A marker pen capable of self-adapting ink output based on writing pressure

Abstract

This invention relates to the field of stationery manufacturing and fluid ink dispensing control technology, and discloses a marker pen that adaptively adjusts ink dispensing based on writing pressure. The pen includes a pen body and a connecting sleeve installed on one side of the pen body. Through the connecting sleeve installed on the pen body, and the adjustment component inside the connecting sleeve, the invention achieves adaptive matching between writing pressure and ink dispensing. Through the linkage structure of the tapered ink guide tip, tapered plate, and through-slot installed inside the connecting sleeve, the writing pressure is converted into a linear change in the opening of the through-slot. Light strokes result in a small opening and less ink dispensing, while heavy strokes result in a large opening and more ink dispensing, achieving the effect of continuous ink flow with light strokes and no ink overflow with heavy strokes, solving the problem of uneven ink dispensing in traditional marker pens. Simultaneously, through the cooperation of a spring, a tension spring, and a sealing plate, the ink channel is quickly reset and blocked after the pen is stopped, achieving the functions of preventing ink leakage and seepage, avoiding ink waste and contamination, and improving the reliability and lifespan of the marker pen.

Description

Technical Field

[0001] This invention relates to the field of stationery manufacturing and fluid ink dispensing control, specifically to a marker pen that adaptively adjusts the ink dispensing volume based on writing pressure. Background Technology

[0002] Marker pens, as a common stationery item that combines writing and drawing functions, are widely used in various fields such as industrial design, architectural drawing, office marking, and student drawing due to their advantages such as fast drying speed, high color saturation, and ease of use. Currently, the core ink supply method of marker pens on the market is mainly capillary action ink supply. They usually have a fixed fiber ink reservoir or hollow ink tube inside, and the ink is continuously delivered to the pen tip by capillary adsorption. However, this traditional ink supply structure has an inherent flaw: the ink output is a fixed value and cannot adaptively adjust according to changes in the user's writing pressure. In actual use, when the user lightly presses the pen tip to draw fine lines or write precisely, insufficient ink supply can easily lead to ink breaks and discontinuous lines. When the user presses the pen tip heavily to draw thick lines or emphasize marks, excessive ink supply can lead to ink overflow and smudging on the paper, seriously affecting the smoothness of writing and the neatness of the work, and failing to meet the diverse creative needs of users for different line thicknesses and different stroke pressures.

[0003] At the same time, the existing sealing and protective structure design of marker pens also has obvious shortcomings. Most products rely on a simple connection between the pen cap and the nib sleeve to achieve a seal, which has poor sealing performance. When the pen is not used for a long time, the ink at the nib is prone to evaporation, causing the nib to dry out and unable to flow ink normally, resulting in ink waste. In addition, the fit between the pen cap and the pen body is limited. If the pen is bumped or squeezed during transportation or carrying, the pen cap is easy to fall off, further increasing the risk of ink evaporation and leakage. Although some improved marker pens have added sealing components, most of them are manually controlled structures, which are cumbersome to operate. Moreover, the fit between the sealing component and the nib is not precise enough, which can easily lead to problems such as poor sealing or affecting the smoothness of ink flow after unlocking. Summary of the Invention

[0004] The purpose of this invention is to provide a marker pen that adaptively adjusts ink output based on writing pressure, in order to solve the problems mentioned in the background art, such as the inability of marker pen ink output to adaptively adjust with writing pressure, poor sealing and protection performance, and cumbersome operation.

