Breast pump

Abstract

This utility model discloses a breast pump, relating to the field of maternal and infant product technology. The breast pump includes a breast shield, a main unit, a milk storage container, and a suction diaphragm. The breast shield forms a milk suction channel and communicates with the milk storage container. The main unit includes a negative pressure pump assembly. The suction diaphragm is disposed between the main unit and the milk suction channel, and is sealed to both the main unit and the breast shield. The suction diaphragm is firmly connected to the main unit, and the strength of this connection is greater than the strength of the connection between the suction diaphragm and the breast shield. The suction diaphragm deforms under the action of the negative pressure pump assembly, creating negative pressure within the milk suction channel. Because the suction diaphragm of this utility model has a stronger connection force with the main unit, when the user needs to separate the breast shield for cleaning, the suction diaphragm remains on the main unit side, maintaining the seal between the main unit and the milk storage container. This prevents the negative pressure pump assembly from drawing milk into the main unit while it is not turned off, thus improving the safety of the device.

Description

Technical Field

[0001] This utility model relates to the field of maternal and infant products technology, and in particular to a breast pump. Background Technology

[0002] A breast pump typically consists of several main components, including a breast shield, a suction diaphragm, the main unit, and a milk storage container. During pumping, the negative pressure generated by the negative pressure pump in the main unit causes the suction diaphragm to deform, which in turn creates negative pressure inside the breast shield, drawing milk into the milk storage container.

[0003] In the existing technology, the suction diaphragm is installed on the breast pump shield, and the suction diaphragm is also removed and installed simultaneously when the breast pump shield is removed and installed. This structure improves the sealing and stability of the negative pressure space inside the breast pump shield to a certain extent.

[0004] However, in actual use, when it is necessary to clean the various parts of the breast pump and the breast shield is removed along with the suction diaphragm, if the main unit is not turned off at this time, the breast milk in the milk storage component may be sucked into the main unit by the air pump, causing damage to the main unit and affecting the service life and performance of the breast pump. Utility Model Content

[0005] The main purpose of this invention is to propose a breast pump that aims to solve the problem that, in the prior art, removing the breast shield when the main unit is not turned off will cause breast milk to be sucked into the main unit.

[0006] To achieve the above objectives, the breast pump proposed in this utility model includes:

[0007] The host computer has a negative pressure pump assembly for generating negative pressure;

[0008] A milk storage container is provided with a negative pressure interface for transmitting negative pressure, and the negative pressure interface is in gas communication with the negative pressure component;

[0009] A breast pump shield with a breast pumping channel; a milk storage container detachably connected to the breast pump shield to form a milk storage chamber; and

[0010] Suction diaphragm,

[0011] When the milk storage container is assembled with the breast pump shield, the suction diaphragm is located at the negative pressure interface of the milk storage container and its separable edge is sealed between the milk storage container and the breast pump shield, separating the breast pump into two sides with gas-liquid separation. The suction diaphragm deforms under the negative pressure provided by the negative pressure pump assembly, thereby forming a negative pressure in the breast pump channel.

[0012] The connection between the suction diaphragm and the milk storage container is stronger than the connection between the diaphragm and the breast pump shield.

[0013] So that when the breast pump shield is removed, the suction diaphragm is preferentially retained on the milk storage container.

[0014] In one embodiment of the present invention, the suction diaphragm includes a first locking part, and the milk storage container includes a first locking engagement part. When the first locking part is locked with the first locking engagement part, the suction diaphragm remains sealed at the negative pressure port of the milk storage container.

[0015] In one embodiment of this utility model, the cooperation between the first locking part and the first locking mating part is at least one of magnetic attraction, interference fit, snap-fit, threaded fit, and elastic hook locking.

[0016] In one embodiment of the present invention, the suction diaphragm includes a second locking part, and the breast suction shield includes a second locking engagement part, wherein the second locking part locks with the second locking engagement part.

[0017] In one embodiment of the present invention, the breast pump shield includes a first diaphragm support, which is in gas communication with the breast pump channel; when the milk storage container is assembled with the breast pump shield, the suction diaphragm abuts against the first diaphragm support and is sealed at its edge between the negative pressure port of the milk storage container and the first diaphragm support.

[0018] In one embodiment of this utility model, the suction diaphragm and the milk storage container are interference fit.

[0019] In one embodiment of the present invention, the milk storage container is provided with a second diaphragm support, and the two sides of the suction diaphragm are respectively sleeved on the second diaphragm support and are interference-fitted with it.

[0020] In one embodiment of the present invention, the longitudinal section of the second diaphragm support is stepped, and the suction diaphragm is interference-fitted with it on at least two stepped surfaces.

[0021] In one embodiment of the present invention, the suction diaphragm is formed with an installation groove, and the milk storage container or the breast pump shield is partially embedded in the installation groove and is interference-fitted with the suction diaphragm.

[0022] In one embodiment of the present invention, the suction diaphragm includes a soft rubber component and a hard rubber component, the hard rubber component being arranged around the outer periphery or inner wall of the soft rubber component, and the soft rubber component being used to seal and cooperate with the milk storage container and the breast pump shield.

[0023] In one embodiment of the present invention, the soft rubber part and the hard rubber part are integrally formed, the outer peripheral wall of the soft rubber part forms a limiting groove, and the hard rubber part is partially embedded in the limiting groove.

[0024] In one embodiment of this utility model, the breast shield is provided with a milk outlet, and the milk storage container is directly connected to the milk outlet or indirectly connected through a one-way valve.

[0025] In one embodiment of this utility model, the breast shield is an integrally formed independent three-way component, or a three-way structure formed by assembling multiple components.

[0026] In another embodiment, the breast pump includes:

[0027] The host computer has a negative pressure pump assembly for generating negative pressure and includes a negative pressure interface;

[0028] Breast shield with breast pumping channel;

[0029] A milk storage container, wherein the milk storage container is directly or indirectly in liquid communication with a breast pump shield and is used to store breast milk received by the breast pump shield;

[0030] as well as

[0031] When the breast pump is assembled, the separable edge of the suction diaphragm is sealed between the main unit and the breast shield, separating the breast pump into two sides with gas-liquid separation. The suction diaphragm deforms under the negative pressure provided by the negative pressure pump assembly, thereby creating negative pressure in the breast pump channel.

