Liquid outlet pen

Abstract

The application discloses a liquid outlet pen, which comprises a sleeve, a tubular structure with an inner cavity for material flow, a gas outlet hole arranged on the side wall of the sleeve, a flow divider arranged on the outer circumferential side of the sleeve and connected with the gas outlet hole, and the flow divider can absorb the material flowing in the inner cavity of the sleeve through the gas outlet hole, and the air passage capacity of the flow divider decreases along the liquid outlet direction of the material. By arranging the flow divider with the decreasing air passage capacity, the storage, throttling and buffering functions of the material can be integrated, so that the defects of the existing liquid outlet device in continuous material supply and leakage prevention are solved by only changing the physical characteristics of the flow divider itself without introducing a complex valve or pump body structure, and a simple, efficient and reliable solution is provided for stable and controllable output of the material.

Description

Technical Field

[0001] This application relates to the field of direct-liquid dispensing pen technology, and particularly to a dispensing pen. Background Technology

[0002] Direct-liquid dispensing pens, such as cosmetic pens or markers widely used in cosmetics, marking, and correction, are favored for their simple structure and large liquid capacity. Their core principle is to use the pressure difference between the liquid reservoir and the pen tip and capillary action to directly deliver liquid materials to the pen tip.

[0003] However, existing direct-liquid pens generally suffer from insurmountable defects, specifically: when the liquid reservoir is full, due to the lack of an effective buffering and throttling mechanism, the material often overflows excessively due to gravity or pressure fluctuations, leading to serious leakage and dripping problems, polluting the usage environment and causing waste; when the material in the reservoir gradually decreases, the supply pressure drops accordingly, and it is very easy to experience interrupted or broken lines due to insufficient supply, making it impossible to guarantee continuous and stable writing or smearing; in addition, the simple direct supply structure is also difficult to guarantee uniform liquid output, resulting in uneven line thickness or inconsistent smearing depth. These problems seriously affect the user experience and greatly limit the application of direct-liquid pens in situations requiring high precision and high reliability. Summary of the Invention

[0004] In view of the above-mentioned problems of the prior art, the purpose of this application is to provide a liquid dispensing pen that can continuously supply material and prevent leakage.

[0005] To address the aforementioned problems, this application provides a liquid dispensing pen, comprising: The bushing is a hollow tubular structure for material flow, and the side wall of the bushing is provided with air vents. A flow divider is disposed on the outer periphery of the bushing and connected to the vent hole, so as to absorb the material flowing inside the bushing through the vent hole. The air flow capacity of the flow divider decreases along the liquid outflow direction of the material.

[0006] Optionally, the flow divider is a foamed material, and the flow divider has a microporous structure to allow material to permeate; The porosity of the diverter decreases gradually along the liquid outlet direction to create progressive resistance to the flowing material.

[0007] Optionally, the diverter is provided with a plurality of diverting channels, which are arranged sequentially at intervals along the circumference of the liquid outlet direction.

[0008] Optionally, the liquid dispensing pen includes at least two of the flow-diverting components, and the at least two flow-diverting components are arranged sequentially along the liquid dispensing direction; Along the liquid outlet direction, the density of the diversion channels within adjacent diversion components increases in a gradient.

[0009] Optionally, the diversion component includes multiple diversion zones circumferentially along the liquid outlet direction, and the density of the diversion channels within the multiple diversion zones varies periodically.

[0010] Optionally, the outer periphery of the diverter is a closed structure that can be closed, so that the diverter can cover the corresponding section of the bushing.

[0011] Optionally, the liquid dispensing pen further includes: A brush holder includes a liquid storage chamber and a liquid outlet. The liquid outlet of the brush holder is sleeved on the outer periphery of the flow divider, and the liquid storage chamber is used to store the material. A water-guiding core is inserted into the internal cavity of the bushing. One end of the water-guiding core is used to draw liquid from the liquid storage cavity of the brush sleeve seat, and the other end of the water-guiding core extends toward the liquid outlet end of the brush sleeve seat.

[0012] Optionally, the liquid dispensing pen further includes a stirring element disposed inside the brush sleeve seat and located in the liquid storage chamber for agitating the material.

