Breast pump, and breast pumping device and flared cover thereof

Abstract

A breast pump, and a breast pumping device (100) and a flared cover (20) thereof. The breast pumping device (100) comprises a device body (10) and the flared cover (20) arranged on the device body (10), wherein the device body (10) has a breast pumping chamber (101), a milk storage chamber (102), and a milk discharge channel (103) capable of connecting the breast pumping chamber (101) to the milk storage chamber (102); and the flared cover (20) is arranged on the device body (10), and the flared cover (20) comprises an external first extension section (21) and a flippable external second extension section (22), the external second extension section (22) extending outward from the side of the external first extension section (21) facing away from the device body (101), and the external first extension section (21) and the external second extension section (22) having different extension trends.

Description

Breast pump, breast pump device and horn cover thereof Technical Field

[0001] The present invention relates to a breast pump, in particular to a breast pump, a milk suction device and a speaker cover thereof. Background Art

[0002] Existing wearable breast pumps are integrated. For example, Chinese utility model patent No. CN221181191U discloses a wearable breast pump comprising a bell housing, a milk storage bowl, and a negative pressure generating assembly. The milk storage bowl is provided with a connection port on a side wall opposite to its bowl opening. The bell housing has a bell opening edge that is detachably and airtightly connected to the bowl opening of the milk storage bowl. The back of the bell housing is airtightly connected to the inner wall of the connection port. A butterfly-shaped diaphragm is fixedly provided between the inner wall of the connection port and the back of the bell housing. The outer wall of the bell housing is provided with a liquid outlet, and the nipple receiving channel within the bell housing is opposite to the butterfly diaphragm and communicates with the liquid outlet. The negative pressure generating assembly is detachably mounted outside the milk storage bowl, and the suction end of the negative pressure generating assembly is airtightly connected to the inner wall of the connection port. A negative pressure chamber is formed between the butterfly diaphragm and the suction end of the negative pressure generating assembly. The negative pressure generated within the negative pressure chamber by the negative pressure generating assembly drives the butterfly diaphragm to deform, thereby transmitting the negative pressure to the nipple receiving channel to draw milk through the liquid outlet and store it in the milk storage bowl. In conventional wearable breast pumps, although the negative pressure generating assembly is detachably mounted outside the milk storage bowl, during milk extraction, the prior art wearable breast pump requires that the negative pressure generating assembly be mounted outside the milk storage bowl. Only in this manner can the negative pressure generating assembly generate negative pressure within the negative pressure chamber to drive the butterfly diaphragm to deform. The wearable breast pump of the prior art has many defects. First, the horn cover can only ensure the sealing of the milk storage bowl, and the wearable breast pump cannot be directly fixed on the breast. Instead, the wearable breast pump needs to be attached to the outside of the breast with the help of a bra. In other words, the user cannot use the wearable breast pump to express milk without the assistance of a bra. Second, since the negative pressure generating component needs to be installed outside the milk storage bowl during the milk expression process, the wearable breast pump is heavy and large in size, which easily puts a heavy burden on the breast. In addition, during the milk expression process, the heavy weight easily causes the wearable breast pump to slide down relative to the breast, resulting in the wearable breast pump being misplaced relative to the breast. Once the misplacement problem occurs, it is not only easy to cause milk leakage but also easy to cause breast damage. Summary of the Invention

[0003] One object of the present invention is to provide a breast pump, a milk suction device and a horn cover thereof, wherein the milk suction device can be worn by the user, that is, the milk suction device can be worn without the assistance of a bra to achieve "naked suction".

[0004] One object of the present invention is to provide a breast pump, a milk pumping device and a bell shell thereof, wherein the bell shell of the milk pumping device can "grasp" the breast so that the milk pumping device can be worn.

[0005] One object of the present invention is to provide a breast pump, a milk suction device and a speaker cover thereof, wherein the milk suction chamber formed between the speaker cover and the device body of the milk suction device is a negative pressure environment, and the gripping force provided by the speaker cover enables the milk suction device to be reliably worn by the user.

[0006] One object of the present invention is to provide a breast pump, a milk suction device and a horn cover thereof, wherein the center of gravity of the milk suction device is closer to the body. In this way, the milk suction device can reduce the gripping force requirement of the horn cover. A smaller gripping force allows the user to wear the milk suction device to avoid compression of the breasts during milk suction, thereby promoting breast health.

[0007] One object of the present invention is to provide a breast pump, a milk suction device, and a horn cover thereof, wherein the milk suction device does not need to be provided with any electronic components, but is connected to the breast pump main unit via an air tube. In this way, the milk suction device can have a lighter weight and a smaller size, which not only brings the center of gravity of the milk suction device closer to the body and further reduces the gripping force requirement of the horn cover, but also the lighter weight further reduces the burden on the breast.

[0008] One object of the present invention is to provide a breast pump, a milk suction device and a bell cover thereof, wherein a negative pressure space can be formed between the bell cover and the breast, so that the bell cover can provide not only a gripping force but also an adsorption force, so that the milk suction device can be worn reliably.

[0009] According to one aspect of the present invention, the present invention provides a breast pump device comprising:

[0010] A device body, wherein the device body comprises a milk suction cavity, a milk storage cavity, and a milk discharge passage capable of connecting the milk suction cavity and the milk storage cavity; and

[0011] A speaker cover, wherein the speaker cover is arranged on the device body, and the speaker cover includes an external first extension section and a flippable external second extension section, the external second extension section extends outward from the side of the external first extension section away from the device body, and the external first extension section and the external second extension section have different extension tendencies.

[0012] According to one embodiment of the present invention, the inner wall of the external first extension section and the inner wall of the external second extension section are both inclined surfaces, and the angle α formed between the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the external second extension section and the central axis of the horn cover.

[0013] According to one embodiment of the present invention, the inner wall of the external first extension section and the inner wall of the external second extension section are both concave arc surfaces, and the angle α formed between the line between the opposite sides of the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the line between the opposite sides of the inner wall of the external second extension section and the central axis of the horn cover.

[0014] According to one embodiment of the present invention, the inner wall of the external first extension section is a sloped surface, the inner wall of the external second extension section is a concave arc surface, and the angle α formed between the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the line between the opposite sides of the inner wall of the external second extension section and the central axis of the horn cover.

[0015] According to one embodiment of the present invention, the inner wall of the external first extension section is a concave arc surface, the inner wall of the external second extension section is a sloped surface, and the angle α formed between the line between the opposite sides of the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the external second extension section and the central axis of the horn cover.

[0016] According to one embodiment of the present invention, the outer second extension section and the outer first extension section are made of the same material.

[0017] According to one embodiment of the present invention, the outer second extension section and the outer first extension section are made of different materials.

[0018] According to one embodiment of the present invention, there is a gap between the outer first extension section and the device body.

[0019] According to one embodiment of the present invention, the speaker cover includes an internal extension section, which extends outward from a side of the external first extension section adjacent to the device body, wherein the internal extension section is detachably mounted on the device body, so that when the internal extension section is mounted on the device body, the speaker cover is set on the device body.

[0020] According to one embodiment of the present invention, the horn cover includes a resistance portion, which is formed at a connection position between the external first extension section and the internal extension section and is used for resisting the areola area.

[0021] According to one embodiment of the present invention, the horn cover includes a resistance portion, which is installed on the inner extension section and is used to resist the areola area.

[0022] According to one embodiment of the present invention, at least a portion of the interference portion of the speaker cover is surrounded by the device body.

[0023] According to one embodiment of the present invention, the device body includes a negative pressure forming unit, a one-way valve and a feeding bottle, the negative pressure forming unit has a negative pressure chamber and a gas exchange channel connected to the negative pressure chamber, the milk suction chamber and the milk discharge channel are formed in the negative pressure forming unit, the air pressure state of the negative pressure chamber is positively correlated with the air pressure state of the milk suction chamber, the milk holding chamber is formed in the feeding bottle, the one-way valve and the feeding bottle are both installed on the negative pressure forming unit, and the feeding bottle covers the one-way valve, and the one-way valve is used to control the connection state of the milk discharge channel of the device body.

[0024] According to one embodiment of the present invention, the negative pressure forming unit includes a supporting shell and a negative pressure forming part, the negative pressure forming part is installed on the supporting shell, the negative pressure chamber is formed between the supporting shell and the negative pressure forming part, the gas exchange channel is provided in the supporting shell, the milk suction chamber and the milk discharge channel are provided in the negative pressure forming part, the one-way valve and the milk bottle are respectively installed in the negative pressure forming part, wherein at least a portion of the negative pressure forming part is deformable so that the air pressure state of the negative pressure chamber is positively correlated with the air pressure state of the milk suction chamber.

