Breast pump diaphragm structure and breast pump

Abstract

The utility model relates to the field of breast pumps, in particular to a breast pump diaphragm structure and a breast pump. The diaphragm structure of the breast pump comprises a bra and a milk bowl connected with the bra, the bra is provided with a milk sucking channel, the milk bowl is provided with a negative pressure cavity, the diaphragm structure of the breast pump further comprises a flexible diaphragm wrapping the outer side of the milk sucking channel, the flexible diaphragm is connected to the negative pressure cavity in a sealed mode, and when the negative pressure cavity is in a normal pressure state, the flexible diaphragm is connected with the negative pressure cavity. The flexible diaphragm is attached to the outer wall of the milk sucking channel or forms a deformation cavity with the outer wall of the milk sucking channel in an enclosing mode, the deformation cavity is communicated with the milk sucking channel, and when the breast is attached to the bra and the negative pressure cavity is in a negative pressure state, the flexible diaphragm deforms to form or enlarge the deformation cavity, so that negative pressure is formed in the milk sucking channel. According to the breast pump, the number of supporting pieces used for fixing the flexible diaphragm is reduced, the installation structure of the flexible diaphragm is simplified, the overall size of the breast pump is effectively reduced, the production cost is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of breast pumps, specifically a breast pump diaphragm structure and a breast pump. Background Technology

[0002] In breast pumps, the diaphragm is a key component, primarily used to separate the milk suction channel from the air extraction space. Through its own deformation, it creates negative pressure in the milk suction channel, allowing milk to be smoothly drawn in. Existing breast pumps typically require a diaphragm support to secure the diaphragm, but this presents certain problems in practical application.

[0003] First, because an additional diaphragm support is needed to secure the diaphragm, a larger installation space is required inside the breast pump to accommodate the diaphragm and support, thus increasing the overall size of the pump and making it difficult to meet users' demands for portability and aesthetics. Furthermore, this structure increases the number of internal components, making the overall structure more complex, which not only increases production costs but also assembly difficulty.

[0004] Therefore, it is necessary to develop a breast pump diaphragm structure and a breast pump to simplify the installation structure of the diaphragm. Utility Model Content

[0005] To address the issues of large size and complex structure of breast pumps caused by the diaphragm support component in the prior art, the technical solution adopted by this utility model is as follows:

[0006] A breast pump diaphragm structure includes a bra and a milk bowl connected to the bra. The bra has a milk suction channel, and the milk bowl has a negative pressure chamber. The structure also includes a flexible diaphragm wrapped around the outside of the milk suction channel. The flexible diaphragm is sealed to the negative pressure chamber. When the negative pressure chamber is under normal pressure, the flexible diaphragm adheres to the outer wall of the milk suction channel or forms a deformation cavity with the outer wall of the milk suction channel. The deformation cavity is connected to the milk suction channel. When the breast is against the bra and the negative pressure chamber is under negative pressure, the flexible diaphragm deforms to form or enlarge the deformation cavity, thereby creating negative pressure in the milk suction channel.

[0007] Furthermore, in the breast pump diaphragm structure described in the solution, the flexible diaphragm is provided with an opening for the breast pumping channel to extend into, and a sealing end provided along the opening. The outer wall of the breast pumping channel is provided with a sealing and fixing end provided circumferentially and used for sealing connection with the sealing end. The flexible diaphragm is detachably connected to the breast pumping channel.

[0008] Furthermore, in the breast pump diaphragm structure described in the solution, the milk bowl is further provided with a negative pressure chamber shell, and the flexible diaphragm and the negative pressure chamber shell form the negative pressure chamber.

[0009] Furthermore, in the breast pump diaphragm structure described in the solution, the negative pressure chamber shell is provided with a mating end, the flexible diaphragm is provided with a sealing end, the sealing end is provided with a sealing groove for the mating end to extend into and seal and connect, and the flexible diaphragm is detachably connected to the negative pressure chamber shell.

[0010] Furthermore, in the breast pump diaphragm structure described in the solution, the sealing end is provided with a plurality of protruding sealing portions, and the sealing fixing end is provided with a first abutting end and a second abutting end respectively abutting with the sealing portions.

