at one end of the water storage device. The positioning support ring positions and supports the water guiding core, and the head of the water guiding core is completely inserted into the nib.
[0012] Preferably, the pushing component is set as a pushing spring. One end of the pushing spring is connected to the pressing groove, and a pushing groove is arranged at the position of the pressing rod corresponding to the pushing spring. The other end of the pushing spring is connected to the pressing rod and is located in the pushing groove.
[0013] Preferably, a plurality of groups of universal balls are evenly and rotatably arranged on the inner side wall of the counterweight ring, and the plurality of groups of universal balls are rotatably in close contact with the outer side wall of the pen tip seat.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. Good protection
[0016] When using this gel pen, pick up the pen and then unlock the limit of the switch component on the counterweight ring. At this time, under the action of gravity, the counterweight block slides down along the pen tip seat. At this time, the counterweight block will pull up the four groups of protective plates and the synchronous ring under the cooperation of the pulling rope and the rotating shaft, so that the pen tip is exposed, and at this time, the gel pen can be used for writing;
[0017] When the gel pen is temporarily placed on the table or when the pen rod forms a small angle with the horizontal plane when not using the gel pen, at this time, the component force of the gravity of the counterweight ring in the direction of the pen tip seat is small, and then the return spring will push the synchronous ring to move back to its original position. At this time, the four groups of protective plates will return to surround the pen tip again. At the same time, after the counterweight block is completely reset on the pen tip seat, the switch component will lock it again, thus completing the process of surrounding and protecting the pen tip, reducing the probability of soiling the sleeves when the gel pen is placed on the table without use and the pen tip being damaged due to dropping. The weight of the counterweight ring and the elastic force of the return spring are matched according to actual use;
[0018] 2. Applicable to inks with a wide range of viscosities and large particles
[0019] An ultra-long and widened air return groove shape with multiple sections in the cavity is arranged in the middle of the inner hole of the water storage device. Different from the general air return groove width of 0.1MM or less, the width of the air return groove of this new type can reach more than 0.15MM, which is more conducive to the exhaust of inks with a wide range of viscosities and large particles such as acrylic pens and diffuser pens;
[0020] The inner hole of the water storage device and the water guiding core are in a completely open structure fit. The inner hole of the water storage device and the water guiding core are in a large-gap fit for the whole section, and the water guiding core is more convenient to assemble and is not easy to deform, which is beneficial to the smoothness of inks with a wide range of viscosities and large particles. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural diagram of the present utility model;
[0022] Figure 2 is an overall cross-sectional view of the present utility model;
[0023] Figure 3 is a partial enlarged structural schematic diagram of A in Figure 2 the present utility model;
[0024] Figure 4 is a partial enlarged structural schematic diagram of B in Figure 2 the present utility model;
[0025] Figure 5 is a partial enlarged structural schematic diagram of C in Figure 2 the present utility model;
[0026] Figure 6 is a connection structural schematic diagram of the counterweight ring and the pen tip holder of the present utility model;
[0027] Figure 7 is a connection structural schematic diagram of the synchronous ring and the protection plate of the present utility model;
[0028] Figure 8 is a connection structural schematic diagram of the limit ring and the pen tip holder of the present utility model;
[0029] Figure 9 is a partial enlarged structural schematic diagram of D in Figure 8 the present utility model;
[0030] Figure 10 is a connection structural schematic diagram of the air return groove and the water storage device of the present utility model;
