Breast pump

Abstract

The breast pump comprises a main machine, a feeding bottle, a one-way valve, a bearing shell and a negative pressure generating device, the negative pressure generating device comprises a three-way component and a negative pressure bowl, the three-way component is provided with an air channel opening, a bottom opening and a side opening, the negative pressure bowl is arranged at the air channel opening of the three-way component, and the bottom opening is communicated with the bottom opening. The one-way valve is arranged at the bottom opening of the three-way component, the feeding bottle is installed on the three-way component and covers the one-way valve, the main machine is arranged to be capable of driving the negative pressure bowl to deform repeatedly, and the bearing shell is installed on the three-way component and covers the negative pressure bowl. The bearing shell is used for forming a convex bearing face on the side, back to the side opening, of the three-way component.

Description

Technical Field

[0001] The utility model relates to maternal and infant products, in particular to a breast pump. Background Art

[0002] A breast pump is an essential tool for lactating mothers, which is used to help mothers suck out and store breast milk. In recent years, wearable breast pumps have become popular, which allow lactating mothers to fix the breast pump with the help of an undergarment, so that the hands of the lactating mother can be liberated during the milk sucking process. However, the existing wearable breast pumps have many defects. For example, the shape inside the wearable breast pump does not match the curvature of the undergarment, resulting in uneven pressure exerted by the undergarment on different positions of the wearable breast pump, and further resulting in poor comfort for the user when wearing the wearable breast pump. For another example, the wearable breast pump is prone to slide inside the undergarment, resulting in misalignment of the nipple and the wearable breast pump, and further resulting in the inability to suck milk and even causing harm to the nipple. Summary of the Utility Model

[0003] An object of the utility model is to provide a breast pump, in which after the user wears the breast pump with the help of an undergarment, the pressure exerted by the undergarment on different positions of the breast pump is uniform, so as to improve the comfort of the user when wearing the breast pump.

[0004] An object of the utility model is to provide a breast pump, in which after the user wears the breast pump with the help of an undergarment, the breast pump will not slide down, so as to avoid misalignment of the breast pump relative to the nipple.

[0005] An object of the utility model is to provide a breast pump, in which the surface curvature of the supporting shell of the breast pump matches the curvature of the undergarment. After the user wears the breast pump with the help of an undergarment, the supporting shell and the undergarment are in surface contact, so that the pressure exerted by the undergarment on different positions of the breast pump is uniform, thereby improving the comfort of the user when wearing the breast pump.

[0006] An object of the utility model is to provide a breast pump, in which the bottom of the supporting shell protrudes from the milk bottle of the breast pump. In this way, after the user wears the breast pump with the help of an undergarment, the lower edge of the undergarment can hold up the supporting shell upward to prevent the breast pump from sliding down, thereby avoiding misalignment of the breast pump relative to the nipple.

[0007] According to one aspect of the utility model, the utility model provides a breast pump, which comprises:

[0008] A main body;

[0009] A milk bottle;

[0010] A one-way valve;

[0011] A supporting shell; and

[0012] A negative pressure generating device, wherein the negative pressure generating device includes a three-way component and a negative pressure bowl. The three-way component has an air passage opening, a bottom opening, and a side opening. The negative pressure bowl is disposed at the air passage opening of the three-way component. The one-way valve is disposed at the bottom opening of the three-way component. The milk bottle is installed on the three-way component, and the milk bottle covers the one-way valve. The main body is configured to drive the negative pressure bowl to deform repeatedly. The supporting shell is installed on the three-way component, and the supporting shell is used to form a convex supporting surface on the side of the three-way component opposite to the side opening.

[0013] As a feasible example of the breast pump of the present invention, the supporting shell is detachably installed on the three-way component.

[0014] As a feasible example of the breast pump of the present invention, the supporting shell is integrally formed on the three-way component.

