Spring-free pump core structure and cosmetic container comprising same

Abstract

The invention discloses a spring-free pump core structure and a cosmetic container comprising the spring-free pump core structure, and the spring-free pump core structure comprises an inner mounting seat and an outer mounting seat, the inner connecting seat is mounted above the inner mounting seat, and a liquid through hole is formed in the upper end of the inner connecting seat; the inner connecting sleeve is fixed above the inner connecting seat; the valve body is arranged in the inner connecting seat, the upper end of the valve body is arranged in the liquid through hole in a penetrating mode, and the liquid through hole can be opened and closed through vertical movement of the valve body; the lower end of the valve body can be vertically movably inserted into the connecting pipeline; a liquid passing channel which can be opened and closed through the up-down movement of the valve body is formed in the inner mounting seat; and the inner cover is arranged in the inner connecting sleeve in an up-down moving manner. According to the invention, revolutionary improvements are brought to the aspects of safety, reliability, durability, production efficiency, cost control and environmental protection sustainability while the core performances such as the displacement, the sealing property and the hand feeling of the pump core are guaranteed, and the pump core has remarkable market competitive advantages and application prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of pump bodies, and in particular relates to a springless pump core structure and a cosmetic container containing the same. Background Art

[0002] In the cosmetics, skincare, and personal care sectors, pump bottles are widely used for their ease of use, controlled dosage, and excellent hygiene. The core component of these pump bottles is the pump element, which generates negative pressure through a press, drawing the contents from the container and dispensing them through a nozzle. Currently, the mainstream pump element design on the market generally features an internal metal spring. When the user presses the pump head, the spring is compressed and stores energy. When the pressure is released, the spring returns to its original position and expands, driving the piston back to its original position, completing the aspiration cycle and preparing for the next press.

[0003] However, this traditional pump core structure with built-in metal spring has the following disadvantages: 1. Spring corrosion and contamination risk: Metal springs exposed to direct, prolonged contact with contents (especially aqueous solutions, emulsions, or formulations containing electrolytes or active ingredients) are at risk of corrosion and rust. Corrosion products may be mixed into the contents, causing product contamination, discoloration, and deterioration, impacting product safety and consumer experience, and posing a potential threat to brand reputation.

[0004] 2. Spring fatigue failure: Repeated compression-rebound cycles inevitably lead to metal fatigue, which can weaken the spring's elasticity, reduce its rebound force, and even cause it to break. This can directly lead to a poor pump feel (such as sticking, no rebound, or weak rebound), unstable displacement, and ultimately, pump failure, rendering the product inoperable.

[0005] 3. Material compatibility and recycling challenges: The metal spring and the pump core (typically made of plastics such as PP, PE, and PET) are heterogeneous materials. This heterogeneous combination significantly increases the difficulty and cost of sorting and separating the materials during end-of-life recycling. This is inconsistent with increasingly stringent environmental regulations and the concept of sustainable green design. Pump cores containing metal springs are often considered non-recyclable or difficult to recycle.

[0006] 4. Potential Leakage Points: The spring cavity requires a sealed design to prevent the contents from seeping in or air from entering and affecting the vacuum level. The irregular shape of the spring itself and its long-term movement may place additional strain on the sealing structure, increasing the potential risk of leakage.

[0007] Therefore, a springless pump core structure and a cosmetic container comprising the same are designed to solve the above problems.

[0008] It should be noted that the above technical background is merely provided to provide a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. Simply because these solutions are described in the technical background section of the present invention, it should not be assumed that the above technical solutions are well known to those skilled in the art. Summary of the Invention

[0009] In order to overcome the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a springless pump core structure and a cosmetic container comprising the same.

[0010] To achieve the above and other related purposes, the present invention provides a springless pump core structure, comprising: An inner mounting seat, wherein a connecting pipe is provided in the middle of the inner mounting seat; An inner connecting seat, the inner connecting seat is installed above the inner mounting seat, and a liquid hole is opened at the upper end of the inner connecting seat; An inner connecting sleeve, the inner connecting sleeve being fixed above the inner connecting seat; A valve body is disposed inside the inner connecting seat, the upper end of the valve body being inserted into the liquid through hole, the liquid through hole being configured to be opened and closed by the up and down movement of the valve body; the lower end of the valve body being configured to be movable up and down and inserted into the connecting pipe; the inner mounting seat is provided with a liquid passage that can be opened and closed by the up and down movement of the valve body; An inner cover, the inner cover being movably disposed up and down inside the inner connecting sleeve; in an initial state, the upper and lower parts of the inner cover are not connected, and the inner cover is configured to be lifted up by the valve body and achieve communication between the upper and lower parts; When the inner connecting sleeve is at the lowest position, the valve body moves upward relatively, the liquid passage is closed, the upper portion of the liquid hole is open, the inner connecting seat is in communication with the inner connecting sleeve, and the upper portion of the inner cover is open; When the inner connecting sleeve is in the initial position, the valve body is in the initial position, the liquid passage is open, the top of the liquid hole is closed, the inner connecting seat is not connected to the inner connecting sleeve, and the top of the inner cover is closed.

