A new type of one-way valve and breast pump using the same

Abstract

This utility model discloses a novel one-way valve and a breast pump using the same valve, relating to the field of breast pump technology. The novel one-way valve includes a valve seat and a plate-shaped deformable plate. The bottom of the valve seat has a milk inlet communicating with the milk suction channel and an assembly part integrally formed with the valve seat. The milk inlet and the assembly part are arranged adjacent to each other. The plate-shaped deformable plate includes a fixed section and a deformable section connected thereto. The fixed section is connected to the bottom of the milk suction channel, and the deformable section is connected to the assembly part and located below the milk inlet. The deformable section can elastically deform towards or away from the milk inlet to close or open it. The assembly part, integrally formed with the valve seat, reduces cleaning dead zones, making it easier for users to clean and reducing the risk of milk residue and bacterial growth. Furthermore, the adjacent arrangement of the milk inlet and the assembly part makes the deformation of the deformable section more sensitive, improving milk flow.

Description

Technical Field

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

[0002] Breast milk is the ideal food for infants, containing rich nutrients and immune substances that are beneficial to their healthy growth. However, due to the fast pace of modern society, many mothers are unable to breastfeed directly due to work or other reasons. In order to allow infants to continue to enjoy the benefits of breastfeeding, breast pumps have emerged. Breast pumps can help mothers extract milk from their breasts for their infants to consume.

[0003] Traditional breast pumps typically consist of components such as nipple shields, collection containers, valves, and suction devices. Among these, the valve is a key component connecting the nipple shield and the collection container, and it plays a role in controlling the flow of milk. However, existing breast pumps have some shortcomings in their valve design.

[0004] In existing breast pumps, the valve seat and assembly part are usually connected in a detachable way, such as threaded connection or snap connection. Although this design is convenient for assembly and disassembly, it has dead corners when cleaning, and milk residue can easily breed bacteria, which poses a potential threat to the quality of breast milk and the health of infants.

[0005] Furthermore, since the valve seat and assembly are designed to be detachable, there are gaps between them, creating cleaning dead spots. When cleaning, it is necessary to completely disassemble them and use tools such as small brushes for careful cleaning. This process is not only time-consuming and laborious, but also makes it difficult to guarantee the cleaning effect. Residual milk and bacteria can easily affect the next use.

[0006] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0007] Regarding the aforementioned technical problem of cleaning dead zones between the valve seat and assembly part in existing breast pumps, which are usually connected in a detachable manner.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] A novel one-way valve includes a valve seat and a plate-shaped deformable plate. The bottom of the valve seat is provided with a milk inlet communicating with a milk suction channel and an assembly part integrally formed with the valve seat. The milk inlet and the assembly part are arranged adjacent to each other. The plate-shaped deformable plate includes a fixed section and a deformable section connected thereto. The fixed section is connected to the bottom of the milk suction channel, and the deformable section is connected to the assembly part. The deformable section is located below the milk inlet. The deformable section can elastically deform in a direction closer to or farther from the milk inlet to close or open the milk inlet.

[0010] As described above, in a novel one-way valve, the assembly part includes a downwardly extending fixed insertion protrusion, on which a insertion hole corresponding to the deformation section is provided.

[0011] As described above, in a novel one-way valve, the deformable section has locking protrusions on both sides. When the deformable section passes through the insertion hole, each locking protrusion can abut against the side of the fixed insertion protrusion away from the fixed section.

[0012] As described above, in a novel one-way valve, each of the aforementioned locking protrusions is provided with a guide slope that gradually slopes outward from the free end of the deformation section toward the end where the deformation section connects to the fixed section.

[0013] As described above, in a novel one-way valve, the plate-shaped deformation plate and the valve seat are integrally formed or detachably connected.

[0014] As described above, in a novel one-way valve, the cross-sectional shape of the milk outlet is inclined downwards, and the deformable section is inclined downwards from the end connected to the fixed section toward its free end.

[0015] As described above, in a novel one-way valve, the assembly part is integrally formed with the milk outlet, and the assembly part is located on the side of the milk outlet outlet away from the milk suction channel inlet.

[0016] The novel one-way valve described above 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.

[0017] As described above, a novel one-way valve has a sealing member 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 shield and a second sealing groove that can be sealed to the bottom of the negative pressure shield.

[0018] A breast pump comprising a novel one-way valve as described in any of the above.

