Breast pump and breast pumping device thereof

Abstract

The breast pump comprises a one-way valve, a flexible breast cover and a negative pressure forming unit, the breast cover comprises a shoulder ring body, an assembly ring body and a horn cover body, the assembly ring body integrally extends towards one side from the inner edge of the shoulder ring body, and the horn cover body is connected with the assembly ring body. The horn cover body integrally extends in the opposite direction from the outer edge of the shoulder ring body, the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and is provided with a negative pressure cavity, the negative pressure forming part is installed on the supporting shell so that the negative pressure cavity can be formed between the negative pressure forming part and the supporting shell, the supporting shell is provided with a gas exchange channel, and the gas exchange channel is communicated with the negative pressure cavity. The air exchange channel is communicated with the negative pressure cavity, the negative pressure forming part is provided with a milk sucking cavity, an assembling opening and a milk discharging channel, the assembling opening and the milk discharging channel are respectively communicated with the milk sucking cavity, the one-way valve is arranged on the negative pressure forming part so as to selectively open and close the milk discharging channel, and the assembling ring body is assembled on the assembling opening.

Description

Technical Field

[0001] The utility model relates to a breast pump, belonging to the field of maternal and infant products, and in particular to a breast pump and a milk suction device thereof. Background Art

[0002] A breast pump is a breast pump that can be placed in a bra. The bra is used to fix the breast pump to the breast. In this way, the mother can free her hands during the milking process and can even walk around freely. Therefore, breast pumps have become increasingly popular in recent years. The brassiere of existing breast pumps is integrally fitted to the main unit. The angle of the brassiere is always the same as the angle of the main unit. The mother needs to change the angle of the brassiere by adjusting the angle of the main unit. Due to the weight angle of the main unit, and as the milking process proceeds, the weight of the milk acts on the main unit, causing its weight to further increase and causing the main unit to slide down. The sliding of the main unit will inevitably cause the angle of the brassiere to change and dislocate, and even fall off from the breast, leading to milk leakage. How to make the brassiere of the breast pump stably fit the mother's breast is a technical problem that the inventor of the utility model is committed to solving. Utility Model Content

[0003] One object of the utility model is to provide a breast pump and a milk-sucking device thereof, wherein during the milk-sucking process, the bra of the milk-sucking device can be reliably fitted to the mother's breast.

[0004] One object of the utility model is to provide a breast pump and a milk-sucking device thereof, wherein after the horn cover body of the bra is fitted to the mother's breast, when the assembly ring body of the bra is changed as the position of the negative pressure forming unit is changed, the shoulder ring body of the bra can be deformed to prevent the horn cover body from changing as the position of the negative pressure forming unit is changed, so that the bra can reliably fit the mother's breast during the milk-sucking process.

[0005] One object of the utility model is to provide a breast pump and a milk-sucking device thereof, wherein the bra can be detached, so that, on the one hand, the bra can be cleaned separately to improve the hygiene of the milk-sucking device, and on the other hand, the mother can choose a suitable bra as needed to meet personalized needs.

[0006] One object of the utility model is to provide a breast pump and a milk pumping device thereof, wherein when the bra is mounted on the negative pressure forming unit, the bra can be limited so that there is a gap between the shoulder ring and the negative pressure forming unit, so that when the assembly ring changes with the position of the negative pressure forming unit, the shoulder ring can be deformed. In addition, by limiting the position of the bra, it is possible to avoid the assembly ring blocking the milk discharge channel of the negative pressure forming unit, so as to facilitate milk discharge.

[0007] One object of the utility model is to provide a breast pump and a milk suction device thereof, wherein the milk suction device has a smaller size, so that when a mother fixes the milk suction device on a breast through a bra, the milk suction device will not excessively push the bra outwards, and at the same time, the pressure applied by the bra to the breast through the milk suction device will also be reduced, thereby improving the comfort of the mother when sucking milk through the milk suction device.

[0008] According to one aspect of the utility model, the utility model provides a breast pump, which includes:

[0009] Breast pump host;

[0010] Breast pumping devices; and

[0011] An air tube, wherein the opposite ends of the air tube are respectively connected to the breast pump host and the milk suction device, wherein the milk suction device further comprises:

[0012] One-way valve;

[0013] A flexible bra, wherein the bra comprises a shoulder ring, a fitting ring and a trumpet cover, wherein the fitting ring integrally extends from the inner edge of the shoulder ring to one side, and the trumpet cover integrally extends from the outer edge of the shoulder ring to the opposite direction; and

[0014] A negative pressure forming unit, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and has a negative pressure chamber, 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 supporting shell has a gas exchange channel, the gas exchange channel is connected to the negative pressure chamber, the negative pressure forming part has a milk suction chamber and an assembly opening and a milk discharge passage respectively connected to the milk suction chamber, wherein the one-way valve is arranged on the negative pressure forming part to selectively open and close the milk discharge passage, wherein the assembly ring body of the bra is assembled on the assembly opening of the negative pressure forming part.

[0015] According to an embodiment of the present invention, the assembly ring of the bra is detachably assembled to the assembly opening of the negative pressure forming portion.

[0016] According to an embodiment of the utility model, the assembly ring of the bra extends through the assembly opening of the negative pressure forming part to the outside of the milk discharge channel of the negative pressure forming part to form a step.

[0017] According to an embodiment of the utility model, the bra comprises a limiting portion, which integrally extends from the peripheral wall of the assembly ring body in a direction perpendicular to the extension direction of the assembly ring body, and a gap is provided between the limiting portion and the shoulder ring body.

[0018] According to one embodiment of the utility model, the negative pressure forming portion has an embedding groove, which is located on the outside of the assembly opening, and the limiting portion has an embedding protrusion, the shape and size of the embedding protrusion match the shape and size of the embedding groove, wherein the embedding protrusion of the limiting portion is embedded in the embedding groove of the negative pressure forming portion.

[0019] According to one embodiment of the utility model, the support shell includes a shell body and a trumpet body extending outward integrally from one end of the shell body, the shell body having an installation cavity and an installation opening connected to the installation cavity, wherein the negative pressure forming part includes a deformation part and a skeleton part, the deformation part has a combining end and a deformation end corresponding to the combining end, the milk suction cavity, the assembly opening and the milk discharge channel of the negative pressure forming part 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 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.

[0020] According to an embodiment of the present invention, the negative pressure forming portion is detachably mounted on the supporting shell.

[0021] According to an embodiment of the utility model, the milk pump device further includes a ball head plunger, the ball head plunger includes a column part, a compression spring and a ball head part, the column part has a column cavity and a cavity opening connected to the column cavity, the compression spring is compressibly arranged in the column cavity of the column part, the ball head part is movably arranged in the cavity opening of the column part, and the bottom of the ball head part abuts against the compression spring, and the top of the ball head part protrudes from the column part, wherein the column part of the ball head plunger is fixedly mounted on the shell body of the support shell, and the ball head part protrudes from the mounting cavity of the shell body, wherein the outer side of the skeleton part of the negative pressure forming part has a retaining groove, when the negative pressure forming part is mounted on the support shell, the ball head part is retained in the retaining groove of the skeleton part, and the friction force generated between the ball head part and the peripheral wall of the skeleton part for forming the retaining groove prevents the negative pressure forming part from falling off from the support shell.

