Breast pump, self-adsorption type breast pumping device and self-adsorption cover of self-adsorption type breast pumping device

Abstract

The utility model discloses a breast pump, a self-adsorption type breast pumping device and a self-adsorption cover of the self-adsorption type breast pumping device, the self-adsorption type breast pumping device comprises a milk discharging one-way valve, the self-adsorption cover and a negative pressure forming unit, and the self-adsorption cover comprises an assembling ring body and a deformable horn cover body extending outwards from the assembling ring body. The negative pressure forming unit is provided with a negative pressure cavity, a gas exchange channel communicated with the negative pressure cavity, a milk sucking cavity independent of the negative pressure cavity, an assembling opening and a milk discharging channel, the assembling opening and the milk discharging channel are communicated with the milk sucking cavity, and the space size of the negative pressure cavity is in negative correlation with the space size of the milk sucking cavity. The milk discharging one-way valve is arranged on the negative pressure forming unit and is used for selectively opening and closing the milk discharging channel, the assembling ring body of the self-adsorption cover is assembled on the negative pressure forming unit at the position of the assembling opening, and when the self-adsorption type milk sucking device is adsorbed on the breast, the milk discharging channel can be selectively opened and closed through the milk discharging one-way valve. And a negative pressure space is formed between the self-adsorption cover and the breast.

Description

Technical Field

[0001] The utility model relates to a breast pump, belonging to the technical field of mother and baby products, and particularly relates to a breast pump, a self-adsorbing breast milk sucking device and a self-adsorbing cover thereof. Background Art

[0002] In recent years, wearable breast pumps for helping lactating mothers perform breast milk sucking operations have become increasingly popular. Existing wearable breast pumps allow users to place them inside their underwear, and the underwear fixes the wearable breast pump at the breast position. In this way, users can suck milk while walking and the sucking process does not require hand participation. However, existing wearable breast pumps still have many defects. For example, existing wearable breast pumps require the assistance of underwear for fixation, which not only increases the complexity during use, but also affects the milk sucking effect due to unsuitable underwear or improper wearing. Moreover, the method of using underwear to assist in fixing the wearable breast pump at the breast position will cause additional pressure on the breast, resulting in discomfort for users during the milk sucking process and even affecting breast health in the long term. Based on this, the inventors of the present utility model are committed to developing a breast pump that can be fixed at the breast position without any assistance. Summary of the Utility Model

[0003] An object of the present utility model is to provide a breast pump, a self-adsorbing breast milk sucking device and a self-adsorbing cover thereof, wherein the self-adsorbing breast milk sucking device can adsorb on the breast without the assistance of underwear to achieve naked sucking.

[0004] An object of the present utility model is to provide a breast pump, a self-adsorbing breast milk sucking device and a self-adsorbing cover thereof, wherein the self-adsorbing breast milk sucking device can form a negative pressure space between the horn-shaped cover body of the self-adsorbing cover and the breast, so as to adsorb the self-adsorbing breast milk sucking device on the breast without the assistance of underwear.

[0005] An object of the present utility model is to provide a breast pump, a self-adsorbing breast milk sucking device and a self-adsorbing cover thereof, wherein during the process of the user adsorbing the self-adsorbing breast milk sucking device on the breast, first, the horn-shaped cover body is flipped, then the position of the horn-shaped cover body for connecting the assembly ring body is allowed to abut against the areola, and then the horn-shaped cover body is restored so that the horn-shaped cover body wraps a part of the breast. In this way, the self-adsorbing breast milk sucking device can form the negative pressure space between the horn-shaped cover body and the breast for adsorbing the self-adsorbing breast milk sucking device on the breast without the assistance of underwear.

[0006] An object of the present utility model is to provide a breast pump, a self-adsorbing breast milk sucking device and a self-adsorbing cover thereof, wherein the air in the negative pressure space can be discharged through an exhaust check valve, so that the self-adsorbing breast milk sucking device can be reliably adsorbed on the breast.

[0007] According to another aspect of the present utility model, the present utility model further provides a self - adsorption cover, which comprises:

[0008] An assembly ring body; and

[0009] A deformable horn cover body, wherein the horn cover body has a cover body rear part and a cover body front part, the cover body rear part connects the cover body front part and the assembly ring body, and an included angle α exists between the extending direction of the cover body rear part and the central axis of the self - adsorption cover, and an included angle β exists between the extending direction of the cover body front part and the central axis of the self - adsorption cover, and the included angles α and β satisfy: α > β.

[0010] According to an embodiment of the present utility model, the included angle β satisfies: 15° ≤ β ≤ 40°.

[0011] According to an embodiment of the present utility model, the distance between the front side of the top of the horn cover body and the rear side of the assembly ring body is greater than the distance between the front side of the bottom of the horn cover body and the rear side of the assembly ring body.

[0012] According to an embodiment of the present utility model, the horn cover body has an exhaust passage, and the self - adsorption cover includes an exhaust check valve, and the exhaust check valve is arranged on the horn cover body for selectively opening and closing the exhaust passage of the horn cover body.

[0013] According to an embodiment of the present utility model, the exhaust check valve and the horn cover body are integrally formed.

[0014] According to an embodiment of the present utility model, the self - adsorption cover further includes a small cover body, the small cover body is arranged at the connection position of the horn cover body and the assembly ring body, and at least a part of the small cover body is surrounded by the horn cover body.

[0015] According to another aspect of the present utility model, the present utility model further provides a self - adsorption cover, which comprises:

[0016] An assembly ring body;

[0017] A deformable horn cover body, wherein the horn cover body extends integrally outward from the assembly ring body, and the horn cover body has an exhaust passage; and

[0018] An exhaust check valve, wherein the exhaust check valve is arranged on the horn cover body for selectively opening and closing the exhaust passage of the horn cover body.

[0019] According to another aspect of the present utility model, the present utility model further provides a self - adsorption milk sucking device, which comprises:

[0020] Milk discharge check valve;

[0021] A self-adsorption cover, wherein the self-adsorption cover comprises a mounting ring body and a deformable horn cover body extending outward from the mounting ring body; and

[0022] A negative pressure forming unit, wherein the negative pressure forming unit has a negative pressure chamber, a gas exchange channel connected to the negative pressure chamber, a milk suction chamber independent of the negative pressure chamber, and an assembly opening and a milk discharge channel connected to the milk suction chamber, the spatial size of the negative pressure chamber is negatively correlated with the spatial size of the milk suction chamber, wherein the milk discharge one-way valve is arranged on the negative pressure forming unit for selectively opening and closing the milk discharge channel of the negative pressure forming unit, wherein the assembly ring body of the self-adsorption cover is assembled to the negative pressure forming unit at the position of the assembly opening.

[0023] According to one embodiment of the utility model, the speaker cover body has a cover body rear part and a cover body front part, the cover body rear part is connected to the cover body front part and the assembly ring body, wherein there is an angle α between the cover body rear part and the central axis of the self-adsorption cover, and there is an angle β between the cover body front part and the central axis of the self-adsorption cover, and the angle α and the angle β satisfy: α>β.

[0024] According to an embodiment of the utility model, the self-adsorption cover further includes a small cover body, the small cover body is arranged at the connection position of the speaker cover body and the assembly ring body, and at least a part of the small cover body is surrounded by the speaker cover body.

[0025] According to an embodiment of the present utility model, the rear side of the mounting ring body is higher than the opening of the milk discharge channel of the negative pressure forming unit.

[0026] According to an embodiment of the utility model, the horn cover has an exhaust passage, wherein the self-adsorption cover includes an exhaust one-way valve, and the exhaust one-way valve is arranged on the horn cover for selectively opening and closing the exhaust passage of the horn cover.

[0027] According to an embodiment of the present utility model, one end of the exhaust one-way valve facing away from the speaker cover is located outside the negative pressure forming unit.

[0028] According to one embodiment of the utility model, the negative pressure forming unit has a valve cavity and a connecting channel, the valve cavity is located above the milk suction cavity, the connecting channel connects the valve cavity and the milk suction cavity, and the end of the exhaust one-way valve facing away from the horn cover body extends into the valve cavity of the negative pressure forming unit.

[0029] According to an embodiment of the present utility model, the gas flow rate at the connection position between the communication channel and the valve cavity is less than the gas flow rate at the connection position between the communication channel and the milk suction cavity.

