Main machine for breast pump and breast pump

Abstract

The utility model discloses a main machine used for a breast pump and the breast pump, the main machine used for the breast pump comprises a shell (10) with a mounting cavity (10a), and the shell (10) is bent to form a neck hanging area (10b); a control panel (8), a battery (6) electrically connected with the input end of the control panel (8) and an air pump (7) electrically connected with the output end of the control panel (8) and used for generating negative pressure are installed in the installation cavity (10a), and the shell (10) is provided with an air vent (10d) used for ventilation of the output end of the air pump (7) and the outside. Through the arrangement of the neck hanging area, the user can wind the shell on the neck, so that the two hands of the user can be liberated, the user can carry the host to move, and the user can use the host conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of breast pumps, in particular to a main body for a breast pump and a breast pump. Background Art

[0002] A breast pump is a commonly used mother and baby product that generates negative pressure through an air pump to suck out breast milk. The breast pump includes a main body and a breast milk collection device connected to the main body. The main body includes an air pump, etc., and the breast milk collection device is used to collect breast milk.

[0003] Currently, there are mainly two structures for breast pumps.

[0004] First, the main body and the breast milk collection device are two independent parts. At this time, the user needs to place the main body on an object such as a table, or hang the main body on the waist, or hold the main body by hand. These breast pumps are still not very convenient to use and have a certain impact on the normal activities of the user.

[0005] Second, the main body and the breast milk collection device are assembled into one piece, which is a wearable breast pump and is relatively convenient to use. For example, a Chinese patent with the application number CN201890000923.9 (publication number CN213964594U) discloses a "breast pump system". The breast pump system includes a housing and a piezoelectric air pump. At least part of the housing is shaped to fit inside a bra; the piezoelectric air pump is fitted inside the housing and forms part of a closed-loop system. The piezoelectric air pump drives a separate deformable diaphragm to generate negative air pressure, and the diaphragm is detachably mounted on a breast milk collection shield. Summary of the Utility Model

[0006] The first technical problem to be solved by the utility model is to provide a new main body for a breast pump for the current situation of the prior art, which is convenient for users to use.

[0007] The second technical problem to be solved by the utility model is to provide a breast pump.

[0008] The technical solution adopted by the utility model to solve the above first technical problem is: a main body for a breast pump, characterized in that: it includes a housing having an installation cavity, and the housing is bent to form an open neck-hanging area; a control board, a battery electrically connected to the input end of the control board, and an air pump electrically connected to the output end of the control board and used to generate negative pressure are installed in the installation cavity, and the housing has a ventilation port for the output end of the air pump to communicate with the outside.

[0009] The structure of the housing can be various. Preferably, for the convenience of production and assembly, the housing includes

[0010] an inner housing, which is bent, and the inner side of the inner housing encloses the neck-hanging area;

[0011] The outer shell is curved; the outer shell is connected to the inner shell along the inner and outer directions, and forms the installation cavity with the inner shell.

[0012] The structure of the inner shell can be various. Preferably, in order to facilitate the installation of the control board, the battery and the air pump, the inner shell has a receiving cavity opening outwards.

[0013] The control board, the battery and the air pump are arranged in the accommodating cavity of the inner shell at intervals.

[0014] In order to facilitate the user to wear or take off the host, the inner shell includes an arc segment, a left extension segment located on the left side of the arc segment, and a right extension segment located on the right side of the arc segment along its length direction;

[0015] The arc-shaped section is at least partially made of a flexible material, so that the left extension section and the right extension section can move relatively away or relatively close together after being subjected to force, thereby changing the size of the opening.

[0016] In this way, when the user needs to wear the host around the neck or take off the host, the shell is opened and the arc segment is deformed, so that the opening of the neck hanging area becomes larger, making it easier for the user to wear or take off the host; and the arc segment is made of flexible material, which is soft and more comfortable on the back of the user's neck.

[0017] In order to take into account support, softness, and convenient rotation, the inner shell also includes connecting sections respectively connected to the left extension section and the right extension section;

[0018] The connecting section is located in the installation cavity, and the connecting section includes at least two rotatably connected connecting blocks, and two adjacent connecting blocks are subjected to force to move relatively away from or relatively close to each other, so that the left extension section and the right extension section can move relatively away from or relatively close to each other, thereby changing the size of the opening;

[0019] The hardness of the connecting block is greater than the hardness of the arc segment.