[0013] Optionally, the liquid dispensing pen further includes: The brush bristles and the brush sleeve are fitted around the outer periphery of the brush bristles, and the water-guiding core can be embedded into the interior of the brush bristles. A connector is disposed inside the liquid outlet end of the brush sleeve seat. One end of the connector is connected to the brush sleeve, and the other end of the connector is sleeved on the outer wall surface at the bushing end, so as to connect the brush sleeve and the bushing after the diverter is sleeved on the outer wall of the bushing.

[0014] Optionally, an isolation ring is provided between adjacent diverting components, and the isolation ring is provided with a connecting hole, which allows material to pass through the adjacent diverting components step by step.

[0015] Based on the above technical solution, the liquid dispensing pen provided in this application has the following beneficial effects: By setting up a flow divider with decreasing ventilation capacity, the functions of material storage, throttling, and buffering can be integrated into one. In this way, without introducing complex valve or pump structure, the shortcomings of existing liquid discharge devices in continuous material supply and leakage prevention are solved by simply changing the physical characteristics of the flow divider itself. This provides a simple, efficient, and reliable solution for stable and controllable material output. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a cross-sectional view of the liquid dispensing pen with a primary flow divider provided in the first embodiment of this application.

[0018] Figure 2 yes Figure 1 A magnified view of point O in the image.

[0019] Figure 3 yes Figure 1 Cross-sectional view of various implementation methods at point AA.

[0020] Figure 4 This is a cross-sectional view of the liquid dispensing pen with two-stage flow dividers provided in the second embodiment of this application.

[0021] Figure 5 yes Figure 4 A magnified view of point P in the image.

[0022] Figure 6 yes Figure 4 Cross-sectional view at point BB.

[0023] Figure 7 yes Figure 4 Cross-sectional view at point C.

[0024] Figure 8 This is a cross-sectional view of the liquid dispensing pen with a three-stage flow divider provided in the third embodiment of this application.

[0025] Figure 9 yes Figure 8 A magnified view of part Q in the image.

[0026] Figure 10 yes Figure 8 Cross-sectional view at point DD.

[0027] Figure 11 yes Figure 8 Cross-sectional view at EE.

[0028] Figure 12 yes Figure 8 Cross-sectional view at FF.

[0029] The following are explanations of the reference numerals in the attached figures: 100. Dispensing pen; 11. Brush bristles; 12. Brush sleeve; 21. Top cover; 22. Spring; 23. Inner cover; 31. Diverter; 311. Diverter channel; 31a. First-stage diverter; 31b. Second-stage diverter; 31c. Third-stage diverter; 32. Brush sleeve holder; 321. Liquid storage chamber; 322. Opening; 33. Plug; 34. Base; 35. Stirring component; 36. Water inlet core; 37. Bushing; 371. Air outlet; 38. Connector; M. Dispensing direction of material. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0032] like Figures 1 to 12 As shown, this application discloses a liquid dispensing pen 100, which includes: The bushing 37 is a hollow tubular structure for material flow, and the side wall of the bushing 37 is provided with multiple air outlets 371.

[0033] The diverter 31 is disposed on the outer periphery of the bushing 37 and connected to the vent 371 so that it can absorb the material flowing inside the bushing 37 through the vent 371. The ventilation capacity of the diverter 31 decreases along the liquid discharge direction M of the material.

[0034] It is understood that the liquid dispensing pen 100 can be an eyeliner pen (or liquid eyeliner), eyebrow pen, fountain pen, water-based pen, brush, or any other liquid dispensing pen 100 with bristles 11 and a direct liquid dispensing method; no specific limitation is made here. Correspondingly, the materials described in this embodiment correspond to the liquid used in the various types of liquid dispensing pens 100.

[0035] In a possible embodiment, the sidewall of the bushing 37 is provided with a plurality of air outlets 371, which are arranged sequentially along the liquid discharge direction M of the material, and each air outlet 371 is connected to the flow divider 31.

[0036] In this embodiment, the diverter 31 and the bushing 37 are interference fit so that the diverter 31 tightly covers the bushing 37.

[0037] It is understandable that the material can flow inside the bushing 37, and since the diverter 31 is connected to the vent 371 on the side wall of the bushing 37, some material will be absorbed by the diverter 31 and temporarily stored. In this way, when the material in the bushing 37 decreases and the main supply is insufficient, the material previously stored in the diverter 31 will seep back into the main channel of the bushing 37 through the vent 371 under the drive of the internal and external pressure difference, and continue to flow towards the pen tip.