[0022] According to one embodiment of the utility model, the milk pumping device further includes an air duct unit, which includes an air guide seat and a reversing seat, wherein the air guide seat has a first air duct extending laterally and a bottom socket and a top socket respectively connected to the first air duct, the top of the shell body of the supporting shell has a shell insertion arm, and the opening of the gas exchange channel is formed at the end face of the shell insertion arm, and the air guide seat is arranged at the top of the shell body in such a way that the shell insertion arm is inserted into the bottom socket, wherein the reversing seat has a bottom insertion arm, a side insertion arm and a second air duct, one opening of the second air duct is formed at the end face of the bottom insertion arm, and the other opening is formed at the end face of the side insertion arm, and the bottom insertion arm of the reversing seat is inserted into the top socket of the air guide seat.

[0023] According to an embodiment of the utility model, the bottom insertion arm of the reversing seat is detachably inserted into the top insertion hole of the air guide seat.

[0024] According to one embodiment of the utility model, the negative pressure forming unit includes an outer cover shell and a receiving cavity, the outer cover shell has a positioning hole, the outer cover shell is fixedly mounted on the outer edge of the horn body of the supporting shell to form the receiving cavity between the supporting shell and the outer cover shell, the positioning hole of the outer cover shell is connected to the receiving cavity, wherein the air guide seat has a top boss, and the opening of the top jack is formed on the end surface of the top boss, wherein the air guide seat is received in the receiving cavity of the negative pressure forming unit, and the top boss of the air guide seat extends to the positioning hole of the outer cover shell.

[0025] According to an embodiment of the utility model, the top of the shell body of the support shell has a positioning wall, the positioning wall surrounds the bottom of the air guide seat, and the inner wall of the positioning wall is in contact with the outer wall of the air guide seat.

[0026] According to one embodiment of the utility model, the outer cover shell includes an outer shell and an anti-detachment cover, the positioning hole is formed in the anti-detachment cover, the outer shell has a shell channel, the anti-detachment cover is fixedly installed on the shell channel of the outer shell, wherein the outer shell is fixedly installed on the outer edge of the speaker body of the supporting shell.

[0027] According to one embodiment of the utility model, the bottom of the shell body of the supporting shell has a mounting notch, the bottom of the skeleton part has an internal mounting arm and an external mounting arm surrounding the internal mounting arm, an opening of the milk discharge channel is formed on the end surface of the internal mounting arm, the external mounting arm is held in the mounting notch of the shell body, wherein the one-way valve is mounted on the internal mounting arm, wherein the milk suction device further includes a milk bottle, and the milk bottle is mounted on the external mounting arm.

[0028] According to one embodiment of the utility model, the external mounting arm has a clamping groove extending in the circumferential direction and a guide groove extending in the height direction and connected to one end of the clamping groove, and the bottle mouth of the milk bottle has a clamping protrusion, and the clamping protrusion of the milk bottle can slide into the clamping groove through the guide groove of the external mounting arm.

[0029] According to another aspect of the present invention, the present invention provides a breast pumping device, comprising:

[0030] One-way valve;

[0031] A flexible bra, wherein the bra comprises a shoulder ring, a fitting ring and a trumpet cover, wherein the fitting ring integrally extends from the inner edge of the shoulder ring to one side, and the trumpet cover integrally extends from the outer edge of the shoulder ring to the opposite direction; and

[0032] A negative pressure forming unit, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and has a negative pressure chamber, 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 supporting shell has a gas exchange channel, the gas exchange channel is connected to the negative pressure chamber, the negative pressure forming part has a milk suction chamber and an assembly opening and a milk discharge passage respectively connected to the milk suction chamber, wherein the one-way valve is arranged on the negative pressure forming part to selectively open and close the milk discharge passage, wherein the assembly ring body of the bra is assembled on the assembly opening of the negative pressure forming part.

[0033] According to an embodiment of the present invention, the assembly ring of the bra extends through the assembly opening of the negative pressure forming part to the outside of the milk discharge channel of the negative pressure forming part to form a step;

[0034] The bra comprises a limiting portion, wherein the limiting portion integrally extends from the peripheral wall of the mounting ring body in a direction perpendicular to the extending direction of the mounting ring body, and a gap is provided between the limiting portion and the shoulder ring body;

[0035] The negative pressure forming part has an embedding groove, which is located on the outside of the assembly opening, and the limiting part has an embedding protrusion, the shape and size of the embedding protrusion match the shape and size of the embedding groove, wherein the embedding protrusion of the limiting part is embedded in the embedding groove of the negative pressure forming part.

[0036] According to an embodiment of the utility model, the support shell includes a shell body and a horn body integrally extending outward from one end of the shell body, the shell body has an installation cavity and an installation opening connected to the installation cavity, wherein the negative pressure forming part includes a deformation part and a skeleton part, the deformation part has a combination end and a deformation end corresponding to the combination end, the milk suction cavity, the assembly opening and the milk discharge channel of the negative pressure forming part are formed in the deformation part, the skeleton part is combined with the combination 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;

[0037] wherein the negative pressure forming portion is detachably mounted on the supporting shell;

[0038] The milk suction device further comprises a ball plunger, which comprises a column part, a compression spring and a ball head part, the column part having a column cavity and a cavity opening connected to the column cavity, the compression spring being compressibly arranged in the column cavity of the column part, the ball head part being movably arranged in the cavity opening of the column part, and the bottom of the ball head part abuts against the compression spring, and the top of the ball head part protrudes from the column part, wherein the column part of the ball plunger is fixedly mounted on the shell body of the support shell, and the ball head part protrudes from the mounting cavity of the shell body, wherein the outer side of the skeleton part of the negative pressure forming part has a retaining groove, and when the negative pressure forming part is mounted on the support shell, the ball head part is retained in the retaining groove of the skeleton part, and the friction force generated between the ball head part and the peripheral wall of the skeleton part for forming the retaining groove prevents the negative pressure forming part from falling off from the support shell.