[0031] Reference numerals in the drawings: 1. pen barrel; 2. tail plug; 3. pen tip holder; 4. pen tip; 5. pen cap; 6. sliding groove; 7. protection plate; 8. limit ring; 9. synchronous ring; 10. return spring; 11. counterweight ring; 12. rotating shaft; 13. pulling rope; 14. positioning groove; 15. positioning block; 16. pressing rod; 17. clamping block; 18. water storage device; 19. water guiding core; 20. multi-segment ultra-long and widened air return groove; 21. positioning support ring; 22. pushing spring; 23. universal ball; 24. auxiliary groove; 25. mounting bracket; 26. auxiliary shaft. Detailed implementation manners
[0032] The following further describes in detail the specific implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0033] As shown in Figures 1 to 10As shown in the figure, a structure of a direct liquid fountain pen applicable to inks with a wide range of viscosities and large particles of the present utility model includes a pen barrel 1. One end of the pen barrel 1 is hermetically provided with a tail plug 2, and the other end of the pen barrel 1 is hermetically provided with a pen tip seat 3. An annular groove is provided on the outer side of the installation part of the pen tip seat 3 on the pen barrel 1. A pen tip 4 is provided at one end of the pen tip seat 3 away from the pen barrel 1. A pen cap 5 is clamped on one side of the pen barrel 1 where the pen tip 4 is located. Four groups of sliding grooves 6 are evenly provided on the circumferential side wall of the pen tip seat 3. A sliding outlet is provided on one side of each group of sliding grooves 6 close to the pen tip. A protection plate 7 is slidably arranged in each group of sliding grooves 6. A limiting ring 8 is fixedly sleeved at one end of the pen tip seat 3. The four protection plates 7 are limited in the four groups of sliding grooves 6 by the limiting ring 8. A synchronous ring 9 is fixedly sleeved on one side of the four protection plates 7 away from the limiting ring 8. A return spring 10 is arranged between the limiting ring 8 and the synchronous ring 9. The four protection plates 7 are all located inside the return spring 10. A weight ring 11 is arranged in the annular groove. The weight ring 11 is slidably sleeved with the pen tip seat 3. A rotating shaft 12 is provided at one end of each of the four groups of sliding grooves 6 close to the pen barrel 1. Auxiliary grooves 24 are provided on the outer side walls of the four protection plates 7. Four groups of mounting brackets 25 are evenly provided on the inner side wall of the limiting ring 8. An auxiliary shaft 26 is rotatably arranged on each group of mounting brackets 25. The four groups of mounting brackets 25 are respectively located in the four groups of auxiliary grooves 24. An annular pull rope 13 is rotatably sleeved between the rotating shaft 12 and the corresponding auxiliary shaft 26. The outer end of the annular pull rope 13 is connected to the inner side wall of the weight ring 11, and the inner end of the other end of the annular pull rope 13 is connected to the corresponding protection plate 7. A switch assembly is arranged on the side wall of the pen barrel 1 close to the pen tip 4. The switch assembly limits the weight ring 11 in the annular groove;
[0034] When using this fountain pen, pick up the pen and then unlock the limit of the weight ring 11 by the switch assembly. At this time, under the action of gravity, the weight block slides down along the pen tip seat 3. At this time, the weight block will pull up the four protection plates 7 and the synchronous ring 9 under the cooperation of the pull rope 13, the rotating shaft 12 and the auxiliary shaft 26. At this time, the pull rope 13 will rotate around the rotating shaft 12 and the auxiliary shaft 26, and the pull rope 13 is in a state of being taut but not tight, so that the pen tip 4 is exposed, and at this time, the fountain pen can be used for writing;
[0035] When the fountain pen is temporarily placed on the table or when the pen barrel 1 makes a small angle with the horizontal plane when the fountain pen is not in use, at this time, the component of the gravity of the weight ring 11 in the direction of the pen tip seat 3 is small. Then the return spring 10 will push the synchronous ring 9 to move back to its original position. At this time, the four protection plates 7 will reset to surround the pen tip 4 again. At the same time, after the weight block is completely reset on the pen tip seat 3, the switch assembly locks it again, thus completing the process of surrounding and protecting the pen tip 4, reducing the probability of soiling the sleeves and damaging the pen tip 4 when the fountain pen is placed on the table and not in use. The weight of the weight ring 11 and the elastic force of the return spring 10 are selected according to the actual use in this process.