[0025] According to one embodiment of the present invention, the support shell includes a shell body and a trumpet body integrally extending outward from one end of the shell body, the shell body has a mounting cavity and a mounting opening connected to the mounting cavity, wherein the negative pressure forming part includes a deformation part and a skeleton part, the milk suction cavity and the milk discharge channel are formed in the deformation part, and the skeleton part is combined with the combining end of the deformation part, wherein the skeleton part of the negative pressure forming part is installed in the mounting opening of the shell body, the deformation part extends to the mounting cavity through the mounting opening, and the negative pressure cavity is formed between the deformation part and the shell body, so that the deformation part makes the air pressure state of the negative pressure cavity positively correlated with the air pressure state of the milk suction cavity through deformation.

[0026] According to another aspect of the present invention, the present invention further provides a breast pump, comprising a breast pump main body, a milk suction device, and an air tube connecting the breast pump main body and the milk suction device, wherein the milk suction device comprises:

[0027] A device body, wherein the device body comprises a milk suction cavity, a milk storage cavity, and a milk discharge passage capable of connecting the milk suction cavity and the milk storage cavity; and

[0028] A speaker cover, wherein the speaker cover is arranged on the device body, and the speaker cover includes an external first extension section and a flippable external second extension section, the external second extension section extends outward from the side of the external first extension section away from the device body, and the external first extension section and the external second extension section have different extension tendencies.

[0029] According to another aspect of the present invention, the present invention further provides a speaker cover, comprising:

[0030] Internal extension;

[0031] an outer first extension; and

[0032] The invention relates to a reversible outer second extension section, wherein the inner extension section and the outer second extension section extend outward from opposite sides of the outer first extension section respectively, and the outer first extension section and the outer second extension section have different extension tendencies.

[0033] According to one embodiment of the present invention, the inner wall of the external first extension section and the inner wall of the external second extension section are both inclined surfaces, and the angle α formed between the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the external second extension section and the central axis of the horn cover; or, the inner wall of the external first extension section and the inner wall of the external second extension section are both concave arc surfaces, and the angle α formed between the line connecting the opposite sides of the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the line connecting the opposite sides of the inner wall of the external second extension section and the central axis of the horn cover. ; Or, the inner wall of the external first extension section is a sloped surface, the inner wall of the external second extension section is a concave arc surface, and the angle α formed between the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the line between the opposite sides of the inner wall of the external second extension section and the central axis of the horn cover; Or, the inner wall of the external first extension section is a concave arc surface, the inner wall of the external second extension section is a sloped surface, and the angle α formed between the line between the opposite sides of the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the external second extension section and the central axis of the horn cover.

[0034] According to one embodiment of the present invention, the speaker cover is made of a silicone material in one piece.

[0035] According to one embodiment of the present invention, the horn cover includes a resistance portion, which is formed at a connection position between the external first extension section and the internal extension section or is installed on the internal extension section for resisting the areola area.

[0036] According to another aspect of the present invention, the present invention further provides a method for wearing a breast pump device, wherein the method comprises the following steps:

[0037] (a) turning the outer second extension of the speaker cover toward the device body; and

[0038] (b) after a portion of the breast is surrounded by the outer first extension section of the horn cover, restoring the outer second extension section to allow at least a portion of the outer second extension section to fit the breast, wherein the outer second extension section extends outward from a side of the outer first extension section facing away from the device body, and the outer first extension section and the outer second extension section have different extension tendencies.

[0039] According to an embodiment of the present invention, in the step (b), the interference portion of the horn cover is allowed to interfere with the areola. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a perspective schematic diagram of a breast pump according to a preferred embodiment of the present invention.

[0041] FIG2 is a schematic diagram of the breast pump in use according to the preferred embodiment of the present invention.

[0042] FIG3 is a perspective diagram of a milk extraction device of the breast pump according to the preferred embodiment of the present invention from one perspective.

[0043] FIG4 is a perspective schematic diagram of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from another perspective.

[0044] FIG5 is an exploded schematic diagram of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from one perspective.

[0045] FIG6 is an exploded schematic diagram of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from another perspective.

[0046] FIG. 7 is a schematic cross-sectional view of the milk suction device of the breast pump according to the preferred embodiment of the present invention from a three-dimensional perspective.

[0047] FIG8 is a schematic cross-sectional view of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from a planar perspective.

[0048] FIG9 is an enlarged schematic diagram of a local position of FIG8 .

[0049] FIG10 is a schematic cross-sectional view of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from another plane perspective.

[0050] FIG11 is an enlarged schematic diagram of a local position of FIG10.

[0051] FIG12 is a schematic diagram of the assembly process of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from a cross-sectional perspective.

[0052] FIG13 is a schematic diagram of the assembly process of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from another cross-sectional perspective.

[0053] FIG14 is a cross-sectional view of a modified example of the milk suction device of the breast pump according to the preferred embodiment of the present invention.

[0054] FIG15 is a cross-sectional view of yet another modified example of the milk extraction device of the breast pump according to the preferred embodiment of the present invention.

[0055] FIG. 16 is a perspective schematic diagram of another modified example of the milk extraction device of the breast pump according to the preferred embodiment of the present invention.

[0056] FIG. 17 is a perspective schematic diagram of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from another perspective.

[0057] FIG18 is a schematic cross-sectional view of the milk suction device of the breast pump according to the preferred embodiment of the present invention from a three-dimensional perspective.

[0058] FIG19 is a schematic cross-sectional view of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from a planar perspective.

[0059] FIG. 20 is an exploded schematic diagram of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from one perspective.

[0060] FIG. 21 is an exploded schematic diagram of the milk extraction device of the breast pump according to the preferred embodiment of the present invention from another perspective. DETAILED DESCRIPTION

[0061] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components set forth in the following description or illustrated in the following figures. The present invention is capable of other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and their variations herein is intended to cover the items and their equivalents set forth below and additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variations are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. In addition, "connected" and "coupled" are not limited to physical or mechanical connections or couplings.

[0062] Furthermore, on the first hand, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are 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, and therefore the above terms cannot be understood as limitations on the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0063] With reference to Figures 1 to 13 of the accompanying drawings of the present invention, a breast pump according to a preferred embodiment of the present invention will be disclosed and described below. The breast pump includes at least one milking device 100, a breast pump main unit 200, and at least one air tube 300. Opposite ends of the air tube 300 are connected to the milking device 100 and the breast pump main unit 200, respectively. The milking device 100 can be worn in a manner that allows it to be attached to the breast. When the breast pump main unit 200 is in operation, the milking device 100 can help the user express milk. In the breast pump of the present invention, the milking device 100 can be worn in a self-attached manner, that is, without any assistance, for example, without wearing a bra. It is understood that after the milking device 100 is attached to the breast, the user can also wear a bra.

[0064] 2 to 13 , the breast pumping device 100 further includes a device body 10 and a bell cover 20 disposed on the device body 10 , wherein the device body 10 has a milk suction chamber 101, a milk storage chamber 102, and a milk discharge channel 103 capable of connecting the milk suction chamber 101 and the milk storage chamber 102 , wherein the bell cover 20 is disposed on the device body 10 and includes an external first extension section 21 and a reversible external second extension section 22 , wherein the external second extension section 22 extends outward from a side of the external first extension section 21 facing away from the device body 10 , and the external first extension section 21 and the external second extension section 22 have different extension tendencies.

[0065] The bell cover 20 is used to help the user put on the breast pumping device 100. After the user puts the breast pumping device 100 on the breast through the bell cover 20, as the air pressure in the milk suction chamber 101 of the device body 10 gradually decreases, the milk discharge passage 103 of the device body 10 is closed to prevent the milk suction chamber 101 of the device body 10 from communicating with the milk holding chamber 102. On the other hand, milk is sucked out of the breast and temporarily stored in the milk suction chamber 101 of the device body 10. When the air pressure in the milk suction chamber 101 of the device body 10 increases, the milk discharge passage 103 of the device body 10 is opened to allow the milk suction chamber 101 of the device body 10 to communicate with the milk holding chamber 102. At this time, the milk temporarily stored in the milk suction chamber 101 of the device body 10 enters the milk holding chamber 102 through the milk discharge passage 103 of the device body 10. This process is repeated until the user can use the breast pump of the present invention to express milk.