[0020] In this way, by setting at least two rotatably connected connecting blocks, the hardness of the connecting blocks is greater than the hardness of the arc segment, and it has the following effects: first, the connecting blocks have a certain supporting effect on the arc segment, so that the arc segment is more stylish and does not droop on the back of the user's neck due to excessive softness; second, the shell will not be overly hard and not conducive to the comfort of the back of the user's neck due to the setting of the connecting blocks; third, the connecting blocks are rotatably connected, and the arc segment is at least partially made of flexible material, which makes it easy for the user to pry open the shell and enlarge the opening of the shell in the neck hanging area, thereby making it easier for the user to wear or remove the host; in this way, through the cooperation of the connecting blocks and the arc segment, the requirements of support, flexibility, and convenient rotation can be taken into account at the same time, which is convenient for the user to be comfortable and easy to use.

[0021] For ease of assembly, the inner shell further includes a connecting section located in the installation cavity and connected to the left extension section and the right extension section respectively;

[0022] The left extension section, the right extension section, and the connecting section are an integral part;

[0023] The arc section is connected to at least one of the left extension section, the right extension section, and the connecting section, or the arc section is connected to the outer shell.

[0024] In this way, it is beneficial to reduce the number of parts of the shell and facilitate assembly.

[0025] The structure of the connecting section can be various. Preferably, in order to facilitate the user to wear or remove the main body, the connecting section further includes

[0026] an upper arc bar;

[0027] a lower arc bar;

[0028] Each of the connecting blocks is connected to the upper arc bar and the lower arc bar, and all the connecting blocks are spaced apart along the length direction of the shell, and a through hole penetrating in the inner-outer direction is formed between two adjacent connecting blocks;

[0029] At least a part of the upper arc bar and the lower arc bar is made of a flexible material, so that two adjacent connecting blocks are rotatably connected.

[0030] In this way, at least a part of the upper arc bar and the lower arc bar is made of a flexible material to realize the rotational connection of two adjacent connecting blocks, which facilitates the bending of the connecting section, and thus facilitates the user to wear or remove the main body.

[0031] Preferably, a heating sheet or / and a cooling sheet are arranged between the connecting section and the arc section. The heating sheet promotes milk secretion through hot compress, which is convenient for relieving the user's fatigue and is used to improve the user's comfort in winter. The cooling sheet is used for cooling in summer to improve the user's comfort.

[0032] To improve the user's comfort, the shell has left and right sides along its own length direction;

[0033] The battery and the air pump are respectively located on the left and right sides;

[0034] Projecting the main body in the up-down direction, the highest point of the inner wall of the shell that defines the hanging neck area is denoted as point A;

[0035] The center of gravity position of the battery is denoted as point B, and the vertical distance from this point B to point A is denoted as H1, and the range of H is: 60 - 150 mm;

[0036] The center of gravity position of the air pump is denoted as point C, and the vertical distance from this point C to point A is denoted as H2, and the range of H is: 60 - 150 mm.

[0037] In this way, by arranging the motor and the air pump on the left and right sides of the shell respectively, the mass distribution on the left sides is more reasonable, and when the host is hung on the user's neck, the force on the neck is more appropriate; and the center of gravity of the host is higher. After the user wears the host, part of the force is dispersed to the left and right sides of the neck, which will not cause the downward force on the top of the back of the user's neck to be too concentrated, the force will not be too large, and there will be no obvious downward pulling feeling. In this way, the back of the user's neck is more comfortable, thereby improving the user experience.

[0038] The technical solution adopted by the utility model to solve the second technical problem is: a breast pump, characterized in that it includes a host for the breast pump as described above, and a milk collection device connected to the air pump output end of the host through a vent.

[0039] Compared with the prior art, the utility model has the advantages that: by providing the neck hanging area, the user can wrap the shell around the neck, which can free the user's hands and the user can carry the host with him / her, thus making it convenient for the user to use;

[0040] In the improved solution, by providing an arc segment at least partially made of a flexible material, firstly, it is convenient for the user to pry open the shell, so that the opening of the shell neck hanging area becomes larger, thereby facilitating the user to wear or take off the host, and secondly, the flexible material is in soft contact with the user's neck, so that the user's neck is more comfortable;