[0039] According to an embodiment of the utility model, the support shell includes a shell body and a horn body integrally extending outward from one end of the shell body, the shell body has an installation cavity and an installation opening connected to the installation cavity, wherein the negative pressure forming part includes a deformation part and a skeleton part, the deformation part has a combination end and a deformation end corresponding to the combination end, the milk suction cavity, the assembly opening and the milk discharge channel of the negative pressure forming part are formed in the deformation part, the skeleton part is combined with the combination 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;

[0040] The milk pump device further comprises an airway unit, the airway unit comprises an air guide seat and a reversing seat, wherein the air guide seat has a first airway extending transversely and a bottom plug hole and a top plug hole respectively connected to the first airway, the top of the shell body of the supporting shell has a shell plug arm, the opening of the gas exchange channel is formed at the end surface of the shell plug arm, and the air guide seat is arranged on the top of the shell body in a manner that the shell plug arm is inserted into the bottom plug hole, wherein the reversing seat has a bottom plug arm, a side plug arm and a second airway, one opening of the second airway is formed at the end surface of the bottom plug arm, and the other opening is formed at the end surface of the side plug arm, and the bottom plug arm of the reversing seat is inserted into the top plug hole of the air guide seat;

[0041] The bottom plug arm of the reversing seat is detachably inserted into the top plug hole of the air guide seat;

[0042] The negative pressure forming unit comprises an outer cover shell and a receiving cavity, the outer cover shell has a positioning hole, the outer cover shell is fixedly mounted on the outer edge of the speaker body of the support shell to form the receiving cavity between the support shell and the outer cover shell, the positioning hole of the outer cover shell is connected to the receiving cavity, the air guide seat has a top boss, the opening of the top plug hole is formed on the end surface of the top boss, the air guide seat is received in the receiving cavity of the negative pressure forming unit, and the top boss of the air guide seat extends to the positioning hole of the outer cover shell;

[0043] The top of the shell body of the supporting shell has a positioning wall, the positioning wall surrounds the bottom of the air guide seat, and the inner wall of the positioning wall is in contact with the outer wall of the air guide seat;

[0044] The outer cover shell includes an outer shell and an anti-detachment cover, the positioning hole is formed in the anti-detachment cover, the outer shell has a shell channel, the anti-detachment cover is fixedly installed in the shell channel of the outer shell, wherein the outer shell is fixedly installed on the outer edge of the speaker body of the supporting shell.

[0045] According to an embodiment of the utility model, the support shell includes a shell body and a horn body integrally extending outward from one end of the shell body, the shell body has an installation cavity and an installation opening connected to the installation cavity, wherein the negative pressure forming part includes a deformation part and a skeleton part, the deformation part has a combination end and a deformation end corresponding to the combination end, the milk suction cavity, the assembly opening and the milk discharge channel of the negative pressure forming part are formed in the deformation part, the skeleton part is combined with the combination 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;

[0046] The bottom of the shell body of the supporting shell has a mounting notch, the bottom of the frame part has an inner mounting arm and an outer mounting arm surrounding the inner mounting arm, an opening of the milk discharge channel is formed at the end surface of the inner mounting arm, the outer mounting arm is held in the mounting notch of the shell body, the one-way valve is mounted on the inner mounting arm, the milk suction device further comprises a milk bottle, and the milk bottle is mounted on the outer mounting arm;

[0047] The external mounting arm has a clamping groove extending in the circumferential direction and a guide groove extending in the height direction and connected to one end of the clamping groove. The bottle mouth of the milk bottle has a clamping protrusion, and the clamping protrusion of the milk bottle can slide into the clamping groove through the guide groove of the external mounting arm.

[0048] According to another aspect of the present invention, the present invention provides a breast pumping device, comprising:

[0049] One-way valve;

[0050] A flexible brassiere, wherein the brassiere comprises a flared bra shell; and

[0051] A negative pressure forming unit, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and has a negative pressure cavity, the supporting shell comprises a shell body and a horn 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, the negative pressure forming part comprises a deformation part and a frame part and has a milk suction cavity and a milk discharge passage connected to the milk suction cavity, the deformation part has a combining end and a deformation end corresponding to the combining end, the milk suction cavity and the milk discharge passage of the negative pressure forming part are formed in the deformation part, the frame part is combined with the combining end of the deformation part, the frame part is installed in the mounting opening of the shell body, the deformation part extends to the mounting cavity through the mounting opening, the negative pressure cavity is formed between the deformation part and the shell body, wherein the one-way valve is arranged in the frame part, and the one-way valve selectively opens and closes the milk discharge passage, wherein the horn cover body of the bra is arranged in the deformation part of the negative pressure forming part, and the outer edge of the horn cover body protrudes from the outer edge of the shell body.

[0052] According to an embodiment of the present invention, the skeleton portion of the negative pressure forming portion is detachably mounted on the shell body of the supporting shell.

[0053] According to an embodiment of the utility model, the milk pump device further includes a ball head plunger, the ball head plunger includes a column part, a compression spring and a ball head part, the column part has a column cavity and a cavity opening connected to the column cavity, the compression spring is compressibly arranged in the column cavity of the column part, the ball head part is movably arranged in the cavity opening of the column part, and the bottom of the ball head part abuts against the compression spring, and the top of the ball head part protrudes from the column part, wherein the column part of the ball head plunger is fixedly mounted on the shell body of the support shell, and the ball head part protrudes from the mounting cavity of the shell body, wherein the outer side of the skeleton part of the negative pressure forming part has a retaining groove, when the negative pressure forming part is mounted on the support shell, the ball head part is retained in the retaining groove of the skeleton part, and the friction force generated between the ball head part and the peripheral wall of the skeleton part for forming the retaining groove prevents the negative pressure forming part from falling off from the support shell.

[0054] According to one embodiment of the utility model, the milk pumping device further includes an air duct unit, which includes an air guide seat and a reversing seat, wherein the air guide seat has a first air duct extending laterally and a bottom socket and a top socket respectively connected to the first air duct, the support shell has a gas exchange channel, the top of the shell body has a shell insertion arm, the opening of the gas exchange channel is formed at the end surface of the shell insertion arm, and the air guide seat is arranged at the top of the shell body in such a way that the shell insertion arm is inserted into the bottom socket, wherein the reversing seat has a bottom insertion arm, a side insertion arm and a second air duct, one opening of the second air duct is formed on the end surface of the bottom insertion arm, and the other opening is formed on the end surface of the side insertion arm, and the bottom insertion arm of the reversing seat is inserted into the top socket of the air guide seat.

[0055] According to an embodiment of the utility model, the bottom insertion arm of the reversing seat is detachably inserted into the top insertion hole of the air guide seat.

[0056] According to one embodiment of the utility model, the negative pressure forming unit includes an outer cover shell and a receiving cavity, the outer cover shell has a positioning hole, the outer cover shell is fixedly mounted on the outer edge of the horn body of the supporting shell to form the receiving cavity between the supporting shell and the outer cover shell, the positioning hole of the outer cover shell is connected to the receiving cavity, wherein the air guide seat has a top boss, and the opening of the top jack is formed on the end surface of the top boss, wherein the air guide seat is received in the receiving cavity of the negative pressure forming unit, and the top boss of the air guide seat extends to the positioning hole of the outer cover shell.

[0057] According to an embodiment of the utility model, the top of the shell body of the support shell has a positioning wall, the positioning wall surrounds the bottom of the air guide seat, and the inner wall of the positioning wall is in contact with the outer wall of the air guide seat.

[0058] According to one embodiment of the utility model, the outer cover shell includes an outer shell and an anti-detachment cover, the positioning hole is formed in the anti-detachment cover, the outer shell has a shell channel, the anti-detachment cover is fixedly installed on the shell channel of the outer shell, wherein the outer shell is fixedly installed on the outer edge of the speaker body of the supporting shell.