[0011] Furthermore, in the breast pump diaphragm structure described in the solution, the flexible diaphragm is provided with protrusions on its periphery, and the inner side of the protrusions and the outer wall of the milk suction channel form a deformation groove.

[0012] Furthermore, in the breast pump diaphragm structure described in the solution, the protrusions are arranged along the axial or circumferential direction of the flexible diaphragm, and the protrusions are provided in multiple portions.

[0013] Furthermore, in the breast pump diaphragm structure described in the solution, the breast pump channel is provided with a milk outlet and a through hole communicating with the flexible diaphragm, and at least one through hole is provided, with at least one through hole located on the side away from the milk outlet.

[0014] Furthermore, the breast pump includes a breast pump diaphragm structure, and the milk bowl also includes a milk storage chamber communicating with the milk outlet.

[0015] Furthermore, the breast pump described in the solution also includes a one-way valve assembly, which is detachably or integrally formed and connected to the milk outlet.

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

[0017] This invention directly places a flexible diaphragm on the outside of the milk suction channel to form a wrapping structure. When negative pressure is generated in the negative pressure chamber, the flexible diaphragm can deform, thereby forming a deformation cavity between the flexible diaphragm and the outer wall of the milk suction channel, or enlarging an existing deformation cavity, thereby reducing the air pressure in the milk suction channel and achieving the negative pressure effect required for milk suction. This simplifies the installation structure of the flexible diaphragm by reducing the number of support components used to fix it, effectively reducing the overall size of the breast pump, lowering production costs, and improving assembly efficiency.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the appearance of the breast pump of this utility model.

[0020] Figure 2 This is a cross-sectional schematic diagram of the diaphragm structure of the breast pump of this utility model.

[0021] Figure 3 This is an enlarged cross-sectional view of part I of the diaphragm structure of the breast pump of this utility model.

[0022] Figure 4 This is an exploded cross-sectional view of the diaphragm structure of the breast pump of this utility model.

[0023] Figure 5 This is an enlarged cross-sectional view of section II of the diaphragm structure of the breast pump of this utility model.

[0024] Figure 6 This is a schematic diagram of the breast shield and flexible diaphragm structure of the breast pump of this utility model.

[0025] Figure 7 This is a cross-sectional schematic diagram of the breast shield and flexible diaphragm structure of the breast pump of this utility model.

[0026] Figure 8 This is an enlarged schematic diagram of the bra and flexible diaphragm section III of the breast pump diaphragm structure of this utility model.

[0027] Figure 9 This is a schematic diagram of the breast shield and flexible diaphragm structure of the breast pump of this utility model.

[0028] Figure 10 This is a cross-sectional schematic diagram of the breast shield and flexible diaphragm structure of the breast pump of this utility model.

[0029] Figure 11 This is an enlarged schematic diagram of section IV of the breast shield and flexible diaphragm structure 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] Example 1:

[0034] Please see Figure 1-11 This utility model proposes a breast pump diaphragm structure, including a bra 1 and a milk bowl 2 connected to the bra 1. The bra 1 is provided with a milk suction channel 11, and the milk bowl 2 is provided with a negative pressure chamber 21. It also includes a flexible diaphragm 3 wrapped around the outside of the milk suction channel 11. The flexible diaphragm 3 is sealed to the negative pressure chamber 21. When the negative pressure chamber 21 is under normal pressure, the flexible diaphragm 3 adheres to the outer wall of the milk suction channel 11 or forms a deformation cavity 31 with the outer wall of the milk suction channel 11. The deformation cavity 31 is connected to the milk suction channel 11. When the breast is in contact with the bra 1 and the negative pressure chamber 21 is under negative pressure, the flexible diaphragm 3 deforms to form or enlarge the deformation cavity 31, so that the milk suction channel 11 forms negative pressure.

[0035] This invention directly places the flexible diaphragm 3 on the outside of the milk suction channel 11 and forms a wrapping structure. When the negative pressure chamber 21 generates negative pressure, the flexible diaphragm 3 can deform, thereby forming a deformation cavity 31 between the flexible diaphragm 3 and the outer wall of the milk suction channel 11, or enlarging the existing deformation cavity 31, thereby reducing the air pressure in the milk suction channel 11 and achieving the negative pressure effect required for milk suction. This simplifies the installation structure of the flexible diaphragm 3 by reducing the support components used to fix the flexible diaphragm 3, which not only effectively reduces the overall volume of the breast pump, but also reduces production costs and improves assembly efficiency.