[0011] Furthermore, a truncated cone-shaped mounting platform is provided in the middle of the inner mounting seat, the liquid passage is a hollow structure and is opened on the mounting platform, and the connecting pipe is provided in the middle of the hollow structure; a block is provided on the inner wall of the connecting pipe, and a plurality of retaining edges higher than its upper end surface are provided on the outer periphery of the mounting platform; an annular liquid groove is provided on the radial outer side of the mounting platform, and an annular mounting groove is provided on the radial outer side of the annular liquid groove.

[0012] Furthermore, the inner connecting seat is a circular cover structure, the lower end of which is embedded in the annular mounting groove; the upper end of the valve body has a diameter greater than the diameter of the liquid passage. In this embodiment, the upper end of the inner connecting seat can elastically deform when subjected to downward pressure and return to its original shape when no force is applied. The inner connecting seat with a circular cover structure can form a liquid storage chamber between it and the inner mounting seat.

[0013] Furthermore, the liquid hole is provided with an upward flange, the flange is located in the inner connecting sleeve, and the flange is arranged to abut against the valve body. In the initial state, the head of the upper end of the valve body can be hung on the flange, and the flange can play a supporting and limiting role.

[0014] Furthermore, the upper end of the inner connecting sleeve is provided with a plurality of notches, a circular funnel opening is provided below the notches, a limit strip is provided on the inner side of the upper end of the inner connecting sleeve, and the lower end of the inner connecting sleeve is fixed around the liquid through hole, and the center line of the liquid through hole is arranged to coincide with the center line of the inner connecting sleeve. In this embodiment, the inner connecting sleeve and the inner connecting seat can be provided as an integral unit.

[0015] Furthermore, a baffle is provided in the middle of the valve body, arched upward to cover the liquid passageway. The baffle is positioned on the inner side of the retaining edge. A movable groove is defined along the circumference of the lower end of the valve body, and the baffle is positioned within the groove. In this embodiment, the width of the movable groove is greater than the height of the baffle. The valve body has a certain range of vertical movement, and the height of the baffle arched upward is set to correspond to the height of the movable range.

[0016] Furthermore, the upper end of the inner cover is provided with a bell-shaped opening that matches the shape of the funnel opening, and the funnel opening is arranged to abut against the bell-shaped opening; the lower end of the inner cover is provided with a circle of support columns along its circumference; when the valve body moves upward, the support columns are evenly distributed around it, and the lower ends of the support columns are clamped on the outside of the flange. In this embodiment, the flange is arranged within the inner connecting sleeve and is turned upward. The flange and the inner wall of the inner connecting sleeve form a circle of grooves. When the valve body moves upward, the support columns can be clamped into the grooves, and the head of the valve body enters the inner side of the support columns, lifting the inner cover.

[0017] Furthermore, the pump core structure is made of plastic. In this solution, the excellent fatigue resistance of the plastic material can ensure that the pump core remains stable during long-term and high-frequency use.

[0018] The present invention also provides a cosmetic container, comprising the springless pump core structure of any one of the above technical solutions, and further comprising a docking sleeve and a pressing head, wherein the docking sleeve is arranged on the outside of the pump core structure, and the pressing head is arranged above the pump core structure; the pressing head comprises an outer sleeve and an inner sleeve connected to the liquid outlet, the lower end of the outer sleeve is connected to the upper end of the docking sleeve, and the lower end of the inner sleeve is arranged on the inner connecting sleeve.

