A capsule pump

Abstract

The application relates to the cosmetic technical field, in particular to a capsule pump which comprises a capsule pump main body and a main body protective shell; a liquid supply channel is formed in the capsule pump main body, the upper and lower ends of the liquid supply channel are respectively connected with a quantitative structure for quantitatively discharging liquid and a bottle mouth connecting seat for connecting a liquid storage bottle; the main body protective shell is fixedly sleeved on the outside of the capsule pump main body and detachably connected with the bottle mouth connecting seat, a liquid discharging terminal which is in communication with the quantitative structure is arranged at the top of the main body protective shell; a pressing piece is movably embedded in the side wall of the main body protective shell, when the pressing piece is pressed by external force, the capsule pump main body can be elastically deformed and restored to the initial shape, so that pressure is generated to push the cosmetic in the liquid supply channel to be accurately quantitatively discharged through the quantitative structure; after the pressing piece is loosened, the spring pump main body is reset to form negative pressure, liquid is automatically sucked from the liquid storage bottle to supplement the liquid supply channel, and single-quantitative and reciprocating liquid discharging are realized. The application has the characteristics of improving convenience.

Description

Technical Field

[0001] This application relates to the field of cosmetic technology, and in particular to a capsule pump. Background Technology

[0002] The core function of cosmetics is to protect the skin and hair through basic care such as cleansing, moisturizing, and sun protection, and to improve appearance imperfections and optimize facial features and contours through effects such as concealing, brightening, and sculpting. Cosmetics can enhance personal image and temperament, boost user confidence, and are suitable for aesthetic and grooming needs in daily commutes, social occasions, and other scenarios.

[0003] In related technologies, current packaging for liquid cosmetics generally adopts either a brush-dip or a pneumatic pump-type extrusion design. The former uses a brush to lift and lower to pick up an appropriate amount of cosmetic, allowing for precise control of the application area and resulting in a more even and delicate makeup effect; the latter uses negative pressure generated by a spring return to draw out the liquid, enabling one-handed dispensing, suitable for quick daily makeup application scenarios, while also reducing contact between cosmetics and air or hands, lowering the risk of contamination and spoilage.

[0004] Existing methods of dispensing cosmetics have the following problems: the amount of product dispensed by the brush is difficult to control and requires regular cleaning; the air pump needs to be equipped with a metal spring and a plastic piston, resulting in a high cost per pump and potential failure after prolonged use. In recent years, as consumers have increased their demands for user experience, the market urgently needs a more convenient and practical cosmetic dispensing structure. Summary of the Invention

[0005] To improve convenience, this application provides a capsule pump.

[0006] The capsule pump provided in this application adopts the following technical solution: A capsule pump, characterized in that it comprises a capsule pump body and a protective shell; the capsule pump body forms a liquid supply channel inside, and its upper and lower ends are respectively connected to a metering structure for metered liquid dispensing and a bottle mouth connector for connecting a liquid storage bottle; the protective shell is fixedly sleeved on the outside of the capsule pump body and detachably connected to the bottle mouth connector, and its top has a liquid dispensing terminal communicating with the metering structure; a pressing element is movably embedded in the side wall of the protective shell, and when the pressing element is pressed by an external force, the capsule pump body can undergo elastic deformation and return to its initial shape.

[0007] By adopting the above technical solution, pressing the pressing part on the side wall of the protective shell can cause the capsule pump body to elastically deform and generate pressure, pushing the cosmetic in the liquid supply channel to be accurately and quantitatively output through the quantitative structure; after releasing the pressing part, the body elastically resets to form negative pressure, automatically drawing liquid from the storage bottle into the liquid replenishment channel, realizing the effect of single quantitative and reciprocating liquid output, without the need for additional complicated operations, while also having protection and quick disassembly functions, effectively improving convenience.

[0008] Preferably, the capsule pump body has a slender cylindrical shape with a slightly curved waist on the sides; the bottom of the capsule pump body is equipped with a flat disc base, the side wall of the disc base is provided with an arc-shaped guide surface and abuts against the inner wall of the main body protective shell; the top of the bottle mouth connector is provided with a columnar liquid outlet interface with side holes, and the middle of the disc base is provided with a locking hole that engages with the liquid outlet interface.