[0066] For example, in this specific example of the breast pump of the present invention shown in Figures 1 to 13, the inner wall of the outer first extension section 21 and the inner wall of the outer second extension section 22 of the bell cover 20 are both inclined surfaces, and the angle α formed between the inner wall of the outer first extension section 21 and the central axis 201 of the bell cover 20 is greater than the angle β formed between the inner wall of the outer second extension section 22 and the central axis 201 of the bell cover 20, so that the outer first extension section 21 and the outer second extension section 22 have different extension tendencies. In this way, on the one hand, when the user wears the breast pumping device 100 through the horn cover 20, the external second extension section 22 of the horn cover 20 can "grab" the breast, that is, the external second extension section 22 provides a gripping force to allow the breast pumping device 100 to be worn securely. On the other hand, the center of gravity of the breast pumping device 100 can be closer to the body. In this way, the breast pumping device 100 can reduce the requirement for the gripping force of the external second extension section 22 of the horn cover 20, which not only allows the breast pumping device 100 to be worn securely and realizes "naked suction", but also avoids compression on the breast during the suction process, which is beneficial to breast health.

[0067] Optionally, in the example of the breast pump of the present invention shown in FIG14 , the inner wall of the external first extension section 21 and the inner wall of the external second extension section 22 of the horn cover 20 are both concave arc surfaces, and the angle α formed between a first connecting line 202 between opposite sides of the inner wall of the external first extension section 21 and the central axis 201 of the horn cover 20 is greater than the angle β between a second connecting line 203 between opposite sides of the inner wall of the external second extension section 22 and the central axis 201 of the horn cover 20, so that the external first extension section 21 and the external second extension section 22 have different extension tendencies.

[0068] Optionally, in other examples of the breast pump of the present invention, the inner wall of the external first extension section 21 of the horn cover 20 is a sloped surface, and the inner wall of the external second extension section 22 is a concave arc surface. The angle α formed between the inner wall of the external first extension section 21 and the central axis 201 of the horn cover 20 is greater than the angle β between the second connecting line 203 between the opposite sides of the inner wall of the external second extension section 22 and the central axis 201 of the horn cover 20, so that the external first extension section 21 and the external second extension section 22 have different extension trends. Alternatively, the inner wall of the external first extension section 21 is a concave arc surface, the inner wall of the external second extension section 22 is a sloped surface, and the angle α formed between the first connecting line 202 between the opposite sides of the inner wall of the external first extension section 21 and the central axis 201 of the horn cover 20 is greater than the angle β between the inner wall of the external second extension section 22 and the central axis 201 of the horn cover 20, so that the external first extension section 21 and the external second extension section 22 have different extension trends.

[0069] Continuing with reference to Figures 1 to 13, in this specific example of the breast pump of the present invention, the first external extension section 21 and the second external extension section 22 of the bell housing 20 can be made of the same material, for example, silicone material can be used to make the first external extension section 21 and the second external extension section 22. In this way, when the user needs to wear the breast pumping device 100, the second external extension section 22 of the bell housing 20 can be turned over. Alternatively, in other examples of the breast pump of the present invention, the first external extension section 21 and the second external extension section 22 of the bell housing 20 can be made of different materials. For example, a plastic material can be used to make the first external extension section 21, and a silicone material can be used to make the second external extension section 22. In this way, when the user needs to wear the breast pumping device 100, the second external extension section 22 of the bell housing 20 can be turned over.

[0070] 7 to 10 , a gap is provided between the external first extension section 21 of the horn cover 20 and the device body 10. Thus, when the user wears the breast pumping device 100, the gravity of the device body 10 causes the external first extension section 21 to deform. At this time, the position of the external second extension section 22 relative to the breast remains unchanged, thereby not affecting the gripping force of the external second extension section 22 on the breast. This helps ensure that the breast pumping device 100 is securely worn.

[0071] Continuing to refer to Figures 1 to 13, the device body 10 further includes a negative pressure forming unit 11, a one-way valve 12 and a milk bottle 13, wherein the negative pressure forming unit 11 has a negative pressure chamber 111 and a gas exchange channel 112 connected to the negative pressure chamber 111, the milk suction chamber 101 and the milk discharge channel 103 of the device body 10 are both formed in the negative pressure forming unit 11, and the air pressure state of the negative pressure chamber 111 of the negative pressure forming unit 11 is positively correlated with the air pressure state of the milk suction chamber 101 of the device body 10, wherein the air pressure of the device body 10 is positively correlated with the air pressure state of the milk suction chamber 101 of the device body 10. The milk holding chamber 102 is formed in the feeding bottle 13. The one-way valve 12 and the feeding bottle 13 are respectively installed on the negative pressure forming unit 11, and the feeding bottle 13 covers the one-way valve 12. The one-way valve 12 is used to control the communication state of the milk discharge channel 103 of the device body 10, that is, the one-way valve 12 enables the milk discharge channel 103 of the device body 10 to allow the milk suction chamber 101 and the milk holding chamber 102 to communicate, and the one-way valve 12 enables the milk discharge channel 103 of the device body 10 to prevent the milk suction chamber 101 and the milk holding chamber 102 from communicating.

[0072] One end of the air tube 300 is installed on the negative pressure forming unit 11, and the air tube 300 is connected to the gas exchange channel 112 of the negative pressure forming unit 11. In this way, the breast pump host 200 can extract the gas from the negative pressure chamber 111 of the negative pressure forming unit 11 through the air tube 300 to reduce the air pressure in the negative pressure chamber 111. Correspondingly, the gas from the external environment can also enter the negative pressure chamber 111 of the negative pressure forming unit 11 through the air tube 300 to increase the air pressure in the negative pressure chamber 111.

[0073] After the user wears the breast pump device 100, when the breast pump main unit 200 is working, the air in the negative pressure chamber 111 of the negative pressure forming unit 11 is discharged through the gas exchange channel 112 and the air tube 300 to reduce the air pressure in the negative pressure chamber 111. At this time, the one-way valve 12 closes the milk discharge channel 103 of the device body 10, and the space of the milk suction chamber 101 of the device body 10 increases, resulting in a decrease in the air pressure in the milk suction chamber 101. At this time, milk can be sucked out and clinically tested. The milk is temporarily stored in the milk suction chamber 101 of the device body 10. Subsequently, air from the external environment enters the negative pressure chamber 111 through the air tube 300 and the gas exchange channel 112 of the negative pressure generating unit 11, thereby increasing the air pressure in the negative pressure chamber 111. At this time, the one-way valve 12 opens the milk discharge channel 103 of the device body 10, and the milk temporarily stored in the milk suction chamber 101 of the device body 10 enters the milk holding chamber 102 through the milk discharge channel 103 of the device body 10. This process is repeated, and the user can then use the breast pump of the present invention to express milk.

[0074] That is, when the space of the negative pressure chamber 111 of the negative pressure forming unit 11 decreases, the space of the milk suction chamber 101 of the device body 10 increases; and when the space of the negative pressure chamber 111 of the negative pressure forming unit 11 increases, the space of the milk suction chamber 101 of the device body 10 decreases. Thus, the size of the negative pressure chamber 111 of the negative pressure forming unit 11 is negatively correlated with the size of the milk suction chamber 101 of the device body 10. When the air pressure in the negative pressure chamber 111 of the negative pressure forming unit 11 decreases, the air pressure in the milk suction chamber 101 of the device body 10 decreases. When the air pressure in the negative pressure chamber 111 of the negative pressure forming unit 11 increases, the air pressure in the milk suction chamber 101 of the device body 10 increases. Thus, the air pressure state in the negative pressure chamber 111 of the negative pressure forming unit 11 is positively correlated with the air pressure state in the milk suction chamber 101 of the device body 10.

[0075] Furthermore, the negative pressure generating unit 11 includes a supporting shell 113 and a negative pressure generating portion 114. The negative pressure generating portion 114 is mounted on the supporting shell 113. The negative pressure chamber 111 of the negative pressure generating unit 11 is formed between the supporting shell 113 and the negative pressure generating portion 114. The gas exchange channel 112 of the negative pressure generating unit 11 is formed in the supporting shell 113. The milk suction chamber 101 and the milk discharge channel 103 of the device body 10 are formed in the negative pressure generating portion 114. The negative pressure chamber 111 of the negative pressure forming unit 11 and the milk suction chamber 101 of the device body 10 are independent of each other, that is, the negative pressure chamber 111 and the milk suction chamber 101 are separated. In this way, the space size of the negative pressure chamber 111 of the negative pressure forming unit 11 and the space size of the milk suction chamber 101 of the device body 10 can be negatively correlated, and at the same time, the air pressure state in the negative pressure chamber 111 of the negative pressure forming unit 11 and the air pressure state in the milk suction chamber 101 of the device body 10 can be positively correlated.

[0076] In this specific example of the breast pump of the present invention shown in Figures 1 to 13, the bell cover 20 is detachably mounted on the device body 10. In this way, on the one hand, the bell cover 20 can be cleaned separately after being removed from the device body 10, and on the other hand, the user can select the bell cover 20 of appropriate material and / or size according to needs.

