A one-way valve structure and a breast pump using the same

Abstract

This utility model discloses a one-way valve structure and a breast pump using the one-way valve, relating to the field of breast pump technology. The one-way valve structure includes a valve seat and a flexible one-way valve. The bottom of the valve seat is provided with a milk inlet and an assembly part. The flexible one-way valve includes an assembly section and a deformation section. The deformation section is located below the milk inlet and can elastically deform towards or away from the milk inlet to close or open it. By adopting a design where the assembly section of the flexible one-way valve is fixedly connected to the assembly part of the valve seat, the flexible one-way valve and the valve seat become a single unit, eliminating the need for disassembly, greatly simplifying cleaning steps, improving user experience, and ensuring the stability of the one-way valve during use. This prevents any displacement or loosening during breast pumping, thereby ensuring smooth milk flow and effective valve closure.

Description

Technical Field

[0001] This utility model relates to the field of breast pump technology, and in particular to a one-way valve structure and a breast pump using the one-way valve. Background Technology

[0002] Breast pumps are a common product used by breastfeeding women. They make it easy to collect breast milk and are a helpful tool in the process of feeding a baby. There are many types of breast pumps on the market, but most of them use similar technical solutions in their structural design.

[0003] The one-way valve is a key component of the breast pump, which is crucial for the normal operation and hygiene of the pump. The one-way valve controls the flow of milk, ensuring that the milk flows into the collector in one direction without backflow.

[0004] However, most existing breast pumps use a detachable structure for the connection between the check valve and the valve seat. For example, the check valve and the valve seat are connected by a simple snap or threaded connection. Users need to manually assemble them during use. Although this design makes it easy to assemble the breast pump, it has many inconveniences and potential hygiene hazards in actual use.

[0005] Since check valves require regular cleaning, the detachable design means that users must remove them from the valve seat, clean them, and then reinstall them each time they need to clean them, which is very inconvenient.

[0006] Furthermore, the detachable structure requires users to install the one-way valve correctly. Even slight deviations may affect the normal operation of the breast pump, leading to problems such as reduced suction or milk backflow.

[0007] Furthermore, after the check valve is separated from the valve seat, the connection point is prone to accumulating dirt and grime, becoming a breeding ground for bacteria. Users cannot easily clean it thoroughly, posing a risk of cross-infection.

[0008] Furthermore, the small one-way valve is easily lost during disassembly and cleaning, causing inconvenience to users. If the lost part is not replaced in time, the breast pump will not work properly.

[0009] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0010] The aforementioned technical issues arise because most existing breast pumps use a detachable structure for the connection between the one-way valve and the valve seat, which presents numerous inconveniences and potential hygiene hazards in actual use.

[0011] The technical solution adopted by this utility model to solve its technical problem is:

[0012] A one-way valve structure includes a valve seat and an elastic one-way valve. The bottom of the valve seat is provided with a milk inlet and an assembly part. The elastic one-way valve includes an assembly section and a deformation section. The assembly section is fixedly connected to the assembly part. The deformation section is located below the milk inlet. The deformation section can elastically deform in a direction closer to or away from the milk inlet to close or open the milk inlet.

[0013] In the one-way valve structure described above, the assembly section includes an assembly protrusion, the assembly part includes an assembly groove, and the assembly protrusion engages with the assembly groove.

[0014] As described above, in a one-way valve structure, the assembly section further includes an assembly block disposed on the outer wall of the assembly protrusion and extending outward, and the assembly groove includes a first assembly area corresponding to the assembly protrusion and a second assembly area corresponding to the assembly block.

[0015] In the one-way valve structure described above, the assembly section and assembly part are fixedly connected by cold bonding, vulcanization, dripping glue or adhesive bonding processes.

[0016] In the one-way valve structure described above, the cross-sectional shape of the milk outlet is inclined downwards, and the deformation section is inclined downwards from the end connected to the assembly section toward its free end.

[0017] In the one-way valve structure described above, the cross-sectional shape at the connection between the assembly section and the deformation section is an upwardly concave arc shape.