[0032] The connection between the suction diaphragm and the main unit is stronger than the connection between the diaphragm and the breast shield.

[0033] So that when removing the breast suction shield, the suction diaphragm is preferably retained on the main unit.

[0034] In one embodiment of the present invention, the suction diaphragm includes a first locking part, and the main unit housing includes a first locking engagement part. When the first locking part is locked with the first locking engagement part, the suction diaphragm remains sealed to the main unit housing.

[0035] In one embodiment of this utility model, the cooperation between the first locking part and the first locking mating part is at least one of magnetic attraction, interference fit, snap-fit, threaded fit, and elastic hook locking.

[0036] In one embodiment of this utility model, the suction diaphragm and the main unit are interference fit.

[0037] In one embodiment of the present invention, the suction diaphragm is formed with a mounting groove, and the breast suction shield or the main unit is partially embedded in the mounting groove and is interference-fitted with the suction diaphragm.

[0038] In one embodiment of this utility model, the breast suction shield is provided with a first diaphragm support, the main unit is provided with a second diaphragm support, and the two sides of the suction diaphragm are respectively sleeved on the first diaphragm support and the second diaphragm support and are interference-fitted with them.

[0039] In one embodiment of the present invention, the longitudinal section of the second diaphragm support is stepped, and the suction diaphragm is interference-fitted with it on at least two stepped surfaces.

[0040] In one embodiment of this utility model, the suction diaphragm includes a soft rubber component and a hard rubber component. The hard rubber component is arranged around the outer periphery or inner wall of the soft rubber component, and the soft rubber component is used to seal and cooperate with the main unit and the breast suction shield.

[0041] In one embodiment of the present invention, the soft rubber part and the hard rubber part are integrally formed, the outer peripheral wall of the soft rubber part forms a limiting groove, and the hard rubber part is partially embedded in the limiting groove.

[0042] In one embodiment of this utility model, the connection structure between the suction diaphragm and the main unit is a threaded connection or a snap-fit ​​connection.

[0043] In one embodiment of this utility model, the breast shield is provided with a milk outlet, and the milk storage container is connected to the milk outlet.

[0044] In one embodiment of this utility model, the breast suction shield is provided with a negative pressure hole, and the suction diaphragm is disposed between the main unit and the negative pressure hole to block the negative pressure channel of the main unit.

[0045] In another embodiment, the breast pump includes:

[0046] The host unit includes a negative pressure pump assembly;

[0047] The milk storage container is equipped with a negative pressure port for transmitting negative pressure;

[0048] A breast pump shield, which is connected to the milk storage container and has a breast pumping channel; the breast pump shield and the milk storage container are detachably connected to form a milk storage chamber; and

[0049] A suction diaphragm is provided between the main unit and the milk storage container when the breast pump is assembled, and its separable edge is sealed between the main unit and the milk storage container; thus separating the breast pump into two sides with gas-liquid separation.

[0050] The suction diaphragm can deform under the action of the negative pressure pump assembly to create negative pressure in the milk suction channel;

[0051] The connection between the suction diaphragm and the main unit is stronger than the connection between the diaphragm and the milk storage container;

[0052] When the main unit is disassembled from the milk storage container, the suction diaphragm is preferentially retained on the main unit.

[0053] In one embodiment of the present invention, the suction diaphragm includes a first locking part, and the main unit includes a first locking engagement part. When the first locking part is locked with the first locking engagement part, the suction diaphragm remains sealed to the main unit housing.

[0054] In one embodiment of this utility model, the cooperation between the first locking part and the first locking mating part is at least one of magnetic attraction, interference fit, snap-fit, threaded fit, and elastic hook locking.

[0055] In one embodiment of this utility model, the suction diaphragm and the milk storage container are interference fit.

[0056] The breast pump proposed in this utility model includes a breast shield, a main unit, a milk storage container, and a suction diaphragm. The breast shield forms a milk suction channel and is connected to the milk storage container. The main unit includes a negative pressure pump assembly. The negative pressure generated by the negative pressure pump assembly causes the suction diaphragm to deform, thereby creating a negative pressure in the milk suction channel, so that milk is drawn into the milk storage container through the milk outlet of the milk suction channel.

[0057] This breast pump includes the following three optional implementation methods:

[0058] (I) The suction diaphragm connects the milk storage container to the breast pump shield;

[0059] (II) The suction diaphragm connects the main unit to the breast shield;

[0060] (III) The suction diaphragm connects the main unit and the milk storage container;

[0061] In any of the above embodiments, the suction diaphragm deforms under the action of the negative pressure pump assembly to create negative pressure within the milk suction channel. The connection between the suction diaphragm and the "first component" is stronger than the connection between the suction diaphragm and the "second component," so that when the "second component" is removed, the diaphragm is preferentially retained on the "first component."

[0062] Therefore, when the breast pump shield is removed, the suction diaphragm can be kept on one end of the main unit, thus solving the problem of breast milk flowing back into the main unit when it is not turned off, improving the service life of the main unit and the user experience. Attached Figure Description

[0063] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0064] Figure 1 A schematic diagram of the structure of an embodiment of the breast pump provided by this utility model;

[0065] Figure 2 Exploded view of the breast pump provided by this utility model;

[0066] Figure 3 Left view of the breast pump provided by this utility model;

[0067] Figure 4 for Figure 3 Sectional view along AA;

[0068] Figure 5 for Figure 4 A magnified view of a portion at point B;

[0069] Figure 6 An exploded view of another embodiment of the breast pump provided by this utility model;

[0070] Figure 7 An exploded view of yet another embodiment of the breast pump provided by this utility model.

[0071] Explanation of icon numbers:

[0072] 10. Breast pump shield; 11. Breast pump channel; 12. Negative pressure port; 13. Milk outlet; 14. First diaphragm support; 20. Main unit; 21. Negative pressure pump assembly; 22. Second diaphragm support; 30. Milk storage container; 31. Negative pressure interface; 40. Suction diaphragm; 41. Soft rubber parts; 42. Hard rubber parts; 43. Fitting part; 44. Mounting groove; 50. One-way valve.