[0009] By adopting the above technical solutions, the optimized shape of the capsule pump body can make the elastic deformation more uniform during pressing, the reset smoother, ensure the consistency of the liquid output per pumping, and reduce uneven liquid output caused by local deformation; the disc base plays a guiding and limiting role, improving the overall structural stability; at the same time, the structural fit ensures the smooth flow of cosmetics, and the tightness of the snap-fit ​​can also enhance the sealing of the connection parts and reduce the risk of leakage.

[0010] Preferably, the top of the capsule pump body and the upper edge of the card hole are integrally formed with two symmetrically arranged winglets and a mounting block; the winglets are sheet-like structures with outward curvature, used to block the liquid inlet channel of the metering structure, and expand outward when the capsule pump body is deformed by force; the mounting block is a long strip-shaped arc-shaped groove structure, which transitions with the liquid outlet interface, and the edge of the groove has a limiting notch that matches the side hole.

[0011] By adopting the above technical solutions, the symmetrical vanes can stably block the liquid inlet channel of the quantitative structure under normal conditions, reducing liquid backflow; when the capsule pump body is deformed by force, the vanes expand outward synchronously, accurately opening the liquid inlet channel to allow liquid to flow in, ensuring the accuracy of quantitative liquid output; the mounting block not only achieves a tight fit of the connection parts, but also facilitates disassembly and maintenance, and further enhances the connection sealing by precisely matching the limiting notch with the side hole, reducing leakage problems.

[0012] Preferably, the quantitative structure is a replaceable modular component, including a fan-shaped chamber with radial partitions at the top, a matching cylindrical cavity body, and a bottom snap-fit ​​structure that engages with the inner wall of the capsule pump body; the fan-shaped chamber has a quantitative liquid outlet hole, which is connected to the liquid supply channel and the liquid outlet terminal respectively, and is used to cooperate with the air pressure drive action of the capsule pump body to squeeze the cosmetic out of the fan-shaped chamber with a fixed volume.

[0013] By adopting the above technical solutions, modular adaptation is achieved, improving product versatility and ease of maintenance; the quantitative liquid outlet forms a stable liquid transport path between the liquid supply channel and the liquid outlet terminal, and under the drive of air pressure, only a quantitative amount of cosmetics in the fan-shaped chamber can be squeezed out each time, ensuring smooth and continuous liquid dispensing and reducing liquid retention and leakage.

[0014] Preferably, the cross-sectional area of ​​the quantitative liquid outlet is adjusted by changing different quantitative structures, and includes at least three different specifications.

[0015] By adopting the above technical solutions, multi-level quantitative liquid dispensing can be achieved to meet the usage habits of different users; it is also possible to select the matching liquid dispensing hole cross-sectional area for cosmetics of specific textures, adapting to the liquid dispensing needs of cosmetics of various textures, and upgrading product functions without modifying the main structure, reducing the manufacturer's R&D and production costs, and improving the product's practicality and expandability.

[0016] Preferably, the capsule pump body is made of medical-grade elastic material, and the surface of the metering structure is covered with an antibacterial coating.

[0017] By adopting the above technical solutions, the medical-grade materials are non-toxic and non-irritating, and will not release harmful substances when in contact with cosmetics, meeting the safety standards of beauty and skin care products. They also have more durable deformation capabilities and are less prone to elastic fatigue, deformation failure, and other problems after repeated pressing. By inhibiting microbial contamination, the deterioration and off-flavor of cosmetics caused by bacterial growth can be slowed down, thus extending the overall lifespan of cosmetics.

[0018] Preferably, the bottle neck connector adopts a stepped cylindrical structure, with a multi-layered stepped shape that gradually expands in diameter from the top liquid outlet end to the lower bottle body connection end, and is compatible with the internal structure of the main protective shell.

[0019] By adopting the above technical solution, the stepped expansion cylindrical structure plays an assembly guiding role, which facilitates the quick alignment and installation of the bottle mouth connector and the protective shell. The multi-layered steps limit the radial sway of the components, improve the connection stability of the overall structure, and reduce the risk of loosening during use.

