Self-adsorption type breast pump device and breast pump

Abstract

The utility model discloses a self-adsorption type breast pump device and breast pump, wherein the self-adsorption type breast pump device comprises a one-way valve, a self-adsorption cover and a negative pressure forming unit, the negative pressure forming unit is provided with a negative pressure cavity, a gas exchange channel, a breast pump cavity, an assembly opening and a milk discharge channel, the gas exchange channel is communicated with the negative pressure cavity, the assembly opening and the milk discharge channel are respectively communicated with the milk suction cavity, the milk suction cavity and the negative pressure cavity are separated by a deformable part of the negative pressure forming unit, and the self-adsorption cover is mounted at the assembly opening of the negative pressure forming unit and is communicated with the milk discharge channel. Wherein the one-way valve is mounted to the negative pressure forming unit to selectively open and close the milk discharge passage. The self-adsorption cover can be adsorbed on the breast, so that the self-adsorption type breast sucking device can be adsorbed on the breast without any assistance, and the self-adsorption type breast sucking device is used for helping a user to suck milk.

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 self - adsorption type milk suction device and a breast pump. Background Art

[0002] A wearable breast pump is a breast pump that can be placed inside a bra. The bra is used to fix the breast pump on the breast. In this way, during the milk suction process, the mother can free her hands and even move around at will. Therefore, wearable breast pumps have become increasingly popular in recent years. However, existing wearable breast pumps have many defects. For example, firstly, without the assistance of a bra, the wearable breast pump cannot be fixed at the breast position. Secondly, after the wearable breast pump is fixed on the breast by the bra, the wearable breast pump supports the front part of the bra, resulting in the side edges of the bra pressing against the sides and the back of the breast, affecting comfort. Thirdly, the breast cup of the wearable breast pump is integrally attached to the main body, and the angle of the breast cup is always the same as that of the main body. The mother needs to adjust the angle of the main body to change the angle of the breast cup. Due to the weight and angle of the main body, and as the milk suction process progresses, the weight of the milk acts on the main body, causing its weight to further increase and resulting in the main body sliding down. The sliding down of the main body will inevitably cause the angle of the breast cup to change and be misaligned, or even fall off the breast, leading to milk leakage problems. How to fix the breast pump at the breast position without any assistance is the technical problem that the inventors of the present utility model are committed to solving. Summary of the Utility Model

[0003] An object of the present utility model is to provide a self - adsorption type milk suction device and a breast pump, wherein the self - adsorption type milk suction device can be adsorbed on the breast without any assistance.

[0004] An object of the present utility model is to provide a self - adsorption type milk suction device and a breast pump, wherein during the milk suction process, the self - adsorption cup of the self - adsorption type milk suction device can be reliably adsorbed on the breast, so that the self - adsorption type milk suction device can be adsorbed on the breast without any assistance.

[0005] An object of the present utility model is to provide a self - adsorption type milk suction device and a breast pump, wherein the center of gravity of the self - adsorption type milk suction device is close to the self - adsorption cup. Thus, when the self - adsorption cup is adsorbed on the breast, the center of gravity of the self - adsorption type milk suction device is closer to the body. In this way, the self - adsorption type milk suction device can reduce the requirement for the adsorption force on the self - adsorption cup, so as to avoid the self - adsorption type milk suction device causing compression on the breast during the milk suction process, thereby ensuring breast health.

[0006] One object of the present utility model is to provide a self - adsorbing milk suction device and a breast pump. After the horn cover body of the self - adsorbing cover fits onto the breast and adsorbs the self - adsorbing milk suction device to the breast, when the assembly ring body of the self - adsorbing cover changes with the change in the position of the negative - pressure forming unit, the shoulder ring body of the self - adsorbing cover can deform to prevent the horn cover body from changing with the change in the position of the negative - pressure forming unit. Thus, during the milk suction process, the self - adsorbing cover can be reliably adsorbed to the breast.

[0007] One object of the present utility model is to provide a self - adsorbing milk suction device and a breast pump, wherein the self - adsorbing cover can be disassembled. In this way, on the one hand, the self - adsorbing cover can be cleaned separately to improve the hygiene of the self - adsorbing milk suction device; on the other hand, the mother can select a suitable self - adsorbing cover according to needs to meet personalized requirements.

[0008] One object of the present utility model is to provide a self - adsorbing milk suction device and a breast pump. When the self - adsorbing cover is installed on the negative - pressure forming unit, the self - adsorbing cover can be limited in position so that there is a gap between the shoulder ring body and the negative - pressure forming unit. Thus, when the assembly ring body changes with the change in the position of the negative - pressure forming unit, the shoulder ring body can deform. In addition, by limiting the position of the self - adsorbing cover, it can be avoided that the assembly ring body blocks the milk discharge channel of the negative - pressure forming unit for smooth milk discharge.

[0009] One object of the present utility model is to provide a self - adsorbing milk suction device and a breast pump, wherein the self - adsorbing milk suction device has a smaller size. In this way, after the self - adsorbing milk suction device is adsorbed to the breast, even if a bra needs to be worn, the self - adsorbing milk suction device will not overly stretch the bra outwards. At the same time, the pressure exerted by the bra on the breast through the self - adsorbing milk suction device will also be reduced, thus improving the comfort of the mother when sucking milk through the self - adsorbing milk suction device.

[0010] According to one aspect of the present utility model, the present utility model provides a self - adsorbing milk suction device, which includes:

[0011] A one - way valve;

[0012] A self - adsorbing cover; and

[0013] A negative pressure forming unit, wherein the negative pressure forming unit has a negative pressure chamber, a gas exchange channel, a milk suction chamber, an assembly opening and a milk discharge channel, the gas exchange channel is connected to the negative pressure chamber, the assembly opening and the milk discharge channel are respectively connected to the milk suction chamber, the milk suction chamber and the negative pressure chamber are separated by a deformable component of the negative pressure forming unit, wherein the self-adsorption cover is installed at the assembly opening of the negative pressure forming unit, wherein the one-way valve is provided at the negative pressure forming unit to selectively open and close the milk discharge channel.

[0014] According to one embodiment of the utility model, the self-adsorption cover has a deformable horn cover body. From a side view, there is a movable space between the horn cover body and the negative pressure forming unit to allow the deformed horn cover body to flip toward the negative pressure forming unit.

[0015] According to one embodiment of the utility model, the self-adsorption cover has a deformable trumpet cover body and a resistance part, the trumpet cover body is used to wrap a part of the breast, and the resistance part is used to resist the areola part, wherein the distance D1 between the resistance part and the outer edge of the trumpet cover body is greater than the distance D2 between the part of the negative pressure forming unit used to define the assembly opening and the outer edge of the trumpet cover body.

[0016] According to one embodiment of the utility model, the self-adsorption cover has a resistance portion, which is used to resist the areola area, wherein the distance D1 between the resistance portion and the outer edge of the horn cover body is greater than the distance D2 between the portion of the negative pressure forming unit used to define the assembly opening and the outer edge of the horn cover body.

[0017] According to one embodiment of the utility model, the self-adsorption cover includes a shoulder ring body, an assembly ring body and a deformable horn cover body, the assembly ring body extends integrally to one side from the inner edge of the shoulder ring body, and the horn cover body extends integrally to the opposite direction from the outer edge of the shoulder ring body.

[0018] According to one embodiment of the utility model, the self-adsorption cover further has a shoulder ring body and an assembly ring body, the assembly ring body extends integrally to one side from the inner edge of the shoulder ring body, and the speaker cover body extends integrally to the opposite direction from the outer edge of the shoulder ring body.

[0019] According to one embodiment of the utility model, the self-adsorption cover has a resistance portion, which is located at the connection between the assembly ring body and the shoulder ring body and is used to resist the areola. The distance D1 between the resistance portion and the outer edge of the horn cover body is greater than the distance D2 between the portion of the negative pressure forming unit used to define the assembly opening and the outer edge of the horn cover body.