[0030] According to an embodiment of the present utility model, the distance between the front side of the top of the horn cover body and the rear side of the assembly ring body is greater than the distance between the front side of the bottom of the horn cover body and the rear side of the assembly ring body.

[0031] According to an embodiment of the present utility model, the negative pressure forming unit includes a support housing and a negative pressure forming portion. The support housing has a housing cavity, a housing opening and a housing notch respectively communicating with the housing cavity. The negative pressure forming portion includes a deformable bowl, a ring-shaped skeleton disposed at the opening of the deformable bowl, and a mounting arm extending downward from the skeleton. The skeleton is mounted on the support housing at the housing opening. The deformable bowl extends into the housing cavity of the support housing. The mounting arm is located at the housing notch of the support housing. Wherein, the negative pressure cavity of the negative pressure forming unit is formed between the support housing and the deformable bowl, the gas exchange channel of the negative pressure forming unit is formed in the support housing, the milk suction cavity and the assembly opening of the negative pressure forming unit are formed in the skeleton, and the milk discharging channel of the negative pressure forming unit extends from the inner wall of the deformable bowl through the skeleton to the end of the mounting arm or extends from the inner wall of the skeleton to the end of the mounting arm. Wherein, the milk discharging one-way valve is mounted on the mounting arm.

[0032] According to an embodiment of the present utility model, the self-adsorbing cover further includes a limiting portion. The limiting portion extends from the peripheral wall of the assembly ring body in a direction substantially perpendicular to the extending direction of the assembly ring body, and there is a gap between the limiting portion and the horn cover body. Wherein, the limiting portion can abut against the skeleton of the negative pressure forming portion.

[0033] According to an embodiment of the present utility model, the support housing includes a housing main body and an outer cover housing, and the support housing has a housing receiving cavity. The housing cavity, the housing opening, and the housing notch of the support housing are formed in the housing main body. The outer cover housing is installed on the housing main body, and the support housing forms the housing receiving cavity between the housing main body and the outer cover housing. The outer cover housing has a positioning hole, and the positioning hole communicates with the housing receiving cavity of the support housing. The negative pressure forming unit includes an air duct unit. The air duct unit includes an air guiding seat and a commutation seat. The air guiding seat has a first air duct extending horizontally, a bottom socket, a top socket, and a top boss. The bottom socket and the top socket are respectively communicated with the first air duct, and the opening of the top socket is formed on the end face of the top boss. The housing main body has a housing insertion arm, and the housing insertion arm extends into the housing receiving cavity of the support housing. The opening of the gas exchange channel of the negative pressure forming unit is formed on the end face of the housing insertion arm of the housing main body. The air guiding seat is disposed on the top of the housing main body, the housing insertion arm of the housing main body is inserted into the bottom socket of the air guiding seat, the top boss of the air guiding seat extends into the positioning hole of the outer cover housing, the air guiding seat is received in the housing receiving cavity of the support housing, and the first air duct of the air guiding seat is communicated with the gas exchange channel of the negative pressure forming unit. The commutation seat has a bottom insertion arm, a side insertion arm, and a second air duct. One opening of the second air duct is formed on the end face of the bottom insertion arm, and the other opening is formed on the end face of the side insertion arm. The bottom insertion arm of the commutation seat is inserted into the top socket of the air guiding seat, so that the negative pressure cavity of the negative pressure forming unit, the gas exchange channel, the first air duct of the air guiding seat, and the second air duct of the commutation seat are sequentially communicated.

[0034] In another aspect of the present utility model, the present utility model further provides a breast pump, which includes a main body, a trachea, and a self-adsorbing breast milk pumping device. The trachea connects the main body and the self-adsorbing breast milk pumping device. The self-adsorbing breast milk pumping device further includes:

[0035] A milk discharging one-way valve;

[0036] A self-adsorbing cover, where the self-adsorbing cover includes an assembly ring body and a deformable bell-shaped cover body extending outward from the assembly ring body; and

[0037] A negative pressure forming unit, wherein the negative pressure forming unit has a negative pressure chamber, a gas exchange channel communicating with the negative pressure chamber, a milk suction chamber independent of the negative pressure chamber, an assembly opening communicating with the milk suction chamber, and a milk discharge channel, the spatial size of the negative pressure chamber is negatively correlated with the spatial size of the milk suction chamber, wherein the milk discharge one-way valve is arranged in the negative pressure forming unit to selectively open and close the milk discharge channel of the negative pressure forming unit, and the assembly ring body of the self-adsorbing cover is assembled to the negative pressure forming unit at the position of the assembly opening. Description of the Drawings

[0038] Figure 1 is a schematic diagram of a breast pump according to a preferred embodiment of the present invention.

[0039] Figure 2 is a three-dimensional schematic diagram of a perspective of a self-adsorbing milk suction device of the breast pump according to the above preferred embodiment of the present invention.

[0040] Figure 3 is a three-dimensional schematic diagram of another perspective of the self-adsorbing milk suction device of the breast pump according to the above preferred embodiment of the present invention.

[0041] Figure 4 is a cross-sectional schematic diagram of the self-adsorbing milk suction device of the breast pump according to the above preferred embodiment of the present invention.

[0042] Figure 5 is a schematic diagram of one of the processes of the self-adsorbing milk suction device of the breast pump being adsorbed on the breast according to the above preferred embodiment of the present invention.

[0043] Figure 6 is a schematic diagram of another of the processes of the self-adsorbing milk suction device of the breast pump being adsorbed on the breast according to the above preferred embodiment of the present invention.

[0044] Figure 7 is a schematic diagram of the third of the processes of the self-adsorbing milk suction device of the breast pump being adsorbed on the breast according to the above preferred embodiment of the present invention, showing the state of the self-adsorbing milk suction device being adsorbed on the breast.

[0045] Figure 8A and Figure 8B are respectively three-dimensional schematic diagrams of different perspectives of a partial structure of a variant example of the self-adsorbing milk suction device of the breast pump according to the above preferred embodiment of the present invention.

[0046] Figure 9A and Figure 9BIt is an exploded view of the above-mentioned partial structure of the above-mentioned deformation example of the self-adsorbing milk sucking device of the milk sucker according to the above-mentioned preferred embodiment of the present invention from different perspectives.

[0047] Figure 10 It is a cross-sectional view of the above-mentioned partial structure of the above-mentioned deformation example of the self-adsorbing milk sucking device of the milk sucker according to the above-mentioned preferred embodiment of the present invention.

[0048] Figure 11 It is a cross-sectional view of a partial structure of another deformation example of the self-adsorbing milk sucking device of the milk sucker according to the above-mentioned preferred embodiment of the present invention.

[0049] Figure 12 It is a cross-sectional view of the above-mentioned partial structure of the above-mentioned deformation example of the self-adsorbing milk sucking device of the milk sucker according to the above-mentioned preferred embodiment of the present invention. Detailed implementation manners

[0050] Before detailing any embodiment of the present invention, it should be understood that in its application, the present invention is not limited to the construction and arrangement details of the components described in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and can be practiced or carried out in various ways. Additionally, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be regarded as restrictive. As used herein, "including" or "having" and their variants are intended to cover the items listed hereinafter and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variants are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0051] And, on the one hand, in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention; on the other hand, the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as limiting the quantity.

[0052] Refer to the attached drawings in the specification of the present inventionFigures 1 to 7 , a breast pump according to a preferred embodiment of the present utility model will be disclosed and described hereinafter, wherein the breast pump includes at least one self - adsorbing milk sucking device 10, a main body 20, and an air tube 30 connecting the self - adsorbing milk sucking device 10 and the main body 20. When the self - adsorbing milk sucking device 10 adsorbs on the breast, the main body 20 can assist the user in sucking milk when it works. Preferably, the number of the self - adsorbing milk sucking devices 10 is two, so that the two self - adsorbing milk sucking devices 10 can respectively adsorb on two breasts to suck milk simultaneously.

[0053] In the Figures 1 to 7 specific example of the breast pump of the present utility model shown in the accompanying drawings, without the assistance of a bra, the breast pump allows the self - adsorbing milk sucking device 10 to adsorb on the breast to achieve naked sucking. It should be noted that the "naked sucking" described for the breast pump of the present utility model means that the self - adsorbing milk sucking device 10 directly adsorbs on the breast without the assistance of any items such as a bra, and sucks milk when the main body 20 is turned on. Nevertheless, the breast pump of the present utility model also allows the user to use it while wearing a bra. At this time, a part of the self - adsorbing milk sucking device 10 is placed between the bra and the breast, which greatly reduces the size of the part of the self - adsorbing milk sucking device 10 located between the bra and the breast to reduce the pressure on the breast. In this way, it is not only beneficial to milk sucking but also beneficial to breast health.