[0005] To achieve the above objectives, the present invention provides a marker pen that adaptively adjusts the ink output based on writing pressure, comprising a pen body and a connecting sleeve installed on one side of the pen body, a pen tip sleeve installed on the side of the connecting sleeve away from the pen body, a tapered ink-guiding pen tip installed in the inner cavity of the pen tip sleeve, and one side of the tapered ink-guiding pen tip passing through the pen tip sleeve and installed in the connecting sleeve, and an adjustment component installed in the inner cavity of the connecting sleeve. The adjustment assembly includes a circular mounting plate and a through groove. The circular mounting plate is fixedly connected to one side of the inner wall of the connecting sleeve. The through groove passes through and is located in the middle of the circular mounting plate. Two springs are installed through the circular mounting plate on both sides near the pen body. A sliding rod is fixedly connected to the side of each spring away from the circular mounting plate. The end of the sliding rod away from the spring passes through the circular mounting plate. A sealing plate is fixedly connected to the side of the two sliding rods that passes through the circular mounting plate. A conical plate is fixedly connected to the middle of the side of the sealing plate near the sliding rod, and the conical plate is located in the inner cavity of the through groove. One side of the tapered ink-guiding pen tip abuts against the tapered plate.

[0006] As a preferred embodiment of the present invention, a movable ring is provided in the middle of the inner cavity of the connecting sleeve. The middle of the movable ring is through and has a conical groove, which cooperates with the conical ink guide tip. The four sides of the outer wall of the movable ring are provided with mounting grooves. The inner cavities of the four mounting grooves are rotatably connected to swing rods. The side of the four swing rods away from the movable ring is provided with a hinge seat, and the side of the hinge seat away from the swing rod is fixedly connected to the inner wall of the connecting sleeve. A tension spring is fixedly connected to one side of the four swing rods.

[0007] As a preferred embodiment of the present invention, a second circular mounting plate is fixedly connected to the inner wall of the connecting sleeve on the side away from the first circular mounting plate, and one side of the second circular mounting plate is fixedly connected to four tension springs respectively.

[0008] As a preferred embodiment of the present invention, a circular groove is provided on the side of the circular mounting plate away from the pen body.

[0009] As a preferred embodiment of the present invention, the circular mounting plate II has a circular groove II on the side away from the pen tip sheath.

[0010] As a preferred embodiment of the present invention, a circular sealing plate is fixedly connected to one side of the movable ring, and the circular sealing plate slides in a circular groove. A circular sealing plate is fixedly connected to the side of the movable ring away from the circular sealing plate, and the circular sealing plate slides in a circular groove.

[0011] As a preferred embodiment of the present invention, the inner cavity of the pen tip sleeve is equipped with a sealing component, the sealing component including a placement groove and a circular sealing sleeve, the placement groove passing through and being opened in the middle of the pen tip sleeve, and the circular sealing sleeve passing through and being installed in the middle of the inner cavity of the placement groove.

[0012] As a preferred embodiment of the present invention, the outer wall of the pen tip sheath is provided with a uniformly distributed swing groove 1, and a swing groove 2 is provided on one side of the inner cavity of the swing groove 1. Limiting grooves are provided on both sides of the swing groove 2. A swing plate is rotatably connected to one side of the inner cavity of the swing groove 1. Limiting plates are fixedly connected to both sides of the outer wall of the swing plate, and the limiting plates slide in the limiting grooves. A spring 3 is fixedly connected to one side of the bottom of the swing plate, and the side of the spring 3 away from the swing plate is fixedly connected to one side of the inner wall of the swing groove 2. A pressing plate is fixedly connected to one side of the bottom of the swing plate, and the pressing plate cooperates with the circular sealing sleeve.

[0013] As a preferred embodiment of the present invention, a pen cap is fitted on the outer wall of the pen body near the connecting sleeve and the pen tip sleeve, and an angled abutment block is fixedly connected to the inner cavity of the pen cap, and the angled abutment block abuts against the swing plate.

[0014] As a preferred embodiment of the present invention, a tail plug is installed on the side of the pen body away from the connecting sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, through a connecting sleeve installed on the pen body and an adjustment component within the connecting sleeve's inner cavity, achieves adaptive matching between writing pressure and ink output. The interconnected structure of the tapered ink-guiding tip, tapered plate, and through-slot installed within the connecting sleeve converts writing pressure into a linear change in the through-slot opening. Light strokes result in a smaller opening and less ink output, while heavy strokes result in a larger opening and more ink output, achieving the effect of continuous ink flow with light strokes and no ink overflow with heavy strokes, thus solving the problem of uneven ink output in traditional markers. Simultaneously, through the cooperation of spring 1, tension spring, and sealing plate, the ink channel is quickly restored and blocked after the pen is stopped, achieving the functions of preventing ink leakage and seepage, avoiding ink waste and contamination, and improving the reliability and lifespan of the marker.