[0077] Specifically, the bell housing 20 includes an inner extension section 23 that extends outward from a side of the outer first extension section 21 adjacent to the device body 10. That is, the inner extension section 23 and the outer second extension section 22 extend outward from opposite sides of the outer first extension section 21. In some specific examples of the breast pump, the bell housing 20 may be a one-piece structure, that is, the inner extension section 23 and the outer second extension section 22 extend outward from opposite sides of the outer first extension section 21.

[0078] The inner extension section 23 of the horn cover 20 is detachably mounted on the negative pressure forming unit 11 of the device body 10, so that when the inner extension section 23 is mounted on the negative pressure forming unit 11, the horn cover 20 is disposed on the device body 10. Specifically, referring to Figures 7 and 8, the inner extension section 23 of the horn cover 20 is mounted on the negative pressure forming portion 114 of the negative pressure forming unit 11 based on friction.

[0079] Continuing with reference to Figures 1 to 13, the horn cover 20 includes a contact portion 24, which is formed at the connection position between the internal extension section 23 and the external first extension section 21. When the user wears the breast pumping device 100, the contact portion 24 of the horn cover 20 is used to contact the areola. In this way, the areola and the one-way valve 12 can form a closed space in the milk suction cavity 101 of the device body 10.

[0080] In this example of the breast pump shown in Figures 1 to 13, the external first extension section 21 of the speaker cover 20 forms a shoulder ring body 21A, the external second extension section 22 forms a deformable speaker cover body 22A, and the internal extension section 23 forms an assembly ring body 23A. That is, the speaker cover 20 includes the shoulder ring body 21A, the speaker cover body 22A and the assembly ring body 23A, the assembly ring body 23A extends to one side from the inner edge of the shoulder ring body 21A, and the speaker cover body 22A extends in the opposite direction from the outer edge of the shoulder ring body 21A. The interference portion 24 of the speaker cover 20 is located at the connection between the shoulder ring body 21A and the assembly ring body 23A. Preferably, in a specific example of the breast pump of the present invention, the mounting ring 23A integrally extends from the inner edge of the shoulder ring 21A toward one side, and the bell housing 22A integrally extends from the outer edge of the shoulder ring 21A toward the opposite direction. In other words, the bell housing 20 is a single piece. For example, in some embodiments, the bell housing 20 can be injection molded from a silicone material, thus being flexible and integral.

[0081] 8 , the assembly ring 23A of the speaker cover 20 is assembled to the negative pressure forming portion 114 , and a movable space 1000 is provided between the speaker cover body 22A and the negative pressure forming unit 11 to allow the deformed speaker cover body 22A to flip toward the negative pressure forming unit 11 . When the user wears the breast pumping device 100 by adsorbing the speaker cover 20 on the breast, the breast closes the opening of the speaker cover 22A, and the speaker cover 22A provides a gripping force for "grasping" the breast. In this way, on the one hand, before the user wears the breast pumping device 100, the speaker cover 22A can be turned toward the negative pressure forming unit 11, and after the nipple is aligned with the milk suction cavity 101 of the device body 10 and the contact part 24 of the speaker cover 20 contacts the areola, the speaker cover 22A is restored so that the speaker cover 22A fits tightly to the breast in a manner of "grasping" the breast. In this way, the breast can close the opening of the speaker cover 22A and the speaker cover 20 can be adsorbed on the breast, and the contact part 24 of the speaker cover 20 can keep contacting the areola, so that during the milk suction process, the suction of the device body 10 The milk cavity 101 and a portion of the internal space of the horn cover 20 form a negative pressure environment; on the other hand, after the user wears the breast pump device 100 by adsorbing the horn cover 20 on the breast, the horn cover 20 isolates the negative pressure forming unit 11 and the breast, preventing the negative pressure forming unit 11 from directly contacting the breast. The flexible horn cover 20 can improve the comfort of the user when using the breast pump; on the other hand, when the assembly ring body 23A of the horn cover 20 changes with the position of the negative pressure forming unit 11, the shoulder ring body 21A of the horn cover 20 can be deformed to prevent the horn cover body 22A from changing with the position of the negative pressure forming unit 11. In this way, during the milk pumping process, the horn cover 20 can always reliably fit the user's breast in a manner of "grabbing" the breast, preventing the breast pump device 100 from falling off the breast and avoiding milk leakage.

[0082] In the breast pump of the present invention, referring to FIG8 , a distance D1 between the interference portion 24 of the bell housing 20 and the outer edge of the second outer extension section 22 is greater than a distance D2 between a portion of the negative pressure generating portion 114 defining the assembly opening and the outer edge of the second outer extension section 22, so that the interference portion 24 of the bell housing 20 is retracted, allowing the device body 10 to surround at least a portion of the interference portion 24. In this way, the center of gravity of the breast pumping device 100 can be closer to the bell housing 20. Therefore, when a user wears the breast pumping device 100, the center of gravity of the breast pumping device 100 is closer to the body, and the component of the gravity of the breast pumping device 100 acting on the breast can be reduced. Therefore, the breast pumping device 100 can reduce the gripping force requirement of the bell housing 20, thereby preventing the breast pumping device 100 from falling off the breast and preventing the breast pumping device 100 from causing pressure on the breast during milk pumping, thereby ensuring breast health.

[0083] In the breast pump of the present invention, referring to FIG8 , the outer first extension section 21 of the horn cover 20 extends outwardly and forwardly from the inner extension section 23 in a direction substantially perpendicular to the inner extension section 23, and the outer second extension section 22 extends outwardly and forwardly from the outer first extension section 21 in a direction substantially horizontal to the inner extension section 23. In this way, when the outer edge of the outer second extension section 22 and the outer edge of the inner extension section 23 have a small distance, the outer edge of the outer second extension section 22 can form a larger opening, and the horn cover 20 is located at the contact portion. The position of the contact portion 24 can form a smaller opening, so that the second external extension section 22 can grip the breast and the contact portion 24 can contact the areola. Therefore, when the user wears the breast pumping device 100, the center of gravity of the breast pumping device 100 is closer to the body, so that the component of the gravity of the breast pumping device 100 acting on the breast can be reduced. Therefore, the breast pumping device 100 can reduce the gripping force requirement of the second external extension section 22, thereby preventing the breast pumping device 100 from falling from the breast and preventing the breast pumping device 100 from causing pressure on the breast during milk pumping, thereby ensuring breast health.

[0084] In addition, in the breast pump of the present invention, the negative pressure generating unit 11 of the device body 10 does not need to be provided with any electronic components. Instead, the gas exchange channel 112 of the negative pressure generating unit 11 is connected to the breast pump main unit 200 via the air tube 300. In this way, the breast pumping device 100 can have a lighter weight and a smaller size. Not only can the center of gravity of the breast pumping device 100 be closer to the horn cover 20 so that the breast pumping device 100 can be worn reliably, but the lighter weight can also reduce the burden on the breasts.

[0085] Continuing with reference to Figure 8, the angle β formed between the inner wall of the external second extension section 22 of the speaker cover 20 and the central axis 201 of the speaker cover 20 cannot be too small or too large. If the angle β is too small, the opening size of the external second extension section 22 will be too small, and the external second extension section 22 will not be able to cover the breast and the contact portion 24 of the speaker cover 20 will not be able to contact the areola. Even if the breast is forced into the external second extension section 22, the external second extension section 22 will provide a large gripping force and act on the breast, causing discomfort to the breast and even damage to the breast. If the angle β is too large, the opening size of the external second extension section 22 will be too large, and the external second extension section 22 will not be able to fit the breast to provide appropriate gripping force. In the breast pump of the present invention, the minimum value of the angle β is preferably not less than 15°, and the maximum value is preferably not greater than 40°. Therefore, the suitable range of the angle β is 15° to 40°, that is, the angle β satisfies: 15°≤β≤40°.

[0086] In addition, referring to Figure 8, the angle α formed between the inner wall of the external first extension section 21 of the horn cover 20 and the central axis 201 of the horn cover 20 is greater than the angle β. In this way, when the outer edge of the external second extension section 22 and the outer edge of the internal extension section 23 are at a small distance, the outer edge of the external second extension section 22 can form a larger opening, and the horn cover 20 can form a smaller opening at the position of the interference portion 24, so that the external second extension section 23 can grasp the breast and the interference portion 24 can resist the areola. Therefore, when the user wears the breast pumping device 100, the center of gravity of the breast pumping device 100 is closer to the body, so that the component of the gravity of the breast pumping device 100 acting on the breast can be reduced, so that the breast pumping device 100 can reduce the gripping force requirement of the horn cover 20, thereby preventing the breast pumping device 100 from falling off the breast and preventing the breast pumping device 100 from causing pressure on the breast during milk pumping, thereby ensuring breast health.