[0018] As described above, the one-way valve structure further includes a milk bowl cover disposed at the bottom of the valve seat and detachably connected to the milk bowl. The bottom of the valve seat is also provided with an annular sealing element integrally formed with the valve seat. The annular sealing element is arranged around the inner side of the milk bowl cover, and there is a sealing gap between the milk bowl cover and the annular sealing element.

[0019] As described above, the one-way valve structure further includes a breast pumping channel, the valve seat is located below the breast pumping channel, and a sealing member is provided on the outside of the breast pumping channel. The sealing member includes a first sealing groove that can be sealed to the end of the negative pressure cover and a second sealing groove that can be sealed to the bottom of the negative pressure cover.

[0020] As described above, the one-way valve structure further includes a milk suction channel, a suction bowl, a breast shield, and a milk bowl cover. The milk bowl cover and the valve seat are both located below the milk suction channel. The milk bowl cover is arranged around the outside of the valve seat. One end of the milk suction channel is connected to the breast shield. The suction bowl is located on the outer wall of the milk suction channel. The breast shield, milk suction channel, suction bowl, and milk bowl cover are integrally formed.

[0021] A breast pump includes a one-way valve structure as described in any of the above claims.

[0022] The beneficial effects of this utility model are:

[0023] This utility model relates to a one-way valve structure and a breast pump using the one-way valve, and pertains to the field of breast pump technology. The one-way valve structure includes a valve seat and a flexible one-way valve. The bottom of the valve seat has a milk inlet and an assembly part. The flexible one-way valve includes an assembly section and a deformation section. The deformation section is located below the milk inlet and can elastically deform towards or away from the milk inlet to close or open it. By using a design where the assembly section of the flexible one-way valve is fixedly connected to the assembly part of the valve seat, the flexible one-way valve and the valve seat become a single unit, eliminating the need for disassembly, greatly simplifying cleaning procedures, improving user experience, and ensuring the stability of the one-way valve during use. This prevents any displacement or loosening during breast pumping, thereby ensuring smooth milk flow and effective valve closure.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the breast pump of this utility model;

[0026] Figure 2 This is a front view schematic diagram of the breast pump of this utility model;

[0027] Figure 3 for Figure 2 Cross-sectional view and enlarged view along line AA;

[0028] Figure 4 This is one of the exploded view diagrams of the breast pump of this utility model;

[0029] Figure 5 This is an exploded view of the bra structure of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the elastic check valve of this utility model;

[0031] Figure 7 This is a second exploded view and a partially enlarged view of the breast pump of this utility model;

[0032] Figure 8 This is the third exploded view of the breast pump of this utility model;

[0033] Figure 9 This is the fourth exploded view of the breast pump of this utility model. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] like Figures 1 to 9 As shown, a one-way valve structure in this embodiment includes a valve seat 1 and an elastic one-way valve 2. The bottom of the valve seat 1 is provided with a milk outlet 11 and an assembly part 12. The elastic one-way valve 2 includes an assembly section 21 and a deformation section 22. The assembly section 21 is fixedly connected to the assembly part 12. The deformation section 22 is located below the milk outlet 11. The deformation section 22 can elastically deform in the direction of approaching or moving away from the milk outlet 11 to close or open the milk outlet 11.

[0038] In this embodiment, the assembly section 21 of the elastic one-way valve 2 is fixedly connected to the assembly part 12 of the valve seat 1, so that the elastic one-way valve 2 and the valve seat 1 become a whole, eliminating the need for disassembly, greatly simplifying the cleaning process, improving the user experience, and this fixed connection ensures the stability of the one-way valve during use, preventing any displacement or loosening during the milk pumping process, thereby ensuring smooth milk flow and effective valve closure.

[0039] Furthermore, detachable check valves, due to their small size, are easily lost during disassembly and cleaning. The integrated design avoids this risk, eliminating user concerns about lost parts and thus improving product reliability.