[0016] 2. This invention utilizes circular grooves 1 and 2 respectively on circular mounting plates 1 and 2, along with circular sealing plates 1 and 2 fixedly connected to the moving ring, to achieve full-process sealing protection for the moving ring during its reciprocating motion. This design employs a sliding sealing structure, ensuring that the moving ring remains tightly fitted to the inner wall of its respective groove as the pen tip retracts or resets, effectively preventing ink from seeping through the gap between the moving ring and the front and rear mounting plates. Compared to the leakage that easily occurs in traditional marker pens due to movement gaps, the double sealing structure of this invention significantly improves the leak-proof performance of the product during writing and adjustment, while not interfering with the normal guidance and displacement of the moving ring. This achieves a balance between sealing reliability and smooth adjustment, making the marker pen more stable and durable in use, and eliminating the risk of ink leakage when idle.

[0017] 3. This invention achieves automatic sealing switching between the storage and use states of a marker pen through a sealing component installed on the pen tip sleeve and an angled contact block installed on the pen cap. Through the cooperation of the swing plate, the compression plate, and the circular sealing sleeve, the sealing sleeve is automatically compressed to wrap around the tapered ink-guiding pen tip when the pen cap is put on, forming a tight seal. Removing the pen cap relies on a spring-loaded automatic reset to unlock. This structure effectively prevents ink evaporation, drying, and leakage. Simultaneously, the limiting plate and limiting groove ensure stable movement and prevent jamming, significantly improving the lifespan and reliability of the marker pen, and solving the defects of traditional marker pens such as poor sealing, easy drying, and ink leakage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the pen body, connecting sleeve, pen tip sleeve, and tapered ink-guiding pen tip of the present invention. Figure 3 This is a sectional view of one side of the pen body and connecting sleeve of the present invention; Figure 4 This is a schematic diagram of the internal structure of the connecting sleeve of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 For the present invention Figure 4 Enlarged view at point B in the middle; Figure 7 This is a schematic diagram of the second circular sealing plate and the second circular groove of the present invention; Figure 8 This is a cross-sectional view of one side of the pen tip sheath of the present invention; Figure 9 For the present invention Figure 8 Enlarged view at point C; Figure 10 This is a schematic diagram of the pen cap of the present invention; The meanings of the labels in the diagram are as follows: 1. Pen body; 2. Connecting sleeve; 201. Circular mounting plate one; 202. Through groove; 203. Spring one; 204. Slide rod; 205. Sealing plate; 206. Conical plate; 207. Moving ring; 208. Conical groove; 209. Mounting groove; 210. Swing rod; 211. Hinge seat; 212. Tension spring; 213. Circular mounting plate two; 3. Pen tip protector; 4. Conical ink guide tip; 5. Circular groove one; 501. Circular sealing plate one; 502. Circular sealing plate two; 503. Circular groove two; 6. Placement groove; 601. Circular sealing sleeve; 602. Swing groove one; 603. Swing groove two; 604. Limiting groove; 605. Swing plate; 606. Limiting plate; 607. Spring three; 608. Extrusion plate; 7. Pen cap; 701. Angled contact block; 8. Tail plug. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Example 1 Please see Figures 1-6 In this embodiment of the invention, a marker pen with adaptive ink output adjustment based on writing pressure is provided. The invention achieves adaptive matching between writing pressure and ink output through a connecting sleeve 2 installed on the pen body 1 and an adjustment component within the connecting sleeve 2's inner cavity. Through the linkage structure of the tapered ink-guiding tip 4, the tapered plate 206, and the through-slot 202 installed within the connecting sleeve 2, the writing pressure is converted into a linear change in the opening of the through-slot 202. Light strokes result in a smaller opening and less ink output, while heavy strokes result in a larger opening and more ink output, achieving the effect of continuous ink flow with light strokes and no ink overflow with heavy strokes, thus solving the problem of uneven ink output in traditional marker pens. Simultaneously, through the cooperation of spring 203, tension spring 212, and sealing plate 205, the ink channel is quickly reset and blocked after the pen is stopped, achieving the functions of preventing ink leakage and seepage, avoiding ink waste and contamination, and improving the reliability and lifespan of the marker pen.

