One-way valve structure and breast pump

Abstract

The utility model relates to the technical field of breast pumps, in particular to a one-way valve structure and a breast pump. The one-way valve structure is used for the breast pump, the one-way valve structure comprises a cover body, the cover body is provided with a valve seat, a liquid outlet located in the valve seat and a one-way valve connected with the liquid outlet, the one-way valve comprises an elastic part covering the liquid outlet, and the elastic part is pushed by liquid to move in the direction away from the liquid outlet so that the liquid outlet can be opened; the cover body, the valve seat and the one-way valve are all made of elastic materials. The elastic part can reset to keep the sealing effect and prevent emulsion from flowing back, when the emulsion flows to the liquid outlet, the elastic part moves in the direction far away from the liquid outlet, the emulsion can be transferred from an opening formed between the elastic part and the liquid outlet, impact of the emulsion on the one-way valve is reduced, the service life of the one-way valve is prolonged, and the service life of the one-way valve is prolonged. The arrangement of the elastic part reduces the internal space of the milk storage bottle occupied by the one-way valve, and improves the milk storage capacity of the milk storage bottle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a breast pump technical field, specifically one -way valve structure and breast pump. BACKGROUND

[0002] The breast pump is a tool to help mothers collect breast milk, especially for those who cannot directly breastfeed or need to store breast milk for later use. The design of the breast pump can simulate the sucking action of the baby, thereby effectively stimulating the breast to secrete milk and pumping it out.

[0003] The existing breast pump generally installs a duckbill valve at the liquid outlet position to prevent liquid backflow, and the duckbill valve is extended into the milk storage bottle. The service life of such duckbill valve is short, and there is a certain height difference between the liquid outlet and the liquid outlet end of the duckbill valve. The duckbill valve itself extends in the vertical direction, which will limit the maximum capacity of the milk storage bottle to the lowermost height of the duckbill valve. Therefore, it is necessary to improve the one-way valve structure of the breast pump, which can better improve the service life of the one-way valve and increase the milk storage capacity of the breast pump without affecting the transfer of liquid to the outside of the liquid outlet. SUMMARY

[0004] In view of the technical problems of short service life of the duckbill valve of the existing breast pump and small milk storage capacity of the milk storage bottle, the utility model solves the technical problems by adopting the technical scheme of:

[0005] A one-way valve structure for a breast pump, the one-way valve structure comprising a cover body, the cover body being provided with a valve seat, a liquid outlet at the valve seat, and a one-way valve connected with the liquid outlet, the one-way valve comprising an elastic part covering the liquid outlet, the elastic part moving away from the liquid outlet under the push of liquid to open the liquid outlet.

[0006] The cover body, the valve seat and the one-way valve are all made of elastic material.

[0007] Further, in some embodiments of the utility model, the cover body, the valve seat and the one-way valve are integrally formed.

[0008] Further, in some embodiments of the utility model, the valve seat is provided with a first positioning part, the one-way valve comprises a covering part connected to the outside of the elastic part, and a first matching part located on the covering part and matched with the first positioning part, the elastic part moves relative to the covering part to switch the liquid outlet between the open state and the closed state.

[0009] Furthermore, in some embodiments of this utility model, the cover portion is provided with an elastic part connecting end connected to the elastic part, and a one-way valve connecting groove located between the inner side of the cover portion and the outer side of the elastic part, and the elastic part rotates around the elastic part connecting end to close or open the liquid outlet.

[0010] Furthermore, in some embodiments of this utility model, the thickness of the elastic part is less than the thickness of the cover part, and the one-way valve connecting groove is arranged in a "U" shape or an arc shape on the outside of the elastic part.

[0011] Furthermore, in some embodiments of this utility model, the first positioning part is provided in the form of a boss on the outside of the valve seat, and the first mating part is provided on the side of the cover part away from the elastic part and abuts and engages with the first positioning part; the first positioning part is provided with a first guide surface, and the first mating part is provided with a second guide surface that engages with the first guide surface, and both the first guide surface and the second guide surface are inclined surfaces.

[0012] Furthermore, in some embodiments of this utility model, the liquid outlet is disposed on the lower side of the valve seat, the elastic part is inclinedly disposed on the lower side of the liquid outlet, and part of the one-way valve connecting groove is close to the lowest height of the elastic part.