[0059] According to one embodiment of the utility model, the bottom of the shell body of the supporting shell has a mounting notch, the bottom of the skeleton part has an internal mounting arm and an external mounting arm surrounding the internal mounting arm, an opening of the milk discharge channel is formed on the end surface of the internal mounting arm, the external mounting arm is held in the mounting notch of the shell body, wherein the one-way valve is mounted on the internal mounting arm, wherein the milk suction device further includes a milk bottle, and the milk bottle is mounted on the external mounting arm.

[0060] According to one embodiment of the utility model, the external mounting arm has a clamping groove extending in the circumferential direction and a guide groove extending in the height direction and connected to one end of the clamping groove, and the bottle mouth of the milk bottle has a clamping protrusion, and the clamping protrusion of the milk bottle can slide into the clamping groove through the guide groove of the external mounting arm.

[0061] According to another aspect of the present invention, the present invention further provides a breast pump, which includes a breast pump host and a milk suction device, wherein the milk suction device includes:

[0062] One-way valve;

[0063] A flexible brassiere, wherein the brassiere comprises a flared bra shell; and

[0064] A negative pressure forming unit, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and has a negative pressure cavity, the supporting shell comprises a shell body and a horn 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, the negative pressure forming part comprises a deformation part and a skeleton part and has a milk suction cavity and a milk discharge passage connected to the milk suction cavity, the deformation part has a combining end and a deformation end corresponding to the combining end, the milk suction cavity and the milk discharge passage of the negative pressure forming part are formed in the deformation part, and the skeleton part is combined with the combining end of the deformation part end, the skeleton part is installed on 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, wherein the one-way valve is arranged on the skeleton part, and the one-way valve selectively opens and closes the milk discharge channel, wherein the horn cover body of the bra is arranged on the deformation part of the negative pressure forming part, and the outer edge of the horn cover body protrudes from the outer edge of the shell body, wherein the gas exchange channel of the support shell of the negative pressure forming unit of the milk suction device is connected to the breast pump host. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a three-dimensional schematic diagram of a breast pump according to a preferred embodiment of the utility model.

[0066] Figure 2 Schematic diagram of the breast pump in use according to the preferred embodiment of the present invention.

[0067] Figure 3 It is a three-dimensional schematic diagram of a milk suction device of the breast pump according to the above preferred embodiment of the utility model from one viewing angle.

[0068] Figure 4 It is a three-dimensional schematic diagram of the milk suction device of the breast pump according to the above preferred embodiment of the utility model from another perspective.

[0069] Figure 5 It is a schematic exploded view of the milk suction device of the breast pump according to the preferred embodiment of the present utility model from one perspective.

[0070] Figure 6 It is a schematic exploded view of the milk suction device of the breast pump according to the preferred embodiment of the present utility model from another perspective.

[0071] Figure 7 It is a cross-sectional schematic diagram of the milk suction device of the breast pump according to the above preferred embodiment of the utility model from a three-dimensional perspective.

[0072] Figure 8 It is a schematic cross-sectional view from a plane perspective of the milk suction device of the breast pump according to the above preferred embodiment of the utility model.

[0073] Fig. 9 yes Figure 8 A magnified schematic diagram of the local location.

[0074] Fig.10 It is a cross-sectional schematic diagram of the milk suction device of the breast pump according to the above preferred embodiment of the utility model from another plane perspective.

[0075] Fig.11 yes Fig.10 A magnified schematic diagram of the local location.

[0076] Fig.12 It is a schematic diagram of the assembly process of the milk suction device of the breast pump according to the above preferred embodiment of the utility model from a cross-sectional perspective.

[0077] Fig.13 It is a schematic diagram of the assembly process of the milk suction device of the breast pump according to the above preferred embodiment of the utility model from another cross-sectional perspective.

[0078] Fig.14 It is a three-dimensional schematic diagram from one perspective of another milk suction device of the breast pump according to the above preferred embodiment of the utility model.

[0079] Fig.15 It is a three-dimensional schematic diagram of the milk suction device of the breast pump according to the above preferred embodiment of the utility model from another perspective.

[0080] Fig.16 It is a cross-sectional schematic diagram of the milk suction device of the breast pump according to the above preferred embodiment of the utility model.

[0081] Fig.17 It is a three-dimensional schematic diagram from one perspective of another milk suction device of the breast pump according to the above preferred embodiment of the utility model.

[0082] Fig.18 It is a three-dimensional schematic diagram of the milk suction device of the breast pump according to the above preferred embodiment of the utility model from another perspective.

[0083] Fig.19 It is a cross-sectional schematic diagram of the milk suction device of the breast pump according to the above preferred embodiment of the utility model. DETAILED DESCRIPTION

[0084] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited to the construction and arrangement details of the components described below or illustrated in the following figures in its application. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for the purpose of description and should not be considered as restrictive. The use of "including", "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0085] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 aspect, 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.

[0086] Refer to the attached drawings of the specification of this utility model Figure 1 and Figure 2 A breast pump according to a preferred embodiment of the present invention will be disclosed and described in the following description. The breast pump includes at least one milk suction device 100, a breast pump host 200 and at least one air tube 300. The opposite ends of the air tube 300 are respectively connected to the milk suction device 100 and the breast pump host 200. The milk suction device 100 can be fixed to the mother's breast. When the breast pump host 200 is working, the milk suction device 100 can help the mother to suck milk. In the breast pump of the present invention, the breast pump allows the milk suction device 100 to be placed in a bra 400, and the bra 400 is used to fix the milk suction device 100 to the breast. In this way, during the milk suction process, the breast pump does not require the mother to hold the milk suction device 100 by hand, so as to free the mother's hands.

[0087] Attached Figures 3 to 13 A specific example of the milk pumping device 100 is shown. The milk pumping device 100 includes a negative pressure generating unit 10 , a flexible breast shield 20 mounted on the negative pressure generating unit 10 , and a one-way valve 30 mounted on the negative pressure generating unit 10 .

[0088] Specifically, the negative pressure forming unit 10 includes a supporting shell 11 and a negative pressure forming part 12 and has a negative pressure chamber 13, the negative pressure forming part 12 is installed on the supporting shell 11, and the negative pressure chamber 13 is formed between the supporting shell 11 and the negative pressure forming part 12, wherein the supporting shell 11 has a gas exchange channel 111, and the gas exchange channel 111 is connected to the negative pressure chamber 13, wherein the negative pressure forming part 12 has a milk suction chamber 121 and an assembly opening 122 and a milk discharge channel 123 respectively connected to the milk suction chamber 121, wherein the bra 20 is assembled to the assembly opening 122 of the negative pressure forming part 12, wherein the one-way valve 30 is arranged on the negative pressure forming part 12, and the one-way valve 30 selectively opens and closes the milk discharge channel 123.