[0087] With reference to Figures 7, 8, and 12, after the inner extension section 23 of the bell housing 20 is mounted on the negative pressure generating portion 114, the outer edge of the inner extension section 23 extends to the outside of the milk discharge passage 103 of the device body 10, forming a step. This prevents the expressed milk from flowing to the outer second extension section 22 and thereby leaking from the contact between the outer second extension section 22 and the breast. In other words, the expressed milk is only allowed to be discharged through the milk discharge passage 103 of the device body 10.

[0088] 5 to 9, the speaker cover 20 further includes a limiting portion 25, which extends integrally from the peripheral wall of the internal extension section 23 in a direction perpendicular to the extension direction of the internal extension section 23, and there is a gap between the limiting portion 25 and the external first extension section 21. In this way, when the speaker cover 20 is installed on the device body 10, the limiting portion 25 limits the assembly depth of the internal extension section 23 by abutting against the negative pressure forming portion 114, so that: on one side On the other hand, the limiting portion 25 can ensure that there is a gap between the outer first extension section 21 and the negative pressure forming portion 114, so that when the inner extension section 23 changes with the position of the negative pressure forming unit 11, the outer first extension section 21 can be deformed. On the other hand, the limiting portion 25 can ensure that the outer edge of the inner extension section 23 extends to the outside of the milk discharge channel 103 of the device body 10, thereby preventing the inner extension section 23 from covering the milk discharge channel 103 of the device body 10.

[0089] In the specific example of the breast pump shown in Figures 1 to 13, the limiting portion 25 is annular, and the distance between the outer side of the limiting portion 25 and the central axis 201 of the horn cover 20 is greater than the distance between the outer side of the external first extension section 21 and the central axis 201 of the horn cover 20. In this way, when viewed from a top perspective of the horn cover 20 (perpendicular to the central axis 201 of the horn cover 20), the limiting portion 25 covers the external first extension section 21, making it visually invisible.

[0090] Referring to Figures 6 to 8, the negative pressure forming part 114 has an embedding groove 1141, and the limiting part 25 of the speaker cover 20 has an embedding protrusion 251, and the shape and size of the embedding protrusion 251 match the shape and size of the embedding groove 1141 of the negative pressure forming part 114, wherein the embedding protrusion 251 of the limiting part 25 is embedded in the embedding groove 1141 of the negative pressure forming part 114, based on the friction force generated between the inner wall of the negative pressure forming part 114 for forming the embedding groove 1141 and the outer wall of the embedding protrusion 251 of the limiting part 25, the speaker cover 20 can be reliably installed on the negative pressure forming part 114.

[0091] In the specific example of the breast pump shown in Figures 1 to 13, the embedding groove 1141 of the negative pressure forming portion 114 is annular. Correspondingly, the embedding protrusion 251 of the limiting portion 25 of the speaker cover 20 is annular and surrounds the inner extension section 23. In this way, when installing the speaker cover 20 on the device body 10, there is no need to pay attention to the installation direction of the speaker cover 20.

[0092] Continuing to refer to Figures 1 to 13, the support shell 113 includes a shell body 1131 and a trumpet body 1132 extending outward as a whole from one end of the shell body 1131, the shell body 1131 has an installation cavity 11311 and an installation opening 11312 connected to the installation cavity 11311, the gas exchange channel 112 of the negative pressure forming unit 11 is provided in the shell body 1131, and the gas exchange channel 112 of the negative pressure forming unit 11 is connected to the installation cavity 11311 of the shell body 1131.

[0093] The negative pressure forming portion 114 includes a deformable portion 1141 and a skeleton portion 1142. The milk suction chamber 101 and the milk discharge channel 103 of the device body 10 are formed in the deformable portion 1141. The deformable portion 1141 has a coupling end 11411 and a deformable end 11412 corresponding to the coupling end 11411. The skeleton portion 1142 is coupled to the coupling end 11411 of the deformable portion 1141.

[0094] The skeleton portion 1142 of the negative pressure forming portion 114 is mounted on the mounting opening 11312 of the shell body 1131 of the support shell 113, and the deformed portion 1141 extends through the mounting opening 11312 of the shell body 1131 to the mounting cavity 11311. The negative pressure cavity 111 of the negative pressure forming unit 11 is formed between the deformed portion 1141 and the shell body 1131. In other words, the mounting cavity 11311 of the shell body 1131 is used to form the negative pressure cavity 111 of the negative pressure forming unit 11. Since the gas exchange channel 112 of the negative pressure forming unit 11 is connected to the shell body 1131, the gas exchange channel 112 of the negative pressure forming unit 11 is connected to the negative pressure cavity 111.

[0095] When the breast pump main unit 200 is working, the air in the negative pressure chamber 111 of the negative pressure forming unit 11 is extracted through the gas exchange channel 112 and the air tube 300 to reduce the air pressure in the negative pressure chamber 111. At this time, the one-way valve 12 closes the milk discharge channel 103 of the device body 10, and the deformed end 11412 of the deformed portion 1141 deforms toward the end close to the shell body 1131 and away from the horn body 1132, thereby increasing the space of the milk suction chamber 101 of the device body 10, resulting in a decrease in the air pressure in the milk suction chamber 101. As air from the external environment enters the negative pressure chamber 111 of the negative pressure forming unit 11 through the air pipe 300 and the gas exchange channel 112 of the negative pressure forming unit 11, the air pressure in the negative pressure chamber 111 increases. At this time, the one-way valve 12 opens the milk discharge channel 103 of the device body 10 to discharge milk. The deformed end 11412 of the deformed portion 1141 deforms toward the end away from the shell body 1131 and away from the horn body 1132, so as to reduce the space of the milk suction chamber 101 of the device body 10, thereby causing the air pressure in the milk suction chamber 101 to increase.

[0096] It is worth noting that the manner in which the frame portion 1142 is coupled to the coupling end 11411 of the deformable portion 1141 is not limited in the breast pump of the present invention. For example, in one specific example of the breast pump of the present invention, the deformable portion 1141 and the frame portion 1142 are manufactured separately, and glue is used to adhere the frame portion 1142 to the coupling end 11411 of the deformable portion 1141, thereby coupling the frame portion 1142 to the coupling end 11411 of the deformable portion 1141. In another specific example of the breast pump of the present invention, the deformable portion 1141 is first manufactured, and then the frame portion 1142 is integrally coupled to the deformable portion 1141 through a secondary encapsulation process, thereby coupling the frame portion 1142 to the coupling end 11411 of the deformable portion 1141. In another specific example of the breast pump of the present invention, first, the skeleton portion 1142 is manufactured, and secondly, the coupling end 11411 of the deformation portion 1141 is integrally coupled to the skeleton portion 1142 through a secondary encapsulation process, so that the skeleton portion 1142 is coupled to the coupling end 11411 of the deformation portion 1141.

[0097] In this specific example of the breast pump of the present invention shown in Figures 1 to 13, the skeleton portion 1142 of the negative pressure generating portion 114 surrounds the coupling end 11411 of the deforming portion 1141, so that the skeleton portion 1142 enables the negative pressure generating portion 114 to be reliably mounted on the supporting shell 113.

[0098] 5 to 8 , the bottom of the skeleton portion 1142 of the negative pressure forming portion 114 has an internal mounting arm 11421, an external mounting arm 11422 and an arm body channel 11423. The external mounting arm 11422 surrounds the internal mounting arm 11421, and the arm body channel 11423 passes through the internal mounting arm 11421. The arm body channel 11423 is connected to the milk discharge channel 103 of the device body 10. The one-way valve 12 is mounted on the internal mounting arm 11421 of the skeleton portion 1142, and the milk bottle 13 is mounted on the external mounting arm 11422 of the skeleton portion 1142, so as to respectively set the one-way valve 12 and the milk bottle 13 on the negative pressure forming portion 114 of the negative pressure forming unit 11.

[0099] Preferably, the one-way valve 12 is a duckbill valve, and as the air pressure in the milk suction chamber 101 of the device body 10 changes, the one-way valve 12 can switch between an open state and a closed state, wherein when the deformed end 11412 of the deformable portion 1141 deforms toward the end close to the shell body 1131 and away from the horn 1132, causing the air pressure in the milk suction chamber 101 to decrease, the one-way valve 12 closes the milk discharge channel 103 of the device body 10; when the deformed end 11412 of the deformable portion 1141 deforms toward the end away from the shell body 1131 and away from the horn 1132, causing the air pressure in the milk suction chamber 101 to increase, the one-way valve 12 opens the milk discharge channel 103 of the device body 10.

[0100] In the example of the breast pump of the present invention shown in Figures 1 to 13, the negative pressure generating portion 114 is detachably mounted on the support shell 113. In this way, the negative pressure generating portion 114 can be separately cleaned after being removed from the support shell 113, thereby improving the hygiene of the milk pumping device 100.