[0041] By providing at least two rotatably connected connection blocks, the hardness of the connection blocks is greater than the hardness of the arc segment. In this way, through the cooperation of the connection blocks and the arc segment, the requirements of support, softness, and convenient rotation can be taken into account at the same time, which is convenient for users to wear and use. Specifically, first, the connection blocks have a certain supporting effect on the arc segment, so that the arc segment is more stylish and does not droop behind the user's neck due to excessive softness; second, the shell is not made too hard due to the provision of the connection blocks, which is conducive to the comfort of the back of the user's neck; third, the connection blocks are rotatably connected, and the arc segment is at least partially made of flexible material, which makes it convenient for users to pry open the shell, so that the opening of the shell hanging area is enlarged, thereby making it convenient for users to wear or take off the host;

[0042] The left extension section, the right extension section and the connecting section are an integrated part, so that the shell is divided into three parts, namely the integrated part, the arc section and the outer shell, with a small number of parts and convenient assembly of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of a breast pump according to an embodiment of the utility model;

[0044] Figure 2 A schematic diagram of a host computer according to an embodiment of the present utility model;

[0045] Figure 3 for Figure 2Schematic diagram from another angle;

[0046] Figure 4 Cross-sectional view of the main body of the embodiment of the present utility model (the trachea connected to the air pump is omitted);

[0047] Figure 5 Exploded view of the main body of the embodiment of the present utility model;

[0048] Figure 6 Stereoscopic schematic diagram of a part of the inner shell in the embodiment of the present utility model;

[0049] Figure 7 Stereoscopic schematic diagram of the arc section in the embodiment of the present utility model;

[0050] Figure 8 Another exploded view of the main body of the embodiment of the present utility model;

[0051] Figure 9 Schematic diagram from another angle of the main body of the embodiment of the present utility model;

[0052] Figure 10 Schematic diagram of the pipeline connection relationship between the air pump and the trachea in the main body of the embodiment of the present utility model;

[0053] Figure 11 Cross-sectional view of another position of the main body of the embodiment of the present utility model;

[0054] Figure 12 For Figure 11 An exploded view;

[0055] Figure 13 For Figure 11 Another exploded view;

[0056] Figure 14 Cross-sectional view of another position of the main body of the embodiment of the present utility model;

[0057] Figure 15 For Figure 14 An exploded view;

[0058] Figure 16 For Figure 14 Another exploded view;

[0059] Figure 17 For Figure 14 Another exploded view;

[0060] Figure 18 Schematic diagram of the milk collection device in the embodiment of the present utility model;

[0061] Figure 19 Installation schematic diagram of the milk collection device and the trachea in the embodiment of the present utility model;

[0062] Figure 20 This is an exploded view of the milk collection device in the embodiment of the present utility model;

[0063] Figure 21 is Figure 19 a sectional view of;

[0064] Figure 22 is Figure 18 a schematic view after removing the shield. Specific embodiments

[0065] The present utility model will be further described in detail below in conjunction with the embodiments of the accompanying drawings.

[0066] Refer to Figures 2 to 17 , which is a preferred embodiment of the main unit 100 of the present utility model.

[0067] It should be noted that in this application document, the orientation of the main unit 100 is defined based on the state when the main unit 100 is worn around the user's neck, specifically as follows:

[0068] The length direction of the housing 10 refers to the direction in which it extends around the neck;

[0069] The side of the housing 10 facing the neck is its inner side, and the side facing away from the neck is its outer side;

[0070] The side of the housing 10 facing the head is its upper side, and the side facing away from the head is its lower side.

[0071] The main unit 100 for a breast pump includes a housing 10 having an installation cavity 10a, in which a control board 8, a battery 6 electrically connected to the input end of the control board 8, and an air pump 7 electrically connected to the output end of the control board 8 and used to generate negative pressure are installed. The housing 10 has a ventilation port 10d for the output end of the air pump 7 to communicate with the outside, and a detachable dust cover is provided at the ventilation port 10d.

[0072] Among them, the housing 10 is bent to form a neck-hanging area 10b with an opening 10c, that is, the housing 10 is generally in a C shape. The longitudinal section of the housing 10 is rectangular, and the longitudinal section of the housing 10 can also be circular or other shapes. The housing 10 includes an inner housing 4 and an outer housing 5.