[0089] The gas exchange channel 111 of the support shell 11 can be connected to the breast pump host 200 through the air pipe 300. When the mother fixes the milk suction device 100 on the breast through the bra 400, the bra 20 fits the breast and covers the nipple. In this way, the breast and the one-way valve 30 can make the milk suction chamber 121 of the negative pressure forming part 12 and a part of the space of the bra 20 form a closed space. When the breast pump host 200 is working, the air in the negative pressure chamber 13 of the negative pressure forming unit 10 can be discharged through the gas exchange channel 111 of the support shell 11 and the air pipe 300 to reduce the pressure of the negative pressure chamber 13. At this time, the one-way valve 30 closes the milk discharge channel 123 of the negative pressure forming part 12, and the space of the milk suction chamber 121 of the negative pressure forming part 12 increases, resulting in a decrease in the pressure of the milk suction chamber 121. Then, the air from the external environment can be discharged through the air pipe 3 00 and the gas exchange channel 111 of the supporting shell 11 enter the negative pressure chamber 13 of the negative pressure forming unit 10, and the pressure of the negative pressure chamber 13 increases. At this time, the one-way valve 30 opens the milk discharge channel 123 of the negative pressure forming part 12 to discharge milk, and the space of the milk suction chamber 121 of the negative pressure forming part 12 is reduced, resulting in an increase in the pressure of the milk suction chamber 121. By alternately reducing and increasing the pressure of the negative pressure chamber 13 of the negative pressure forming unit 10, the breast pump can achieve milk suction.

[0090] In the attached Figures 3 to 13In one example of the breast pump device 100 shown, the bra 20 includes a shoulder ring 21, a fitting ring 22, and a trumpet cover 23. The fitting ring 22 integrally extends to one side from the inner edge of the shoulder ring 21, and the trumpet cover 23 integrally extends to the opposite direction from the outer edge of the shoulder ring 21. In other words, the bra 20 is a whole. For example, in some embodiments, the bra 20 can be made of silicone injection molding, so that the bra 20 is flexible and is a whole.

[0091] The assembly ring 22 of the bra 20 is assembled to the assembly opening 122 of the negative pressure forming part 12. When the mother uses the bra 400 to fix the milk suction device 100 on the breast, the horn cover 23 of the bra 20 is directly attached to the breast, and the opening of the horn cover 23 is closed by the breast, so that: on the one hand, the horn cover 23 and the negative pressure forming unit 10 are far apart, and before the mother uses the bra 400 to fix the milk suction device 100 on the breast, the horn cover 23 can be turned outward first, and after the nipple is aligned with the milk suction cavity 121 of the negative pressure forming part 12, the horn cover 23 can be restored, so that the horn cover 23 is closely attached to the breast, so that the breast can close the horn cover 23, so that during the milk suction process, the milk suction cavity 121 of the negative pressure forming part 12 and a part of the space of the bra 20 are closed. On the one hand, a negative pressure environment is formed between the breast and the horn cover 23, so that the horn cover 23 is closely attached to the breast; on the other hand, after the mother uses the bra 400 to fix the milk suction device 100 on the breast, the bra 20 isolates the negative pressure forming unit 10 and the breast to prevent the negative pressure forming unit 10 from directly contacting the breast. The flexible bra 20 can improve the comfort of the mother when using the breast pump; on the other hand, when the assembly ring 22 of the bra 20 changes with the position of the negative pressure forming unit 10, the shoulder ring 21 of the bra 20 can be deformed to prevent the horn cover 23 from changing with the position of the negative pressure forming unit 10. In this way, during the milk suction process, the bra 20 can always reliably fit the mother's breast to avoid milk leakage.

[0092] In the attached Figures 3 to 13 In one example of the breast pumping device 100 shown, the mounting ring 22 of the bra 20 is detachably mounted on the negative pressure forming part 12, so that the bra 20 can be easily cleaned to improve the hygiene of the breast pump. At the same time, the mother can choose a suitable bra 20 according to her own needs to meet personalized needs. For example, the bras 20 of different materials, different sizes, and different shapes can all be selected and mounted on the same negative pressure forming part 12.

[0093] In the attached Figures 3 to 13 In the specific example of the breast pumping device 100 shown, the outer diameter of the mounting ring 22 of the bra 20 is consistent with the inner diameter of the negative pressure forming part 12, so that based on the friction force generated between the outer wall of the mounting ring 22 and the inner wall of the negative pressure forming part 12, the mounting ring 22 of the bra 20 can be reliably assembled to the negative pressure forming part 12.

[0094] Reference Figure 7 , Figure 8 and Fig.12 , the assembly ring 22 of the bra 20 extends through the assembly opening 122 of the negative pressure forming part 12 to the outside of the milk discharge passage 123 of the negative pressure forming part 12 to form a step, in this way, the sucked milk can be blocked by the assembly ring 22, preventing the milk from flowing to the position of the horn cover 23, thereby preventing the milk from leaking from the fitting position of the horn cover 23 and the breast. In other words, by allowing the assembly ring 22 of the bra 20 to extend through the assembly opening 122 of the negative pressure forming part 12 to the outside of the milk discharge passage 123 of the negative pressure forming part 12, the sucked milk is only allowed to be discharged through the milk discharge passage 123 of the negative pressure forming part 12.

[0095] Reference Figures 5 to 9 The bra 20 further includes a limiting portion 24, which integrally extends from the peripheral wall of the assembly ring body 22 in a direction perpendicular to the extension direction of the assembly ring body 22, and there is a gap between the limiting portion 24 and the shoulder ring body 21. In this way, when the assembly ring body 22 of the bra 20 is assembled to the assembly opening 122 of the negative pressure forming part 12, the limiting portion 24 limits the assembly depth of the assembly ring body 22 by abutting against the negative pressure forming part 12. In this way, on the one hand, the The limiting portion 24 can ensure that there is a gap between the shoulder ring body 21 and the negative pressure forming portion 12, so that when the assembly ring body 22 changes with the position of the negative pressure forming unit 10, the shoulder ring body 21 can be deformed. On the other hand, the limiting portion 24 can ensure that the assembly ring body 22 extends to the outside of the milk discharge channel 123 of the negative pressure forming portion 12 through the assembly opening 122 of the negative pressure forming portion 12, thereby preventing the assembly ring body 22 from covering the milk discharge channel 123 of the negative pressure forming portion 12.

[0096] In the attached Figures 3 to 13In the specific example of the breast pump device 100 shown, the limiting portion 24 is annular, and the distance between the outer side of the limiting portion 24 and the central axis of the bra 20 is greater than the distance between the outer side of the shoulder ring body 21 and the central axis of the bra 20, so that from the top view of the bra 20 (the angle perpendicular to the central axis of the bra 20), the limiting portion 24 covers the shoulder ring body 21, making the shoulder ring body 21 visually invisible.

[0097] Reference Figures 6 to 8 The negative pressure forming part 12 has an embedding groove 124, and the embedding groove 124 surrounds the outer side of the assembly opening 122. The limiting part 24 of the bra 20 has an embedding protrusion 241, and the shape and size of the embedding protrusion 241 match the shape and size of the embedding groove 124. The embedding protrusion 241 of the limiting part 24 is embedded in the embedding groove 124 of the negative pressure forming part 12. Based on the friction force generated between the inner wall of the negative pressure forming part 12 for forming the embedding groove 124 and the outer wall of the embedding protrusion 241 of the limiting part 24, the assembly ring body 22 of the bra 20 can be reliably assembled on the negative pressure forming part 12.