[0015] As a feasible example of the breast pump of the present utility model, on opposite sides of the top of the tee component, there is respectively provided a tee snap projection, and on opposite sides of the top of the support shell, there is respectively provided a shell snap projection. Along the circumferential direction, the distance between the two shell snap projections of the support shell is greater than the distance between the two tee snap projections of the tee component. When the support shell is installed on the tee component, the two shell snap projections of the support shell are respectively blocked by the two tee snap projections of the tee component, wherein along the circumferential direction, the support shell extends in a curved manner so that the support shell has elasticity; or, on opposite sides of the bottom of the tee component, there is respectively provided a tee snap projection, and on opposite sides of the bottom of the support shell, there is respectively provided a shell snap projection. Along the circumferential direction, the distance between the two shell snap projections of the support shell is greater than the distance between the two tee snap projections of the tee component. When the support shell is installed on the tee component, the two shell snap projections of the support shell are respectively blocked by the two tee snap projections of the tee component, wherein along the circumferential direction, the support shell extends in a curved manner so that the support shell has elasticity; or, on opposite sides of the top and opposite sides of the bottom of the tee component, there is respectively provided a tee snap projection, and on opposite sides of the top and opposite sides of the bottom of the support shell, there is respectively provided a shell snap projection. Along the circumferential direction, the distance between the two shell snap projections of the support shell is greater than the distance between the two tee snap projections of the tee component. When the support shell is installed on the tee component, the two shell snap projections on the top of the support shell are respectively blocked by the two tee snap projections on the top of the tee component, and the two shell snap projections on the bottom of the support shell are respectively blocked by the two tee snap projections on the bottom of the tee component, wherein along the circumferential direction, the support shell extends in a curved manner so that the support shell has elasticity.

[0016] As a feasible example of the breast pump of the present utility model, the tee snap projection extends along the height direction on the outer surface of the tee component, wherein the shell snap projection extends along the height direction on the inner surface of the support shell.

[0017] As a feasible example of the breast pump of the present utility model, on opposite sides of the top of the tee component, there is respectively provided a tee positioning groove, and on opposite sides of the top of the support shell, there is respectively provided a shell fastening protrusion. Along the circumferential direction, the distance between the two shell fastening protrusions of the support shell is the same as the distance between the two tee positioning grooves of the tee component. When the support shell is installed on the tee component, the two shell fastening protrusions of the support shell are respectively positioned in the two tee positioning grooves of the tee component, and along the circumferential direction, the support shell extends in a curved manner so that the support shell has elasticity; or, on opposite sides of the bottom of the tee component, there is respectively provided a tee positioning groove, and on opposite sides of the bottom of the support shell, there is respectively provided a shell fastening protrusion. Along the circumferential direction, the distance between the two shell fastening protrusions of the support shell is the same as the distance between the two tee positioning grooves of the tee component. When the support shell is installed on the tee component, the two shell fastening protrusions of the support shell are respectively positioned in the two tee positioning grooves of the tee component, and along the circumferential direction, the support shell extends in a curved manner so that the support shell has elasticity; or, on opposite sides of the top and opposite sides of the bottom of the tee component, there is respectively provided a tee positioning groove, and on opposite sides of the top and opposite sides of the bottom of the support shell, there is respectively provided a shell fastening protrusion. Along the circumferential direction, the distance between the two shell fastening protrusions of the support shell is the same as the distance between the two tee positioning grooves of the tee component. When the support shell is installed on the tee component, the two shell fastening protrusions at the top of the support shell are respectively positioned in the two tee positioning grooves at the top of the tee component, and the two shell fastening protrusions at the bottom of the support shell are respectively positioned in the two tee positioning grooves at the bottom of the tee component, and along the circumferential direction, the support shell extends in a curved manner so that the support shell has elasticity.

[0018] As a feasible example of the breast pump of the present utility model, the breast pump includes a top cover which has a top cover hole. One of the main body and the top cover is selectively installed on the top of the tee component. When the main body is installed on the top of the tee component, a negative pressure chamber is formed between the negative pressure bowl and the main body of the breast pump. When the top cover is installed on the top of the tee component, a negative pressure chamber is formed between the negative pressure bowl and the top cover, and the top cover hole of the top cover communicates with the negative pressure chamber.

[0019] As a feasible example of the breast pump of the present utility model, the breast pump includes a top cover having a top cover hole. The support shell and the top cover are integrated. One of the main body and the top cover is selectively installed on the top of the three-way component. When the main body is installed on the top of the three-way component, a negative pressure chamber is formed between the negative pressure bowl and the main body of the breast pump. When the top cover is installed on the top of the three-way component, the negative pressure chamber is formed between the negative pressure bowl and the top cover. The top cover hole of the top cover communicates with the negative pressure chamber, and the top cover is used to install the support shell on the three-way component.

[0020] As a feasible example of the breast pump of the present utility model, the middle part of the three-way component has a groove extending along the circumferential direction, and the middle parts of the edges on the opposite sides of the support shell respectively correspond to different positions of the groove of the three-way component.

[0021] As a feasible example of the breast pump of the present utility model, the top and bottom of the three-way component respectively have three-way abutting ribs. One of the three-way abutting ribs extends between the two three-way fastening protrusions at the top of the three-way component, and the other three-way abutting rib extends between the two three-way fastening protrusions at the bottom of the three-way component. When the support shell is installed on the three-way component, the three-way abutting rib abuts against the inner surface of the support shell.