[0073] Refer to Figures 4 to 8 , the inner housing 4 is bent and generally in a C shape. The inner side of the inner housing 4 encloses the neck-hanging area 10b, and the inner housing 4 has a receiving cavity 4a with an outward opening 4b; the control board 8, the battery 6, and the air pump 7 are arranged at intervals in the receiving cavity 4a of the inner housing 4. The outer housing 5 is bent and generally in a C shape; the outer housing 5 is connected to the inner housing 4 in an inner-outer direction and encloses the installation cavity 10a with the inner housing 4.

[0074] The inner shell 4 includes an arc segment 41, a left extension segment 42 on the left side of the arc segment 41, a right extension segment 43 on the right side of the arc segment 41, and connection segments 44 respectively connected to the left extension segment 42 and the right extension segment 43 along its own length direction. At least a part of the arc segment 41 is made of a flexible material, so that the left extension segment 42 and the right extension segment 43 can move relatively away from or close to each other under force, thereby changing the size of the opening 10e. Preferably, the entire arc segment 41 is made of a flexible material, such as silicone, rubber, etc. Refer to Figure 7 , the arc segment 41 includes a horizontally extending upper side wall 41a, a horizontally extending lower side wall 41b, and a vertically extending wall 41c connecting the upper side wall 41a and the lower side wall 41b, so that the longitudinal section of the arc segment 41 is in a U shape opening towards the outer shell 5. The longitudinal section shape of the arc segment 41 can also be adjusted as needed. For example, it can also be in a C shape or other shapes opening towards the outer shell 5. The connection segment 44 is located in the installation cavity 10a and adjacent to the inner side wall 41c of the arc segment 41, and the connection segment 44 includes an upper arc bar 441, a lower arc bar 442, and connection blocks 443; the number of connection blocks 443 is adjusted as needed. At least two connection blocks 44 rotate and are connected, and adjacent two connection blocks 44 can move relatively away from or close to each other under force, correspondingly enabling the left extension segment 42 and the right extension segment 43 to move relatively away from or close to each other, thereby changing the size of the opening 10e; each connection block 443 is connected to the upper arc bar 441 and the lower arc bar 442, and all connection blocks 443 are spaced along the length direction of the housing 10, and a through hole 444 penetrating in the inner and outer directions is formed between adjacent two connection blocks 443; at least a part of the upper arc bar 441 and the lower arc bar 442 is made of a flexible material. Preferably, the upper arc bar 441 and the lower arc bar 442 are both made of flexible materials such as silicone or rubber, so that adjacent two connection blocks 443 rotate and are connected. The hardness of the connection block 443 is greater than that of the arc segment 41. For example, the connection block 443 is made of plastic, aluminum, etc., so that the hardness is greater than the silicone hardness of the arc segment 41. The connection segment 443 is located in the installation cavity 10a and is respectively connected to the left extension segment 42 and the right extension segment 43; preferably, the left extension segment 42, the right extension segment 43, and the connection segment 44 are an integral part. The arc segment 41 is connected to at least one of the left extension segment 42, the right extension segment 43, and the connection segment 44, or the arc segment 41 is connected to the outer shell 5. In this embodiment, refer to Figure 6 , Figure 7 , the arc segment 41 and the connection segment 44 are connected by inserting a connection column 41d into a limit hole 443a. Alternatively, the arc segment 41 can also be connected to other parts of the housing 10.

[0075] For the convenience of installation, the upper wall of the arc section 41 has an upwardly concave upper positioning groove 411, and the upper arc strip 441 has an upwardly extending upper positioning portion 441a inserted into the upper positioning groove 411; the lower wall of the arc section 41 has a downwardly concave lower positioning groove 412, and the lower arc strip 442 has a downwardly extending lower positioning portion 442a inserted into the lower positioning groove 412. The lower part of the upper arc strip 441 has an upwardly extending upper clamping block 441b, and the housing 5 has an upper hook 51, which includes an upper extension section 511 extending in the front-rear direction and located below the upper arc strip 441, and an upper hook portion 512 connected to the upper extension section 511 and clamped with the upper clamping block 441b; the upper part of the lower arc strip 442 has a downwardly extending lower clamping block 442b, and the housing 5 has a lower hook 52, which includes a lower extension section 521 extending in the front-rear direction and located above the lower arc strip 442, and a lower hook portion 522 connected to the lower extension section 521 and clamped with the lower clamping block 442b.