[0038] Furthermore, this "buffer-release" mechanism is equivalent to connecting one or more backup material libraries in parallel with the main flow path, which can effectively extend the effective working time of the liquid dispensing pen 100 and fundamentally solve the problems of dispensing interruption and line breakage that are prone to occur when the material supply is insufficient in the existing technology, thus ensuring the continuous and stable output of materials.

[0039] It is understood that the vent 371 in this application has a dual function of air intake and liquid discharge. Specifically, by designing the vent 371, the air pressure balance of the material flow inside the bushing 37 can be achieved; by designing the vent 371, material can be drawn from inside the bushing 37, so that the flow divider 31 can store a portion of the material.

[0040] In this embodiment, the ventilation capacity of the diverter 31 decreases gradually along the liquid outlet direction M.

[0041] In the embodiments of this application, at least the following two situations are included: one is that this application includes only one diversion element 31, and the ventilation capacity of the diversion element 31 decreases along the liquid outlet direction M; the other is that it includes at least two diversion elements 31, the at least two diversion elements 31 are arranged sequentially along the liquid outlet direction M, and the ventilation capacity of each diversion element 31 decreases along the liquid outlet direction M.

[0042] Understandably, the flow divider 31 employs a layout design with decreasing ventilation capacity, essentially creating a gradient resistance along the material flow path. Thus, the closer the flow divider 31 is to the liquid outlet end, the worse its ventilation capacity and the greater its resistance to material flow. Under normal use, this gradient resistance effectively slows down the speed and flow rate of material towards the outlet, preventing liquid outlet problems caused by gravity, pressure changes, or excessively fluid material. These problems include, but are not limited to, uncontrolled gushing, dripping, or seeping. This is crucial for ensuring a clean operating environment, preventing material waste, and improving the overall user experience.

[0043] Furthermore, the gradient resistance makes the flow of material from inside the bushing 37 smoother and more controllable, eliminating the "pulse-like" or "intermittent" discharge that may be caused by instantaneous pressure fluctuations, making the material output more linear. This uniform and stable flow ensures that the amount of material output in each operation is more consistent and accurate.

[0044] Therefore, by setting up a flow divider 31 with decreasing ventilation capacity, the functions of material storage, throttling and buffering can be integrated into one. In this way, without introducing complex valve or pump structure, the defects of existing liquid discharge devices in continuous material supply and leakage prevention are solved by simply changing the physical characteristics of the flow divider 31 itself. This provides a simple, efficient and reliable solution for stable and controllable material output.

[0045] As an optional implementation, the flow divider 31 is made of foamed material and has a microporous structure to allow material to permeate; The porosity of the flow divider 31 decreases gradually along the liquid outlet direction M, so as to create progressive resistance to the flowing material.

[0046] In the embodiments of this application, the microporous structure refers to a three-dimensional network structure composed of a large number of interconnected or partially interconnected tiny pores inside the material, so as to simultaneously have the functions of liquid storage, throttling and material supply.

[0047] In the embodiments of this application, the foaming material is a porous polymer foaming material, such as sponge, foamed PE, foamed PP, etc.

[0048] In the embodiments of this application, the porosity refers to the open porosity, that is, the percentage of the volume of pores that are connected to the outside and can be filled by liquid to the total volume of the material.

[0049] In this embodiment, at least two diverting elements 31 are included, and the at least two diverting elements 31 are arranged sequentially along the liquid outlet direction M. For example: Figure 9As shown, this application includes three diverting components 31, which are sequentially arranged along the liquid outlet direction M as a third-stage diverting section 31c, a second-stage diverting section 31b, and a first-stage diverting section 31a. The following description uses all three diverting components 31 as examples. The pore size range of the diverting component 31 closest to the pen tip (i.e., the first-stage diverting section 31a) is between 80μm and 200μm, enabling rapid absorption and large-scale buffering of material with minimal resistance to material flow. The pore size range of the diverting component 31 in the middle (i.e., the second-stage diverting section 31b) is between 20μm and 80μm, allowing it to both receive material and create initial throttling of the flowing material. The pore size range of the diverting component 31 furthest from the pen tip (i.e., the third-stage diverting section 31c) is between 0.5μm and 20μm, generating strong capillary force and flow resistance, allowing the material to be supplied to the pen tip at the most stable and slowest speed.

