A pressurized capsule pump for a container

Abstract

The application relates to the field of liquid delivery, in particular to a pressing capsule pump of a container, which comprises a pressing structure and an elastic compression structure arranged in sequence from top to bottom, the elastic compression structure comprises a semicircular elastic piece and a positioning guide piece, the elastic piece and a bottom shell enclose a liquid accumulation cavity in communication with a liquid storage cavity, the elastic piece is provided with a plugging part and two positioning holes, the positioning guide piece comprises a guide block and two positioning protrusions, the guide block is provided with a liquid guide hole, the plugging part is plugged above the liquid guide hole, the two positioning protrusions are respectively sealed through the two positioning holes, the plugging part can be elastically deformed to form a liquid outlet gap between the liquid guide hole, the bottom of the pressing structure is in abutment with the top of the elastic piece, when pressing, foundation liquid flows out from the liquid storage cavity, the liquid accumulation cavity, the liquid guide hole and the liquid outlet gap in sequence. The product miniaturization and simplification requirements are met, the sealing performance is improved, the situation of easy leakage is effectively avoided, and the application scene of light and thin air cushion products can be applied.

Description

Technical Field

[0001] This application relates to the field of liquid delivery, and in particular to a press-type capsule pump for a container. Background Technology

[0002] In the cosmetics industry, with the continuous development of society and the economy, people's living standards have significantly improved, and their consumption concepts have undergone profound changes. Consumers' requirements for cosmetics are no longer limited to basic efficacy; they are increasingly concerned about ease of use, hygiene, and affordability. Cushion products, as a major innovation in the cosmetics industry, have attracted widespread attention in the market since their introduction. With their unique and novel design and extremely convenient application, they have successfully broken through the limitations of traditional liquid foundation, providing great convenience for the fast-paced lives of modern consumers.

[0003] Current cushion foundation products typically consist of a base shell, a cap, a liquid dispensing structure, and a replaceable reservoir. The replaceable reservoir is designed for easy replenishment, reducing operating costs. The dispensing structure is flip-up and positioned between the base shell and cap, increasing product flexibility and versatility. The replaceable reservoir is sealed at the bottom of the dispensing structure, specifically designed to supply foundation. It includes an air inlet valve to balance the internal pressure of the reservoir and external pressure, ensuring smooth foundation flow. The dispensing structure comprises, from top to bottom, a sponge layer, a vacuum pump, and a housing. The vacuum pump consists of a vacuum liner and a pump body. The vacuum liner, located within the replaceable reservoir, stores the foundation. The pump body comprises a piston, spring, one-way valve, and dispensing channel. When the user presses the pump body, force is transmitted through a specific path to the piston, causing it to move downwards, compressing the vacuum liner and expelling the foundation. As the internal air pressure increases, the one-way valve opens, allowing the foundation to flow smoothly into the sponge layer for the user to use.

[0004] However, existing vacuum press pumps have significant drawbacks in practical use. Their complex structure makes disassembly and cleaning cumbersome, and over long-term use, problems can arise in the fit between components, leading to jamming during use and leakage of foundation, thus affecting the user experience. Furthermore, the complex structure occupies a large space, resulting in bulky cushion products that are difficult to miniaturize, especially unsuitable for thin and light cushion applications, thus limiting further product development and market competitiveness. Summary of the Invention

[0005] To meet the needs of product miniaturization and simplification, reduce volume for easier cleaning, improve sealing performance, effectively prevent leakage, and make it suitable for applications of thin and light air cushion products, this application provides a press-type capsule pump for a container.

[0006] This application provides a press-type capsule pump for a container, comprising a press-type structure and an elastic compression structure arranged sequentially from top to bottom. The elastic compression structure includes a semi-arc-shaped elastic element and a positioning guide element. The elastic element is sealed and installed on the bottom shell of the liquid outlet structure. The elastic element and the bottom shell enclose a semi-arc-shaped liquid accumulation chamber communicating with a liquid storage chamber for replacing the liquid storage core. The elastic element has a sealing part in the middle and positioning holes located on both sides of the sealing part. The positioning guide element includes a guide block and two positioning protrusions disposed on the top of the guide block. The guide block has a through-hole communicating with the liquid accumulation chamber. Two positioning protrusions are symmetrically arranged on both sides of the liquid guiding hole, and a receiving groove is formed between them to accommodate the sealing part. The sealing part is located above the guide block and is used to seal the liquid guiding hole. The two positioning protrusions respectively seal and pass through the two positioning holes. The sealing part can undergo elastic deformation to form a liquid outlet gap with the liquid guiding hole. The bottom of the pressing structure abuts against the top of the elastic element and can transmit a downward force to the elastic element to compress the liquid accumulation chamber. When pressed, the foundation liquid flows out sequentially from the liquid storage chamber, the liquid accumulation chamber, the liquid guiding hole, and the liquid outlet gap.