[0019] The beneficial effects of this utility model are:

[0020] This utility model relates to a novel one-way valve and a breast pump using the same valve, falling within the field of breast pump technology. The novel one-way valve includes a valve seat and a plate-shaped deformation plate. The bottom of the valve seat has a milk inlet communicating with the milk suction channel and an assembly part integrally formed with the valve seat. The milk inlet and the assembly part are arranged adjacent to each other. The plate-shaped deformation plate includes a fixed section and a deformation section connected thereto. The fixed section is connected to the bottom of the milk suction channel, and the deformation section is connected to the assembly part and located below the milk inlet. The deformation section can elastically deform towards or away from the milk inlet to close or open it. The design of the assembly part integrally formed with the valve seat reduces cleaning dead zones, making cleaning easier and more thorough, reducing the risk of milk residue and bacterial growth. Furthermore, the adjacent arrangement of the milk inlet and the assembly part makes the deformation of the deformation section more sensitive, allowing for more precise control of the opening and closing of the milk inlet, thus improving milk flow.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the breast pump of this utility model;

[0023] Figure 2 This is a front view schematic diagram of the breast pump of this utility model;

[0024] Figure 3 for Figure 2 Cross-sectional view along line AA;

[0025] Figure 4 for Figure 3 The marked enlarged schematic diagram;

[0026] Figure 5 This is a schematic diagram of the structure of the milk bowl lid of this utility model;

[0027] Figure 6 This is a bottom view and a partially enlarged view of the milk bowl lid structure of this utility model;

[0028] Figure 7 This is one of the exploded view diagrams of the breast pump of this utility model;

[0029] Figure 8 This is the second exploded view and a partially enlarged view of the breast pump of this utility model. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] like Figures 1 to 8 As shown, a novel one-way valve of this embodiment includes a valve seat 1 and a plate-shaped deformable plate 2. The bottom of the valve seat 1 is provided with a milk inlet 11 communicating with a milk suction channel 3 and an assembly part 12 integrally formed with the valve seat 1. The milk inlet 11 and the assembly part 12 are arranged adjacent to each other. The plate-shaped deformable plate 2 includes a fixed section 21 and a deformable section 22 connected thereto. The fixed section 21 is connected to the bottom of the milk suction channel 3. The deformable section 22 is connected to the assembly part 12 and is located below the milk inlet 11. The deformable section 22 can elastically deform in the direction of approaching or moving away from the milk inlet 11 to close or open the milk inlet 11.

[0034] Specifically, the design of the assembly part 12, which is integrally formed with the valve seat 1, reduces the cleaning dead corners between the two, making it easier for users to clean, making cleaning easier and more thorough, and reducing the risk of milk residue and bacterial growth.

[0035] Furthermore, the design of the milk outlet 11 and the assembly part 12 being arranged adjacent to each other makes the deformation section 22 more sensitive, the opening and closing control of the milk outlet 11 more precise, and improves the milk output effect.

[0036] Specifically, under the action of the suction bowl 5, a negative pressure is formed in the milk suction channel 3 to draw out milk. Furthermore, due to the negative pressure in the milk suction channel 3, the deformable section 22 on the fixed section 21 is kept in a closed state against the milk outlet 11.

[0037] When the air pressure in the milk suction channel 3 returns to atmospheric pressure, under the weight of the milk and the air pressure of the milk suction tube 12, the deformable section 22 on the fixed section 21 elastically deforms away from the milk outlet 11 to open the milk outlet 11 and allow the milk to be discharged from the milk outlet 11.

[0038] The new one-way valve has a simple structure and few parts, and can be integrally molded by injection molding or other methods, which reduces manufacturing difficulty and helps to reduce costs.

[0039] The new one-way valve can be applied to various types of breast pumps, such as manual breast pumps and electric breast pumps, and has good versatility.

[0040] like Figures 1 to 8 As shown, the assembly part 12 of this embodiment includes a downwardly extending fixed insertion protrusion, on which a insertion hole 121 corresponding to the deformable section 22 is provided.

[0041] Specifically, during assembly, the deformable section 22 is bent and inserted into the insertion hole 121 to form a stable connection. The deformable section 22 can elastically deform on the fixed insertion protrusion to open or block the milk outlet 11. The insertion hole 121 plays a limiting and guiding role, ensuring that the deformation direction of the deformable section 22 is correct, effectively controlling the opening and closing of the milk outlet 11, and preventing the deformable section 22 from shifting or falling off.

[0042] Furthermore, the plug-in structure facilitates the assembly of the deformable section 22 and the assembly part 12. Simply insert the deformable section 22 into the plug-in hole 121. The operation is simple and efficient.