[0022] As a feasible example of the breast pump of the present utility model, the top and bottom of the support shell respectively have shell abutting ribs. One of the shell abutting ribs extends between the two shell fastening protrusions at the top of the support shell, and the other shell abutting rib extends between the two shell fastening protrusions at the bottom of the support shell. When the support shell is installed on the three-way component, the shell abutting rib abuts against the outer surface of the three-way component.

[0023] As a feasible example of the breast pump of the present utility model, the bottom of the support shell protrudes from the milk bottle.

[0024] As a feasible example of the breast pump of the present utility model, the breast pump includes an anti-slip part which is arranged on the support shell.

[0025] As a feasible example of the breast pump of the present utility model, the anti-slip part is made of silica gel. Description of the Drawings

[0026] Figures 1 to 3 They are respectively schematic diagrams of different perspectives of the first use state of a breast pump according to a preferred embodiment of the present utility model.

[0027] Figure 4 And Figure 5 are respectively exploded schematic views of different perspectives of the above-mentioned usage states of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0028] Figure 6 And Figure 7 are respectively sectional schematic views of different positions of the above-mentioned usage states of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0029] Figure 8 is a schematic view of the second usage state of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0030] Figure 9 is a three-dimensional schematic view of a partial position of the above-mentioned usage state of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0031] Figure 10 is a sectional schematic view of a partial position of the above-mentioned usage state of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0032] Figure 11 is a schematic view of the breast pump when worn by a user according to the above-mentioned preferred embodiment of the present utility model.

[0033] Figure 12 is Figure 11 an enlarged view of a partial position.

[0034] Figure 13 is an exploded schematic view of a variant example of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0035] Figure 14 is a three-dimensional schematic view of a variant example of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0036] Figure 15 And Figure 16 are respectively three-dimensional schematic views of different perspectives of a variant example of the breast pump according to the above-mentioned preferred embodiment of the present utility model.

[0037] Figure 17 is a sectional schematic view of the above-mentioned variant example of the breast pump. Detailed implementation manners

[0038] Before describing any embodiments of the present invention in detail, it should be understood that the present invention is not limited in its application to the details of the construction and arrangement of the components described in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and of being practiced or carried out in various ways. Additionally, it should be understood that the language and terminology used herein are for the purpose of description and should not be regarded as limiting. As used herein, the terms "comprising," "comprises," or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted," "connected," "supported," and "coupled" and their variants are used broadly and cover both direct and indirect mounting, connection, support, and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0039] And, on the one hand, in the disclosure of the present invention, the orientation or positional relationship indicated by the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention; on the other hand, the term "a" should be understood as "at least one" or "one or more." That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as limiting the quantity.

[0040] Referring to the accompanying Figures 1 to 12 drawings of the present invention, a breast pump according to a preferred embodiment of the present invention will be disclosed and described hereinafter, wherein the breast pump includes a negative pressure generating device 10, a one-way valve 20, a milk bottle 30, and a main body 40.

[0041] Specifically, the negative pressure generating device 10 includes a three-way member 11 and a negative pressure bowl 12. The three-way member 11 has an air inlet 111, a bottom opening 112, and a side opening 113. The negative pressure bowl 12 is disposed at the air inlet 111 of the three-way member 11. The one-way valve 20 is disposed at the bottom opening 112 of the three-way member 11. The milk bottle 30 is mounted on the three-way member 11, and the milk bottle 30 covers the one-way valve 20. The main body 40 is configured to drive the negative pressure bowl 12 to deform repeatedly.

[0042] Further, the top of the tee component 11 has an annular support platform 1101 and an installation cavity 1102 formed by the support platform 1101. The airway port 111 of the tee component 11 communicates with the installation cavity 1102. The edge of the negative pressure bowl 12 is rested on the top of the support platform 1101 of the tee component 11, and the main body part of the negative pressure bowl 12 sinks into the installation cavity 1102 of the tee component 11. In this way, the negative pressure bowl 12 is installed at the airway port 111 of the tee component 11. A bell cover 1103 is provided on the side of the tee component 11. The bell cover 1103 extends outward from the edge of the side opening 113 of the tee component 11, and the shape of the bell cover 1103 is similar to the shape of a breast to facilitate accommodating a part of the breast.

[0043] Refer to the attached Figure 11 Moreover, the bell cover 1103 of the tee component 11 can be installed on a flexible pad 120, and the pad 120 is used to isolate the breast from the bell cover 1103 of the tee component 11 to improve comfort.