[0054] Specifically, referring to the Figures 1 to 7 accompanying drawings, the self - adsorbing milk sucking device 10 includes a negative - pressure forming unit 11, a self - adsorbing cover 12, and a milk - discharging one - way valve 13. The self - adsorbing cover 12 and the milk - discharging one - way valve 13 are respectively arranged at the front part and the bottom of the negative - pressure forming unit 11, and the negative - pressure forming unit 11 is connected to the main body 20. When the user adsorbs the self - adsorbing milk sucking device 10 on the breast through the self - adsorbing cover 12, a negative - pressure space 100 is formed between the self - adsorbing cover 12 and the breast, so as to realize adsorbing the self - adsorbing milk sucking device 10 on the breast without the assistance of a bra.

[0055] More specifically, the negative pressure forming unit 11 has a negative pressure chamber 1101, a gas exchange channel 1102, a milk suction chamber 1103, an assembly opening 1104, and a milk discharging channel 1105. The gas exchange channel 1102 communicates with the negative pressure chamber 1101. The main unit 20 can change the air pressure state of the negative pressure chamber 1101 through the gas exchange channel 1102, that is, the main unit 20 can increase and decrease the air pressure of the negative pressure chamber 1101 through the gas exchange channel 1102 of the negative pressure forming unit 11. The assembly opening 1104 and the milk discharging channel 1105 communicate with the milk suction chamber 1103 respectively. The negative pressure chamber 1101 and the milk suction chamber 1103 of the negative pressure forming unit 11 are independent of each other, and the spatial size of the negative pressure chamber 1101 and the spatial size of the milk suction chamber 1103 are negatively correlated. When the space of the negative pressure chamber 1101 of the negative pressure forming unit 11 becomes larger, the space of the milk suction chamber 1103 becomes smaller. Correspondingly, when the space of the negative pressure chamber 1101 of the negative pressure forming unit 11 becomes smaller, the space of the milk suction chamber 1103 becomes larger. In addition, the air pressure state of the negative pressure chamber 1101 of the negative pressure forming unit 11 and the air pressure state of the milk suction chamber 1103 are positively correlated. When the air pressure of the negative pressure chamber 1101 of the negative pressure forming unit 11 increases, the air pressure of the milk suction chamber 1103 increases. When the air pressure of the negative pressure chamber 1101 of the negative pressure forming unit 11 decreases, the air pressure of the milk suction chamber 1103 decreases.

[0056] The self - adsorption cover 12 includes an assembly ring body 121 and a deformable horn - shaped cover body 122 extending outward from the assembly ring body 121. The assembly ring body 121 of the self - adsorption cover 12 is assembled to the negative pressure forming unit 11 at the position of the assembly opening 1104 of the negative pressure forming unit 11. The milk discharging one - way valve 13 is disposed at the position of the milk discharging channel 1105 of the negative pressure forming unit 11 to selectively open and close the milk discharging channel 1105 of the negative pressure forming unit 11.

[0057] Reference attachment Figures 5 to 7, the process of attaching the self - adsorbing milking device 10 to the breast can be as follows: First, flip the bell - shaped body 122 of the self - adsorption cover 12 towards the negative - pressure forming unit 11; Second, allow the position of the bell - shaped body 122 for connecting the assembly ring body 121 to contact the areola; Third, restore the bell - shaped body 122 so that the bell - shaped body 122 wraps a part of the breast to form the negative - pressure space 100 between the bell - shaped body 122 and the breast, allowing the self - adsorbing milking device 10 to be attached to the breast to achieve naked suction. That is to say, after the self - adsorbing milking device 10 is attached to the breast, the breast closes the front opening of the bell - shaped body 122, and the areola closes the rear opening of the bell - shaped body 122. In this way, the self - adsorbing milking device 10 not only allows the negative - pressure space 100 to be formed between the bell - shaped body 122 and the breast, but also allows the milking cavity 1103 of the negative - pressure forming unit 11 to form a closed space, which is conducive to ensuring the milking efficiency.

[0058] During the milking process, when the main unit 20 sucks air, the main unit 20 allows the air in the negative - pressure cavity 1101 of the negative - pressure forming unit 11 to be discharged through the gas - exchange channel 1102, so as to reduce the air pressure in the negative - pressure cavity 1101 and decrease the space of the negative - pressure cavity 1101. At this time, the space of the milking cavity 1103 of the negative - pressure forming unit 11 increases and the air pressure decreases, so as to suck out the milk from the breast and temporarily store it in the milking cavity 1103 of the negative - pressure forming unit 11. When the main unit 20 exhausts air, the main unit 20 allows air to be supplemented into the negative - pressure cavity 1101 of the negative - pressure forming unit 11, so as to increase the air pressure in the negative - pressure cavity 1101 and increase the space of the negative - pressure cavity 1101. At this time, the space of the milking cavity 1103 of the negative - pressure forming unit 11 decreases and the air pressure increases, and the milk - discharging one - way valve 13 automatically opens to discharge the milk temporarily stored in the milking cavity 1103 of the negative - pressure forming unit 11. Repeating this process, the milking machine realizes milking.

[0059] That is to say, the space of the milking cavity 1103 of the negative - pressure forming unit 11 decreases as the space of the negative - pressure cavity 1101 increases and increases as the space of the negative - pressure cavity 1101 decreases, so as to realize that the air pressure in the milking cavity 1103 of the negative - pressure forming unit 11 increases when the air pressure in the negative - pressure cavity 1101 increases and decreases when the air pressure in the negative - pressure cavity 1101 decreases.

[0060] Further, the self - adsorbing milk suction device 10 includes a milk bottle 14, the milk bottle 14 is installed on the negative - pressure forming unit 11, and the opening of the milk discharging one - way valve 13 faces the milk bottle 14. In this way, after the milk discharging one - way valve 13 is automatically opened, the milk stored temporarily in the milk suction cavity 1103 of the negative - pressure forming unit 11 can be collected into the milk bottle 14.

[0061] Continue to refer to the attached Figures 1 to 7 As shown, the negative - pressure forming unit 11 includes a support housing 111 and a negative - pressure forming part 112. The support housing 111 has a housing cavity 1111, a housing opening 1112 and a housing notch 1113 which are respectively communicated with the housing cavity 1111. The negative - pressure forming part 112 includes a deformable bowl 1121, an annular skeleton 1122 arranged at the opening of the deformable bowl 1121, and a mounting arm 1123 extending downward from the skeleton 1122. The skeleton 1122 is installed on the support housing 111 at the housing opening 1112. The deformable bowl 1121 extends into the housing cavity 1111 of the support housing 111, and the mounting arm 1123 is located at the housing notch 1113 of the support housing 111. Wherein, the negative - pressure cavity 1101 of the negative - pressure forming unit 11 is formed between the support housing 111 and the deformable bowl 1121, the gas exchange channel 1102 of the negative - pressure forming unit 11 is formed in the support housing 111, the milk suction cavity 1103 and the assembly opening 1104 of the negative - pressure forming unit 11 are formed in the skeleton 1122, and the milk discharging channel 1105 of the negative - pressure forming unit 11 extends from the inner wall of the deformable bowl 1121 through the skeleton 1122 to the end of the mounting arm 1123. Optionally, in other examples of the breast pump of the present utility model, the milk discharging channel 1105 of the negative - pressure forming unit 11 can extend from the inner wall of the skeleton 1122 to the end of the mounting arm 1123.

[0062] In other words, whether the opening of the milk discharging channel 1105 of the negative - pressure forming unit 11 is formed on the inner wall of the deformable bowl 1121 or on the inner wall of the skeleton 1122 depends on the width of the joint position between the deformable bowl 1121 and the skeleton 1122. In an embodiment where the width dimension of the joint position between the deformable bowl 1121 and the skeleton 1122 is relatively wide, the opening of the negative - pressure forming unit 1105 is formed on the inner wall of the deformable bowl 1121. In the case where the width dimension of the joint position between the deformable bowl 1121 and the skeleton 1122 is relatively narrow, the opening of the negative - pressure forming unit 1105 is formed on the inner wall of the skeleton 1122.