[0020] According to an embodiment of the present utility model, the self - adsorption cover includes a shape - stabilizing portion, and the shape - stabilizing portion is disposed at the connection position of the shoulder ring body and the horn cover body for maintaining the shape of the horn cover body.

[0021] According to an embodiment of the present utility model, the horn cover body is flexible, and the shoulder ring body and the assembly ring body are rigid.

[0022] According to an embodiment of the present utility model, the self - adsorption cover includes a shape - stabilizing portion, and the stabilizing portion is disposed outside the assembly ring body and the shoulder ring body for maintaining the shape of the horn cover body.

[0023] According to an embodiment of the present utility model, the self - adsorption cover extends through the assembly opening of the negative pressure forming unit to the outside of the milk discharging channel to form a step.

[0024] According to an embodiment of the present utility model, the shoulder ring body extends outward and forward from the assembly ring body in a direction substantially perpendicular to the assembly ring body, wherein the horn ring body extends outward and forward from the shoulder ring body in a direction substantially parallel to the assembly ring body.

[0025] According to an embodiment of the present utility model, the self - adsorption cover includes a limiting portion, the limiting portion extends integrally from the peripheral wall of the assembly ring body in a direction perpendicular to the extending direction of the assembly ring body, and there is a gap between the limiting portion and the shoulder ring body.

[0026] According to an embodiment of the present utility model, the distance d1 between the outer side of the limiting portion and the central axis of the self - adsorption cover is greater than the distance d2 between the outer side of the shoulder ring body and the central axis of the self - adsorption cover.

[0027] According to an embodiment of the present utility model, the hardness range of the horn cover body of the self - adsorption cover is 10A to 50A.

[0028] According to an embodiment of the present utility model, the dimension range of the projection length L of the horn cover body of the self - adsorption cover in the horizontal plane is 12mm to 30mm.

[0029] According to an embodiment of the present utility model, the surface roughness range of the inner wall of the horn cover body is Ra0.016um - Ra0.063um.

[0030] According to an embodiment of the present utility model, the range of the angle α between the extending direction of the inner wall of the horn cover body of the self - adsorption cover and the central axis of the self - adsorption cover is 15° to 40°.

[0031] According to an embodiment of the present utility model, there is an included angle α between the extending direction of the inner wall of the horn-shaped cover body of the self-adsorbing cover and the central axis of the self-adsorbing cover, and there is an included angle β between the extending direction of the inner wall of the shoulder ring body and the central axis of the self-adsorbing cover, and the included angle β is greater than the included angle α.

[0032] 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 negative pressure forming portion is installed in the support housing. The negative pressure chamber is formed between the support housing and the negative pressure forming portion. The gas exchange channel is provided in the support housing. The milk suction chamber, the assembly opening, and the milk discharge channel are provided in the negative pressure forming portion. The self-adsorbing cover and the one-way valve are respectively installed in the negative pressure forming portion.

[0033] According to an embodiment of the present utility model, the support housing includes a housing main body and a horn-shaped body integrally extending outward from one end of the housing main body. The housing main body has an installation cavity and an installation opening communicating with the installation cavity. The negative pressure forming portion includes a deformable portion and a skeleton portion. The deformable portion has a combination end and a deformable end corresponding to the combination end. The milk suction chamber, the assembly opening, and the milk discharge channel are formed in the deformable portion. The skeleton portion is combined with the combination end of the deformable portion. The skeleton portion of the negative pressure forming portion is installed in the installation opening of the housing main body. The deformable portion extends into the installation cavity through the installation opening. The negative pressure chamber is formed between the deformable portion and the housing main body. The deformable portion is a deformable component of the negative pressure forming unit for separating the negative pressure chamber and the milk suction chamber.

[0034] According to another aspect of the present utility model, the present utility model further provides a breast pump, which includes:

[0035] A breast pump main body;

[0036] At least one air tube; and

[0037] At least one self - adsorption type milk suction device, wherein the self - adsorption type milk suction device further comprises a one - way valve, a self - adsorption cover and a negative pressure forming unit. The negative pressure forming unit has a negative pressure chamber, a gas exchange channel, a milk suction chamber, an assembly opening and a milk discharging channel. The gas exchange channel communicates with the negative pressure chamber. The assembly opening and the milk discharging channel respectively communicate with the milk suction chamber. The milk suction chamber and the negative pressure chamber are separated by a deformable component of the negative pressure forming unit. The self - adsorption cover is installed at the assembly opening of the negative pressure forming unit. The one - way valve is installed on the negative pressure forming unit to selectively open and close the milk discharging channel. The air pipe communicates with the milk suction machine main body and the gas exchange channel of the negative pressure forming unit. Description of the Drawings

[0038] Figure 1 Fig. is a three - dimensional schematic diagram of a breast pump according to a preferred embodiment of the present utility model.

[0039] Figure 2 Fig. is a schematic diagram of the usage state of the breast pump according to the above - mentioned preferred embodiment of the present utility model.

[0040] Figure 3 Fig. is a three - dimensional schematic diagram of a self - adsorption type milk suction device of the breast pump according to the above - mentioned preferred embodiment of the present utility model from one perspective.

[0041] Figure 4 Fig. is a three - dimensional schematic diagram of the self - adsorption type milk suction device of the breast pump according to the above - mentioned preferred embodiment of the present utility model from another perspective.

[0042] Figure 5 Fig. is an exploded schematic diagram of the self - adsorption type milk suction device of the breast pump according to the above - mentioned preferred embodiment of the present utility model from one perspective.

[0043] Figure 6 Fig. is an exploded schematic diagram of the self - adsorption type milk suction device of the breast pump according to the above - mentioned preferred embodiment of the present utility model from another perspective.

[0044] Figure 7 Fig. is a cross - sectional schematic diagram of the self - adsorption type milk suction device of the breast pump according to the above - mentioned preferred embodiment of the present utility model from a three - dimensional perspective.

[0045] Figure 8 Fig. is a cross - sectional schematic diagram of the self - adsorption type milk suction device of the breast pump according to the above - mentioned preferred embodiment of the present utility model from a planar perspective.

[0046] Figure 9 is Figure 8 a partially enlarged schematic diagram of

[0047] Figure 10 It is a cross-sectional schematic view of another planar perspective of the self-adsorbing milking device of the milking machine according to the above-mentioned preferred embodiment of the present utility model.

[0048] Figure 11 It is Figure 10 A schematic enlarged view of a partial position.

[0049] Figure 12 It is a schematic view of the assembly process of a cross-sectional perspective of the self-adsorbing milking device of the milking machine according to the above-mentioned preferred embodiment of the present utility model.

[0050] Figure 13 It is a schematic view of the assembly process of another cross-sectional perspective of the self-adsorbing milking device of the milking machine according to the above-mentioned preferred embodiment of the present utility model.

[0051] Figure 14 It is a cross-sectional schematic view of the first variant example of the self-adsorbing milking device of the milking machine according to the above-mentioned preferred embodiment of the present utility model.

[0052] Figure 15 It is a cross-sectional schematic view of the second variant example of the self-adsorbing milking device of the milking machine according to the above-mentioned preferred embodiment of the present utility model.

[0053] Figure 16 It is a cross-sectional schematic view of the third variant example of the self-adsorbing milking device of the milking machine according to the above-mentioned preferred embodiment of the present utility model. Detailed implementation manners

[0054] Before elaborating in detail any embodiment of the present utility model, it should be understood that in its application, the present utility model is not limited to the details of the construction and arrangement of the components described in the following description or illustrated in the following drawings. The present utility model is capable of having other embodiments and of being practiced or carried out in various ways. Additionally, it should be understood that the wording and terminology used herein are for the purpose of description and should not be regarded as restrictive. As used herein, "comprising" or "having" and their variants are intended to cover the listed items herein 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.

[0055] Moreover, in the disclosure of the present utility model, 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 utility model 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 utility model. Secondly, 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.