[0044] For example, in the usage state shown in the attached Figures 1 to 7 figure, the main unit 40 is installed on the top of the tee component 11, and a negative pressure cavity 50 is formed between the negative pressure bowl 12 and the main unit 40 of the breast pump. When the breast closes the side opening 113 of the tee component 11, when the main unit 40 pumps out the air in the negative pressure cavity 50, since the air pressure in the negative pressure cavity 50 decreases, the bottom of the negative pressure bowl 12 deforms upward. At this time, the air pressure inside the tee component 11 decreases, so that the one-way valve 20 closes the bottom opening 112 of the tee component 11 and sucks out the milk and temporarily stores it inside the tee component 11. When the main unit 40 allows the negative pressure cavity 50 to intake air, since the air pressure in the negative pressure cavity 50 increases, the bottom of the negative pressure bowl 12 deforms downward. At this time, the air pressure inside the tee component 11 increases, so that the one-way valve 20 opens the bottom opening 112 of the tee component 11 to allow the milk temporarily stored inside the tee component 11 to enter the milk bottle 30. Repeating this process, the breast pump can help the user to pump milk.

[0045] Attached Figures 8 to 11Fig. 0 shows another usage state of the breast pump of the present utility model, that is, the breast pump allows the main body 40 to be independent of the three-way component 11. Specifically, the breast pump further includes a top cover 60 having a top cover hole 61. When the top cover 60 is mounted on the top of the three-way component 11, a negative pressure chamber 50 is formed between the negative pressure bowl 12 and the top cover 60 of the breast pump, and the top cover hole 61 of the top cover 60 communicates with the negative pressure chamber 50, wherein the top cover hole 61 of the top cover 60 can communicate with the main body 40. In the case where the breast closes the side opening 113 of the three-way component 11, when the main body 40 pumps out the air in the negative pressure chamber 50, since the air pressure in the negative pressure chamber 50 decreases, the bottom of the negative pressure bowl 12 deforms upward. At this time, the air pressure inside the three-way component 11 decreases, so that the one-way valve 20 closes the bottom opening 112 of the three-way component 11 and sucks out the milk and temporarily stores it inside the three-way component 11. When the main body 40 allows the negative pressure chamber 50 to intake air, since the air pressure in the negative pressure chamber 50 increases, the bottom of the negative pressure bowl 12 deforms downward. At this time, the air pressure inside the three-way component 11 increases, so that the one-way valve 20 opens the bottom opening 112 of the three-way component 11 to allow the milk temporarily stored inside the three-way component 11 to enter the milk bottle 30. Repeating this process, the breast pump can help the user to pump milk.

[0046] That is to say, one of the main body 40 and the top cover 60 is selectively mounted on the top of the three-way component 11. In other words, the user can choose to mount the main body 40 on the top of the three-way component 11 according to needs, or choose to mount the top cover 60 on the top of the three-way component 11. When the user chooses to mount the top cover 60 on the top of the three-way component 11, in order to facilitate the connection between the top cover hole 61 of the top cover 60 and the main body 40, the breast pump of the present utility model further includes a base 70 and at least one air tube 80. The base 70 has at least one base hole 71. After the main body 40 is disassembled from the top of the three-way component 11, it can be mounted on the base 70. After the main body 40 is mounted on the base 70, a conversion chamber 90 is formed between the main body 40 and the base 70 of the breast pump, and the base hole 71 of the base 70 communicates with the conversion chamber 90. The two opposite ends of the air tube 80 are respectively connected to the top cover hole 61 of the top cover 60 and the base hole 71 of the base 70. In this way, the main body 40 is configured to drive the negative pressure bowl 12 to deform repeatedly.

[0047] It can be understood that, compared with the usage mode of directly installing the host 40 on the top of the three-way component 11, the usage mode of installing the top cover 60 on the top of the three-way component 11 can make the assembled body formed by the negative pressure generating device 10, the one-way valve 20, the milk bottle 30 and the top cover 60 smaller in size and lighter in weight, so as to facilitate the user to wear the assembled body with the help of the underwear 1000. In the present invention, the negative pressure generating device 10 and the top cover 60 are placed between the breast and the underwear 1000, and the milk bottle 30 is suspended below the breast. In this way, the negative pressure generating device 10 does not overly support the underwear 1000 outward, and the underwear 1000 does not exert a large pressure on the breast through the negative pressure generating device 10, thus avoiding burdening the breast.