[0040] Furthermore, the detachable structure requires users to install the one-way valve correctly. Even slight deviations may affect the performance of the breast pump. The integrated design of the flexible one-way valve 2 and the valve seat 1 eliminates the assembly process and avoids problems such as reduced suction or milk backflow caused by improper assembly of the one-way valve.

[0041] Furthermore, the connection between the flexible one-way valve 2 and the valve seat 1 is often a dead corner where dirt and bacteria can easily hide. The detachable design makes these areas difficult to clean thoroughly. The fixed connection between the flexible one-way valve 2 and the valve seat 1 eliminates these dead corners, making cleaning easier and more thorough, thereby improving the hygiene performance of the breast pump.

[0042] Preferably, the deformable section 22 is designed as an elastically deformable part, which means that it can automatically and elastically close or open the milk outlet 11 according to pressure changes. When the breast pump is in operation, the deformable section 22 on the assembly section 21 elastically deforms away from the milk outlet 11 under the weight of the milk to open the milk outlet 11 and allow the milk to flow out smoothly from the milk outlet 11.

[0043] When breastfeeding stops and the milk is emptied, the deformable section 22 naturally returns to its original position under elastic deformation, sealing the milk outlet 11 to prevent air from entering or milk from flowing back. Because the deformable section 22 can automatically seal the milk outlet 11, it effectively prevents external contaminants and air from entering the breastfeeding system, thereby greatly improving the hygiene and safety of the breastfeeding process. Specifically, the automatic sealing feature reduces the risk of milk backflow or leakage, and can maintain the safe collection of milk even when the breast pump is tilted or moved.

[0044] like Figures 1 to 9 As shown, in this embodiment, the assembly section 21 and the assembly part 12 are fixedly connected by cold bonding, vulcanization, dripping glue or bonding process.

[0045] Preferably, these processes use chemical reactions (such as vulcanization) or physical adhesion (such as cold bonding, dripping, and bonding) to tightly bond the surfaces of two components together. At the molecular level, cross-linking bonds or strong intermolecular forces are formed between the materials, thereby achieving a strong connection.

[0046] During the bonding process, the adhesive fills the tiny gaps between the two surfaces, forming a dense intermediate layer. This not only provides bonding strength but also acts as a seal, preventing milk from entering the gaps and creating unsanitary areas.

[0047] Furthermore, compared to mechanical connections, chemical connections can distribute stress evenly across the entire connection surface, avoiding stress concentration and improving the reliability of the connection between assembly section 21 and assembly part 12.

[0048] Furthermore, this chemical bond can effectively absorb and buffer external vibrations and shocks, extending the service life of the equipment.

[0049] In other embodiments, the assembly section 21 and the assembly part 12 can also be fixedly connected by processes such as hot melt welding or ultrasonic welding, and a suitable design can be selected according to actual needs.

[0050] Preferably, in this embodiment, the assembly section 21 includes an assembly protrusion 211, the assembly part 12 includes an assembly groove, the assembly protrusion 211 is inserted into the assembly groove, and the assembly protrusion 211 and the assembly groove are fixedly connected by processes such as cold bonding, vulcanization, dripping glue or bonding.

[0051] Specifically, the assembly protrusion 211 of the assembly section 21 is designed to precisely engage with the assembly groove in the assembly part 12. The use of this protrusion and groove together forms a physical fit, which increases the physical stability of the connection. Through processes such as cold bonding, vulcanization, dripping glue or bonding, these processes form a strong chemical or adhesive force between the assembly protrusion 211 and the assembly groove through chemical reaction or physical adhesion, so that the elastic one-way valve 2 and the valve seat 1 become a whole and achieve a fixed connection.

[0052] Furthermore, the dual protection mechanism of physical interlocking and chemical bonding greatly enhances the stability of the connection between the elastic check valve 2 and the valve seat 1, preventing loosening or detachment during use.

[0053] Furthermore, processes such as cold bonding, vulcanization, dripping, or adhesive bonding can provide additional durability, allowing the joints to withstand more uses and greater impacts, thus extending the product's lifespan.