[0056] Referring to the attached drawings of the specification of the present utility model Figure 1 and Figure 2 , a breast pump according to a preferred embodiment of the present utility model will be disclosed and described hereinafter. The breast pump includes at least one self - adsorbing milk - sucking device 100, a breast pump main body 200, and at least one air tube 300. Opposite ends of the air tube 300 are respectively connected to the self - adsorbing milk - sucking device 100 and the breast pump main body 200. Wherein the self - adsorbing milk - sucking device 100 can be adsorbed on the breast. When the breast pump main body 200 operates, the self - adsorbing milk - sucking device 100 can help the mother suck milk. In the breast pump of the present utility model, the breast pump allows the self - adsorbing milk - sucking device 100 to self - adsorb on the breast, that is, without any assistance, for example, without wearing a bra, the self - adsorbing milk - sucking device 100 can be adsorbed on the breast. It can be understood that after the self - adsorbing milk - sucking device 100 is self - adsorbed on the breast, the mother can also wear a bra.

[0057] Attached Figures 3 to 13 shows a specific example of the self - adsorbing milk - sucking device 100. The self - adsorbing milk - sucking device 100 includes a negative - pressure forming unit 10, a self - adsorbing cover 20 assembled to the negative - pressure forming unit 10, and a one - way valve 30 assembled to the negative - pressure forming unit 10.

[0058] Specifically, the negative pressure forming unit 10 includes a support housing 11, a negative pressure forming portion 12, and has a negative pressure chamber 13. The negative pressure forming portion 12 is installed in the support housing 11, and the negative pressure chamber 13 is formed between the support housing 11 and the negative pressure forming portion 12. The support housing 11 has a gas exchange channel 111 that communicates with the negative pressure chamber 13. The negative pressure forming portion 12 has a milk suction chamber 121, an assembly opening 122, and a milk discharge channel 123 that are respectively communicated with the milk suction chamber 121. The negative pressure chamber 13 and the milk suction chamber 121 are independent of each other, that is, the negative pressure chamber 13 and the milk suction chamber 121 are separated. The self - adsorption cover 20 is assembled to the assembly opening 122 of the negative pressure forming portion 12. The one - way valve 30 is disposed in the negative pressure forming portion 12, and the one - way valve 30 selectively opens and closes the milk discharge channel 123. The self - adsorption cover 20 can adsorb on the breast, so that the self - adsorption type milk suction device 100 is adsorbed on the breast.

[0059] In the attached Figures 3 to 13 In this specific example of the self - adsorption type milk suction device 100 shown, the self - adsorption cover 20 has a contact portion 201 for contacting the areola area.

[0060] The gas exchange channel 111 of the support housing 11 can be connected to the breast pump main unit 200 through the trachea 300. When the mother attaches the self-adsorbing breast pumping device 100 to the breast by attaching the self-adsorbing cover 20 to the breast, the areola area abuts against the abutting portion 201 of the self-adsorbing cover 20, causing the self-adsorbing cover 20 to cover the nipple. In this way, the areola area and the one-way valve 30 can form a closed space for the milk suction cavity 121 of the negative pressure forming portion 12. When the breast pump main unit 200 operates, the air in the negative pressure cavity 13 of the negative pressure forming unit 10 can be discharged through the gas exchange channel 111 of the support housing 11 and the trachea 300 to reduce the pressure in the negative pressure cavity 13. At this time, the one-way valve 30 closes the milk discharge channel 123 of the negative pressure forming portion 12, and the space of the milk suction cavity 121 of the negative pressure forming portion 12 increases, resulting in a decrease in the pressure of the milk suction cavity 121. At this time, the milk can be sucked out. Subsequently, the air in the external environment can enter the negative pressure cavity 13 of the negative pressure forming unit 10 through the trachea 300 and the gas exchange channel 111 of the support housing 11, and the pressure in the negative pressure cavity 13 increases. At this time, the one-way valve 30 opens the milk discharge channel 123 of the negative pressure forming portion 12 to discharge milk, and the space of the milk suction cavity 121 of the negative pressure forming portion 12 decreases, resulting in an increase in the pressure of the milk suction cavity 121. By alternately reducing and increasing the pressure in the negative pressure cavity 13 of the negative pressure forming unit 10, the breast pump can achieve milk suction. That is to say, the negative pressure cavity 13 and the milk suction cavity 121 are separated by the deformable part of the negative pressure forming unit 10, so that the pressure in the milk suction cavity 121 changes with the change in the pressure in the negative pressure cavity 131.

[0061] In the Figures 3 to 13 In an example of the self-adsorbing breast pumping device 100 shown in the appended

[0062] Referring to the appendedFigure 8 , the assembly ring body 22 of the self - adsorption cover 20 is assembled to the assembly opening 122 of the negative - pressure forming part 12, and there is an activity space 1000 between the horn cover body 23 and the negative - pressure forming unit 10 to allow the deformed horn cover body 23 to turn towards the negative - pressure forming unit 10. When the mother makes the self - adsorption milk - sucking device 100 adsorb on the breast by adsorbing on the breast through the self - adsorption cover 20, the opening of the horn cover body 23 is closed by the breast. Thus: on the one hand, before the mother adsorbs the self - adsorption milk - sucking device 100 on the breast, the horn cover body 23 can be turned towards the negative - pressure forming unit 10 first. After the nipple aligns with the milk - sucking cavity 121 of the negative - pressure forming part 12 and the abutting part 201 of the self - adsorption cover 20 abuts against the areola area, then the horn cover body 23 is restored, so that the horn cover body 23 closely fits the breast. In this way, the breast can close the opening of the horn cover body 23 to enable the self - adsorption cover 20 to adsorb on the breast, and the abutting part 201 of the self - adsorption cover 20 remains in contact with the areola area. Thus, during the milk - sucking process, a negative - pressure environment is formed in the milk - sucking cavity 121 of the negative - pressure forming part 12 and a part of the internal space of the self - adsorption cover 20. On the other hand, after the mother makes the self - adsorption milk - sucking device 100 adsorb on the breast by adsorbing on the breast through the self - adsorption cover 20, the self - adsorption cover 20 isolates the negative - pressure forming unit 10 from the breast, avoiding the direct contact between the negative - pressure forming unit 10 and the breast. The flexible self - adsorption cover 20 can improve the comfort of the mother when using the milk - sucking device. On the other hand, when the assembly ring body 22 of the self - adsorption cover 20 changes with the change of the position of the negative - pressure forming unit 10, the shoulder ring body 21 of the self - adsorption cover 20 can be deformed to prevent the horn cover body 23 from changing with the change of the position of the negative - pressure forming unit 10. In this way, during the milk - sucking process, the self - adsorption cover 20 can always reliably fit the mother's breast, avoiding the self - adsorption milk - sucking device 100 falling off the breast and avoiding milk leakage.

[0063] In the self - adsorption milk - sucking device 100 of the present utility model, referring to the attached Figure 8, the distance D1 between the abutting portion 201 of the self - adsorption cover 20 and the outer edge of the horn cover body 23 is greater than the distance D2 between the portion of the negative - pressure forming portion 12 that defines the assembly opening 122 and the outer edge of the horn cover body 23, so that the abutting portion 201 of the self - adsorption cover 20 is retracted. In this way, the center of gravity of the self - adsorption milking device 100 can be closer to the self - adsorption cover 20. Thus, when the self - adsorption cover 20 is adsorbed to the breast, the center of gravity of the self - adsorption milking device 100 is closer to the body. In this way, the component force of the gravity of the self - adsorption milking device 100 acting on the breast can be reduced, so that the self - adsorption milking device 100 can reduce the requirement for the adsorption force on the self - adsorption cover 20, to avoid the self - adsorption milking device 100 falling off the breast and to avoid the self - adsorption milking device 100 causing compression to the breast during milking, thereby ensuring breast health.