[0098] In the attached Figures 3 to 13 In the specific example of the breast pumping device 100 shown, the embedding groove 124 of the negative pressure forming portion 12 is annular and surrounds the assembly opening 122. Correspondingly, the embedding protrusion 241 of the limiting portion 24 of the bra 20 is annular and surrounds the assembly ring body 22.

[0099] Continue to refer to the attached Figures 3 to 13The supporting shell 11 includes a shell body 112 and a horn body 113 integrally extending outward from one end of the shell body 112. The shell body 112 has a mounting cavity 1121 and a mounting opening 1122 communicating with the mounting cavity 1121. The gas exchange channel 111 is provided in the shell body 112, and the gas exchange channel 111 communicates with the mounting cavity 1121 of the shell body 112. The negative pressure forming part 12 includes a deformation part 125 and a skeleton part 126. The milk suction cavity 121, the assembly opening 122 and the milk discharge channel 123 of the negative pressure forming part 12 are formed in the deformation part 125. The deformation part 125 has a coupling end 1251 and a deformation end 1252 corresponding to the coupling end 1251. The skeleton part 126 is coupled to the coupling end 1251 of the deformation part 125. The skeleton portion 126 of the negative pressure forming part 12 is installed in the mounting opening 1122 of the shell body 112 of the supporting shell 11, the deformation portion 125 extends to the mounting cavity 1121 through the mounting opening 1121 of the shell body 112, and the negative pressure cavity 13 is formed between the deformation portion 125 and the shell body 112.

[0100] When the breast pump host 200 is working, the air in the negative pressure chamber 13 of the negative pressure forming unit 10 is discharged through the gas exchange channel 111 of the supporting shell 11 and the air pipe 300 to reduce the pressure of the negative pressure chamber 13. At this time, the one-way valve 30 closes the milk discharge channel 123 of the negative pressure forming part 12, and the deformed end 1252 of the deformed part 125 deforms toward the end close to the shell body 112 and away from the horn body 113 to increase the space of the milk suction chamber 121 of the negative pressure forming part 12, thereby increasing the pressure of the milk suction chamber 121. The force is reduced, and as the air from the external environment enters the negative pressure chamber 13 of the negative pressure forming unit 10 through the air pipe 300 and the gas exchange channel 111 of the supporting shell 11, the pressure of the negative pressure chamber 13 increases. At this time, the one-way valve 30 opens the milk discharge channel 123 of the negative pressure forming unit 12 to discharge milk, and the deformed end 1252 of the deformed portion 125 deforms toward the end away from the shell body 112 and away from the horn body 113, so as to reduce the space of the milk suction chamber 121 of the negative pressure forming unit 12, thereby causing the pressure of the milk suction chamber 121 to increase.

[0101] It is worth mentioning that the manner in which the skeleton portion 126 is combined with the combined end 1251 of the deformed portion 125 is not limited in the milk suction device 100 of the present invention. For example, in a specific example of the milk suction device 100 of the present invention, the deformed portion 125 and the skeleton portion 126 are made separately, and glue is used to bond the skeleton portion 126 to the combined end 1251 of the deformed portion 125, so that the skeleton portion 126 is combined with the combined end 1251 of the deformed portion 125. In another specific example of the milk suction device 100 of the present invention, first, the deformed portion 125 is made, and secondly, the skeleton portion 126 is integrally combined with the deformed portion 125 through a secondary encapsulation process, so that the skeleton portion 126 is combined with the combined end 1251 of the deformed portion 125. In another specific example of the breast pump device 100 of the present invention, first, the skeleton part 126 is made, and then, the connecting end 1251 of the deformation part 125 is integrally combined with the skeleton part 126 through a secondary encapsulation process, so that the skeleton part 126 is combined with the connecting end 1251 of the deformation part 125.

[0102] In the attached Figures 3 to 13 In the specific example of the milk pumping device 100 of the present invention shown, the skeleton portion 126 of the negative pressure forming portion 12 surrounds the coupling end 1251 of the deformation portion 125 , so that the skeleton portion 126 enables the negative pressure forming portion 12 to be reliably mounted on the supporting shell 11 .

[0103] Reference Figures 5 to 8 The bottom of the skeleton part 126 of the negative pressure forming part 12 has an internal mounting arm 1261 and an arm body channel 1262, the arm body channel 1262 passes through the internal mounting arm 1261, and the arm body channel 1262 is connected to the milk discharge channel 123 of the negative pressure forming part 12, and the one-way valve 30 is installed on the internal mounting arm 1261 of the skeleton part 126 to assemble the one-way valve 30 on the negative pressure forming unit 10.

[0104] Preferably, the one-way valve 30 is a duckbill valve, and as the pressure of the milk suction chamber 121 of the negative pressure forming portion 12 changes, the one-way valve 30 can switch between an open state and a closed state, wherein when the deformed end 1252 of the deformed portion 125 is deformed toward an end close to the shell body 112 and away from the horn body 113, causing the pressure in the milk suction chamber 121 to decrease, the one-way valve 30 closes the milk discharge channel 123 of the negative pressure forming portion 12; when the deformed end 1252 of the deformed portion 125 is deformed toward an end away from the shell body 112 and away from the horn body 113, causing the pressure in the milk suction chamber 121 to increase, the one-way valve 30 opens the milk discharge channel 123 of the negative pressure forming portion 12.

[0105] In the attached Figures 3 to 13 In an example of the milk pumping device 100 of the present invention shown, the negative pressure forming part 12 is detachably mounted on the supporting shell 11, so that the negative pressure forming part 12 can be cleaned after being disassembled from the supporting shell 11 to improve the hygiene of the milk pumping device 100.

[0106] Continue to refer to the attached Figures 10 to 13The milk pump device 100 further includes at least one ball plunger 40, which includes a column part 41, a compression spring 42 and a ball head part 43, wherein the column part 41 has a column cavity 411 and a cavity opening 412 connected to the column cavity 411, the compression spring 42 is compressibly arranged in the column cavity 411 of the column part 41, the ball head part 43 is movably arranged in the cavity opening 412 of the column part 41, and the bottom of the ball head part 43 is against the compression spring 42, and the top of the ball head part 43 protrudes from the column part 41. The column part 41 of the ball plunger 40 is fixedly mounted on the shell body 112 of the support shell 11, and the ball head part 43 protrudes from the mounting cavity 1121 of the shell body 112. The outer wall of the skeleton part 126 of the negative pressure forming part 12 has at least one retaining groove 1263, wherein when the negative pressure forming part 12 is installed on the support shell 11, the outer wall of the skeleton part 126 pushes the ball head part 43 toward the bottom of the column part 41, so that the ball head part 43 squeezes the compression spring. 42 causes the compression spring 42 to deform and accumulate elastic potential energy. When the negative pressure forming part 12 is installed in place, the compression spring 42 pushes the ball head part 43 in a direction away from the bottom of the column part 41, so that the ball head part 43 protrudes into the retaining groove 1263 of the frame part 126. Based on the friction force generated between the peripheral wall of the frame part 126 for forming the retaining groove 1263 and the outer surface of the ball head part 43, the ball head plunger 40 enables the negative pressure forming part 12 to be reliably installed on the support shell 11. Accordingly, when the negative pressure forming part 12 is removed from the support shell 11, as long as the pulling force of pulling the negative pressure forming part 12 outward is greater than the friction force generated between the peripheral wall of the frame part 126 for forming the retaining groove 1263 and the outer surface of the ball head part 43, the ball head part 43 can be separated from the retaining groove 1263 of the frame part 126.