[0054] Preferably, the assembly protrusion 211 and the assembly groove can also be connected by ultrasonic welding or hot plate welding. By heating the two to their melting point and applying pressure, the two parts are fused together to form a strong fixed connection. A suitable design can be selected according to actual needs.

[0055] Preferably, the assembly section 21 in this embodiment further includes an assembly block 212 disposed on the outer wall of the assembly protrusion 211 and extending outward. The assembly groove includes a first assembly area 121 corresponding to the assembly protrusion 211 and a second assembly area 122 corresponding to the assembly block 212. The assembly protrusion 211 and the first assembly area 121 form a basic fit, while the design of the assembly block 212 and the second assembly area 122 provides additional locking points, enhancing the stability of the structure.

[0056] Furthermore, through processes such as cold bonding, vulcanization, dripping adhesive, or bonding, chemical bonding or physical adhesion is achieved not only between the assembly protrusion 211 and the first assembly area 121, but also between the assembly clip 212 and the second assembly area 122. This dual bonding method provides a stronger and more durable connection.

[0057] By using multiple locking mechanisms between assembly section 21 and assembly part 12, the overall structural strength and stability of the resilient check valve 2 and valve seat 1 are significantly improved, making the entire check valve more durable and reliable.

[0058] like Figures 1 to 9 As shown, the cross-sectional shape of the milk inlet 11 in this embodiment is inclined downwards. The deformation section 22 is inclined downwards from the end connected to the assembly section 21 toward its free end. With this design, the deformation section 22 can be better pre-pressed at the milk inlet 11 to achieve internal sealing. When the milk drips downwards, the deformation section 22 opens due to the weight of the milk. After all the milk has flowed out, the deformation section 22 closes with the milk inlet 11.

[0059] Preferably, the downward tilting design of the deformable section 22 and the milk outlet 11 allows the deformable section 22 to be naturally pre-pressed at the milk outlet 11 when no external force is applied. This pre-pressing can produce a sealing effect and prevent accidental leakage of milk when it is not needed.

[0060] When milk begins to flow, the weight of the milk exerts a force on the deformable section 22, causing it to deviate slightly or deform from the milk outlet 11, thereby opening the channel and allowing the milk to flow out smoothly.

[0061] Once the milk flow is complete, the deformable section 22, having lost the force of the milk (its own weight), returns downwards again due to its own elasticity, pressing tightly against the milk outlet 11 to re-seal the channel and prevent air from entering or other substances from leaking out. This design effectively utilizes the elasticity and structural layout of the deformable section 22 to achieve automatic sealing when there is no milk flow, effectively preventing milk leakage.

[0062] Furthermore, compared to the horizontal design, the downward tilted design allows the deformation section 22 to fit more tightly against the milk outlet 11 under the action of gravity. This geometric structure naturally enhances the pre-compression effect, thereby improving the sealing performance. Even when the breast pump is tilted or inverted, this downward tilted design can ensure that the deformation section 22 always maintains good contact with the milk outlet 11, preventing milk leakage.

[0063] Furthermore, since there is a certain angle between the deformation section 22 and the milk outlet 11, when the milk flows out, it is not only affected by the weight of the milk itself, but also by the dynamic pressure of the milk flow. Compared with the horizontal design, the inclined design makes these two forces form a resultant force when the deformation section 22 is opened. This resultant force is relatively easier to overcome the pre-pressure of the deformation section 22, thereby reducing the pressure required to open and allowing the milk to flow out more smoothly.

[0064] After the milk has drained, the inclined deformation section 22 can return to its initial position more quickly under the action of gravity and re-engage with the milk outlet 11. Compared with the horizontal design, this downwardly inclined structure allows the deformation section 22 to complete the closing action more quickly after the loss of milk dynamic pressure, reducing the risk of milk leakage and improving the closing response speed. In addition, the inclined design of both helps to empty the milk.

[0065] like Figures 1 to 9 As shown, the cross-sectional shape of the connection between the assembly section 21 and the deformation section 22 in this embodiment is an upwardly concave arc shape. That is, the connection between the assembly section 21 and the deformation section 22 adopts a rounded pre-compression design. With this design, the deformation section 22 can be better pre-compressed at the milk outlet 11 to achieve internal sealing.