[0050] It is understood that the gradient decrease refers to a step-like, non-uniform, and regularly decreasing distribution along the material's outflow direction M.

[0051] Understandably, the higher the porosity of the diverter 31, the more interconnected pores there are within the material, resulting in lower resistance to the flow of materials and gases; conversely, the lower the porosity of the diverter 31, the greater the flow resistance. Therefore, by making the porosity of the diverter 31 decrease along the liquid outlet direction M, the low-porosity diverter 31 near the pen tip acts like a "throttle valve" during use, significantly increasing the resistance to material outflow and effectively preventing excessive material outflow and dripping due to gravity, shaking, or temperature changes. Moreover, this gradient resistance also makes the material flow smoother, avoiding sudden fluctuations in liquid outlet volume caused by instantaneous pressure changes, and ensuring the uniformity and stability of the liquid outlet volume.

[0052] Understandably, porosity affects not only resistance but also directly the liquid storage capacity. A high-porosity distributor 31 has a larger internal space and stronger capillary action, enabling it to quickly absorb and store large amounts of material. While a low-porosity distributor 31 has relatively weaker liquid storage capacity, its denser microporous structure generates stronger capillary force, more effectively "locking in" the material and releasing it slowly. Thus, when the material decreases, these stored materials, driven by the gradient difference and capillary force, will sequentially pass through each stage of the distributor 31, ultimately being stably and continuously transported by the low-porosity distributor 31. This ensures that even after the material is exhausted, the dispensing pen 100 can still maintain effective dispensing for a period of time, completely solving the "broken line" problem.

[0053] For example: Based on the above, such as Figure 9As shown, this application includes three diverting components 31, which are sequentially arranged along the liquid outlet direction M as a third-stage diverting section 31c, a second-stage diverting section 31b, and a first-stage diverting section 31a. The porosity of the diverting component 31 closest to the pen tip (i.e., the first-stage diverting section 31a) is 85%, the porosity of the diverting component 31 in the middle (i.e., the second-stage diverting section 31b) is 60%, and the porosity of the diverting component 31 furthest from the pen tip (i.e., the third-stage diverting section 31c) is 30%.

[0054] like Figure 3 , Figures 6 to 7 and Figures 10 to 12 As shown, the flow divider 31 is provided with a plurality of flow divider channels 311, which are arranged sequentially at intervals along the circumference of the liquid outlet direction M. The flow divider channels 311 are used for flow divider and liquid storage.

[0055] In the embodiments of this application, the "several" refers to an indeterminate, but greater than one, complex number, that is, the diversion component is provided with at least two diversion channels 311. There is no specific upper limit to the number of diversion channels 311, which can be set based on the ventilation capacity of the liquid pen 100.

[0056] In this embodiment of the application, the number of diversion channels 311 is 15, that is, the included angle between adjacent diversion channels 311 is 24°.

[0057] Understandably, when the material inside the bushing 37 enters the distributor 31 through the vent 371, these circumferentially spaced distribution channels 311 act as a "distribution network," rapidly and evenly dispersing the material that has seeped into the distributor 31 throughout its circumferential and axial space. Without these orderly distribution channels 311, the material might become locally saturated in the area directly opposite the vent 371, while other areas would not absorb enough, leading to uneven liquid storage and unstable material supply. Therefore, the design of the distribution channels 311 ensures that the material can be evenly distributed to all parts of the distributor 31, greatly improving liquid storage efficiency and space utilization.

[0058] Understandably, the diversion channel 311 is also a structured "liquid storage tank". Compared with the disordered microporous structure, these ordered channels have a clear volume and shape, and can store more material. Thus, under the same volume of the diversion component 31, the structure with the diversion channel 311 can usually provide more effective liquid storage space than completely dense foamed material. When the main material supply is insufficient, the material stored in the diversion channel 311 will be continuously and stably released, providing a solid guarantee for continuous material supply and effectively preventing line breakage.