[0101] Continuing with reference to Figures 10 to 13, the device body 10 of the breast pump device 100 further includes at least one ball plunger 14, which includes a cylindrical portion 141, a compression spring 142, and a ball portion 143, wherein the cylindrical portion 141 has a cylindrical cavity 1411 and a cavity opening 1412 connected to the cylindrical cavity 1411, the compression spring 142 is compressibly disposed in the cylindrical cavity 1411 of the cylindrical portion 141, and the ball portion 143 is movably disposed in the cavity opening 1412 of the cylindrical portion 141, with the bottom of the ball portion 143 abutting against the compression spring 142, and the top of the ball portion 143 protruding from the cylindrical portion 141. The column part 141 of the ball plunger 14 is fixedly mounted on the shell body 1131 of the support shell 113, and the ball part 143 protrudes into the mounting cavity 11311 of the shell body 1131. The outer wall of the skeleton part 1142 of the negative pressure forming part 114 has at least one retaining groove 11424. When the negative pressure forming part 114 is mounted on the support shell 113, the outer wall of the skeleton part 1142 pushes the ball part 143 toward the bottom of the column part 141, so that the ball part 143 squeezes the compression spring. 142 causes the compression spring 142 to deform and accumulate elastic potential energy. When the negative pressure forming part 114 is installed in place, the compression spring 142 pushes the ball head part 143 in the direction away from the bottom of the column part 141, so that the ball head part 143 protrudes into the retaining groove 11424 of the skeleton part 1142. Based on the friction force generated between the peripheral wall of the skeleton part 1142 for forming the retaining groove 11424 and the outer surface of the ball head part 143, the ball head plunger 14 enables the negative pressure forming part 114 to be reliably installed on the support shell 113. Accordingly, when removing the negative pressure forming part 114 from the support shell 113, as long as the pulling force of pulling the negative pressure forming part 114 outward is greater than the friction force generated between the peripheral wall of the skeleton part 1142 used to form the retaining groove 11424 and the outer surface of the ball head part 143, the ball head part 143 can be separated from the retaining groove 11424 of the skeleton part 1142.

[0102] It is worth noting that the manner in which the column portion 141 of the ball plunger 14 is fixedly mounted to the housing body 1131 of the support housing 113 is not limited in the breast pump of the present invention. For example, in this specific example of the breast pump of the present invention, referring to Figures 10 and 11 , the housing body 1131 of the support housing 113 has at least one mounting hole 11313, and the column portion 141 of the ball plunger 14 is mounted in the mounting hole 11313 of the housing body 1131 to securely mount the column portion 141 to the housing body 1131.

[0103] In a specific example of the breast pump of the present invention, the shell body 1131 of the support shell 113 has two mounting holes 11313, and the two mounting holes 11313 are located on opposite sides of the mounting cavity 11311. The number of the ball plungers 14 is two, and the column portion 141 of each ball plunger 14 is fixedly mounted on each mounting hole 11313 of the shell body 1131. In this way, one ball plunger 14 is provided on opposite sides of the mounting cavity 11311 of the shell body 1131, and correspondingly, one holding groove 11424 is provided on opposite sides of the skeleton portion 1142 of the negative pressure forming portion 114, so that the negative pressure forming portion 114 can be formed in the negative pressure forming portion 114. When the forming part 114 is installed on the shell body 1131 of the supporting shell 113, the ball head parts 143 of the two ball head plungers 14 are respectively held in the two retaining grooves 11424 of the skeleton part 1142, so that the negative pressure forming part 114 can be reliably installed in the mounting opening 11312 of the shell body 1131. In this way, the skeleton part 1142 and the shell body 1131 can squeeze a part of the deforming part 1141 so that the part of the deforming part 1141 prevents the generation of a gap between the skeleton part 1142 and the shell body 1131 by deformation, thereby ensuring the sealing of the negative pressure chamber 111 of the negative pressure forming unit 11.

[0104] In an example of the breast pump of the present invention shown in FIG. 1 to FIG. 13 , the device body 10 further includes an airway unit 15 , and the airway unit 15 includes an air guide seat 151 and a reversing seat 152 .

[0105] The air guide seat 151 has a transversely extending first air duct 1511 and a bottom socket 1512 and a top socket 1513 respectively connected to the first air duct 1511. The top of the shell body 1131 of the supporting shell 113 has a shell insertion arm 11314. The opening of the gas exchange channel 112 of the negative pressure forming unit 11 is formed on the end face of the shell insertion arm 11314. The air guide seat 151 is arranged on the top of the shell body 1131 in such a way that the shell insertion arm 11314 is inserted into the bottom socket 1512.

[0106] The reversing seat 152 has a bottom insert arm 1521, a side insert arm 1522, and a second air passage 1523. One opening of the second air passage 1523 is formed on the end surface of the bottom insert arm 1521, and the other opening is formed on the end surface of the side insert arm 1522. The bottom insert arm 1521 of the reversing seat 152 is inserted into the top insertion hole 1513 of the air guide seat 151, so that the negative pressure chamber 111 of the negative pressure generating unit 11, the first air passage 1511 of the air guide seat 151, and the second air passage 1523 of the reversing seat 152 are sequentially connected.

[0107] In the example of the breast pump shown in Figures 1 to 13 , by disposing the air guide seat 151 and the reversing seat 152 on the top of the shell body 1131 of the support housing 113, the portion of the breast pumping device 100 that connects to the air tube 300 (i.e., the side arms 1522 of the reversing seat 152) can be positioned in a suitable location, thus preventing this portion from occupying a large space. In other words, the provision of the air guide seat 151 and the reversing seat 152 of the airway unit 15 enables the miniaturization of the breast pumping device 100. This prevents the user from excessively pushing against a bra when wearing the breast pumping device 100. Furthermore, the pressure exerted by the bra on the breast through the breast pumping device 100 is reduced, thereby improving the user's comfort while expressing milk through the breast pumping device 100.

[0108] In this example of the breast pump shown in Figures 1 to 13, the bottom insertion arm 1521 of the reversing seat 152 is detachably inserted into the top insertion hole 1513 of the air guide seat 151. In this way, the user can select the orientation of the side insertion arm 1522 of the reversing seat 152 as needed. For example, the user can allow the bottom insertion arm 1521 of the reversing seat 152 to be inserted into the top insertion hole 1513 of the air guide seat 151 with the side insertion arm 1522 of the reversing seat 152 facing left as needed, or can allow the bottom insertion arm 1521 of the reversing seat 152 to be inserted into the top insertion hole 1513 of the air guide seat 151 with the side insertion arm 1522 of the reversing seat 152 facing right as needed. In this way, the user does not need to distinguish between the two milk suction devices 100 during the process of assembling the breast pump.

[0109] In this example of the breast pump shown in Figures 1 to 13, the negative pressure forming unit 11 further includes an outer cover shell 115 and a receiving cavity 116. The outer cover shell 115 has a positioning hole 1151. The outer cover shell 115 is fixedly mounted on the outer edge of the horn body 1132 of the support shell 113 to form the receiving cavity 116 of the negative pressure forming unit 11 between the support shell 113 and the outer cover shell 115. The positioning hole 1151 of the outer cover shell 115 is connected to the receiving cavity 116 of the negative pressure forming unit 11. The air guide seat 151 has a top boss 1514, the opening of the top socket 1513 is formed on the end face of the top boss 1514, the air guide seat 151 is accommodated in the accommodating cavity 116 of the negative pressure forming unit 11, and the top boss 1514 of the air guide seat 151 extends to the positioning hole 1151 of the outer cover shell 115. It can be understood that since the shell arm 11314 of the shell body 1131 of the supporting shell 113 is inserted into the bottom socket 1512 of the air guide seat 151 and the top boss 1514 of the air guide seat 151 extends to the positioning hole 1151 of the outer cover shell 115, the air guide seat 151 is stably accommodated in the accommodating cavity 116 of the negative pressure forming unit 11. Regardless of whether the bottom arm 1521 of the reversing seat 152 is inserted into the top socket 1513 of the air guide seat 151 or the bottom arm 1521 of the reversing seat 152 is pulled out from the top socket 1513 of the air guide seat 151, the air guide seat 151 will not shift.