[0036] As a preferred embodiment of the above embodiment, the side wall of the pen holder 3 is provided with a positioning groove 14 parallel to the slide groove 6, and a positioning block 15 is slidably provided in the positioning groove 14, and the positioning block 15 is installed on the inner side wall of the counterweight ring 11;
[0037] When the counterweight ring 11 slides on the nib holder 3, the positioning block 15 on the counterweight ring 11 slides in the positioning groove 14, which greatly reduces the probability of the counterweight ring 11 rotating while sliding on the nib holder 3 and improves the resetting accuracy of the counterweight ring 11.
[0038] As a preferred embodiment of the above, the switch assembly is provided with a pressing rod 16, a pressing groove is provided on the side wall of the pen body 1, a through hole is provided on the side of the pressing groove close to the pen tip 4 and connected to the annular groove, a card slot is provided at the position corresponding to the through hole of the counterweight ring 11, a card block 17 is provided on the inner side wall of one end of the pressing rod 16, the card block 17 passes through the through hole and is carded in the card slot, a slope inclined outward is provided on the side wall of the card block 17 close to the card slot, the pressing rod 16 is located in the pressing groove and a fixed shaft is provided in the middle thereof for rotation, the fixed shaft is installed in the pressing groove, a part of the side of the pressing rod 16 away from the pen tip 4 extends to the outside of the pressing groove, and a pushing assembly is provided between the position of the pressing rod 16 away from the pen tip 4 and the pressing groove;
[0039] When the user uses the fountain pen, he picks up the fountain pen vertically and only needs to press the part of the pressing rod 16 exposed on the outside of the pen barrel 1. The pressing rod 16 will rotate around the fixed axis, and then the block 17 will disengage from the slot. At this time, the block 17 releases the limit on the counterweight ring 11. Then, when the pen barrel 1 is used vertically, the counterweight ring 11 will move downward under the action of gravity, and the four groups of protective plates 7 will be pulled up through the cooperation of the rotating shaft 12, the auxiliary shaft 26 and the pull rope 13. When the fountain pen is not used and the fountain pen is placed on the desktop, the reset spring 10 will push the four groups of protective plates 7 to reset, and the counterweight ring 11 will reset at the same time. Since one end of the block 17 is set as a slope, the block 17 will be automatically squeezed and lifted, and then it will be clamped into the slot of the counterweight ring 11 again under the action of the pushing component. At this time, whether the fountain pen falls or is touched, the four groups of protective plates 7 will not be separated from the protective state of the pen tip 4. At the same time, the pressing part of the pressing rod 16 is located at the hand-held part of the fountain pen, which greatly improves the convenience of use.
[0040] As a preferred embodiment of the above, a water reservoir 18 is provided on one side of the pen holder 1 near the pen tip 4, an inner hole is provided inside the water reservoir 18, a water guide core 19 is provided inside the inner hole, one end of the water guide core 19 is in close contact with the inside of the pen tip 4, and a multi-stage extra-long and widened air return groove 20 is provided through the side wall of the inner hole;
[0041] The inner hole of the water storage device 18 is provided with a multi-segment ultra-long and widened air return groove 20 in the cavity. Different from the general air return groove width of 0.1MM and below, the width of this new air return groove can reach more than 0.15MM, which is more conducive to the exhaust of inks with a wide range of viscosities and large particles such as propylene pens and diffuser pens.
[0042] As a preference of the above embodiment, a whole-section large-gap fit is provided between the inner hole of the water storage device 18 and the water guiding core 19;
[0043] The structure between the inner hole of the water storage device 18 and the water guiding core 19 is a completely open structure fit. A whole-section large-gap fit is provided between the inner hole of the water storage device 18 and the water guiding core 19. The assembly of the water guiding core 19 is more convenient and not prone to deformation, which is beneficial to the fluidity of inks with a wide range of viscosities and large particles.