[0063] It is also worth mentioning that the specific manner in which the skeleton 1122 is disposed at the opening of the deformable bowl 1121 is not limited in the breast pump of the present utility model. For example, in some embodiments, after the skeleton 1122 and the deformable bowl 1121 are respectively formed, the skeleton 1122 is bonded to the opening of the deformable bowl 1121 by glue; in other embodiments, based on the two-shot injection molding process, the skeleton 1122 can also be disposed at the opening of the deformable bowl 1121.

[0064] Both the milk discharging one-way valve 13 and the milk bottle 14 are installed on the mounting arm 1123 of the negative pressure forming portion 112. Specifically, the mounting arm 1123 of the negative pressure forming portion 112 has an inner arm body 11231 and an outer arm body 11232 surrounding the inner arm body 11231. The milk discharging one-way valve 13 is installed on the inner arm body 11231, and the milk bottle 14 is installed on the outer arm body 11232. In this way, both the milk discharging one-way valve 13 and the milk bottle 14 are installed on the mounting arm 1123, and the opening of the milk discharging one-way valve 13 faces the milk bottle 14.

[0065] When the air pressure in the negative pressure chamber 1101 of the negative pressure forming unit 11 changes, the shape of the deformable bowl 1121 of the negative pressure forming portion 112 changes accordingly. At the same time, the air pressure and the spatial size of the milk sucking chamber 1103 of the negative pressure forming unit 11 change. Specifically, when the air pressure in the negative pressure chamber 1101 of the negative pressure forming unit 11 decreases, the deformable bowl 1121 of the negative pressure forming portion 112 deforms in a direction close to the bottom of the housing cavity 1111 of the support housing 111 to reduce the air pressure in the milk sucking chamber 1103 of the negative pressure forming unit 11. Correspondingly, when the air pressure in the negative pressure chamber 1101 of the negative pressure forming unit 11 increases, the deformable bowl 1121 of the negative pressure forming portion 112 deforms in a direction away from the bottom of the housing cavity 1111 of the support housing 111 to increase the air pressure in the milk sucking chamber 1103 of the negative pressure forming unit 11.

[0066] It is worth mentioning that when the air pressure in the negative pressure chamber 1101 of the negative pressure forming unit 11 increases, the deformable bowl 1121 of the negative pressure forming portion 112 can deform in a direction away from the bottom of the housing cavity 1111 of the support housing 111 because elastic potential energy is accumulated after the deformable bowl 1121 of the negative pressure forming portion 112 deforms in a direction close to the bottom of the housing cavity 1111 of the support housing 111.

[0067] Refer to the attached Figure 4, the horn-shaped cover body 122 of the self-adsorbing cover 12 has a cover body rear part 1221 and a cover body front part 1222. The cover body rear part 1221 connects the cover body front part 1222 and the assembly ring body 121. An included angle α exists between the extending direction of the cover body rear part 1221 and the central axis of the self-adsorbing cover 12, and an included angle β exists between the extending direction of the cover body front part 1222 and the central axis of the self-adsorbing cover 12. The included angles α and β satisfy: α > β. In this way, on the one hand, the front side of the horn-shaped cover body 122 can have a larger opening, and the rear side of the horn-shaped cover body 122 (i.e., the position where the horn-shaped cover body 122 is used to connect the assembly ring body 121) can have a smaller opening. Thus, when the self-adsorbing milking device 10 is adsorbed on the breast, a negative pressure space 100 can be formed between the horn-shaped cover body 122 and the breast. On the other hand, the center of gravity of the self-adsorbing milking device 10 can be closer to the self-adsorbing cover 12. Therefore, after the self-adsorbing milking device 10 is adsorbed on the breast, the center of gravity of the self-adsorbing milking device 10 is closer to the body, so as to reduce the component force of the gravity of the self-adsorbing milking device 10 acting on the breast, which can not only reduce the requirement for the adsorption force of the self-adsorbing milking device 10 on the self-adsorbing cover 12, but also avoid the self-adsorbing milking device 10 causing compression to the breast during milking to ensure breast health.

[0068] It can be understood that the angle of the included angle β between the extending direction of the cover body front part 1222 of the horn-shaped cover body 122 and the central axis of the self-adsorbing cover 12 cannot be too small or too large. If the angle of this included angle β is too small, it will cause the opening size of the horn-shaped cover body 122 to be too small, and further cause the horn-shaped cover body 122 to not cover the breast and the position where the horn-shaped cover body 122 is used to connect the assembly ring body 122 to not contact the areola. Even if the breast is forced into the horn-shaped cover body 122, the horn-shaped cover body 122 will provide a large clamping force and act on the breast, resulting in breast discomfort and even causing damage to the breast. If the angle of this included angle β is too large, it will cause the opening size of the horn-shaped cover body 122 to be too large, and further cause the horn-shaped cover body 122 to not fit the breast and make the self-adsorbing cover 12 unable to adsorb the breast. In the self-adsorbing milking device 10 of the present invention, the minimum value of this included angle β is preferably not less than 15°, and the maximum value is preferably not greater than 40°. Therefore, the suitable range of this included angle β is from 15° to 40°. In other words, this included angle β satisfies: 15° ≤ β ≤ 40°.

[0069] In addition, the hardness of the horn-shaped cover body 122 of the self-adsorbing cover 12 ranges from 10A to 50A to improve comfort while ensuring that the horn-shaped cover body 122 is flexible. The surface roughness of the inner wall of the horn-shaped cover body 122 of the self-adsorbing cover 12 ranges from Ra0.016um to Ra0.063um. In this way, when the horn-shaped cover body 122 adsorbs to the breast, a reasonable frictional force exists between the horn-shaped cover body 122 and the breast, enabling the self-adsorbing cover 12 to stably adsorb to the breast.

[0070] Preferably, continuing to refer to the attached Figure 4 , the distance L1 between the front side of the top of the horn-shaped cover body 122 of the self-adsorbing cover 12 and the rear side of the assembly ring body 121 is greater than the distance L2 between the front side of the bottom of the horn-shaped cover body 122 and the rear side of the assembly ring body 121. That is, on the front side of the horn-shaped cover body 122, the top of the horn-shaped cover body 122 protrudes more forward than the bottom. Thus, the contact area between the horn-shaped cover body 122 of the self-adsorbing cover 12 and the upper part of the breast is greater than the contact area between the horn-shaped cover body 122 and the lower part of the breast. In this way, the shape of the horn-shaped cover body 122 better matches the shape of the breast, which is conducive to increasing the frictional force between the horn-shaped cover body 122 and the breast, enabling the self-adsorbing milk extraction device 10 to more firmly adsorb to the breast.

[0071] In addition, in the self-adsorbing milk extraction device 10 of the present utility model, the negative pressure forming unit 11 does not need to be configured with any electronic components. Instead, the gas exchange channel 1102 of the negative pressure forming unit 11 is connected to the host 20 through a trachea 30. In this way, the self-adsorbing milk extraction device 100 can have a lighter weight and a smaller size. Not only can the center of gravity of the self-adsorbing milk extraction device 10 be closer to the self-adsorbing cover 12 to enable the self-adsorbing milk extraction device 10 to be reliably adsorbed to the breast, but also the lighter weight can reduce the burden on the breast. At the same time, since the negative pressure forming unit 11 has a smaller size, even if the user chooses to use an undergarment to assist in adsorbing the self-adsorbing milk extraction device 10 to the breast position, the negative pressure forming unit 11 will not overly stretch the undergarment outwards. At the same time, the pressure exerted by the undergarment on the breast through the negative pressure forming unit 11 will also be reduced to improve the comfort of the user when milking with the milk extractor and is beneficial to breast health.

[0072] Continuing to refer to the attached Figure 4, the self - adsorption cover 12 includes a small cover body 123. The small cover body 123 is disposed at the connection position between the horn cover body 122 and the assembly ring body 121, and at least a part of the small cover body 123 is surrounded by the horn cover body 122. In this way, when the user adsorbs the self - adsorption milk suction device 10 on the breast, the inner wall of the small cover body 123 fits against the areola in a manner that the small cover body 123 covers the nipple, so as to ensure that the milk suction cavity 1103 of the negative pressure forming unit 11 forms a closed space and to ensure the tightness of the negative pressure space 100 formed between the breast and the horn cover body 122, thereby enabling the self - adsorption milk suction device 10 to be reliably adsorbed on the breast.