[0020] Preferably, the inner wall of the bottle neck connector forms a detachable sealed connection with the liquid storage bottle through an annular snap-fit ​​groove and an annular sealing adhesive layer.

[0021] By adopting the above technical solution, the annular snap-fit ​​groove can be adapted to the bottle mouth of various sizes of liquid storage bottles. Combined with the elastic properties of the sealing adhesive layer, it can make up for the assembly gap, improve the assembly fault tolerance rate, ensure a stable sealing connection, and prevent cosmetic leakage and the intrusion of external air and dust, thereby reducing the risk of cosmetic oxidation, deterioration or contamination and ensuring the hygiene of cosmetic use.

[0022] Preferably, a protective cover is fixedly enclosed around the liquid dispensing terminal. The protective cover and the liquid dispensing terminal are keyed together and form an elongated, gradually tapered frustum shape with the main protective shell. An auxiliary liquid dispensing nozzle is also filled between the liquid dispensing terminal and the protective cover. The auxiliary liquid dispensing nozzle has a rounded wrapping structure.

[0023] By adopting the above technical solutions, the protective cover and the liquid dispensing terminal are precisely assembled and positioned through keyway cooperation, reducing rotational misalignment; the combined shape of the protective cover and the main protective shell not only matches the slender style of the pump body, but also optimizes the grip feel; the rounded wrapping structure of the auxiliary liquid dispensing nozzle is more comfortable and fits better when in contact with the skin, improving the user experience.

[0024] Preferably, the auxiliary dispensing nozzle has an inclined liquid intake port inside, which is connected to the dispensing terminal and has a smaller diameter than the dispensing terminal.

[0025] By adopting the above technical solutions, the small aperture design can limit the liquid outflow rate and single liquid volume in two ways, and the quantitative structure can further improve the quantitative accuracy and reduce waste. The inclined channel design guides the liquid to flow out in a directional manner, reducing liquid diffusion and splashing and liquid backflow when the pump body elastically resets, while making the process of taking out cosmetics more convenient and handy.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By pressing the pressing part on the side wall of the protective shell, the capsule pump body can be elastically deformed and pressure generated, pushing the cosmetic in the liquid supply channel to be accurately and quantitatively output through the metering structure; after releasing the pressing part, the body elastically returns to its original position to form negative pressure, automatically drawing liquid from the storage bottle into the liquid replenishment channel, achieving the effect of single-quantity and reciprocating liquid output without additional complicated operation, while also having protection and quick disassembly functions, effectively improving the convenience of use; 2. By optimizing the shape of the capsule pump body, the elastic deformation during pressing can be made more uniform, the reset is smoother, the consistency of the liquid output per pump is guaranteed, and the uneven liquid output caused by local deformation is reduced; the disc base plays a guiding and limiting role, which improves the overall structural stability; at the same time, the structural fit ensures the smooth flow of cosmetics, and the tightness of the snap-fit ​​can also enhance the sealing of the connection parts and reduce the risk of leakage. 3. The symmetrical vanes can stably block the liquid inlet channel of the metering structure under normal conditions, reducing liquid backflow; when the capsule pump body is deformed by force, the vanes expand outward synchronously, accurately opening the liquid inlet channel to allow liquid to flow in, ensuring the accuracy of metered liquid output; the mounting block not only achieves a tight fit of the connection parts, but also facilitates disassembly and maintenance, and further enhances the connection sealing by precisely matching the limiting notch with the side hole, reducing leakage problems. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0028] Figure 2 This is an exploded view of Embodiment 1 of this application.

[0029] Figure 3 This is a front sectional view of Embodiment 1 of this application.

[0030] Figure 4 This is a side sectional view of Embodiment 1 of this application.

[0031] Figure 5 This is a top view of the quantitative structure in Embodiment 1 of this application.