[0043] Furthermore, the plug-in connection distributes stress more evenly than the direct connection, reducing stress concentration at the connection between the deformation section 22 and the assembly part 12, reducing the risk of material fatigue and fracture, and extending the service life of the check valve.

[0044] Furthermore, the plug-in structure facilitates the disassembly of the deformable section 22 and the assembly part 12, allowing them to be separated during cleaning for a more thorough cleaning of each part, further reducing the risk of milk residue and bacterial growth.

[0045] like Figures 1 to 8As shown, the deformable segment 22 in this embodiment is provided with locking protrusions 221 on both sides. When the deformable segment 22 passes through the insertion hole 121 and each locking protrusion 221 completely passes through the insertion hole 121, the locking protrusion 221 reaches the side of the fixed insertion protrusion away from the fixed segment 21 and can abut against the side of the fixed insertion protrusion away from the fixed segment 21, thereby locking the position of the deformable segment 22, ensuring that the connection between the deformable segment 22 and the assembly part 12 is more stable, and preventing movement or detachment caused by vibration or tension during the milk suction process.

[0046] Furthermore, this design makes the assembly process faster and more convenient. The locking protrusion 221 provides a clear indication of the end of assembly, allowing the operator to easily determine whether the deformation section 22 is correctly fixed.

[0047] Furthermore, the presence of the locking protrusion 221 ensures that the deformation section 22 remains in the correct position even after repeated use and elastic deformation, increasing the reliability of the check valve during long-term use.

[0048] Because the connection between the deformation section 22 and the assembly section 12 is more secure, there is no need to worry about the deformation section 22 accidentally falling off during cleaning and maintenance, making the maintenance and cleaning process safer and more convenient.

[0049] Furthermore, the locking protrusion 221 is locked in a fixed position, reducing the relative movement between the deformation section 22 and the assembly part 12, and reducing wear that may occur during long-term use.

[0050] like Figures 1 to 8 As shown, each of the positioning protrusions 221 in this embodiment is provided with a guide slope 222 that gradually slopes outward from the free end of the deformation section 22 toward the end where the deformation section 22 is connected to the fixed section 21.

[0051] When the deformable segment 22 is inserted into the insertion hole 121 of the assembly part 12, the guide slope 222 first contacts the edge of the insertion hole 121. Due to the inclined design of the guide slope 222, it helps the locking protrusion 221 to slide more easily over the edge of the insertion hole 121, reducing the insertion resistance. After the portion of the deformable segment 22 with the locking protrusion 221 has completely passed through the insertion hole 121, the locking protrusion 221 uses its larger outer portion to lock in the other end of the insertion hole 121, thereby preventing the deformable segment 22 from falling off.

[0052] Preferably, the presence of the guide slope 222 reduces the resistance and friction when the locking protrusion 221 passes through the insertion hole 121, making the assembly process smoother and reducing the risk of damage during assembly. In addition, the guide slope 222 provides a natural guiding mechanism, making it easier for the locking protrusion 221 to be positioned and pass through the insertion hole 121, thereby improving assembly efficiency and success rate.

[0053] like Figures 1 to 8 As shown, in this embodiment, the plate-shaped deformation plate 2 and the valve seat 1 are integrally formed or detachably connected, and a suitable design can be selected according to actual needs.

[0054] Preferably, in this embodiment, the plate-shaped deformable plate 2 and the valve seat 1 are integrally formed. One end of the fixed section 21 is connected to the valve seat 1, and the other end is connected to the deformable section 22. That is, in the initial unassembled state, the plate-shaped deformable plate 2 is vertically downward at the bottom of the valve seat 1. When assembling, the deformable section 22 needs to be bent on the fixed section 21 so that the free end of the deformable section 22 is aligned with the insertion hole 121. Then, the deformable section 22 is passed through the insertion hole 121. The guide slope 222 can ensure that the locking protrusion 221 passes through the insertion hole 121 and is locked with the fixed insertion protrusion through its back side, so as to realize the positioning and assembly of the deformable section 22 on the fixed insertion protrusion. It can also ensure that the deformable section 22 will not shift its position during deformation, and ensure that the deformable section 22 can accurately close or open the milk outlet 11.

[0055] Preferably, there is a certain distance between the fixed segment 21 and the fixed insertion protrusion to ensure that there is sufficient deformation space between the fixed segment 21 and the deformable segment 22, and to ensure that the deformable segment 22 bends on the fixed segment 21, so that the deformable segment 22 can be inserted into the fixed insertion protrusion.