[0073] It is worth mentioning that the specific manner in which the small cover body 123 is disposed at the connection position between the horn cover body 122 and the assembly ring body 121 is not limited in the milk suction device of the present utility model. For example, in Figures 1 to 7 this specific example of the milk suction device shown, the small cover body 123 can integrally extend forward from the connection position between the horn cover body 122 and the assembly ring body 121 to dispose the small cover body 123 at the connection position between the horn cover body 122 and the assembly ring body 121. Optionally, the small cover body 123 of the milk suction device of the present utility model is detachable.

[0074] In Figures 1 to 7 this specific example of the milk suction device of the present utility model shown, the assembly ring body 121 of the self - adsorption cover 12 is detachably mounted on the negative pressure forming part 112, which enables the self - adsorption cover 12 to be conveniently cleaned to improve the hygiene of the milk suction device. At the same time, the mother can select the self - adsorption cover 12 of a suitable material, shape and / or size according to her own needs to meet personalized requirements.

[0075] Specifically, the outer diameter dimension of the assembly ring body 121 of the self - adsorption cover 12 is the same as the inner diameter dimension of the negative pressure forming part 112. Thus, after the assembly ring body 121 of the self - adsorption cover 12 is mounted on the negative pressure forming part 112, based on the frictional force between the outer wall of the assembly ring body 121 and the inner wall of the negative pressure forming unit 112, the self - adsorption cover 12 can be reliably mounted on the negative pressure forming unit 11.

[0076] Refer to Figures 4 to 7, after the assembly ring body 121 of the self - adsorption cover 12 is installed on the negative - pressure forming part 112, the rear side of the assembly ring body 121 is higher than the opening formed by the milk - discharging channel 1105 of the negative - pressure forming unit 11 on the inner wall of the deformation bowl 1121. In this way, the sucked milk can be blocked by the assembly ring body 121 of the self - adsorption cover 12, preventing the milk from flowing to the position of the horn cover body 122, and further avoiding the leakage of milk from the fitting position between the horn cover body 122 and the breast. That is, the milk is only allowed to be discharged through the milk - discharging channel 1105 of the negative - pressure forming unit 11 into the milk bottle 14.

[0077] Continue to refer to the appendix Figure 4 , the self - adsorption cover 12 further includes a limiting part 124. The limiting part 124 extends from the peripheral wall of the assembly ring body 121 in a direction substantially perpendicular to the extending direction of the assembly ring body 121, and there is a gap between the limiting part 124 and the rear part 1221 of the cover body of the horn cover body 122. In this way, when the self - adsorption cover 12 is assembled at the position of the assembly opening 1104 of the negative - pressure forming unit 11, the limiting part 124 restricts the assembly depth of the assembly ring body 121 by abutting against the framework 1122 of the negative - pressure forming part 112. In this way, on the one hand, the limiting part 124 can ensure that there is a gap between the rear part 1221 of the horn cover body 122 and the negative - pressure forming unit 11, so that when the position of the assembly ring body 121 changes with the change of the position of the negative - pressure forming unit 11, the horn cover body 122 can deform without detaching from the breast. On the other hand, the limiting part 124 can ensure that the assembly ring body 121 extends through the assembly opening 1104 of the negative - pressure forming unit 11 to the outside of the opening formed by the milk - discharging channel 105 of the negative - pressure forming unit 11 on the inner wall of the deformation bowl 1121, avoiding the assembly ring body 121 blocking the opening formed by the milk - discharging channel 105 of the negative - pressure forming unit 11 on the inner wall of the deformation bowl 1121. Preferably, the limiting part 124 of the self - adsorption cover 12 is annular.

[0078] Refer to the appendix Figure 2 、 Figure 3 and Figure 4, the support housing 111 includes a housing main body 1114 and an outer cover housing 1115, and the support housing 111 has a housing receiving cavity 1116. The housing cavity 1111, the housing opening 1112, and the housing notch 1113 of the support housing 111 are formed in the housing main body 1114. The outer cover housing 1115 is mounted on the housing main body 1114, and the support housing 111 forms the housing receiving cavity 1116 between the housing main body 1114 and the outer cover housing 1115. Wherein the outer cover housing 1115 has a positioning hole 11151, and the positioning hole 11151 communicates with the housing receiving cavity 1116 of the support housing 111.

[0079] It is worth mentioning that the specific manner in which the housing main body 1114 and the outer cover housing 1115 are mutually mounted is not limited in the breast pump of the present utility model. For example, in Figures 1 to 7 this specific example of the breast pump of the present utility model shown, screws can be used to mount the housing main body 1114 and the outer cover housing 1115.

[0080] Preferably, the support housing 111 includes a decorative cover 1117, and the decorative cover 1117 is mounted on the housing main body 1114 to cover the screws for mounting the housing main body 1114 and the outer cover housing 1115. More preferably, the decorative cover 1117 has a plurality of buckle arms 11171, and the housing main body 1114 has a plurality of buckle holes 11141. The buckle holes 11141 of the housing main body 1114 communicate with the housing receiving cavity 1116 of the support housing 111. Wherein each of the buckle arms 11171 of the decorative cover 1117 extends into the housing receiving cavity 1116 of the support housing 111 after passing through the buckle holes 11141 of the housing main body 1114 respectively, and in the housing receiving cavity 1116 of the support housing 1114, each of the buckle arms 11171 of the decorative cover 1117 automatically buckles the housing main body 1114, thereby mounting the decorative cover 1117 on the housing main body 1114.

[0081] Referring to Figures 2 to 4 , the negative pressure forming unit 11 includes an air duct unit 113, and the air duct unit 113 includes an air guide seat 1131 and a commutation seat 1132.

[0082] The air guiding seat 1131 has a first air duct 11311 extending horizontally, a bottom socket 11312, a top socket 11313, and a top boss 11314. The bottom socket 11312 and the top socket 11313 are respectively communicated with the first air duct 11311, and the opening of the top socket 11313 is formed on the end face of the top boss 11314. The housing main body 1114 has a housing insertion arm 11142 which extends into the housing accommodation cavity 1116 of the support housing 111. The opening of the gas exchange channel 1102 of the negative pressure forming unit 11 is formed on the end face of the housing insertion arm 11142 of the housing main body 1114. The air guiding seat 1131 is arranged on the top of the housing main body 1114. The housing insertion arm 11142 of the housing main body 1114 is inserted into the bottom socket 11312 of the air guiding seat 1131, and the top boss 11314 of the air guiding seat 1131 extends into the positioning hole 11151 of the outer housing 1115. In this way, the air guiding seat 1131 can be reliably accommodated in the housing accommodation cavity 1116 of the support housing 111, and the first air duct 11311 of the air guiding seat 1131 is communicated with the gas exchange channel 1102 of the negative pressure forming unit 11.

[0083] The commutation seat 1132 has a bottom insertion arm 11321, a side insertion arm 11322, and a second air duct 11323. One opening of the second air duct 11323 is formed on the end face of the bottom insertion arm 11321, and the other opening is formed on the end face of the side insertion arm 11322. The bottom insertion arm 11321 of the commutation seat 1132 is inserted into the top socket 11313 of the air guiding seat 1131, so that the negative pressure chamber 1101 of the negative pressure forming unit 11, the gas exchange channel 1102, the first air duct 11311 of the air guiding seat 1131, and the second air duct 11323 of the commutation seat 1132 are communicated in sequence. One end of the air pipe 30 is installed on the side insertion arm 11322 of the commutation seat 1132. In this way, the host 20 can change the air pressure state of the negative pressure chamber 1101 of the negative pressure forming unit 11 through the air pipe 30.

[0084] In the appendix Figures 1 to 7In this specific example of the breast pump of the present utility model shown, by arranging the air guide seat 1131 and the commutation seat 1132 at the top of the housing body 1114 of the support housing 111, the part of the negative pressure forming unit 11 for connecting the air pipe 30 (i.e., the side insertion arm 11322 of the commutation seat 1132) can be arranged at a reasonable position, avoiding this part occupying too much space. In other words, the arrangement of the air guide seat 1131 and the commutation seat 1132 of the air passage unit 113 can realize the miniaturization of the self-adsorbing breast pumping device 10. In this way, even if the user chooses to use the undergarment to assist in adsorbing the self-adsorbing breast pumping device 10 at the breast position, the negative pressure forming unit 11 of the self-adsorbing breast pumping device 10 will not overly stretch the undergarment outwards. At the same time, the pressure exerted by the undergarment on the breast through the negative pressure forming unit 11 will also be reduced, so as to improve the comfort of the user when pumping milk with the breast pump and be beneficial to breast health.

