Breast pump main machine and breast pump

Abstract

The utility model discloses a breast pump main machine and a breast pump, and relates to the technical field of mother and baby products, the breast pump main machine comprises a shell assembly, a negative pressure assembly, an electromagnetic valve and an elastic piece; the shell assembly comprises a negative pressure opening, and the negative pressure opening is used for being communicated with the milk sucking assembly. The negative pressure assembly is arranged in the shell assembly, and the negative pressure assembly is used for providing negative pressure during milk suction; the electromagnetic valve is located in the shell assembly and communicates with the negative pressure assembly and the negative pressure opening. The electromagnetic valve is connected with the shell assembly through an elastic piece, and the elastic piece is used for buffering vibration generated by the electromagnetic valve in the axis direction. According to the breast pump main machine, when the electromagnetic valve works and vibrates in the axis direction, the elastic piece deforms so as to effectively absorb the vibration generated by the electromagnetic valve, and the noise reduction effect on the electromagnetic valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of maternal and infant products, in particular to a breast pump host and a breast pump. Background Art

[0002] Breast pumps have become an indispensable tool for many nursing mothers. They utilize a vacuum component to generate suction, helping mothers extract breast milk from the mammary glands for storage and feeding. The negative pressure generated by the vacuum component fluctuates during operation. Therefore, to ensure a more stable negative pressure during extraction, a solenoid valve is typically installed in the breast pump. One end of the solenoid valve is connected to the milk extraction air circuit to balance the negative pressure during extraction, while the other end is mounted on the breast pump housing.

[0003] When the solenoid valve is operating, it vibrates due to airflow, causing the breast pump to generate a lot of noise. Currently, foam material is wrapped around the solenoid valve to reduce the noise. However, because the solenoid valve vibrates along its axis during operation, existing foam material cannot effectively attenuate the vibration, resulting in poor noise reduction. Utility Model Content

[0004] The main purpose of the utility model is to provide a breast pump main unit and a breast pump, aiming to solve the problem that the existing breast pump main unit has a poor noise reduction effect on the solenoid valve.

[0005] To achieve the above-mentioned purpose, the present invention proposes a breast pump main unit, which includes a shell assembly, a negative pressure assembly, a solenoid valve and an elastic member; the shell assembly includes a negative pressure port, which is used to communicate with the milk suction assembly; the negative pressure assembly is arranged in the shell assembly, and is used to provide negative pressure during milk suction; the solenoid valve is located in the shell assembly and is communicated with the negative pressure assembly and the negative pressure port; the solenoid valve is connected to the shell assembly through the elastic member, and the elastic member is used to buffer the vibration generated by the solenoid valve along the axial direction.

[0006] In an embodiment of the present invention, the elastic direction of the elastic member is arranged along the vibration direction of the solenoid valve.

[0007] In an embodiment of the present invention, the elastic restoring direction of the elastic member is arranged along the vibration direction of the solenoid valve.

[0008] In an embodiment of the present invention, the elastic member is sleeved outside the solenoid valve.

[0009] In an embodiment of the present invention, when the solenoid valve is working, the elastic member abuts against or is fixedly connected to at least one end of the solenoid valve along the vibration direction.

[0010] In an embodiment of the present invention, the housing assembly further includes a limiting member. When the solenoid valve is working, the elastic member is used to limit the vibration of the solenoid valve through the limiting member or is fixedly connected to the limiting member.

[0011] In an embodiment of the present invention, the elastic member includes a spring, and the solenoid valve is connected to the housing assembly via the spring.

[0012] In an embodiment of the present invention, the spring is sleeved on the outside of the solenoid valve, and when the solenoid valve is working, the elastic member is used to limit the vibration of the solenoid valve.

[0013] In one embodiment of the present invention, the spring is square and matches the shape of the solenoid valve.

[0014] The present invention further provides a breast pump, which comprises a milk suction component and a breast pump main unit as described above; the milk suction component is connected to the negative pressure component.