[0036] In the existing technology, the breast pump fixes the flexible diaphragm 3 by setting a support structure to ensure that the flexible diaphragm 3 can work stably under negative pressure. Although this structure can achieve negative pressure control of the milk suction channel 11 to a certain extent, it has the problem of complex internal structure and a large number of parts due to the need to rely on additional support components to maintain the position and sealing of the flexible diaphragm 3. At the same time, a large installation space needs to be reserved inside the breast pump to install the support components, which not only increases the overall size of the breast pump, but also hinders the lightweight and aesthetic design of the breast pump. In addition, this setting will also lead to a lot of assembly process steps for the breast pump, and the production cost will increase accordingly.

[0037] This invention directly places the flexible diaphragm 3 on the outside of the milk suction channel 11, wrapping the flexible diaphragm 3 around the outside of the milk suction channel 11. Simultaneously, the connection between the flexible diaphragm 3 and the outer wall of the milk suction channel 11, as well as the connection with the negative pressure chamber 21, is sealed, forming a deformable sealing structure. In this embodiment, when the negative pressure chamber 21 is in a non-negative pressure state, the flexible diaphragm 3 naturally adheres to the outer wall of the milk suction channel 11. When the breast is against the bra 1, forming a sealed space in the milk suction channel 11, the negative pressure chamber 21 generates negative pressure. At this time, the flexible diaphragm 3 deforms towards the negative pressure chamber 21 due to the pressure difference, causing a portion of the flexible diaphragm 3 adhering to the outer wall of the milk suction channel 11 to separate from the outer wall. This forms a deformation cavity 31 between the flexible diaphragm 3 and the outer wall of the milk suction channel 11. Simultaneously, the deformation cavity 31 can also... The elastic range increases with the increase of the negative pressure in the negative pressure chamber 21, thereby reducing the air pressure in the milk suction channel 11 and forming the negative pressure environment required for milk suction. This setting effectively simplifies the installation structure of the flexible diaphragm 3. Since the components used to fix and support the flexible diaphragm 3 in the traditional structure are eliminated, the internal space of the breast pump can be saved, and a more compact setting can be achieved, thereby reducing the overall size of the breast pump and improving its aesthetics and portability. Furthermore, this setting can also effectively reduce the steps in the assembly process and reduce production costs. Furthermore, in some embodiments, when the negative pressure chamber 21 is in a non-negative pressure state, the flexible diaphragm 3 naturally wraps around the outside of the milk suction channel 11 and forms an initial deformation cavity 31 between it and the outer wall of the milk suction channel 11. When the negative pressure chamber 21 generates negative pressure, the deformation cavity 31 will increase accordingly.

[0038] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the flexible diaphragm 3 is provided with an opening 32 for the breast pumping channel 11 to extend into, and a sealing end 33 provided along the opening 32. The outer wall of the breast pumping channel 11 is provided with a sealing and fixing end 12 provided circumferentially and used for sealing connection with the sealing end 33. The flexible diaphragm 3 is detachably connected to the breast pumping channel 11.

[0039] This invention provides an opening 32 on the flexible diaphragm 3 for the milk suction channel 11 to extend into, and a sealing end 33 along the opening 32. A sealing and fixing end 12 is provided on the outer wall of the milk suction channel 11 for sealing connection with the sealing end 33. This not only ensures the sealing between the flexible diaphragm 3 and the milk suction channel 11 and guarantees the negative pressure effect during milk suction, but also realizes the detachable connection between the flexible diaphragm 3 and the milk suction channel 11, making it convenient for users to replace or disassemble the flexible diaphragm 3 for cleaning.

[0040] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the milk bowl 2 is further provided with a negative pressure chamber shell 22, and the flexible diaphragm 3 and the negative pressure chamber shell 22 form the negative pressure chamber 21.