[0066] Preferably, the rounded corner pre-compression design creates an upwardly concave arc transition zone between the deformation section 22 and the assembly section 21. This geometric structure can generate additional pre-stress at the root of the deformation section 22, making it fit more tightly against the milk outlet 11 and enhancing the sealing performance. When milk flows out, this pre-stress can also allow the deformation section 22 to quickly return to its original position after being subjected to milk pressure, and re-closely contact the milk outlet 11 to ensure a good sealing effect.

[0067] Furthermore, compared to right-angle connections, the rounded corner pre-compression design can effectively reduce stress concentration. At the connection between the deformation section 22 and the assembly section 21, the smooth transition can distribute stress more evenly throughout the connection area, avoiding excessive stress concentration at a certain point that could lead to material fatigue or damage. This design can improve the durability and reliability of the breast pump.

[0068] Furthermore, the rounded corner pre-compression design can also guide the deformation direction of the deformation section 22. When milk flows out, the concave arc transition area can cause the deformation section 22 to deform preferentially towards the lower milk outlet 11, rather than expanding outward. This guiding effect can ensure that the deformation section 22 can open the lower milk outlet 11 more effectively when under pressure, and at the same time reduce the radial displacement of the deformation section 22, thus improving the stability of the structure.

[0069] Specifically, the rounded pre-compression design between the deformation section 22 and the assembly section 21 can significantly improve the sealing performance of the breast pump by enhancing the pre-compression effect and guiding the deformation direction.

[0070] Preferably, the user can adopt a combined design of tilting the milk outlet 11 and rounded pre-compression at the connection between the assembly section 21 and the deformation section 22, or choose one of these designs, so that the deformation section 22 can be better pre-compressed at the milk outlet 11. The appropriate design can be selected according to actual needs.

[0071] like Figures 1 to 9 As shown, the one-way valve structure of this embodiment also includes a milk bowl cover 72 disposed at the bottom of the valve seat 1 and detachably connected to the milk bowl 61. The bottom of the valve seat 1 is also provided with an annular sealing member 31 integrally formed with the valve seat 1. The annular sealing member 31 is arranged around the inner side of the milk bowl cover 72, and there is a sealing gap 73 between the milk bowl cover 72 and the annular sealing member 31.

[0072] When the milk bowl 61 and the milk bowl lid 72 are assembled, the top of the milk bowl 61 is located within the sealing gap 73, and the outer wall of the annular seal 31 abuts against the inner side wall of the top of the milk bowl 61, thereby improving the sealing performance between the milk bowl 61 and the milk bowl lid 72, preventing milk leakage or air entry at the connection between the milk bowl 61 and the milk bowl lid 72, ensuring that the negative pressure during the milk pumping process is not destroyed, and ensuring the efficiency and hygiene of the milk pumping process.

[0073] Preferably, the top of the milk bowl 61 has a connecting upper edge 71, and the connecting upper edge 71 and the milk bowl lid 72 are detachably connected by means of threaded connection or snap-fit, which facilitates the connection between the milk bowl 61 and the milk bowl lid 72.

[0074] When the milk bowl 61 is assembled with the milk suction channel 3, the connecting upper edge 71 enters the sealing gap 73, and the inner wall of the milk bowl cover 72 abuts against the outer wall of the connecting upper edge 71, and the outer wall of the annular seal 31 abuts against the inner wall of the connecting upper edge 71.

[0075] When the upper edge 71 is inserted into the sealing gap 73, the upper edge 71 contacts the milk bowl cover 72 and the annular seal 31 simultaneously. The outer wall of the upper edge 71 abuts against the inner wall of the milk bowl cover 72 to form the first seal, and the inner wall of the upper edge 71 abuts against the outer wall of the annular seal 31 to form the second seal, thus forming a double seal. This design greatly improves the sealing performance of the breast pump and effectively prevents milk leakage and air from entering.