[0015] The breast pump main unit proposed in the present invention includes a shell assembly, a negative pressure assembly, a solenoid valve, and an elastic member. The shell assembly includes a negative pressure port, which is used to connect to the milk suction assembly. The negative pressure assembly is arranged in the shell assembly to provide negative pressure during milk suction. The solenoid valve is arranged in the shell assembly and connected to the negative pressure assembly and the negative pressure port to balance the negative pressure during milk suction. The solenoid valve is connected to the shell assembly through an elastic member. The elastic member can be arranged at both ends of the solenoid valve or wrapped around the solenoid valve. The elastic member can be a spring, a shrapnel, or other structure. When the solenoid valve is working and generates vibration along the axial direction, the elastic member deforms to effectively absorb the vibration generated by the solenoid valve, thereby improving the noise reduction effect of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the internal structure of an embodiment of a breast pump host provided by the present invention;

[0018] Figure 2 for Figure 1 Exploded view of the breast pump main unit;

[0019] Figure 3This is a structural diagram of a first embodiment of a solenoid valve and an elastic member in a breast pump main unit of the present utility model;

[0020] Figure 4 This is a structural diagram of a second embodiment of the electromagnetic valve and elastic member in the breast pump main unit of the present utility model;

[0021] Figure 5 This is a structural diagram of a third embodiment of the electromagnetic valve and elastic member in the breast pump main unit of the present utility model;

[0022] Figure 6 This is a structural diagram of a fourth embodiment of the solenoid valve and elastic member in a breast pump main unit of the present utility model.

[0023] Description of Figure Numbers:

[0024] 10. Shell assembly; 11. Outer shell; 111. Negative pressure port; 12. Limiting frame; 121. Air inlet; 122. Avoidance port; 20. Negative pressure assembly; 21. Negative pressure pump; 22. Air pipe; 30. Solenoid valve; 40. Spring; 41. Second section; 42. First section.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] The utility model provides a breast pump host.

[0030] Combine Figure 1 As shown, in one embodiment of the present invention, the breast pump main unit includes a housing assembly 10, a negative pressure assembly 20, a solenoid valve 30 and an elastic member; the housing assembly 10 includes a negative pressure port 111, which is used to communicate with the milk suction assembly. The negative pressure assembly 20 is arranged in the housing assembly 10 and is used to provide negative pressure during milk suction; the solenoid valve 30 is located in the housing assembly 10 and is connected to the negative pressure assembly 20 and the negative pressure port 111; the solenoid valve 30 is connected to the housing assembly 10 through an elastic member, which is used to buffer the vibration generated by the solenoid valve 30 along the axial direction.

[0031] In this embodiment, the applicant provides a technical solution to the problem of high noise levels during operation of the solenoid valve 30. When used in a breast pump, the solenoid valve 30 can reduce the impact of the noise from the solenoid valve 30 on the user, thereby improving the user experience. Breast pumps come in many varieties, which can be categorized into manual and electric breast pumps based on their negative pressure power source, and wearable and handheld breast pumps based on their mounting method. The inventive concepts of this application can be applied to any of these breast pumps equipped with a solenoid valve 30.

[0032] Specifically, the housing assembly 10 is provided with an installation space for installing the negative pressure assembly 20, the solenoid valve 30 and the elastic member. A negative pressure port 111 is provided on the surface of the housing assembly 10 to communicate with the installation space. The negative pressure assembly 20 may be a negative pressure pump 21 or a manual negative pressure device formed by a pressure rod and a piston, such as Figure 1As shown, the negative pressure assembly includes a negative pressure pump 21 and an air pipe 22. The negative pressure pump 21 is disposed within the housing assembly 10 and connected to the negative pressure port 111 via the air pipe 22. During milk extraction, the negative pressure generated by the negative pressure assembly 20 affects the milk extraction effect. Therefore, a solenoid valve 30 is connected to the negative pressure assembly 20 and the negative pressure port 111 to stabilize the negative pressure during milk extraction. The solenoid valve 30 regulates the negative pressure during milk extraction by controlling the flow of air or vacuum. During operation, the solenoid valve 30 vibrates along its axis.