[0032] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Capsule pump body; 11. Liquid supply channel; 12. Vane; 13. Disc base; 131. Snap-fit ​​hole; 132. Arc-shaped guide surface; 133. Mounting block; 134. Limiting notch; 2. Main body protective shell; 21. Pressing component; 22. Liquid outlet terminal; 23. Protective cover; 24. Auxiliary liquid outlet nozzle; 241. Liquid dispensing port; 3. Bottle neck connector; 31. Liquid outlet interface; 311. Side hole; 32. Snap-fit ​​groove; 33. Sealing adhesive layer; 4. Quantitative structure; 41. Main body of the cavity; 42. Fan-shaped chamber; 421. Quantitative liquid outlet hole; 43. Snap-fit ​​structure; 5. Bottle cap; 6. Liquid storage bottle. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] Example 1 This application discloses a capsule pump. (Refer to...) Figure 1-4 A capsule pump includes a capsule pump body 1 and a body protective shell 2. The capsule pump body 1 has a liquid supply channel 11 inside, and its upper and lower ends are respectively connected to a metering structure 4 for metered liquid dispensing and a bottle mouth connector 3 for connecting a liquid storage bottle 6. The body protective shell 2 is fixedly sleeved on the outside of the capsule pump body 1 and is detachably connected to the bottle mouth connector 3. Its top has a liquid dispensing terminal 22 that communicates with the metering structure 4. A pressing member 21 is movably embedded in the side wall of the body protective shell 2. When the pressing member 21 is pressed by an external force, the capsule pump body 1 can undergo elastic deformation and return to its initial shape.

[0036] Correspondingly, the main protective shell 2 effectively protects the capsule pump body 1, reducing the risk of damage from external pressure and impacts. Its detachable connection to the bottle neck connector 3 facilitates quick disassembly, cleaning of the capsule pump body 1, or replacement of the storage bottle 6. The pressing component 21 features a movable, embedded design, requiring only pressing the side wall component to complete the operation, reducing complexity. Simultaneously, the metering structure 4 achieves precise control of the dispensing volume through a preset volume, ensuring consistent dosage output with each press.

[0037] Therefore, when the user presses the pressing part 21 on the side wall of the protective shell, the external force is transmitted to the capsule pump body 1 through the pressing part 21, causing it to undergo controllable elastic deformation. The volume of the internal liquid supply channel 11 is compressed instantly, and the cosmetic is forced into the metering structure 4 under pressure and accurately discharged through the liquid outlet terminal 22. After releasing the pressing part 21, the capsule pump body 1 automatically returns to its original shape due to the elasticity of the material and forms a negative pressure inside. It automatically draws the liquid into the liquid replenishment channel of the storage bottle 6 from the bottle opening connector 3, realizing the effect of single-quantity and reciprocating liquid dispensing, which effectively improves convenience.

[0038] Specifically, the capsule pump body 1 has a slender cylindrical shape with a slight curved waist on the side; the bottom of the capsule pump body 1 is equipped with a flat disc base 13, and the side wall of the disc base 13 is provided with an arc-shaped guide surface 132 that abuts against the inner wall of the main body protective shell 2; the top of the bottle mouth connector 3 is equipped with a columnar liquid outlet interface 31 with a side hole 311, and the middle of the disc base 13 is provided with a locking hole 131 that engages with the liquid outlet interface 31.

[0039] Correspondingly, the slender cylindrical body's arc-shaped waist structure enhances axial elastic response, allowing for uniform axial compression during pressing. Combined with the rigid support of the flat, circular base 13 at the bottom, this ensures reversible deformation and efficient force transmission, improving the pressing feel and cycle durability, guaranteeing stable single-cycle dispensing volume, and reducing uneven dispensing caused by localized deformation. The arc-shaped guide surface 132 on the side wall of the circular base 13 tightly abuts against the inner wall of the protective shell, achieving radial limiting and dynamic alignment of the pump body within the shell, reducing leakage or jamming caused by misalignment, and improving overall structural stability.

[0040] Meanwhile, the engagement of the central locking hole 131 with the columnar liquid outlet interface 31 of the bottle mouth connecting seat 3 forms an axial lock and flow channel alignment, ensuring that the liquid channel is free from misalignment and leakage. The side hole 311 structure allows the liquid to flow out evenly from multiple radial points, reducing single-point impact. Combined with the flow channel guidance of the liquid outlet terminal 22, a gentle and stable liquid flow output is achieved, reducing the risk of bubble generation and dripping.