[0056] like Figures 1 to 8 As shown, the cross-sectional shape of the milk outlet 11 in this embodiment is inclined downwards. The deformable section 22 is inclined downwards from the end connected to the fixed section 21 toward its free end. With this design, the deformable section 22 can be better pre-pressed at the milk outlet 11 to achieve internal sealing. When the milk drips downwards, the deformable section 22 opens due to the weight of the milk. After all the milk has flowed out, the deformable section 22 closes with the milk outlet 11.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] like Figures 1 to 8 As shown, in this embodiment, the assembly part 12 and the milk outlet 11 are integrally formed, reducing the cleaning dead corners between them, making it easier for users to clean, making cleaning easier and more thorough, and reducing the risk of milk residue and bacterial growth.

[0064] This design further shortens the distance between the assembly section 12 and the milk outlet 11, further improves the deformation sensitivity of the deformation section 22, and makes the opening and closing control of the milk outlet 11 more precise, thus improving the milk discharge effect.

[0065] Furthermore, the assembly part 12 is located on the side away from the inlet end of the milk outlet 11 and the inlet end of the milk suction channel 3. This ensures that the assembly part 12 will not block the outlet end of the milk outlet 11, while bringing the assembly part 12 closer to the deformation section 22, thus ensuring precise assembly of the two.

[0066] like Figures 1 to 8 As shown, the novel 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] like Figures 1 to 8 As shown, the breast pumping channel 3 in this embodiment is provided with a sealing member on the outside. 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] Preferably, the novel one-way valve structure of this embodiment further 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] like Figures 1 to 8 As shown, a breast pump according to this embodiment includes a novel one-way valve as described in any of the above claims.

[0091] 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.

[0092] Specifically, the design of the assembly part 12, which is integrally formed with the valve seat 1, reduces the cleaning dead corners between the two, making it easier for users to clean, making cleaning easier and more thorough, and reducing the risk of milk residue and bacterial growth.

[0093] Furthermore, the design of the milk outlet 11 and the assembly part 12 being arranged adjacent to each other makes the deformation section 22 more sensitive, the opening and closing control of the milk outlet 11 more precise, and improves the milk output effect.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] You can choose the appropriate design based on your actual needs.

[0099] 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 new type of check valve characterized in that, The device includes a valve seat (1) and a plate-shaped deformation plate (2). The bottom of the valve seat (1) is provided with a milk outlet (11) communicating with the milk suction channel (3) and an assembly part (12) integrally formed with the valve seat (1). The milk outlet (11) and the assembly part (12) are arranged adjacent to each other. The plate-shaped deformation plate (2) includes a fixed section (21) and a deformation section (22) connected thereto. The fixed section (21) is connected to the bottom of the milk suction channel (3). The deformation section (22) is connected to the assembly part (12) and 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 novel check valve according to claim 1, characterized in that, The assembly part (12) includes a downwardly extending fixed insertion protrusion, on which a insertion hole (121) corresponding to the deformation section (22) is provided.

3. A new type of check valve according to claim 2, characterized in that, The deformable section (22) has locking protrusions (221) on both sides. When the deformable section (22) passes through the insertion hole (121), each locking protrusion (221) can abut against the side of the fixed insertion protrusion away from the fixed section (21).

4. A new type of check valve according to claim 3, characterized in that, Each of the aforementioned locking protrusions (221) is provided with a guide slope (222) that gradually slopes outward from the free end of the deformation section (22) toward the end where the deformation section (22) connects to the fixed section (21).

5. A new type of check valve according to claim 1, characterized in that, The plate-shaped deformation plate (2) and the valve seat (1) are integrally formed or detachably connected.

6. A new type of check valve according to claim 1, characterized in that, The cross-sectional shape of the milk outlet (11) is inclined downward, and the deformable segment (22) is inclined downward from the end connected to the fixed segment (21) toward its free end.

7. A new type of check valve according to claim 1, characterized in that, The assembly part (12) is integrally formed with the milk outlet (11), and the assembly part (12) is located on the side of the milk outlet (11) away from the milk suction channel (3).

8. A new type of check valve according to claim 1, characterized in that, The novel 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).

9. A new type of check valve according to claim 1, characterized in that, The breast pumping channel (3) is provided with a sealing member on the outside. 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).

10. A breast pump, characterized in that Including the novel check valve as described in any one of claims 1 to 9.

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