[0048] Furthermore, the breast pump includes a supporting shell 100, the supporting shell 100 is installed on the three-way component 11, and the supporting shell 100 forms a convex supporting surface 101 on the side of the three-way component 11 opposite to the side opening 113, which makes the surface curvature of the supporting shell 100 match the curvature of the underwear 1000. Thus, after the user wears the breast pump with the help of the underwear 1000, the supporting shell 100 and the underwear 1000 are in surface contact, so that the pressures exerted by the underwear 1000 on different positions of the breast pump are uniform, thereby improving the comfort of the user when wearing the breast pump.

[0049] Reference appendix Figure 11 and Figure 12 , the bottom of the supporting shell 100 protrudes from the milk bottle 30. In this way, after the user wears the breast pump with the help of the underwear 1000, the lower edge of the underwear 1000 can upwardly hold the supporting shell 100 to prevent the breast pump from sliding down, thereby avoiding the misalignment of the breast pump relative to the nipple, which is crucial for ensuring the smoothness of the milk sucking process and avoiding harm to the nipple.

[0050] In the appendix Figures 1 to 12 shown in this specific example of the breast pump of the present invention, the supporting shell 100 is detachably installed on the three-way component 11, which enables the user to detach the supporting shell 100 from the three-way component 11 when the breast pump is in the usage state shown in the appendix Figures 1 to 7 shown, so as to expose the side of the three-way component 11 opposite to the side opening 113. Of course, when the supporting shell 100 is installed on the three-way component 11, the breast pump can also be in the usage state shown in the appendix Figures 1 to 7 shown. When the breast pump is in the usage state shown in the appendix Figures 8 to 11When in the shown usage state, the user can install the supporting shell 100 on the three-way component 11. In this way, the supporting shell 100 can form the convex supporting surface 101 on the side of the three-way component 11 opposite to the side opening 113, so as to make the arc of the supporting shell 100 match the arc of the underwear 1000. Thus, after the user wears the breast pump with the help of the underwear 1000, the supporting shell 100 and the underwear 1000 are in surface contact, so that the pressure exerted by the underwear 1000 on different positions of the breast pump is uniform, thereby improving the comfort of the user when wearing the breast pump.

[0051] Optionally, in other specific examples of the breast pump of the present invention, the supporting shell 100 and the three-way component 11 may also be an integral structure, that is, the supporting shell 100 is integrally formed on the three-way component 11.

[0052] Refer to the attached Figure 4 、 Figure 5 and Figure 7 As shown in the figures, on the opposite sides of the top and the opposite sides of the bottom of the three-way component 11, there are respectively provided a three-way fastening protrusion 114, and on the opposite sides of the top and the opposite sides of the bottom of the supporting shell 100, there are respectively provided a shell fastening protrusion 102. Along the circumferential direction, the distance between the two shell fastening protrusions 102 of the supporting shell 100 is greater than the distance between the two three-way fastening protrusions 114 of the three-way component 11. When the supporting shell 100 is installed on the three-way component 11, the two shell fastening protrusions 102 at the top of the supporting shell 100 are respectively blocked by the two three-way fastening protrusions 114 at the top of the three-way component 11, and the two shell fastening protrusions 102 at the bottom of the supporting shell 100 are respectively blocked by the two three-way fastening protrusions 114 at the bottom of the three-way component 11. In this way, the supporting shell 100 can be reliably installed on the three-way component 11.

[0053] Specifically, along the circumferential direction, the supporting shell 100 extends in a curved manner, which endows the supporting shell 100 with elasticity. When installing the supporting shell 100, first, on the side of the three-way component 11 facing away from the side opening 113, allow the two shell engaging protrusions 102 on the opposite sides of the top of the supporting shell 100 to respectively align with the two three-way engaging protrusions 114 on the top of the three-way component 11, and the two shell engaging protrusions 102 on the opposite sides of the bottom of the supporting shell 100 to respectively align with the two three-way engaging protrusions 114 on the bottom of the three-way component 11; second, push the supporting shell 100 towards the position where the three-way component 11 is located. When each shell engaging protrusion 102 of the supporting shell 100 crosses each three-way engaging protrusion 114 of the three-way component 11, each three-way engaging protrusion 114 of the three-way component 11 pushes each shell engaging protrusion 102 of the supporting shell 100 in a direction perpendicular to the circumferential direction, so that the supporting shell 100 deforms and stores elastic potential energy. After each shell engaging protrusion 102 of the supporting shell 100 crosses each three-way engaging protrusion 114 of the three-way component 11, the supporting shell 100 returns to its initial state, allowing the two shell engaging protrusions 102 on the top of the supporting shell 100 to be respectively blocked by the two three-way engaging protrusions 114 on the top of the three-way component 11 and allowing the two shell engaging protrusions 102 on the bottom of the supporting shell 100 to be respectively blocked by the two three-way engaging protrusions 111 on the bottom of the three-way component 11, thereby installing the supporting shell 100 on the three-way component 11. When it is necessary to disassemble the supporting shell 100 from the three-way component 11, just apply an outward force by holding any one of the opposite sides of the supporting shell 100, and the disassembly of the supporting shell 100 can be achieved. To facilitate applying force to the side of the supporting shell 100, in this specific example of the breast pump of the present utility model, the middle part of the three-way component 11 has a groove 115 extending along the circumferential direction, and the middle parts of the edges of the opposite sides of the supporting shell 100 respectively correspond to different positions of the groove 115 of the three-way component 11.