[0041] In summary, the capsule pump body 1 achieves a three-in-one structure of "waist reduction + base + snap-fit" through styling optimization, which enables the pump body to maintain a stable axis during deformation and reset, effectively improving the quantitative accuracy and consistency of long-term use, and is suitable for dispensing high-precision liquids such as skin care essences.

[0042] Specifically, the top of the capsule pump body 1 and the upper edge of the jack hole 131 are integrally formed with two symmetrically arranged winglets 12 and mounting blocks 133; the winglets 12 are sheet-like structures with outward curvature, used to block the liquid inlet channel of the metering structure 4, and expand outward when the capsule pump body 1 is subjected to force deformation.

[0043] Therefore, the symmetrical vane 12 can stably block the liquid inlet channel of the metering structure 4 under normal conditions, reducing the backflow of cosmetics; when the capsule pump body 1 is deformed by force, the vane 12 expands outward synchronously, accurately opening the liquid inlet channel to allow liquid to flow in, ensuring the accuracy of metered liquid output; and the one-piece molding design makes the expansion and resetting action of the vane 12 more uniform, reducing the risk of jamming.

[0044] On the other hand, the mounting block 133 is a long, arc-shaped groove structure that transitions with the liquid outlet 31. This allows the interface to maintain axial alignment and circumferential anti-rotation during repeated pressing and disassembly, thereby reducing leakage or air bubble mixing caused by flow channel misalignment. This achieves a tight fit between the connection parts and facilitates disassembly and maintenance. Furthermore, the edge of the groove has a limiting notch 134 that matches the side hole 311. The alignment of the hole and the notch ensures that the liquid flow path is not blocked, thereby reducing the rotational misalignment between the mounting block 133 and the liquid outlet 31 and improving assembly efficiency and connection sealing.

[0045] In addition, refer to Figure 5 The quantitative structure 4 is a replaceable modular component, including a fan-shaped chamber 42 with radial partitions at the top, a matching cylindrical cavity body 41, and a bottom snap-fit ​​structure 43 that engages with the inner wall of the capsule pump body 1. The fan-shaped chamber 42 has a quantitative liquid outlet 421, which is connected to the liquid supply channel 11 and the liquid outlet terminal 22 respectively, and is used to cooperate with the air pressure drive action of the capsule pump body 1 to squeeze the cosmetic out of the fixed volume fan-shaped chamber 42.

[0046] Therefore, the top radial partition structure divides the fan-shaped chamber 42 into a clear radial liquid flow channel, ensuring that the liquid flows evenly along the partition line under air pressure, reducing the stagnation area at the edge of the chamber and reducing the liquid residue rate; the quantitative liquid outlet 421 connects the liquid supply channel 11 and the liquid outlet terminal 22 at the same time, forming a stable liquid delivery path. Under air pressure, the liquid can flow smoothly into the fan-shaped chamber 42 and be squeezed out, reducing stagnation and leakage, and ensuring the continuity of the liquid outlet action.

[0047] Furthermore, the sector-shaped chamber 42 serves as an independent metering unit, with its volume precisely molded and fixed. When the capsule pump body 1 is deformed under pressure, the internal air pressure can only completely squeeze the cosmetics in the chamber out of the metering outlet 421, achieving precise micro-level distribution of "one press, one chamber volume control", reducing the occurrence of excessive or insufficient liquid output and ensuring quantitative accuracy.

[0048] Meanwhile, the metering structure 4 is press-fitted into the inner wall of the capsule pump body 1 via the bottom snap-fit ​​structure 43, achieving axial positioning and radial zero-gap sealing of the fan-shaped chamber 42. This ensures complete alignment of the flow channel during each press, reducing leakage or flow fluctuations caused by misalignment. The snap-fit ​​structure 43 supports quick disassembly, improving product versatility and maintenance convenience.

[0049] Furthermore, the cross-sectional area of ​​the metering outlet 421 can be adjusted by replacing different metering structures 4, and includes at least three different specifications.