[0073] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0074] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0075] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0076] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are 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 with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0077] This utility model proposes a breast pump.

[0078] General structure:

[0079] Combination Figure 1 and Figure 2 As shown, this breast pump includes a breast shield 10, a main unit 20, a milk storage container 30, and a suction diaphragm 40. The breast shield 10 is connected to the milk storage container 30 and has a breast pump channel 11. The main unit 20 includes a negative pressure pump assembly 21. The main unit 20 contains a battery 22, a control circuit board, and the negative pressure pump assembly 21. The negative pressure pump assembly 21 may include an air pump, a circuit board, and an air tube connected to the air pump. The air pump is powered by the battery and controlled by the circuit board, generating adjustable negative pressure. The negative pressure is transmitted to the negative pressure interface 31 of the milk storage container 30 via the built-in air tube or directly.

[0080] The negative pressure pump assembly 21 can directly or indirectly apply negative pressure to the breast pump shield 10 to draw breast milk into the milk storage container 30. Specifically, directly applying negative pressure to the breast pump channel 11 involves the negative pressure pump assembly 21 directly connecting to the breast pump channel 11 via an air tube to generate negative pressure and draw milk into the milk storage container 30. Indirectly applying negative pressure to the breast pump channel 11 involves the negative pressure pump assembly 21 first transmitting negative pressure to a deformable gas-liquid separation component, such as a suction diaphragm 40 or an air bladder, and then indirectly applying negative pressure to the breast pump channel 11 through the vibration or deformation of the suction diaphragm 40 or the air bladder to draw milk into the milk storage container 30.

[0081] The breast pump technical solution of this application is based on a general structure and includes the following three optional implementation methods:

[0082] (I) The suction diaphragm 40 connects the milk storage container 30 and the breast pump shield 10;

[0083] (II) The suction diaphragm 40 connects the main unit 20 and the breast shield 10;

[0084] (III) The suction diaphragm 40 connects the main unit 20 and the milk storage container 30;

[0085] In any of the above embodiments, the suction diaphragm 40 deforms under the action of the negative pressure pump assembly 21 to form a negative pressure in the milk suction channel 11.

[0086] In any of the above embodiments, the connection between the suction diaphragm 40 and the "first component" is stronger than the connection between it and the "second component," so that when the "second component" is disassembled, the diaphragm is preferentially retained on the "first component." Specifically, when the suction diaphragm 40 is connected to the milk storage container 30 and the breast pump shield 10, the first component is the milk storage container 30 and the second component is the breast pump shield 10; when the suction diaphragm 40 is connected to the main unit 20 and the breast pump shield 10, the first component is the main unit 20 and the second component is the breast pump shield 10; and when the suction diaphragm 40 is connected to the main unit 20 and the milk storage container 30, the first component is the main unit 20 and the second component is the milk storage container 30.

[0087] In any of the above embodiments, the suction diaphragm 40 can be implemented in:

[0088] (1) Integrated structure: The breast pump shield 10, the main unit 20 and the milk storage container 30 are integrated, and negative pressure is directly output to the suction diaphragm 40 through the negative pressure interface 31;

[0089] (2) Split structure: The main unit 20 is connected to the negative pressure interface 31 of the milk storage container 30 separately through the air pipe. The suction diaphragm 40 is assembled in the same way as the integrated type. Users only need to insert the quick-connect interface of the air pipe 60 into the main unit 20 and the milk storage container 30 without changing the structure of the suction diaphragm 40.

[0090] Example 1 (Milk storage container 30) Breast shield 10)

[0091] like Figure 2 As shown, in this embodiment, the "first component" is the milk storage container 30, and the "second component" is the breast pump shield 10. A suction diaphragm 40 is fitted between the two components and is detachably sealed to both. The connection between the suction diaphragm 40 and the milk storage container 30 is stronger than the connection between the suction diaphragm 40 and the breast pump shield 10. When the breast pump shield 10 is removed, the suction diaphragm 40 is preferentially retained on the milk storage container 30, thereby preventing breast milk from being sucked into the main unit 20 when it is not turned off, achieving a reverse osmosis effect.

[0092] Example II (Host 20) Breast shield 10)

[0093] like Figure 6 As shown, in this embodiment, the "first component" is the main unit 20, and the "second component" is the breast pump shield 10. A suction diaphragm 40 is fitted between the two components and is detachably and sealed to both. The connection between the suction diaphragm 40 and the main unit 20 is stronger than the connection between the suction diaphragm 40 and the breast pump shield 10. When the breast pump shield 10 is removed, the suction diaphragm 40 is preferentially retained on the main unit 20, thereby preventing breast milk from being sucked into the main unit 20 when it is not turned off, thus achieving a reverse osmosis effect.

[0094] Example III (Host 20) Milk storage container 30)

[0095] like Figure 7 As shown, in this embodiment, the "first component" is the main unit 20, and the "second component" is the milk storage container 30. When the user needs to detach the breast pump shield 10 for cleaning, the applied disassembly force first overcomes the strong connection between the suction diaphragm 40 and the milk storage container 30. Since the connection holding force between the suction diaphragm 40 and the main unit 20 is greater, the suction diaphragm 40 remains on the side of the main unit 20, maintaining the seal between the main unit 20 and the milk storage container 30. This design ensures that the breast pump shield 10 can be disassembled independently, while preventing the milk storage container 30 from communicating with the main unit 20, thus preventing the negative pressure pump assembly 21 from drawing milk into the main unit 20 without being turned off, and also achieving a reverse osmosis effect.

[0096] Furthermore, this application incorporates a design that addresses the difference in connection force between the suction diaphragm 40 and the first and second components. This design not only achieves a reverse osmosis effect but also improves the reliability of the breast pump components when the user assembles them themselves. Because the connection force between the suction diaphragm 40 and the first component is greater, the suction diaphragm 40 can preferentially maintain a more stable connection with the main unit 20 or components connected to the main unit 20 during breast pump assembly. This reduces the likelihood of improper assembly of components with the main unit 20 or components connected to the main unit 20 during user assembly, thereby preventing breast milk from flowing into the main unit 20 under the negative pressure of the negative pressure pump assembly 21 during use.