[0076] A heating sheet 9 or / and a refrigerating sheet are arranged between the connecting section 44 and the inner side wall 41c of the arc section 41. The heating sheet 9 and the refrigerating sheet can adopt different sheet bodies; they can also adopt the same sheet body, but different temperatures of the sheet body are adjusted to achieve heating or refrigeration.

[0077] Viewed from Figure 2 the housing 10 has left and right sides along its own length direction; see Figure 4 , the battery 6 and the air pump 7 are respectively located on the left and right sides; when the main body 100 is projected in the up-down direction, the highest point of the inner wall of the housing 10 for defining the hanging neck area 10b is denoted as point A; the center of gravity position of the battery 6 is denoted as point B, and the vertical distance from this point B to point A is denoted as H1, and the range of H1 is: 60 - 150 mm; the center of gravity position of the air pump 7 is denoted as point C, and the vertical distance from this point C to point A is denoted as H2, and the range of H2 is: 60 - 150 mm. The battery 6 preferably adopts a rechargeable battery 6 and is charged through the USB interface 100b. See Figure 10The installation cavity 10a of the housing 10 is also provided with a first ventilation pipe 102, a second ventilation pipe 103, a first electromagnetic valve 104, and a second electromagnetic valve 105; the first ventilation pipe 102 is respectively connected to the air pump 7 and the outside world; the second ventilation pipe 103 is respectively connected to the air pump 7 and the outside world; the first electromagnetic valve 104 is arranged on the first ventilation pipe 102, electrically connected to the second output end of the control board 8, and is used to control the on-off of the first ventilation pipe 102; the second electromagnetic valve 105 is arranged on the second ventilation pipe 103, electrically connected to the third output end of the control board 8, and is used to control the on-off of the second ventilation pipe 103, that is, one air pump 7 acts on two electromagnetic valves at the same time, which is conducive to improving the working efficiency of the breast pump and reducing the number of parts such as air pipe joints used for ventilation. A pressure sensor is also arranged on the control board 8, which is used to sense the air pressure output by the air pump 7. A sealing box is arranged outside the air pump 7, which is conducive to reducing noise.

[0078] The host 100 further includes a key switch 100a ( Figure 1 ), voice playback port, the button switch 100a has different gears, and is used for turning the machine on and off, voice broadcasting, turning on the heating plate 9, adjusting the suction force of the air pump 7, etc. A voice playback module electrically connected to the control board 8 is also provided in the shell 10, and voice is played through the voice playback port. For example, when the machine is turned on, the voice of "power on" is played.

[0079] See also Figure 2 , Figure 3 , looking at the shell 10 from another angle, the shell 10 includes an arc-shaped area 1 located in the center, a left area 2 connected to the left side of the arc-shaped area 1, and a right area 3 connected to the right side of the arc-shaped area 1 along its length direction; the arc-shaped area 1 is at least partially made of flexible material and / or bendable structure, so that the left area 2 and the right area 3 can be relatively far away or relatively close to each other, thereby changing the size of the opening 10c. The arc-shaped area 1 can be made of the same material (for example, silicone or rubber), or different materials, as long as the arc-shaped area 1 can be bent so that the user can wear it around the neck or take it off after breaking it apart. The bendable structure, for example, adopts a rotating connection. Preferably, in this embodiment, the arc area 1 adopts a combination of bendable material and bendable structure to enable the left area 2 and the right area 3 to be relatively far away or relatively close. Specifically, the arc area 1 includes a connected arc outer shell 11 and an arc inner shell 12. The hardness of the arc outer shell 11 is greater than the hardness of the arc inner shell 12. The arc inner shell 12 includes the above-mentioned arc segment 41 and the above-mentioned connecting segment 44. The above-mentioned arc segment 41 adopts a flexible material, and the above-mentioned connecting segment 44 partially adopts a flexible material (the above-mentioned upper arc strip 441 and the above-mentioned lower arc strip 442 adopt a flexible material) and a local bendable structure (rotational connection between adjacent connecting blocks 443).

[0080] See alsoFigure 4 A limiting column 10c extending in the inward and outward directions is provided at a position adjacent to the arc-shaped area 1 in the left area 2 and the right area 3, and the two ends of the limiting column 10c are connected to the inner walls of the corresponding areas respectively, so that the left area 2 and the right area 3 are not easily deformed when the shell 1 is pried open. The limiting column 10c can also be provided only in the left area 2, or only in the right area 3. The limiting column 10c is a one-piece component, or a split component, for example, the limiting column 10c is divided into two sections, and the two sections are fixed after being plugged in. By providing the limiting column 10c, when the user pries open the shell 1, the deformation of the shell 1 is mainly in the arc-shaped area 1, and the left area 2 and the right area 3 are relatively not easy to deform, which is beneficial to extending the service life of the shell 1.