[0059] As an optional implementation, the liquid dispensing pen 100 includes at least two of the aforementioned diverting elements 31, which are sequentially arranged along the liquid dispensing direction M. In this embodiment, it includes three diverting elements 31, which are sequentially arranged along the liquid dispensing direction M as a third-stage diverting section 31c, a second-stage diverting section 31b, and a first-stage diverting section 31a.

[0060] Along the liquid outlet direction M, the density of the diversion channels 311 within the adjacent diversion components 31 increases in a gradient.

[0061] It is understandable that the ventilation capacity of each diversion component 31 decreases along the liquid outlet direction M, specifically manifested as a gradient increase in the density of the diversion channels 311 within adjacent diversion components 31.

[0062] Therefore, the arrangement of the flow dividers 31 with this structural form, through the linkage of multiple flow dividers 31, constitutes a "step-by-step throttling" fluid buffer system. Specifically, the first-stage flow divider 31a has the lowest air permeability, which utilizes its dense structure to create a huge flow resistance to the material, reducing the material flow rate to an extremely low level, ensuring that only slow and uniform material can ultimately reach the pen tip; the second-stage flow divider 31b has a medium air permeability to ensure that the material can be transferred smoothly; the third-stage flow divider 31c has the highest air permeability, which can quickly absorb and store large amounts of liquid, effectively preventing leakage caused by excessive instantaneous pressure.

[0063] Furthermore, as the density of the diversion channels 311 increases, the ventilation capacity of the diversion component 31 decreases. This is because the denser the diversion channels 311, the thinner their walls, the more compact the overall structure, and the greater the resistance to material flow.

[0064] When the pen tip is pointing downwards or the internal pressure increases due to temperature changes, the material tends to flow downwards. At this time, the high-density flow divider 31 near the pen tip forms a strong end resistance, which can effectively prevent uncontrolled outflow of material, fundamentally eliminating leakage and dripping. Furthermore, this gradient resistance can also gradually slow down the material flow rate, avoiding "jetting" or "surging" caused by sudden pressure changes, ensuring smooth and controllable liquid discharge, and providing an excellent user experience.

[0065] Understandably, the gradient change in channel density also leads to a gradient change in liquid storage characteristics. Specifically, the lower density of the diversion channels 311 in the diversion component 31 further away from the pen tip indicates that its internal diversion channels 311 are larger and the liquid storage space is more open, enabling it to absorb and store a larger amount of material from the bushing 37 more quickly. Conversely, the higher density of the diversion channels 311 in the diversion component 31 closer to the pen tip indicates that its internal channels are finer. Although the liquid storage capacity per unit volume may be smaller, the capillary force it generates is stronger, acting like a "precision regulator" that can release the delivered material to the pen tip at a more stable and slower rate.

[0066] As an optional implementation, the bushing 37 has a plurality of vent holes 371 on its side wall. The plurality of vent holes 371 are arranged sequentially along the liquid discharge direction M of the material, and each vent hole 371 is connected to the flow divider 31. Preferably, each vent hole 371 and each flow divider 31 are correspondingly arranged.

[0067] As an optional implementation, the diverter 31 includes multiple diverting zones along the circumferential direction of the liquid outlet M, and the density of the diverting channels 311 in the multiple diverting zones varies periodically.

[0068] In the embodiments of this application, the plurality of diversion zones refer to at least two independent regions with different diversion channel densities in the circumferential direction of the diversion component. Specifically, it may include 3, 4, 5 or even more regions with different densities, so that they can appear periodically.

[0069] Understandably, the periodically changing density of the diversion channel 311 indicates that the diversion component 31 forms an alternating arrangement of high-density (high resistance) and low-density (low resistance) zones in the circumferential direction. The low-density zone offers less resistance to material flow, resulting in smoother material feeding; while the high-density zone offers greater resistance, leading to slower material feeding.

[0070] It is understandable that the periodic changes in the density of the shunting channel 311 are essentially periodic changes in the material's hardness and strength. Due to its more compact structure, the high-density region typically has higher mechanical strength and rigidity than the low-density region.

[0071] When the flow divider 31 is subjected to radial pressure from the bushing 37 or the outer pen shell, the high-density area acts as a rigid support point, effectively resisting deformation and protecting the internal flow divider channel 311 from being crushed, thus maintaining the unobstructed flow of materials. Furthermore, when the dispensing pen 100 is twisted, this periodic reinforcement structure effectively disperses stress, preventing the flow divider 31 from being damaged due to excessive twisting or misalignment with the bushing 37, thereby improving the product's durability and reliability.

