Drive assembly, drive device, breast pump main unit, and breast pump apparatus

Abstract

The present disclosure provides a drive assembly, a drive device, a breast pump main unit, and a breast pump apparatus, relating to the technical field of breast pumps. The drive assembly comprises a pump assembly and a cover. An air chamber is formed inside the pump assembly, and the cover is connected to the pump assembly. The cover comprises an air intake structure and an air outlet structure. The pump assembly and the cover enclose a gas distribution chamber. The air intake structure is in communication with the air chamber, and the air outlet structure is in communication with the gas distribution chamber. The gas distribution chamber is in communication with the air chamber. The volume of the gas distribution chamber is greater than that of the air outlet structure.

Description

Driving assembly, driving device, breast pump host and breast pumping device

[0001] This application claims the priority of the Chinese patent application No. 202411280899.7 filed with the Chinese Patent Office on September 12, 2024, entitled “Drive Component and Breast Pump Device”, the priority of the Chinese patent application No. 202422244124.6, entitled “Drive Component and Breast Pump Device”, and the priority of the Chinese patent application No. 202410383481.2 filed with the Chinese Patent Office on March 29, 2024, entitled “Drive Component, Breast Pump Host and Breast Pump Device”. The application claims priority to the Chinese patent application with application number 202420649930.9 and utility model title “Drive assembly, breast pump host and milk suction device”, the application claims priority to the Chinese patent application with application number 202410384678.8 and invention title “Breast pump host”, and the application claims priority to the Chinese patent application with application number 202420647366.7 and utility model title “Breast pump host”. The entire contents of the above six applications are incorporated into this application by reference. Technical Field

[0002] The present disclosure relates to the technical field related to breast pumps, and in particular to a drive assembly, a drive device, a breast pump host, and a milk suction device. Background Art

[0003] In the related art, a breast pump is connected to a host, which has an air pump. The air pump can be used to form negative pressure in the breast pump, so that the breast pump can extract milk. Summary of the Invention

[0004] According to a first aspect of the present disclosure, a drive assembly is provided, comprising a pump assembly and a cover. An air cavity is formed within the pump assembly, and the cover is connected to the pump assembly, the cover comprising an air inlet structure and an air outlet structure. The pump assembly and the cover enclose a gas distribution cavity, the air inlet structure communicates with the air cavity to provide an air inlet flow path when the pump assembly inhales air, the air outlet structure communicates with the gas distribution cavity, and the gas distribution cavity communicates with the air cavity to provide a channel for gas to be discharged from the pump assembly, and the volume of the gas distribution cavity is greater than the volume of the air outlet structure.

[0005] According to a second aspect of the present disclosure, a breast pump device is provided, comprising a breast pump assembly and a controller. The breast pump assembly is adapted to be placed against a breast to extract milk. The controller includes the drive assembly described in the above embodiment, wherein an air intake structure of the drive assembly is connected to the breast pump assembly to generate negative pressure in the breast pump assembly for extracting milk.

[0006] According to a third aspect of the present disclosure, a driving device is provided, which includes a controller. The controller includes a driving component, an air intake structure and an air outlet structure. The air intake structure is protrudingly arranged on the driving component, and the air outlet structure is recessed in the driving component. The driving component is used to provide power so that the air flow enters the interior of the driving component from the air intake structure and is discharged outside the driving component by the air outlet structure.

[0007] According to a fourth aspect of the present disclosure, a breast pump host is provided, comprising a housing and the driving device in the above embodiment.

[0008] A first communicating hole and a second communicating hole are arranged at intervals on one end surface of the shell, and the interior of the shell is connected to the outside of the shell through the first communicating hole and the second communicating hole; the driving device is arranged in the shell and is connected to the first communicating hole and the second communicating hole.

[0009] According to a fifth aspect of the present disclosure, a breast pumping device is provided, comprising a breast pumping assembly and the breast pump main unit in the above embodiment, wherein the breast pump main unit is used to adjust the air pressure in the breast pumping assembly to generate negative pressure in the breast pumping assembly for sucking milk.

[0010] According to a sixth aspect of the present disclosure, a breast pump device is provided, comprising a breast pump assembly and the driving device of the above embodiment, wherein the driving device is used to adjust the air pressure in the breast pump assembly to generate negative pressure in the breast pump assembly for sucking milk.

[0011] According to a seventh aspect of the present disclosure, a breast pump host is provided, comprising a control panel, a battery holder and a drive assembly.

[0012] The battery bracket and the control panel are stacked along the third direction, and the battery bracket is connected to the control panel. The battery bracket has a receiving portion for receiving the battery on a side facing away from the control panel.

[0013] The drive assembly and the battery holder are arranged side by side along the second direction, and the drive assembly is in communication with the control panel to provide suction for extracting milk under the control of the control panel; wherein the third direction is perpendicular to the second direction.

[0014] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0016] FIG1 is a schematic structural diagram of a first embodiment of a drive assembly disclosed herein;

[0017] FIG2 is a schematic cross-sectional view of a drive assembly according to an embodiment of the present disclosure;

[0018] FIG3 is a schematic structural diagram of a first embodiment of the cover disclosed herein;

[0019] FIG4 is a schematic structural diagram of a second embodiment of a drive assembly according to the present disclosure;

[0020] FIG5 is a schematic structural diagram of a second embodiment of the cover disclosed herein;

[0021] FIG6 is a schematic structural diagram of a third embodiment of a drive assembly according to the present disclosure;

[0022] FIG7 is a schematic structural diagram of a third embodiment of the cover disclosed herein;

[0023] FIG8 is a schematic structural diagram of an embodiment of a breast pumping device disclosed herein;

[0024] FIG9 is a schematic structural diagram of a controller according to an embodiment of the present disclosure;

[0025] FIG10 is a schematic cross-sectional view of a controller according to an embodiment of the present disclosure;

[0026] FIG11 is a schematic structural diagram of a valve plate according to an embodiment of the present disclosure;

[0027] FIG12 is a schematic structural diagram of a valve plate according to an embodiment of the present disclosure;

[0028] FIG13 is a schematic structural diagram of a solenoid valve assembly according to an embodiment of the present disclosure;

[0029] FIG14 is a schematic cross-sectional view of a solenoid valve assembly according to an embodiment of the present disclosure;

[0030] FIG15 is a schematic cross-sectional view of a solenoid valve assembly according to an embodiment of the present disclosure;

[0031] FIG16 is a schematic structural diagram of a connector according to an embodiment of the present disclosure;

[0032] FIG17 is a schematic structural diagram of a drive assembly according to an embodiment of the present disclosure;

[0033] FIG18 is a schematic structural diagram of a packaging shell according to an embodiment of the present disclosure;

[0034] FIG19 is a schematic structural diagram of a breast pump host according to an embodiment of the present disclosure.

[0035] FIG20 is a schematic structural diagram of a breast pump host according to an embodiment of the present disclosure;

[0036] FIG21 is a schematic structural diagram of a breast pump host according to an embodiment of the present disclosure;

[0037] FIG22 is a schematic structural diagram of a breast pumping device according to an embodiment of the present disclosure;

[0038] FIG23 is an exploded view of a breast pump main unit according to an embodiment of the present disclosure;

[0039] FIG24 is an exploded view of a breast pump main unit according to an embodiment of the present disclosure;

[0040] FIG25 is a schematic structural diagram of a breast pump host according to an embodiment of the present disclosure;

[0041] FIG. 26 is a schematic structural diagram of a light shield according to an embodiment of the present disclosure.

[0042] Explanation of Reference Numerals: 1000: driving assembly; 1100: pump assembly; 1110: air cavity; 1200: cover; 1400: gas distribution cavity; 1210: air inlet structure; 1220: air outlet structure; 1221: second through hole; 1500: gas guiding structure; 1510: first through hole; 2000: breast pump device; 2100: breast pump assembly; 2200: controller; 3000: driving assembly; 1300: valve plate; 1120: motor; 1130: cam; 1140: crankshaft; 1150: air pump housing; 1160: rubber membrane; 1310: first one-way valve; 1320: second one-way valve; 1222: sound-absorbing cotton; 3100: connecting piece; 3110: air outlet passage; 3120: First air inlet passage; 3130: Second air inlet passage; 3140: Central passage; 3121: First air inlet connector; 3131: Second air inlet connector; 3111: Air outlet connector; 3150: First sub-channel; 3160: First opening; 3170: First annular channel; 3180: First annular opening; 3200: Solenoid valve assembly; 3300: First solenoid valve; 3400: Second solenoid valve; 3410: Valve body; 3420: Valve core; 3430: Electromagnet; 3440: Spring; 4000: Breast pump unit; 4100: Housing; 4600: Encapsulating housing; 4300: Battery assembly; 4611: First positioning hole; 4320: Battery holder; 4400: Control panel; 4410: First hollow structure; 4411: Light source; 4412: Second positioning hole; 4320: Battery holder; 4500: Heat dissipation hole; 4511: Positioning portion; 4610: Step surface; 4700: Light shield; 4710: Light-transmitting structure; 4720: Second hollow structure; 4730: First positioning post; 4740: Second positioning post; 4800: Light guide; 4110: First sub-shell; 4120: Second sub-shell. DETAILED DESCRIPTION

[0043] The following description of exemplary embodiments of the present disclosure is made in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0044] Breast pumps in the related art generate a lot of noise during use, affecting the user experience. To address this technical issue, the present disclosure provides a drive assembly that, by providing a gas distribution chamber within the drive assembly, can reduce the speed at which gas is discharged from the drive assembly, thereby reducing the noise generated during gas discharge and improving the user experience.

[0045] As shown in Figures 1 to 6, an embodiment of the present disclosure provides a drive assembly 1000, including a pump assembly 1100 and a cover 1200. An air cavity 1110 is formed inside the pump assembly 1100, and the cover 1200 is connected to the pump assembly 1100. The cover 1200 includes an air inlet structure 1210 and an air outlet structure 1220. The pump assembly 1100 and the cover 1200 enclose a gas distribution cavity 1400. The air inlet structure 1210 communicates with the air cavity 1110 to provide an air inlet flow path when the pump assembly 1100 inhales air. The air outlet structure 1220 communicates with the gas distribution cavity 1400. The gas distribution cavity 1400 communicates with the air cavity 1110 to provide a channel for air to be discharged from the pump assembly 1100. The volume of the gas distribution cavity 1400 is greater than the volume of the air outlet structure 1220.

[0046] The drive assembly 1000 can be understood as a component of the controller 2200 in the breast pumping device 2000, providing the power for milk extraction. The pump assembly 1100 is the mechanical portion of the drive assembly 1000 that draws in and exhausts air. The pump assembly 1100 may include an air cavity 1110. The pump assembly 1100 mechanically changes the air pressure within the air cavity 1110. This change in air pressure within the air cavity 1110 affects the air pressure within the breast pump assembly 2100, creating a milk extraction environment within the breast pump assembly 2100 that resembles an infant's mouth.

[0047] Cover 1200 is connected to pump assembly 1100. Once connected, they enclose a gas distribution chamber 1400, as shown in FIG2 . A portion of gas distribution chamber 1400, as shown in FIG2 , is located within cover 1200, while another portion is located at the top of pump assembly 1100. In some embodiments, gas distribution chamber 1400 may be entirely located within cover 1200. Gas distribution chamber 1400 communicates with gas chamber 1110, allowing the gas flow within gas chamber 1110 to be discharged into gas distribution chamber 1400.

[0048] As shown in Figures 1 to 6, the cover 1200 is provided with an air inlet structure 1210 and an air outlet structure 1220. One end of the air inlet structure 1210 is connected to the milk suction assembly 2100, and the other end is in communication with the air cavity 1110 of the pump assembly 1100. When the pump assembly 1100 draws air, the air in the milk suction assembly 2100 enters the air cavity 1110 through the air inlet structure 1210. The air outlet structure 1220 is in communication with the gas distribution cavity 1400 and the external environment, respectively. For example, the air outlet structure 1220 can be formed on the wall of the cover 1200 and include one or more second through-holes 1221 for connecting the gas distribution cavity 1400 with the external environment. When the pump assembly 1100 discharges air, the air in the air cavity 1110 passes through the gas distribution cavity 1400 and is discharged to the external environment through the second through-holes 1221.

[0049] As shown in Figures 3, 5, and 7, the gas cavity 1110 can communicate with the gas distribution cavity 1400 via a gas guiding structure 1500. For example, in some embodiments, the drive assembly 1000 further includes a gas guiding structure 1500, which is located within the gas distribution cavity 1400. The gas guiding structure 1500 is provided with a first through hole 1510, and the gas cavity 1110 and the gas distribution cavity 1400 are communicated via the first through hole 1510, so that the gas flow can be smoothly discharged from the gas cavity 1110 into the gas distribution cavity 1400.