[0076] Preferably, the annular seal 31 and the valve seat 1 are integrally formed, which can further reduce the number of parts of the breast pump and facilitate assembly and cleaning.

[0077] like Figures 1 to 9As shown, the one-way valve structure of this embodiment also includes a breast pumping channel 3. The valve seat 1 is located below the breast pumping channel 3. A sealing member is provided on the outside of the breast pumping channel 3. The sealing member includes a first sealing groove 32 that can be sealed to the end of the negative pressure cover 62 and a second sealing groove 33 that can be sealed to the bottom of the negative pressure cover 62.

[0078] Preferably, the breast pump in this embodiment further includes a housing structure 6, which includes a negative pressure cover 62. The sealing member enables the milk suction channel 3 and the negative pressure cover 62 to be sealed together. The negative pressure cover 62 is provided with a first sealing slot 621 corresponding to the first sealing groove 32 and a second sealing slot 622 corresponding to the second sealing groove 33. When the negative pressure cover 62 is assembled with the milk suction channel 3, the first sealing slot 621 engages with the first sealing groove 32, and the second sealing slot 622 engages with the second sealing groove 33, so that an effective seal can be formed between the negative pressure cover 62 and the milk suction channel 3, preventing negative pressure leakage of the negative pressure cover 62, maximizing the suction force of the milk suction channel 3, thereby ensuring stable and effective suction force during the milk suction process, improving the efficiency of milk suction, and enhancing the usage effect.

[0079] Before use, the user aligns and presses the negative pressure cover 62 onto the breast pumping channel 3, ensuring that the first sealing snap 621 is correctly engaged in the first sealing groove 32 and the second sealing snap 622 is correctly engaged in the second sealing groove 33. Once engaged, a sealed environment is formed between the negative pressure cover 62 and the breast pumping channel 3. Due to the effectiveness of the sealing structure, the negative pressure will not leak, thereby ensuring the strength and stability of the suction and improving the efficiency of breast pumping.

[0080] Furthermore, the snap-fit ​​mechanism makes the installation and removal of the negative pressure shield and the breast pump channel 3 quick and easy, facilitating daily use and cleaning for users.

[0081] Preferably, the housing structure 6 further includes an upper housing 63, the negative pressure cover 62 is connected to the upper housing 63, and the first sealing slot 621 is a groove provided at the connection between the negative pressure cover 62 and the upper housing 63 and recessed inward.

[0082] The breast suction channel 3 is connected to the bra 4, and the first sealing groove 32 is a recessed groove located at the connection between the breast suction channel 3 and the bra 4.

[0083] The second sealing slot 622 is an clearance slot located at the bottom of the negative pressure cover 62, and the second sealing groove 33 is a clearance groove located on the outside of the breast pumping channel 3.

[0084] During assembly, the negative pressure cover 62 and the upper housing 63 form an integral structure. Then, the first sealing slot 621 of this structure is aligned and pressed with the first sealing groove 32 on the breast pumping channel 3, so that the two grooves are physically engaged. The second sealing slot 622 and the second sealing groove 33 are aligned and pressed with each other, so that the slots are physically engaged with each other. Through this engagement method, the negative pressure cover 62 and the breast pumping channel 3 form a stable and sealed connection, so as to achieve a sealed connection between the negative pressure cover 62 and the breast pumping channel 3, effectively preventing air leakage and ensuring the stability of suction.

[0085] Preferably, the second sealing groove 33 and the first sealing groove 32 are connected, which can form a more continuous and uniform sealing environment, which helps to further reduce any potential leakage points.

[0086] Furthermore, the design of two interconnected sealing grooves reduces the number of individual parts that require precise alignment during assembly, making the positioning of the negative pressure cover 62 easier.

[0087] Furthermore, the interconnected sealing groove design provides a continuous support environment, enhancing the overall structural stability of the breast pumping channel 3 and the negative pressure shield 62 after connection, and helping to resist physical stress and deformation.