[0054] Optionally, in other examples of the breast pump of the present utility model, the breast pump may be provided with only one three-way engaging protrusion 114 on each of the opposite sides of the top of the three-way component 11. Correspondingly, the supporting shell 100 is provided with only one shell engaging protrusion 102 on each of the opposite sides of the top. Or, the breast pump may be provided with only one three-way engaging protrusion 114 on each of the opposite sides of the bottom of the three-way component 11. Correspondingly, the supporting shell 100 is provided with only one shell engaging protrusion 102 on each of the opposite sides of the bottom.

[0055] In the appendix Figures 1 to 12In this specific example of the breast pump of the present utility model shown, the tee fastening protrusion 114 extends along the height direction on the outer surface of the tee member 11, and the housing fastening protrusion 102 extends along the height direction on the inner surface of the support housing 100. In this way, the tee fastening protrusion 114 of the tee member 11 and the housing fastening protrusion 102 of the support housing 100 can be firmly fastened to reliably mount the support housing 100 on the tee member 11.

[0056] Refer to the attached Figures 4 to 7 The top and bottom of the tee member 11 are respectively provided with tee abutting ribs 116. One tee abutting rib 116 extends between the two tee fastening protrusions 114 at the top of the tee member 11, and the other tee abutting rib 116 extends between the two tee fastening protrusions 114 at the bottom of the tee member 11. When the support housing 100 is mounted on the tee member 11, the tee abutting rib 116 abuts against the inner surface of the support housing 100 to prevent the support housing 100 mounted on the tee member 11 from deforming towards the direction close to the tee member 11 when subjected to the pressure of the underwear 1000.

[0057] Preferably, the top and bottom of the support housing 100 are respectively provided with housing abutting ribs 103. One housing abutting rib 103 extends between the two housing fastening protrusions 102 at the top of the support housing 100, and the other housing abutting rib 103 extends between the two housing fastening protrusions 102 at the bottom of the support housing 100. When the support housing 100 is mounted on the tee member 11, the housing abutting rib 103 abuts against the outer surface of the tee member 11 to prevent the support housing 100 mounted on the tee member 11 from deforming towards the direction close to the tee member 11 when subjected to the pressure of the underwear 1000.

[0058] The attached Figure 13 shows a variant example of the breast pump according to the above preferred embodiment of the present utility model. Different from the breast pump shown in the attached Figures 1 to 12 shown, in the attached Figure 13In this specific example of the breast pump shown, on opposite sides of the top and bottom of the three-way component 11, there is respectively provided a three-way positioning groove 117. On opposite sides of the top and bottom of the support shell 100, there is respectively provided a shell fastening protrusion 102. Along the circumferential direction, the distance between the two shell fastening protrusions 102 of the support shell 100 is the same as the distance between the two three-way positioning grooves 117 of the three-way component 11. When the support shell 100 is installed on the three-way component 11, the two shell fastening protrusions 102 at the top of the support shell 100 are respectively positioned in the two three-way positioning grooves 117 at the top of the three-way component 11, and the two shell fastening protrusions 102 at the bottom of the support shell 100 are respectively positioned in the two three-way positioning grooves 117 at the bottom of the three-way component 11. In this way, the support shell 100 can be reliably installed on the three-way component 11.

[0059] Optionally, in other examples of the breast pump of the present utility model, the breast pump may only have a three-way positioning groove 117 provided on opposite sides of the top of the three-way component 11 respectively. Correspondingly, the support shell 100 only has a shell fastening protrusion 102 provided on opposite sides of the top. Or, the breast pump may only have a three-way positioning groove 117 provided on opposite sides of the bottom of the three-way component 11 respectively. Correspondingly, the support shell 100 only has a shell fastening protrusion 102 provided on opposite sides of the bottom.