[0110] 7 and 8, the top of the shell body 1131 of the support shell 113 has a positioning wall 11315, the positioning wall 11315 surrounds the bottom of the air guide seat 151, and the inner wall of the positioning wall 11315 fits the outer wall of the air guide seat 151. In this way, on the one hand, before the outer cover 115 is assembled to the support shell 113, the positioning wall 11315 of the shell body 1131 can pre-position the air guide seat 151, so that when the outer cover 115 is assembled to the support shell 113, the positioning wall 11315 of the shell body 1131 can pre-position the air guide seat 151. During the process of supporting the shell body 113, the positioning wall 11315 of the shell body 1131 can prevent the air guide seat 151 from being misplaced, thereby improving assembly efficiency. On the other hand, when the bottom arm 1521 of the reversing seat 152 is inserted into the top socket 1513 of the air guide seat 151 or the bottom arm 1521 of the reversing seat 152 is pulled out from the top socket 1513 of the air guide seat 151, the positioning wall 11315 of the shell body 1131 can prevent the air guide seat 151 from being displaced.

[0111] Continuing to refer to Figures 5 to 8, the outer cover shell 115 includes an outer shell 1152 and an anti-detachment cover 1153, the positioning hole 1151 is formed in the anti-detachment cover 1153, wherein the outer shell 1152 has a shell channel 11521, and the outer shell 1152 is fixedly mounted on the outer edge of the speaker body 1132 of the support shell 113, and the position of the top boss 1514 of the air guide seat 151 corresponds to the position of the shell channel 11521 of the outer shell 1152, wherein the anti-detachment cover 1153 is fixedly mounted on the shell channel 11521 of the outer shell 1152 in a manner that the top boss 1514 of the air guide seat 151 is inserted into the positioning hole 1151 of the outer cover shell 115. In this way, the support shell 113, the air guide seat 151 and the outer cover shell 115 can be conveniently installed and the misalignment of the air guide seat 151 can be avoided.

[0112] It is worth mentioning that the manner in which the outer shell 1152 is fixedly mounted to the horn 1132 of the support shell 113 is not limited in the breast pump of the present invention. For example, in this specific example of the breast pump of the present invention, referring to FIG5 , the rear side of the horn 1132 of the support shell 113 has a plurality of snap-fitting arms 11321, each of which has a snap-fitting hole 113211. The inner wall of the outer shell 1152 has a plurality of snap-fitting protrusions 11522. The snap-fitting arms 11321 of the horn 1132 extend into the interior of the outer shell 1152, and the snap-fitting protrusions 11522 of the outer shell 1152 are respectively snapped into the snap-fitting holes 113211 of the snap-fitting arms 11321, so that the outer shell 1152 is fixedly mounted to the horn 1132 of the support shell 113.

[0113] Optionally, in other specific examples of the breast pump of the present invention, the clamping arm 11321 can be provided on the outer shell 1152, and the clamping protrusion 11522 is provided on the horn body 1132, so that the clamping arms 11321 of the outer shell 1152 extend into the interior of the horn body 1132, and the clamping protrusions 11522 of the horn body 1132 are respectively clamped into the clamping holes 113211 of the clamping arms 11321 of the outer shell 1152, so that the outer shell 1152 is fixedly mounted on the horn body 1132 of the support shell 113.

[0114] It is worth mentioning that the manner in which the anti-detachment cover 1153 is fixedly mounted on the housing channel 11521 of the outer shell 1152 is not limited in the breast pump of the present invention. For example, in this specific example of the breast pump of the present invention, referring to Figures 5 to 7, the anti-detachment cover 1153 has a plurality of hook arms 11531 on opposite sides, the shape of the anti-detachment cover 1153 matches the shape of the shell channel 11521 of the outer shell 1152, and the size of the anti-detachment cover 1153 is slightly larger than the size of the shell channel 11521 of the outer shell 1152, and these hook arms 11531 of the anti-detachment cover 1153 extend from the outside to the inside of the outer shell 1152 through the shell channel 11521 of the outer shell 1152, so as to fix the anti-detachment cover 1153 to the shell channel 11521 of the outer shell 1152, and the anti-detachment cover 1153 seals the shell channel 11521 of the outer shell 1152.

[0115] In this example of the breast pump shown in Figures 1 to 13, the bottom of the shell body 1131 of the support shell 113 has a mounting notch 11316, and the external mounting arm 11422 of the skeleton part 1142 can be held in the mounting notch 11316 of the shell body 1131, and the feeding bottle 13 is mounted on the external mounting arm 11422 of the skeleton part 1142. In this way, on the one hand, the sucked milk can be collected in the feeding bottle 13, and on the other hand, the skeleton part 1142 is held above the part of the shell body 1131 for forming the mounting notch 11316, and the feeding bottle 13 is held below. In this way, the skeleton part 1142 and the feeding bottle 13 clamp the part of the shell body 1131 for forming the mounting notch 11316 on opposite sides of the part, so as to further ensure that the negative pressure generating part 114 is reliably and stably mounted on the support shell 113.

[0116] 5 and 6 , the external mounting arm 11422 of the frame portion 1142 has at least one snap-fitting groove 114221 extending in the circumferential direction and at least one guide groove 114222 extending in the height direction and connected to one end of the snap-fitting groove 114221. The bottle mouth of the feeding bottle 13 has at least one snap-fitting protrusion 131. The snap-fitting protrusion 131 of the feeding bottle 13 can slide into the snap-fitting groove 114221 through the guide groove 114222 of the external mounting arm 11422 of the frame portion 1142, thereby mounting the feeding bottle 13 on the external mounting arm 11422 of the frame portion 1142. Optionally, in other examples of the breast pump of the present invention, the feeding bottle 13 and the external mounting arm 11422 of the frame portion 1142 can also be detachably mounted via a threaded structure.

[0117] FIG15 shows a modified example of the breast pump of the present invention. Unlike the breast pump shown in FIG1 to FIG13 , in this specific example of the breast pump of the present invention shown in FIG15 , the interference portion 24 of the bell cover 20 is mounted on the inner extension 23. When the user wears the breast pumping device 100, the interference portion 24 of the bell cover 20 is used to interfere with the areola. In this way, the areola and the one-way valve 12 can form a closed space within the milk suction chamber 101 of the device body 10. Preferably, the interference portion 24 can be securely mounted on the inner extension 23 due to the friction generated between the interference portion 24 and the inner extension 23.

[0118] Furthermore, the resistance part 24 includes a ring part 241 and a deformable resistance part 242, the resistance part 242 extends inward and backward from the outer end of the ring part 241, and the ring part 241 is installed on the internal extension section 23. When the user wears the breast pumping device 100, the resistance part 242 of the resistance part 24 contacts the areola. During the milk pumping process, when the pressure in the milk pumping cavity 101 of the device body 10 decreases, the areola will be pulled toward the milk pumping cavity 101 of the device body 10. The resistance part 242 of the resistance part 24 provides resistance to prevent the areola from deforming toward the milk pumping cavity 101 of the device body 10. At this time, the areola will be squeezed by pressure to improve the milk pumping efficiency and massage the areola. It is understood that the interference portion 242 of the interference part 24 deforms toward the milk suction cavity 101 of the device body 10 while providing resistance, so that the areola is resisted while being prevented from being hard squeezed, thereby improving comfort. Optionally, in other examples of the breast pump of the present invention, the interference portion 242 of the interference part 24 and the inner extension section 23 are integral.

[0119] FIG16 to FIG21 show another modified example of the breast pump of the present invention. Different from the breast pump shown in FIG1 to FIG13, in this specific example of the breast pump of the present invention shown in FIG16 to FIG21, the negative pressure generating unit 11 includes the support shell 113, the negative pressure generating portion 114 and the outer cover 115, the negative pressure generating portion 114 includes the deformed portion 1141, the support shell 113 and the outer cover 115 are mounted on each other, and the deformed portion 1141 is clamped to the support shell The negative pressure chamber 111 of the negative pressure forming unit 11 is formed between the negative pressure forming portion 114 and the outer cover shell 115, the gas exchange channel 112 of the negative pressure forming unit 11 is formed in the outer cover shell 115, the milk suction chamber 101 of the device body 10 is formed between the support shell 113 and the deformed portion 1141, the milk discharge channel 103 is formed in the support shell 113, and the one-way valve 12 and the feeding bottle 13 are respectively installed on the support shell 113.

[0120] Furthermore, the top of the support shell 113 and the top of the outer cover shell 115 are rotatably installed, and the side of the support shell 113 and the side of the outer cover shell 115 are detachably installed, wherein when the side of the support shell 113 and the side of the outer cover shell 115 are installed, the deformed portion 1141 is clamped between the support shell 113 and the outer cover shell 115, so that the milk suction chamber 101 of the device body 10 is formed between the deformed portion 1141 and the support shell 113 and the negative pressure chamber 111 of the negative pressure forming unit 11 is formed between the deformed portion 1141 and the support shell 113, wherein after the side of the support shell 113 and the side of the outer cover shell 115 are separated, the deformed portion 1141 can be removed from between the support shell 113 and the outer cover shell 115 to clean the negative pressure forming part 114.