[0050] The volume of the gas distribution chamber 1400 can be set to be larger. For example, the rest of the cover 1200 except the air inlet structure 1210 and the air outlet structure 1220 are set as part of the gas distribution chamber 1400. Alternatively, the rest of the top of the pump assembly 1100 except the air cavity 1110 is set as part of the gas distribution chamber 1400. In some embodiments, the volume of the gas distribution chamber 1400 is larger than the volume of the air outlet structure 1220. Alternatively, the volume of the gas distribution chamber 1400 is larger than the amount of gas discharged during a single pressure relief of the pump assembly 1100. With such a configuration, when the air cavity 1110 is relieved of pressure, the gas flow rate will decrease after being discharged from the air cavity 1110 to the larger volume of the gas distribution chamber 1400, and the noise generated when the reduced flow rate of the air flow is discharged to the external environment through the air outlet structure 1220 will be reduced.

[0051] The interior of the gas-guiding structure 1500 may also include a channel for airflow, with a first through-hole 1510 extending through the channel, thereby connecting the channel to the gas distribution chamber 1400 via the first through-hole 1510. The airflow in the air cavity 1110 is first discharged into the channel, and then discharged into the gas distribution chamber 1400 through the first through-hole 1510. The channel for airflow can have a relatively large volume. For example, the volume within the channel can be greater than the amount of gas discharged during a single depressurization of the pump assembly 1100. With this arrangement, when the air cavity 1110 is depressurized, the airflow velocity will decrease after being discharged from the air cavity 1110 into the larger channel. This reduces the noise generated when the airflow with a reduced velocity is discharged into the gas distribution chamber 1400 through the first through-hole 1510.

[0052] According to an embodiment of the present disclosure, when a gas distribution chamber 1400 is provided in the drive assembly 1000, the airflow in the air cavity 1110 first enters the gas distribution chamber 1400, thereby buffering the airflow entering the gas distribution chamber 1400. The airflow in the gas distribution chamber 1400 then enters the external environment through the gas outlet structure 1220. This reduces the speed at which the airflow is discharged from the drive assembly 1000, reduces the noise generated during the discharge of the airflow, and improves the user experience. In addition, the volume of the gas distribution chamber 1400 is larger than that of the gas outlet structure 1220, which can better buffer the airflow entering the gas distribution chamber 1400, thereby further reducing the noise generated during the discharge of the airflow.

[0053] Based on the above embodiments, the present disclosure further provides different implementations of the drive assembly 1000 and the cover 1200 .

[0054] A drive assembly 1000 disclosed in one embodiment of the present disclosure is shown in FIG1 and FIG3 . FIG3 discloses a cover 1200 of the drive assembly 1000. The cover 1200 may have five first through-holes 1510, wherein the first through-hole 1510 located at the center is spaced the same as the spacing between each of the other first through-holes 1510. The cover 1200 may have five second through-holes 1221, wherein the second through-hole 1221 located at the center is spaced the same as the spacing between each of the other second through-holes 1221.

[0055] The arrangement of the five first through holes 1510 can be as shown in Figure 3, where four first through holes 1510 form a square, with the fifth first through hole 1510 located at the center of the square. This arrangement can reduce the mutual influence of the exhaust airflow between the first through holes 1510 and reduce the noise of the exhaust airflow. The arrangement of the five second through holes 1221 can refer to the arrangement of the five first through holes 1510 and will not be repeated here.

[0056] The relative position between the first through hole 1510 and the second through hole 1221 can be adjusted to maximize the path of the airflow from the first through hole 1510 to the second through hole 1221, so that the airflow enters the gas distribution cavity 1400 from the first through hole 1061, and is reduced in velocity by the gas distribution cavity 1400 before being discharged through the second through hole 1221. As shown in FIG3 , the relative position between the first through hole 1510 and the second through hole 1221 can have the following characteristics: the axial direction of the first through hole 1510 is perpendicular to the axial direction of the second through hole 1221. Of course, the relative position relationship between the first through hole 1510 and the second through hole 1221 can also be other ways, which are not limited here.

[0057] In an implementable solution, the axial direction of the first through hole 1510 is perpendicular to the axial direction of the second through hole 1221. Specifically, the axis at the air outlet of the first through hole 1510 is parallel to the height direction of the pump assembly 1100, and the axis of the first through hole 1510 is perpendicular to the height direction of the pump assembly 1100.

[0058] In some embodiments, as shown in Figure 3, five second through holes 1221 are formed on the first side wall of the cover 1200, the air intake structure 1210 is formed on the second side wall of the cover 1200, and the gas guiding structure 1500 includes a vertical section and an extension section. The five first through holes 1510 are located on the wall of the extension section away from the second through holes 1221. After the gas enters the air cavity 1110 from the air intake structure 1210 of the second side wall, it is discharged in sequence through the vertical section, the five first through holes 1510 of the extension section, the gas distribution cavity 1400 and the five second through holes 1221 of the first side wall.

[0059] The air intake structure 1210 and the second through hole 1221 are respectively disposed on two different side walls of the cover 1200 , which can reduce the volume of the cover 1200 .

[0060] As shown in Figure 3, the structure arranged side by side with the part of the air intake structure 1210 located in the gas distribution chamber 1400 is a vertical section, and the structure in which the first through hole 1510 is arranged is an extension section. Setting the first through hole 1510 in the extension section can increase the path length of the air flow flow channel in the gas guiding structure 1500, increase the accommodation volume of the channel, and reduce the air flow rate of the air flow entering the channel from the air cavity 1110. The position of the first through hole 1510 in the extension section can be adjusted. For example, the first through hole 1510 is arranged on the wall of the extension section away from the second through hole 1221 (for example, on the wall opposite to the air cavity 1110 in the figure), so that the air flow can be discharged from the first through hole 1510 and then enter the gas distribution chamber 1400, and then be discharged from the gas distribution chamber 1400 through the second through hole 1221 as much as possible.

[0061] In other embodiments, a portion of the air intake structure 1210 may protrude from the second sidewall of the cover 1200 to facilitate connection with the milk pump assembly. Another portion of the air intake structure 1210 may be arranged side by side with the vertical section to facilitate communication with the air cavity 1110.

[0062] Another embodiment of the present disclosure discloses a drive assembly 1000, as shown in Figures 4 and 5. Figure 5 discloses a cover 1200 of the drive assembly 1000. The cover 1200 has two first through-holes 1510, which are arranged in a single row along the first direction. There are multiple second through-holes 1221, and the multiple second through-holes 1221 are arranged in pairs on the side wall of the cover 1200. The straight line on which the axis of the second through-hole 1221 lies is not aligned with the straight line on which the first direction lies, or the straight line on which the axis of the second through-hole 1221 lies intersects with the straight line on which the first direction lies.

[0063] The first direction can be understood as the height direction in Figure 4 . The second through-holes 1221 can be shaped like the notches shown in Figures 4 and 5 , or they can be shaped like the through-holes in the aforementioned embodiments. The second through-holes 1221 arranged in pairs on the sidewalls of the cover 1200 can quickly reduce the gas pressure in the gas distribution chamber 1400, lowering the speed at which the airflow is discharged from the gas distribution chamber 1400, thereby further reducing the noise generated by the airflow discharge.

[0064] The number of multiple second through holes 1221 and their positional relationship can be adjusted according to the number of side walls of the cover 1200. For example, as shown in Figure 5, there are four pairs of second through holes 1221, and they are formed one-to-one on the four side walls of the cover 1200. In one embodiment, the two pairs of second through holes 1221 arranged opposite to each other can be symmetrically arranged.

[0065] In some embodiments, as shown in Figure 5, a plurality of second through holes 1221 are arranged in pairs on the four side walls of the cover 1200, the air intake structure 1210 is formed on one of the side walls of the cover 1200, and the gas guiding structure 1500 includes a vertical section, and the first through hole 1510 is located on the vertical section, wherein the gas enters the air cavity 1110 from the air intake structure 1210 on one of the side walls of the cover 1200, and is discharged in sequence through the two first through holes 1510 in the vertical section, the gas distribution cavity 1400 and the second through holes 1221 arranged in pairs on the four side walls of the cover 1200.

[0066] The relative position of the vertical section and the air intake structure 1210 can be adjusted. For example, in some embodiments, a portion of the air intake structure 1210 protrudes from the second sidewall of the lid 1200 to facilitate connection with the breast pump assembly. Another portion of the air intake structure 1210 can be positioned alongside the vertical section. This arrangement not only facilitates communication between the air cavity 1110 and the gas distribution cavity 1400, but also increases the volume of the gas distribution cavity 1400 within the lid 1200, further enhancing noise reduction.

[0067] Another embodiment of the present disclosure discloses a drive assembly 1000, as shown in Figures 6 and 7. Figure 7 discloses a cover 1200 of the drive assembly 1000. The cover 1200 has five first through-holes 1510, wherein the central first through-hole 1510 is spaced equidistant from the remaining first through-holes 1510. There are multiple second through-holes 1221, and the multiple second through-holes 1221 are arranged in pairs on the sidewall of the cover 1200.

[0068] The arrangement of the five first through holes 1510 can be as shown in Figure 7, where the four first through holes 1510 form a square, and the fifth first through hole 1510 is located at the center of the square. Such an arrangement can reduce the mutual influence of the exhaust airflow between adjacent first through holes 1510 and reduce the noise of the airflow discharge. The shape of the second through hole 1221 can be the notch shape shown in Figures 6 and 7. It can also be the shape of the through hole in the above embodiment. By arranging the second through holes 1221 in pairs on the side wall of the cover 1200, the air pressure in the gas distribution chamber 1400 can be quickly reduced, and the flow rate of the airflow discharged from the gas distribution chamber 1400 can be reduced.

[0069] The relative position between the first through-hole 1510 and the second through-hole 1221 can be adjusted. For example, as shown in FIG7 , the line on which the axis of the second through-hole 1221 lies is not aligned with the line on which the axis of the first through-hole 1510 lies, or the line on which the axis of the second through-hole 1221 lies intersects the line on which the axis of the first through-hole 1510 lies. This arrangement allows the gas to enter the gas distribution chamber 1400 after exiting the first through-hole 1510 as much as possible, avoiding direct exit from the second through-hole 1221.

[0070] The number of multiple second through holes 1221 and their positional relationship can be adjusted according to the number of side walls. For example, as shown in Figure 7, there are four pairs of second through holes 1221, which are formed one by one on the four side walls of the cover 1200, and the two pairs of second through holes 1221 arranged opposite to each other are symmetrically arranged.

[0071] In some embodiments, as shown in Figure 7, four pairs of second through holes 1221 are arranged in pairs on the four side walls of the cover 1200, the air intake structure 1210 is formed on one of the side walls of the cover 1200, the gas guide structure 1500 includes a vertical section and an extension section, and the five first through holes 1510 are located on the extension section. The air flow enters the air cavity 1110 from the air intake structure 1210 on one of the side walls of the cover 1200, and is discharged in sequence through the vertical section, the five first through holes 1510 of the extension section, the gas distribution cavity 1400 and the second through holes 1221 arranged in pairs on the four side walls of the cover 1200.

[0072] As shown in Figure 7 , a portion of the air intake structure 1210 can protrude beyond the second sidewall of the cover 1200 to facilitate connection with the milk extraction assembly. The structure arranged alongside the other portion of the air intake structure 1210 is a vertical segment. This arrangement reduces the volume of the cover 1200 and facilitates communication with the air cavity 1110. The structure in which the first through-hole 1510 is arranged is an extended segment. Placing the first through-hole 1510 in the extended segment increases the path length of the airflow channel within the air-guiding structure 1500, increasing the channel's capacity and reducing the velocity of air entering the channel from the air cavity 1110. In Figure 7 , the first through-hole 1510 is located on the bottom wall of the extended segment (i.e., on the side facing the pump assembly 1100). This maximizes the flow of air from the first through-hole 1510 into the gas distribution chamber 1400, where it is then discharged through the second through-hole 1221.

[0073] As shown in FIG8 , the present disclosure further provides a breast pumping device 2000, comprising a breast pumping assembly 2100 and a controller 2200. The breast pumping assembly 2100 is configured to be attached to a breast to extract milk. The controller 2200 includes the drive assembly 1000 described in any of the aforementioned embodiments. The air intake structure 1210 of the drive assembly 1000 is coupled to the breast pumping assembly 2100 to generate negative pressure within the breast pumping assembly 2100 for extracting milk.

[0074] The milking assembly 2100 and the controller 2200 can refer to the milking assembly and controller in any of the above-mentioned embodiments and will not be described in detail. The drive assembly 1000 and its associated cover 1200 can refer to the above-mentioned three different embodiments of the drive assembly 1000 and its associated cover 1200, or other drive assemblies 1000 or covers 1200 configured with a gas distribution chamber 1400 and capable of achieving corresponding known functions and alternative solutions.

[0075] In the related art, a breast pump assembly is connected to a main unit, which includes an air pump. The air pump is used to create negative pressure in the breast pump assembly, thereby enabling the breast pump assembly to extract milk. However, the air pump typically has an air inlet pipe and an air outlet pipe. Because both the air inlet pipe and the air outlet pipe protrude from the air pump, the air pump is relatively large, which in turn increases the size of the main unit connected to the breast pump assembly, making it inconvenient for users to operate and carry.