[0085] In the appendix Figures 1 to 7 In this specific example of the breast pump of the present utility model shown, the bottom jack 11312 of the commutation seat 1132 is pluggably inserted into the top jack 11313 of the air guide seat 1131. In this way, the user can change the orientation of the side insertion arm 11322 of the commutation seat 1132 as needed. For example, the user can allow the bottom insertion arm 11321 of the commutation seat 1132 to be inserted into the top jack 11313 of the air guide seat 1131 in a manner that the side insertion arm 11322 of the commutation seat 1132 faces left, or can also allow the bottom insertion arm 11321 of the commutation seat 1132 to be inserted into the top jack 11313 of the air guide seat 1131 in a manner that the side insertion arm 11322 of the commutation seat 1132 faces right. By this means, the user does not need to distinguish the directions of the two self-adsorbing breast pumping devices 10 during the process of assembling the breast pump.

[0086] It can be understood that since the housing insertion arm 11142 of the housing main body 1114 of the support housing 111 is inserted into the bottom jack 11312 of the air guide seat 1131 and the top boss 11314 of the air guide seat 1131 extends into the positioning hole 11151 of the outer housing 1115, the air guide seat 1131 can be stably received in the housing receiving cavity 1116 of the support housing 111. Thus, whether when inserting the bottom insertion arm 11321 of the commutation seat 1132 into the top jack 11313 of the air guide seat 1131 or when pulling out the bottom insertion arm 11321 of the commutation seat 1132 from the top jack 11313 of the air guide seat 1131, the air guide seat 1131 will not shift, so as to ensure the reliability of the breast pump.

[0087] Refer to the attached Figure 3 and Figure 4 The top of the housing main body 1114 has a positioning wall 11143. The positioning wall 11143 surrounds the bottom of the air guide seat 1131, and the outer wall of the positioning wall 11143 is in contact with the outer wall of the air guide seat 1131. In this way, on the one hand, before assembling the outer housing 1115 to the housing main body 1114, the positioning wall 11143 of the housing main body 1114 pre-positions the air guide seat 1131. When assembling the outer housing 1115 to the housing main body 1114, the positioning wall 11143 of the housing main body 1114 can prevent the air guide seat 1131 from shifting, ensuring that the top boss 11314 of the air guide seat 1131 is inserted into the positioning hole 11151 of the outer housing 1115 and improving the assembly efficiency. On the other hand, when inserting the bottom insertion arm 11321 of the commutation seat 1132 into the top jack 11313 of the air guide seat 1131 or pulling out the bottom insertion arm 11321 of the commutation seat 1132 from the top jack 11313 of the air guide seat 1131, the positioning wall 11143 of the housing main body 1114 can prevent the air guide seat 1131 from shifting.

[0088] Continue to refer to the attached Figures 2 to 4, the outer cover 1115 further includes a housing body 11152 and a retaining cover 11153. The positioning hole 11151 is formed in the retaining cover 11153. The housing body 11152 has a housing passage 111521. The housing body 11152 is fixedly installed on the housing main body 1114. The position of the top boss 11314 of the air guide seat 1131 corresponds to the position of the housing passage 111521 of the housing body 11152. The retaining cover 11153 is fixedly installed in the housing passage 111521 of the housing body 11152. The top boss 11314 of the air guide seat 1131 is inserted into the positioning hole 11151 formed in the retaining cover 11153 of the outer cover 1115. In this way, the housing main body 1114, the air guide seat 1131 and the outer cover 1115 can be conveniently assembled, and the misalignment of the air guide seat 1131 can be avoided.

[0089] It is worth mentioning that the specific manner in which the retaining cover 11153 is fixedly installed in the housing passage 111521 of the housing body 11152 is not limited in the breast pump of the present invention. For example, in the Figures 1 to 7 specific example of the breast pump of the present invention shown in the attached Figures 2 to 4 , multiple hook arms 111531 are respectively provided on opposite sides of the retaining cover 11153. The shape of the retaining cover 11153 matches the shape of the housing passage 111521 of the housing body 11152, and the size of the retaining cover 11153 is slightly larger than the size of the housing passage 111521 of the housing body 11152. These hook arms 111531 of the retaining cover 11153 respectively extend into the housing receiving cavity 1116 of the support housing 111 through the housing passage 111521 of the housing body 11152, and these hook arms 111531 of the retaining cover 11153 hook the edge of the housing body 11152 for forming the housing passage 111521, so as to reliably install the retaining cover 11153 on the housing body 11152 to close the housing passage 111521 of the housing body 11152.

[0090] According to another aspect of the present invention, the present invention further provides an operation method for the self - adsorption breast milk pumping device 10. Referring to the attached Figures 5 to 7 , the operation method includes the following steps:

[0091] (a) Flip the bell - shaped cover body 122 of the self - adsorption cover 12 in the direction of the negative pressure forming unit 11;

[0092] (b) Allow the position of the horn-shaped cover body 122 of the self-adsorbing cover 12 for connecting the assembly ring body 121 to abut against the areola; and

[0093] (c) Restore the horn-shaped cover body 122 so that the horn-shaped cover body 122 wraps a part of the breast to form the negative pressure space 100 between the horn-shaped cover body 122 and the breast, allowing the self-adsorbing milking device 10 to adsorb on the breast.

[0094] After the self-adsorbing milking device 10 adsorbs on the breast, the breast closes the front opening of the horn-shaped cover body 122, and the areola closes the rear opening of the horn-shaped cover body 122. In this way, the self-adsorbing milking device 10 not only allows the negative pressure space 100 to be formed between the horn-shaped cover body 122 and the breast, but also allows the milking cavity 1103 of the negative pressure forming unit 11 to form a closed space. Through the above-mentioned operation method, the self-adsorbing milking device 10 can be reliably adsorbed on the breast without the assistance of a bra, for realizing bare suction.

[0095] Preferably, in the step (b), the inner wall of the small cover body 123 of the self-adsorbing cover 12 is attached to the areola in such a way that the small cover body 123 covers the nipple. In this way, it is beneficial to ensure that the milking cavity 1103 of the negative pressure forming unit 11 forms a closed space, thereby increasing the sealing performance of the negative pressure space 100, so that the self-adsorbing milking device 10 can be reliably adsorbed on the breast.

[0096] Preferably, in the step (b), the contact area between the horn-shaped cover body 122 of the self-adsorbing cover 12 and the upper part of the breast is larger than the contact area between the horn-shaped cover body 122 and the lower part of the breast. In this way, the shape of the horn-shaped cover body 122 better matches the shape of the breast, which is beneficial to increasing the friction between the horn-shaped cover body 122 and the breast, so that the self-adsorbing milking device 10 can be more firmly adsorbed on the breast. More preferably, the self-adsorbing cover 12 is made of silica gel. Since the distance between the front side of the top of the horn-shaped cover body 122 of the self-adsorbing cover 12 and the rear side of the assembly ring body 121 is greater than the distance between the front side of the bottom of the horn-shaped cover body 122 and the rear side of the assembly ring body 121, due to the extensibility of silica gel itself, the horn-shaped cover body 122 can provide a greater wrapping force on the upper part of the breast, so that the self-adsorbing milking device 10 can be more firmly adsorbed on the breast.

[0097] Attached Figures 8A to 10 shows a deformation example of the self-adsorbing milking device 10. Different from the self-adsorbing milking device 10 of the milking machine shown in Attached Figures 1 to 7 shown, in Attached Figures 8A to 10In the specific example of the self-adsorption breast pump device 10 of the present invention, the horn cover 122 of the self-adsorption cover 12 has an exhaust passage 1223, and the self-adsorption cover 12 further includes an exhaust check valve 125, which is arranged on the horn cover 122 for selectively opening and closing the exhaust passage 1223 of the horn cover 122. When the self-adsorption breast pump device 10 is adsorbed on the breast and the negative pressure space 100 is formed between the horn cover 122 and the breast, the exhaust check valve 125 allows the air in the negative pressure space 100 to be discharged through the exhaust passage 1223 of the horn cover 122, so as to ensure that the air pressure in the negative pressure space 100 is lower than the air pressure of the external environment, thereby ensuring that the self-adsorption breast pump device 10 is reliably adsorbed on the breast. Preferably, the exhaust check valve 125 and the horn cover 122 are integrally formed.