[0107] It is worth mentioning that the manner in which the column portion 41 of the ball plunger 40 is fixedly mounted on the shell body 112 of the support shell 11 is not limited in the breast pump device 100 of the present invention. Fig.10 and Fig.11 The shell body 112 of the support shell 11 has at least one mounting hole 1123 , and the column part 41 of the ball plunger 40 is installed in the mounting hole 1123 of the shell body 112 to fixedly install the column part 41 on the shell body 112 .

[0108] In a specific example of the breast pump device 100 of the present invention, the shell body 112 of the support shell 11 has two mounting holes 1123, and the two mounting holes 1123 are located on opposite sides of the mounting cavity 1121. The number of the ball head plungers 40 is two, and the column part 41 of each ball head plunger 40 is fixedly mounted on each mounting hole 1123 of the shell body 112, so that one ball head plunger 40 is provided on opposite sides of the mounting cavity 1121 of the shell body 112, and correspondingly, one holding groove 126 is provided on opposite sides of the skeleton part 126 of the negative pressure forming part 12. 3, so that when the negative pressure forming part 12 is installed on the shell body 112 of the supporting shell 11, the ball head parts 43 of the two ball head plungers 40 are respectively held in the two retaining grooves 1263 of the skeleton part 126, so that the negative pressure forming part 12 can be reliably installed in the mounting opening 1122 of the shell body 112, and in this way, the skeleton part 126 and the shell body 112 can squeeze a part of the deformation part 125, so that the part of the deformation part 125 organizes the gap between the skeleton part 126 and the shell body 112 by deformation, thereby ensuring the sealing of the negative pressure chamber 13.

[0109] In the attached Figures 3 to 13 In an example of the milk pumping device 100 of the present invention, the milk pumping device 100 includes an airway unit 50, and the airway unit 50 includes an air guide seat 51 and a reversing seat 52. The air guide seat 51 has a first airway 511 extending laterally and a bottom plug hole 512 and a top plug hole 513 respectively connected to the first airway 511. The top of the shell body 112 of the supporting shell 11 has a shell plug arm 1124, and the opening of the gas exchange channel 111 is formed at the end surface of the shell plug arm 1124. The air guide seat 51 is arranged on the top of the shell body 112 in a manner that the shell plug arm 1124 is inserted into the bottom plug hole 512. The reversing seat 52 has a bottom plug arm 521, a side plug arm 522 and a second airway 523, one opening of the second airway 523 is formed at the end surface of the bottom plug arm 521, and the other opening is formed at the end surface of the side plug arm 522. The bottom insertion arm 521 of the reversing seat 52 is inserted into the top insertion hole 513 of the air guide seat 51 so that the negative pressure chamber 13 of the negative pressure forming unit 10, the first air channel 511 of the air guide seat 51 and the second air channel 523 of the reversing seat 52 are connected in sequence.

[0110] In the attached Figures 3 to 13In the example of the breast pumping device 100 shown, by arranging the air guide seat 51 and the reversing seat 52 on the top of the shell body 112 of the supporting shell 11, the part of the breast pumping device 100 for connecting the air pipe 300 (i.e., the side insert arm 522 of the reversing seat 52) ​​can be arranged at a reasonable position to avoid the part from occupying a large space, which is crucial for the breast pumping device 100 that requires the bra 400 to be fixed on the breast. In other words, the arrangement of the air guide seat 51 and the reversing seat 52 of the airway unit 50 can realize the miniaturization of the breast pumping device 100, so that when the mother fixes the breast pumping device 100 on the breast through the bra 400, the breast pumping device 100 will not excessively push the bra 400 outwards, and at the same time, the pressure applied by the bra 400 to the breast through the breast pumping device 100 will also be reduced, thereby improving the comfort of the mother when she is sucking milk through the breast pumping device 100.

[0111] In the attached Figures 3 to 13 In the example of the milk pumping device 100 shown, the bottom arm 521 of the reversing seat 52 is detachably inserted into the top socket 513 of the air guide seat 51, so that the mother can choose the orientation of the side arm 522 of the reversing seat 52 as needed. For example, the mother can allow the bottom arm 521 of the reversing seat 52 to be inserted into the top socket 513 of the air guide seat 51 with the side arm 522 of the reversing seat 52 facing the left side as needed, or can allow the bottom arm 521 of the reversing seat 52 to be inserted into the top socket 513 of the air guide seat 51 with the side arm 522 of the reversing seat 52 facing the right side as needed. In this way, the mother does not need to distinguish between the two milk pumping devices 100 during the process of assembling the breast pump.

[0112] In the attached Figures 3 to 13In the example of the milk pumping device 100 shown, the negative pressure forming unit 10 further includes an outer cover shell 14 and a receiving cavity 15, the outer cover shell 14 has a positioning hole 141, the outer cover shell 14 is fixedly mounted on the outer edge of the horn body 113 of the support shell 11 to form the receiving cavity 15 between the support shell 11 and the outer cover shell 14, and the positioning hole 141 of the outer cover shell 14 is connected to the receiving cavity 15. The air guide seat 51 has a top boss 514, the opening of the top insertion hole 513 is formed at the end surface of the top boss 514, the air guide seat 51 is received in the receiving cavity 15 of the negative pressure forming unit 10, and the top boss 514 of the air guide seat 51 extends to the positioning hole 141 of the outer cover shell 14. It can be understood that since the shell insert arm 1124 of the shell body 112 of the supporting shell 11 is inserted into the bottom socket 512 of the air guide seat 51 and the top boss 514 of the air guide seat 51 extends to the positioning hole 141 of the outer cover shell 14, the air guide seat 51 is stably accommodated in the accommodating cavity 15 of the negative pressure forming unit 10, and the air guide seat 51 will not shift regardless of whether the bottom insert arm 521 of the reversing seat 52 is inserted into the top socket 513 of the air guide seat 51 or the bottom insert arm 521 of the reversing seat 52 is pulled out from the top socket 513 of the air guide seat 51.

[0113] Reference Figure 7 and Figure 8 The top of the shell body 112 of the supporting shell 11 has a positioning wall 1125, and the positioning wall 1125 surrounds the bottom of the air guide seat 51, and the inner wall of the positioning wall 1125 fits the outer wall of the air guide seat 51. In this way, on the one hand, before the outer cover shell 14 is assembled to the supporting shell 11, the positioning wall 1125 of the shell body 112 can pre-position the air guide seat 51, so that when the outer cover shell 14 is assembled to the supporting shell 11, the positioning wall 1125 of the shell body 112 can pre-position the air guide seat 51. During the assembly process, the positioning wall 1125 of the shell body 112 can prevent the air guide seat 51 from being misplaced, thereby improving the assembly efficiency. On the other hand, when the bottom insert arm 521 of the reversing seat 52 is inserted into the top plug hole 513 of the air guide seat 51 or the bottom insert arm 521 of the reversing seat 52 is pulled out from the top plug hole 513 of the air guide seat 51, the positioning wall 1125 of the shell body 112 can prevent the air guide seat 51 from being shifted.