[0050] Therefore, by using a fixed-volume sector-shaped chamber 42, the quantitative dispensing orifices 421 with different cross-sectional areas can achieve at least three dispensing volume adjustments—"micro-volume," "standard," and "large dose"—under the same air pressure, meeting the dosage habits of different users. Furthermore, a matching dispensing orifice cross-sectional area can be selected for specific textured cosmetics to adapt to the dispensing needs of various textures. For example, a small cross-sectional area is suitable for viscous creams, reducing the risk of dosage loss due to excessively rapid dispensing; a large cross-sectional area is suitable for liquid skincare products, ensuring smooth dispensing without clogging, covering diverse usage scenarios.

[0051] In summary, by matching the cross-sectional area of ​​the quantitative dispensing orifice 421, the flow rate of the liquid under air pressure is made more stable, reducing problems such as uneven dispensing and dripping caused by excessively fast or slow flow rates, and further ensuring quantitative accuracy. Moreover, without modifying the main structure, the product function can be upgraded simply by replacing the quantitative structure 4, reducing the manufacturer's R&D and production costs. By customizing matching quantitative modules for different cosmetic categories, the market competitiveness of the products can be enhanced.

[0052] Specifically, the capsule pump body 1 is made of medical-grade elastic material, and the surface of the metering structure 4 is covered with an antibacterial coating. Medical-grade material is non-toxic, non-irritating, and resistant to chemical corrosion. It will not release harmful substances when in contact with cosmetics, making it compatible with cosmetics of different pH levels, reducing the risk of skin sensitization or irritation, and meeting the safety standards for beauty and skincare products. The medical-grade elastic material also has more durable deformation-reset properties, making it less prone to elastic fatigue, deformation, or failure after repeated pressing, ensuring a long-term stable metering effect for the capsule pump.

[0053] Furthermore, as the core component for cosmetic retention and circulation, the quantitative structure 4, with its antibacterial coating, effectively inhibits the growth of common microorganisms such as Escherichia coli and Staphylococcus aureus, reducing secondary contamination of cosmetics within the cavity. Moreover, the antibacterial coating typically possesses hydrophobic and oleophobic properties, further reducing cosmetic residue on the cavity walls and lowering the breeding ground for bacteria. By inhibiting microbial contamination, it can mitigate the spoilage and off-flavors of cosmetics caused by bacterial growth, thus comprehensively extending the product's shelf life.

[0054] In the process described above, the bottle neck connector 3 adopts a stepped cylindrical structure, with a multi-layered stepped shape that gradually expands in diameter from the top liquid outlet end to the lower bottle body connection end. This achieves a smooth transition with the bottle neck of the storage bottle 6, reduces abrupt changes in the cross-section of the liquid flow path, and ensures smooth and unobstructed liquid delivery. Furthermore, by adapting to the internal structure of the main protective shell 2, it serves as an assembly guide, facilitating quick alignment and installation of the bottle neck connector 3 with the protective shell.

[0055] Furthermore, the multi-layered steps form multiple contact surfaces with the inner wall of the protective shell, which can enhance the sealing of the connection and reduce leakage. The multi-layered steps can also limit the radial movement of the components, making the detachable connection between the protective shell and the bottle mouth connector 3 more secure, improving the connection stability of the overall structure and reducing the risk of loosening during use.

[0056] Specifically, the inner wall of the bottle neck connector 3 forms a detachable sealed connection with the liquid storage bottle 6 through an annular snap-fit ​​groove 32 and an annular sealing layer 33. The annular snap-fit ​​groove 32 can quickly engage / disengage with the protruding structure of the bottle neck of the liquid storage bottle 6, realizing tool-free disassembly and assembly of the liquid storage bottle 6, facilitating the replacement of different types of cosmetics or cleaning and maintenance; the annular snap-fit ​​groove 32 can also adapt to various sizes of bottle necks of the liquid storage bottle 6, and the elastic properties of the sealing layer 33 compensate for assembly gaps, reducing the loosening and tipping of the liquid storage bottle 6 during use, improving the assembly error tolerance, and ensuring a stable sealed connection; at the same time, it prevents cosmetic leakage and the intrusion of external air and dust, reducing the risk of oxidation, deterioration or contamination of cosmetics, and ensuring the hygiene of cosmetic use.