[0088] Preferably, the cross-sectional shape of the structure in which the second sealing groove 33 and the first sealing groove 32 are connected is arc-shaped, that is, the connection between the second sealing groove 33 and the first sealing groove 32 is arc-shaped. The arc-shaped design can distribute pressure more effectively and reduce the risk of seal failure between the breast pumping channel 3 and the negative pressure cover 62 due to uneven pressure.

[0089] Preferably, in other embodiments, the first sealing slot 621 is a sealing protrusion located at the front end of the negative pressure cover 62, and the first sealing groove 32 includes a connecting protrusion located on the outer wall of the breast pumping channel 3 and a connecting groove located on the back of the connecting protrusion, wherein the sealing protrusion engages with the connecting groove; the second sealing groove 33 includes a slot located between the breast pumping channel 3 and the milk bowl cover 72, wherein the slot engages with the second sealing slot 622 to achieve a sealed connection between the negative pressure cover 62 and the breast pumping channel 3, and a suitable design can be selected according to actual needs.

[0090] like Figures 1 to 9 As shown, the one-way valve structure of this embodiment also includes a breast pumping channel 3, a suction bowl 5, a breast shield 4, and a milk bowl cover 72. The milk bowl cover 72 and the valve seat 1 are both located below the breast pumping channel 3. The milk bowl cover 72 is arranged around the outside of the valve seat 1. One end of the breast pumping channel 3 is connected to the breast shield 4. The suction bowl 5 is located on the outer wall of the breast pumping channel 3. The breast shield 4, the breast pumping channel 3, the suction bowl 5, and the milk bowl cover 72 are integrally formed structures.

[0091] Specifically, during use, the bra 4 comes into contact with the breast, and the suction source (such as an electric pump or manual squeezing) creates negative pressure inside the negative pressure cover 62 to drive the suction bowl 5 to move, thereby creating negative pressure inside the milk suction channel 3, stimulating milk secretion and drawing the milk into the milk suction channel 3.

[0092] Because the bra 4, the milk channel 3, the suction bowl 5, and the milk bowl cover 72 are made of one piece, the connection between each part is tighter, reducing the possibility of air leakage. This helps to maintain stable negative pressure during the milk expression process and improve milk expression efficiency. The tight one-piece connection effectively reduces the loss of suction and ensures that the suction can be efficiently transmitted to the breast, thereby improving milk expression efficiency and speed.

[0093] Furthermore, the one-piece molded structure reduces gaps and dead corners between components, making the cleaning and sterilization process more convenient and thorough. Users can easily disassemble, clean, and sterilize the entire breast pump to ensure the hygiene and safety of the equipment.

[0094] Furthermore, the design of the bra 4, breast pump channel 3, suction bowl 5, and milk bowl cover 72 as an integrated structure simplifies the structure of the bra components, making the assembly, disassembly, and operation of the breast pump simpler. Users do not need to spend too much time and effort assembling complex parts, making it more convenient to use.

[0095] like Figures 1 to 9 As shown, a breast pump according to this embodiment includes a one-way valve structure as described in any of the above claims.

[0096] This design simplifies the overall structure and reduces the number of components by integrating the valve seat 1 to the bottom of the milk suction channel 3, making the breast pump more compact and easier to assemble and clean.

[0097] Due to the design of the valve seat 1, the flow direction of milk can be effectively controlled, ensuring that milk is quickly drawn into the milk suction channel when negative pressure is generated, thus improving the efficiency and speed of milk suction.

[0098] In this embodiment, the assembly section 21 of the elastic one-way valve 2 is fixedly connected to the assembly part 12 of the valve seat 1, making the elastic one-way valve 2 and the valve seat 1 a whole, eliminating the need for disassembly, greatly simplifying the cleaning process, improving the user experience, and ensuring the stability of the one-way valve during use, preventing any displacement or loosening during the milk pumping process, thereby ensuring smooth milk flow and effective valve closure.

[0099] Preferably, in this embodiment, the valve seat 1 and the milk suction channel 3 are integrally molded, which means that there is no seam between the valve seat 1 and the milk suction channel 3. This can effectively prevent air and liquid leakage and maintain stable air pressure during the milk suction process.