[0081] See also Figure 1 , is a preferred embodiment of the breast pump of the utility model, the breast pump comprises the above-mentioned host 100 for breast pump, and a milk collecting device 200 connected to the output end of the air pump 7 of the host 100 through the vent 10d. The user can choose to suck milk from one side (for example, only the left side, or only the right side) or both sides according to the needs. Figure 1 The diagram shows double-sided milk extraction, and two milk collection devices 200 are installed accordingly.

[0082] See also Figures 18 to 22 , which is a preferred embodiment of the milk collection device of the utility model. The milk collection device 200 includes a milk container 201, a cover 202, a diaphragm 203, a shield 204, a three-way pipe 205, and a diaphragm bracket 206. Specifically, the milk container 201 has a cavity 201c, a mounting port 201a respectively connected to the cavity 201c, and a milk pouring port 201b. The cover 202 is arranged at the mounting port 201a, and is used to communicate with the output end of the air pump 7 of the host 100 through the vent 10d and the air pipe 300. The cover 202 is detachably sealed to the wall of the mounting opening 201a of the milk container 201, so that the cover 202 and the milk container 201 can be disassembled to facilitate cleaning and disinfection. Specifically, the cover 202 is threadedly connected to the wall of the mounting opening 201a of the milk container 201, and a sealing ring 400 ( Figure 20 , Figure 21)。The diaphragm 203 is disposed within the cavity 201c of the milk container 201 and, together with the lid 202, encloses a cavity 200a with adjustable volume, and the volume of this cavity 200a is regulated by the air pump 7. The shield 204 is disposed at the milk outlet 201b and is used to seal the milk outlet 201b, and has a through nipple passage 204a. The three-way pipe 205 is disposed within the cavity 201c of the milk container 201, specifically connected to the milk container 201 through the limiting convex portion 205a. The upper pipe orifice 205a of this three-way pipe 205 is connected to the outer wall of the diaphragm 203, its middle pipe orifice 205b is connected to the nipple passage 204a of the shield 204, and its lower pipe orifice 205c is connected to the cavity 201c of the milk container 201. The diaphragm support 206 is disposed within the cavity 201c of the milk container 201 and is located between the diaphragm 203 and the three-way pipe 205. The diaphragm support 206 is connected to the upper pipe orifice 205a of the three-way pipe 205 and is used to support the diaphragm 203 upward.

[0083] The working principle and usage process are as follows.

[0084] During assembly, the left extension section 42, the right extension section 43, and the connection section 44 are an integral part. First, connect this integral part to the arc section 41, thus completing the assembly of the inner shell 4, and then snap the inner shell 4 onto the outer shell 5. The housing 10 involves a total of three parts: an integral part, the arc section 41, and the outer shell 5. The number of parts is small and the assembly is convenient; in addition, the space inside the housing 10 is relatively large, facilitating the accommodation of the battery 6, the control board 8, and the air pump 7.

[0085] After the user slightly pries open the main unit 100, the main unit 100 is put on outside the neck. Place the milk collection device 200 inside the bra, fit the shield 204 to the breast, and place the nipple into the nipple passage 204a. In this way, the milk collection device 200 can be worn independently without the need to hold it by hand, liberating the user's hands and being convenient to use. Since the main unit 100 adopts a hanging neck method, the volume of the milk collection device 200 can be made relatively large, thus facilitating the collection of milk. Connect the milk collection device 200 to the main unit 100 through the air pipe 300, specifically, both ends of the air pipe 300 are detachably connected by means of plugging.

[0086] Then, the user presses the button switch 100a, the air pump 7 operates to pump air, the volume of the cavity 200a decreases, the diaphragm 203 deforms, causing a negative pressure in the three-way pipe 205. This negative pressure acts on the user's breast, thereby sucking out the milk. The milk flows into the milk container 201 through the lower pipe orifice 205c of the three-way pipe 205 under the action of gravity. The user can also select the heating function. At this time, the heating element 9 operates to heat the back of the user's neck, playing a role in promoting milk secretion.