[0013] Furthermore, in some embodiments of the present invention, the cover includes an outer contour portion that fits against the breast, a first opening for the breast to extend into the inner cavity of the cover, and an extension portion extending away from the first opening. The one-way valve includes a connecting portion connecting the extension portion and the cover portion. The connecting portion is provided with a connecting portion groove and an opening located in the connecting portion groove.

[0014] Furthermore, in some embodiments of this utility model, the lower end face of the liquid outlet is an inclined surface, which gradually slopes downward from the side away from the one-way valve connecting groove to the side closer to the one-way valve connecting groove, with the lowest end of the inclined surface close to the first opening.

[0015] Another objective of this invention is to provide a breast pump, comprising a one-way valve structure as described above, and a support member connected to the one-way valve structure.

[0016] The beneficial effects of this utility model are as follows:

[0017] The one-way valve of this invention has an elastic part that can reset to maintain a sealing effect and prevent milk backflow. When the milk flows to the outlet, the elastic part moves away from the outlet, and the milk can be transferred through the opening between the elastic part and the outlet. This not only reduces the impact of the milk on the one-way valve and improves the service life of the one-way valve, but also reduces the space occupied by the one-way valve in the milk storage bottle, improves the milk storage capacity of the milk storage bottle, and further improves the reliability and user experience of the breast pump. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the one-way valve structure of this utility model in use.

[0019] Figure 2 for Figure 1 AA sectional view.

[0020] Figure 3 for Figure 1 Another perspective of the AA cross-section.

[0021] Figure 4 for Figure 3 Enlarged view of part B.

[0022] Figure 5 This is a schematic diagram of the one-way valve structure of this utility model in its non-use state.

[0023] Figure 6 This is a schematic diagram of the one-way valve structure of this utility model in a non-use state.

[0024] Figure 7 This is a schematic diagram showing the connection between the one-way valve structure and the support component of this utility model. Detailed Implementation

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] Example 1

[0029] like Figures 1 to 7 The diagram shows a one-way valve structure for a breast pump. The one-way valve structure includes a cover 1, a valve seat 8, a liquid outlet 4 located on the valve seat 8, and a one-way valve 5 connected to the liquid outlet 4. The one-way valve 5 includes an elastic part 6 that covers the liquid outlet 4. The elastic part 6 moves away from the liquid outlet 4 under the push of liquid, so that the liquid outlet 4 opens.

[0030] The cover 1, the valve seat 8, and the one-way valve 5 are all made of elastic material.

[0031] The one-way valve of this invention has an elastic part that can reset to maintain a sealing effect and prevent milk backflow. When the milk flows to the outlet, the elastic part moves away from the outlet, and the milk can be transferred through the opening between the elastic part and the outlet. This not only reduces the impact of the milk on the one-way valve and improves the service life of the one-way valve, but also reduces the space occupied by the one-way valve in the milk storage bottle, improves the milk storage capacity of the milk storage bottle, and further improves the reliability and user experience of the breast pump.

[0032] The elastic part of this invention covers the liquid outlet. The elastic part does not need to extend vertically. When the one-way valve is inserted into the milk storage bottle, it reduces the risk of the maximum liquid level decreasing due to excessive insertion, thus reducing the bottle's capacity. Specifically, the elastic part can rotate at one end, creating a gap between the elastic part and the liquid outlet, with the outlet open, allowing the milk to transfer outwards through the gap. Optionally, the elastic part can be completely translated under the pressure of the liquid, creating an opening between the elastic part and the liquid outlet, with the outlet open, allowing the milk to transfer outwards through the opening.

[0033] Furthermore, the elastic part of the one-way valve has a reset function. Driven by the liquid, the elastic part can move away from the outlet, thereby opening the outlet and allowing the emulsion to flow out smoothly. When there is no liquid pushing, the elastic part automatically returns to its original position, tightly fitting the outlet, effectively preventing backflow of the emulsion and ensuring one-way flow of the emulsion.

[0034] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, since the cover, valve seat, and one-way valve are all made of elastic material, the one-way valve structure has good flexibility and wear resistance, and is not easily damaged during long-term use, maintaining stable performance. In addition, the elastic material also allows the one-way valve to better adapt to outlets of different shapes and sizes, further improving the sealing effect.

[0035] Specifically, in some embodiments, the one-way valve is detachably connected to the valve seat. Users can simply remove the entire one-way valve structure from the breast pump body, clean it, and then reinstall it. This operation is simple and quick, simplifies the assembly process, and improves the practicality and user experience of the breast pump.