[0007] By adopting the above technical solution, the pressing structure and the elastic compression structure are arranged sequentially, one above the other. When a downward force is applied to the pressing structure, this force can be transmitted to the elastic element. Since the elastic element is sealed and installed on the bottom shell of the liquid outlet structure, forming a semi-circular liquid accumulation cavity with the bottom shell, and this cavity is connected to the liquid storage cavity of the replacement liquid storage core, pressing the elastic element compresses the liquid accumulation cavity, increasing the internal pressure. Under pressure, the foundation liquid flows from the storage cavity into the liquid accumulation cavity. The sealing part in the middle of the elastic element originally blocks the liquid guide hole. As the liquid accumulation cavity of the elastic element is compressed, the foundation liquid flows from the storage cavity into the liquid accumulation cavity. Under pressure, the sealing part in the liquid accumulation cavity undergoes elastic deformation, forming an outlet gap with the liquid guide hole, allowing the foundation liquid to flow out sequentially through the liquid guide hole and the outlet gap. This structural design simplifies the pump's design, reducing the number of parts and complex mating relationships compared to traditional vacuum pumps. This lowers the difficulty of disassembly and cleaning, avoids jamming caused by component misalignment, effectively prevents leaks, and significantly improves the user experience. Simultaneously, the simplified structure reduces space occupancy, facilitating miniaturization of air cushion products and making them suitable for thin and lightweight applications, thus enhancing the product's market competitiveness.

[0008] Preferably, the bottom of the sealing part is provided with a convex arc surface extending downward, the convex arc surface matching the liquid guiding hole and being able to extend into the liquid guiding hole to achieve sealing.

[0009] By adopting the above technical solution, the downward-extending convex arc surface at the bottom of the sealing part matches the liquid guiding hole. When the pressing structure is not pressed, the convex arc surface will naturally extend into the liquid guiding hole under the elastic action of the elastic element. By utilizing the matching relationship between the two, the liquid guiding hole can be effectively sealed, preventing the foundation liquid from flowing out of the liquid guiding hole when not pressed, thus ensuring the sealing performance and use effect of the product.

[0010] Preferably, the elastic element has an abutment groove at its bottom, and the guide block has an abutment portion extending horizontally along its edge, with the top of the abutment portion abutting against the groove wall of the abutment groove.

[0011] By adopting the above technical solution, an abutment groove is provided at the bottom of the elastic component, and an abutment part is provided on the horizontally extended edge of the guide block. When the two are assembled, the top of the abutment part will abut against the groove wall of the abutment groove. This abutment fit can play a positioning role for the elastic component and the guide block, ensuring the accuracy of their relative positions and avoiding misalignment or shaking during use. This ensures the stability and reliability of the overall structure of the press capsule pump, allowing the foundation liquid to flow out stably and smoothly from the liquid storage chamber, liquid accumulation chamber, liquid guide hole, and liquid outlet gap in sequence.

[0012] Preferably, the sealing portion has horizontally extending arc-shaped extension portions on both sides, and the two positioning holes are arc-shaped positioning holes. The arc-shaped extension portions and the arc-shaped positioning holes share a single arc-shaped guide surface.

[0013] By adopting the above technical solution, since the sealing part is horizontally extended with arc-shaped extensions on both sides, and the positioning holes are arc-shaped positioning holes, and the two share a common arc-shaped guide surface, the arc-shaped guide surface can provide smooth guidance for the elastic deformation of the sealing part when the elastic element is subjected to force. This makes the process of forming a liquid outlet gap between the sealing part and the liquid guiding hole more stable and smooth, thereby ensuring that the foundation liquid can flow out more stably and smoothly from the liquid storage chamber, liquid accumulation chamber, liquid guiding hole, and liquid outlet gap in sequence.