[0022] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0023] In this embodiment, the pen includes a pen body 1 and a connecting sleeve 2 installed on one side of the pen body 1. The pen body 1 serves as the main carrier for ink storage and gripping, housing the ink and the core ink control mechanism, providing structural support and ink storage space for the entire marker. The connecting sleeve 2 acts as an intermediate transition shell for pressure transmission and ink dispensing adjustment, enabling reliable docking between the pen body 1 and the pen tip assembly. It also provides a closed mounting cavity for the internal adjustment components. A pen tip sleeve 3 is installed on the side of the connecting sleeve 2 away from the pen body 1. The pen tip sleeve 3 protects the tapered ink-guiding pen tip 4 from deformation caused by external impacts and guides the ink evenly. The ink flows towards the writing tip, preventing ink from accumulating at the base of the tip. The inner cavity of the tip sleeve 3 is equipped with a tapered ink guide tip 4, and one side of the tapered ink guide tip 4 passes through the tip sleeve 3 and is installed in the connecting sleeve 2. The tapered ink guide tip 4 relies on capillary action to absorb and transfer ink. At the same time, it serves as a pressure sensing end, transmitting writing pressure to the internal adjustment component. The inner cavity of the connecting sleeve 2 is equipped with an adjustment component, which is the core of achieving pressure-adaptive ink control. Through mechanical linkage, the writing pressure is converted into changes in the opening of the ink channel, solving the problem of uneven ink output in traditional marker pens from the root. The adjustment assembly includes a circular mounting plate 201 and a through groove 202. The circular mounting plate 201 is fixedly connected to one side of the inner wall of the connecting sleeve 2. The circular mounting plate 201 provides a stable mounting reference for components such as the spring 203 and the slide bar 204, and at the same time separates the ink storage cavity of the pen body 1 from the adjustment cavity of the connecting sleeve 2 to prevent disordered ink flow. The through groove 202 runs through and is located in the middle of the circular mounting plate 201. The through groove 202 serves as the main channel for ink flow, and its effective opening directly determines the amount of ink output. Two springs 203 are installed through and near both sides of the circular mounting plate 201 close to the pen body 1. The springs 203 provide a restoring force, which pushes the sealing plate 205 and the conical plate 206 to quickly return to their original positions after the writing pressure is removed, blocking the ink flow. The two springs 203 are far from the pen body 1. A slide rod 204 is fixedly connected to one side of the circular mounting plate 201, and the end of the slide rod 204 away from the spring 203 passes through the circular mounting plate 201. The slide rod 204 is used to transmit the spring force and the displacement of the sealing plate to ensure that the movement direction is stable along the axial direction and avoid jamming or deviation. A sealing plate 205 is fixedly connected to one side of the two slide rods 204 that passes through the circular mounting plate 201. The sealing plate 205 and the circular mounting plate 201 cooperate to form a dynamic seal to prevent ink from leaking from the installation gap of the slide rod 204. A conical plate 206 is fixedly connected to the middle of the side of the sealing plate 205 near the slide rod 204, and the conical plate 206 is located in the inner cavity of the through groove 202. The conical plate 206 forms a gradual flow gap with the inner wall of the through groove 202 through the conical surface, so as to realize the linear adjustment of the ink output with the pressure. One side of the tapered ink-guiding pen tip 4 abuts against the tapered plate 206. This abutting structure can transmit the writing pressure on the pen tip to the tapered plate 206 without loss, ensuring that the pressure is converted into a change in the channel opening. A movable ring 207 is provided in the middle of the inner cavity of the connecting sleeve 2. A conical groove 208 is formed through the middle of the movable ring 207, and the conical groove 208 cooperates with the conical ink guide pen tip 4. The conical groove 208 and the conical surface of the conical ink guide pen tip 4 are closely fitted, which not only ensures the stable positioning of the pen tip, but also transmits the retraction displacement of the pen tip synchronously. There are mounting grooves 209 on all four sides of the outer wall of the movable ring 207. The mounting grooves 209 provide rotation space and mounting base for the swing rod 210, avoiding interference during swinging. The inner cavities of the four mounting grooves 209 are rotatably connected to... The four swing rods 210 are equipped with hinge seats 211 on the side away from the moving ring 207. The side of the hinge seats 211 away from the swing rods 210 is fixedly connected to the inner wall of the connecting sleeve 2. The hinge seats 211 serve as the rotation fulcrum of the swing rods 210, ensuring that the swing rods 210 swing only in the radial direction and avoiding displacement direction deviation. One side of each of the four swing rods 210 is fixedly connected with a tension spring 212. The tension spring 212 is stretched when the pen tip retracts, storing elastic potential energy to provide power for the pen tip to reset with the moving ring 207 after the pen stops. A circular mounting plate 213 is fixedly connected to the inner wall of the connecting sleeve 2 on the side away from the circular mounting plate 201. One side of the circular mounting plate 213 is fixedly connected to four tension springs 212. The circular mounting plate 213 provides a stable fixed end for the tension springs 212 and cooperates with the moving ring 207 to form a sealed cavity, further improving the leak-proof performance.