[0064] In the self - adsorption milking device 100 of the present utility model, referring to the attached Figure 8 , the shoulder ring body 21 extends outward and forward from the assembly ring body 22 in a direction substantially perpendicular to the assembly ring body 22, and the horn ring body 23 extends outward and forward from the shoulder ring body 21 in a direction substantially parallel to the assembly ring body 22. In this way, in the case where the distance between the outer edge of the horn cover body 23 and the outer edge of the assembly ring body 22 is small, the outer edge of the horn cover body 23 can form a larger opening, and the self - adsorption cover 20 can form a smaller opening at the position of the abutting portion 201, so that the horn cover body 23 can be adsorbed to the breast and the abutting portion 201 can abut against the areola position. Thus, when the self - adsorption cover 20 is adsorbed to the breast, the center of gravity of the self - adsorption milking device 100 is closer to the body, and the component force of the gravity of the self - adsorption milking device 100 acting on the breast can be reduced, so that the self - adsorption milking device 100 can reduce the requirement for the adsorption force on the self - adsorption cover 20, to avoid the self - adsorption milking device 100 falling off the breast and to avoid the self - adsorption milking device 100 causing compression to the breast during milking, thereby ensuring breast health.

[0065] In addition, in the self - adsorption milk suction device 100 of the present utility model, the negative pressure forming unit 10 of the self - adsorption milk suction device 100 does not need to be provided with any electronic components. Instead, the gas exchange channel 111 of the support housing 11 of the negative pressure forming unit 10 is connected to the milk suction device main body 200 through a trachea 300. In this way, the self - adsorption milk suction device 100 can have a lighter weight and a smaller size. Not only can the center of gravity of the self - adsorption milk suction device 100 be closer to the self - adsorption cover 20 so that the self - adsorption milk suction device 100 can be reliably adsorbed on the breast, but also the lighter weight can reduce the burden on the breast.

[0066] Continue to refer to the appendix Figure 8 As shown, the inner wall of the horn cover body 23 of the self - adsorption cover 20 is an inclined surface, and there is an included angle α between its extending direction and the central axis of the self - adsorption cover 20. The angle of this included angle α cannot be too small or too large. If the angle of the included angle α is too small, the opening size of the horn cover body 23 will be too small, which will cause the horn cover body 23 to be unable to cover the breast and the contact portion 23 of the self - adsorption cover 20 to be unable to contact the areola area. Even if the breast is forced into the horn cover body 23, the horn cover body 23 will provide a large clamping force and act on the breast, resulting in breast discomfort and even damage to the breast. If the angle of the included angle α is too large, the opening size of the horn cover body 23 will be too large, which will cause the horn cover body 23 to be unable to fit the breast and the self - adsorption cover 20 to be unable to adsorb the breast. In the self - adsorption milk suction device 100 of the present utility model, the minimum value of the included angle α is preferably not less than 15°, and the maximum value is preferably not greater than 40°. Therefore, the suitable range of the included angle α is 15° to 40°.

[0067] In addition, continue to refer to the appendix Figure 8, the inner wall of the shoulder ring body 21 of the self - adsorption cover 20 is an inclined surface, and there is an included angle β between its extending direction and the central axis of the self - adsorption cover 20. The angle of this included angle β is greater than the angle of the included angle α. In this way, when the outer edge of the horn cover body 23 and the outer edge of the assembly ring body 22 have a small distance, the outer edge of the horn cover body 23 can form a larger opening, and the self - adsorption cover 20 can form a smaller opening at the position of the abutting portion 201. Thus, the horn cover body 23 can adsorb on the breast and the abutting portion 201 can abut against the areola position. When the self - adsorption cover 20 adsorbs on the breast, the center of gravity of the self - adsorption milking device 100 is closer to the body, and the component force of the gravity of the self - adsorption milking device 100 acting on the breast can be reduced. Therefore, the self - adsorption milking device 100 can reduce the requirement for the adsorption force on the self - adsorption cover 20, so as to avoid the self - adsorption milking device 100 falling off the breast and avoid the self - adsorption milking device 100 causing compression to the breast during milking, thus ensuring breast health.

[0068] Continue to refer to the attached Figure 8 , the size of the projection length L of the horn cover body 23 of the self - adsorption cover 20 in the horizontal plane cannot be too large or too small. If the size of the projection length L is too small, the contact area between the horn cover body 23 and the breast will be too small, which will cause the self - adsorption cover 20 to be unable to adsorb reliably on the breast. If the size of the projection length L is too large, the weight of the self - adsorption milking device 100 will increase, causing a burden on the breast. In the self - adsorption milking device 100 of the present utility model, the minimum value of the projection length L is preferably not less than 12 mm, and the maximum value is preferably not greater than 30 mm. Therefore, the suitable range of the projection length L is from 12 mm to 30 mm.

[0069] In addition, the hardness range of the horn cover body 23 of the self - adsorption cover 20 is 10A to 50A to improve comfort while ensuring that the horn cover body 23 is flexible. The surface roughness range of the inner wall of the horn cover body 23 of the self - adsorption cover 20 is Ra0.016um - Ra0.063um. In this way, when the horn cover body 23 adsorbs on the breast, there is a reasonable frictional force between the horn cover body 23 and the breast, so that the self - adsorption cover 20 can stably adsorb on the breast.

[0070] In the attached Figures 3 to 13In an example of the self - adsorption type milk suction device 100 shown, the assembly ring body 22 of the self - adsorption cover 20 is detachably assembled to the negative pressure forming part 12, which enables the self - adsorption cover 20 to be conveniently cleaned, thereby improving the hygiene of the breast pump. At the same time, the mother can select a suitable self - adsorption cover 20 according to her own needs to meet personalized requirements. For example, self - adsorption covers 20 of different materials, different sizes, and different shapes can all be selected and assembled to the same negative pressure forming part 12.

[0071] In the attached Figures 3 to 13 In this specific example of the self - adsorption type milk suction device 100 shown, the outer diameter dimension of the assembly ring body 22 of the self - adsorption cover 20 is the same as the inner diameter dimension of the negative pressure forming part 12. Thus, based on the frictional force generated between the outer wall of the assembly ring body 22 and the inner wall of the negative pressure forming part 12, the assembly ring body 22 of the self - adsorption cover 20 can be reliably assembled to the negative pressure forming part 12.

[0072] Refer to the attached Figure 7 、 Figure 8 and Figure 12 and Figures 5 to 9 , the assembly ring body 22 of the self - adsorption cover 20 extends through the assembly opening 122 of the negative pressure forming part 12 to the outside of the milk discharge channel 123 of the negative pressure forming part 12 to form a step. In this way, the sucked milk can be blocked by the assembly ring body 22, preventing the milk from flowing to the position of the bell - shaped cover body 23, and further preventing the milk from leaking from the fitting position between the bell - shaped cover body 23 and the breast. In other words, by allowing the assembly ring body 22 of the self - adsorption cover 20 to extend through the assembly opening 122 of the negative pressure forming part 12 to the outside of the milk discharge channel 123 of the negative pressure forming part 12, the sucked milk is only allowed to be discharged through the milk discharge channel 123 of the negative pressure forming part 12.

[0073] Refer to the attached Figures 5 to 9, the self - adsorption cover 20 further includes a limiting portion 24. The limiting portion 24 extends integrally from the peripheral wall of the assembly ring body 22 in a direction perpendicular to the extension direction of the assembly ring body 22, and there is a gap between the limiting portion 24 and the shoulder ring body 21. In this way, when the assembly ring body 22 of the self - adsorption cover 20 is assembled to the assembly opening 122 of the negative - pressure forming portion 12, the limiting portion 24 restricts the assembly depth of the assembly ring body 22 by abutting against the negative - pressure forming portion 12. Thus: on the one hand, the limiting portion 24 can ensure that there is a gap between the shoulder ring body 21 and the negative - pressure forming portion 12, so that when the assembly ring body 22 changes with the change of the position of the negative - pressure forming unit 10, the shoulder ring body 21 can deform; on the other hand, the limiting portion 24 can ensure that the assembly ring body 22 extends through the assembly opening 122 of the negative - pressure forming portion 12 to the outside of the milk - discharging channel 123 of the negative - pressure forming portion 12, avoiding the assembly ring body 22 covering the milk - discharging channel 123 of the negative - pressure forming portion 12.