[0076] To address the aforementioned technical issues, the present disclosure provides a drive device, a breast pump, and a milking device. The drive device includes at least a controller. The controller includes a drive assembly, an air intake structure, and an air outlet structure. The air intake structure is protruding from the drive assembly, and the air outlet structure is recessed in the drive assembly. The drive assembly is configured to provide power, allowing airflow to enter the drive assembly from the air intake structure and be exhausted from the drive assembly by the air outlet structure. By employing a configuration in which the air outlet structure is recessed in the drive assembly for exhaust, the controller can be reduced in size, thereby reducing the size of the drive device and the breast pump, making the device more portable.

[0077] As shown in Figures 9 to 17, an embodiment of the present disclosure provides a drive device 3000, which includes at least a controller 2200. Controller 2200 includes a drive assembly 1000, an air intake structure 1210, and an air outlet structure 1220. The air intake structure 1210 is protruding from the drive assembly 1000, and the air outlet structure 1220 is recessed in the drive assembly 1000. The drive assembly 1000 is used to provide power, so that air flows from the air intake structure 1210 into the drive assembly 1000 and is discharged from the drive assembly 1000 through the air outlet structure 1220.

[0078] The controller 2200 can use an air pump, which can be of various types, such as a piston air pump and a diaphragm air pump. The drive assembly 1000 can be understood as a structure for drawing in and discharging gas, which can transport gas through the movement of its internal mechanical structure. For example, if the controller 2200 uses a piston air pump, the drive assembly 1000 transports gas through the reciprocating motion of the piston cylinder. If the controller 2200 uses a diaphragm air pump, the drive assembly 1000 transports gas through the reciprocating motion of the diaphragm.

[0079] The air intake structure 1210 is used to supply air to the drive assembly 1000. It can be a single piece integrally formed with the drive assembly 1000, or it can be two separate pieces detachably connected to the drive assembly 1000. The air intake structure 1210 protrudes from the drive assembly 1000. It can be understood that one end of the air intake structure 1210 is connected to the drive assembly 1000, and the other end extends to the outside of the drive assembly 1000. The air intake structure 1210 protruding from the drive assembly 1000 facilitates connection with the solenoid valve assembly 3200, piping, and other structures within the breast pump main unit 4000.

[0080] Gas outlet structure 1220 is used to discharge gas from drive assembly 1000. It can be any porous structure that connects the interior of drive assembly 1000 with the exterior of drive assembly 1000. Gas outlet structure 1220 is recessed in drive assembly 1000. This means that drive assembly 1000 is provided with a through hole connecting the interior and exterior of drive assembly 1000, but the exposed opening of the through hole at least does not protrude from the outer surface of drive assembly 1000. The recessed gas outlet structure 1220 in drive assembly 1000 can reduce the size of drive assembly 1000.

[0081] The opening and closing of the air inlet structure 1210 and the air outlet structure 1220 can be determined by the relevant valves in the drive assembly 1000. In other words, when the drive assembly 1000 is in operation, the ventilation state of the air inlet structure 1210 and the air outlet structure 1220 and the air cavity 1110 within the drive assembly 1000 can be controlled. For example, when the drive assembly 1000 is evacuating air, the air cavity 1110 within the drive assembly 1000 is disconnected from the air outlet structure 1220, and the air inlet structure 1210 is connected to the air cavity 1110, so that air can enter the air cavity 1110 of the drive assembly 1000 from the air inlet structure 1210 (the air cavity 1110 is the cavity that contains air when the drive assembly 1000 is evacuated). When the drive assembly 1000 compresses the gas within the air cavity 1110, i.e., when the drive assembly 1000 is exhausting, the air cavity 1110 is disconnected from the air inlet structure 1210 and connected to the air outlet structure 1220, allowing the gas in the drive assembly 1000 to be discharged from the air outlet structure 1220. In other words, when the drive assembly 1000 is operating, the air intake state of the air inlet structure 1210 and the exhaust state of the air outlet structure 1220 alternate. When the air inlet structure 1210 is flowing air, the air outlet structure 1220 is not flowing air. When the air inlet structure 1210 is not flowing air, the air outlet structure 1220 is flowing air.

[0082] The air inlet structure 1210 and the air outlet structure 1220 may be located at the same height as shown in FIG. 10 , or at different heights, which may be adjusted as needed.

[0083] When the drive device 3000 is in use, it is connected to the breast pump assembly 2100. As the drive assembly 1000 operates, it extracts air from the breast pump assembly 2100, which is positioned over the breast, through the air intake structure 1210. This creates a negative pressure in the breast pump assembly 2100, thereby promoting milk secretion from the breast and achieving the purpose of extracting milk using the breast pump assembly 2100. Simultaneously, the air extracted by the drive assembly 1000 is discharged through the air outlet structure 1220 to prevent the drive assembly 1000 from being subjected to excessive pressure.

[0084] According to an embodiment of the present disclosure, integrating the drive assembly 1000, the air intake structure 1210 and the air outlet structure 1220 on the controller 2200 can improve the airtightness of the drive assembly 1000. The air intake structure 1210 protrudes from the drive assembly 1000 to facilitate connection with other structures such as the solenoid valve assembly 3200 and pipelines. The air outlet structure 1220 is recessed in the drive assembly 1000. Compared with the protruding exhaust pipe in the related art, the volume of the controller 2200 can be reduced, and the volume of the drive device 3000 and the breast pump host 4000 can be reduced, making it easier to carry.

[0085] In some embodiments, the area of ​​the second cross-section of the air outlet structure 1220 is 5 to 10 times the area of ​​the first cross-section of the air inlet structure 1210. For example, the area of ​​the second cross-section may be 5, 6, 8, 9, 10, etc. times the area of ​​the first cross-section. The first cross-section is a cross section of the air inlet structure 1210 perpendicular to the axis of the air inlet structure 1210, and the second cross-section is a cross section of the air outlet structure 1220 perpendicular to the axis of the air outlet structure 1220.

[0086] It can be understood that the diameter of the air inlet structure 1210 is smaller than the diameter of the air outlet structure 1220 .

[0087] According to an embodiment of the present disclosure, the air outlet structure 1220 is larger than the air inlet, that is, the volume of the cavity in the air outlet structure is larger, which can improve the efficiency of the air outlet structure 1220 in discharging air, thereby reducing the noise generated when the controller 2200 is exhausted due to the small cavity of the air outlet structure.

[0088] In some embodiments, as shown in Figures 9 and 10 , sound-absorbing cotton 1222 is installed within the air outlet structure 1220 to reduce the vibration noise of the controller 2200 and the noise of the airflow discharged from the air outlet structure 1220. The sound-absorbing cotton 1222 can be specifically installed by bonding it to the side wall of the air outlet structure 1220 or by extruding it against the side wall of the air outlet structure 1220. Of course, other conventional fixing methods can also be used and are not specifically limited here.

[0089] In some embodiments, as shown in Figures 9, 10, and 17, the drive assembly 1000 includes a cover 1200, a pump assembly 1100, and a valve plate 1300 disposed between the cover 1200 and the pump assembly 1100. The valve plate 1300 defines an air cavity 1110; the pump assembly 1100 is configured to change the pressure in the air cavity 1110 to achieve air extraction and exhaust in the drive assembly 1000. Furthermore, an air inlet structure 1210 protrudes from the cover 1200, and an air outlet structure 1220 is recessed in the cover 1200. Both the air inlet structure 1210 and the air outlet structure 1220 are in communication with the air cavity 1110, that is, the air inlet structure 1210 and the air outlet structure 1220 are in communication through the air cavity 1110. During use, air flows from the air inlet structure 1210 into the air cavity 1110, and air flows from the air cavity 1110 into the air outlet structure 1220. In addition, to control the direction of airflow from the drive assembly 1000 through the intake structure 1210 and the exhaust structure 1220 during pumping and exhausting, two one-way valves (a first one-way valve 1310 and a second one-way valve 1320) are provided. The first one-way valve 1310 is provided between the air cavity 1110 and the intake structure 1210 to allow airflow from the intake structure 1210 to enter the air cavity 1110. The second one-way valve 1320 is provided between the air cavity 1110 and the exhaust structure 1220 to allow airflow from the air cavity 1110 to enter the exhaust structure 1220.

[0090] The cover 1200 can be understood as the structure covered with the valve plate 1300 in FIG. 10 .

[0091] Valve plate 1300 is disposed between cover 1200 and pump assembly 1100. Valve plate 1300 defines an air cavity 1110. Pump assembly 1100 also includes a rubber membrane 1160. Rubber membrane 1160 seals the opening of air cavity 1110 and can change the pressure in air cavity 1110 during the upward and downward movement of rubber membrane 1160. It should be understood that FIG10 only illustrates two portions of air cavity 1110. When rubber membrane 1160 moves downward, air cavity 1110 also includes a cavity portion located between the upper portion of rubber membrane 1160 and valve plate 1300. This cavity portion can connect the two portions indicated by reference numeral 1110. In the embodiment shown in FIG10 , air cavity 1110 is formed between valve plate 1300 and rubber membrane 1160. Taking the placement direction of the controller 2200 in FIG. 10 as a reference direction, when the rubber membrane 1160 moves downward, the pressure in the air cavity 1110 decreases, and when the rubber membrane 1160 moves upward, the pressure in the air cavity 1110 increases.

[0092] In some embodiments, a first one-way valve 1310 and a second one-way valve 1320 are respectively disposed on two opposite end surfaces of the valve plate 1300 .

[0093] A first one-way valve 1310 and a second one-way valve 1320 are spaced apart on the valve plate 1300. The first one-way valve 1310 is connected at both ends to the air inlet structure 1210 and the air cavity 1110, respectively. The first one-way valve 1310 is oriented from the air inlet structure 1210 to the air cavity 1110. The first one-way valve 1310 is designed to open when the pressure in the air cavity 1110 decreases, allowing gas to enter the air cavity 1110 through the air inlet structure 1210. The second one-way valve 1320 is connected at both ends to the air outlet structure 1220 and the air cavity 1110, respectively. The second one-way valve 1320 is designed to allow high-pressure gas in the air cavity 1110 to be discharged through the air outlet structure 1220 when the pressure in the air cavity 1110 increases.

[0094] According to an embodiment of the present disclosure, by providing a one-way valve structure, the ventilation state of the air inlet structure 1210 and the air outlet structure 1220 can be controlled.

[0095] The pump assembly 1100 is the power part of the controller 2200, which can adjust the pressure in the air chamber 1110. In some embodiments, as shown in FIG10, the pump assembly 1100 includes a motor 1120, a cam 1130, a crankshaft 1140, an air pump housing 1150, and a rubber membrane 1160. The cam 1130 and the crankshaft 1140 are arranged in the air pump housing 1150. The crankshaft 1140 is connected to the rotating shaft of the motor 1120 through the cam 1130. The rubber membrane 1160 is arranged at the end of the crankshaft 1140 away from the cam 1130. The rubber membrane 1160 is clamped between the air pump housing 1150 and the valve plate 1300. The cam 1130 is driven to rotate by the rotation of the rotating shaft of the motor 1120. The cam 1130 drives the crankshaft 1140 to perform reciprocating motion (i.e., undulating motion). The crankshaft 1140 drives the rubber membrane 1160 to perform reciprocating motion (i.e., undulating motion) synchronously, thereby adjusting the air pressure in the air cavity 1110 to make the air intake structure 1210 inhale or the air outlet structure 1220 exhaust.

[0096] There are many ways to connect the cover 1200, the valve plate 1300 and the pump assembly 1100, such as snap connection, fitting connection, or connecting the three by other structures (such as screws).

[0097] According to an embodiment of the present disclosure, the cover 1200, valve plate 1300, and pump assembly 1100 are provided independently of each other to facilitate the subsequent maintenance of the drive assembly 1000. The valve plate 1300 is provided with a first one-way valve 1310 and a second one-way valve 1320 to control the ventilation state between the air cavity 1110 and the air inlet structure 1210 and the air outlet structure 1220.

[0098] In some embodiments, the air inlet structure 1210 is protruding from the second sidewall of the cover 1200 , and the air outlet structure 1220 is recessed from the first sidewall of the cover 1200 into the cover 1200 .

[0099] The second sidewall and first sidewall of cover 1200 are different sides of cover 1200. For example, the second sidewall and first sidewall of cover 1200 can be two adjacent sides of cover 1200, thereby reducing the mutual influence between the intake and exhaust airflows, thereby reducing vibration and noise. Furthermore, the inlet structure 1210 and the outlet structure 1220 are provided on cover 1200 to optimize the structure of the pipelines in pump assembly 1100.