[0098] Further, the negative pressure forming unit 11 has a valve cavity 1106 and a communication channel 1107, wherein the valve cavity 1106 is located above the milk suction cavity 1103, and the communication channel 1107 connects the valve cavity 1106 and the milk suction cavity 1103, wherein the end of the exhaust check valve 125 away from the horn cover 122 extends into the valve cavity 1106 of the negative pressure forming unit 11. It can be understood that when the self-adsorption milk suction device 10 is adsorbed on the breast, the negative pressure space 100 is formed between the horn cover 122 and the breast, and the areola closes the rear opening of the horn cover 122 to form a closed space for the milk suction cavity 1103 of the negative pressure forming unit 11, so the negative pressure space 100 and the milk suction cavity 1103 of the negative pressure forming unit 11 are independent of each other. When the host 20 inhales air and the air pressure of the milk suction chamber 1103 of the negative pressure forming unit 11 is reduced, the exhaust check valve 125 opens the exhaust channel 1223 of the speaker cover 122 to allow the air in the negative pressure space 100 to enter the milk suction chamber 1103 of the negative pressure forming unit 11 through the exhaust channel 1223 of the speaker cover 122, thereby preventing the speaker cover 122 from falling off from the breast during the milk suction process, so as to reliably adsorb the self-adsorption milk suction device 10 on the breast. It can be understood that when the host 20 exhausts air and the air pressure of the milk suction chamber 1103 of the negative pressure forming unit 11 is increased, the exhaust check valve 125 closes the exhaust channel 1223 of the speaker cover 122 to prevent the air in the milk suction chamber 1103 of the negative pressure forming unit 11 from entering the negative pressure space 100, thereby ensuring that the self-adsorption milk suction device 10 is reliably adsorbed on the breast.

[0099] In the breast pump of the present utility model, since the valve chamber 1106 of the negative pressure forming unit 11 is located above the milk suction chamber 1103, the valve chamber 1106 and the milk suction chamber 1103 are communicated through the communication channel 1107, and the communication channel 1107 has a small size. Therefore, during the milk suction process, the sucked milk is prevented from entering the valve chamber 1106 from the milk suction chamber 1103 through the communication channel 1107 of the negative pressure forming unit 11.

[0100] Preferably, the gas flow rate at the connection position between the communication channel 1107 of the negative pressure forming unit 11 and the valve chamber 1106 is less than the gas flow rate at the connection position between the communication channel 1107 and the milk suction chamber 1103. In this way, it can not only ensure that the air pressure in the milk suction chamber 1103 of the negative pressure forming unit 11 drops low enough to provide a strong suction force for milk suction, but also avoid a large drop in the air pressure in the valve chamber 1106 of the negative pressure forming unit 11, so that the bell-shaped cover 122 will not be overly deformed, thus ensuring the comfort during milk suction.

[0101] Preferably, the exhaust check valve 125 is arranged at the rear side of the top of the bell-shaped cover 122. In this way, the exhaust check valve 125 and the valve chamber 1106 of the negative pressure forming unit 11 cooperate with each other to guide the installation method of the self-adsorption cover 12, that is, after the self-adsorption cover 12 is installed on the negative pressure forming unit 11, the forward protruding part of the bell-shaped cover 122 can automatically be located at the top, ensuring that the top of the bell-shaped cover 122 protrudes more forward than the bottom.

[0102] With the Figures 1 to 7 specific structure of the negative pressure forming unit 11 of the self-adsorption milk suction device 10 of the breast pump shown in the appendix being different, in the appendix Figures 8A to 10In this specific example of the negative pressure forming unit 11 shown, the negative pressure forming unit 11 includes a milk suction housing 114, a deformable bowl 1121, and a top cover 115. The milk suction housing 114 has a first cavity 1141 with a front opening, a second cavity 1142 with a front opening, a third cavity 1143 with a top opening, a first through hole 1144, and a second through hole 1145. The second cavity 1142 is located above the first cavity 1141. The first through hole 1144 communicates the first cavity 1141 and the third cavity 1143, and the second through hole 1145 communicates the second cavity 1142 and the third cavity 1143. The deformable bowl 1121 is received in the third cavity 1143 of the milk suction housing 114, and the edge of the deformable bowl 1121 abuts against the edge of the third cavity 1143 of the milk suction housing 114. The communication channel 1107 of the negative pressure forming unit 11 is formed between the milk suction housing 114 and the deformable bowl 115. The first cavity 1141 and the second cavity 1142 of the milk suction housing 114 respectively form the milk suction cavity 1103 and the valve cavity 1106 of the negative pressure forming unit 11. The top cover 115 is installed on the milk suction housing 114, and the edge of the top cover 115 and the edge of the third cavity 1143 of the milk suction housing 114 clamp the edge of the deformable bowl 1121 to form the negative pressure cavity 1101 of the negative pressure forming unit 11 between the top cover 116 and the deformable bowl 115, where the trachea 300 can be connected to the top cover 116.

[0103] The size of the first through hole 1144 of the milk suction housing 114 is larger than the size of the second through hole 1145, so that the gas flow rate at the communication position between the communication channel 1107 and the valve cavity 1106 of the negative pressure forming unit 11 is smaller than the gas flow rate at the communication position between the communication channel 1107 and the milk suction cavity 1103.

[0104] Continue to refer to the appendix Figures 8A to 10 The negative pressure forming unit 11 further includes a mounting arm 1123. The mounting arm 1123 extends downward integrally from the milk suction housing 114. The milk discharging channel 1105 of the negative pressure forming unit 11 extends from the inner wall of the milk suction housing 114 to the end of the mounting arm 1123. The milk discharging one-way valve 13 is installed on the mounting arm 1123 to selectively open and close the milk discharging channel 1105 of the negative pressure forming unit 11.

[0105] Appendix Figure 11 Another variant example of the self - adsorbing milk suction device 10 shown, different from the self - adsorbing milk suction device 10 shown in the appendix Figures 8A to 10 shown, is that in the appendix Figure 11In the specific example of the self-adsorption milk sucking device 10 shown, one end of the exhaust one-way valve 125 of the self-adsorption cover 12 facing away from the self-adsorption cover 122 is located outside the negative pressure forming unit 11, that is, when the self-adsorption milk sucking device 10 is adsorbed on the breast and the negative pressure space 100 is formed between the horn cover body 122 and the breast, the exhaust one-way valve 125 allows the air in the negative pressure space 100 to be discharged to the external environment through the exhaust channel 1223 of the horn cover body 122, so as to ensure that the air pressure in the negative pressure space 100 is lower than the air pressure of the external environment, thereby ensuring that the self-adsorption milk sucking device 10 is reliably adsorbed on the breast.

[0106] Attached Figure 12 A modified example of the self-adsorption breast pump device 10 is shown. Figures 1 to 7 The self-adsorption milk suction device 10 of the breast pump shown is different in that Figure 12 In the specific example of the self-adsorption breast pump device 10 of the present invention shown, the trumpet cover body 122 of the self-adsorption cover 12 has the exhaust channel 1223, and the self-adsorption cover 12 includes the exhaust check valve 125, which is arranged on the trumpet cover body 122 for selectively opening and closing the exhaust channel 1223 of the trumpet cover body 122, and the negative pressure forming unit 11 has the valve cavity 1106 and the connecting channel 1107, and the connecting channel 1107 connects the milk suction cavity 1103 and the valve cavity 1106, and the valve cavity 1106 and the connecting channel 1107 are formed in the negative pressure forming part 112. When the self-adsorption cover 12 is installed on the negative pressure forming part 112, the exhaust check valve 125 of the self-adsorption cover 12 extends into the valve cavity 1106 of the negative pressure forming unit 11. When the host 20 inhales air and the air pressure of the milk suction chamber 1103 of the negative pressure forming unit 11 is reduced, the exhaust check valve 125 opens the exhaust channel 1223 of the speaker cover 122 to allow the air in the negative pressure space 100 to enter the milk suction chamber 1103 of the negative pressure forming unit 11 through the exhaust channel 1223 of the speaker cover 122, thereby preventing the speaker cover 122 from falling off from the breast during the milk suction process, so as to reliably adsorb the self-adsorption milk suction device 10 on the breast. It can be understood that when the host 20 exhausts air and the air pressure of the milk suction chamber 1103 of the negative pressure forming unit 11 is increased, the exhaust check valve 125 closes the exhaust channel 1223 of the speaker cover 122 to prevent the air in the milk suction chamber 1103 of the negative pressure forming unit 11 from entering the negative pressure space 100, thereby ensuring that the self-adsorption milk suction device 10 is reliably adsorbed on the breast.