[0019] Furthermore, the bottle body and the bottle cap are provided with an upper and a lower latching seat inside the bottle body, the upper latching seat being detachably disposed below the docking sleeve, and the lower latching seat being disposed at the bottom of the bottle body; the outer wall of the docking sleeve is provided with a clamping edge, the bottle cap is disposed above the clamping edge and is clamped to the docking sleeve, and the bottle body is disposed below the clamping edge and is screwed to the docking sleeve. In this embodiment, the bottle cap is clamped to the docking sleeve and can be removed from the docking sleeve when it is needed to be opened; the bottle body is screwed to the docking sleeve, and the two can be screwed together using a threaded connection, so that they can be opened by rotation.

[0020] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. Completely eliminate the risk of spring corrosion contamination: Since metal springs are completely abandoned, all pump core components are made of food-grade / cosmetic-grade plastics with good compatibility (such as PP, PE, LDPE, HDPE, PET, etc.), fundamentally eliminating the possibility of metal corrosion contamination of contents, significantly improving the product's hygiene safety and long-term storage stability, and ensuring consumer safety and brand image.

[0021] 2. Excellent durability and reliability: The elastic deformation characteristics of the specially designed plastic components achieve a rebound function. The excellent fatigue resistance of the plastic material ensures that the pump core maintains a stable and consistent pressing feel and displacement during long-term, high-frequency use. This effectively overcomes the fatigue failure problem of metal springs and significantly extends the service life and reliability of the pump core.

[0022] 3. Excellent environmental friendliness and recyclability: The entire pump core is made of a single or highly compatible plastic of the same type. This material uniformity allows for easy recycling of the pump core after product disposal, eliminating the need for complex metal separation steps. This fully complies with the design requirements of a circular economy and green packaging, reducing environmental burdens.

[0023] 4. Reduce potential leak points and improve sealing: The simplified internal chamber structure avoids interference with the seal caused by the irregular shape of the spring. The all-plastic structure allows for the design of more optimized and reliable sealing paths (such as: one-piece molding structure), reducing the risk of leakage and improving the sealing performance and airtightness of the pump core.

[0024] 5. Quieter operating experience: Eliminates the "squeaking" noise that may be generated by the metal spring during compression and rebound, providing a quieter and more comfortable pressing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the pump core structure of the present invention; Figure 2 It is a schematic cross-sectional view of the pump core structure of the present invention; Figure 3 This is a schematic diagram of the inner mounting seat structure of the present invention; Figure 4 This is a schematic diagram of the internal connecting seat structure of the present invention; Figure 5 This is a schematic diagram of the inner connecting sleeve structure of the present invention; Figure 6 This is a schematic diagram of the valve body structure of the present invention; Figure 7 This is a schematic diagram of the inner cover structure of the present invention; Figure 8 This is a schematic diagram of a partial structural cross-section of embodiment 2 of the present invention; Figure 9 Schematic diagram of the pressing head structure of the present invention; Figure 10 This is a schematic cross-sectional view of a second embodiment of the present invention; In the above figures, 1. Inner mounting seat; 101. Connecting pipe; 102. Liquid passage; 103. Mounting platform; 104. Stopper; 105. Retaining edge; 106. Annular liquid tank; 107. Annular mounting groove; 2. Internal connection seat; 201. Liquid hole; 202. Flanged edge; 3. Internal connecting sleeve; 301. Notch; 302. Funnel mouth; 303. Limiting strip; 4. Valve body; 401. Stop plate; 402. Movable groove; 5. Inner cover; 501. Bell mouth; 502. Support column; 6. Docking sleeve; 601. Card edge; 7. Pressing head; 701. Outer sleeve; 702. Inner sleeve; 8. Bottle body; 9. Upper deck; 10. Lower deck; 11. Bottle cap. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] It should be noted that in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0030] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0031] Example 1: This embodiment provides a springless pump core structure, see attached Figure 1 and attached Figure 2 As shown, the pump core structure is made of plastic and includes: Inner mounting seat 1, see attached Figure 3As shown, a connecting pipe 101 is provided in the middle of the inner mounting seat 1; a truncated cone-shaped mounting platform 103 is provided in the middle of the inner mounting seat 1, the liquid passage 102 is a hollow structure and is opened on the mounting platform 103, and the connecting pipe 101 is provided in the middle of the hollow structure; a stopper 104 is provided on the inner wall of the connecting pipe 101 (the stopper 104 is used to limit the lower end of the valve body 4 and can also be provided in a circle), and a plurality of retaining edges 105 higher than its upper end surface are provided at the outer periphery of the mounting platform 103; an annular liquid groove 106 is provided on the radial outer side of the mounting platform 103, and an annular mounting groove 107 is provided on the radial outer side of the annular liquid groove 106.