[0033] Therefore, the present application provides an elastic member, and connects the solenoid valve 30 to the housing assembly 10 through the elastic member. The elastic member can be extended and retracted along the axis of the solenoid valve 30. For example, the elastic member can be provided at both ends of the solenoid valve 30, or wrapped around the solenoid valve 30. Therefore, when the solenoid valve 30 vibrates along the axis, the elastic member can act as a buffer, thereby achieving a good noise reduction effect on the solenoid valve 30. The elastic member can be a spring 40, a shrapnel, an air cushion, or other structures.

[0034] Through the above design, when the breast pump of this embodiment is in operation, the vibration generated by the solenoid valve 30 is effectively absorbed by the spring 40. At the same time, the solenoid valve 30 is connected to the housing assembly 10 through the elastic member, thereby avoiding resonance between the housing assembly 10 and the solenoid valve 30, thereby reducing the noise of the breast pump main unit, improving the user experience, and extending the service life of the product.

[0035] In one embodiment of the present invention, the elastic direction of the elastic member is arranged along the vibration direction of the solenoid valve 30 .

[0036] It can be seen from the above embodiments that the elastic member can be an elastic structure such as a spring, a spring sheet or a rubber pad. In this embodiment, the elastic member can have one or more elastic directions, and at least one elastic direction is set along the vibration direction of the solenoid valve 30. When the solenoid valve 30 vibrates along the axial direction, the elastic member can be compressed or cause the elastic member to deform, so that the elastic member has a buffering effect on the vibration of the solenoid valve 30, thereby reducing the noise generated by the solenoid valve 30.

[0037] In one embodiment of the present invention, the restoring direction of the elastic member is arranged along the vibration direction of the solenoid valve 30 .

[0038] The elastic direction refers to the direction in which a material deforms when subjected to an external force, while the recovery direction refers to the direction in which the material returns to its original shape after the external force is removed. For most materials, if they have not undergone plastic deformation, the elastic direction and the recovery direction are consistent, meaning they recover along the original direction of deformation. However, some materials may exhibit anisotropy, meaning that their elastic properties differ in different directions. In addition, factors such as the material's microstructure, phase changes, processing history, and temperature may also affect its elastic and recovery behavior. The material's elastic and recovery properties may vary, resulting in the elastic and recovery directions not being exactly the same.

[0039] Therefore, in this embodiment, the return direction of the elastic member is set to be the same as the vibration direction of the solenoid valve 30, so that the elastic member can more effectively utilize the rebound force to offset the vibration of the solenoid valve 30 in the axial direction, thereby further improving the buffering effect of the elastic member on the solenoid valve 30.

[0040] In one embodiment of the present invention, the elastic member is sleeved on the outside of the solenoid valve 30. The elastic member is sleeved on the outside of the solenoid valve 30 so that the elastic member has a buffering effect not only in the axial direction of the solenoid valve 30, but also in the circumferential or radial direction, thereby further improving the noise reduction effect of the elastic member on the solenoid valve 30.

[0041] In one embodiment, when the solenoid valve 30 is operating, the elastic member abuts or is fixedly connected to at least one end of the solenoid valve 30 along the vibration direction. Therefore, when the solenoid valve 30 vibrates in the axial direction, the elastic member is squeezed, thereby more effectively buffering the axial vibration of the solenoid valve 30.

[0042] In order to more clearly describe the positional relationship between the elastic member and the solenoid valve 30 , the present application uses the following embodiments and takes the spring 40 as an example to illustrate the relevant technical solutions.

[0043] Combine Figures 2 to 5 As shown, in one embodiment of the present invention, the elastic member includes a spring 40, which connects the solenoid valve 30 to the housing assembly 10. The design of the spring 40 not only provides a good cushioning effect but also features a simple structure, making it easy to install and maintain. The spring 40 is made of a highly elastic alloy steel to ensure its reliability and durability during long-term operation. Furthermore, the surface of the spring 40 undergoes a special treatment, such as chrome plating or nickel plating, to enhance its corrosion and wear resistance.

[0044] In practical applications, based on the connection of the solenoid valve 30 to the housing assembly 10 via the spring 40, the spring 40 provides a buffering effect. This application includes at least the following first to fourth embodiments, and further describes the structure of the spring 40 and the manner in which the spring 40 cooperates with the solenoid valve 30 through the following four embodiments. It will be appreciated that this application provides a technical solution to the problem of high noise levels caused by axial vibration of the solenoid valve 30, and is not limited to the following four embodiments of the combination of the spring 40 and the solenoid valve 30.