[0024] When using a marker pen with adaptive ink output adjustment based on writing pressure in this embodiment, when the user writes, the conical ink-guiding tip 4 retracts backward under the pressure of the paper surface, resisting and pushing the conical plate 206 and the sealing plate 205 towards the pen body 1, compressing the springs 203 and the slide bar 204 on both sides. Since the conical plate 206 is frustoconical, its outer wall and the inner wall of the through groove 202 form a gradual gap. As the conical plate 206 gradually withdraws from the through groove 202, the effective flow section of the through groove 202 increases synchronously with the writing pressure: the greater the pressure, the longer the retraction distance of the conical plate 206, the larger the opening of the through groove 202, and the more ink in the pen body 1 flows into the inner cavity of the connecting sleeve 2 through the through groove 202, thus achieving a linear match between writing pressure and ink output. When the user stops writing, the pressure on the conical ink-guiding pen tip 4 disappears, and the spring 203 pushes the sealing plate 205 and the conical plate 206 to reset via the slide bar 204. The conical plate 206 re-inserts into the through groove 202, completely blocking the flow of ink and preventing ink leakage. At the same time, the tension spring 212 retracts and pulls the swing rod 210 to reset, causing the moving ring 207 and the conical ink-guiding pen tip 4 to extend forward and return to their initial positions.

[0025] Example 2 like Figures 4 to 7As shown, this invention provides a marker pen with adaptive ink output adjustment based on writing pressure. The invention utilizes circular grooves 5 and 503 respectively opened on circular mounting plate 201 and 213, in conjunction with circular sealing plates 501 and 502 fixedly connected to the moving ring 207. This achieves full-process sealing protection for the moving ring 207 during its reciprocating motion. This design employs a sliding sealing structure, ensuring the moving ring 207 remains tightly fitted to the inner wall of its respective groove as the pen tip retracts or resets, effectively preventing ink from seeping through the gap between the moving ring 207 and the front and rear mounting plates. Compared to the leakage that easily occurs in traditional marker pens due to movement gaps, the double sealing structure of this invention significantly improves the leak-proof performance during writing adjustment, while not interfering with the normal guidance and displacement of the moving ring 207. This achieves a balance between sealing reliability and smooth adjustment, making the marker pen more stable and durable in use, and eliminating the risk of ink leakage when idle.