[0032] Internal connector 2, see attached Figure 4 As shown, the inner connecting seat 2 is installed above the inner mounting seat 1, and a liquid hole 201 is provided at the upper end of the inner connecting seat 2; the inner connecting seat 2 is a circular cover structure, and the lower end of the inner connecting seat 2 is embedded in the annular mounting groove 107; the upper end diameter of the valve body 4 is larger than the diameter of the liquid hole 201. When the upper end of the inner connecting seat 2 is subjected to downward pressure, it can undergo elastic deformation, and return to its original shape when no force is applied. The inner connecting seat 2 of the circular cover structure can form a liquid storage chamber between the inner mounting seat 1. The liquid hole 201 is provided with an upward flange 202, which is located in the inner connecting sleeve 3 and is in contact with the valve body 4. In the initial state, the head of the upper end of the valve body 4 can be hung on the flange 202, and the flange 202 can play a supporting and limiting role.

[0033] Inner connecting sleeve 3, see attached Figure 5 As shown, the inner connecting sleeve 3 is fixed above the inner connecting base 2; the upper end of the inner connecting sleeve 3 is provided with a plurality of notches 301, and a circular funnel 302 is provided below the notches 301. A limit strip 303 is provided on the inner side of the upper end of the inner connecting sleeve 3. The lower end of the inner connecting sleeve 3 is fixed around the liquid through hole 201, and the center line of the liquid through hole 201 coincides with the center line of the inner connecting sleeve 3. The inner connecting sleeve 3 and the inner connecting base 2 can be provided as an integral unit.

[0034] Valve body 4, see attached Figure 6As shown, the valve body 4 is disposed within the inner connecting seat 2. The upper end of the valve body 4 is inserted into the liquid passage hole 201, which is configured to open and close by the up and down movement of the valve body 4. The lower end of the valve body 4 is inserted into the connecting pipe 101 and can be moved up and down. The inner mounting seat 1 is provided with a liquid passage 102, which can be opened and closed by the up and down movement of the valve body 4. A baffle 401 is provided in the middle of the valve body 4. The baffle 401 is arched upward and can cover the liquid passage 102. The baffle 401 is arranged on the inner side of the retaining edge 105. The lower end of the valve body 4 is provided with a movable groove 402 along its circumference, and the stopper 104 is located in the movable groove 402. The groove width of the movable groove 402 is greater than the height of the stopper 104. The valve body 4 has a certain vertical movable range, and the height of the upward arch of the baffle 401 is set corresponding to the height of the movable range.

[0035] Inner cover 5, see attached Figure 7 As shown, the inner cover 5 is movably arranged up and down inside the inner connecting sleeve 3. In the initial state, the upper and lower parts of the inner cover 5 are not connected. The inner cover 5 is configured to be lifted by the valve body 4 and achieve communication between the upper and lower parts. The upper end of the inner cover 5 is provided with a bell mouth 501 that matches the shape of the funnel mouth 302, and the funnel mouth 302 is arranged to abut the bell mouth 501. The lower end of the inner cover 5 is provided with a circle of support columns 502 along its circumference. When the valve body 4 moves upward, the support columns 502 are evenly distributed around it, and the lower ends of the support columns 502 are clamped on the outside of the flange 202. The flange 202 is set in the inner connecting sleeve 3 and is turned upward. The flange 202 and the inner wall of the inner connecting sleeve 3 form a circle of grooves. When the valve body 4 moves upward, the support columns 502 can be clamped into the grooves, and the head of the valve body 4 enters the inner side of the support columns 502, lifting the inner cover 5.

[0036] When the inner connecting sleeve 3 is at the lowest position, the valve body 4 moves upward relatively, the liquid passage 102 is closed, the upper portion of the liquid through hole 201 is open, the inner connecting seat 2 is connected to the inner connecting sleeve 3, and the upper portion of the inner cover 5 is open. When the inner connecting sleeve 3 is in the initial position, the valve body 4 is in the initial position, the liquid passage 102 is open, the top of the liquid hole 201 is closed, the inner connecting seat 2 and the inner connecting sleeve 3 are not connected, and the top of the inner cover 5 is closed.

[0037] The inner mounting seat 1, the inner connecting seat 2, the inner connecting sleeve 3, the valve body 4 and the inner cover 5 are all made of plastic.