[0060] Attached Figure 14 shows a variant example of the breast pump according to the above preferred embodiment of the present utility model. Different from the breast pump shown in Attached Figures 1 to 12 In the specific example of the breast pump shown in Attached Figure 14 In this specific example of the breast pump shown, the breast pump includes an anti-slip portion 110. The anti-slip portion 110 is provided on the support shell 100. When the user wears the breast pump with the help of the underwear 1000, the anti-slip portion 110 is in direct contact with the underwear 1000, and there is a large frictional force between the two to prevent the breast pump from sliding down, thereby avoiding the misalignment of the breast pump relative to the nipple, which is crucial for ensuring the smoothness of the milk pumping process and avoiding damage to the nipple. Preferably, the anti-slip portion 110 is made of silicone material.

[0061] It is worth mentioning that the specific manner in which the anti-slip portion 110 is provided on the support shell 100 is not limited in the breast pump of the present utility model. For example, in Attached Figure 14In this specific example of the breast pump of the present utility model shown, the anti-slip portion 110 is formed on the support shell 100 through a two-shot molding process to dispose the anti-slip portion 110 on the support shell 100. Optionally, in other examples of the breast pump of the present utility model, the anti-slip portion 110 can be adhered to the support shell 100 with glue to dispose the anti-slip portion 110 on the support shell 100.

[0062] Appendix Figures 15 to 17 Fig. shows a modified example of the breast pump according to the above preferred embodiment of the utility model. Different from the breast pump shown in the appendix Figures 1 to 12 shown, in the appendix Figures 15 to 17 In this specific example of the breast pump shown, the top cover 60 and the support shell 100 are integrated. In this way, when the top cover 60 is installed on the top of the tee member 11, the top cover 60 installs the support shell 100 on the side of the tee member 11, so that the support shell 100 forms the convex support surface 101 on the side of the tee member 11 facing away from the side opening 113.

[0063] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the drawings are only examples and do not limit the present utility model. The object of the present utility model has been fully and effectively achieved. The functions and structural principles of the present utility model have been shown and described in the embodiments. Without departing from the principle, any deformation or modification can be made to the embodiments of the present utility model.

Claims

1. Breast pump, characterized in that, Comprising: A main body; A milk bottle; A one-way valve; A supporting shell; And A negative pressure generating device, wherein the negative pressure generating device includes a three-way component and a negative pressure bowl. The three-way component has an airway opening, a bottom opening, and a side opening. The negative pressure bowl is disposed at the airway opening of the three-way component. The one-way valve is disposed at the bottom opening of the three-way component. The milk bottle is installed on the three-way component and the milk bottle covers the one-way valve. The main body is configured to drive the negative pressure bowl to deform repeatedly. The supporting shell is installed on the three-way component and the supporting shell is used to form a convex supporting surface on a side of the three-way component opposite to the side opening.

2. The breast pump according to claim 1, wherein the supporting shell is detachably installed on the three-way component.

3. The breast pump according to claim 1, wherein the supporting shell is integrally formed with the three-way component.

4. The breast pump according to claim 2, wherein on opposite sides of the top of the three-way component, there are respectively provided a three-way snap projection. On opposite sides of the top of the supporting shell, there are respectively provided a shell snap projection. Along the circumferential direction, the distance between the two shell snap projections of the supporting shell is greater than the distance between the two three-way snap projections of the three-way component. When the supporting shell is installed on the three-way component, the two shell snap projections of the supporting shell are respectively blocked by the two three-way snap projections of the three-way component. Wherein along the circumferential direction, the supporting shell extends in a curved manner so that the supporting shell has elasticity; Or, on opposite sides of the bottom of the three-way component, there are respectively provided a three-way snap projection. On opposite sides of the bottom of the supporting shell, there are respectively provided a shell snap projection. Along the circumferential direction, the distance between the two shell snap projections of the supporting shell is greater than the distance between the two three-way snap projections of the three-way component. When the supporting shell is installed on the three-way component, the two shell snap projections of the supporting shell are respectively blocked by the two three-way snap projections of the three-way component. Wherein along the circumferential direction, the supporting shell extends in a curved manner so that the supporting shell has elasticity; Or, on opposite sides of the top and opposite sides of the bottom of the three-way component, there are respectively provided a three-way snap projection. On opposite sides of the top and opposite sides of the bottom of the supporting shell, there are respectively provided a shell snap projection. Along the circumferential direction, the distance between the two shell snap projections of the supporting shell is greater than the distance between the two three-way snap projections of the three-way component. When the supporting shell is installed on the three-way component, the two shell snap projections at the top of the supporting shell are respectively blocked by the two three-way snap projections at the top of the three-way component, and the two shell snap projections at the bottom of the supporting shell are respectively blocked by the two three-way snap projections at the bottom of the three-way component. Wherein along the circumferential direction, the supporting shell extends in a curved manner so that the supporting shell has elasticity.