[0045] First embodiment:

[0046] like Figure 2 As shown, spring 40 is sleeved around the outside of solenoid valve 30. When solenoid valve 30 is operating, spring 40 is used to limit vibration of solenoid valve 30. Both ends of spring 40 protrude from solenoid valve 30 and are connected to housing assembly 10. In other words, spring 40 wraps around solenoid valve 30, providing support from multiple directions. This improves the stability of the connection between spring 40 and solenoid valve 30 and more effectively absorbs vibration of solenoid valve 30 in different directions.

[0047] The length of the spring 40 extending from the solenoid valve 30 at both ends, as well as the spiral diameter and pitch of the spring 40 are calculated based on the vibration amplitude and vibration frequency of the solenoid valve 30. In this embodiment, the length L of the spring 40 protruding from the solenoid valve 30 is set to: L ≥ 1 mm. Under the premise that the spring 40 is easy to install, it is ensured that the spring 40 has a good vibration absorption effect.

[0048] Although the solenoid valve 30 vibrates along its axis, when it contacts the housing assembly 10, the resonance between the solenoid valve 30 and the housing assembly 10 can amplify the noise produced by the solenoid valve 30. Therefore, in this embodiment, the spacing D between the circumference of the spring 40 and the housing assembly 10 is set to 1 mm ≤ D ≤ 3 mm. This spacing between the solenoid valve 30 and the housing assembly 10 reduces the impact of this resonance effect. Furthermore, this spacing between the spring 40 and the housing assembly 10 prevents the breast pump from malfunctioning due to connection failure, such as in the event of a fall.

[0049] In terms of connection method, both ends of the spring 40 can be detachably connected to the housing assembly 10 through threaded connectors or snap connectors, or the two ends of the spring 40 can be welded to the housing assembly 10.

[0050] Second embodiment:

[0051] Combine Figure 3As shown, the spring 40 has a first section 42 and a second section 41 arranged in sequence along its axial direction. The inner diameter of the first section 42 is larger than the inner diameter of the second section 41. The second section 41 is sleeved on the solenoid valve 30 and abuts against the peripheral side of the solenoid valve 30.

[0052] In this embodiment, the first section 42 has a larger inner diameter, creating a larger contact area with the housing assembly 10 and providing a wider elastic range to absorb larger vibrations. The second section 41 has a smaller inner diameter, providing higher rigidity to maintain the stability of the solenoid valve 30. The second section 41 abuts against the periphery of the solenoid valve 30 to confine the solenoid valve 30 within the second section 41. The second section 41 tightens the periphery of the solenoid valve 30, enhancing the stability of the connection between the spring 40 and the solenoid valve 30.

[0053] In addition, when assembling the solenoid valve 30 and the spring 40, the solenoid valve 30 can be inserted from the first section 42 with a larger inner diameter and moved toward the second section 41 so that the spring 40 is clamped in the second section 41. Therefore, this design can improve the convenience of assembly between the solenoid valve 30 and the spring 40.

[0054] Third embodiment:

[0055] Combine Figure 4 As shown, in one embodiment of the present invention, two springs 40 are provided. The two springs 40 are respectively sleeved on the two ends of the solenoid valve 30 , and the ends of the two springs 40 facing away from the solenoid valve 30 are both connected to the housing assembly 10 .

[0056] In this embodiment, the dual spring 40 design provides more stable support and more effective vibration absorption. The two springs 40 can independently adjust their spring constants and the clamping force between them and the solenoid valve 30 to adapt to the vibration characteristics under different operating conditions. Furthermore, during assembly, the two springs 40 simply need to be inserted into the ends of the solenoid valve 30. This design not only provides stable support but also facilitates disassembly and replacement, reducing maintenance costs.

[0057] Fourth embodiment:

[0058] Combine Figure 5 As shown, in one embodiment of the present invention, two springs 40 are provided. The two springs 40 are respectively connected to the end faces of the solenoid valve 30 , and the ends of the two springs 40 facing away from the solenoid valve 30 are both connected to the housing assembly 10 .