[0044] As a preference of the above embodiment, a positioning support ring 21 is provided at one end of the water storage device 18. The positioning support ring 21 positions and supports the water guiding core 19, and the head of the water guiding core 19 is completely inserted into the pen tip 4;
[0045] A support ring for the water guiding core 19 is provided at the bottom, which can effectively prevent the structure of positioning and supporting the water guiding core 19 at the bottom position of the water storage device 18. And the head of the water guiding core 19 is completely inserted into the pen tip 4, effectively preventing the up and down movement of the water guiding core 19. And the bottom end of the water guiding core 19 is below the inner hole of the water storage device 18. When in use, the inks with a wide range of viscosities and large particles in the liquid storage chamber are completely drained to the pen tip 4 through the water guiding core 19, improving the fluidity and continuity of the ink.
[0046] As a preference of the above embodiment, the pushing assembly is provided as a pushing spring 22. One end of the pushing spring 22 is connected to the pressing groove, and a pushing groove is provided at the corresponding part of the pressing rod 16 and the pushing spring 22. The other end of the pushing spring 22 is connected to the pressing rod 16 and is located in the pushing groove;
[0047] The pushing spring 22 can make the reset of the pressing rod 16 smoother. Moreover, the initial elastic force of the pushing spring 22 can be selected to be very small, greatly reducing the influence of the pushing spring 22 on the reset process of the counterweight ring 11. At the same time, one end of the pushing spring 22 is located in the pushing groove, greatly reducing the probability of the pushing spring 22 slipping off the pressing rod 16 and greatly improving the practicability.
[0048] As a preference of the above embodiment, a plurality of groups of universal balls 23 are evenly and rotatably arranged on the inner side wall of the counterweight ring 11, and the plurality of groups of universal balls 23 are rotatably and closely attached to the outer side wall of the pen head seat 3;
[0049] The addition of the plurality of groups of universal balls 23 changes the sliding friction between the counterweight ring 11 and the pen head seat 3 into rolling friction, greatly reducing the frictional force and making the working process of the counterweight ring 11 smoother.
[0050] A direct liquid fountain pen structure applicable to inks with a wide range of viscosities and large particles according to the present utility model, and a more specific implementation manner thereof is as follows:
[0051] I. Preparation work
[0052] First of all, the direct liquid fountain pen structure mainly consists of a pen barrel 1, a tail plug 2, a pen tip seat 3, a pen tip 4, a pen cap 5, a protection plate 7, a limit ring 8, a synchronous ring 9, a return spring 10, a counterweight ring 11, a rotating shaft 12, a pull rope 13, a positioning groove 14, a positioning block 15, a pressing rod 16, a clamping block 17, a water storage device 18, a water guiding core 19, a multi-section ultra-long and widened air return groove 20, a positioning support ring 21, a pushing spring 22, a universal ball 23 and other components. During the production and assembly process, one end of the pen barrel 1 is hermetically installed with the tail plug 2, and the other end is hermetically installed with the pen tip seat 3. An annular groove is arranged on the outer side of the pen tip seat 3. A limit ring 8 is installed at one end of the pen tip seat 3. A component with a synchronous ring 9, a return spring 10 and a protection plate 7 is installed on the pen tip seat 3. The counterweight ring 11 is installed in the annular groove. The protection plate 7 is connected to the counterweight ring 11 through the rotating shaft 12, an auxiliary shaft 26 and a pull rope 13. A switch component is installed on the side wall of the pen barrel 1. A water storage device 18 is installed on the inner side of the pen barrel 1 close to the pen tip 4. A water guiding core 19 is arranged in the water storage device 18, and components such as a positioning support ring 21 are installed.
[0053] II. Usage process
[0054] Opening the protection plate 7
[0055] When the user needs to use the fountain pen, pick up the fountain pen vertically.
[0056] Press the part of the pressing rod 16 exposed outside the pen barrel 1 on the side wall of the pen barrel 1. The pressing rod 16 rotates around the fixed shaft, and the clamping block 17 disengages from the clamping groove of the counterweight ring 11, releasing the limit on the counterweight ring 11.
[0057] Under the action of gravity, the counterweight ring 11 slides down along the pen tip seat 3. At this time, the counterweight ring 11 pulls up the four groups of protection plates 7 and synchronous rings 9 through the cooperation of the pull rope 13, the rotating shaft 12 and the auxiliary shaft 26. The pull rope 13 rotates around the rotating shaft 12 and the auxiliary shaft 26 and is in a tightened but not taut state, and the pen tip 4 is exposed. At this time, the fountain pen can be used for writing.