[0100] Furthermore, since the valve seat 1 and the milk suction channel are integrally molded, the structure of both has high strength and better durability, reducing the need for repair and replacement due to interface damage. In addition, the integral molding process can reduce the assembly steps between the two, which can reduce production costs and time.

[0101] In other embodiments, the valve seat 1 and the milk suction channel 3 are detachably connected. This detachable connection design allows users to easily disassemble the valve seat and the milk suction channel for cleaning and maintenance, which helps to maintain the hygiene of the equipment and extend its service life.

[0102] Furthermore, if a part of the valve seat or breast pump channel is damaged, the user can replace the damaged part separately without replacing the entire system, which is economical. Moreover, users can replace the valve seat with one of different materials or performance as needed to adapt to different usage requirements and preferences.

[0103] You can choose the appropriate design based on your actual needs.

[0104] 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, characterized in that, The device includes a valve seat (1) and a flexible one-way valve (2). The bottom of the valve seat (1) is provided with a milk outlet (11) and an assembly part (12). The flexible one-way valve (2) includes an assembly section (21) and a deformation section (22). The assembly section (21) is fixedly connected to the assembly part (12). The deformation section (22) is located below the milk outlet (11). The deformation section (22) can elastically deform in the direction of approaching or moving away from the milk outlet (11) to close or open the milk outlet (11).

2. The one-way valve structure according to claim 1, characterized in that, The assembly section (21) includes an assembly protrusion (211), and the assembly part (12) includes an assembly groove, wherein the assembly protrusion (211) is engaged in the assembly groove.

3. The one-way valve structure according to claim 2, characterized in that, The assembly section (21) further includes an assembly block (212) located on the outer wall of the assembly protrusion (211) and extending outward. The assembly groove includes a first assembly area (121) corresponding to the assembly protrusion (211) and a second assembly area (122) corresponding to the assembly block (212).

4. The one-way valve structure according to claim 1, characterized in that, The assembly section (21) and assembly part (12) are fixedly connected by cold bonding, vulcanization, dripping or bonding processes.

5. A one-way valve structure according to claim 1, characterized in that, The cross-sectional shape of the milk outlet (11) is inclined downward, and the deformation section (22) is inclined downward from the end connected to the assembly section (21) toward its free end.

6. A one-way valve structure according to any one of claims 1 or 5, characterized in that, The cross-sectional shape at the connection between the assembly section (21) and the deformation section (22) is an upwardly concave arc shape.

7. A one-way valve structure according to claim 1, characterized in that, The one-way valve structure also includes a milk bowl cover (72) located at the bottom of the valve seat (1) and detachably connected to the milk bowl (61). The bottom of the valve seat (1) is also provided with an annular seal (31) integrally formed with the valve seat (1). The annular seal (31) is arranged around the inner side of the milk bowl cover (72), and there is a sealing gap (73) between the milk bowl cover (72) and the annular seal (31).

8. A one-way valve structure according to claim 1, characterized in that, The one-way valve structure also includes a breast pumping channel (3), the valve seat (1) is located below the breast pumping channel (3), and a sealing member is provided on the outside of the breast pumping channel (3). The sealing member includes a first sealing groove (32) that can be sealed to the end of the negative pressure cover (62) and a second sealing groove (33) that can be sealed to the bottom of the negative pressure cover (62).

9. A one-way valve structure according to claim 1, characterized in that, The one-way valve structure also includes a milk suction channel (3), a suction bowl (5), a bra (4), and a milk bowl cover (72). The milk bowl cover (72) and the valve seat (1) are both located below the milk suction channel (3). The milk bowl cover (72) is arranged around the outside of the valve seat (1). One end of the milk suction channel (3) is connected to the bra (4). The suction bowl (5) is located on the outer wall of the milk suction channel (3). The bra (4), the milk suction channel (3), the suction bowl (5), and the milk bowl cover (72) are integrally formed.

10. A breast pump, characterized in that, Includes the one-way valve structure as described in any one of claims 1 to 9.

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