[0036] Of course, in some other embodiments, the check valve may be fixedly connected to the valve seat.

[0037] Optionally, the cover, valve seat, and check valve are made of elastic materials such as silicone, rubber, polypropylene, thermoplastic elastomer, thermoplastic elastomer, and polypropylene composite material.

[0038] Preferably, in this embodiment, the cover, valve seat, and one-way valve are made of silicone.

[0039] like Figures 2 to 4 The diagram shows a one-way valve structure. The valve seat 8 is provided with a first positioning part 80. The one-way valve 5 includes a cover part 51 connected to the outside of the elastic part 6, and a first mating part 511 located on the cover part 51 and connected to the first positioning part 80. The elastic part 6 moves relative to the cover part 51 so that the liquid outlet 4 switches between an open state and a closed state.

[0040] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, by providing a first positioning part on the valve seat and a first mating part that cooperates with and connects to the first positioning part on the cover part of the one-way valve, the one-way valve and the valve seat are stably and reliably positioned and connected, thereby ensuring that the one-way valve will not accidentally fall off or shift due to liquid pressure, vibration or other external factors during the operation of the breast pump, and thus ensuring the one-way flow of the milk.

[0041] Optionally, in some embodiments, the first positioning part and the first mating part can be fixed by means of snap-fit ​​connection, threaded connection, magnetic connection, slot connection, etc. The mating connection between the first positioning part and the first mating part makes the connection between the one-way valve and the valve seat both tight and easy to disassemble. When the user needs to clean the breast pump, the one-way valve can be easily removed from the valve seat, thereby improving the convenience of cleaning.

[0042] Preferably, in this embodiment, a snap-fit ​​connection is used for the connection. Of course, other connection methods can also be combined to increase the connection stability between the check valve and the valve seat.

[0043] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the movable arrangement of the elastic part relative to the cover part allows the one-way valve to switch between an open and closed state. The elastic part flexibly ensures that the milk flows smoothly during the operation of the breast pump. When there is no liquid flow or external force applied, the elastic part can keep the outlet closed to prevent milk backflow. At the same time, since both the elastic part and the cover part are made of elastic material, they have good wear resistance and fatigue resistance, and can maintain stable performance over a long period of time.

[0044] Optionally, in some embodiments, the outlet may be located directly below the valve seat. Specifically, in some embodiments, when the elastic part moves, it may be a rotation caused by the positional deformation of a local elastic part, or a translation of the entire elastic part under the push of the liquid.

[0045] Optionally, in some embodiments, the outlet may also be located on the side of the valve seat. Specifically, in some embodiments, when the elastic part moves, the liquid pushes the elastic part to rotate due to the positional deformation of the local elastic part.

[0046] like Figure 5 The diagram shows a one-way valve structure, wherein the cover portion 51 is provided with an elastic part connecting end 510 connected to the elastic part 6, and a one-way valve connecting groove 512 located between the inner side of the cover portion 51 and the outer side of the elastic part 6. The elastic part 6 rotates around the elastic part connecting end 510 to cover or open the liquid outlet 4.

[0047] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, when the emulsion is drawn out, the elastic part can rotate around the connecting end of the elastic part, thereby making the one-way valve more flexible and rapid in response to liquid flow. The elastic part can quickly open the outlet, allowing the emulsion to flow out smoothly; and when no liquid flows out, the elastic part can quickly return to its original position, tightly sealing the outlet to prevent external emulsion from flowing back.

[0048] Specifically, the design of the elastic part's connecting end creates a stable connection structure between the elastic part and the cover. When the elastic part covers the liquid outlet, it fits tightly against the outlet, forming an effective seal and reducing the backflow of external emulsion into the casing. While the cover supports the elastic part, the one-way valve connecting groove allows the elastic part ample space to rotate. The elastic part can rotate without moving the entire cover; it only needs to rotate around its connecting end. This reduces the external force required to rotate or reset the elastic part, resulting in higher sensitivity.

[0049] In this embodiment, when the elastic part rotates partially, the angle of rotation and the distance moved in the vertical direction are small. Even if the one-way valve structure extends into the milk storage bottle, the influence of the one-way valve structure on the maximum capacity of the milk storage bottle can be reduced.