[0100] In some embodiments, as shown in FIG. 13 to FIG. 16 , the driving device 3000 further includes a solenoid valve assembly 3200 . The solenoid valve assembly 3200 can be understood as a structure disposed between the milk suction assembly 2100 and the driving assembly 1000 .

[0101] The solenoid valve assembly 3200 includes a connector 3100, a first solenoid valve 3300, and a second solenoid valve 3400. The first solenoid valve 3300 and the second solenoid valve 3400 are connected to the connector 3100. The connector 3100 includes an outlet passage 3110, a first inlet passage 3120, and a second inlet passage 3130. The outlet passage 3110 communicates with the inlet structure 1210, and at least one of the first inlet passage 3120 and the second inlet passage 3130 is configured to communicate with the milk pump assembly 2100. This allows the milk pump assembly 2100 to communicate with the air cavity 1110 within the drive assembly 1000, enabling the milk pump assembly 2100 to pump milk through the air pumping and exhausting of the drive assembly 1000. In addition, the first solenoid valve 3300 is used to control the flow between the outlet passage 3110 and the first inlet passage 3120, and the second solenoid valve 3400 is used to control the flow between the outlet passage 3110 and the second inlet passage 3130, to coordinate the connection between the first inlet passage 3120 and the second inlet passage 3130 and the milk suction assembly 2100. For example, when the first inlet passage 3120 is connected to the milk suction assembly 2100, the first solenoid valve 3300 controls the flow between the outlet passage 3110 and the first inlet passage 3120 to provide the negative pressure required for the milk suction assembly 2100 to suck milk; when the second inlet passage 3130 is connected to the milk suction assembly 2100, the second solenoid valve 3400 controls the flow between the outlet passage 3110 and the second inlet passage 3130 to provide the negative pressure required for the milk suction assembly 2100 to suck milk.

[0102] In an embodiment of the present application, the connecting member 3100 includes an air outlet passage 3110, which is simultaneously connected to the first air inlet passage 3120 and the second air inlet passage 3130. At this time, when the solenoid valve assembly 3200 is connected to the controller 2200, only one pipeline is required to connect the air outlet passage 3110 to the air inlet structure 1210.

[0103] In the prior art, when two solenoid valves are provided in a breast pump drive device 3000, each solenoid valve corresponds to an outlet passage and an inlet passage. Accordingly, the air pump needs to be provided with inlet pipes corresponding to both outlet passages to establish communication between the air pump and the solenoid valve assembly 3200. However, in the solution disclosed in this application, only one outlet passage 3110 is provided, thereby reducing the size of the solenoid valve assembly 3200. Furthermore, only one inlet structure 1210 is required to connect the controller 2200 to the solenoid valve assembly 3200, thus reducing the size of the drive device 3000. Furthermore, the smaller number of outlet passages 3110 can reduce vibration and noise caused by the outlet airflow.

[0104] The outlet passage 3110, the first inlet passage 3120, and the second inlet passage 3130 can all be disposed on the same side of the connector 3100, or on different sides. The distance between the outlet passage 3110 and the first inlet passage 3120 (i.e., the distance the gas travels) and the distance between the outlet passage 3110 and the second inlet passage 3130 can be the same or different.

[0105] In some embodiments, the first air inlet passage 3120 and the second air inlet passage 3130 are symmetrically arranged on both sides of the air outlet passage 3110 .

[0106] Such a configuration allows the gas to flow through the first air inlet passage 3120 and the second air inlet passage 3130 in the connecting piece 3100 for an equal distance. When the driving device 3000 connects the two milk suction components 2100, the negative pressure generated by the two milk suction components 2100 for sucking milk can be made the same, thereby improving the user experience.

[0107] The first solenoid valve 3300 can be understood as a structure disposed between the outlet passage 3110 and the first inlet passage 3120, and used to control the on / off state between the outlet passage 3110 and the first inlet passage 3120. The second solenoid valve 3400 can be understood as a structure disposed between the outlet passage 3110 and the second inlet passage 3130, and used to control the on / off state between the outlet passage 3110 and the second inlet passage 3130.

[0108] The switching states of the first solenoid valve 3300 and the second solenoid valve 3400 can be adjusted. For example, the switching states of the first solenoid valve 3300 and the second solenoid valve 3400 can be set to be the same, that is, when the first solenoid valve 3300 is open, the second solenoid valve 3400 is also open. Alternatively, the switching states of the first solenoid valve 3300 and the second solenoid valve 3400 can be set to be different, that is, when the first solenoid valve 3300 is open, the second solenoid valve 3400 is closed. This can also be understood as the first solenoid valve 3300 and the second solenoid valve 3400 being opened alternately.

[0109] The connection relationship between the connector 3100 and the first solenoid valve 3300 and the second solenoid valve 3400 can be various, for example, snap-fitting, plug-fitting, or fixing them by other structures (such as screws).

[0110] According to the embodiments of the present disclosure, by providing an outlet passage 3110 connected to the air intake structure 1210, and a first air intake passage 3120 and a second air intake passage 3130 connected to the breast pump assembly 2100, air passing through the first solenoid valve 3300 and the second solenoid valve 3400 can be discharged through the same outlet passage 3110 to the air intake structure 1210 of the controller 2200. This is equivalent to combining the air outlet passages of the two solenoid valves into one, reducing the number of air inlets on the connector 3100 and the number of pipes connected to the air inlets, thereby reducing the occupied volume. Furthermore, by providing the first solenoid valve 3300 and the second solenoid valve 3400, the first air intake passage 3120 and the second air intake passage 3130 can be controlled separately, allowing the user to express milk from one breast or both breasts simultaneously, meeting the user's different needs.

[0111] In some embodiments, the air outlet passage 3110 , the first air inlet passage 3120 , and the second air inlet passage 3130 are located on a side of the solenoid valve assembly 3200 that is away from the air inlet structure 1210 on the driving assembly 1000 .

[0112] As shown in Figure 14, the first solenoid valve 3300 and the second solenoid valve 3400 are located on the first side of the connecting member 3100, and the air outlet passage 3110, the first air inlet passage 3120 and the second air inlet passage 3130 are arranged on the second side of the connecting member 3100, and the first side of the connecting member 3100 and the second side of the connecting member 3100 are opposite to each other.

[0113] The positional relationship between the solenoid valve assembly 3200 and the drive assembly 1000 can be understood as follows: the first solenoid valve 3300 and the second solenoid valve 3400 are positioned near the side of the drive assembly 1000 where the air intake structure 1210 protrudes. At this point, the first side of the connector 3100 faces the side where the air intake structure 1210 protrudes. Accordingly, the air outlet passage 3110, the first air intake passage 3120, and the second air intake passage 3130 are located on the side of the solenoid valve assembly 3200 that is away from the air intake structure 1210 of the drive assembly 1000. That is, the second side of the connector 3100 faces away from the side where the air intake structure 1210 protrudes. This reduces the distance between the solenoid valve assembly 3200 and the drive assembly 1000, improves space utilization, and further reduces the volume of the drive device 3000. At the same time, referring to FIG. 17 , by adopting this arrangement, the air intake structure 1210 can be connected to the solenoid valve assembly 3200 by only one bend when arranged, thereby allowing the air flow in the air intake structure 1210 to flow more smoothly.

[0114] In some embodiments, as shown in Figures 14 to 16, the connecting part 3100 includes a first air inlet connector 3121, a second air inlet connector 3131, an air outlet connector 3111 and a part body, and the first air inlet connector 3121, the second air inlet connector 3131 and the air outlet connector 3111 are all connected to the part body; the first air inlet connector 3121 has a first air inlet passage 3120 inside, the second air inlet connector 3131 has a second air inlet passage 3130 inside, and the air outlet connector 3111 has an air outlet passage 3110 inside; the part body has a central passage 3140 extending along a third direction, and the air outlet passage 3110, the first air inlet passage 3120 and the second air inlet passage 3130 are respectively connected to the central passage 3140; the third direction is the arrangement and setting direction of the first solenoid valve 3300 and the second solenoid valve 3400. 14 and 16 , the third direction is the direction indicated by the y-axis in the three-dimensional coordinate system, the first direction is the direction indicated by the x-axis in the three-dimensional coordinate system, and the second direction is the direction indicated by the z-axis in the three-dimensional coordinate system; the third direction, the first direction, and the second direction are perpendicular to each other.

[0115] The main body of the device can be understood as a sheet-like structure connected to the first solenoid valve 3300 and the second solenoid valve 3400. The first air inlet connector 3121, the second air inlet connector 3131, and the air outlet connector 3111 can be integrally formed with the main body of the device, or they can be separate components connected to the main body of the device. In some embodiments, the first air inlet connector 3121, the second air inlet connector 3131, and the air outlet connector 3111 protrude from the main body to facilitate connection with the milk pump assembly 2100 and the controller 2200.

[0116] The central passage 3140 extending along the third direction of the component body can be understood as a passage running from left to right of the component body as shown in FIG14 . A portion of the central portion of the central passage 3140 is connected to the outlet passage 3110. The component body is provided with a first air inlet passage 3120 and a second air inlet passage 3130, both of which are arranged along the vertical direction of FIG14 . The first air inlet passage 3120 and the second air inlet passage 3130 are respectively located on the left and right sides of the outlet passage 3110. It can be understood that to facilitate the processing of the central passage 3140, in FIG6 , the central passage 3140 can be formed by drilling from the left side of the component body, and then the opening on the left side can be blocked with steel balls or the like.

[0117] In some embodiments, a first solenoid valve 3300 is connected between the first intake passage 3120 and the central passage 3140 to control the flow of air between the first intake passage 3120 and the central passage 3140. A second solenoid valve 3400 is connected between the second intake passage 3130 and the central passage 3140 to control the flow of air between the second intake passage 3130 and the central passage 3140. With this arrangement, the flow of air between the first intake passage 3120, the second intake passage 3130, and the central passage 3140 can be controlled by the first solenoid valve 3300 and the second solenoid valve 3400, respectively.

[0118] According to the embodiments of the present disclosure, the distances of gas flowing through the first air inlet passage 3120 and the second air inlet passage 3130 are equal, ensuring that the negative pressure generated by the milk extraction assembly 2100 connected to both passages is the same, further improving the user experience. The provision of the first air inlet connector 3121, the second air inlet connector 3131, and the air outlet connector 3111 facilitates connection between the drive device 3000, the milk extraction assembly 2100, and the controller 2200. Furthermore, compared to structures with multiple air outlet connectors 3111, this embodiment can reduce vibration and noise caused by the air outlet flow.

[0119] In some embodiments, the first solenoid valve 3300 and the second solenoid valve 3400 are connected to a first side of the component body, and the central passage 3140, the first air intake passage 3120 and the second air intake passage 3130 are located on a second side of the component body opposite to the first side.

[0120] As shown in Figure 14, the first side of the component body can be understood as the lower side of the component body, the second side of the component body can be the upper side of the component body, the first solenoid valve 3300 and the second solenoid valve 3400 are connected to the lower side of the component body, and the central passage 3140, the first air intake passage 3120 and the second air intake passage 3130 are arranged on the upper side of the component body.

[0121] According to the embodiments of the present disclosure, the structure of the solenoid valve assembly 3200 can be standardized, the length of the pipeline can be reduced, the space utilization rate can be improved, and the volume of the driving device 3000 can be reduced.

[0122] In some embodiments, please refer to Figures 14 and 15, the component body is provided with a first sub-channel 3150 extending along the first direction and a first annular channel 3170 arranged around the first sub-channel 3150; the first sub-channel 3150 and the first annular channel 3170 are located on the side of the central passage 3140 facing the first solenoid valve 3300, and the first sub-channel 3150 is connected to the central passage 3140, and the end of the first sub-channel 3150 away from the central passage 3140 has a first opening 3160; the first air intake passage 3120 extends to be connected to the first annular channel 3170, and the end of the first annular channel 3170 away from the first air intake passage 3120 has a first annular opening 3180; the valve core 3420 of the first solenoid valve 3300 can move relative to the component body to close the first opening 3160 and the first annular opening 3180, or to connect the first opening 3160 and the first annular opening 3180.

[0123] As shown in Figures 14 and 15, the main body of the component has a first sub-channel 3150 along the up-down direction (first direction), a first annular channel 3170 is provided around the first sub-channel 3150, the upper end of the first sub-channel 3150 is connected to the central passage 3140, the lower end of the first sub-channel 3150 is provided with a first opening 3160, the upper end of the first annular channel 3170 is connected to the first air intake passage 3120, the lower end of the first annular channel 3170 is provided with a first annular opening 3180, and the first solenoid valve The valve core 3420 of the first solenoid valve 3300 can move up and down relative to the main body. When the valve core 3420 of the first solenoid valve 3300 moves upward and abuts the first opening 3160 and the first annular opening 3180, the first opening 3160 and the first annular opening 3180 are closed, that is, the first sub-channel 3150 and the first annular channel 3170 are disconnected. Consequently, gas cannot flow through the first air inlet passage 3120 (i.e., the solenoid valve is in the closed state), and thus, a negative pressure environment cannot be created in the breast pump assembly 2100. When the valve core 3420 of the first solenoid valve 3300 moves downward, a gap is formed between the valve core 3420 of the first solenoid valve 3300 and the first opening 3160 and the first annular opening 3180 (as shown in FIG. 15 ). The first sub-channel 3150 communicates with the first annular channel 3170 through the gap (i.e., the solenoid valve is in the open state), allowing gas to flow through the first air inlet passage 3120. In some embodiments, as shown in FIG14 , the solenoid valve on the left side of FIG14 is in an open state, and the solenoid valve on the right side of FIG14 is in a closed state.