[0057] On the other hand, a protective cover 23 is fixedly enclosed on the outside of the liquid dispensing terminal 22. The protective cover 23 and the liquid dispensing terminal 22 are keyway-fitted and form a slender, gradually tapered truncated cone shape with the main protective shell 2. An auxiliary liquid dispensing nozzle 24 is also filled between the liquid dispensing terminal 22 and the protective cover 23. The auxiliary liquid dispensing nozzle 24 has a rounded wrapping structure.

[0058] Therefore, the protective cover 23 can prevent external dust and impurities from contacting the liquid outlet terminal 22, reducing contamination; through the keyway cooperation with the liquid outlet terminal 22, it achieves precise assembly and positioning, and forms a slender, gradually tapered truncated cone shape with the main protective shell 2. This not only matches the overall slender style of the pump body, improving the uniformity of the appearance, but also optimizes the grip and reduces slippage during use.

[0059] Furthermore, the auxiliary dispensing nozzle 24 fills the gap between the dispensing terminal 22 and the protective cover 23, which can enhance the sealing of the dispensing part. Its rounded wrapping structure is more comfortable and fits the skin when in contact, thus improving the user experience.

[0060] Meanwhile, the auxiliary dispensing nozzle 24 has an inclined liquid intake port 241 inside, which is connected to the dispensing terminal 22. Its orifice diameter is smaller than that of the dispensing terminal 22. Therefore, the small orifice diameter design can further limit the liquid outflow rate and the single dispensing volume, and together with the metering structure 4, it can further improve the metering accuracy and reduce waste; the inclined orifice design can guide the liquid to flow out in a directional manner and reduce liquid diffusion and splashing.

[0061] Furthermore, the smaller orifice diameter combined with the inclined orientation utilizes the surface tension of the liquid to create a natural "barrier effect," reducing the occurrence of liquid backflow into the supply channel 11 when the capsule pump body 1 elastically resets. It also reduces the risk of liquid leakage due to residual pressure within the chamber when the capsule pump is stationary. Simultaneously, the inclined dispensing orifice better conforms to the angle of skin or container dispensing, making liquid dispensing more convenient and easier, and resulting in a finer, more concentrated liquid flow, thus improving user comfort.

[0062] The implementation principle of a capsule pump according to an embodiment of this application is as follows: When the user presses the pressing part 21 on the side wall of the protective shell, the external force is transmitted to the capsule pump body 1 through the pressing part 21, causing it to undergo controllable elastic deformation. The volume of the internal liquid supply channel 11 is instantly compressed, and the cosmetic is forced into the metering structure 4 under pressure and accurately discharged through the liquid outlet terminal 22. After releasing the pressing part 21, the capsule pump body 1 automatically returns to its original shape due to the elasticity of the material and forms a negative pressure inside. The liquid is automatically drawn into the liquid replenishment channel of the storage bottle 6 from the bottle mouth connector 3, realizing the effect of single metering and reciprocating liquid dispensing, which effectively improves convenience.

[0063] Example 2 This application also discloses a capsule pump container. (See attached embodiments.) Figure 6 The pump includes the capsule pump described above, and also includes a cap 5 and a liquid storage bottle 6 that are fitted together. The cap 5 is fixed to the outer periphery of the bottle mouth connecting seat 3 by interference fit, and the liquid storage bottle 6 is engaged with the inner wall of the bottle mouth connecting seat 3.

[0064] The implementation principle of a capsule pump according to an embodiment of this application is as follows: The container uses a double connection structure to ensure tight connection of all components. The cap 5 effectively protects the exposed parts of the capsule pump, reducing liquid waste caused by accidental pressing, while also isolating external dust and impurities from contamination. The storage bottle 6 connects to the bottle mouth connector 3 via a snap-fit ​​connection, providing a stable supply of cosmetics to the pump. The overall assembly is stable and well-protected. The user presses the capsule pump, causing elastic deformation, to achieve precise quantitative dispensing. When the pump returns to its original position, it automatically draws liquid from the storage bottle 6, completing one "suction-discharge" cycle, ensuring smooth and uninterrupted liquid supply.