[0050] Of course, in some embodiments, when there are at least two elastic part connection ends, the symmetrical arrangement of the elastic part connection ends ensures that the elastic part is subjected to uniform force. When the elastic part comes into contact with the liquid, the elastic part overcomes the external force and moves away from the liquid outlet. After the elastic part moves, the emulsion can flow outward from the one-way valve connection groove.

[0051] like Figure 5 The one-way valve structure shown has an elastic part 6 with a thickness less than the cover part 51, and the one-way valve connecting groove 512 is arranged in a U-shape or an arc shape on the outside of the elastic part 6.

[0052] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the thickness of the elastic part is smaller than that of the cover part, so that the elastic part is more likely to deform under liquid pressure, thereby reacting more quickly when the liquid flows, thereby improving the sensitivity of the one-way valve, so that the milk can flow out more smoothly during the operation of the breast pump, and close quickly when there is no external force to prevent the milk from flowing back.

[0053] Of course, the thickness of the elastic part near the connection end of the elastic part can be less than the thickness of the overall cover part, making it easier for the elastic part to rotate. Alternatively, the thickness of the entire elastic part can be less than the thickness of the overall cover part, making the elastic part more sensitive.

[0054] Specifically, because the elastic part is thinner, it requires less force to deform, and therefore experiences relatively less stress. This helps reduce wear and fatigue of the elastic part during long-term use, thereby extending the service life of the check valve. At the same time, the arc-shaped or U-shaped connection groove design of the check valve can distribute stress more evenly, further enhancing the durability of the check valve.

[0055] Furthermore, the thinner design of the elastic section allows it to fit more tightly against the valve seat when the outlet is closed, forming an effective seal. The arc or U-shaped design of the one-way valve connection groove also helps to improve the uniformity and stability of the seal.

[0056] Optionally, in some embodiments, the U-shaped one-way valve connection groove makes the elastic part correspondingly U-shaped. Of course, the elastic part can be a loose polygonal shape.

[0057] Optionally, in some embodiments, the arc-shaped one-way valve connection groove makes the elastic part correspondingly arc-shaped. Of course, the arc shape can be an open circle or an open ellipse.

[0058] like Figures 2 to 5 The diagram shows a one-way valve structure in which the first positioning part 80 is provided in the form of a boss on the outside of the valve seat 8, and the first mating part 511 is provided on the side of the cover part 51 away from the elastic part 6 and abuts and engages with the first positioning part 80.

[0059] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the abutting and engaging design of the first positioning part and the first mating part provides a stable and reliable connection between the one-way valve and the valve seat. The boss-shaped first positioning part ensures tight contact with the first mating part, preventing the one-way valve from accidentally falling off or shifting due to vibration or liquid pressure during the operation of the breast pump. This design ensures the stability and reliability of the one-way valve, thereby guaranteeing the unidirectional flow of the milk and the normal function of the breast pump. The tight contact between the first positioning part and the first mating part helps to enhance the sealing performance of the one-way valve. When the one-way valve is closed on the valve seat, the first mating part can fit tightly against the first positioning part, forming an effective sealing structure.

[0060] Specifically, the protruding first positioning part and its mating first fitting part design simplify the assembly process of the check valve. Because the check valve is flexible, the user only needs to align the cover of the check valve with the first positioning part on the valve seat and then gently press to achieve a snap-fit ​​connection. This design not only improves assembly efficiency but also reduces the error rate that may occur during assembly.

[0061] like Figures 1 to 7 The one-way valve structure shown includes a cover 1 that fits against the breast, a first opening 12 for the breast to extend into the inner cavity of the cover 1, and an extension 7 extending away from the first opening 12. The one-way valve 5 includes a connecting portion 52 connecting the extension 7 and the cover 51.

[0062] Furthermore, as a preferred embodiment of this utility model and not a limitation, the outer contour of the cover fits snugly against the breast, providing a good seal and preventing lotion leakage. In addition, the first opening allows the breast to easily enter the inner cavity of the cover, while the extension provides sufficient space within the inner cavity to create negative pressure.

[0063] Optionally, in some embodiments, the extension 7 is connected to a suction bowl 71, which can create negative pressure in the inner cavity of the cover by deforming the suction bowl. Of course, in some embodiments, an external pressure source can also be directly connected to the inner cavity of the cover to generate negative pressure.

[0064] Specifically, the connection part of the check valve is connected between the extension part and the cover part, which ensures that the check valve can be more securely connected between the extension part and the cover part, thereby enhancing its stability during use and reducing the inconvenience for users to find the check valve after disassembly.