[0097] Optional implementation methods (the following methods AS)

[0098] A: The suction diaphragm 40 includes a first locking part, and the first component includes a first locking engagement part. When the first locking part is locked with the first locking engagement part, the suction diaphragm 40 remains sealed at the negative pressure port 31 of the milk storage container 30.

[0099] The engagement between the first locking part and the first locking mating part can be at least one of the following: magnetic engagement, interference fit, snap-fit, threaded engagement, and elastic hook locking. For example, when the first locking part and the first locking mating part are an interference fit, at least one of the first locking part and the first locking mating part is made of an elastic material. When the first locking part and the first locking mating part are a threaded engagement, one of the first locking part and the first locking mating part has an internal thread, and the other has an external thread. When the first locking part and the first locking mating part are a snap-fit ​​engagement, one of the first locking part and the first locking mating part has a hook, and the other has a groove.

[0100] B: The suction diaphragm 40 includes a second locking part, and the breast shield 10 includes a second locking engagement part, which lock together. The second locking part and the second locking engagement part can be at least one of magnetic engagement, interference fit, or snap-fit ​​engagement. It is understood that the connection force between the second locking part and the second locking engagement part is less than the connection force between the first locking part and the first locking engagement part, so that when the breast shield 10 is removed, the suction diaphragm 40 is preferentially retained on the milk storage container 30.

[0101] For example, when the first locking part and the first locking mating part, as well as the second locking part and the second locking mating part, are both interference fits, the interference fit amount between the first locking part and the first locking mating part is designed to be greater than the interference fit amount between the second locking part and the second locking mating part; or the second locking part and the second locking mating part are connected by a snap-fit ​​connection, and the first locking part and the first locking mating part are connected by a thread, and the thread connection force between the first locking part and the first locking mating part is greater than the snap-fit ​​force between the second locking part and the second locking mating part.

[0102] C: Combination Figures 3 to 5 As shown, the suction diaphragm 40 and the second component are interference-fitted. In this embodiment, interference fit means that there is dimensional interference between the contact surfaces of the suction diaphragm 40 and the second component. The assembly size of the suction diaphragm 40 is slightly larger than the assembly space of the second component. During assembly, the interference fit is achieved through the compression deformation of the elastic material. For example, the suction diaphragm 40 and / or the negative pressure hole 12 of the second component can be made of elastic material such as silicone or rubber. During assembly, elastic compression occurs between the suction diaphragm 40 and the second component. This fit method can maintain the bonding state between the second component and the suction diaphragm 40 through frictional resistance, while maintaining the sealing of the negative pressure hole 12.

[0103] When the second component is disassembled, because the connection between the suction diaphragm 40 and the first component is stronger, the frictional resistance generated by the interference fit is overcome preferentially, and the suction diaphragm 40 remains on the main unit 20 side and will not detach with the second component. At this time, the first component and the milk storage container 30 are still sealed by the suction diaphragm 40, preventing breast milk in the milk storage container 30 from entering the interior of the first component. By controlling the interference fit between the suction diaphragm 40 and the second component within a specific range, for example, the compression deformation of the suction diaphragm 40 is between 0.1 and 0.5 mm, it is ensured that the force required to disassemble the second component is less than the connection strength between the suction diaphragm 40 and the first component.

[0104] D: Combination Figures 3 to 5 As shown, in this embodiment, the suction diaphragm 40 is interference-fitted with the first component, and the interference amount between the suction diaphragm 40 and the first component is greater than the interference amount between the suction diaphragm 40 and the second component. The mating surface size of the suction diaphragm 40 is slightly larger than the corresponding interface size of the first or second component to achieve an interference fit between the suction diaphragm 40 and the first and second components respectively. The interference difference refers to the fact that the compression amount of the suction diaphragm 40 when it is interference-fitted with the first component is greater than the compression amount when it is interference-fitted with the second component. Specifically, this can be achieved by adjusting the wall thickness or diameter or other mating dimensions of the contact area between the suction diaphragm 40 and the first or second component. For example, the interference amount between the suction diaphragm 40 and the first component is 1.5-3 times the interference amount between the suction diaphragm 40 and the second component.

[0105] Because the interference fit between the suction diaphragm 40 and the first component is greater than that between the suction diaphragm 40 and the second component, during the disassembly of the second component, the suction diaphragm 40 remains on the first component side due to the stronger connection between it and the first component. This maintains a sealed state between the first component and the milk storage container 30. Even if the machine is not turned off, the breast milk in the milk storage container 30 cannot enter the main unit 20 through the negative pressure hole 12, preventing liquid contamination or damage to the first component.

[0106] Furthermore, connecting the suction diaphragm 40 to the first and second components using an interference fit improves the ease of installation and disassembly. When disassembling or assembling the breast pump, for example when cleaning it, the second component is removed from the suction diaphragm 40. Due to the large interference fit between the suction diaphragm 40 and the first component, the suction diaphragm 40 remains attached to the first component. Then, the suction diaphragm 40 is removed from the first component, completing the disassembly of all components of the breast pump. This not only prevents breast milk from entering the main unit but also improves the convenience of assembly and disassembly.

[0107] E: Combination Figure 5 As shown, in one embodiment of the present invention, the surface of the suction diaphragm 40 is provided with a plurality of mating parts 43, at least one mating part 43 is interference-fitted with the second component, and at least two mating parts 43 are interference-fitted with the first component; the number of mating parts 43 that are interference-fitted with the first component is greater than the number of mating parts 43 that are interference-fitted with the second component.

[0108] F: In this embodiment, the mating part 43 can be a protrusion or rib provided on the surface of the suction diaphragm 40. The structural size of these protrusions is slightly larger than the size of the installation position of the corresponding connector, thereby creating an interference fit, thus forming a sealing connection and fixing effect.