[0026] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0027] In this embodiment, a circular groove 5 is provided on the side of the circular mounting plate 201 away from the pen body 1. The circular groove 5 provides a precise sliding track for the circular sealing plate 501 and forms one side boundary of the sealing cavity to prevent ink from leaking from the installation gap. A circular groove 503 is provided on the side of the circular mounting plate 213 away from the pen tip sleeve 3. The circular groove 503 and the circular groove 5 are symmetrically distributed, providing a stable sliding space for the circular sealing plate 502. Together with the circular groove 5, a double sealing structure is constructed to improve the sealing reliability. A circular sealing plate 501 is fixedly connected to one side of the moving ring 207, and the circular sealing plate 501 slides in the circular groove 5. The sliding fit between the circular sealing plate 501 and the circular groove 5 allows it to move synchronously with the moving ring 207, always sealing the gap between the moving ring 207 and the circular mounting plate 201. A circular sealing plate 502 is fixedly connected to the side of the moving ring 207 away from the circular sealing plate 501, and the circular sealing plate 502 slides in the circular groove 503. The circular sealing plate 502 and the circular groove 503 form a second sliding seal, which works in conjunction with the circular sealing plate 501 to completely block the leakage path of ink during the movement of the adjustment component.

[0028] When using a marker pen with adaptive ink output adjustment based on writing pressure in this embodiment, the moving ring 207 moves backward synchronously when the conical ink-guiding tip 4 retracts. The moving ring 207 slides in the circular groove 5 through a circular sealing plate 501 on one side and in the circular groove 503 on the other side. Through the two sliding sealing structures, the inner cavity of the connecting sleeve 2 and the ink storage cavity of the pen body 1 are always kept sealed and isolated to prevent ink leakage during the adjustment process. When the moving ring 207 moves backward, the swing rods 210 on the four sides of the outer wall swing outward around the hinge seat 211, stretching the tension spring 212 to store elastic potential energy for the reset action after the pen stops, ensuring that the pen tip can quickly rebound to the initial state.

[0029] Example 3 like Figures 3 to 10 As shown, this invention provides a marker pen with adaptive ink output adjustment based on writing pressure. The invention achieves automatic sealing switching between the marker pen's storage and usage states through a sealing component installed on the nib sleeve 3 and an angled contact block 701 installed on the pen cap 7. Through the cooperation of the swing plate 605, the compression plate 608, and the circular sealing sleeve 601, the sealing sleeve is automatically compressed and wrapped around the conical ink-guiding nib 4 when the pen cap 7 is put on, forming a sealed protection. Removing the pen cap 7 automatically resets and unlocks thanks to the spring 607. This structure effectively prevents ink evaporation, drying, and leakage. Simultaneously, the limiting plate 606 and the limiting groove 604 ensure stable movement and prevent jamming, significantly improving the marker pen's lifespan and reliability, and solving the defects of traditional marker pens such as poor sealing, easy drying, and ink leakage.