[0065] Example 2

[0066] Example 2, based on Example 1, has the following implementation method:

[0067] The cover 1 is integrally formed with the valve seat 8 and the one-way valve 5.

[0068] Existing breast pumps typically have a duckbill valve installed at the liquid outlet of the pump body to prevent backflow of liquid. Since breast pumps need to be disassembled and cleaned frequently, it can lead to time spent searching for parts or affect the efficiency of assembly.

[0069] The cover, valve seat, and check valve of this utility model adopt an integrated molding design, which greatly reduces the number of parts. This not only avoids the inconvenience of users having to spend time searching for each part during disassembly and cleaning, but also improves the efficiency of assembly.

[0070] The one-piece design reduces the need for additional connecting structures between the cover, valve seat, and check valve. By reducing gaps or dead corners, it facilitates cleaning and reduces the risk of bacterial growth.

[0071] Optionally, the cover, valve seat, and check valve can be integrally formed by injection molding, compression molding, or liquid silicone injection molding.

[0072] Preferably, in this embodiment, the cover, valve seat, and one-way valve are integrally formed by injection molding.

[0073] Example 3

[0074] Example 3, based on Example 1, has the following implementation method:

[0075] like Figures 2 to 5 The diagram shows a one-way valve structure, in which the outlet 4 is located on the lower side of the valve seat 8, the elastic part 6 is inclinedly located on the lower side of the outlet 4, and part of the one-way valve connecting groove 512 is close to the lowest height of the elastic part 6.

[0076] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the outlet is located on the lower side of the valve seat, allowing the emulsion to fall naturally in the direction of gravity when flowing out, reducing flow resistance. Simultaneously, the elastic part is inclinedly positioned below the outlet, further guiding the emulsion to flow out smoothly, preventing accumulation and blockage inside the one-way valve, thereby optimizing the emulsion flow path and improving the breast pump's pumping efficiency.

[0077] Specifically, the valve seat 8 extends vertically and is provided with valve seat channels 81 that communicate with the inner cavity of the cover and the liquid outlet respectively.

[0078] Specifically, the inclined design of the elastic part and the partial one-way valve connection groove close to its lowest point helps to form a tighter seal when the elastic part covers the outlet. When there is no external force, the elastic part can better fit on the valve seat due to its own weight and inclination angle, preventing emulsion backflow. This design enhances the sealing performance of the one-way valve and ensures the one-way flow of the emulsion.

[0079] In addition, due to the inclined setting of the elastic part, when the emulsion flows out, it will flow along the inclined surface of the elastic part, reducing the direct thrust and friction with the elastic part, which helps to reduce the wear of the one-way valve during long-term use and extend its service life.

[0080] Optionally, in some embodiments, when the elastic part is inclined, when the connecting end of the elastic part is close to the uppermost side of the cover, when the emulsion comes into contact with the elastic part, the elastic part will rotate downward around the upper connecting end of the elastic part, and the liquid will flow downward from the upper side of the elastic part along the inclined surface of the elastic part.

[0081] Optionally, in some embodiments, when the elastic part is tilted, when the connecting end of the elastic part is close to the leftmost side of the cover, the emulsion contacts the elastic part, causing the elastic part to rotate laterally around the left connecting end. The liquid flows down the tilted surface of the elastic part from the right side.

[0082] Optionally, in some embodiments, when the elastic part is tilted, when the connecting end of the elastic part is close to the rightmost side of the cover, the emulsion contacts the elastic part, causing the elastic part to rotate laterally around the right-side connecting end. The liquid flows downward from the left side of the elastic part along its tilted surface.

[0083] Preferably, when the elastic part is inclined, the connecting end of the elastic part in this embodiment is close to the uppermost side of the cover part.

[0084] Optionally, in some embodiments, the first positioning part is inclined relative to the valve seat. Of course, the one-way valve can be inclined relative to the valve seat by setting the thickness of the two sides of the first positioning part to be different.

[0085] Optionally, in some embodiments, the cover portion is inclined relative to the valve seat. Of course, the elastic portion can be inclined relative to the valve seat by setting the thickness of the two sides of the cover portion to be different.