[0014] Preferably, the pressing structure is provided with mounting holes, and the two positioning protrusions can pass through the mounting holes.

[0015] By adopting the above technical solution, since the pressing structure is provided with mounting holes and the two positioning protrusions can pass through these mounting holes, a stable connection can be established between the positioning guide and the pressing structure. During the pressing operation, the external force on the pressing structure can be accurately and effectively transmitted to the elastic element through the cooperation of the mounting holes and the positioning protrusions, thereby achieving compression of the liquid accumulation cavity.

[0016] Preferably, the outer walls of the two positioning protrusions are provided with arc-shaped grooves, and the hole wall of the pressing structure is provided with an annular protrusion, and the annular protrusion is embedded in the two arc-shaped grooves.

[0017] By adopting the above technical solution, arc-shaped grooves are provided on the outer walls of the two positioning protrusions, and annular protrusions are provided on the walls of the pressing structure holes, with the annular protrusions embedded in the arc-shaped grooves. This arrangement creates a stable connection between the pressing structure and the positioning guide. When the pressing structure is pressed, the annular protrusions play a positioning and guiding role within the arc-shaped grooves, ensuring that while the pressing structure presses the elastic element, it simultaneously transmits the downward force to the positioning protrusions and guide blocks, maintaining a stable sealing effect between the sealing part and the liquid guiding hole. Simultaneously, this connection method enhances the tightness of the fit between the pressing structure and the positioning guide, preventing shaking or displacement during pressing and avoiding leakage of foundation liquid.

[0018] Preferably, a reinforcing block extends upward from the center of the elastic element, the reinforcing block is provided with the sealing part and the positioning hole, and a wrapping part for wrapping the reinforcing block extends downward from the bottom of the pressing structure.

[0019] By adopting the above technical solution, a reinforcing block is provided extending upward from the middle of the elastic element. The reinforcing block is provided with a sealing part and a positioning hole. A wrapping part for wrapping the reinforcing block is provided extending downward from the bottom of the pressing structure. When the pressing structure transmits downward force, the wrapping part can tightly wrap the reinforcing block, so that the force is more concentrated and stably transmitted to the elastic element, avoiding the dispersion of force. This more effectively compresses the liquid accumulation chamber, ensuring that the foundation liquid can flow out smoothly from the liquid storage chamber, liquid accumulation chamber, liquid guide hole, and liquid outlet gap in sequence. At the same time, the reinforcing block also enhances the structural strength of the middle of the elastic element, reduces the deformation of the elastic element during long-term use, and improves the service life and stability of the press capsule pump.

[0020] Preferably, the elastic element has a reinforced edge extending from its edge.

[0021] By adopting the above technical solution, a reinforced edge is provided on the edge of the elastic element. The reinforced edge can enhance the structural strength of the edge of the elastic element. When the elastic element undergoes elastic deformation due to the force transmitted by the pressing structure, the reinforced edge can effectively prevent the edge of the elastic element from deforming or being damaged, ensuring the sealing effect between the elastic element and the bottom shell of the liquid outlet structure, thereby ensuring the sealing of the liquid accumulation chamber, so that the foundation liquid can flow out smoothly from the liquid storage chamber, liquid accumulation chamber, liquid guide hole, and liquid outlet gap in sequence during the pressing process.

[0022] Preferably, the reinforced edge extends horizontally and is provided with an abutting edge that allows external parts to be pressed against it.

[0023] By adopting the above technical solution, the reinforced edge is horizontally extended with an abutting edge. When the external parts are pressed against the abutting edge, the contact area and connection stability between the elastic element and the external parts are increased, thereby improving the installation stability of the elastic element in the entire press capsule pump structure. This ensures that the elastic element will not easily shake or shift during the use of the press capsule pump, allowing the foundation liquid to flow out stably from the reservoir, accumulation chamber, guide hole, and outlet gap in sequence, thus ensuring the normal operation of the press capsule pump.

[0024] Preferably, the elastic element is integrally injection molded from silicone rubber.