[0072] As an optional implementation, the outer periphery of the diverter 31 is a closed structure that can be closed, so that the diverter 31 can cover the corresponding section of the bushing 37.

[0073] Understandably, the closed-structure diverter 31 can tightly wrap around the outer surface of the bushing 37 without gaps, ensuring that all the vents 371 on the side wall of the bushing 37, regardless of their location in the circumferential direction, can be effectively covered and connected by the diverter 31.

[0074] In this way, the material on the bushing 37 can be evenly seeped into the diverter 31 from any of the vent holes 371, achieving all-round diversion. This avoids the problem of some vent holes 371 failing and uneven material absorption caused by gaps or partial coverage between the diverter 31 and the bushing 37. It allows the material to evenly penetrate the entire circumference of the diverter 31, making full use of the liquid storage capacity of the diverter 31 and forming a ring-shaped, uniform "material buffer layer", laying a solid foundation for subsequent stable material supply.

[0075] like Figures 1 to 2 , Figures 4 to 5 and Figures 8 to 9 As shown, the liquid dispensing pen 100 also includes: The brush holder 32 includes a liquid storage chamber 321 and a liquid outlet 322. The liquid outlet 322 of the brush holder 32 is sleeved on the outer periphery of the diverter 31, and the liquid storage chamber 321 is used to store materials. The water-guiding core 36 is inserted into the internal cavity of the bushing 37. One end of the water-guiding core 36 is used to draw liquid from the liquid storage cavity 321 of the brush sleeve seat 32, and the other end of the water-guiding core 36 extends toward the liquid outlet end 322 of the brush sleeve seat 32.

[0076] In this embodiment of the application, the liquid storage chamber 321 of the brush holder 32 is used to store materials, and a plug 33 is provided at the end of the liquid storage chamber 321 for sealing.

[0077] It is understandable that the bushing 37, the flow divider 31, etc. are all located at the liquid outlet 322 of the brush sleeve seat 32 in order to control the discharge amount of material.

[0078] Understandably, the water-drawing core 36 is inserted inside the bushing 37 and directly draws liquid from the liquid storage chamber 321 of the brush sleeve seat 32. By utilizing its own capillary action, it can actively and continuously draw material from the liquid storage chamber 321 and guide it to the liquid outlet 322.

[0079] Furthermore, the water-feeding core 36 directly supplies material to the pen tip, while a small portion of the material enters the bypass of the diverter 31 through the vent 371 on the bushing 37 for buffering. When the material in the liquid storage chamber 321 decreases, the material stored in the diverter 31 will replenish the water-feeding core 36 through the vent 371, ensuring uninterrupted supply to the main path. This coordinated design of "main path + bypass" is the main mechanism for achieving the core effect of "continuous supply".

[0080] Understandably, the end of the water-guiding core 36 facing the liquid outlet 322 is the final barrier before the material leaves the liquid outlet pen 100. Its material, diameter, and contact method with the pen tip directly determine the final output rate of the material. Therefore, by selecting water-guiding cores 36 made of different materials, such as fiber cores or sponge cores, the liquid output of the liquid outlet pen 100 can be precisely adjusted to match the throttling effect of the diverter 31, achieving the best liquid output effect without breakage or leakage.

[0081] like Figure 1 , Figure 4 and Figure 8 As shown, the liquid dispensing pen 100 also includes a stirring element 35, which is disposed inside the brush sleeve seat 32 and located in the liquid storage chamber 321 for stirring the material.

[0082] In this embodiment, the stirring element 35 can be a steel ball, a polyhedron, an elastic element, etc. When the stirring element 35 is a steel ball, it can be a solid sphere of any material, a hollow sphere made of plastic or metal, or a sphere with a textured surface (e.g., with pits or bumps on the surface). When the stirring element 35 is a polyhedron, its edges and faces can generate more complex interactions with the material.

[0083] In the embodiments of this application, the material of the agitator 35 may be determined based on the density of the material, the chemical stability of the material, and the agitation requirements of the material, but this application does not specifically limit it.