[0059] Because the solenoid valve 30 vibrates along its axis, in this embodiment, the spring 40 is directly connected to the end face of the solenoid valve 30. This design allows the spring 40 to provide more direct force transmission and more precise vibration damping control for the solenoid valve 30. The two springs 40 directly absorb vibration from the end face of the solenoid valve 30, effectively reducing vibration and noise, improving the performance of the breast pump and the user experience.

[0060] In other embodiments, the spring 40 may be disposed around the solenoid valve 30, extending in the radial direction of the solenoid valve 30, so that the solenoid valve 30 is supported on the housing assembly 10 via the spring 40. Alternatively, one end of the spring 40 may be connected to the circumference of the solenoid valve 30, while the other end may be bent toward the axis of the solenoid valve 30 and protrude from both ends of the solenoid valve 30, thereby also achieving the effect of the spring 40 buffering the vibration of the solenoid valve 30 in the axial direction.

[0061] Combine Figures 1 to 5 As shown, in one embodiment of the present invention, the spring 40 is square and matches the shape of the solenoid valve 30 .

[0062] Because the spring 40 is adapted to the shape of the solenoid valve 30, the solenoid valve 30 and the spring 40 have a larger contact area, thereby improving the spring 40's ability to cushion the vibrations of the solenoid valve 30 and the contact stability between the spring 40 and the solenoid valve 30. This ensures a strong connection between the spring 40 and the solenoid valve 30 and improves the long-term reliability of the spring 40's noise reduction effect on the solenoid valve 30. In other embodiments, the spring 40 may also have a circular, elliptical, or other shape.

[0063] In an embodiment of the present invention, the housing assembly 10 further includes a limiting member. When the solenoid valve 30 is working, the elastic member is used to limit the vibration of the solenoid valve 30 through the limiting member or be fixedly connected to the limiting member.

[0064] In this embodiment, the housing assembly 10 further includes a shell 11, and the limiting member can be a limiting frame 12, a limiting plate, and other structures, for example Figure 1 As shown, the limiting member is a limiting frame 12 , the elastic member is a spring 40 , the limiting frame 12 is installed in the housing 11 , the solenoid valve 30 and the spring 40 are both arranged in the limiting frame 12 , and the solenoid valve 30 is connected to the limiting frame 12 through the spring 40 .

[0065] The retaining frame 12 can be removably connected to the housing 11 or integrally formed with the housing 11. The retaining frame 12 also has a rectangular cross-section to accommodate the shapes of the spring 40 and the solenoid valve 30, facilitating their installation within the retaining frame 12. The ends of the spring 40 are pressed against the end plates of the retaining frame 12, ensuring that the spring 40 is stably positioned within the retaining frame 12 and maintaining the stability of the solenoid valve 30 during operation. Furthermore, the spring 40 and the retaining frame 12 can be connected using a threaded connection.

[0066] The material selection of the position limiting enclosure frame 12 is high-strength plastic or aluminum alloy to provide enough strength and durability. The surface of the position limiting enclosure frame 12 is specially treated, such as spray painting or anodizing, to improve its corrosion resistance and wear resistance.

[0067] Combine Figure 1 As shown, in one embodiment of the present invention, the peripheral side of the solenoid valve 30 is spaced apart from the limiting frame 12;

[0068] And / or, an air inlet 121 is opened at one end of the limiting enclosure 12, and the air inlet 121 is used to avoid the connecting pipeline between the solenoid valve 30 and the negative pressure component 20, and avoidance ports 122 are opened on both sides of the limiting enclosure 12.

[0069] In this embodiment, the spring 40 and the circumference of the solenoid valve 30 are spaced apart from the limiting frame 12 to avoid resonance between the solenoid valve 30 and the limiting frame 12 , thereby improving the noise reduction effect of the solenoid valve 30 .