[0025] By adopting the above technical solution, due to the excellent elasticity, aging resistance, chemical stability, and sealing properties of silicone rubber, the elastic parts are manufactured by integral injection molding of silicone rubber material. During the integral injection molding process, the integrity and continuity of the overall structure of the elastic parts can be guaranteed, reducing problems such as poor sealing or structural instability that may occur during assembly. This not only allows the elastic parts to adapt well to the compression and rebound process, ensuring that the pressing force can be effectively transmitted to squeeze out the foundation liquid, but also ensures a good seal of the liquid accumulation cavity to prevent foundation liquid leakage. It also has a long service life and can withstand long-term use and environmental changes.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. This application combines a pressing structure and an elastic compression structure. The elastic compression structure consists of a semi-circular elastic element and a positioning guide element. When the pressing structure is pressed, its bottom abuts against the top of the elastic element, transmitting a downward force to the elastic element and compressing the liquid accumulation chamber. This allows the foundation liquid to flow out sequentially from the storage chamber, the liquid accumulation chamber, the guide hole, and the outlet gap, ensuring smooth flow of the foundation liquid. Compared to the complex piston, spring, and one-way valve structure of existing vacuum pressing pumps, this design reduces the number of parts and simplifies the structure. The fewer parts reduce the number of mating links between components, avoiding problems caused by complex structures and thus solving the problems of jamming during use and easy leakage of foundation liquid, improving the user experience. 2. Due to the simple structure of the elastic element and the positioning guide element, compared with the existing complex structure, it requires less space, reduces the space occupied, meets the miniaturization requirements of air cushion products, and is suitable for application scenarios of thin and light air cushion products. Attached Figure Description

[0027] Figure 1 This is an exploded view of the capsule pump of the container in this application; Figure 2 This is a structural diagram of the elastic compression structure of the press-type capsule pump of the container in this application; Figure 3 This is a bottom structural diagram of the elastic compression structure of the press capsule pump of the container in this application; Figure 4 This is a top structural diagram of the elastic compression structure of the press capsule pump of the container in this application; Figure 5 This is an exploded view of the capsule pump of the container in this application, along with a matching liquid dispensing structure and a replacement liquid reservoir. Figure 6 This is a diagram of the liquid guide plate structure of the liquid outlet structure matched with the pressure capsule pump of the container in this application; Figure 7 This is a product structure diagram of the press-type capsule pump of the container in this application, the matching liquid dispensing structure, and the replacement liquid reservoir core; Figure 8 yes Figure 7 AA cross-section view.

[0028] Explanation of reference numerals in the attached drawings: 1. Pressing structure; 2. Elastic compression structure; 11. Mounting hole; 12. Annular protrusion; 13. Wrapping part; 14. Guide post; 21. Elastic element; 22. Positioning guide element; 23. Liquid accumulation cavity; 211. Sealing part; 212. Positioning hole; 213. Convex arc surface; 214. Arc-shaped extension; 215. Abutment groove; 216. Reinforced edge; 217. Abutment edge; 218. Reinforcing element Block; 221, guide block; 222, positioning protrusion; 223, liquid guide hole; 224, abutment part; 225, receiving groove; 226, arc-shaped groove; a, liquid outlet structure; b, replacement liquid storage core; a1, sponge layer; a2, liquid guide plate; a3, bottom shell; a4, clamping ring; a21, liquid guide groove; a22, liquid outlet hole; a23, small hole; a31, liquid flow channel; a32, valve; b1, liquid storage chamber. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0030] This application provides an embodiment of a capsule pump for a container, referring to... Figure 1 and Figure 2 The device includes a pressing structure 1 and an elastic compression structure 2 arranged sequentially from top to bottom. The bottom of the pressing structure 1 abuts against the top of the elastic compression structure 2. The pressing structure 1 can transmit the downward force to the elastic compression structure 2, thereby compressing the liquid accumulation cavity 23 formed between the elastic compression structure 2 and the bottom shell a3 of the liquid outlet structure a. This allows the foundation liquid to flow from the liquid storage cavity b1 to the liquid accumulation cavity 23 and then flow out smoothly after continuous pressing. This combination makes the operation simple and convenient, and the structure is relatively simple, solving the problems of complex structure, troublesome disassembly and cleaning, and easy leakage of foundation liquid in existing vacuum pressing pumps.