[0058] Protecting the pen tip 4
[0059] When the fountain pen is temporarily placed on the table or the pen barrel 1 forms a small angle with the horizontal plane when the fountain pen is not in use, the component force of the gravity of the counterweight ring 11 in the direction of the pen tip seat 3 is small.
[0060] The return spring 10 pushes the synchronous ring 9 to move back to its original position, and the four groups of protection plates 7 follow to return to their original positions and surround the pen tip 4 again.
[0061] After the counterweight is fully reset on the pen tip base 3, since one end of the latch 17 is set as a slope surface, the latch 17 will be automatically squeezed and lifted, and under the action of the pushing component, it will be clamped into the slot of the counterweight ring 11 again to lock the counterweight ring 11 and complete the process of surrounding and protecting the pen tip 4.
[0062] Adapt to a wide range of viscosities and large particle inks
[0063] There is a multi-segment ultra-long widened air return groove 20 in the middle of the inner hole of the water storage 18, and the width can reach more than 0.15 MM, which is more conducive to the exhaust of inks with a wide range of viscosities and large particles, such as acrylic pens and diffuser pens.
[0064] The inner hole of the water storage 18 and the water guiding core 19 are in a whole-section large-gap fit, and the water guiding core 19 is more convenient to assemble and not easy to deform, which is beneficial to the fluidity of inks with a wide range of viscosities and large particles.
[0065] The positioning support ring 21 at one end of the water storage 18 positions and supports the water guiding core 19, and the head of the water guiding core 19 is completely inserted into the pen tip 4, effectively preventing the water guiding core 19 from moving up and down and improving the fluidity and continuity of the ink.
[0066] Each component works together
[0067] When the counterweight ring 11 slides on the pen tip base 3, it slides through the positioning block 15 on the counterweight ring 11 in the positioning groove 14, reducing the probability of the counterweight ring 11 rotating while sliding on the pen tip base 3 and improving the reset accuracy of the counterweight ring 11.
[0068] The pushing spring 22 makes the reset of the pressing rod 16 smoother, and the initial elastic force is very small, reducing the influence on the reset process of the counterweight ring 11. At the same time, one end of the pushing spring 22 is located in the pushing groove, reducing the probability of slipping off.
[0069] The multiple groups of universal balls 23 on the inner side wall of the counterweight ring 11 change the sliding friction between the counterweight ring 11 and the pen tip base 3 into rolling friction, reducing the friction force and making the working process of the counterweight ring 11 smoother.
[0070] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A direct liquid fountain pen structure applicable to inks with a wide range of viscosities and large particles, comprising a pen barrel (1), one end of the pen barrel (1) is hermetically provided with a tail plug (2), the other end of the pen barrel (1) is hermetically provided with a nib holder (3), the nib holder (3) is provided with an annular groove on the outer side of the installation part of the pen barrel (1), one end of the nib holder (3) away from the pen barrel (1) is provided with a nib (4), a pen cap (5) is clamped on one side of the pen barrel (1) where the nib (4) is located, and the characteristics are that, Four groups of sliding grooves (6) are evenly arranged on the circumferential side wall of the pen tip seat (3). A sliding outlet is arranged on one side of each group of sliding grooves (6) close to the pen tip. A protective plate (7) is slidably arranged in each group of sliding grooves (6). A limiting ring (8) is fixedly sleeved at one end of the pen tip seat (3). The limiting ring (8) limits the four protective plates (7) in the four groups of sliding grooves (6). A synchronous ring (9) is fixedly sleeved on the side of the four protective plates (7) away from the limiting ring (8). A return spring (10) is arranged between the limiting ring (8) and the synchronous ring (9). The four protective plates (7) are all located inside the return spring (10). A weight ring (11) is arranged in the annular groove. The weight ring (11) is slidably sleeved with the pen tip seat (3). A rotating shaft (12) is arranged at one end of each of the four groups of sliding grooves (6) close to the pen barrel (1). Auxiliary grooves (24) are arranged on the outer side walls of the four protective plates (7). Four groups of mounting brackets (25) are evenly arranged on the inner side wall of the limiting ring (8). An auxiliary shaft (26) is rotatably arranged on each group of mounting brackets (25). The four groups of mounting brackets (25) are respectively located in the four groups of auxiliary grooves (24). The rotating shaft (12) and the corresponding auxiliary shaft (26) are rotatably sleeved with an annular pull rope (13). The outer end of the annular pull rope (13) is connected to the inner side wall of the weight ring (11). The other inner end of the annular pull rope (13) is connected to the corresponding protective plate (7). A switch assembly is arranged on the side wall of the pen barrel (1) close to the pen tip (4). The switch assembly limits the weight ring (11) in the annular groove.