[0086] Example 4

[0087] Example 4, based on Example 1, has the following implementation method:

[0088] like Figures 2 to 5 The diagram shows a one-way valve structure, in which the lower end face of the outlet 4 is an inclined surface 41, which gradually slopes downward from the side away from the one-way valve connecting groove 512 to the side closer to the one-way valve connecting groove 512.

[0089] Specifically, when the one-way valve is connected to the valve seat, the elastic part is inclined, the connection end of the elastic part is close to the uppermost side of the cover part, and the inclined surface 41 gradually slopes downward from the side away from the one-way valve connection groove 512 to the side close to the one-way valve connection groove 512.

[0090] Furthermore, as a preferred embodiment of this invention and not a limitation thereof, the inclined surface design allows the emulsion to flow more smoothly in the direction of gravity during outflow. This natural flow direction reduces the accumulation and retention of emulsion at the outlet, helping to avoid blockage and contamination.

[0091] Specifically, when the one-way valve is closed, the inclined surface design allows the elastic part to better fit against the valve seat, forming a tight seal. This tight seal helps prevent milk from flowing back when the breast pump is not in use, keeping the breast pump clean and hygienic.

[0092] Additionally, the sloping design reduces the contact area between the emulsion and the outlet as it flows out, thus reducing friction and wear. This design helps extend the lifespan of the outlet and the one-way valve, reducing the frequency of maintenance and replacement. The sloping design also makes the outlet easier to rinse with water or other cleaning agents during cleaning, reducing hard-to-reach areas. This design improves cleaning convenience and helps users better maintain the cleanliness and hygiene of the breast pump.

[0093] Example 5

[0094] Example 5, based on Example 1, has the following implementation method:

[0095] like Figure 4 The diagram shows a one-way valve structure, in which the first positioning part 80 is provided with a first guide surface 801, and the first mating part 511 is provided with a second guide surface 5111 that mates with the first guide surface 801. Both the first guide surface 801 and the second guide surface 5111 are inclined surfaces.

[0096] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the inclined design of the first guide surface and the second guide surface has a guiding function, allowing the first mating part to slide more easily along the direction of the first guide surface and accurately engage with the first positioning part during the assembly of the one-way valve. This design simplifies the installation process, reduces installation difficulty, and improves assembly efficiency. When the first guide surface and the second guide surface are tightly fitted, the sealing structure formed between them helps prevent emulsion leakage. The inclined design makes the sealing surface more uniform, improving the reliability and durability of the seal.

[0097] Specifically, the beveled fit design helps to distribute stress and reduce wear on the first positioning part and the first mating part during long-term use. This design extends the service life of the check valve, reduces the frequency of maintenance and replacement, and thus lowers operating costs. The beveled fit design allows the first positioning part and the first mating part to form a tighter contact after engagement, thereby enhancing the stability of the connection. This stable connection helps prevent the check valve from loosening or falling off due to vibration or external forces during use, ensuring the normal operation of the breast pump and the one-way flow of breast milk.

[0098] Example 6

[0099] Example 6, based on Example 1, has the following implementation method:

[0100] like Figure 5 The one-way valve structure shown has a connecting part 52 with a connecting part groove 521 and an opening 522 located in the connecting part groove 521. The connecting part groove and the opening help to disperse stress, facilitate bending of the connecting part, and improve its durability.

[0101] Example 7

[0102] Example 7, based on Example 4, has the following implementation method:

[0103] like Figures 2 to 5 The diagram shows a one-way valve structure, with the lowermost end of the inclined surface 41 located near the first opening 12.

[0104] Optionally, in some embodiments, the inclined surface 41 gradually slopes downward from the side away from the first opening 12 to the side closer to the first opening 12. This arrangement shortens the flow path of the emulsion from the inner cavity of the cover to the outlet, which can reduce the situation where local liquid accumulates at the outlet but the elastic part has not yet opened.

[0105] Example 8

[0106] Example 8, based on the above examples, has the following implementation method:

[0107] likeFigure 7 As shown, another objective of this utility model is to provide a breast pump, including the one-way valve structure as described above, and a support member 9 connected to the one-way valve structure.

[0108] Furthermore, as a preferred embodiment of this utility model and not a limitation thereof, the one-way valve structure design ensures the one-way flow of the milk, effectively preventing milk backflow and leakage, thereby improving the milk pumping efficiency. The milk can be smoothly drawn from the breast and flows into the milk storage bottle through the one-way valve.