5. The breast pump according to claim 4, wherein the tee fastening protrusion extends along the height direction on the outer surface of the tee component, and the housing fastening protrusion extends along the height direction on the inner surface of the support housing.

6. The breast pump according to claim 2, wherein a tee positioning groove is respectively provided on opposite sides of the top of the tee component, and a housing fastening protrusion is respectively provided on opposite sides of the top of the support housing. Along the circumferential direction, the distance between the two housing fastening protrusions of the support housing is the same as the distance between the two tee positioning grooves of the tee component. When the support housing is installed on the tee component, the two housing fastening protrusions of the support housing are respectively positioned in the two tee positioning grooves of the tee component. Along the circumferential direction, the support housing extends curvedly so that the support housing has elasticity; Alternatively, a tee positioning groove is respectively provided on opposite sides of the bottom of the tee component, and a housing fastening protrusion is respectively provided on opposite sides of the bottom of the support housing. Along the circumferential direction, the distance between the two housing fastening protrusions of the support housing is the same as the distance between the two tee positioning grooves of the tee component. When the support housing is installed on the tee component, the two housing fastening protrusions of the support housing are respectively positioned in the two tee positioning grooves of the tee component. Along the circumferential direction, the support housing extends curvedly so that the support housing has elasticity; Alternatively, a tee positioning groove is respectively provided on opposite sides of the top and bottom of the tee component, and a housing fastening protrusion is respectively provided on opposite sides of the top and bottom of the support housing. Along the circumferential direction, the distance between the two housing fastening protrusions of the support housing is the same as the distance between the two tee positioning grooves of the tee component. When the support housing is installed on the tee component, the two housing fastening protrusions at the top of the support housing are respectively positioned in the two tee positioning grooves at the top of the tee component, and the two housing fastening protrusions at the bottom of the support housing are respectively positioned in the two tee positioning grooves at the bottom of the tee component. Along the circumferential direction, the support housing extends curvedly so that the support housing has elasticity.

7. The breast pump according to claim 1, wherein the breast pump includes a top cover having a top cover hole, and one of the main body and the top cover is selectively installed on the top of the tee component. When the main body is installed on the top of the tee component, a negative pressure chamber is formed between the negative pressure bowl and the main body of the breast pump. When the top cover is installed on the top of the tee component, the negative pressure chamber is formed between the negative pressure bowl and the top cover, and the top cover hole of the top cover communicates with the negative pressure chamber.

8. The breast pump according to claim 2, wherein the breast pump includes a top cover having a top cover hole, the support shell and the top cover are integrated, and one of the main body and the top cover is selectively installed on the top of the three-way component. When the main body is installed on the top of the three-way component, the breast pump forms a negative pressure chamber between the negative pressure bowl and the main body. When the top cover is installed on the top of the three-way component, the breast pump forms the negative pressure chamber between the negative pressure bowl and the top cover, and the top cover hole of the top cover communicates with the negative pressure chamber, and the top cover is used to install the support shell on the three-way component.

9. The breast pump according to claim 4, 5 or 6, wherein the middle of the three-way component has a groove extending along the circumferential direction, and the middle parts of the edges on the opposite sides of the support shell respectively correspond to different positions of the groove of the three-way component.

10. The breast pump according to claim 4 or 5, wherein the top and bottom of the three-way component respectively have three-way abutting ribs. One of the three-way abutting ribs extends between the two three-way fastening protrusions at the top of the three-way component, and the other three-way abutting rib extends between the two three-way fastening protrusions at the bottom of the three-way component. When the support shell is installed on the three-way component, the three-way abutting rib abuts against the inner surface of the support shell.

11. The breast pump according to claim 4, 5 or 6, wherein the top and bottom of the support shell respectively have shell abutting ribs. One of the shell abutting ribs extends between the two shell fastening protrusions at the top of the support shell, and the other shell abutting rib extends between the two shell fastening protrusions at the bottom of the support shell. When the support shell is installed on the three-way component, the shell abutting rib abuts against the outer surface of the three-way component.

12. The breast pump according to any one of claims 1 to 8, wherein the bottom of the support shell protrudes from the milk bottle.

13. The breast pump according to any one of claims 1 to 8, wherein the breast pump includes an anti-slip portion, and the anti-slip portion is provided on the support shell.

14. The breast pump according to claim 13, wherein the anti-slip portion is made of silica gel.

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