[0065] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A capsule pump, characterized in that, The system includes a capsule pump body (1) and a main protective shell (2). The capsule pump body (1) has a liquid supply channel (11) inside, and its upper and lower ends are respectively connected to a quantitative structure (4) for quantitative liquid dispensing and a bottle mouth connector (3) for connecting a storage bottle (6). The main protective shell (2) is fixedly sleeved on the outside of the capsule pump body (1) and detachably connected to the bottle mouth connector (3). Its top has a liquid dispensing terminal (22) that communicates with the quantitative structure (4). The side wall of the main protective shell (2) is movably embedded with a pressing member (21). When the pressing member (21) is pressed by an external force, the capsule pump body (1) can undergo elastic deformation and return to its initial shape.

2. The capsule pump according to claim 1, characterized in that, The capsule pump body (1) has a slender cylindrical shape with a slightly curved waist on the side. The bottom of the capsule pump body (1) is equipped with a flat disc base (13). The side wall of the disc base (13) is provided with an arc-shaped guide surface (132) and abuts against the inner wall of the main body protective shell (2). The top of the bottle mouth connector (3) is provided with a columnar liquid outlet interface (31) with a side hole (311). The middle of the disc base (13) is provided with a locking hole (131) that engages with the liquid outlet interface (31).

3. A capsule pump according to claim 2, characterized in that, The top of the capsule pump body (1) and the upper edge of the card hole (131) are integrally formed with two symmetrically arranged winglets (12) and mounting blocks (133); the winglets (12) are sheet-like structures with outward curvature, used to block the liquid inlet channel of the metering structure (4), and expand outward when the capsule pump body (1) is deformed by force; the mounting block (133) is a long arc-shaped groove structure, which transitions with the liquid outlet (31), and the edge of the groove has a limiting notch (134) that matches the side hole (311).

4. A capsule pump according to claim 1, characterized in that, The quantitative structure (4) is a replaceable modular component, including a fan-shaped chamber (42) with radial partitions at the top, a matching cylindrical cavity body (41), and a bottom snap-fit ​​structure (43) that snaps into the inner wall of the capsule pump body (1). The fan-shaped chamber (42) has a quantitative liquid outlet (421), which is connected to the liquid supply channel (11) and the liquid outlet terminal (22) respectively. It is used to cooperate with the air pressure drive action of the capsule pump body (1) to squeeze the cosmetic out of the fan-shaped chamber (42) with a fixed volume.

5. A capsule pump according to claim 4, characterized in that, The cross-sectional area of ​​the quantitative liquid outlet (421) can be adjusted by replacing different quantitative structures (4), and includes at least three different specifications.

6. A capsule pump according to claim 1, characterized in that, The capsule pump body (1) is made of medical-grade elastic material, and the surface of the metering structure (4) is covered with an antibacterial coating.

7. A capsule pump according to claim 1, characterized in that, The bottle mouth connector (3) adopts a stepped cylindrical structure, with a multi-layered stepped shape that gradually expands in diameter from the top liquid outlet end to the bottom bottle body connection end, and is compatible with the internal structure of the main protective shell (2).

8. A capsule pump according to claim 7, characterized in that, The inner wall of the bottle neck connector (3) forms a detachable sealed connection with the liquid storage bottle (6) through an annular snap-fit ​​groove (32) and an annular sealing adhesive layer (33).

9. A capsule pump according to claim 1, characterized in that, The liquid outlet terminal (22) is surrounded and fixed with a protective cover (23). The protective cover (23) and the liquid outlet terminal (22) are keyway-fitted and form a slender, gradually tapered truncated cone shape with the main protective shell (2). An auxiliary liquid outlet nozzle (24) is also filled between the liquid outlet terminal (22) and the protective cover (23). The auxiliary liquid outlet nozzle (24) has a rounded wrapping structure.

10. A capsule pump according to claim 9, characterized in that, The auxiliary liquid outlet (24) is provided with a liquid inlet (241) at an incline inside. The liquid inlet (241) is connected to the liquid outlet terminal (22), and its aperture is smaller than that of the liquid outlet terminal (22).

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