[0074] In the attached Figures 3 to 13 In this specific example of the self - adsorption milk - sucking device 100 shown, the limiting portion 24 is annular, and the distance d1 between the outer side of the limiting portion 24 and the central axis of the self - adsorption cover 20 is greater than the distance d2 between the outer side of the shoulder ring body 21 and the central axis of the self - adsorption cover 20. Thus, from the top - view perspective (the angle perpendicular to the central axis of the self - adsorption cover 20) of the self - adsorption cover 20, the limiting portion 24 covers the shoulder ring body 21, making the shoulder ring body 21 visually invisible.

[0075] Refer to the attached Figures 6 to 8 , the negative - pressure forming portion 12 has an embedding groove 124. The embedding groove 124 surrounds the outside of the assembly opening 122. The limiting portion 24 of the self - adsorption cover 20 has an embedding protrusion 241. The shape and size of the embedding protrusion 241 match the shape and size of the embedding groove 124 of the negative - pressure forming portion 12. Wherein the embedding protrusion 241 of the limiting portion 24 is embedded in the embedding groove 124 of the negative - pressure forming portion 12. Based on the friction force generated between the inner wall of the negative - pressure forming portion 12 for forming the embedding groove 124 and the outer wall of the embedding protrusion 241 of the limiting portion 24, the assembly ring body 22 of the self - adsorption cover 20 can be reliably assembled to the negative - pressure forming portion 12.

[0076] In the attached Figures 3 to 13In this specific example of the self - adsorbing milk pumping device 100 shown, the mounting groove 124 of the negative pressure forming part 12 is annular and surrounds the periphery of the assembly opening 122. Correspondingly, the mounting protrusion 241 of the limiting part 24 of the self - adsorbing cover 20 is annular and surrounds the periphery of the assembly ring body 22. In this way, when installing the self - adsorbing cover 20 on the negative pressure forming part 12, the installation direction of the self - adsorbing cover 20 does not need to be concerned about.

[0077] Continue to refer to the appendix Figures 3 to 13 As shown, the support housing 11 includes a housing main body 112 and a horn body 113 integrally extending outward from one end of the housing main body 112. The housing main body 112 has an installation cavity 1121 and an installation opening 1122 communicating with the installation cavity 1121. The gas exchange channel 111 is provided in the housing main body 112, and the gas exchange channel 111 communicates with the installation cavity 1121 of the housing main body 112. The negative pressure forming part 12 includes a deformation part 125 and a skeleton part 126. The milk suction cavity 121, the assembly opening 122 and the milk discharge channel 123 of the negative pressure forming part 12 are formed in the deformation part 125. The deformation part 125 has a combined end 1251 and a deformation end 1252 corresponding to the combined end 1251. The skeleton part 126 of the negative pressure forming part 12 is mounted on the installation opening 1122 of the housing main body 112 of the support housing 11. The deformation part 125 extends through the installation opening 1122 of the housing main body 112 into the installation cavity 1121, and the negative pressure cavity 13 is formed between the deformation part 125 and the housing main body 112.

[0078] When the breast pump main unit 200 is operating, the air in the negative pressure chamber 13 of the negative pressure forming unit 10 is discharged through the gas exchange channel 111 of the support housing 11 and the trachea 300 to reduce the pressure in the negative pressure chamber 13. At this time, the one-way valve 30 closes the milk discharging channel 123 of the negative pressure forming portion 12, and the deformation end 1252 of the deformation portion 125 deforms towards one end of the housing main body 112 away from the horn body 113, so as to increase the space of the milk suction chamber 121 of the negative pressure forming portion 12, resulting in a decrease in the pressure of the milk suction chamber 121. As the air in the external environment enters the negative pressure chamber 13 of the negative pressure forming unit 10 through the trachea 300 and the gas exchange channel 111 of the support housing 11, the pressure in the negative pressure chamber 13 increases. At this time, the one-way valve 30 opens the milk discharging channel 123 of the negative pressure forming portion 12 to discharge milk, and the deformation end 1252 of the deformation portion 125 deforms towards one end of the housing main body 112 away from the horn body 113, so as to reduce the space of the milk suction chamber 121 of the negative pressure forming portion 12, resulting in an increase in the pressure of the milk suction chamber 121.

[0079] It should be noted that the manner in which the skeleton portion 126 is coupled to the coupling end 1251 of the deformation portion 125 is not limited in the self - adsorbing breast milk suction device 100 of the present utility model. For example, in a specific example of the self - adsorbing breast milk suction device 100 of the present utility model, the deformation portion 125 and the skeleton portion 126 are separately manufactured, and glue is used to bond the skeleton portion 126 to the coupling end 1251 of the deformation portion 125, so that the skeleton portion 126 is coupled to the coupling end 1251 of the deformation portion 125. In another specific example of the self - adsorbing breast milk suction device 100 of the present utility model, first, the deformation portion 125 is manufactured, and secondly, the skeleton portion 126 is integrally coupled to the deformation portion 125 through a two - shot molding process, so that the skeleton portion 126 is coupled to the coupling end 1251 of the deformation portion 125. In another specific example of the self - adsorbing breast milk suction device 100 of the present utility model, first, the skeleton portion 126 is manufactured, and secondly, the coupling end 1251 of the deformation portion 125 is integrally coupled to the skeleton portion 126 through a two - shot molding process, so that the skeleton portion 126 is coupled to the coupling end 1251 of the deformation portion 125.

[0080] In the appendix Figures 3 to 13In this specific example of the self - adsorption milk suction device 100 of the present utility model shown, the skeleton part 126 of the negative pressure forming part 12 surrounds the joint end 1251 of the deformation part 125. In this way, the skeleton part 126 enables the negative pressure forming part 12 to be reliably installed on the support housing 11.

[0081] Refer to the attached Figures 5 to 8 At the bottom of the skeleton part 126 of the negative pressure forming part 12, there is an internal installation arm 1261 and an arm body channel 1262. The arm body channel 1262 penetrates through the internal installation arm 1261, and the arm body channel 1262 communicates with the milk discharging channel 123 of the negative pressure forming part 12. The one - way valve 30 is installed on the internal installation arm 1261 of the skeleton part 126 to dispose the one - way valve 30 in the negative pressure forming part 12.

[0082] Preferably, the one - way valve 30 is a duck - bill valve. With the change of the pressure in the milk suction cavity 121 of the negative pressure forming part 12, the one - way valve 30 can switch between an open state and a closed state. When the deformation end 1252 of the deformation part 125 deforms towards the end of the housing body 112 away from the horn body 113, resulting in a decrease in the pressure in the milk suction cavity 121, the one - way valve 30 closes the milk discharging channel 123 of the negative pressure forming part 12. When the deformation end 1252 of the deformation part 125 deforms away from the end of the housing body 112 away from the horn body 113, resulting in an increase in the pressure in the milk suction cavity 121, the one - way valve 30 opens the milk discharging channel 123 of the negative pressure forming part 12.

[0083] In the attached Figures 3 to 13 In an example of the self - adsorption milk suction device 100 of the present utility model shown, the negative pressure forming part 12 is detachably installed on the support housing 11. In this way, the negative pressure forming part 12 can be cleaned after being detached from the support housing 11 to improve the hygiene of the self - adsorption milk suction device 100.