[0031] Specifically, the elastic compression structure 2 in this embodiment consists of a semi-arc-shaped elastic element 21 and a positioning guide element 22. The elastic element 21 is sealed and installed on the bottom shell a3 of the liquid outlet structure a, and the elastic element 21 and the bottom shell a3 together form a semi-arc-shaped liquid accumulation cavity 23 that communicates with the liquid storage cavity b1 of the replacement liquid storage core b. The elastic element 21 can be integrally molded from a material with certain elasticity and flexibility. In this embodiment, silicone rubber is selected, and the elastic element 21 is integrally injection molded from silicone rubber. This material has good elasticity and sealing properties, effectively ensuring the sealing effect of the liquid accumulation cavity 23. Of course, other embodiments can also use other rubber materials with similar properties.

[0032] Reference Figure 1 and Figure 2 Specifically, the elastic element 21 is provided with a sealing part 211, a positioning hole 212, a convex arc surface 213, an arc-shaped extension part 214, an abutment groove 215, a reinforcing edge 216, an abutment edge 217, and a reinforcing block 218. The reinforcing block 218 extends upward from the middle of the elastic element 21, and the sealing part 211 and the positioning hole 212 are located at the position of the reinforcing block 218. The two positioning holes 212 are respectively located on both sides of the sealing part 211. The bottom of the sealing part 211 extends downward with a convex arc surface 213, which matches the liquid guiding hole 223 of the pressing structure 1 mentioned below and can extend into the liquid guiding hole 223 to achieve a seal. This design of the convex arc surface 213 allows for better cooperation with the liquid guiding hole 223, improving the sealing effect. The sealing part 211 has horizontally extending arc-shaped extensions 214 on both sides, and the two positioning holes 212 are arc-shaped positioning holes. The arc-shaped extensions 214 and the arc-shaped positioning holes share an arc-shaped guide surface. This design allows the sealing part 211 to deform upwards better when the elastic element 21 is subjected to force, and the foundation liquid can flow more smoothly along the arc-shaped guide surface. The bottom of the elastic element 21 has an abutment groove 215, and the edge of the elastic element 21 has a reinforcing edge 216 extending horizontally. The reinforcing edge 216 has a horizontally extending abutment edge 217 for external parts to abut against. The reinforcing edge 216 and the abutment edge 217 enhance the structural strength and stability of the elastic element 21, while the abutment edge 217 facilitates installation with external parts.

[0033] Reference Figure 3 and Figure 4The positioning guide 22 comprises a guide block 221, positioning protrusions 222, a liquid guiding hole 223, an abutment portion 224, a receiving groove 225, and an arc-shaped groove 226. Two positioning protrusions 222 are symmetrically arranged on the top of the guide block 221, and a liquid guiding hole 223 communicating with the liquid accumulation chamber 23 is provided through the middle of the guide block 221. An abutment portion 224 extends horizontally along the edge of the guide block 221, located below the elastic member 21. Its top abuts against the wall of the abutment groove 215 of the elastic member 21. This fit makes the connection between the positioning guide 22 and the elastic member 21 more stable. Two positioning protrusions 222 are symmetrically arranged on both sides of the liquid guiding hole 223, forming a receiving groove 225 between them to accommodate the sealing part 211. The sealing part 211 is located above the guide block 221 and is used to seal the liquid guiding hole 223. The two positioning protrusions 222 respectively seal through the two positioning holes 212. The positioning protrusions 222 can be made of a material with good sealing performance with the elastic element 21, ensuring positioning while preventing leakage of foundation liquid. After being subjected to a certain impact, the sealing part 211 can undergo elastic deformation, so that a liquid outlet gap is formed between the sealing part 211 and the liquid guiding hole 223. When the foundation liquid in the liquid accumulation chamber 23 impacts the elastic element 21 to a certain extent, the sealing part 211 is deformed by force, thereby opening the liquid outlet gap, allowing the foundation liquid to flow out from the liquid guiding hole 223 and the liquid outlet gap.

[0034] The combination logic of the elastic element 21 and the positioning guide element 22 in this embodiment is as follows: the positioning guide element 22 cooperates with the positioning hole 212 of the elastic element 21 through the positioning protrusion 222, so as to achieve accurate installation and positioning of the two. At the same time, the liquid guiding hole 223 of the guide block 221 provides a channel for the outflow of foundation liquid. The sealing part 211 seals the liquid guiding hole 223. When the elastic element 21 is subjected to force, the liquid accumulation cavity 23 is compressed to form a negative pressure, so that the foundation liquid can flow from the liquid storage cavity b1 to the liquid accumulation cavity 23 until the foundation liquid fills the entire liquid accumulation cavity 23. If the elastic element 21 is pressed again, the foundation liquid in the liquid accumulation cavity 23 impacts the sealing part 211 upward, thereby creating an outlet gap between the sealing part 211 and the liquid guiding hole 223. Finally, the foundation liquid can flow out smoothly from the outlet gap. This combination method ensures the smoothness and sealing of the foundation liquid delivery.