[0084] Understandably, many liquid pen 100s use materials that are not pure solutions of a single component, but rather suspensions or emulsions containing solid particles such as pigments, pearlescent powders, and functional powders. When left to stand, due to gravity, these heavier particles will gradually settle to the bottom of the brush holder 32, while the lighter oil or water phase will float to the top, resulting in material stratification.

[0085] Therefore, by designing the stirring component 35, when the user shakes the dispensing pen 100 before use, the internal stirring component 35 will roll, collide, and agitate at high speed in the liquid storage chamber 321 due to inertia. This intense mechanical agitation can effectively redisperse the settled particles, break the stratification phenomenon, and restore the material to a uniform mixing state. This ensures that the color, opacity, or functional effect of each extruded material is consistent with that of the first use, avoiding the problem of the color becoming lighter or the effect becoming worse with use.

[0086] Furthermore, some materials (especially those containing high concentrations of solid powder or easily crystallizing components) may re-aggregate into hard lumps or gels after prolonged standing. Once these lumps form, they can easily clog the inlet of the water inlet core 36 or the vent hole 371 on the bushing 37, leading to interruption of material supply. Therefore, the rolling and impact of the agitator 35 can continuously "grind" and "disperse" these potential lumps, maintaining good flowability and dispersibility of the material. Even if minor blockages begin to form, the agitation of the agitator 35 can physically clear them like a "hammer," ensuring that the "lifeline" from the liquid storage chamber 321 to the inlet of the water inlet core 36 remains unobstructed.

[0087] like Figure 2 , Figure 5 and Figure 9 As shown, the liquid dispensing pen 100 also includes: The brush bristles 11 and the brush sleeve 12 are fitted on the outer periphery of the brush bristles 11, and the water-guiding core 36 can be embedded into the interior of the brush bristles 11. The connector 38 is disposed inside the liquid outlet end 322 of the brush sleeve seat 32. One end of the connector 38 is connected to the brush sleeve 12, and the other end of the connector 38 is sleeved on the outer wall surface at the end of the bushing 37, so as to connect the brush sleeve 12 and the bushing 37 after the diverter 31 is sleeved on the outer wall of the bushing 37.

[0088] Understandably, the bristles 11 are the components that directly contact the target surface (such as skin or paper). The water-guiding core 36 is embedded inside the bristles 11, enabling the material to be directly and precisely delivered to the root or middle of the bristles 11, and then evenly distributed to the tip of each bristle 11 through capillary action. This "internal supply" design ensures that the material can evenly wet the entire brush head, avoiding material adhering only to the surface or local areas, thus achieving a uniform, dead-angle-free, and controllable coating effect, ensuring quality whether it is fine line drawing or large-area filling.

[0089] Understandably, by fitting the brush sleeve 12 around the outer periphery of the bristles 11, the dispersed bristles 11 can be gathered into a neat and sturdy whole. That is, the brush sleeve 12 protects the soft bristles 11 from being bent, contaminated or damaged during use and storage, and gives the brush head a specific shape (such as flat head, round head, angled head, etc.) to meet different application needs.

[0090] Understandably, the connector 38 is the central hub of the entire liquid dispensing pen 100, playing a crucial role in connecting, fixing, sealing, and transmitting liquids.

[0091] Specifically, one end of the connector 38 is connected to the brush sleeve 12, and the other end is fitted onto the end of the bushing 37. This can securely lock the two sub-modules with different functions together, ensuring that the material channel from the water core 36 to the bristles 11 is rigidly aligned and sealed. This prevents the brush head from shaking, falling off, or misaligning with the liquid supply during use, and ensures that the material can reach the inside of the bristles 11 directly from the end of the water core 36 without obstruction or leakage.

[0092] Furthermore, the connector 38 provides a clear axial positioning for the diverter 31, preventing it from sliding on the bushing 37 and ensuring that each diverter 31 is precisely aligned with the corresponding air outlet 371 area on the bushing 37.

[0093] In addition, workers can first assemble "brush bristles 11-brush sleeve 12" and "shield 37-diverter 31-water core 36" into two sub-modules, and finally "join them together" through connector 38, which greatly improves production efficiency and assembly accuracy.

[0094] In a possible embodiment, an isolation ring (not shown in the figure) is provided between adjacent diverter 31, and the isolation ring is provided with a connecting hole, which allows the material to pass through the adjacent diverter 31 step by step.