[0041] This invention features a negative pressure chamber shell 22 in the milk bowl 2, where a flexible diaphragm 3 and the shell 22 together form a negative pressure chamber 21 for generating and containing negative pressure. This design fully utilizes the sealing and deformation characteristics of the flexible diaphragm 3, allowing it to form a relatively enclosed space with the shell 22. This enables the breast pump to generate and maintain a stable negative pressure effect during operation. Furthermore, the negative pressure chamber 21, formed by the direct enclosure of the flexible diaphragm 3 and the shell 22, eliminates the need for a support component to fix the flexible diaphragm 3 in traditional structures, simplifying the overall structure. It also makes the internal space layout of the breast pump more compact, effectively reducing the overall size of the breast pump and improving portability. Moreover, the negative pressure chamber shell 22 provides a certain degree of limitation and protection for the flexible diaphragm 3, preventing excessive deformation or displacement in a negative pressure environment, further enhancing the reliability and durability of the breast pump.

[0042] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the negative pressure chamber shell 22 is provided with a mating end 221, the flexible diaphragm 3 is provided with a sealing end 33, the sealing end 33 is provided with a sealing groove 331 for the mating end 221 to extend into and seal and connect, and the flexible diaphragm 3 is detachably connected to the negative pressure chamber shell 22.

[0043] In this invention, the sealing end 33 is provided with a sealing groove 331 into which the mating end 221 extends and is sealedly connected with the mating end 221, so that the flexible diaphragm 3 and the negative pressure chamber shell 22 form a sealed negative pressure chamber 21, ensuring the sealing performance of the negative pressure chamber 21 and ensuring the stability of the negative pressure during milk expression; furthermore, this setting also enables the flexible diaphragm 3 to be detachably connected to the negative pressure chamber shell 22, making it convenient for users to replace or clean the flexible diaphragm 3, thus improving the hygiene and ease of use of the product.

[0044] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the sealing end 33 is provided with a plurality of protruding sealing portions 332, and the sealing fixing end 12 is provided with a first abutting end 121 and a second abutting end 122 respectively abutting against the sealing portions 332.

[0045] In this utility model, the sealing end 33 is provided with multiple protruding sealing portions 332, and the sealing and fixing end 12 is provided with a first abutting end 121 and a second abutting end 122 that respectively abut against the sealing portions 332. In this embodiment, the first abutting end 121 and the second abutting end 122 are respectively tightly abutted against the two sealing portions 332 to form a multi-seal structure, which improves the sealing reliability between the flexible diaphragm 3 and the milk suction channel 11, effectively preventing air leakage in the deformation cavity 31 during milk suction, thereby ensuring the stability of the negative pressure environment in the milk suction channel 11. Furthermore, the cross-section of the sealing and fixing end 12 is L-shaped, that is, the first abutting end 121 and the second abutting end 122 form an L-shaped structure. This setting allows the sealing end 33 to be clamped and fixed by the first abutting end 121 and the outer wall of the milk suction channel 11, thereby enhancing the connection stability between the sealing end 33 and the sealing and fixing end 12.

[0046] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the flexible diaphragm 3 is provided with protrusions 34 on its periphery, and the inner side of the protrusions 34 and the outer wall of the milk suction channel 11 form deformation grooves 35.

[0047] In this invention, the flexible diaphragm 3 has protrusions 34 on its periphery. This not only strengthens the supporting force of the flexible diaphragm 3 and improves its structural stability under non-negative pressure, but also enhances the resilience of the flexible diaphragm 3. Furthermore, a deformation groove 35 is formed between the protrusions 34 and the outer wall of the milk suction channel 11. When negative pressure is applied, this not only provides additional deformation space for the flexible diaphragm 3, but also optimizes the gas flow path, allowing the flexible diaphragm 3 to deform more smoothly and uniformly, thereby enhancing the deformation capacity of the flexible diaphragm 3 under negative pressure. In addition, this design also helps to reduce material fatigue or damage caused by local stress concentration, thereby extending the service life of the flexible diaphragm 3.

[0048] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the protrusions 34 are arranged along the axial or circumferential direction of the flexible diaphragm 3, and the protrusions 34 are provided in multiple ways.