[0124] In some embodiments, as shown in Figures 14 and 15 , the first solenoid valve 3300 may include a valve body 3410, a valve core 3420, an electromagnet 3430, and a spring 3440. The valve core 3420 is slidably assembled in a chamber of the valve body 3410. The spring 3440 is disposed in the chamber at an end away from the first opening 3160 and connected to the valve core 3420. The electromagnet 3430 is disposed in the chamber at an end away from the first opening 3160. When the magnet is energized, a suction force is generated that attracts the valve core 3420, causing the valve core 3420 to move downward and compress the spring 3440, thereby connecting the first opening 3160 and the first annular opening 3180. When the magnet is de-energized, the spring 3440 releases its elastic force, pushing the valve core 3420 upward, thereby closing the first opening 3160 and the first annular opening 3180. The configuration and structure of the second solenoid valve 3400 may be the same as those of the first solenoid valve 3300. For details, please refer to the above embodiment and will not be repeated here.

[0125] According to an embodiment of the present disclosure, the solenoid valve assembly 3200 may be controlled to be opened or closed.

[0126] In some embodiments, please refer to Figures 14 and 15, the component body is provided with a second sub-channel extending along the first direction and a second annular channel arranged around the second sub-channel; the second sub-channel and the second annular channel are located on the side of the central passage 3140 facing the second solenoid valve 3400, and the second sub-channel is connected to the central passage 3140, and the second sub-channel has a second opening on the end away from the central passage 3140; the second air intake passage 3130 extends to be connected to the second annular channel, and the second annular channel has a second annular opening on the end away from the second air intake passage 3130; the valve core 3420 of the second solenoid valve 3400 can move relative to the component body to close the second opening and the second annular opening, or to connect the second opening and the second annular opening.

[0127] Here, referring to the configuration and description of the above embodiment, the same structure and configuration relationship of the second sub-channel and the second annular channel can be obtained by analogy.

[0128] In some embodiments, as shown in Figures 13 to 16, the air outlet connector 3111 extends along a first direction perpendicular to the third direction, the first air inlet connector 3121 and the second air inlet connector 3131 extend along a second direction perpendicular to the third direction, respectively, and the second direction is arranged perpendicular to the first direction.

[0129] 14 and 16 , the third direction is the direction indicated by the y-axis in the three-dimensional coordinate system, the first direction is the direction indicated by the x-axis in the three-dimensional coordinate system, and the second direction is the direction indicated by the z-axis in the three-dimensional coordinate system; the third direction, the first direction, and the second direction are perpendicular to each other.

[0130] As shown in FIG16 , the air outlet connector 3111 , the first air inlet connector 3121 and the second air inlet connector 3131 are respectively located on two mutually perpendicular end faces of the component body.

[0131] According to the embodiment of the present disclosure, the air outlet connector 3111 and the first air inlet connector 3121 or the second air inlet connector 3131 can be extended to different directions respectively to facilitate connection with pipelines, other components or devices. At the same time, the air outlet connector 3111, the first air inlet connector 3121 and the second air inlet connector 3131 are arranged far away from each other so that the pipelines, other components or devices can be arranged in different directions, thereby improving the space utilization of the solenoid valve assembly 3200 and reducing the noise generated by the solenoid valve assembly 3200.

[0132] In some embodiments, the air intake structure 1210 of the controller 2200 is connected to the air outlet passage 3110 of the solenoid valve assembly 3200 via a silicone tube, and the first air intake passage 3120 and the second air intake passage 3130 of the solenoid valve assembly 3200 are connected to the first communication hole and the second communication hole, respectively, via silicone tubes. The provision of silicone tubes allows the arrangement of the controller 2200 and the solenoid valve assembly 3200 to be as compact as possible.

[0133] In the related art, the air pump and battery of the breast pump main unit are placed side by side, and the circuit board of the breast pump main unit is usually set on top of the air pump. In order to prevent the vibration of the air pump from affecting the main unit, a separate space for placing the main unit needs to be set on the top of the air pump, which results in a larger size of the breast pump main unit. However, the larger breast pump main unit is inconvenient for users to grasp and operate when using it, and the user experience is poor.

[0134] In order to solve the above-mentioned technical problems, an embodiment of the present disclosure provides a breast pump main unit. The breast pump main unit includes a control panel, a battery holder, and a drive assembly. The battery holder and the control panel are stacked along a third direction, and the battery holder is connected to the control panel. The side of the battery holder facing away from the control panel has a receiving portion for accommodating the battery assembly; the drive assembly and the battery holder are arranged side by side along a second direction, and the drive assembly is communicatively connected to the control panel to provide suction for extracting milk under the control of the control panel; wherein the third direction is perpendicular to the second direction. Through any embodiment of the present disclosure, the size of the breast pump main unit in the third direction can be reduced, thereby reducing the volume of the breast pump main unit, making it easier for users to grasp and operate, and improving the user experience.

[0135] As shown in FIG. 19 and FIG. 20 , the embodiment of the present disclosure further provides a breast pump host 4000 .

[0136] In one embodiment, the breast pump main unit 4000 includes a housing 4100 and the driving device 3000 in any of the above embodiments.

[0137] A first communicating hole and a second communicating hole are arranged at intervals on one end surface of the shell 4100, and the interior of the shell 4100 is connected to the outside of the shell 4100 through the first communicating hole and the second communicating hole; the driving device 3000 is arranged in the shell 4100 and is connected to the first communicating hole and the second communicating hole.

[0138] The shape of the housing 4100 can be adjusted to accommodate the driving device 3000. The shapes and diameters of the first and second communication holes can be adjusted to accommodate their respective communication with the air intake passages in the driving device 3000.

[0139] The structure and description of the driving device 3000 may refer to any of the above embodiments and will not be repeated here.

[0140] According to an embodiment of the present disclosure, by integrating a smaller driving device 3000 into the housing 4100 of the breast pump host 4000, the volume of the housing 4100 can be reduced, that is, the volume of the breast pump host 4000 can be reduced, so as to facilitate the user's carrying and operation.

[0141] In one embodiment, a packaging shell 4600 is provided inside the shell 4100, and the interior of the packaging shell 4600 is used to encapsulate the driving device 3000 (as shown in Figures 18 and 21); a third connecting hole and a fourth connecting hole are provided at intervals on one end face of the packaging shell 4600, the third connecting hole is connected to the first connecting hole, and the fourth connecting hole is connected to the second connecting hole.

[0142] It can be understood that the controller 2200 and the solenoid valve assembly 3200 are both arranged in the internal cavity of the packaging shell 4600, and the first air intake passage 3120 and the second air intake passage 3130 of the solenoid valve assembly 3200 are respectively connected to the third connecting hole and the fourth connecting hole of the packaging shell 4600, thereby facilitating connection with the milk suction assembly 2100.

[0143] According to an embodiment of the present disclosure, the controller 2200 and the solenoid valve assembly 3200 are integrated into the packaging shell 4600, which standardizes the arrangement of parts inside the breast pump host 4000, improves space utilization, and facilitates disassembly and replacement.

[0144] In some embodiments, sound-absorbing cotton is provided between the outer peripheral surface of the driving device 3000 and the inner side wall of the packaging shell 4600 to absorb the vibration of the driving device 3000 and reduce noise.

[0145] In some embodiments, sound-absorbing cotton is provided between the outer peripheral surface of the packaging shell 4600 and the inner side wall of the shell 4100 to absorb the vibration of the packaging shell 4600 and reduce noise.

[0146] In some embodiments, sound-absorbing cotton is arranged between the outer peripheral surface of the driving device 3000 and the inner wall of the packaging shell 4600, and sound-absorbing cotton is arranged between the outer peripheral surface of the packaging shell 4600 and the inner wall of the shell 4100 to absorb the vibration of the driving device 3000 and the packaging shell 4600 and reduce noise.

[0147] In some embodiments, as shown in FIG21 , the housing 4100 has a snap-fit ​​groove, and the packaging housing 4600 has a snap-fit ​​protrusion for snapping into the snap-fit ​​groove;

[0148] The packaging shell 4600 is further provided with a first positioning hole 4611 , and the shell 4100 is provided with a first positioning post (not shown in the figure), which is inserted into the first positioning hole 4611 .

[0149] The size of the snap-fitting groove can match the size of the packaging housing 4600 to achieve snap-fit ​​connection between the two. The first positioning hole 4611 and the first positioning post can be used to achieve positioning during installation. The first positioning hole 4611 can be a round hole, and the first positioning post can be a cylindrical column. In addition, the first positioning post can be made of a shock-absorbing material such as silicone. The number and position of the first positioning holes 4611 and the first positioning post can be set according to actual conditions.

[0150] According to an embodiment of the present disclosure, the packaging housing 4600 may be further fixed in the housing 4100 to prevent it from shaking or displacement.

[0151] In some embodiments, the shell 4100 has a first sub-shell and a second sub-shell, the edge of the first sub-shell is provided with a first snap-fit ​​portion, the edge of the second sub-shell is provided with a second snap-fit ​​portion, the first snap-fit ​​portion is snap-fitted to the second snap-fit ​​portion, and the driving device 3000 is provided between the first sub-shell and the second sub-shell.

[0152] The first sub-shell and the second sub-shell may be shell-shaped structures, or the first sub-shell may be a cover-shaped structure and the second sub-shell may be a shell-shaped structure, or the first sub-shell may be a shell-shaped structure and the second sub-shell may be a cover-shaped structure.

[0153] The first engaging portion and the second engaging portion may have various engaging structures. For example, the first engaging portion includes a hook, and the second engaging portion includes a slot, and the hook is engaged with the slot.

[0154] According to the embodiment of the present disclosure, the housing 4100 can be easily assembled and disassembled, the efficiency of assembly and disassembly can be improved, and the maintenance of the breast pump host 4000 can be facilitated.

[0155] In some embodiments, the breast pump main unit 4000 further includes a control panel and a battery assembly 4300 located within the housing 4100. The control panel is connected to the battery assembly 4300 and the driving device 3000, respectively. The battery assembly 4300 is used to provide current, and the control panel is used to send electrical signals to the driving device 3000. The electrical signals include electrical control signals that control the alternating on / off switching of the first solenoid valve 3300 and the second solenoid valve 3400, and electrical control signals that control the simultaneous on / off switching of the first solenoid valve 3300 and the second solenoid valve 3400.

[0156] Battery assembly 4300 is the power supply. It can be connected to the control panel in a pluggable manner. This allows for routine maintenance or replacement of battery assembly 4300, allowing the battery assembly 4300 to be disconnected from the control panel and reconnected when needed. This pluggable connection facilitates routine maintenance and replacement of battery assembly 4300, improving assembly and disassembly efficiency.

[0157] The battery assembly 4300 is located in the housing 4100, and its position relative to the interior space of the housing 4100 can be adjusted as needed. For example, as shown in FIG21 , the battery assembly 4300 is located on the left side of the housing 4100. Alternatively, the battery assembly 4300 can be located on the right side, in the upper half, in the lower half, or in the center of the housing 4100 in FIG21 .

[0158] The battery assembly 4300 is snap-fitted to the housing 4100. A variety of snap-fitting methods are possible, such as a snap-fitting hook provided in the housing 4100 that snaps into the hook. The battery assembly 4300 can be snap-fitted to the housing 4100 directly or through other structures. The snap-fitting connection between the battery assembly 4300 and the housing 4100 facilitates assembly and disassembly, improves assembly and disassembly efficiency, and facilitates routine maintenance.

[0159] In some embodiments, as shown in FIG21 , a battery holder 4320 is provided on the housing 4100, and the battery assembly 4300 is engaged with the battery holder 4320. The battery holder 4320 may be a shell-like structure, and the edge of the battery assembly 4300 may be engaged with the edge of the battery holder 4320. In other words, the battery assembly 4300 is connected to the housing 4100 via the battery holder 4320. The battery holder 4320 and the housing 4100 may also be fixed by an engaging connection, or by other connection methods. By providing the battery holder 4320, the battery assembly 4300 can be further fixed, and at the same time, the battery assembly 4300 can be protected from damage.

[0160] The control panel 4400 may include buttons, touch switches, etc., to facilitate user control of the control keys of the control panel 4400. Alternatively, the control panel 4400 may be understood as a combination of the buttons on the housing 4100 and the display screen. The control panel 4400 may be integrally formed with the housing 4100, or may be two separate components connected to each other.