[0095] Understandably, setting isolation rings between the multi-stage flow dividers 31 allows for more precise control of the independent function of each flow divider 31, preventing excessive fusion between them due to compression and ensuring the stability of the gradient effect. Furthermore, the connecting holes on the isolation rings ensure that material can still pass through each stage sequentially.

[0096] like Figure 1 , Figure 4 and Figure 8 As shown, the liquid dispensing pen 100 in this embodiment of the application also includes an upper cover 21, a spring 22 and an inner cover 23, wherein the inner cover 23 is disposed inside the upper cover 21, and the spring 22 is sandwiched between the upper cover 21 and the inner cover 23.

[0097] The foregoing description has fully disclosed the specific embodiments of this application. It should be noted that any modifications made by those skilled in the art to the specific embodiments of this application do not depart from the scope of the claims. Accordingly, the scope of the claims of this application is not limited to the foregoing specific embodiments.

Claims

1. A liquid dispensing pen (100), characterized in that, It includes: The bushing (37) is a hollow tubular structure for material flow, and the bushing (37) has an air outlet (371) on its side wall. A flow divider (31) is disposed on the outer periphery of the bushing (37) and connected to the air outlet (371) so that it can absorb the material flowing inside the bushing (37) through the air outlet (371). The air flow capacity of the flow divider (31) decreases along the liquid outflow direction of the material.

2. The liquid dispensing pen according to claim 1, characterized in that, The flow divider (31) is a foamed material and has a microporous structure to allow material to permeate; The porosity of the diverter (31) decreases in a gradient along the liquid outlet direction to create progressive resistance to the flowing material.

3. The liquid dispensing pen according to claim 1, characterized in that, The diverter (31) is provided with a plurality of diverting channels (311), which are arranged sequentially at intervals along the circumference of the liquid outlet direction.

4. The liquid dispensing pen according to claim 3, characterized in that, The liquid dispensing pen includes at least two flow dividers, and the at least two flow dividers are arranged sequentially along the liquid dispensing direction; Along the liquid outlet direction, the density of the diversion channels (311) in adjacent diversion members (31) increases in a gradient.

5. The liquid dispensing pen according to claim 3, characterized in that, The diversion component (31) includes multiple diversion zones along the circumferential direction of the liquid outlet, and the density of the diversion channels (311) in the multiple diversion zones varies periodically.

6. The liquid dispensing pen according to claim 1, characterized in that, The outer periphery of the diverter (31) is a closed structure that can be closed, so that the diverter (31) can cover the corresponding section of the bushing (37).

7. The liquid dispensing pen according to claim 1, characterized in that, The liquid dispensing pen (100) also includes: The brush holder (32) includes a liquid storage chamber (321) and a liquid outlet (322). The liquid outlet (322) of the brush holder (32) is sleeved on the outer periphery of the diverter (31). The liquid storage chamber (321) is used to store the material. A water-guiding core (36) is inserted into the internal cavity of the bushing (37). One end of the water-guiding core (36) is used to draw liquid from the liquid storage cavity (321) of the brush sleeve seat (32), and the other end of the water-guiding core (36) extends toward the liquid outlet end (322) of the brush sleeve seat (32).

8. The liquid dispensing pen according to claim 7, characterized in that, The liquid dispensing pen (100) also includes a stirring element (35), which is disposed inside the brush holder (32) and located in the liquid storage chamber (321) to agitate the material.

9. The liquid dispensing pen according to claim 7, characterized in that, The liquid dispensing pen (100) also includes: The brush bristles (11) and the brush sleeve (12) are fitted on the outer periphery of the brush bristles (11), and the water-guiding core (36) can be embedded into the interior of the brush bristles (11). A connector (38) is disposed inside the liquid outlet end (322) of the brush sleeve seat (32). One end of the connector (38) is connected to the brush sleeve (12), and the other end of the connector (38) is sleeved on the outer wall surface at the end of the bushing (37) for connecting the brush sleeve (12) and the bushing (37) after the diverter (31) is sleeved on the outer wall of the bushing (37).

10. The liquid dispensing pen according to claim 1, characterized in that, An isolation ring is provided between adjacent flow dividers (31), and a connecting hole is provided on the isolation ring, which allows the material to pass through the adjacent flow dividers (31) step by step.

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