[0109] The suction diaphragm 40 has more mating parts 43 at the connection point with the first component, making the connection between the suction diaphragm 40 and the first component stronger than the connection between the suction diaphragm 40 and the second component. When the second component is disassembled, the suction diaphragm 40 remains connected due to the multi-point interference fit with the first component, thereby blocking the communication path between the milk storage container 30 and the first component and preventing milk backflow.

[0110] G: Combination Figure 5 As shown, in one embodiment of the present invention, the suction diaphragm 40 is formed with a mounting groove 44, and the side wall of the mounting groove 44 is provided with a mating part 43. The first component or the second component is partially embedded in the mounting groove 44 and is interference-fitted with the mating part 43.

[0111] In this embodiment, a mounting groove 44 is formed by a recess on the surface of the suction diaphragm 40. The mounting groove 44 can be an annular groove, a rectangular groove, or an irregularly shaped groove, and its depth and width can be adapted to the external dimensions of the portion of the suction diaphragm 40 into which it is embedded. This structure achieves the assembly and positioning of the suction diaphragm 40 with the first or second component through physical positioning. A mating part 43 is provided on the sidewall of the mounting groove 44, which can specifically be a protrusion, a corrugated surface, or a locally thickened structure. The mating part 43 generates an interference fit force with the embedded component through elastic deformation, thereby enhancing the connection stability.

[0112] Specifically, during the mating process between the mounting groove 44 and the first component, the edge of the first component's housing is embedded in the mounting groove 44. At this time, the mating part 43 is compressed and undergoes elastic deformation, generating friction between it and the first component. Since the number and interference fit of the mating parts 43 are configured to prioritize connection with the first component, when the second component is disassembled, the suction diaphragm 40 remains fixed due to its stronger connection with the first component, preventing it from detaching from the first component due to misoperation. Simultaneously, the geometric constraints of the mounting groove 44 ensure that the suction diaphragm 40 experiences uniform stress during deformation, avoiding localized stress concentration that could affect sealing performance. The connection interface between the suction diaphragm 40 and the first component forms multi-directional constraints, improving assembly accuracy.

[0113] H: Combination Figure 5 As shown, in one embodiment of the present invention, the second component is provided with a first diaphragm support 14, the first component is provided with a second diaphragm support 22, and the two sides of the suction diaphragm 40 are respectively sleeved on the first diaphragm support 14 and the second diaphragm support 22, and are interference-fitted with the second component and the first component.

[0114] In this embodiment, the first diaphragm support 14 is a support structure disposed on the second component. The shape of the first diaphragm support 14 can be annular, elliptical, polygonal, or irregular. The first diaphragm support 14 can be integrally formed on the second component by injection molding, and its outer diameter is slightly larger than the original inner diameter of the suction diaphragm 40 sleeve portion. This structure generates radial clamping force through interference fit with the suction diaphragm 40 and forms a sealing interface.

[0115] The second diaphragm support 22 is a support structure mounted on the first component. The shape of the second diaphragm support 22 can be annular, elliptical, polygonal, or irregular. Specifically, it can be an injection-molded integral structure or a detachable connection structure such as a snap-fit ​​or threaded connection. The outer diameter of the second diaphragm support 22 is slightly larger than the original inner diameter of the fitting portion of the suction diaphragm 40. This structure generates radial clamping force through an interference fit with the suction diaphragm 40, forming a sealing interface.

[0116] Specifically, when the suction diaphragm 40 is respectively fitted onto the first diaphragm support 14 and the second diaphragm support 22 on both sides, the suction diaphragm 40 forms a sealed connection with the support under radial compression. Simultaneously, an installation groove 44 can be provided on one side of the diaphragm, and the first diaphragm support 14 or the second diaphragm support 22 can be embedded in the installation groove 44.

[0117] I: Such as Figure 2 , Figure 4As shown, the first component is a milk storage container 30, the second component is a breast pump shield 10, and a first diaphragm support 14 is mounted on the breast pump shield 10. The first diaphragm support 14 and the breast pump shield 10 can be an integrally formed structure or a detachable structure connected by plug-in, snap-fit, or other methods. The first diaphragm support 14 is in gas communication with the breast pump channel 11, and the surface of the first diaphragm support 14 is recessed. When the milk storage container 30 and the breast pump shield 10 are assembled, the suction diaphragm 40 abuts against the recessed surface of the first diaphragm support 14. The two sides of the suction diaphragm 40 are respectively fitted and sealed between the negative pressure interface 31 of the milk storage container 30 and the surface of the first diaphragm support 14, thereby separating the breast pump into two gas-liquid separated sides.

[0118] Furthermore, the first diaphragm support 14 and the second diaphragm support 22 are inclined, such as... Figure 4 and Figure 5 As shown, the breast pump shield 10 is installed at the opening on one side of the milk storage container 30, and together with the milk storage container 30, forms a milk storage cavity. Therefore, during installation, the breast pump shield 10 needs to be installed along... Figure 4 The first diaphragm support 14 and the second diaphragm support 22 are set at an angle, and their angles are as shown in the figure. Figure 4 As shown, the second diaphragm support 22 installed on the milk storage container 30 is inclined toward the opening of the milk storage container 30. The inclination angles of the first diaphragm support 14 and the second diaphragm support 22 are matched, so the first diaphragm support 14, the suction diaphragm 40 and the second diaphragm support 22 are easy to connect and cooperate when the breast pump shield 10 is installed and removed.

[0119] Simultaneously, the tilted first diaphragm support 14 and second diaphragm support 22, when the breast pump shield 10 is installed in the milk storage container 30, will generate a component of the horizontal force along the tilt direction of the first diaphragm support 14 and the second diaphragm support 22, which will cause the first diaphragm support 14 and the second diaphragm support 22 to cooperate with the suction diaphragm 40 respectively. Therefore, this design can also reduce the problem of the suction diaphragm 40 not being properly installed with the breast pump shield 10 or the milk storage container 30.

[0120] J: Combination Figure 5 As shown, in one embodiment of the present invention, the longitudinal section of the second diaphragm support 22 is stepped, and the suction diaphragm 40 is interference-fitted with at least two stepped surfaces of the second diaphragm support 22.