[0030] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0031] In this embodiment, a sealing component is installed in the inner cavity of the pen tip sleeve 3. The sealing component is used to seal and protect the tapered ink-guiding pen tip 4 when the marker is not in use, to prevent ink evaporation and leakage. The sealing component includes a placement groove 6 and a circular sealing sleeve 601. The placement groove 6 passes through and is opened in the middle of the pen tip sleeve 3. The placement groove 6 provides installation and positioning space for the circular sealing sleeve 601, ensuring that the sealing sleeve and the pen tip are coaxially aligned. The circular sealing sleeve 601 passes through and is installed in the middle of the inner cavity of the placement groove 6. The circular sealing sleeve 601 is made of elastic material and can be squeezed and deformed to tightly wrap the pen tip to form a sealing barrier. The outer wall of the pen tip sleeve 3 is permeated with evenly distributed swing grooves 602. Swing grooves 602 provide rotation space for the swing plate 605, preventing interference during movement. A second swing groove 603 is formed on one side of the inner cavity of one swing groove 602. The second swing groove 603 accommodates the spring 607 and the compression plate 608, providing installation space for the sealing drive structure. Limiting grooves 604 are formed on both sides of the second swing groove 603. The limiting grooves 604 cooperate with the limiting plate 606 to limit the swing angle of the swing plate 605, preventing excessive displacement and structural damage. The swing plate 605 is rotatably connected to one side of the inner cavity of the first swing groove 602. The swing plate 605 acts as a force transmission carrier, converting the pressure of the angled contact block 701 into the driving force of the compression plate 608. The outer walls of the swing plate 605 are... A limiting plate 606 is fixedly connected and slides within a limiting groove 604. When the limiting plate 606 slides along the limiting groove 604, it ensures that the swing plate 605 rotates only around the pivot axis to avoid deviation. A spring 607 is fixedly connected to one side of the bottom of the swing plate 605, and the side of the spring 607 away from the swing plate 605 is fixedly connected to the inner wall of the swing groove 603. The spring 607 provides a reset force. After the pen cap 7 is removed, the swing plate 605 is pushed to reset, releasing the pressure on the circular sealing sleeve 601. A pressing plate 608 is fixedly connected to one side of the bottom of the swing plate 605, and the pressing plate 608 cooperates with the circular sealing sleeve 601. The pressing plate 608 can convert the swing motion of the swing plate 605 into a radial pressing force on the circular sealing sleeve 601, thereby achieving the shrinkage and wrapping of the sealing sleeve. A pen cap 7 is fitted on the outer wall of the pen body 1 near the connecting sleeve 2 and the pen tip sleeve 3. The pen cap 7 is used to protect the pen tip from collision and also provides a mounting carrier for the angled contact block 701. The inner cavity of the pen cap 7 is fixedly connected with the angled contact block 701, and the angled contact block 701 abuts against the swing plate 605. The angled contact block 701 uses the inclined surface structure to convert the axial force into the radial driving force of the swing plate 605 when the pen cap 7 is fitted, so as to realize the automatic triggering of the sealing component. A tail plug 8 is installed on the side of the pen body 1 away from the connecting sleeve 2. The tail plug 8 is used to seal the tail of the ink storage cavity of the pen body 1 to prevent ink leakage. At the same time, it can also serve as the mounting base for a one-way air inlet valve to balance the air pressure inside and outside the cavity.

[0032] When using a marker pen with adaptive ink output based on writing pressure in this embodiment, when the user puts on the pen cap 7, the angled contact block 701 inside the pen cap 7 inserts into the swing groove 602, abutting and pressing down on the swing plate 605, causing the swing plate 605 to rotate around the pivot, compressing the spring 607, and simultaneously driving the pressing plate 608 to move inward, pressing the circular sealing sleeve 601, so that the circular sealing sleeve 601 tightly wraps the conical ink-guiding pen tip 4, forming a secondary seal to further prevent ink evaporation and leakage. When the pen cap 7 is removed, the spring 607 resets and pushes the swing plate 605 and the pressing plate 608 outward, the circular sealing sleeve 601 restores its elastic deformation, releasing the wrapping of the conical ink-guiding pen tip 4, allowing the pen tip to extend normally for writing, realizing automatic switching between sealing when stored and unlocking when writing.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marker pen that adaptively adjusts ink output based on writing pressure, comprising a pen body (1) and a connecting sleeve (2) installed on one side of the pen body (1), wherein a pen tip sleeve (3) is installed on the side of the connecting sleeve (2) away from the pen body (1), and a tapered ink-guiding pen tip (4) is installed in the inner cavity of the pen tip sleeve (3), and one side of the tapered ink-guiding pen tip (4) passes through the pen tip sleeve (3) and is installed in the connecting sleeve (2), characterized in that: An adjustment assembly is installed in the inner cavity of the connecting sleeve (2); The adjustment assembly includes a circular mounting plate (201) and a through groove (202). The circular mounting plate (201) is fixedly connected to one side of the inner wall of the connecting sleeve (2). The through groove (202) passes through and is opened in the middle of the circular mounting plate (201). Two springs (203) pass through and are installed on both sides of the circular mounting plate (201) near the pen body (1). A sliding rod (204) is fixedly connected to the side of the two springs (203) away from the circular mounting plate (201). The end of the sliding rod (204) away from the spring (203) passes through the circular mounting plate (201). A sealing plate (205) is fixedly connected to the side of the two sliding rods (204) passing through the circular mounting plate (201). A conical plate (206) is fixedly connected to the middle of the side of the sealing plate (205) near the sliding rod (204). The conical plate (206) is located in the inner cavity of the through groove (202). One side of the conical ink-guiding pen tip (4) abuts against the conical plate (206).