[0038] Principle: The pump core structure needs to be installed in a cosmetic container for use. In the initial state, the inner connecting sleeve 3 is not under force, and the valve body 4 and the liquid hole 201 are in a closed state. At this time, the liquid passage 102 is open, and the liquid can flow upward into the liquid storage chamber inside the inner connecting seat 2. When the inner connecting sleeve 3 is pressed down by force, since the inner connecting sleeve 3 is fixedly connected to the inner connecting seat 2, the inner connecting seat 2 is pressed down together with the inner connecting sleeve 3, and the inner connecting seat 2 is deformed by force until it presses the baffle 401 of the valve body 4, thereby closing the liquid passage 102; at this time, the upper end of the valve body 4 emerges from the liquid hole 201 upward, and separates from the flange 202 of the liquid hole 201, so that the liquid hole 201 is opened, and the liquid flows out from the bottom to the top of the liquid hole 201; at this time, the inner cover 5 is pushed open by the valve body 4, and the liquid can flow out from the top of the inner connecting sleeve 3.

[0039] Example 2: This embodiment is a further improvement on the first embodiment, and its specific method is as follows: This embodiment provides a cosmetic container, including the springless pump core structure of the first embodiment, see the attached Figure 8 and attached Figure 9 As shown, it also includes a docking sleeve 6 and a pressing head 7. The docking sleeve 6 is sleeved on the outside of the pump core structure, and the pressing head 7 is arranged above the pump core structure; the pressing head 7 includes an outer sleeve 701 and an inner sleeve 702 connected to the liquid outlet. The lower end of the outer sleeve 701 is connected to the upper end of the docking sleeve 6, and the lower end of the inner sleeve 702 is sleeved on the inner connecting sleeve 3. Figure 10 As shown, the bottle body 8 and the bottle cap 11 are also included. The interior of the bottle body 8 is provided with an upper retaining seat 9 and a lower retaining seat 10. The upper retaining seat 9 is detachably provided below the docking sleeve 6. After the bottle body 8 is filled with liquid, it is placed in the upper retaining seat 9 to prevent the liquid from shaking during transportation. When in use, the bottle body 8 can be opened and taken out by itself. The lower retaining seat 10 is provided at the bottom of the bottle body 8. The outer wall of the docking sleeve 6 is provided with a circle of retaining edge 601. The bottle cap 11 is provided above the retaining edge 601 and is retained by the docking sleeve 6. The bottle body 8 is provided below the retaining edge 601 and is screwed to the docking sleeve 6. The bottle cap 11 is retained by the docking sleeve 6 and can be removed from the docking sleeve 6 when it needs to be opened. The bottle body 8 and the docking sleeve 6 are screwed together. The two can be screwed together by threaded connection and can be opened by rotation. After being opened by rotation, the upper retaining seat 9 is removed and then screwed closed for use.

[0040] The springless pump core structure designed in the present invention and the cosmetic container containing it, while ensuring the core performance of the pump core such as displacement, sealing, and feel, have brought revolutionary improvements in safety, reliability, durability, production efficiency, cost control, and environmental sustainability, and have significant market competitive advantages and application prospects.

[0041] The above embodiments are only for illustrating the technical concept and features of the present invention. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. It cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A springless pump core structure, characterized in that: include: An inner mounting seat (1), wherein a connecting pipe (101) is provided in the middle of the inner mounting seat (1); An inner connecting seat (2), the inner connecting seat (2) being mounted above the inner mounting seat (1), and a liquid through hole (201) being provided at an upper end of the inner connecting seat (2); An inner connecting sleeve (3), the inner connecting sleeve (3) being fixed above the inner connecting seat (2); A valve body (4), the valve body (4) is arranged inside the inner connecting seat (2), the upper end of the valve body (4) is arranged to pass through the liquid hole (201), and the liquid hole (201) is arranged to be opened and closed by the up and down movement of the valve body (4); the lower end of the valve body (4) is arranged to be inserted into the connecting pipe (101) in a movable manner up and down; and the inner mounting seat (1) is provided with a liquid passage (102) that can be opened and closed by the up and down movement of the valve body (4); An inner cover (5), the inner cover (5) being movably arranged up and down inside the inner connecting sleeve (3); in an initial state, the upper and lower parts of the inner cover (5) are not connected, and the inner cover (5) is configured to be lifted up by the valve body (4) and to achieve communication between the upper and lower parts; When the inner connecting sleeve (3) is at the lowest position, the valve body (4) moves upward relatively, the liquid passage (102) is closed, the upper portion of the liquid through hole (201) is open, the inner connecting seat (2) is connected to the inner connecting sleeve (3), and the upper portion of the inner cover (5) is open; When the inner connecting sleeve (3) is located at the initial position, the valve body (4) is located at the initial position, the liquid passage (102) is opened, the upper portion of the liquid through hole (201) is in a closed state, the inner connecting seat (2) is not connected to the inner connecting sleeve (3), and the upper portion of the inner cover (5) is in a closed state.