[0084] Continue to refer to the attached Figures 10 to 13, the self - adsorption milk sucking device 100 further includes at least one ball - head plunger 40. The ball - head plunger 40 includes a cylinder part 41, a compression spring 42 and a ball - head part 43. Wherein the cylinder part 41 has a cylinder cavity 411 and an orifice 412 communicating with the cylinder cavity 411. The compression spring 42 is compressibly arranged in the cylinder cavity 411 of the cylinder part 41. The ball - head part 43 is movably arranged at the orifice 412 of the cylinder part 41, and the bottom of the ball - head part 43 abuts against the compression spring 42, and the top of the ball - head part 43 protrudes from the cylinder part 41. The cylinder part 41 of the ball - head plunger 40 is fixedly installed on the housing body 112 of the support housing 11. The ball - head part 43 protrudes from the installation cavity 1121 of the housing body 112. The outer wall of the skeleton part 126 of the negative - pressure forming part 12 has at least one holding groove 1263. When installing the negative - pressure forming part 12 on the support housing 11, the outer wall of the skeleton part 126 pushes the ball - head part 43 towards the direction close to the bottom of the cylinder part 41, so that the compression spring 42 is squeezed by the ball - head part 43 to generate deformation and accumulate elastic potential energy. When the negative - pressure forming part 12 is installed in place, the compression spring 42 pushes the ball - head part 43 towards the direction away from the bottom of the cylinder part 41, so that the ball - head part 43 protrudes into the holding groove 1263 of the skeleton part 126. Based on the frictional force generated between the peripheral wall of the skeleton part 126 for forming the holding groove 1263 and the outer surface of the ball - head part 43, the ball - head plunger 40 enables the negative - pressure forming part 12 to be reliably installed on the support housing 11. Correspondingly, when disassembling the negative - pressure forming part 12 from the support housing 11, as long as the pulling force for pulling the negative - pressure forming part 12 outwards is greater than the frictional force generated between the peripheral wall of the skeleton part 126 for forming the holding groove 1263 and the outer surface of the ball - head part 43, the ball - head part 43 can be disengaged from the holding groove 1263 of the skeleton part 126.

[0085] It is worth mentioning that the way in which the cylinder part 41 of the ball - head plunger 40 is fixedly installed on the housing body 112 of the support housing 11 is not limited in the self - adsorption milk sucking device 100 of the present utility model. For example, in this specific example of the self - adsorption milk sucking device 100 of the present utility model, referring to the attached Figure 10 and Figure 11 , the housing body 112 of the support housing 11 has at least one installation hole 1123. The cylinder part 41 of the ball - head plunger 40 is installed in the installation hole 1123 of the housing body 112 to fixedly install the cylinder part 41 on the housing body 112.

[0086] In a specific example of the self - adsorption milk sucking device 100 of the present utility model, the shell body 112 of the support shell 11 has two mounting holes 1123. The two mounting holes 1123 are located on opposite sides of the mounting cavity 1121. The number of the ball - head plungers 40 is two. The columnar part 41 of each ball - head plunger 40 is fixedly installed in each mounting hole 1123 of the shell body 112. In this way, one ball - head plunger 40 is arranged on each of the opposite sides of the mounting cavity 1121 of the shell body 112. Correspondingly, one holding groove 1263 is respectively provided on each of the opposite sides of the skeleton part 126 of the negative - pressure forming part 12. When the negative - pressure forming part 12 is installed on the shell body 112 of the support shell 11, the ball - head parts 43 of the two ball - head plungers 40 are respectively held in the two holding grooves 1263 of the skeleton part 126. In this way, the negative - pressure forming part 12 can be reliably installed on the mounting opening 1122 of the shell body 112. In this way, the skeleton part 126 and the shell body 112 can squeeze a part of the deformation part 125, so that this part of the deformation part 125 organizes a gap to be generated between the skeleton part 126 and the shell body 112 by generating deformation, ensuring the sealing of the negative - pressure cavity 13.

[0087] In the attached Figures 3 to 13 In an example of the self - adsorption milk sucking device 100 of the present utility model shown in the attachment, the self - adsorption milk sucking device 100 includes an air - duct unit 50. The air - duct unit 50 includes a gas - guiding seat 51 and a commutation seat 52. The gas - guiding seat 51 has a first air - duct 511 extending horizontally, a bottom socket 512 and a top socket 513 respectively communicating with the first air - duct 511. The top of the shell body 112 of the support shell 11 has a shell - body insertion arm 1124. The opening of the gas - exchange channel 111 is formed on the end face of the shell - body insertion arm 1124. The gas - guiding seat 51 is arranged on the top of the shell body 112 in such a way that the shell - body insertion arm 1124 is inserted into the bottom socket 512. The commutation seat 52 has a bottom insertion arm 521, a side - part insertion arm 522 and a second air - duct 523. One opening of the second air - duct 523 is formed on the end face of the bottom insertion arm 521, and the other opening is formed on the end face of the side - part insertion arm 522. The bottom insertion arm 521 of the commutation seat 52 is inserted into the top socket 513 of the gas - guiding seat 51, so that the negative - pressure cavity 13 of the negative - pressure forming unit 10, the first air - duct 511 of the gas - guiding seat 51 and the second air - duct 523 of the commutation seat 52 are communicated in sequence.

[0088] In the attached Figures 3 to 13In this example of the self - adsorption breast milk pumping device 100 shown, by arranging the air guiding seat 51 and the reversing seat 52 at the top of the housing body 112 of the support housing 11, the part of the self - adsorption breast milk pumping device 100 for connecting the air pipe 300 (i.e., the side insertion arm 522 of the reversing seat 52) can be arranged at a reasonable position, avoiding this part occupying too much space. In other words, the arrangement of the air guiding seat 51 and the reversing seat 52 of the air passage unit 50 can achieve the miniaturization of the self - adsorption breast milk pumping device 100. In this way, when the mother adsorbs the self - adsorption breast milk pumping device 100 on the breast and needs to wear a bra, the self - adsorption breast milk pumping device 100 will not overly stretch the bra outwards. At the same time, the pressure exerted by the bra on the breast through the self - adsorption breast milk pumping device 100 will also be reduced, thus improving the comfort of the mother when pumping breast milk through the self - adsorption breast milk pumping device 100.

[0089] In the attachment Figures 3 to 13 In this example of the self - adsorption breast milk pumping device 100 shown, the bottom insertion arm 521 of the reversing seat 52 is detachably inserted into the top jack 513 of the air guiding seat 51. In this way, the mother can select the orientation of the side insertion arm 522 of the reversing seat 52 according to needs. For example, the mother can allow the bottom insertion arm 521 of the reversing seat 52 to be inserted into the top jack 513 of the air guiding seat 51 with the side insertion arm 522 of the reversing seat 52 facing left according to needs, or can also allow the bottom insertion arm 521 of the reversing seat 52 to be inserted into the top jack 513 of the air guiding seat 51 with the side insertion arm 522 of the reversing seat 52 facing right according to needs. By this means, the mother does not need to distinguish between the two self - adsorption breast milk pumping devices 100 during the process of assembling the breast pump.

[0090] In the attachment Figures 3 to 13In this example of the self - adsorption milking device 100 shown, the negative pressure forming unit 10 further includes an outer housing 14 having a receiving cavity 15. The outer housing 14 has a positioning hole 141 and is fixedly installed on the outer edge of the horn body 113 of the support housing 11 to form the receiving cavity 15 between the support housing 11 and the outer housing 14. The positioning hole 141 of the outer housing 14 communicates with the receiving cavity 15. The air guide seat 51 has a top boss 514, and the opening of the top jack 513 is formed on the end face of the top boss 514. The air guide seat 51 is received in the receiving cavity 15 of the negative pressure forming unit 10, and the top boss 514 of the air guide seat 51 extends into the positioning hole 141 of the outer housing 14. It can be understood that since the housing insertion arm 1124 of the housing body 112 of the support housing 11 is inserted into the bottom jack 512 of the air guide seat 51 and the top boss 514 of the air guide seat 51 extends into the positioning hole 141 of the outer housing 14, the air guide seat 51 is stably received in the receiving cavity 15 of the negative pressure forming unit 10. Whether the bottom insertion arm 521 of the reversing seat 52 is inserted into the top jack 513 of the air guide seat 51 or the bottom insertion arm 521 of the reversing seat 52 is pulled out from the top jack 513 of the air guide seat 51, the air guide seat 51 will not shift.