[0121] In this embodiment, the longitudinal section of the second diaphragm support 22 is stepped, so that the outer peripheral surface of the support has a stepped structure along the extension direction of the support. Specifically, the stepped annular protrusions can be formed by injection molding. The suction diaphragm 40 is sleeved on the outer periphery of the second diaphragm support 22 and is adapted to fit the second diaphragm support 22. The interference fit of at least two stepped surfaces means that at least two interference fits are formed between the inner wall of the suction diaphragm 40 and different layers of steps of the second diaphragm support 22, so that after the suction diaphragm 40 is sleeved on the second diaphragm support 22, the suction diaphragm 40 undergoes elastic deformation to form a multi-level contact area with the second diaphragm support 22 in a staggered distribution.

[0122] During the installation of the suction diaphragm 40, the stepped second diaphragm support 22 contacts the inner wall of the suction diaphragm 40 through stepped surfaces of different heights. When the diaphragm is fitted onto the outer periphery of the support, its inner wall deforms simultaneously with the first and second stepped surfaces, forming two interference fit areas. The vertical drop between the stepped surfaces causes the diaphragm to be constrained by deformation in different directions in the axial and circumferential directions. Therefore, when disassembling the second component, the connection between the suction diaphragm 40 and the first component is stronger due to the superposition of frictional resistance at multiple points, making the connection between the suction diaphragm 40 and the first component stronger than the connection between the suction diaphragm 40 and the second component.

[0123] Of course, the specific structures of the first diaphragm support 14 and the second diaphragm support 22 and their cooperation with the suction diaphragm 40 in the above HJ embodiments can be applied to Embodiment I, Embodiment II and Embodiment III.

[0124] For example Figure 4 As shown, the first component is a milk storage container 30, the second component is a breast pump shield 10, the first diaphragm support 14 is placed on the breast pump shield 10, the second diaphragm support 22 is placed on the milk storage container 30, and the suction diaphragm 40 is connected to the first diaphragm support 14 and the second diaphragm support 22 respectively.

[0125] For example Figure 6 As shown, the first component is the main unit 20, the second component is the breast suction shield 10, the first diaphragm support 14 is set on the breast suction shield 10, the second diaphragm support 22 is set on the main unit 20, and the suction diaphragm 40 is connected to the first diaphragm support 14 and the second diaphragm support 22 respectively.

[0126] For example Figure 7 As shown, the first component is the main unit 20, the second component is the milk storage container 30, the first diaphragm support 14 is set on the milk storage container 30, the second diaphragm support 22 is set on the main unit 20, and the suction diaphragm 40 is connected to the first diaphragm support 14 and the second diaphragm support 22 respectively.

[0127] K: Combination Figure 5 As shown, in one embodiment of the present invention, the suction diaphragm 40 includes a soft rubber part 41 and a hard rubber part 42. The hard rubber part 42 is arranged around the outer periphery or inner wall of the soft rubber part 41, and the soft rubber part 41 is interference-fitted with the first component and the second component.

[0128] In this embodiment, the soft rubber part 41 can be made of silicone or thermoplastic elastomer, forming an interference fit with the contact component through elastic deformation. The hard rubber part 42 is a rigid support structure disposed on the periphery or inner wall of the soft rubber part 41, and can be made of polypropylene or polycarbonate, used to limit the deformation range of the soft rubber part 41 and provide structural stability.

[0129] Specifically, in the installed state, the soft rubber component 41 maintains an interference fit with the contact surfaces of the first and second components to ensure a seal. The hard rubber component 42, through its annular structure, provides radial constraint to the deformation area of ​​the soft rubber component 41, preventing plastic deformation or positional displacement of the soft rubber component 41 during repeated deformation. During the disassembly of the second component, the rigid support of the hard rubber component 42 prevents the soft rubber component 41 from detaching from the connection surface of the first component due to stretching, ensuring that the suction diaphragm 40 remains fixed to the first component side. This forms a two-stage fixing mechanism: the elastic interference of the soft rubber component 41 provides a sealing effect, while the rigid constraint of the hard rubber component 42 maintains the overall connection stability.

[0130] L: Combination Figure 5 As shown, in one embodiment of this utility model, the soft rubber part 41 and the hard rubber part 42 are integrally formed, and the outer peripheral wall of the soft rubber part 41 forms a limiting groove (not shown), and the hard rubber part 42 is partially embedded in the limiting groove.

[0131] In this embodiment, the limiting groove is an annular groove provided on the outer peripheral wall of the soft rubber part 41, which can be formed by molding or injection molding processes, and is used to accommodate part of the structure of the hard rubber part 42 to form a mechanical interlock. The hard rubber part 42 is embedded into the groove of the soft rubber part 41 by injection molding or secondary molding processes, which can be achieved by segmented embedding or continuous covering to increase the contact area and limit lateral displacement.

[0132] Specifically, when the suction diaphragm 40 is subjected to the assembly tension of the first component and the second component, the portion of the hard plastic part 42 embedded in the limiting groove of the soft plastic part 41 constrains the soft plastic part 41, while the rigidity of the hard plastic part 42 prevents the soft plastic part 41 from deforming excessively under stress.

[0133] M: In some specific embodiments, the depth of the limiting groove can be set to one-third to one-half of the thickness of the rigid plastic part 42. The rigid plastic part 42 can be made of polypropylene material and injection molded in segments onto the silicone matrix of the soft plastic part 41, with elastic gaps maintained between adjacent rigid plastic segments to accommodate deformation. In another embodiment, the sidewall of the limiting groove can be designed as a wavy or toothed structure, for example, by increasing the coefficient of friction of the contact surface to improve the pull-out resistance.

[0134] The soft rubber part 41 and the hard rubber part 42 are integrally molded. Specifically, the soft rubber part 41 and the hard rubber part 42 are formed into an integral structure through a two-color injection molding or co-extrusion molding process. By using an integral molding process to process the soft rubber part 41 and the hard rubber part 42, the assembly errors that may occur in separate assembly are reduced, and the bonding strength between the soft rubber part 41 and the hard rubber part 42 is improved.