[0049] In this embodiment, multiple protrusions 34 are respectively arranged along the axial direction of the flexible diaphragm 3, so that the flexible diaphragm 3 obtains greater support in the axial direction. This helps to promote the deformation and expansion of the flexible diaphragm 3 in the radial direction under negative pressure, thereby more effectively forming a larger deformation cavity 31. This arrangement not only optimizes the negative pressure environment in the milk suction channel 11 and improves the milk suction efficiency, but also ensures that a stable and uniform negative pressure distribution can be maintained during use, reducing the risk of material fatigue or damage caused by local stress concentration. Furthermore, in some other embodiments, multiple protrusions 34 can be continuously arranged around the circumferential direction of the flexible diaphragm 3, and every two protrusions 34 are connected together to form a wavy structure, making it easier for the flexible diaphragm 3 to expand in the axial direction. At the same time, since its wavy cross-section is similar to a spring, it effectively enhances the recovery ability of the flexible diaphragm 3. This arrangement not only improves the durability and elastic recovery performance of the flexible diaphragm 3 after long-term use, but the wavy structure also provides an additional buffer layer, which can quickly help the flexible diaphragm 3 return to its original shape after the negative pressure is released, ensuring the consistency and reliability of each milk suction operation.

[0050] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the breast pump channel 11 is further provided with a milk outlet 13 and a through hole 111 communicating with the flexible diaphragm 3, wherein at least one through hole 111 is provided, and at least one through hole 111 is provided on the side away from the milk outlet 13.

[0051] This invention provides a milk outlet 13 and a through hole 111 communicating with a flexible diaphragm 3 on the milk suction channel 11. In this embodiment, there is one through hole 111, which is located on the side away from the milk outlet 13. This arrangement allows air in the milk suction channel 11 to quickly enter the deformation cavity 31 through the through hole 111 when the deformation cavity 31 expands, thereby effectively reducing the air pressure in the milk suction channel 11 and creating the negative pressure environment required for milk suction. Furthermore, by setting the through hole 111 on the side away from the milk outlet 13, the risk of milk entering the deformation cavity 31 through the through hole 111 during milk suction is avoided. In other embodiments, multiple through holes 111 may also be provided.

[0052] Furthermore, such as Figure 1-11 The diagram shows a breast pump diaphragm structure, wherein the flexible diaphragm 3 is made of an elastic material.

[0053] In this invention, the flexible diaphragm 3 is made of an elastic material, while in this embodiment, the flexible diaphragm 3 is made of silicone. This design gives the flexible diaphragm 3 excellent flexibility and resilience, allowing it to deform rapidly when negative pressure is generated in the negative pressure chamber 21 to form or expand the deformation chamber 31, thereby effectively reducing the air pressure in the milk suction channel 11 and achieving the required negative pressure environment. Furthermore, since silicone material has good recovery properties, the flexible diaphragm 3 can quickly return to its original position after the negative pressure in the negative pressure chamber 21 is eliminated, ensuring the continuity and reliability of the breast pump's operation.

[0054] Example 2:

[0055] Furthermore, such as Figure 1-11 The breast pump shown includes a breast pump diaphragm structure, and the milk bowl 2 also includes a milk storage chamber 5 communicating with the milk outlet 13.

[0056] This invention applies a diaphragm structure to a breast pump, which helps simplify the structure of the breast pump, making the overall breast pump more compact and improving assembly efficiency. Furthermore, the milk bowl 2 is also provided with a milk storage chamber 5 that communicates with the milk outlet 13, so that the expressed milk can flow directly into the milk storage chamber 5 for storage through the milk outlet 13 without the need for an additional milk storage container. This reduces the number of external parts of the breast pump, improves the overall aesthetics and portability, and avoids problems such as air leakage and contamination caused by multiple connections in traditional breast pumps.

[0057] Furthermore, such as Figure 1-11 The breast pump shown also includes a one-way valve assembly 4, which is detachably or integrally connected to the milk outlet 13.