[0091] Reference appendix Figure 7 and Figure 8 , the top of the housing body 112 of the support housing 11 has a positioning wall 1125. The positioning wall 1125 surrounds the bottom of the air guide seat 51, and the inner wall of the positioning wall 1125 fits against the outer wall of the air guide seat 51. In this way, on the one hand, before assembling the outer housing 14 to the support housing 11, the positioning wall 1125 of the housing body 112 can pre - position the air guide seat 51, so that during the process of assembling the outer housing 14 to the support housing, the positioning wall 1125 of the housing body 112 can prevent the air guide seat 51 from being misaligned and improve the assembly efficiency. On the other hand, when the bottom insertion arm 521 of the reversing seat 52 is inserted into the top jack 513 of the air guide seat 51 or the bottom insertion arm 521 of the reversing seat 52 is pulled out from the top jack 513 of the air guide seat 51, the positioning wall 1125 of the housing body 112 can prevent the air guide seat 51 from shifting.

[0092] Continue to refer to appendix Figures 5 to 8, the outer cover 14 includes a housing body 142 and a retaining cover 143, the positioning hole 141 is formed in the retaining cover 143, wherein the housing body 142 has a housing passage 1421, the housing body 142 is fixedly installed on the outer edge of the horn body 113 of the support housing 11, the position of the top boss 514 of the air guide seat 51 corresponds to the position of the housing passage 1421 of the housing body 142, wherein the retaining cover 143 is fixedly installed in the housing passage 1421 of the housing body 142 in such a way that the top boss 514 of the air guide seat 51 is inserted into the positioning hole 141 of the outer cover 14. In this way, the support housing 11, the air guide seat 51 and the outer cover 14 can be conveniently installed, and the misalignment of the air guide seat 51 can be avoided.

[0093] It is worth mentioning that the way in which the housing body 142 is fixedly installed on the horn body 113 of the support housing 11 is not limited in the self - adsorption milk sucking device 100 of the present utility model. For example, in this specific example of the self - adsorption milk sucking device 100 of the present utility model, referring to the attached Figure 5 , the rear side of the horn body 113 of the support housing 11 has a plurality of clamping arms 1131, the clamping arms 1131 have clamping holes 11311, the inner wall of the housing body 142 has a plurality of clamping protrusions 1422, these clamping arms 1131 of the horn body 113 extend into the interior of the housing body 142, and these clamping protrusions 1422 of the housing body 142 are respectively snapped into these clamping holes 11311 of the clamping arms 1131, so that the housing body 142 is fixedly installed on the horn body 113 of the support housing 11. Optionally, in other specific examples of the self - adsorption milk sucking device 100 of the present utility model, the clamping arms 1131 can be arranged on the housing body 142, the clamping protrusions 1422 are arranged on the horn body 113, so that these clamping arms 1131 of the housing body 142 extend into the interior of the horn body 113, and these clamping protrusions 1422 of the horn body 113 are respectively snapped into the clamping holes 11311 of these clamping arms 1131 of the housing body 142, so that the housing body 142 is fixedly installed on the horn body 113 of the support housing 11.

[0094] It is worth mentioning that the way in which the retaining cover 143 is fixedly installed in the housing passage 1421 of the housing body 142 is not limited in the self - adsorption milk sucking device 100 of the present utility model. For example, in this specific example of the self - adsorption milk sucking device 100 of the present utility model, referring to the attached Figures 5 to 7, on opposite sides of the anti - detachment cover 143, there are multiple hook arms 1431 respectively. The shape of the anti - detachment cover 143 matches the shape of the housing channel 1421 of the housing body 142, and the size of the anti - detachment cover 143 is slightly larger than the size of the housing channel 1421 of the housing body 142. These hook arms 1431 of the anti - detachment cover 143 respectively extend from the outside to the inside of the housing body 142 through the housing channel 1421 of the housing body 142 to fixedly install the anti - detachment cover 143 in the housing channel 1421 of the housing body 142, and the anti - detachment cover 143 seals the housing channel 1421 of the housing body 142.

[0095] In the example of the self - adsorption milk suction device 100 shown in the attached Figures 3 to 13 In this example of the self - adsorption milk suction device 100 shown, at the bottom of the housing main body 112 of the support housing 11, there is an installation notch 1126. At the bottom of the skeleton part 126 of the negative pressure forming part 12, there is an external installation arm 1264. The external installation arm 1264 surrounds the internal installation arm 1261, and the external installation arm 1264 can be held in the installation notch 1126 of the housing main body 112. Wherein the self - adsorption milk suction device 100 further includes a milk bottle 60, and the milk bottle 60 is installed on the external installation arm 1264 of the skeleton part 126. Thus, on the one hand, the sucked milk can be collected into the milk bottle 60. On the other hand, above the part of the housing main body 112 for forming the installation notch 1126, there is the skeleton part 126, and below there is the milk bottle 60. In this way, the skeleton part 126 and the milk bottle 60 clamp this part on the opposite sides of the part of the housing main body 112 for forming the installation notch 1126 to further ensure that the negative pressure forming part 12 is reliably and stably installed on the support housing 11.

[0096] Refer to the attached Figure 5 and Figure 6 , on the external installation arm 1264 of the skeleton part 126 of the negative pressure forming part 12, there is at least one clamping groove 12641 extending in the circumferential direction and at least one guiding groove 12642 extending in the height direction and communicating with one end of the clamping groove 12641. At the bottle mouth of the milk bottle 60, there is at least one clamping protrusion 61. The clamping protrusion 61 of the milk bottle 60 can slide into the clamping groove 12641 through the guiding groove 12642 of the external installation arm 1264 of the skeleton part 126 to install the milk bottle 60 on the external installation arm 1264 of the skeleton part 126.

[0097] The attached Figure 14 shows a deformation example of the self - adsorption milk suction device 100 of the present invention. Compared with the attachedFigures 3 to 13 Shown in the self - adsorbing milking device 100 is different in that in the attachment Figure 14 In this specific example of the self - adsorbing milking device 100 shown, the shoulder ring body 21 and the assembly ring body 22 of the self - adsorption cover 20 are rigid, and the bell cover body 23 is flexible. In this way, on the one hand, the shoulder ring body 21 can maintain the shape of the bell cover body 23 and prevent the bell cover body 23 from deforming. On the other hand, when the self - adsorbing milking device 100 moves downward due to its own gravity, the shoulder ring body 21 can slightly hold the bell cover body 23, providing an inclined upward supporting force for the negative - pressure forming unit 10, so that the self - adsorbing milking device 100 can stably adsorb on the breast. On the other hand, the assembly ring body 22 and the shoulder ring body 21 can directly conduct the vibration of the negative - pressure forming unit 10 to the root of the breast, which is beneficial to sucking out the hind milk, thereby improving the milking effect.

[0098] Attachment Figure 15 Shows a variant example of the self - adsorbing milking device 100 of the present utility model. Different from the self - adsorbing milking device 100 shown in the attachment Figure 14 Shown in the self - adsorbing milking device 100 is different in that in the attachment Figure 15 In this specific example of the self - adsorbing milking device 100 shown, the shoulder ring body 21, the assembly ring body 22 and the bell ring body 23 of the self - adsorption cover 20 are integrally flexible. At the same time, the self - adsorption cover 20 further includes a shape - stabilizing part 25, which is arranged outside the assembly ring body 22 and the shoulder ring body 21 and is used to maintain the shape of the bell cover body 23 and prevent the bell cover body 23 from deforming. At the same time, the setting of the shape - stabilizing part 25 is beneficial to stably adsorb the self - adsorbing milking device 100 on the breast and directly conduct the vibration to the root of the breast, which is beneficial to sucking out the hind milk.