[0121] Furthermore, the inner wall of the outer cover shell 115 has an annular convex wall 1154, and the deformed portion 1141 has an annular groove 11411. The annular convex wall 1154 of the outer cover shell 115 can extend into the annular groove 11411 of the deformed portion 1141 to install the deformed portion 1141 on the outer cover shell 115. In this way, when the side of the outer cover shell 115 is separated from the side of the support shell 113 and the outer cover shell 115 is turned over, the breast pump can prevent the deformed portion 1141 from falling uncontrollably. When the outer cover shell 115 is turned over and the side of the outer cover shell 115 and the side of the support shell 113 are installed, the method of pre-installing the deformed portion 1141 on the outer cover shell 115 can enable the deformed portion 1141 to be clamped between the support shell 113 and the outer cover shell 115.

[0122] It is worth mentioning that the installation method of the side of the support shell 113 and the side of the outer shell 115 is not limited in the breast pump of the present invention. For example, in the specific example of the breast pump of the present invention shown in Figures 16 to 21, the side of the support shell 113 has a deformable extension arm 1133, the end of the extension arm 1133 has a positioning protrusion 11331, and the side of the outer shell 115 has a positioning through-hole 1155. When the outer shell 115 is turned over and the side of the outer shell 115 and the side of the support shell 113 are installed, the inner wall of the outer shell 115 presses the positioning protrusion 11331 of the extension arm 1133, causing the extension arm 1133 to bend and deform, thereby accumulating elastic potential energy. When the outer shell 115 is turned over to the extension arm 1133, the extension arm 1133 is deformed. When the position of the positioning protrusion 11331 corresponds to the position of the positioning through-hole 1155 of the outer cover shell 115, the extension arm 1133 is restored so that the positioning protrusion 11331 of the extension arm 1133 enters the positioning through-hole 1155 of the outer cover shell 115, thereby installing the side of the outer cover shell 115 and the side of the support shell 113. When it is necessary to separate the side of the outer cover shell 115 and the side of the support shell 113, press the positioning protrusion 11331 of the extension arm 1133 so that the positioning protrusion 11331 exits the positioning through-hole 1155 of the outer cover shell 115, and then flip the outer cover shell 115.

[0123] Continuing to refer to FIG. 16 to FIG. 21 , the airway unit 15 is mounted on the outer housing 115 , and the air pipe 300 is allowed to be mounted on the airway unit 15 .

[0124] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

[0125]

Claims

1. A breast pumping device, characterized in that: include: The device body comprises a milk suction cavity, a milk storage cavity and a milk discharge passage which can connect the milk suction cavity and the milk storage cavity; and A speaker cover, wherein the speaker cover is arranged on the device body, and the speaker cover includes an external first extension section and a flippable external second extension section, the external second extension section extends outward from a side of the external first extension section away from the device body, and the external first extension section and the external second extension section have different extension tendencies.

2. The breast pump device according to claim 1, wherein the inner wall of the first external extension section and the inner wall of the second external extension section are both inclined surfaces, and the angle α formed between the inner wall of the first external extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the second external extension section and the central axis of the horn cover.

3. The breast pump device according to claim 1, wherein the inner wall of the first external extension section and the inner wall of the second external extension section are both concave arc surfaces, and the angle α formed by the line between the opposite sides of the inner wall of the first external extension section and the central axis of the horn cover is greater than the angle β between the line between the opposite sides of the inner wall of the second external extension section and the central axis of the horn cover.

4. The breast pump device according to claim 1, wherein the inner wall of the first external extension section is an inclined surface, the inner wall of the second external extension section is a concave arc surface, and the angle α formed between the inner wall of the first external extension section and the central axis of the horn cover is greater than the angle β between the line between the opposite sides of the inner wall of the second external extension section and the central axis of the horn cover.

5. The breast pump device according to claim 1, wherein the inner wall of the first external extension section is a concave arc surface, the inner wall of the second external extension section is a slope, and the angle α formed by the line between the opposite sides of the inner wall of the first external extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the second external extension section and the central axis of the horn cover.

6. A breast pump device according to claim 1, wherein the outer second extension section and the outer first extension section are made of the same material.

7. A breast pump device according to claim 1, wherein the outer second extension section and the outer first extension section are made of different materials.

8. The breast pump device of claim 6, wherein a gap is provided between the outer first extension and the device body.

9. A breast pump device according to any one of claims 1 to 8, wherein the bell housing comprises an inner extension section, the inner extension section extending outwardly from a side of the outer first extension section adjacent to the device body, wherein the inner extension section is detachably mounted on the device body, so that when the inner extension section is mounted on the device body, the bell housing is disposed on the device body.

10. The breast pumping device according to claim 9, wherein the horn cover comprises a contact portion, the contact portion is formed at a connection position between the outer first extension section and the inner extension section, and is used for contacting the areola.

11. The breast pumping device according to claim 9, wherein the horn cover comprises a contact portion, and the contact portion is installed on the inner extension section for contacting the areola area.

12. The breast pump device according to claim 10, wherein at least a portion of the interference portion of the bell housing is surrounded by the device body.

13. The milking device according to any one of claims 1 to 8, wherein the device body comprises a negative pressure forming unit, a one-way valve and a milk bottle, the negative pressure forming unit having a negative pressure chamber and a gas exchange channel connected to the negative pressure chamber, the milk suction chamber and the milk discharge channel are formed in the negative pressure forming unit, the air pressure state of the negative pressure chamber is positively correlated with the air pressure state of the milk suction chamber, the milk holding chamber is formed in the milk bottle, the one-way valve and the milk bottle are both installed on the negative pressure forming unit, and the milk bottle covers the one-way valve, and the one-way valve is used to control the connection state of the milk discharge channel of the device body.

14. The milking device according to claim 13, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part, the negative pressure forming part is mounted on the supporting shell, the negative pressure chamber is formed between the supporting shell and the negative pressure forming part, the gas exchange channel is provided on the supporting shell, the milk suction chamber and the milk discharge channel are provided on the negative pressure forming part, the one-way valve and the milk bottle are respectively mounted on the negative pressure forming part, wherein at least a part of the negative pressure forming part is deformable so that the air pressure state of the negative pressure chamber is positively correlated with the air pressure state of the milk suction chamber.

15. The milk suction device according to claim 14, wherein the supporting shell comprises a shell body and a trumpet body extending outwardly from one end of the shell body as a whole, the shell body having an installation cavity and an installation opening connected to the installation cavity, wherein the negative pressure forming part comprises a deformation part and a skeleton part, the milk suction cavity and the milk discharge channel are formed in the deformation part, and the skeleton part is combined with the combined end of the deformation part, wherein the skeleton part of the negative pressure forming part is installed in the installation opening of the shell body, the deformation part extends to the installation cavity through the installation opening, and the negative pressure cavity is formed between the deformation part and the shell body, so that the deformation part makes the air pressure state of the negative pressure cavity positively correlated with the air pressure state of the milk suction cavity by deformation.

16. A breast pump, characterized in that include: trachea; Breast pump host; as well as The breast pumping device according to any one of claims 1 to 15, wherein the air tube connects the breast pump host and the breast pumping device.

17. A speaker cover, characterized in that: include: Internal extension; an outer first extension; as well as The invention relates to a reversible outer second extension section, wherein the inner extension section and the outer second extension section extend outwards from opposite sides of the outer first extension section respectively, and the outer first extension section and the outer second extension section have different extension trends.

18. The horn cover according to claim 17, wherein the inner wall of the first external extension section and the inner wall of the second external extension section are both inclined surfaces, and the angle α formed between the inner wall of the first external extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the second external extension section and the central axis of the horn cover; or, the inner wall of the first external extension section and the inner wall of the second external extension section are both concave arc surfaces, and the angle α formed between the line between the opposite sides of the inner wall of the first external extension section and the central axis of the horn cover is greater than the angle β between the line between the opposite sides of the inner wall of the second external extension section and the central axis of the horn cover. Angle β; or, the inner wall of the external first extension section is a sloped surface, the inner wall of the external second extension section is a concave arc surface, and the angle α formed between the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the line between the opposite sides of the inner wall of the external second extension section and the central axis of the horn cover; or, the inner wall of the external first extension section is a concave arc surface, the inner wall of the external second extension section is a sloped surface, and the angle α formed between the line between the opposite sides of the inner wall of the external first extension section and the central axis of the horn cover is greater than the angle β between the inner wall of the external second extension section and the central axis of the horn cover.

19. The speaker cover according to claim 17, wherein the speaker cover is made of a silicone material in one piece.

20. The horn cover according to claim 17, wherein the horn cover comprises a contact portion, the contact portion is formed at a connection position between the outer first extension section and the inner extension section or the contact portion is installed on the inner extension section for contacting the areola area.

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