[0070] In situations where the solenoid valve 30 is spaced apart from the limiting enclosure 12 with or without a defined perimeter, an air inlet 121 is provided at one end of the limiting enclosure 12. This allows the connecting pipe between the solenoid valve 30 and the negative pressure assembly 20 to communicate with the solenoid valve 30 through the air inlet 121 when the solenoid valve 30 is positioned within the limiting enclosure 12, thereby improving the convenience of air communication. Avoidance openings 122 are provided on both sides of the limiting enclosure 12. When the spring 40 and solenoid valve 30 are inserted into the limiting enclosure 12 through the top opening, the avoidance openings 122 provide clearance for the operator's hands or the mechanical arm of a mechanical device when the spring 40 and solenoid valve 30 are assembled with the limiting enclosure 12, thereby facilitating assembly of the spring 40 and the solenoid valve with the limiting enclosure 12.

[0071] In one embodiment of the present invention, the breast pump main unit further includes a flexible member, which is disposed between the solenoid valve 30 and the elastic member.

[0072] In this embodiment, the flexible member can be a rubber pad, foam pad, or other material with excellent shock absorption. The flexible member is designed to further absorb and isolate the vibration generated by the solenoid valve 30, providing a secondary noise reduction effect, further reducing the noise of the breast pump unit and improving user comfort. The shape and size of the flexible member are designed based on the contact surface between the solenoid valve 30 and the elastic member, ensuring a large contact area between the flexible member and the solenoid valve 30 and the elastic member, thereby achieving a better cushioning effect.

[0073] In terms of connection, the flexible member can be connected to the solenoid valve 30 and the elastic member by bonding, slotting, or bolts. In other embodiments, the flexible member can also be disposed between the solenoid valve 30 and the housing assembly 10, that is, the solenoid valve 30 is connected to the housing assembly 10 by both the elastic member and the flexible member.

[0074] The present invention also provides a breast pump comprising a milking assembly and a main unit. The specific structure of the main unit is similar to that of the above-described embodiments. Since the breast pump utilizes all the technical solutions of all the above-described main units, it possesses at least all the beneficial effects of the technical solutions of the above-described embodiments, which will not be further elaborated herein. The milking assembly comprises at least a milking container and a breast shield. The breast shield is configured to cover the breast and communicate with the milking container. A negative pressure assembly 20 communicates with the breast shield or the milking container to provide negative pressure during milking. Under the negative pressure, milk flows from the breast shield into the milking container.

[0075] The above are merely exemplary embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A breast pump host, characterized in that: The breast pump host comprises: A housing assembly, the housing assembly comprising a negative pressure port, the negative pressure port being configured to communicate with the milk suction assembly; A negative pressure component is disposed in the housing component and is used to provide negative pressure during milk extraction; a solenoid valve, the solenoid valve being located in the housing assembly and communicating with the negative pressure assembly and the negative pressure port; and An elastic member, the solenoid valve is connected to the housing assembly through the elastic member, and the elastic member is used to buffer the vibration generated by the solenoid valve along the axial direction.

2. The breast pump host according to claim 1, characterized in that: The elastic direction of the elastic member is arranged along the vibration direction of the solenoid valve.

3. The breast pump host according to claim 1, characterized in that: The elastic restoring direction of the elastic member is arranged along the vibration direction of the solenoid valve.

4. The breast pump host according to claim 2, characterized in that: The elastic member is sleeved outside the solenoid valve.

5. The breast pump host according to claim 2, characterized in that: When the solenoid valve is working, the elastic member abuts against or is fixedly connected to at least one end of the solenoid valve along the vibration direction.

6. The breast pump host according to claim 2, characterized in that: The housing assembly further includes a limiting member. When the solenoid valve is working, the elastic member is used to limit the vibration of the solenoid valve through the limiting member or be fixedly connected to the limiting member.

7. The breast pump according to any one of claims 1 to 6, wherein: The elastic member includes a spring, and the solenoid valve is connected to the housing assembly via the spring.

8. The breast pump main unit according to claim 7, characterized in that: The spring sleeve is arranged on the outside of the solenoid valve. When the solenoid valve is working, the elastic member is used to limit the vibration of the solenoid valve.

9. The breast pump host according to claim 7, characterized in that: The spring is square and matches the shape of the solenoid valve.

10. A breast pump, characterized in that: The breast pump comprises a milk suction component and a breast pump main unit according to any one of claims 1 to 9; the milk suction component is connected to the negative pressure component.

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