[0099] Attachment Figure 16 Shows a variant example of the self - adsorbing milking device 100 of the present utility model. Different from the self - adsorbing milking device 100 shown in the attachment Figures 3 to 13 Shown in the self - adsorbing milking device 100 is different in that in the attachment Figure 16 In this specific example of the self - adsorbing milking device 100 shown, the shape - stabilizing part 25 is arranged at the connection position between the shoulder ring body 21 and the bell cover body 23 and is used to maintain the shape of the bell cover body 23 and prevent the bell cover body 23 from deforming.

[0100] Preferably, the shape - stabilizing part 25 is annular and is wrapped inside the self - adsorption cover 20. For example, insert injection molding process can be used to manufacture the self - adsorption cover 20 so that the stabilizing part 25 is wrapped inside the self - adsorption cover 20.

[0101] 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, and without departing from the said principles, any variations or modifications can be made to the embodiments of the present utility model.

Claims

1. Self-adsorbing milk suction device, characterized in that, include: a one-way valve; a self-adsorbing cover; and A negative pressure forming unit, wherein the negative pressure forming unit has a negative pressure chamber, a gas exchange channel, a milk suction chamber, an assembly opening and a milk discharge channel, the gas exchange channel is connected to the negative pressure chamber, the assembly opening and the milk discharge channel are respectively connected to the milk suction chamber, the milk suction chamber and the negative pressure chamber are separated by a deformable component of the negative pressure forming unit, wherein the self-adsorption cover is installed at the assembly opening of the negative pressure forming unit, wherein the one-way valve is provided at the negative pressure forming unit to selectively open and close the milk discharge channel.

2. The self-adsorption breast pump device according to claim 1, wherein the self-adsorption cover has a deformable trumpet cover body, and from a side view, there is a movable space between the trumpet cover body and the negative pressure forming unit to allow the deformed trumpet cover body to flip toward the negative pressure forming unit.

3. The self-adsorbing breast pump device according to claim 1, wherein the self-adsorbing cover has a deformable trumpet cover body and a resistance part, the trumpet cover body is used to wrap a part of the breast, and the resistance part is used to resist the areola part, wherein the distance D1 between the resistance part and the outer edge of the trumpet cover body is greater than the distance D2 between the part of the negative pressure forming unit used to define the assembly opening and the outer edge of the trumpet cover body.

4. The self-adsorbing breast pump device according to claim 2, wherein the self-adsorbing cover has a contact portion, the contact portion is used to contact the areola area, wherein the distance D1 between the contact portion and the outer edge of the horn cover body is greater than the distance D2 between the portion of the negative pressure forming unit used to define the assembly opening and the outer edge of the horn cover body.

5. The self-adsorbing breast pump device according to claim 1, wherein the self-adsorbing cover comprises a shoulder ring body, a mounting ring body and a deformable horn cover body, the mounting ring body integrally extends to one side from the inner edge of the shoulder ring body, and the horn cover body integrally extends to the opposite direction from the outer edge of the shoulder ring body.

6. The self-adsorbing breast pump device according to claim 2, wherein the self-adsorbing cover further comprises a shoulder ring body and an assembly ring body, the assembly ring body integrally extends to one side from the inner edge of the shoulder ring body, and the horn cover body integrally extends to the opposite direction from the outer edge of the shoulder ring body.

7. The self-adsorbing breast pump according to claim 6, wherein the self-adsorbing cover has a contact portion, the contact portion is located at the connection between the assembly ring body and the shoulder ring body, and is used to contact the areola, and the distance D1 between the contact portion and the outer edge of the horn cover body is greater than the distance D2 between the portion of the negative pressure forming unit used to define the assembly opening and the outer edge of the horn cover body.

8. The self-adsorbing breast pump according to claim 5, wherein the self-adsorbing cover comprises a shape-stabilizing portion, and the shape-stabilizing portion is arranged at the connection position between the shoulder ring body and the horn cover body to maintain the shape of the horn cover body.

9. The self - adsorption milk sucking device according to claim 5, wherein the bell cover body is flexible, and the shoulder ring body and the fitting ring body are rigid.

10. The self - adsorption milk sucking device according to claim 5, wherein the self - adsorption cover includes a shape - stabilizing part, and the stabilizing part is arranged outside the fitting ring body and the shoulder ring body for maintaining the shape of the bell cover body.

11. The self - adsorption milk sucking device according to any one of claims 1 to 7, wherein the self - adsorption cover extends outside the milk discharging channel through the fitting opening of the negative pressure forming unit to form a step.

12. The self - adsorption milk sucking device according to claim 5, 6 or 7, wherein the shoulder ring body extends outward and forward from the fitting ring body in a direction substantially perpendicular to the fitting ring body, and the bell ring body extends outward and forward from the shoulder ring body in a direction substantially horizontal to the fitting ring body.

13. The self - adsorption milk sucking device according to claim 5, 6 or 7, wherein the self - adsorption cover includes a limiting part, the limiting part extends integrally from the peripheral wall of the fitting ring body in a direction perpendicular to the extending direction of the fitting ring body, and there is a gap between the limiting part and the shoulder ring body.

14. The self - adsorption milk sucking device according to claim 13, wherein the distance d1 between the outer side of the limiting part and the central axis of the self - adsorption cover is greater than the distance d2 between the outer side of the shoulder ring body and the central axis of the self - adsorption cover.

15. The self - adsorption milk sucking device according to any one of claims 2 to 7, wherein the hardness range of the bell cover body of the self - adsorption cover is 10A to 50A.

16. The self - adsorption milk sucking device according to any one of claims 2 to 7, wherein the dimension range of the projection length L of the bell cover body of the self - adsorption cover on the horizontal plane is 12mm to 30mm.

17. The self - adsorption milk sucking device according to any one of claims 2 to 7, wherein the surface roughness range of the inner wall of the bell cover body is Ra0.016um - Ra0.063um.

18. The self - adsorption milk sucking device according to any one of claims 2 to 7, wherein the range of the angle α between the extending direction of the inner wall of the bell cover body of the self - adsorption cover and the central axis of the self - adsorption cover is 15° to 40°.

19. The self - adsorption milk sucking device according to any one of claims 2 to 7, wherein there is an angle α between the extending direction of the inner wall of the bell cover body of the self - adsorption cover and the central axis of the self - adsorption cover, and there is an angle β between the extending direction of the inner wall of the shoulder ring body and the central axis of the self - adsorption cover, and the angle β is greater than the angle α.

20. The self-adsorbing milk sucking device according to any one of claims 1 to 7, wherein the negative pressure forming unit comprises a support housing and a negative pressure forming portion, the negative pressure forming portion is installed in the support housing, the negative pressure chamber is formed between the support housing and the negative pressure forming portion, the gas exchange channel is provided in the support housing, the milk sucking chamber, the assembly opening and the milk discharging channel are provided in the negative pressure forming portion, and wherein the self-adsorbing cover and the one-way valve are respectively installed in the negative pressure forming portion.

21. The self-adsorbing milk sucking device according to claim 20, wherein the support housing comprises a housing main body and a horn body integrally extending outward from one end of the housing main body, the housing main body has an installation cavity and an installation opening communicating with the installation cavity, wherein the negative pressure forming portion comprises a deformable portion and a skeleton portion, the deformable portion has a bonding end and a deformable end corresponding to the bonding end, the milk sucking chamber, the assembly opening and the milk discharging channel are formed in the deformable portion, the skeleton portion is bonded to the bonding end of the deformable portion, wherein the skeleton portion of the negative pressure forming portion is installed in the installation opening of the housing main body, the deformable portion extends into the installation cavity through the installation opening, the negative pressure chamber is formed between the deformable portion and the housing main body, and wherein the deformable portion is a deformable component of the negative pressure forming unit for separating the negative pressure chamber and the milk sucking chamber.

22. Breast pump, characterized in that, Comprising: A breast pump main body; At least one air pipe; And The self-adsorbing milk sucking device according to any one of claims 1 to 21, wherein the air pipe connects the breast pump main body and the gas exchange channel of the negative pressure forming unit.

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