2. The structure of a direct liquid fountain pen applicable to inks with a wide range of viscosities and large particles as described in claim 1, wherein A positioning groove (14) parallel to the sliding groove (6) is arranged on the side wall of the pen tip seat (3). A positioning block (15) is slidably arranged in the positioning groove (14). The positioning block (15) is installed on the inner side wall of the weight ring (11).
3. The direct liquid fountain pen structure applicable to inks with a wide range of viscosities and large particles as described in claim 2, wherein The switch assembly is provided with a pressing rod (16). A pressing groove is arranged on the side wall of the pen barrel (1). A through hole is arranged on one side of the pressing groove close to the pen tip (4) and communicated with the annular groove. A clamping groove is arranged at the corresponding position of the weight ring (11) and the through hole. A clamping block (17) is arranged on the inner side wall of one end of the pressing rod (16). The clamping block (17) passes through the through hole and is clamped with the clamping groove. A slope inclined outward is arranged on the side wall of the clamping block (17) close to the clamping groove. The pressing rod (16) is located in the pressing groove and a fixed shaft is rotatably arranged in the middle of it. The fixed shaft is installed in the pressing groove. A part of the pressing rod (16) away from the pen tip (4) extends out of the outside of the pressing groove. And a pushing assembly is arranged between the part of the pressing rod (16) away from the pen tip (4) and the pressing groove.
4. The structure of a direct liquid fountain pen applicable to inks with a wide range of viscosities and large particles as described in claim 3, characterized in that, A water storage device (18) is arranged on one side of the inner part of the pen barrel (1) close to the pen tip (4). An inner hole is arranged inside the water storage device (18). A water guiding core (19) is arranged in the inner hole. One end of the water guiding core (19) is closely attached to the inside of the pen tip (4). Multiple-section ultra-long and widened air return grooves (20) are arranged through the side wall of the inner hole.
5. The structure of a direct liquid fountain pen applicable to inks with a wide range of viscosities and large particles as described in claim 4, characterized in that, A whole-section large-gap fit is arranged between the inner hole of the water storage device (18) and the water guiding core (19).
6. The structure of a direct liquid fountain pen applicable to inks with a wide range of viscosities and large particles as described in claim 5, wherein, One end of the water storage device (18) is provided with a positioning support ring (21), which positions and supports the water guiding core (19), and the head of the water guiding core (19) is completely inserted into the pen tip (4).
7. The structure of a direct liquid fountain pen applicable to inks with a wide range of viscosities and large particles as described in claim 6, wherein The pushing component is set as a pushing spring (22). One end of the pushing spring (22) is connected to the pressing groove. A pushing groove is provided at the position of the pressing rod (16) corresponding to the pushing spring (22). The other end of the pushing spring (22) is connected to the pressing rod (16) and is located in the pushing groove.
8. The structure of a direct liquid fountain pen applicable to inks with a wide range of viscosities and large particles as described in claim 7, characterized in that, A plurality of groups of universal balls (23) are evenly and rotatably arranged on the inner side wall of the weight ring (11), and the plurality of groups of universal balls (23) are rotatably in close contact with the outer side wall of the pen head seat (3).