2. The marker pen with adaptive ink output adjustment based on writing pressure according to claim 1, characterized in that: The inner cavity of the connecting sleeve (2) is provided with a movable ring (207). The middle of the movable ring (207) is provided with a conical groove (208) and the conical groove (208) is matched with the conical ink guide tip (4). The four sides of the outer wall of the movable ring (207) are provided with mounting grooves (209). The inner cavities of the four mounting grooves (209) are rotatably connected with swing rods (210). The side of the four swing rods (210) away from the movable ring (207) is provided with a hinge seat (211). The side of the hinge seat (211) away from the swing rod (210) is fixedly connected to the inner wall of the connecting sleeve (2). The side of the four swing rods (210) is fixedly connected with a tension spring (212).

3. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 1, characterized in that: The inner wall of the connecting sleeve (2) is fixedly connected to the side away from the circular mounting plate one (201) with a circular mounting plate two (213), and one side of the circular mounting plate two (213) is fixedly connected to four tension springs (212).

4. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 1, characterized in that: The circular mounting plate (201) has a circular groove (5) on the side away from the pen body (1).

5. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 3, characterized in that: The circular mounting plate 2 (213) has a circular groove 2 (503) on the side away from the pen tip sleeve (3).

6. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 2, characterized in that: One side of the movable ring (207) is fixedly connected to a circular sealing plate (501), and the circular sealing plate (501) slides in the circular groove (5). The side of the movable ring (207) away from the circular sealing plate (501) is fixedly connected to a circular sealing plate (502), and the circular sealing plate (502) slides in the circular groove (503).

7. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 1, characterized in that: The inner cavity of the pen tip sleeve (3) is equipped with a sealing component, which includes a placement groove (6) and a circular sealing sleeve (601). The placement groove (6) passes through and is opened in the middle of the pen tip sleeve (3), and the circular sealing sleeve (601) passes through and is installed in the middle of the inner cavity of the placement groove (6).

8. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 1, characterized in that: The outer wall of the pen tip sleeve (3) is provided with a uniformly distributed swing groove 1 (602). A swing groove 2 (603) is provided on one side of the inner cavity of one of the swing grooves 1 (602). Limiting grooves (604) are provided on both sides of the swing groove 2 (603). A swing plate (605) is rotatably connected to one side of the inner cavity of the swing groove 1 (602). Limiting plates (606) are fixedly connected to both sides of the outer wall of the swing plate (605), and the limiting plates (606) slide in the limiting grooves (604). A spring 3 (607) is fixedly connected to one side of the bottom of the swing plate (605), and the side of the spring 3 (607) away from the swing plate (605) is fixedly connected to one side of the inner wall of the swing groove 2 (603). A pressing plate (608) is fixedly connected to one side of the bottom of the swing plate (605), and the pressing plate (608) cooperates with the circular sealing sleeve (601).

9. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 1, characterized in that: The pen body (1) is fitted with a pen cap (7) on the outer wall of the side close to the connecting sleeve (2) and the pen tip sleeve (3). The inner cavity of the pen cap (7) is fixedly connected with an angled contact block (701), and the angled contact block (701) abuts against the swing plate (605).

10. A marker pen with adaptive ink output adjustment based on writing pressure according to claim 1, characterized in that: A tail plug (8) is installed on the side of the pen body (1) away from the connecting sleeve (2).

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