[0109] Specifically, the connection design between the support component and the one-way valve structure allows the breast pump to better conform to the breast, providing stable support and avoiding the problem of insufficient sealing caused by the shield deforming and not returning to its original position. This design helps reduce pressure and discomfort on the breast during breast pumping, making the user feel more comfortable.

[0110] Optionally, in some embodiments, the one-way valve structure and support are detachably connected, making cleaning and maintenance simpler. Users can easily remove these components from the breast pump, rinse them with water, and sterilize them with a suitable disinfectant. This design helps maintain the hygiene of the breast pump and reduces the risk of bacterial growth.

[0111] Optionally, in some embodiments, the one-way valve structure and the support are connected by a rubber coating process. Specifically, the support is made of a rigid material such as polypropylene, polycarbonate, acrylonitrile-butadiene-styrene copolymer, etc., while the one-way valve structure is made of a softer material such as silicone, natural rubber, thermoplastic elastomer, etc. This makes the components more durable, able to withstand wear and stress during long-term use, and less prone to damage or deformation, thereby extending the service life of the breast pump.

[0112] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A one-way valve structure for a breast pump, the one-way valve structure comprising a cover (1), characterized in that: The cover body (1) is provided with a valve seat (8), a liquid outlet (4) located at the valve seat (8), and a one-way valve (5) connected to the liquid outlet (4). The one-way valve (5) includes an elastic part (6) covering the liquid outlet (4). The elastic part (6) moves away from the liquid outlet (4) under the push of liquid so as to open the liquid outlet (4). The cover body (1), the valve seat (8), and the one-way valve (5) are all made of elastic materials.

2. The one-way valve structure according to claim 1, characterized in that: The cover body (1), the valve seat (8), and the one-way valve (5) are integrally formed.

3. The one-way valve structure according to claim 1, characterized in that: The valve seat (8) is provided with a first positioning part (80). The one-way valve (5) includes a covering part (51) connected to the outside of the elastic part (6), and a first matching part (511) located on the covering part (51) and in mating connection with the first positioning part (80). The elastic part (6) rotates relative to the covering part (51) so as to switch the liquid outlet (4) between an open state and a closed state.

4. The one-way valve structure according to claim 3, characterized in that: The covering part (51) is provided with an elastic part connection end (510) connected to the elastic part (6), and a one-way valve connection groove (512) located between the inner side of the covering part (51) and the outside of the elastic part (6). The elastic part (6) rotates around the elastic part connection end (510) to cover or open the liquid outlet (4).

5. A one-way valve structure according to claim 4, characterized in that: The thickness of the elastic part (6) is less than the thickness of the covering part (51). The one-way valve connection groove (512) is arranged in a "U" shape or an arc shape on the outside of the elastic part (6).

6. A one-way valve structure according to claim 3, characterized in that: The first positioning part (80) is arranged in a boss shape on the outside of the valve seat (8). The first matching part (511) is arranged on the side of the covering part (51) away from the elastic part (6) and is in abutting engagement with the first positioning part (80). The first positioning part (80) is provided with a first guiding surface (801). The first matching part (511) is provided with a second guiding surface (5111) that mates with the first guiding surface (801). Both the first guiding surface (801) and the second guiding surface (5111) are inclined surfaces.

7. A one-way valve structure according to claim 4, characterized in that: The liquid outlet (4) is arranged on the lower side of the valve seat (8). The elastic part (6) is inclined and arranged on the lower side of the liquid outlet (4). Part of the one-way valve connection groove (512) is close to the lowest height of the elastic part (6).

8. A one-way valve structure according to claim 4, characterized in that: The cover body (1) includes an outer contour part (11) that fits the breast, a first opening (12) for the breast to extend into the inner cavity of the cover body (1), and an extension part (7) extending away from the first opening (12). The one-way valve (5) includes a connecting part (52) connected between the extension part (7) and the covering part (51). The connecting part (52) is provided with a connecting part groove (521) and an opening (522) located in the connecting part groove (521).

9. A one-way valve structure according to claim 8, characterized in that: The lower end face of the outlet (4) is an inclined surface (41). The inclined surface (41) gradually slopes downward from the side away from the one-way valve connecting groove (512) to the side closer to the one-way valve connecting groove (512). The lowermost end of the inclined surface (41) is close to the side of the first opening (12).

10. A breast pump, characterized in that: Includes the one-way valve structure as described in any one of claims 1-9, and the support member (9) connected to the one-way valve structure.

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