[0135] N: In one embodiment of this utility model, the suction diaphragm 40 and the first component are connected by a threaded connection or a snap-fit ​​connection. The suction diaphragm 40 and the first component can be threaded together; for example, the surfaces of the suction diaphragm 40 and the first component are respectively provided with external threads and internal threads, and the suction diaphragm 40 and the first component are fixedly connected by the engagement of the threads. Alternatively, the suction diaphragm 40 and the first component can be snap-fit ​​connected; for example, a mechanical connection structure with interlocking fixing is provided between the suction diaphragm 40 and the first component, specifically, a protrusion and groove interlocking structure can be used to achieve the snap-fit ​​connection.

[0136] Specifically, during the separation of the second component from the first component, the suction diaphragm 40 remains on the first component side by means of threaded engagement or snap-fit. Because the axial clamping force generated by the threaded connection or the snap-fit ​​force formed by the snap-fit ​​connection is greater than the interference fit force of the second component on the suction diaphragm 40, the second component can be removed separately, while the suction diaphragm 40 still covers the outside of the negative pressure pump assembly 21 of the first component, preventing breast milk in the milk storage container 30 from entering the first component.

[0137] O: Combination Figure 4 As shown, in one embodiment of this utility model, the breast pump shield 10 is provided with a milk outlet 13, and the milk storage container 30 is connected to the milk outlet 13. The breast pump shield 10 is flared to improve the fit with the breast. The surface of the second component has a milk outlet 13 that connects to the internal breast pumping channel 11. It can be understood that when the breast pump is in the pumping state, the milk outlet 13 is located below the breast pump shield 10 to guide the breast milk into the milk storage container 30. The milk storage container 30 can be directly connected to the breast pump shield 10 and directly connected to the milk outlet 13, or the milk storage container 30 can be connected to the milk outlet 13 through other components, such as pipes, one-way valves 50, etc.

[0138] P: Combination Figure 6As shown, in one embodiment of this utility model, the first component is the main unit 20, and the second component is the breast suction shield 10. The breast suction shield 10 is provided with a negative pressure hole 12, and a suction diaphragm 40 is disposed between the main unit 20 and the negative pressure hole 12 to block the negative pressure channel of the main unit 20. One side of the breast suction shield 10 is used to fit against the breast, and the other side is provided with a negative pressure hole 12. The suction diaphragm 40 can block the negative pressure hole 12 by means of interference fit, sealing, etc. The suction diaphragm 40 can be sleeved on the outer periphery of the negative pressure hole 12 or embedded in the negative pressure hole 12. At the same time, the suction diaphragm 40 is also sealed to the main unit 20 to block the negative pressure channel of the main unit 20. Therefore, the negative pressure generated by the negative pressure pump assembly 21 in the main unit 20 acts on the suction diaphragm 40 through the negative pressure channel, causing the suction diaphragm 40 to deform, thereby forming a negative pressure inside the breast suction channel 11.

[0139] Of course, as Figure 4 As shown, the first component is a milk storage container 30, and the second component is a breast pump shield 10. The breast pump shield 10 has a negative pressure hole 12, and a suction diaphragm 40 is disposed between the milk storage container 30 and the negative pressure hole 12. The suction diaphragm 40 can be sleeved on the outer periphery of the negative pressure hole 12 or embedded in the negative pressure hole 12. At the same time, the suction diaphragm 40 is also sealed to the milk storage container 30. Therefore, the negative pressure generated by the negative pressure pump assembly 21 in the main unit 20 acts on the suction diaphragm 40 through the negative pressure channel and the negative pressure interface 31 of the milk storage container 30, causing the suction diaphragm 40 to deform, thereby creating negative pressure inside the breast pump channel 11.

[0140] Q: In one embodiment of this utility model, the breast shield 10 is an integrally formed independent three-way component, or a three-way structure formed by assembling multiple accessories.

[0141] The breast pump shield 10 can be a separate flange, with a milk inlet at one end for conforming to the breast and a negative pressure hole 12 and a milk outlet 13 connecting the internal milk pumping channel at the other end. Thus, the flange is essentially a single, integrally formed T-joint. Alternatively, the breast pump shield 10 can also be a combination of components with detachable T-joints.

[0142] The breast shield 10 may be provided with a first diaphragm support 14 on which a suction diaphragm 40 can be installed. The first diaphragm support 14 may be integrally formed on the breast shield 10 or integrally formed on the accessories of the three-way structure that make up the breast shield 10, and the suction diaphragm 40 is sealed to the negative pressure hole 12 of the breast shield 10.

[0143] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A breast pump, characterized in that, include: The host computer has a negative pressure pump assembly for generating negative pressure; A milk storage container is provided with a negative pressure interface for transmitting negative pressure, and the negative pressure interface is in gas communication with the negative pressure component; The breast shield is equipped with a breast pumping channel; the milk storage container is detachably connected to the breast shield to form a milk storage chamber; as well as Suction diaphragm, When the milk storage container is assembled with the breast pump shield, the suction diaphragm is located at the negative pressure interface of the milk storage container and its separable edge is sealed between the milk storage container and the breast pump shield, separating the breast pump into two sides with gas-liquid separation. The suction diaphragm deforms under the negative pressure provided by the negative pressure pump assembly, thereby forming a negative pressure in the breast pump channel. The connection between the suction diaphragm and the milk storage container is stronger than the connection between the diaphragm and the breast pump shield. So that when the breast pump shield is removed, the suction diaphragm is preferentially retained on the milk storage container.

2. The breast pump as described in claim 1, characterized in that, The suction diaphragm includes a first locking part, and the milk storage container includes a first locking engagement part. When the first locking part is locked with the first locking engagement part, the suction diaphragm remains sealed at the negative pressure port of the milk storage container.

3. The breast pump as described in claim 2, characterized in that, The first locking part and the first locking mating part are engaged in at least one of the following: magnetic attraction, interference fit, snap-fit, threaded fit, and elastic hook locking.

4. The breast pump as described in claim 2, characterized in that, The suction diaphragm includes a second locking part, and the breast shield includes a second locking engagement part, wherein the second locking part locks with the second locking engagement part.

5. The breast pump as described in claim 2, characterized in that, The breast pump shield includes a first diaphragm support, which is in gas communication with the breast pump channel; when the milk storage container is assembled with the breast pump shield, the suction diaphragm abuts against the first diaphragm support and its edge is sealed between the negative pressure port of the milk storage container and the first diaphragm support.