[0087] The air pump 7 operates continuously, causing the diaphragm 203 to reciprocate cyclically between deformation and restoration of its shape, thereby continuously sucking milk into the milk container 201.

[0088] After use, remove the lid 202, the shield 204, the three-way pipe 205, etc. of the milk collection device 200 and clean and disinfect them, which is more hygienic and safe.

Claims

1. A main unit for a breast pump, characterized in that: It includes a housing (10) having an installation cavity (10a), and the housing (10) is bent to form a neck-hanging area (10b) with an opening (10e); a control board (8), a battery (6) electrically connected to the input end of the control board (8), and an air pump (7) electrically connected to the output end of the control board (8) and used for generating negative pressure are installed in the installation cavity (10a), and the housing (10) has a ventilation port (10d) for the output end of the air pump (7) to communicate with the outside.

2. The host according to claim 1, wherein: The housing (10) includes an inner housing (4), which is bent, and the inner side of the inner housing (4) encloses the neck-hanging area (10b); an outer housing (5), which is bent; the outer housing (5) is joined to the inner housing (4) in the inner-outer direction and encloses the installation cavity (10a) with the inner housing (4).

3. The host according to claim 2, characterized in that: The inner housing (4) has a receiving cavity (4a) with an opening (4b) facing outwards; the control board (8), the battery (6), and the air pump (7) are arranged at intervals in the receiving cavity (4a) of the inner housing (4).

4. The host according to claim 2, wherein: The inner housing (4) includes an arc segment (41), a left extension segment (42) located on the left side of the arc segment (41), and a right extension segment (43) located on the right side of the arc segment (41) along its own length direction; at least a part of the arc segment (41) is made of a flexible material, so that the left extension segment (42) and the right extension segment (43) can move relatively away from or towards each other when stressed, thereby changing the size of the opening (10e).

5. The host according to claim 4, characterized in that: The inner housing (4) further includes connecting segments (44) respectively connected to the left extension segment (42) and the right extension segment (43); the connecting segments (44) are located in the installation cavity (10a), and the connecting segments (44) include at least two rotatably connected connecting blocks (443), and adjacent two connecting blocks (443) can move relatively away from or towards each other when stressed, correspondingly enabling the left extension segment (42) and the right extension segment (43) to move relatively away from or towards each other, thereby changing the size of the opening (10e); the hardness of the connecting block (443) is greater than the hardness of the arc segment (41).

6. The host according to claim 4, characterized in that: The inner housing (4) further includes connecting segments (44) located in the installation cavity (10a) and respectively connected to the left extension segment (42) and the right extension segment (43); the left extension segment (42), the right extension segment (43), and the connecting segments (44) are an integral part; the arc segment (41) is connected to at least one of the left extension segment (42), the right extension segment (43), and the connecting segments (44), or the arc segment (41) is connected to the outer housing (5).

7. The host according to claim 5, wherein: The connecting segment (44) further includes an upper arc bar (441); a lower arc bar (442); each of the connecting blocks (443) is connected to the upper arc bar (441) and the lower arc bar (442), and all the connecting blocks (443) are distributed at intervals along the length direction of the housing (10), and through holes (444) penetrating in the inner-outer direction are formed between adjacent two connecting blocks (443); at least a part of the upper arc bar (441) and the lower arc bar (442) is made of a flexible material, so that adjacent two connecting blocks (443) are rotatably connected.

8. The host according to claim 5 or 6, characterized in that: A heating sheet (9) or / and a refrigerating sheet is provided between the connecting section (44) and the arc section (41).

9. The host according to claim 1, characterized in that: The housing (10) has left and right sides along its own length direction; The battery (6) and the air pump (7) are respectively located on the left and right sides; When the main body (100) is projected in the up and down direction, the highest point of the inner wall of the housing (10) for defining the neck-hanging area (10b) is denoted as point A; The center-of-gravity position of the battery (6) is denoted as point B, and the vertical distance from point B to point A is denoted as H1, and the range of H1 is: 60 - 150 mm; The center-of-gravity position of the air pump (7) is denoted as point C, and the vertical distance from point C to point A is denoted as H2, and the range of H2 is: 60 - 150 mm.

10. A breast pump, characterized in that: It includes a main body (100) for a breast pump according to any one of claims 1 to 9, and a milk collection device (200) connected to the output end of the air pump (7) of the main body (100) through a ventilation port (10d).

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