2. The springless pump core structure according to claim 1, characterized in that: A truncated cone-shaped mounting platform (103) is provided in the middle of the inner mounting seat (1); the liquid passage (102) is a hollow structure and is provided on the mounting platform (103); and the connecting pipe (101) is provided in the middle of the hollow structure; A stopper (104) is provided on the inner wall of the connecting pipe (101), and a plurality of retaining edges (105) higher than the upper end surface thereof are provided on the outer periphery of the mounting platform (103); an annular liquid groove (106) is provided on the radial outer side of the mounting platform (103), and an annular mounting groove (107) is provided on the radial outer side of the annular liquid groove (106).

3. The springless pump core structure according to claim 2, characterized in that: The inner connecting seat (2) is a circular cover structure, and the lower end of the inner connecting seat (2) is embedded in the annular mounting groove (107); the diameter of the upper end of the valve body (4) is larger than the diameter of the liquid hole (201).

4. The springless pump core structure according to claim 1, characterized in that: The liquid hole (201) is provided with an upward flange (202), the flange (202) is located inside the inner connecting sleeve (3), and the flange (202) is arranged to abut against the valve body (4).

5. The springless pump core structure according to claim 4, characterized in that: The upper end of the inner connecting sleeve (3) is provided with a plurality of notches (301), a circular funnel opening (302) is provided below the notches (301), a limiting strip (303) is provided on the inner side of the upper end of the inner connecting sleeve (3), the lower end of the inner connecting sleeve (3) is fixed around the liquid through hole (201), and the center line of the liquid through hole (201) is arranged to coincide with the center line of the inner connecting sleeve (3).

6. The springless pump core structure according to claim 2, characterized in that: A baffle (401) is provided in the middle of the valve body (4), and the baffle (401) is arched upward. The baffle (401) can cover the liquid passage (102). The baffle (401) is provided on the inner side of the retaining edge (105); the lower end of the valve body (4) is provided with a circle of movable grooves (402) along its circumference, and the stopper (104) is located in the movable groove (402).

7. The springless pump core structure according to claim 5, characterized in that: The upper end of the inner cover (5) is provided with a bell mouth (501) that matches the shape of the funnel mouth (302), and the funnel mouth (302) is arranged to abut against the bell mouth (501); A circle of support columns (502) is provided at the lower end of the inner cover (5) along its circumference; when the valve body (4) moves upward, the support columns (502) are evenly distributed around it, and the lower ends of the support columns (502) are clamped on the outside of the flange (202).

8. The springless pump core structure according to claim 1, characterized in that: The material of the pump core structure is plastic.

9. A cosmetic container comprising the springless pump core structure according to any one of claims 1 to 8, characterized in that: It also includes a docking sleeve (6) and a pressing head (7), wherein the docking sleeve (6) is sleeved on the outside of the pump core structure, and the pressing head (7) is arranged above the pump core structure; The pressing head (7) comprises an outer sleeve (701) and an inner sleeve (702) connected to the liquid outlet, the lower end of the outer sleeve (701) is connected to the upper end of the docking sleeve (6), and the lower end of the inner sleeve (702) is sleeved on the inner connecting sleeve (3).

10. The cosmetic container according to claim 9, characterized in that: It also includes a bottle body (8) and a bottle cap (11), wherein an upper card seat (9) and a lower card seat (10) are provided inside the bottle body (8), wherein the upper card seat (9) is detachably provided below the docking sleeve (6), and the lower card seat (10) is provided at the bottom of the bottle body (8); The outer wall of the docking sleeve (6) is provided with a clamping edge (601), the bottle cap (11) is arranged above the clamping edge (601) and is clamped to the docking sleeve (6), and the bottle body (8) is arranged below the clamping edge (601) and is screwed to the docking sleeve (6).

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