6. The breast pump as described in claim 1, characterized in that, The suction diaphragm and the milk storage container are interference fit.

7. The breast pump as described in claim 1, characterized in that, The milk storage container is provided with a second diaphragm support, and the two sides of the suction diaphragm are respectively fitted onto the second diaphragm support and are interference-fitted with it.

8. The breast pump as described in claim 7, characterized in that, The longitudinal section of the second diaphragm support is stepped, and the suction diaphragm is interference-fitted with it on at least two stepped surfaces.

9. The breast pump as described in claim 1, characterized in that, The suction diaphragm has an installation groove, and the milk storage container or the breast pump shield is partially embedded in the installation groove and is interference-fitted with the suction diaphragm.

10. The breast pump as described in claim 1, characterized in that, The suction diaphragm includes a soft rubber component and a hard rubber component. The hard rubber component is arranged around the outer periphery or inner wall of the soft rubber component. The soft rubber component is used to seal and cooperate with the milk storage container and the breast pump shield.

11. The breast pump as described in claim 10, characterized in that, The soft rubber part and the hard rubber part are integrally molded. The outer peripheral wall of the soft rubber part forms a limiting groove, and the hard rubber part is partially embedded in the limiting groove.

12. The breast pump as described in claim 1, characterized in that, The breast pump shield is provided with a milk outlet, and the milk storage container is directly connected to the milk outlet or indirectly connected through a one-way valve.

13. The breast pump as described in claim 1, characterized in that, The breast shield is an integrally formed independent three-way component, or a three-way structure formed by assembling multiple components.

14. A breast pump, characterized in that, include: The host computer has a negative pressure pump assembly for generating negative pressure and includes a negative pressure interface; Breast shield with breast pumping channel; A milk storage container, wherein the milk storage container is directly or indirectly in liquid communication with a breast pump shield and is used to store breast milk received by the breast pump shield; as well as When the breast pump is assembled, the separable edge of the suction diaphragm is sealed between the main unit and the breast shield, separating the breast pump into two sides with gas-liquid separation. The suction diaphragm deforms under the negative pressure provided by the negative pressure pump assembly, thereby creating negative pressure in the breast pump channel. The connection between the suction diaphragm and the main unit is stronger than the connection between the diaphragm and the breast shield. So that when removing the breast suction shield, the suction diaphragm is preferably retained on the main unit.

15. The breast pump as described in claim 14, characterized in that, The suction diaphragm includes a first locking part, and the main unit housing includes a first locking engagement part. When the first locking part is locked with the first locking engagement part, the suction diaphragm remains sealed to the main unit housing.

16. The breast pump as described in claim 15, characterized in that, The first locking part and the first locking mating part are engaged in at least one of the following: magnetic attraction, interference fit, snap-fit, threaded fit, and elastic hook locking.

17. The breast pump as described in claim 16, characterized in that, The suction diaphragm and the main unit are interference-fitted.

18. The breast pump as described in claim 17, characterized in that, The suction diaphragm has a mounting groove, and the breast suction shield or the main unit is partially embedded in the mounting groove and is interference-fitted with the suction diaphragm.

19. The breast pump as described in any one of claims 14 to 18, characterized in that, The breast suction shield is provided with a first diaphragm support, and the main unit is provided with a second diaphragm support. The two sides of the suction diaphragm are respectively sleeved on the first diaphragm support and the second diaphragm support, and are interference-fitted with them.

20. The breast pump as described in claim 19, characterized in that, The longitudinal section of the second diaphragm support is stepped, and the suction diaphragm is interference-fitted with it on at least two stepped surfaces.

21. The breast pump as described in claim 14, characterized in that, The suction diaphragm includes a soft rubber component and a hard rubber component. The hard rubber component is arranged around the outer periphery or inner wall of the soft rubber component. The soft rubber component is used to seal and cooperate with the main unit and the breast suction shield.

22. The breast pump as described in claim 21, characterized in that, The soft rubber part and the hard rubber part are integrally molded. The outer peripheral wall of the soft rubber part forms a limiting groove, and the hard rubber part is partially embedded in the limiting groove.

23. The breast pump as described in claim 14, characterized in that, The connection structure between the suction diaphragm and the main unit is a threaded connection or a snap-fit ​​connection.

24. The breast pump as described in claim 14, characterized in that, The breast pump shield is provided with a milk outlet, and the milk storage container is connected to the milk outlet.

25. The breast pump as described in claim 14, characterized in that, The breast suction shield is provided with a negative pressure hole, and the suction diaphragm is disposed between the main unit and the negative pressure hole to block the negative pressure channel of the main unit.

26. A breast pump, characterized in that, The breast pump includes: The host unit includes a negative pressure pump assembly; The milk storage container is equipped with a negative pressure port for transmitting negative pressure; A breast pump shield, which is connected to the milk storage container and has a breast pumping channel; the breast pump shield and the milk storage container are detachably connected to form a milk storage chamber; and A suction diaphragm is provided between the main unit and the milk storage container when the breast pump is assembled, and its separable edge is sealed between the main unit and the milk storage container; thus separating the breast pump into two sides with gas-liquid separation. The suction diaphragm can deform under the action of the negative pressure pump assembly to create negative pressure in the milk suction channel; The connection between the suction diaphragm and the main unit is stronger than the connection between the diaphragm and the milk storage container; When the main unit is disassembled from the milk storage container, the suction diaphragm is preferentially retained on the main unit.

27. The breast pump as described in claim 26, characterized in that, The suction diaphragm includes a first locking part, and the main unit includes a first locking engagement part. When the first locking part is locked with the first locking engagement part, the suction diaphragm remains sealed to the main unit housing.

28. The breast pump as described in claim 27, characterized in that, The first locking part and the first locking mating part are engaged in at least one of the following: magnetic attraction, interference fit, snap-fit, threaded fit, and elastic hook locking.

29. The breast pump as described in claim 26, characterized in that, The suction diaphragm and the milk storage container are interference-fitted.

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