[0161] According to the disclosed embodiment, the user operates the control panel 4400 and then clicks on the control panel 4400 to adjust the different operating states of the breast pump main unit 4000, which facilitates use and improves the user experience. The battery assembly 4300 is snap-fitted into the housing 4100, facilitating quick assembly and disassembly of the battery assembly 4300, improving assembly and disassembly efficiency and facilitating daily maintenance for the user.

[0162] In some embodiments, the control panel and the housing 4100 are two independent parts connected to each other, and the control panel 4400 is disposed between the housing 4100 and the packaging housing 4600 .

[0163] In another embodiment, as shown in FIG. 23 and FIG. 24 , a breast pump host 4000 includes a control panel 4400 , a battery holder 4320 and a driving assembly 1000 .

[0164] The battery holder 4320 and the control panel 4400 are stacked along a third direction, and the battery holder 4320 is connected to the control panel 4400. The side of the battery holder 4320 facing away from the control panel 4400 has a receiving portion for accommodating the battery assembly 4300. The drive assembly 1000 and the battery holder 4320 are arranged side by side along a second direction, and the drive assembly 1000 is communicatively connected to the control panel 4400 to provide suction for extracting milk under the control of the control panel 4400. The third direction is perpendicular to the second direction.

[0165] The third direction can be understood as the direction of the z-axis in the three-dimensional coordinate system in Figure 23 (i.e., the height direction of the breast pump host 4000), and the second direction can be understood as the direction of the y-axis in the three-dimensional coordinate system in Figure 23 (i.e., the length direction of the breast pump host 4000).

[0166] Regarding the position of the control panel 4400 relative to the drive assembly 1000, taking FIG23 as an example, the control panel 4400 can be located entirely on the left side of the drive assembly 1000, or partially on the left side of the drive assembly 1000 and partially on the right side of the drive assembly 1000. For example, the portion of the control panel 4400 containing the main electronic components can be located on the left side of the drive assembly 1000, while the portion of the control panel 4400 containing the electronic components for lighting or the portion used to secure the control panel 4400 can be located on the right side.

[0167] The battery holder 4320 and the driving assembly 1000 are arranged along the length direction of the breast pump host 4000. Taking Figure 23 as an example, the battery holder 4320 is located on the left side of the breast pump host 4000, and the driving assembly 1000 is located on the right side of the breast pump host 4000.

[0168] The battery holder 4320 can be understood as a structure with an internal chamber, which serves as the housing for the battery assembly 4300. The housing can accommodate a small portion of the battery assembly 4300, or it can accommodate the majority of the battery assembly 4300. As shown in FIG23 , the housing can accommodate approximately half the volume of the battery assembly 4300. By configuring the battery holder 4320 to accommodate a portion of the battery assembly 4300 while the remaining portion is exposed outside the housing, heat generated by the battery assembly 4300 during operation of the breast pump unit 4000 can be effectively dissipated through the portion of the battery assembly 4300 exposed outside the housing, preventing the battery assembly 4300 from overheating.

[0169] The battery holder 4320 and the control panel 4400 can be respectively provided with mutually compatible snap-fit ​​structures to achieve connection, or the battery holder 4320 and the control panel 4400 can be indirectly connected through other connection structures, such as screws passing through the control panel 4400 to connect the battery holder 4320, thereby achieving the connection between the battery holder 4320 and the control panel 4400.

[0170] The battery holder 4320 and the battery assembly 4300 can be connected in various ways, for example, the battery assembly 4300 can be directly clamped in the battery holder 4320, or the two can be connected by an adaptive connection structure. For example, in one embodiment, a third engaging portion for engaging the battery assembly 4300 is provided on the side of the battery holder 4320 facing away from the control panel 4400. After the battery assembly 4300 is loaded into the receiving portion of the battery holder 4320, the third engaging portion is engaged with the battery assembly 4300. The third engaging portion can be a structure similar to a hook, hooked on the side wall or edge of the battery assembly 4300. According to the embodiment of the present disclosure, the connection between the battery holder 4320 and the battery assembly 4300 can be reinforced to prevent the battery assembly 4300 from shaking during use of the breast pump host 4000.

[0171] The drive component 1000 is a device that can generate suction, which is in communication with the control panel 4400. When the user operates the breast pump host 4000 to work, the control panel 4400 transmits an electrical signal to the drive component 1000, and the drive component 1000 performs milk extraction according to the electrical signal instructions.

[0172] The drive assembly 1000 can be positioned flush with the battery holder 4320 or spaced apart, and this can be adjusted. A sound-absorbing foam can also be placed between the drive assembly 1000 and the battery holder 4320 to prevent vibrations from the drive assembly 1000 from being transmitted to the battery holder 4320 and to eliminate noise from the drive assembly 1000.

[0173] The battery assembly 4300 is a device that provides power to the control panel 4400 and the drive assembly 1000. It can be connected to the control panel 4400 and the drive assembly 1000 separately, or it can be connected only to the control panel 4400. The control panel 4400 transmits the power to the drive assembly 1000 after voltage conversion. The battery assembly 4300 and the control panel 4400 can be connected in a pluggable manner or fixedly.

[0174] When using the breast pump host 4000, the battery assembly 4300 is installed in the accommodating portion, the driving assembly 1000 is connected to one end of the milk suction assembly 2100, and the other end of the milk suction assembly 2100 is covered on the breast. As the user operates the control panel 4400, the control panel 4400 controls the driving assembly 1000 to absorb the gas in the other end of the milk suction assembly 2100, so that a negative pressure environment is formed in the other end of the milk suction assembly 2100. The milk sucked in the negative pressure environment flows into the milk storage container of the milk suction assembly 2100, completing the milk suction work.

[0175] According to the embodiments of the present disclosure, by arranging the control panel 4400, battery holder 4320, and battery assembly 4300 along the third direction, the dimensions of the breast pump body 4000 in the third direction can be reduced, thereby reducing the volume of the breast pump body 4000 and making it easier for the user to operate and grip. By placing the battery holder 4320 between the battery assembly 4300 and the control panel 4400, heat generated by the battery assembly 4300 can be prevented from being directly transferred to the control panel 4400 and causing damage thereto.

[0176] In some embodiments, as shown in FIG. 23 to FIG. 25 , the battery holder 4320 is provided with heat dissipation holes 4500 so that the heat generated by the battery assembly 4300 is dissipated from the inside of the accommodation portion to the outside of the accommodation portion through the heat dissipation holes 4500 .

[0177] The setting position of the heat dissipation hole 4500 can be adjusted. For example, the battery holder 4320 has a top wall and a peripheral side wall. The heat dissipation hole 4500 can be set on the top wall, or on the peripheral side wall, or part of it can be set on the top wall and the other part can be set on the peripheral side wall.

[0178] The number of the heat dissipation hole 4500 can be one or more. For example, a larger heat dissipation hole 4500 is provided on the top of the battery holder 4320, or a plurality of heat dissipation holes 4500 arranged at intervals are provided on the top of the battery holder 4320.

[0179] According to the embodiment of the present disclosure, by providing the heat dissipation holes 4500 , it is possible to avoid the battery assembly 4300 from being overheated and causing safety hazards.

[0180] In some embodiments, as shown in Figures 23 and 24, the control panel 4400 is provided with a first hollow structure 4410, and the driving assembly 1000 at least partially passes through the first hollow structure 4410 and is exposed; wherein, the first hollow structure 4410 is located outside the area where the control panel 4400 and the battery holder 4320 overlap.

[0181] The control panel 4400 may include two parts, one part being located on one side of the battery holder 4320, and the other part being located on one side of the drive assembly 1000 and having a first hollow structure 4410. The control panel 4400 located on the side of the battery holder 4320 may be provided with the main control components of the breast pump host 4000, while the control panel 4400 having the first hollow structure 4410 may be provided with the executive components of the breast pump host 4000, such as electronic components for lighting.

[0182] First hollow structure 4410 can be understood as an opening in a portion of the control panel 4400 located on one side of the drive assembly 1000. A portion of the drive assembly 1000 passes through this opening and protrudes from the plane where the control panel 4400 is located. Taking Figure 23 as an example, the upper half of the drive assembly 1000 can pass through the first hollow structure 4410 and protrude from the plane where the control panel 4400 is located. The size of this opening can be adapted to the size of the portion of the drive assembly 1000, or slightly larger than the size of the portion of the drive assembly 1000.

[0183] According to the embodiments of the present disclosure, the drive assembly 1000 passes through the first hollow structure 4410 of the control panel 4400, eliminating the need for a separate space on top of the drive assembly 1000 for mounting the control panel 4400. This further reduces the size of the breast pump 4000 in the third direction. Furthermore, the first hollow structure 4410, which is positioned over the drive assembly 1000, further secures the control panel 4400 and improves its stability.

[0184] In some embodiments, as shown in Figures 23 to 25, the drive assembly 1000 includes a packaging shell 4600, which is a stepped structure; wherein the packaging shell 4600 partially passes through the first hollow structure 4410, and the stepped surface 4610 of the packaging shell 4600 abuts against the control panel 4400.

[0185] The packaging shell 4600 of the driving assembly 1000 is a structure for loading components in the driving assembly 1000. By providing the packaging shell 4600, the layout of the components can be further planned to improve space utilization.

[0186] Taking FIG. 23 as an example, the packaging shell 4600 can be understood as having a first section (the upper portion of the packaging shell 4600 in FIG. 23) and a second section (the lower portion of the packaging shell 4600 in FIG. 23) interconnected along a third direction, wherein the top of the first section passes through the first hollow structure 4410, and the bottom of the first section is connected to the top of the second section, wherein at least the top of the second section is larger than the bottom of the first section, thereby forming a step structure at the connection between the second section and the first section, the end surface of which is also the step surface 4610. After the top of the first section passes through the first hollow structure 4410, the control panel 4400 rests on the step surface 4610, which can also be understood as the control panel 4400 resting on the end surface of the top of the second section.

[0187] The step structure may be located on one side of the packaging shell 4600 or on multiple sides.

[0188] In some embodiments, the dimension of the second section in the third direction is equal to the sum of the dimensions of the battery holder 4320 and the battery assembly 4300 in the third direction after the battery holder 4320 accommodates the battery assembly 4300, so that the control panel 4400 located on one side of the battery holder 4320 and the control panel 4400 having the first hollow structure 4410 are on the same plane.

[0189] According to an embodiment of the present disclosure, by providing a step structure, after the driving assembly 1000 passes through the first hollow structure 4410 , it can rest on the step surface 4610 , thereby further improving the stability of the control panel 4400 .

[0190] In some embodiments, the outer surface of the packaging shell 4600 is provided with sound-absorbing cotton to absorb the vibration and noise of the driving assembly 1000.

[0191] In some embodiments, as shown in Figures 23 to 25, the drive assembly 1000 also includes a pump assembly 1100 and a solenoid valve assembly 3200 disposed in the packaging shell 4600; wherein the pump assembly 1100 is located on a side of the packaging shell 4600 close to the battery holder 4320, and the solenoid valve assembly 3200 is located on a side of the packaging shell 4600 away from the battery holder 4320; an air intake structure 1210 is provided on the pump assembly 1100, and the air intake structure 1210 is located on a side of the pump assembly 1100 away from the battery holder 4320; and the air intake structure 1210 extends along the second direction; an air outlet passage 3110 is provided on the solenoid valve assembly 3200, and the air outlet passage 3110 is located at an end of the solenoid valve assembly 3200 away from the battery holder 4320, and the air outlet passage 3110 extends along the first direction; the air intake structure 1210 is connected to the air outlet passage 3110 through a pipe, and the pipe extends along the second direction, wherein the first direction is perpendicular to the third direction and the second direction.

[0192] The first direction can be understood as the direction of the x-axis of the three-dimensional coordinate system in FIG. 23 (ie, the width direction of the breast pump main unit 4000 ).

[0193] The drive assembly 1000 also includes a pump assembly 1100 and a solenoid valve assembly 3200 located within the housing 4600. The pump assembly 1100 can be understood as providing suction, while the solenoid valve assembly 3200 can be understood as controlling the suction between the pump assembly 1100 and the suction assembly. For example, when the solenoid valve assembly 3200 is open, the pump assembly 1100 can draw air from the suction assembly. When the solenoid valve assembly 3200 is closed, the pump assembly 1100 cannot draw air from the suction assembly. The relative positions of the two are illustrated in FIG25 , where the third direction can be understood as the direction of the z-axis in the three-dimensional coordinate system of FIG25 , the second direction can be understood as the direction of the y-axis in the three-dimensional coordinate system of FIG25 , and the first direction can be understood as the direction of the x-axis in the three-dimensional coordinate system of FIG25 . The pump assembly 1100 is located on the left side of the housing 4600 (i.e., the side closest to the battery holder 4320), while the solenoid valve assembly 3200 is located on the right side of the housing 4600 (i.e., the side away from the battery holder 4320). The right side of the pump assembly 1100 has an air intake structure 1210, which extends to the right. The right side of the solenoid valve assembly 3200 has an air outlet passage 3110, which extends downward. The air intake structure 1210 and the air outlet passage 3110 are connected to each other through a pipeline. This can reduce the distance between the pump assembly 1100 and the solenoid valve assembly 3200, improve space utilization, and thereby reduce the volume of the packaging shell 4600.