[0058] This invention, by setting a one-way valve assembly 4 at the milk outlet 13, ensures that milk can only flow out from the breast shield 1 and will not backflow, thereby effectively preventing milk contamination and the risk of secondary aspiration, providing users with a safer and more hygienic usage environment. Furthermore, in this embodiment, the one-way valve assembly 4 is detachably connected to the milk outlet 13. This not only facilitates user replacement or cleaning of the one-way valve assembly 4 as needed, improving product maintenance convenience, but also allows users to more easily check and clean potential blockages. Furthermore, the detachable design allows users to select different types of one-way valve assemblies 4 for different usage scenarios, enhancing the product's adaptability and flexibility, and meeting diverse user needs. Furthermore, in some other embodiments, the one-way valve assembly 4 can also be integrally formed and connected to the milk outlet 13. This design simplifies the production process, reduces assembly steps, lowers manufacturing costs, and improves the overall structural stability and sealing performance. Furthermore, the integrally formed design also avoids the risk of leakage due to loosening or aging at the connection point, further ensuring the stability of negative pressure during milk expression.

[0059] 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 breast pump diaphragm structure, comprising a breast shield (1) and a milk bowl (2) connected to the breast shield (1), wherein the breast shield (1) is provided with a milk suction channel (11) and the milk bowl (2) is provided with a negative pressure chamber (21), characterized in that: It also includes a flexible diaphragm (3) wrapped around the outside of the milk suction channel (11). The flexible diaphragm (3) is sealed to the negative pressure chamber (21). When the negative pressure chamber (21) is under normal pressure, the flexible diaphragm (3) adheres to the outer wall of the milk suction channel (11) or forms a deformation cavity (31) with the outer wall of the milk suction channel (11). The deformation cavity (31) is connected to the milk suction channel (11). When the breast is attached to the bra (1) and the negative pressure chamber (21) is under negative pressure, the flexible diaphragm (3) deforms to form or enlarge the deformation cavity (31) so that the milk suction channel (11) forms negative pressure.

2. The breast pump diaphragm structure according to claim 1, characterized in that: The flexible diaphragm (3) is also provided with an opening (32) for the milk suction channel (11) to extend into, and a sealing end (33) provided along the opening (32). The outer wall of the milk suction channel (11) is provided with a sealing and fixing end (12) arranged circumferentially and used for sealing connection with the sealing end (33). The flexible diaphragm (3) and the milk suction channel (11) are detachably connected.

3. The breast pump diaphragm structure according to claim 1, characterized in that: The milk bowl (2) is also provided with a negative pressure chamber shell (22), and the flexible diaphragm (3) and the negative pressure chamber shell (22) form the negative pressure chamber (21).

4. The breast pump diaphragm structure according to claim 3, characterized in that: The negative pressure chamber shell (22) is provided with a mating end (221), the flexible diaphragm (3) is provided with a sealing end (33), the sealing end (33) is provided with a sealing groove (331) for the mating end (221) to extend into and seal and connect, and the flexible diaphragm (3) is detachably connected to the negative pressure chamber shell (22).

5. A breast pump diaphragm structure according to claim 2, characterized in that: The sealing end (33) is also provided with a plurality of protruding sealing portions (332), and the sealing fixing end (12) is provided with a first abutting end (121) and a second abutting end (122) respectively abutting against the sealing portions (332).

6. The diaphragm structure of a breast pump according to claim 1, characterized in that: The flexible diaphragm (3) is also provided with a protrusion (34) on its periphery, and the inner side of the protrusion (34) and the outer wall of the milk suction channel (11) form a deformation groove (35).

7. A breast pump diaphragm structure according to claim 6, characterized in that: The protrusions (34) are arranged along the axial or circumferential direction of the flexible diaphragm (3), and there are multiple protrusions (34).

8. The diaphragm structure of a breast pump according to claim 1, characterized in that: The milk suction channel (11) is also provided with a milk outlet (13) and a through hole (111) communicating with the flexible diaphragm (3). There is at least one through hole (111), and at least one through hole (111) is provided on the side away from the milk outlet (13).

9. A breast pump, characterized in that: The breast pump diaphragm structure according to any one of claims 1-8 includes a milk bowl (2) that further includes a milk storage chamber (5) communicating with the milk outlet (13).

10. The breast pump according to claim 9, characterized in that: It also includes a one-way valve assembly (4), which is detachably or integrally connected to the milk outlet (13).

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