[0035] Reference Figure 3 and Figure 4Specifically, in this embodiment, the pressing structure 1 is a disc-shaped structure. The pressing structure 1 is provided with mounting holes 11 through which two positioning protrusions 222 can pass. The outer walls of the two positioning protrusions 222 are provided with arc-shaped grooves 226. The hole wall of the pressing structure 1 is provided with an annular protrusion 12, which is embedded in the two arc-shaped grooves 226. The bottom of the pressing structure 1 extends downward to provide a wrapping part 13 for wrapping the reinforcing block 218. The setting of the wrapping part 13 makes the contact between the pressing structure 1 and the elastic member 21 more compact. This cooperation method makes the connection between the pressing structure 1 and the positioning guide member 22 more compact and can ensure that the pressing structure 1 accurately transmits the force to the elastic member 21, which is convenient for the user to press.

[0036] The combination logic of the pressing structure 1 and the elastic compression structure 2 is that the pressing structure 1 and the elastic compression structure 2 are connected through the cooperation of the positioning protrusion 222 and the mounting hole 11, and the cooperation of the wrapping part 13 and the reinforcing block 218. When the user presses the pressing structure 1, the pressing structure 1 transmits the downward force to the elastic element 21, causing the elastic element 21 to deform and compress the liquid accumulation chamber 23. The internal pressure increases, causing the foundation liquid to flow out sequentially from the liquid storage chamber b1, the liquid accumulation chamber 23, the liquid guiding hole 223, and the liquid outlet gap. This combination method achieves convenient delivery of foundation liquid, has a simple structure, and solves the problems existing in the prior art.

[0037] Specifically, refer to Figure 5-8In this embodiment, the press-type capsule pump is installed inside the liquid outlet structure a. This liquid outlet structure a consists of a sponge layer a1, a liquid guide plate a2, a press-type capsule pump, a bottom shell a3, and a retaining ring a4 from top to bottom. The sponge layer a1 is used to absorb foundation liquid, making it convenient for users to press the sponge layer a1 with a powder puff to pick up the foundation liquid. The liquid guide plate a2 is located above the press-type structure 1. The side of the liquid guide plate a2 near the press-type structure 1 is provided with a liquid guide groove a21 and a liquid outlet hole a22. The liquid guide plate a2 is provided with four small holes a23. The top of the press-type structure 1 is provided with a guide post 14 that extends into the small holes a23. The cooperation between the guide post 14 and the small holes a23 helps to improve the stability of pressing. The sponge layer a1 is located above the liquid guide plate a2. When the foundation liquid flows out from the liquid outlet gap, the foundation liquid flows along the liquid guide groove a21 to the liquid outlet hole a22 and flows out from the liquid outlet hole a22, so that the sponge layer a1 can absorb the foundation liquid. The bottom of the base shell a3 is detachably and sealed to the replacement liquid reservoir b. The bottom of the base shell a3 also has a sealing tube that extends into the liquid reservoir b1 of the replacement liquid reservoir b. The tube has a liquid flow channel a31, and a valve a32 is located above the liquid flow channel a31. The valve a32 opens the passage between the liquid flow channel a31 and the liquid reservoir 23 based on the compression of the liquid accumulation chamber 23. The liquid flow channel a31 is continuously connected to the liquid reservoir b1. When the elastic element 21 is pressed, the liquid accumulation chamber 23 is compressed, creating a negative pressure. The valve a32 opens, allowing the foundation liquid to flow from the liquid reservoir b1 along the liquid flow channel a31 to the liquid accumulation chamber 23, and then sequentially through the liquid outlet gap, the liquid guide groove a21, and the liquid outlet hole a22 before flowing out. Furthermore, a retaining ring a4 is abutted against the abutting edge 217 of the elastic element 21 and the base shell a3.