[0194] According to the embodiment of the present disclosure, the space utilization rate inside the packaging shell 4600 can be improved, thereby reducing the volume of the packaging shell 4600.

[0195] In some embodiments, as shown in FIG. 25 , the drive assembly 1000 further includes a motor 1120, which is located above the solenoid valve assembly 3200. Specifically, the motor 1120 and the pump assembly 1100 form an "L" shape that is reversed upside down, with the solenoid valve assembly 3200 located in the notch of the "L." This further improves the space utilization of the packaging housing 4600.

[0196] In some embodiments, as shown in FIG25 , there is only one air outlet passage 3110; the solenoid valve assembly 3200 is further provided with a first air inlet passage 3120 and a second air inlet passage 3130, the first air inlet passage 3120 and the second air inlet passage 3130 are respectively connected to the air outlet passage 3110, and the first air inlet passage 3120 and the second air inlet passage 3130 are respectively used to connect to the milk suction assembly; the solenoid valve of the solenoid valve assembly 3200 is used to independently control the opening and closing of the first air inlet passage 3120 and the second air inlet passage 3130 and the air outlet passage 3110.

[0197] The solenoid valve assembly 3200 can include a single solenoid valve having a first air inlet passage 3120, a second air inlet passage 3130, and an air outlet passage 3110. Alternatively, the assembly can include two solenoid valves, one with a first air inlet passage 3120 and the other with a second air inlet passage 3130, with the air outlets of the two valves integrated into a single air outlet passage 3110. The first air inlet passage 3120 and the second air inlet passage 3130 can be understood as extending along the second direction and toward the right side (i.e., away from the battery holder 4320) as shown in FIG. 25 . The first air inlet passage 3120 and the second air inlet passage 3130 are each configured to connect to the breast pump assembly.

[0198] The solenoid valve assembly 3200 can control the opening and closing of the first air intake passage 3120 and the second air intake passage 3130 separately, that is, the first air intake passage 3120 and the second air intake passage 3130 can be opened or closed at the same time, or when the first air intake passage 3120 is opened, the second air intake passage 3130 can be closed (that is, opened alternately) to meet the user's various needs for single-sided milk pumping and double-sided milk pumping.

[0199] According to the embodiments of the present disclosure, the solenoid valve assembly 3200 is provided with two air inlets, which can be connected to two breast pump assemblies, respectively, to improve breast pumping efficiency. When the solenoid valve assembly 3200 includes two solenoid valves, the provision of a single air outlet passage 3110 can reduce the number of pipes connected to the pump assembly 1100, thereby reducing volume and improving space utilization.

[0200] In some embodiments, as shown in Figures 23, 24, and 26, the breast pump host 4000 further includes a light shield 4700, which is arranged on the side of the control panel 4400 facing away from the battery holder 4320 and covers the control panel 4400, and the light shield 4700 avoids the portion of the driving assembly 1000 exposed outside the first hollow structure 4410; a light source 4411 for emitting a light beam is provided at the edge of the control panel 4400; and the light shield 4700 is provided with a light-transmitting structure 4710 for cooperating with the light source 4411.

[0201] The light shield 4700 can be understood as a structure that covers the top of the control panel 4400 (such as above the control panel 4400 in Figure 23). The size of the light shield 4700 can be the same as that of the control panel 4400, or slightly larger than the control panel 4400. When the light shield 4700 covers the control panel 4400, a cavity can be formed between the interior of the light shield 4700 and the control panel 4400. The cavity is used to accommodate the portion of the drive assembly 1000 exposed outside the first hollow structure 4410. Alternatively, in one embodiment, a second hollow structure 4720 is provided on the light shield 4700; the portion of the drive assembly 1000 that passes through the first hollow structure 4410 is embedded in the second hollow structure 4720. The second hollow structure 4720 can be understood as an opening in a portion of the light shield 4700 located on one side of the drive assembly 1000, into which the drive assembly 1000 is inserted after passing through the first hollow structure 4410. Such a configuration can further fix the light shield 4700 and improve the stability of the light shield 4700. At the same time, it can reduce the distance between the light shield 4700 and the control panel 4400, thereby reducing the size of the breast pump host 4000 in the third direction.

[0202] The light source 4411 may be one or more. For example, in one embodiment, the light source 4411 includes a plurality of light-emitting elements spaced apart along the edge of the control panel 4400, and the light-transmitting structure 4710 includes a plurality of light-transmitting strips, and the plurality of light-transmitting strips correspond to the plurality of light-emitting elements. Each light-emitting element may correspond to only one light-transmitting strip, or each light-emitting element may correspond to a plurality of adjacent light-transmitting strips. The on and off states of the plurality of light-emitting elements may be adjusted, for example, turning them on or off at the same time, or turning one part on and the other part off. The specifications of the plurality of light-emitting elements may be the same or different, for example, light-emitting elements that can emit light beams of different colors may be provided. According to an embodiment of the present disclosure, light patterns of different shapes may be formed on the breast pump host 4000 to enhance the user's visual experience and to provide illumination for the user when used at night.

[0203] The light shield 4700 is a structure that blocks the transmission of light beams. The light-transmitting structure 4710 on the light shield 4700 can be understood as a through hole, as shown in FIG26 , so that the light beam emitted by the light source 4411 only passes through the through hole cover to the breast pump host 4000, thereby preventing the light beam from diverging.

[0204] According to an embodiment of the present disclosure, a light-transmitting structure 4710 is provided on the light shield 4700 to limit the divergence of the light beam so that the light beam is only irradiated on a fixed position of the breast pump host 4000, thereby improving the visual experience and providing illumination for the user when used at night.

[0205] In some embodiments, as shown in FIG. 23 and FIG. 24 , a first positioning hole 4611 is provided on the side of the packaging shell 4600 facing the light shield 4700 ; a first positioning column 4730 that cooperates with the first positioning hole 4611 is provided on the side of the light shield 4700 facing the packaging shell 4600 .

[0206] When the light shield 4700 is placed on the packaging shell 4600 , the first positioning post 4730 is inserted into the first positioning hole 4611 to fix the light shield 4700 and prevent the light shield 4700 from shaking in the breast pump main unit 4000 .

[0207] In some embodiments, as shown in Figures 23 and 24, the control panel 4400 is provided with a second positioning hole 4412, the light shield 4700 is provided with a second positioning column 4740 on the side facing the battery holder 4320, and the battery holder 4320 is provided with a positioning portion 4511; the second positioning column 4740 passes through the second positioning hole 4412 and is connected to the positioning portion 4511.

[0208] The positioning portion 4511 may have a hole-like structure. That is, the second positioning post 4740 passes through the second positioning hole 4412 and is inserted into the hole-like structure of the positioning portion 4511, thereby achieving a connection between the light shield 4700, the control panel 4400, and the battery holder 4320. Alternatively, the positioning portion 4511 may have a threaded structure, and the second positioning post 4740 may be a cylindrical body. After passing through the second positioning hole 4412, the second positioning post 4740 abuts against the positioning portion 4511. By using a screw to penetrate the interior of the second positioning post 4740 and mate with the threaded connection of the positioning portion 4511, an indirect connection between the light shield 4700, the control panel 4400, and the battery holder 4320 is achieved, while further securing the control panel 4400.

[0209] According to the embodiments of the present disclosure, the stability of the connection between the light shield 4700, the control panel 4400 and the battery holder 4320 can be improved.

[0210] In some embodiments, as shown in Figures 23 and 24, the breast pump host 4000 further includes a light guide 4800, which includes an annular main body and a light guide protrusion provided on the main body; wherein the main body is located on the side of the light shield 4700 away from the control panel 4400 and surrounds the edge of the light shield 4700, and the light guide protrusion is inserted into the light-transmitting structure 4710.

[0211] The light guide 4800 can be composed of two parts: a ring-shaped member (i.e., the main ring-shaped portion) and a protrusion protruding from the ring-shaped member (i.e., the light-guiding protrusion). Taking Figure 23 as an example, when the light guide 4800 is mated with the light shield 4700, the protrusion inserts from top to bottom into the light-transmitting structure 4710, and the ring-shaped member rests against the top of the light shield 4700. When the light source 4411 is turned on, a light beam is transmitted through the light guide 4800, passing through the protrusion and the ring-shaped member in sequence, and projected onto the breast pump body 4000.

[0212] According to the embodiments of the present disclosure, light beam divergence can be avoided, improving the user experience at night. Furthermore, the light-guiding protrusion of the light guide 4800 is inserted into the light-transmitting structure 4710, which can reduce the space occupied by the light guide 4800 in the third direction, further reducing the size of the breast pump main unit 4000 in the third direction, and thus reducing the volume of the breast pump main unit 4000.

[0213] In some embodiments, as shown in Figures 23 and 24, the breast pump host 4000 also includes a first sub-shell 4110 and a second sub-shell 4120. The first sub-shell 4110 and the second sub-shell 4120 are detachably connected and surround a space to accommodate the control panel 4400, the battery holder 4320, the drive assembly 1000 and the light shield 4700.

[0214] The first sub-shell 4110 and the second sub-shell 4120 can be understood as the upper shell and the lower shell as shown in Figure 23 respectively, and the two can be detachably connected through a snap-fit ​​structure, for example, the upper shell is provided with a hook, and the lower shell is provided with a slot that cooperates with the hook.

[0215] The upper housing may have a support structure protruding from its inner wall for supporting against the light shield 4700. Similarly, the lower housing may have a support structure protruding from its inner wall for supporting against the battery assembly 4300, the battery holder 4320, and the drive assembly 1000, thereby improving its stability within the breast pump main unit 4000.

[0216] According to the embodiments of the present disclosure, the breast pump main unit 4000 can be easily disassembled and assembled, which is beneficial for the maintenance of the breast pump main unit 4000.

[0217] In some embodiments, the upper shell is provided with a light-transmitting area for allowing the light beam to pass through. The light-transmitting area is arranged opposite to the annular main body of the light guide 4800, so that the light beam of the light-emitting element passes through the light guide 4800 and the light-transmitting area in turn and is illuminated on the external environment of the breast pump host 4000, thereby facilitating lighting and operation of the breast pump host 4000 for the user.

[0218] The embodiment of the present disclosure provides a breast pumping device 2000, comprising: a breast pumping assembly 2100 and a driving device 3000 in the above embodiment, wherein the driving device 3000 is used to adjust the air pressure in the breast pumping assembly 2100 to generate negative pressure in the breast pumping assembly 2100 for sucking milk. Alternatively,

[0219] As shown in FIG22 , an embodiment of the present disclosure provides a breast pumping device 2000, comprising: a breast pumping assembly 2100 and the breast pump host 4000 in the above embodiment, wherein the breast pump host 4000 is used to adjust the air pressure in the breast pumping assembly 2100 to generate negative pressure in the breast pumping assembly 2100 for extracting milk.

[0220] The milk suction component 2100 can be understood as a structure that covers the breast. The air pressure in the milk suction component 2100 is adjusted by the breast pump host 4000 to form a negative pressure in the milk suction component 2100, thereby promoting the breast to secrete milk.

[0221] The number of milk suction assemblies 2100 can be selected as needed. For example, one milk suction assembly 2100 can be provided, which can be connected to the first air inlet passage 3120 or the second air inlet passage 3130 of the solenoid valve assembly 3200 in the breast pump main unit 4000 or the driving device 3000. Alternatively, two milk suction assemblies 2100 can be provided, one connecting the first air inlet passage 3120 and the other the second air inlet passage 3130 of the solenoid valve assembly 3200.

[0222] The structure and description of the driving device 3000 can refer to the above embodiment and will not be repeated here.

[0223] The structure and description of the breast pump host 4000 can refer to the above embodiment and will not be repeated here.

[0224] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0225] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0226] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0227] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0228] The disclosure above provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the components and settings of specific examples are described above. Of course, these are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0229] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A drive assembly comprising: a pump assembly, forming an air cavity therein; a cover connected to the pump assembly, the cover comprising an air inlet structure and an air outlet structure; wherein the pump assembly and the cover enclose a gas distribution cavity; The air intake structure is in communication with the air cavity to provide an air intake path for the pump assembly when inhaling air; and The gas outlet structure is in communication with the gas distribution cavity, and the gas distribution cavity is in communication with the gas cavity to provide a channel for the gas flow to be discharged from the pump assembly; wherein the volume of the gas distribution cavity is greater than the volume of the gas outlet structure.