[0107] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The object of the present utility model has been fully and effectively achieved. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the said principles, any deformation or modification can be made to the embodiments of the present utility model.

Claims

1. Self-adsorbing hood, characterized in that, Comprising: An assembly ring body; And A deformable horn cover body, wherein the horn cover body has a rear cover part and a front cover part, the rear cover part connects the front cover part and the assembly ring body, and there is an included angle α between the extending direction of the rear cover part and the central axis of the self - adsorption cover, and there is an included angle β between the extending direction of the front cover part and the central axis of the self - adsorption cover, and the included angles α and β satisfy: α > β.

2. The self - adsorption cover according to claim 1, wherein the included angle β satisfies: 15° ≤ β ≤ 40°.

3. The self - adsorption cover according to claim 1, wherein the distance between the front side of the top of the horn cover body and the rear side of the assembly ring body is greater than the distance between the front side of the bottom of the horn cover body and the rear side of the assembly ring body.

4. The self - adsorption cover according to any one of claims 1 to 3, wherein the horn cover body has an exhaust passage, and the self - adsorption cover includes an exhaust check valve, and the exhaust check valve is arranged on the horn cover body for selectively opening and closing the exhaust passage of the horn cover body.

5. The self - adsorption cover according to claim 4, wherein the exhaust check valve and the horn cover body are integrally formed.

6. The self - adsorption cover according to any one of claims 1 to 3, wherein the self - adsorption cover further includes a small cover body, the small cover body is arranged at the connection position of the horn cover body and the assembly ring body, and at least a part of the small cover body is surrounded by the horn cover body.

7. Self-adsorbing hood, characterized in that, Comprising: An assembly ring body; A deformable horn cover body, wherein the horn cover body extends integrally outward from the assembly ring body, and the horn cover body has an exhaust passage; And An exhaust check valve, wherein the exhaust check valve is arranged on the horn cover body for selectively opening and closing the exhaust passage of the horn cover body.

8. Self-adsorbing milking device, characterized in that, Comprising: A milk discharge check valve; A self - adsorption cover, wherein the self - adsorption cover includes an assembly ring body and a deformable horn cover body extending outward from the assembly ring body; and A negative - pressure forming unit, wherein the negative - pressure forming unit has a negative - pressure cavity, a gas - exchange passage communicating with the negative - pressure cavity, a milk - sucking cavity independent of the negative - pressure cavity, an assembly opening communicating with the milk - sucking cavity and a milk - discharge passage, the spatial size of the negative - pressure cavity is negatively correlated with the spatial size of the milk - sucking cavity, the milk discharge check valve is arranged on the negative - pressure forming unit for selectively opening and closing the milk - discharge passage of the negative - pressure forming unit, and the assembly ring body of the self - adsorption cover is assembled on the negative - pressure forming unit at the position of the assembly opening.

9. The self - adsorption milk - sucking device according to claim 8, wherein the horn cover body has a rear cover part and a front cover part, the rear cover part connects the front cover part and the assembly ring body, and there is an included angle α between the rear cover part and the central axis of the self - adsorption cover, and there is an included angle β between the front cover part and the central axis of the self - adsorption cover, and the included angles α and β satisfy: α > β.

10. The self-adsorbing breast pump device according to claim 8, wherein the self-adsorbing cover further comprises a small cover body, the small cover body is arranged at the connection position between the trumpet cover body and the assembly ring body, and at least a part of the small cover body is surrounded by the trumpet cover body.

11. The self-sucking breast pump device according to claim 8, wherein the rear side of the mounting ring body is higher than the opening of the milk discharge channel of the negative pressure generating unit.

12. The self-adsorbing breast pump device according to any one of claims 8 to 11, wherein the bell housing has an exhaust passage, wherein the self-adsorbing housing comprises an exhaust one-way valve, and the exhaust one-way valve is arranged on the bell housing for selectively opening and closing the exhaust passage of the bell housing. 13 . The self-adsorbing breast pumping device according to claim 12 , wherein an end of the exhaust one-way valve facing away from the horn cover is located outside the negative pressure forming unit.

14. The self-adsorption milk sucking device according to claim 12, wherein the negative pressure forming unit has a valve cavity and a connecting passage, the valve cavity is located above the milk suction cavity, the connecting passage connects the valve cavity and the milk suction cavity, and the end of the exhaust one-way valve facing away from the horn cover body extends into the valve cavity of the negative pressure forming unit.

15. The self-adsorbing breast pump device according to claim 14, wherein a gas flow rate at a communication position between the communication channel and the valve chamber is smaller than a gas flow rate at a communication position between the communication channel and the milk suction chamber.

16. The self-sucking breast pump device according to any one of claims 8 to 11, wherein the distance between the front side of the top of the horn cover and the rear side of the mounting ring is greater than the distance between the front side of the bottom of the horn cover and the rear side of the mounting ring.

17. The self-adsorption breast pumping device according to claim 8, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part, the supporting shell has a shell cavity and a shell opening and a shell notch respectively connected to the shell cavity, the negative pressure forming part comprises a deformable bowl, an annular frame arranged at the opening of the deformable bowl, and a mounting arm extending downward from the frame, the frame is mounted on the supporting shell at the shell opening, the deformable bowl extends to the shell cavity of the supporting shell, and the mounting arm is located at the shell notch of the supporting shell, wherein the negative pressure cavity of the negative pressure forming unit is formed between the supporting shell and the deformable bowl, the gas exchange channel of the negative pressure forming unit is formed in the supporting shell, the milk suction cavity and the assembly opening of the negative pressure forming unit are formed in the frame, the milk discharge channel of the negative pressure forming unit extends from the inner wall of the deformable bowl through the frame to the end of the mounting arm or from the inner wall of the frame to the end of the mounting arm, wherein the milk discharge one-way valve is mounted on the mounting arm.

18. The self - adsorption milk sucking device according to claim 17, wherein the self - adsorption cover further comprises a limiting portion, the limiting portion extends from the peripheral wall of the assembly ring body in a direction substantially perpendicular to the extending direction of the assembly ring body, and there is a gap between the limiting portion and the horn cover body, wherein the limiting portion can abut against the framework of the negative pressure forming portion.

19. The self - adsorption milk sucking device according to claim 18, wherein the support housing comprises a housing main body and an outer housing, and the support housing has a housing receiving cavity. The housing cavity, the housing opening and the housing notch of the support housing are formed in the housing main body. The outer housing is mounted on the housing main body, and the support housing forms the housing receiving cavity between the housing main body and the outer housing. The outer housing has a positioning hole which communicates with the housing receiving cavity of the support housing. The negative pressure forming unit comprises an air passage unit, and the air passage unit comprises a gas guiding seat and a commutation seat. The gas guiding seat has a first air passage extending transversely, a bottom jack, a top jack and a top boss. The bottom jack and the top jack communicate with the first air passage respectively, and the opening of the top jack is formed on the end face of the top boss. The housing main body has a housing insertion arm which extends into the housing receiving cavity of the support housing. The opening of the gas exchange passage of the negative pressure forming unit is formed on the end face of the housing insertion arm of the housing main body. The gas guiding seat is arranged on the top of the housing main body. The housing insertion arm of the housing main body is inserted into the bottom jack of the gas guiding seat. The top boss of the gas guiding seat extends into the positioning hole of the outer housing. The gas guiding seat is received in the housing receiving cavity of the support housing, and the first air passage of the gas guiding seat communicates with the gas exchange passage of the negative pressure forming unit. The commutation seat has a bottom insertion arm, a side insertion arm and a second air passage. One opening of the second air passage is formed on the end face of the bottom insertion arm, and the other opening is formed on the end face of the side insertion arm. The bottom insertion arm of the commutation seat is inserted into the top jack of the gas guiding seat so that the negative pressure cavity of the negative pressure forming unit, the gas exchange passage, the first air passage of the gas guiding seat and the second air passage of the commutation seat are sequentially communicated.

20. Breast pump, characterized in that, Including: Main body; Air pipe; And The self - adsorption milk sucking device according to any one of claims 8 to 19, wherein the air pipe connects the main body and the self - adsorption milk sucking device.

Images