[0038] The implementation principle of this embodiment is as follows: The press-type capsule pump in this embodiment simplifies the complex structure of traditional vacuum press-type pumps through the cooperation of the press-type structure 1 and the elastic compression structure 2. The elastic element 21 is integrally molded from materials such as silicone rubber, which has good elasticity and sealing performance, and its structure is relatively simple, making it easy to disassemble and clean. The cooperation between the positioning guide element 22 and the elastic element 21 ensures the accuracy and sealing of the foundation liquid delivery. The connection method between the press-type structure 1 and the elastic compression structure 2 makes operation more convenient, and the overall size is small, which can meet the needs of miniaturization, especially suitable for thin cushion products, improving the user experience and market competitiveness of the product.

[0039] 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 for a container, characterized in that, The device includes a pressing structure (1) and an elastic compression structure (2) arranged sequentially from top to bottom. The elastic compression structure (2) includes a semi-arc-shaped elastic element (21) and a positioning guide (22). The elastic element (21) is sealed and installed on the bottom shell (a3) ​​of the liquid outlet structure (a). The elastic element (21) and the bottom shell (a3) ​​enclose a semi-arc-shaped liquid accumulation chamber (23) that communicates with the liquid storage chamber (b1) of the replacement liquid storage core (b). The elastic element (21) has a sealing part (211) in the middle and positioning holes (212) on both sides of the sealing part (211). The positioning guide (22) includes a guide block (221) and two positioning protrusions (222) on the top of the guide block (221). The guide block (221) has a liquid guiding hole (223) that communicates with the liquid accumulation chamber (23). Two positioning protrusions (222) are symmetrically arranged on both sides of the liquid guiding hole (223) and a receiving groove (225) is formed between them to accommodate the sealing part (211). The sealing part (211) is located above the guide block (221) and is used to seal the liquid guiding hole (223). The two positioning protrusions (222) respectively seal through the two positioning holes (212). The sealing part (211) can undergo elastic deformation and form a liquid outlet gap with the liquid guiding hole (223). The bottom of the pressing structure (1) abuts against the top of the elastic element (21) and can transmit a downward force to the elastic element (21) to compress the liquid accumulation chamber (23). When pressing, the foundation liquid flows out sequentially from the liquid storage chamber (b1), the liquid accumulation chamber (23), the liquid guiding hole (223), and the liquid outlet gap.

2. The capsule pump for the container according to claim 1, characterized in that, The bottom of the sealing part (211) is provided with a convex arc surface (213), which matches the liquid guiding hole (223) and can be inserted into the liquid guiding hole (223) to achieve sealing.

3. The capsule pump for the container according to claim 1, characterized in that, The elastic member (21) has an abutment groove (215) at its bottom, and the guide block (221) has an abutment part (224) extending horizontally along its edge. The top of the abutment part (224) abuts against the groove wall of the abutment groove (215).

4. The capsule pump for the container according to claim 1, characterized in that, The sealing part (211) has horizontally extended arc-shaped extensions (214) on both sides, and the two positioning holes (212) are arc-shaped positioning holes. The arc-shaped extensions (214) and the arc-shaped positioning holes share an arc-shaped guide surface.

5. The capsule pump for the container according to claim 1, characterized in that, The pressing structure (1) is provided with a mounting hole (11), and the two positioning protrusions (222) can pass through the mounting hole (11).

6. The capsule pump for the container according to claim 5, characterized in that, The outer walls of the two positioning protrusions (222) are provided with arc-shaped grooves (226), and the hole wall of the pressing structure (1) is provided with an annular protrusion (12), and the annular protrusion (12) is embedded in the two arc-shaped grooves (226).

7. The capsule pump for the container according to claim 1, characterized in that, The elastic member (21) has a reinforcing block (218) extending upward from the middle. The reinforcing block (218) has the sealing part (211) and the positioning hole (212). The bottom of the pressing structure (1) has a wrapping part (13) extending downward for wrapping the reinforcing block (218).

8. The capsule pump for the container according to claim 1, characterized in that, The elastic element (21) has a reinforced edge (216) extending from its edge.

9. The capsule pump for the container according to claim 1, characterized in that, The reinforced edge (216) extends horizontally and is provided with an abutment edge (217) for external parts to abut against.

10. The capsule pump for the container according to claim 1, characterized in that, The elastic element (21) is made of silicone rubber through integral injection molding.

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