2. The drive assembly according to claim 1, further comprising a gas guiding structure, wherein the gas guiding structure is located within the gas distribution chamber; The gas guiding structure is provided with a first through hole, and the gas cavity is communicated with the gas distribution cavity through the first through hole. 3 . The drive assembly according to claim 2 , wherein the air outlet structure is formed on the wall of the cover and comprises one or more second through holes.

4. The drive assembly according to claim 3, wherein the number of the first through holes is five, wherein the first through hole located in the center has the same spacing as the other first through holes; The number of the second through holes is five, wherein the second through hole located in the center has the same spacing as that of the other second through holes. 5 . The drive assembly according to claim 4 , wherein the axial direction of the first through hole is perpendicular to the axial direction of the second through hole.

6. The drive assembly according to claim 5, wherein the five second through holes are formed on the first side wall of the cover, and the air intake structure is formed on the second side wall of the cover; The gas guiding structure includes a vertical section and an extension section, and the five first through holes are located on a wall of the extension section away from the second through holes.

7. The drive assembly according to claim 3, wherein the number of the first through holes is two, and the two first through holes are arranged in a single row along the first direction; There are a plurality of the second through holes, and the plurality of the second through holes are arranged in pairs on the side wall of the cover; in, The straight line on which the axis of the second through hole lies and the straight line on which the first direction lies are not aligned with each other; or The straight line where the axis of the second through hole lies intersects the straight line where the first direction lies.

8. The drive assembly according to claim 7, wherein a plurality of the second through holes are arranged in pairs on the four side walls of the cover, the air intake structure is formed on one of the side walls of the cover, the gas guide structure includes a vertical section, and the first through holes are located on the vertical section.

9. The drive assembly according to claim 3, wherein the number of the first through holes is five, wherein the first through hole located in the center has the same spacing as the other first through holes; There are a plurality of the second through holes, and the plurality of the second through holes are arranged in pairs on the side wall of the cover. 10 . The drive assembly according to claim 9 , wherein the straight line on which the axis of the second through hole lies and the straight line on which the axis of the first through hole lies are skew lines.

11. The drive assembly according to claim 9, wherein the number of the second through holes is four pairs, and the second through holes are formed on the four side walls of the cover in a one-to-one correspondence, wherein two pairs of the second through holes arranged opposite to each other are symmetrical.

12. The drive assembly according to claim 11, wherein four pairs of the second through holes are arranged in pairs on the four side walls of the cover, the air intake structure is formed on one of the side walls of the cover, the gas guide structure includes a vertical section and an extension section, and five of the first through holes are located on the extension section.

13. A breast pumping device comprising: A pump assembly, which fits over the breast to extract milk; and A controller comprising a drive assembly according to any one of claims 1 to 12, wherein an air intake structure of the drive assembly is connected to the milk suction assembly to generate negative pressure in the milk suction assembly for sucking milk.

14. A driving device, characterized in that: include: A controller comprising a drive assembly, an air intake structure and an air outlet structure, wherein the air intake structure is protruding from the drive assembly, and the air outlet structure is recessed in the drive assembly, and the drive assembly is used to provide power so that air flows from the air intake structure into the interior of the drive assembly and is discharged from the drive assembly by the air outlet structure. 15 . The driving device according to claim 14 , wherein an area of ​​the second cross section of the air outlet structure is 5 to 10 times an area of ​​the first cross section of the air inlet structure.

16. The driving device according to claim 14, wherein the driving assembly comprises a cover, a pump assembly, and a valve plate disposed between the cover and the pump assembly; the valve plate has an air cavity therein; The air inlet structure is convexly arranged on the cover, and the air outlet structure is concavely arranged on the cover; The airflow enters the air cavity from the air inlet structure, and the airflow enters the air outlet structure from the air cavity; The pump assembly is used to change the pressure of the air cavity. 17 . The driving device according to claim 16 , wherein the air inlet structure is protrudingly provided on the second side wall of the cover, and the air outlet structure is recessed from the first side wall of the cover into the cover.

18. The driving device according to claim 16, wherein two opposite end surfaces of the valve plate are respectively provided with a first one-way valve and a second one-way valve; The first one-way valve is arranged between the air cavity and the air inlet structure to allow the air flow to enter the air cavity from the air inlet structure. The second one-way valve is arranged between the air cavity and the air outlet structure to allow the air flow to enter the air outlet structure from the air cavity. The driving device according to claim 14 , wherein sound-absorbing cotton is provided in the air outlet structure.

20. The driving device according to any one of claims 14 to 19, further comprising: A solenoid valve assembly, the solenoid valve assembly comprising a connecting member, a first solenoid valve and a second solenoid valve, wherein the first solenoid valve and the second solenoid valve are connected to the connecting member; The connecting member includes an air outlet passage, a first air inlet passage, and a second air inlet passage, wherein the air outlet passage is in communication with the air inlet structure, and at least one of the first air inlet passage and the second air inlet passage is in communication with a milking assembly; The first solenoid valve is used to control the connection and disconnection between the air outlet passage and the first air inlet passage, and the second solenoid valve is used to control the connection and disconnection between the air outlet passage and the second air inlet passage. 21 . The driving device according to claim 20 , wherein the first air intake passage and the second air intake passage are symmetrically arranged on both sides of the air outlet passage.

22. The driving device according to claim 20, wherein the air outlet passage, the first air inlet passage, and the second air inlet passage are located on a side of the solenoid valve assembly facing away from the air inlet structure provided on the driving assembly.

23. The driving device according to claim 20, wherein the connecting member comprises a first air inlet connector, a second air inlet connector, an air outlet connector, and a member body, wherein the first air inlet connector, the second air inlet connector, and the air outlet connector are all connected to the member body; The first air inlet joint has the first air inlet passage inside, the second air inlet joint has the second air inlet passage inside, and the air outlet joint has the air outlet passage inside; The component body has a central passage extending along a third direction, and the air outlet passage, the first air intake passage and the second air intake passage are respectively connected to the central passage; the third direction is the arrangement direction of the first solenoid valve and the second solenoid valve.

24. The driving device according to claim 23, wherein the first solenoid valve is connected between the first intake passage and the central passage to control the on-off between the first intake passage and the central passage, and the second solenoid valve is connected between the second intake passage and the central passage to control the on-off between the second intake passage and the central passage.

25. The driving device according to claim 24, wherein the first solenoid valve and the second solenoid valve are connected to a first side of the component body, and the central passage, the first air intake passage and the second air intake passage are located on a second side of the component body opposite to the first side.

26. The driving device according to claim 23, wherein the air outlet connector extends along a first direction perpendicular to the third direction, the first air inlet connector and the second air inlet connector extend along a second direction perpendicular to the third direction respectively, and the second direction is arranged perpendicular to the first direction.

27. A breast pump host, comprising: A housing; a first communicating hole and a second communicating hole are provided at intervals on one end surface of the housing, and the interior of the housing is connected to the exterior of the housing through the first communicating hole and the second communicating hole; The driving device according to any one of claims 14 to 26, wherein the driving device is disposed in the housing and is in communication with the first communicating hole and the second communicating hole.

28. The breast pump main unit according to claim 27, wherein a packaging shell is provided inside the housing, and the interior of the packaging shell is used to encapsulate the driving device; A third communicating hole and a fourth communicating hole are provided at intervals on one end surface of the packaging shell. The third communicating hole is communicated with the first communicating hole, and the fourth communicating hole is communicated with the second communicating hole.

29. The breast pump according to claim 28, wherein a sound-absorbing cotton is provided between the outer peripheral surface of the driving device and the inner side wall of the packaging shell; and / or, Sound-absorbing cotton is arranged between the outer peripheral surface of the packaging shell and the inner side wall of the shell.

30. The breast pump main unit according to claim 28, wherein the housing has a snap-fitting groove, and the packaging housing has a snap-fitting protrusion for snapping into the snap-fitting groove; The packaging shell is further provided with a first positioning hole, and the shell is provided with a first positioning column, which is inserted into the first positioning hole.

31. The breast pump main unit according to claim 27, wherein the shell comprises a first sub-shell and a second sub-shell, a first clamping portion is provided on an edge of the first sub-shell, a second clamping portion is provided on an edge of the second sub-shell, the first clamping portion is clamped to the second clamping portion, and the driving device is provided between the first sub-shell and the second sub-shell.

32. The breast pump host according to claim 27, further comprising: A control panel and a battery assembly are located in the housing. The control panel is connected to the battery assembly and the driving device respectively. The battery assembly is used to provide current, and the control panel is used to send electrical signals to the driving device.

33. A breast pumping device comprising: breast pump components; The drive device according to any one of claims 14 to 26, wherein the drive device is used to adjust the air pressure in the milk pump assembly to generate a negative pressure in the milk pump assembly for sucking milk; or The breast pump main unit according to any one of claims 27 to 32, wherein the breast pump main unit is used to adjust the air pressure in the milk suction component to generate negative pressure in the milk suction component for sucking milk.

34. A breast pump host, comprising: control Panel; a battery holder, stacked with the control panel along a third direction, the battery holder being connected to the control panel, the battery holder having a receiving portion for receiving a battery assembly on a side facing away from the control panel; a drive assembly disposed side by side with the battery holder along the second direction, the drive assembly being in communication with the control panel to provide suction for extracting milk under the control of the control panel; Wherein, the third direction is perpendicular to the second direction.

35. The breast pump main unit according to claim 34, wherein a third engaging portion for engaging the battery assembly is provided on a side of the battery bracket facing away from the control panel.

36. The breast pump main unit according to claim 34, wherein the battery holder is provided with heat dissipation holes, so that the heat generated by the battery assembly can be dissipated from the inside of the accommodating portion to the outside of the accommodating portion through the heat dissipation holes.

37. The breast pump according to any one of claims 34 to 36, wherein the control panel is provided with a first hollow structure, and the driving assembly at least partially passes through the first hollow structure and is exposed; wherein, The first hollow structure is located outside the area where the control panel and the battery holder are stacked.

38. The breast pump main unit according to claim 37, wherein the driving assembly comprises a packaging shell, and the packaging shell is a stepped structure; wherein The packaging shell partially passes through the first hollow structure, and the step surface of the packaging shell abuts against the control panel.

39. The breast pump host according to claim 38, wherein the driving assembly further comprises a pump assembly and a solenoid valve assembly disposed in the packaging shell; The pump assembly is located on a side of the packaging shell close to the battery holder, and the solenoid valve assembly is located on a side of the packaging shell away from the battery holder; The pump assembly is provided with an air intake structure, the air intake structure is located on a side of the pump assembly away from the battery holder; and the air intake structure extends along the second direction; The solenoid valve assembly is provided with an air outlet passage, the air outlet passage is located at an end of the solenoid valve assembly away from the battery holder, and the air outlet passage extends along a first direction; The air intake structure is connected to the air outlet passage through a pipe, and the pipe extends along the second direction, wherein the first direction is perpendicular to the third direction and the second direction.

40. The breast pump according to claim 39, wherein the number of the air outlet passage is one; The solenoid valve assembly is further provided with a first air inlet passage and a second air inlet passage, the first air inlet passage and the second air inlet passage are respectively connected to the air outlet passage, and the first air inlet passage and the second air inlet passage are respectively used to communicate with the milking assembly; The solenoid valve of the solenoid valve assembly is used to independently control the opening and closing of the first air intake passage, the second air intake passage and the air outlet passage.

41. The breast pump host according to claim 38, further comprising: a light shield, the light shield being arranged on a side of the control panel facing away from the battery holder and covering the control panel, and the light shield avoiding a portion of the driving component exposed outside the first hollow structure; A light source for emitting a light beam is provided on the edge of the control panel; The light shield is provided with a light-transmitting structure for cooperating with the light source.

42. The breast pump main unit according to claim 41, wherein the light shield is provided with a second hollow structure; The driving component passes through a portion of the first hollow structure and is embedded in the second hollow structure.

43. The breast pump main unit according to claim 41, wherein a first positioning hole is provided on a side of the packaging shell facing the light shield; A first positioning column matched with the first positioning hole is provided on a side of the light shield facing the packaging shell.

44. The breast pump according to claim 41, wherein the control panel is provided with a second positioning hole, a second positioning column is provided on a side of the light shield facing the battery holder, and a positioning portion is provided on the battery holder; The second positioning post passes through the second positioning hole and is connected to the positioning portion.

45. The breast pump according to claim 41, wherein the light source comprises a plurality of light-emitting elements spaced apart along an edge of the control panel, and the light-transmitting structure comprises a plurality of light-transmitting strips corresponding to the plurality of light-emitting elements.

46. ​​The breast pump host according to claim 41, further comprising: A light guide member includes an annular main body and a light guide protrusion arranged on the main body; wherein the main body is located on the side of the light shield away from the control panel and surrounds the edge of the light shield, and the light guide protrusion is inserted into the light-transmitting structure.

47. The breast pump host according to claim 41, further comprising: The first sub-shell and the second sub-shell are detachably connected and surround a space for accommodating the control panel, the battery bracket, the drive assembly and the light shield.

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