[0114] Continue to refer to the attached Figures 5 to 8The outer cover shell 14 includes an outer shell 142 and an anti-detachment cover 143, the positioning hole 141 is formed in the anti-detachment cover 143, wherein the outer shell 142 has a shell channel 1421, and the outer shell 142 is fixedly mounted on the outer edge of the speaker body 113 of the support shell 11, and the position of the top boss 514 of the air guide seat 51 corresponds to the position of the shell channel 1421 of the outer shell 142, wherein the anti-detachment cover 143 is fixedly mounted on the shell channel 1421 of the outer shell 142 in a manner that the top boss 514 of the air guide seat 51 is inserted into the positioning hole 141 of the outer cover shell 14, in this way, the support shell 11, the air guide seat 51 and the outer cover shell 14 can be conveniently installed, and the misalignment of the air guide seat 51 can be avoided.

[0115] It is worth mentioning that the manner in which the outer shell 142 is fixedly mounted on the horn 113 of the supporting shell 11 is not limited in the breast pump device 100 of the present invention. Figure 5 The rear side of the speaker body 113 of the supporting shell 11 has a plurality of snap-fitting arms 1131, and the snap-fitting arms 1131 have snap-fitting holes 11311. The inner wall of the outer shell 142 has a plurality of snap-fitting protrusions 1422. The snap-fitting arms 1131 of the speaker body 113 extend into the interior of the outer shell 142, and the snap-fitting protrusions 1422 of the outer shell 142 are respectively snapped into the snap-fitting holes 11311 of the snap-fitting arms 1131, so that the outer shell 142 is fixedly mounted on the speaker body 113 of the supporting shell 11. Optionally, in other specific examples of the milk suction device 100 of the present invention, the clamping arm 1131 can be provided on the outer shell 142, and the clamping protrusion 1422 is provided on the horn body 113, so that these clamping arms 1131 of the outer shell 142 extend into the interior of the horn body 113, and these clamping protrusions 1422 of the horn body 113 are respectively clamped into the clamping holes 11311 of these clamping arms 1131 of the outer shell 142, so that the outer shell 142 is fixedly mounted on the horn body 113 of the support shell 11.

[0116] It is worth mentioning that the anti-detachment cover 143 is fixedly mounted on the housing channel 1421 of the housing body 142 in the breast pump device 100 of the present invention. Figures 5 to 7, the anti-detachment cover 143 has a plurality of hook arms 1431 on opposite sides respectively, the shape of the anti-detachment cover 143 matches the shape of the shell channel 1421 of the shell body 142, and the size of the anti-detachment cover 143 is slightly larger than the size of the shell channel 1421 of the shell body 142, and these hook arms 1431 of the anti-detachment cover 143 extend from the outside to the inside of the shell body 142 through the shell channel 1421 of the shell body 142 respectively, so as to fix the anti-detachment cover 143 to the shell channel 1421 of the shell body 142, and the anti-detachment cover 143 seals the shell channel 1421 of the shell body 142.

[0117] In the attached Figures 3 to 13 In the example of the milking device 100 shown, the bottom of the shell body 112 of the supporting shell 11 has a mounting notch 1126, and the bottom of the skeleton part 126 of the negative pressure forming part 12 has an external mounting arm 1264, the external mounting arm 1264 surrounds the internal mounting arm 1261, and the external mounting arm 1264 can be held in the mounting notch 1126 of the shell body 112, wherein the milking device 100 further includes a milk bottle 60, and the milk bottle 60 is mounted on the skeleton part 1 The external mounting arm 1264 of the shell body 112 is configured so that: on the one hand, the sucked milk can be collected in the milk bottle 60, and on the other hand, the frame portion 126 is retained above the portion of the shell body 112 for forming the mounting notch 1126, and the milk bottle 60 is retained below the portion, so that the frame portion 126 and the milk bottle 60 clamp the portion of the shell body 112 for forming the mounting notch 1126 on opposite sides, so as to further ensure that the negative pressure forming portion 12 is reliably and stably mounted on the supporting shell 11.

[0118] Reference Figure 5 and Figure 6 The external mounting arm 1264 of the skeleton portion 126 of the negative pressure forming portion 12 has at least one clamping groove 12641 extending in the circumferential direction and at least one guide groove 12642 extending in the height direction and connected to one end of the clamping groove 12641. The bottle mouth of the milk bottle 60 has at least one clamping protrusion 61. The clamping protrusion 61 of the milk bottle 60 can slide into the clamping groove 12641 through the guide groove 12642 of the external mounting arm 1264 of the skeleton portion 126 to install the milk bottle 60 on the external mounting arm 1264 of the skeleton portion 126.

[0119] Attached Figures 14 to 16 Another specific example of the breast pump device 100 is shown. Figures 3 to 13The breast pump device 100 shown is different in that Figures 14 to 16 In the specific example of the breast pumping device 100 shown, the bra 20 includes the trumpet cover 23, which is arranged on the negative pressure forming part 12, and the outer edge of the trumpet cover 23 protrudes from the outer edge of the trumpet body 113 of the support shell 11. In this way, on the one hand, the support shell 11 is retracted to miniaturize the breast pumping device 100, so that when the mother fixes the breast pumping device 100 on the chest through the bra 400, the breast pumping device 100 will not excessively support the bra 400 outwards. At the same time, the bra 400 is The pressure applied to the chest by the breast pumping device 100 will also be reduced, thereby improving the comfort of the mother when sucking milk through the breast pumping device 100. On the other hand, when the mother fixes the breast pumping device 100 on the chest through the bra 400, the outer edge of the horn cover 23 can be squeezed by the chest and deformed in the direction of the outer wall of the horn body 113 that fits the support shell 11, so as to prevent the chest from directly contacting the horn body 113 of the support shell 11, thereby not only improving the comfort of the breast pumping device 100, but also ensuring the hygiene of the breast pumping device 100.

[0120] Preferably, the horn cover body 23 of the bra 20 and the deformed portion 125 of the negative pressure forming part 12 are an integrated structure, for example, the deformed portion 125 of the negative pressure forming part 12 and the horn cover body 23 of the bra 20 can be integrally formed by silicone injection molding. More preferably, the skeleton portion 126 of the negative pressure forming part 12 can be integrally combined with the combined end 1251 of the deformed portion 125 by a secondary encapsulation process.

[0121] Reference Fig.14 and Fig.16 The breast pump device 100 further includes a nipple shield 70, which is mounted on the assembly opening 122 of the negative pressure forming portion 12, and is surrounded by the horn shield body 23 of the bra 20. When the mother fixes the breast pump device 100 on her chest through the bra 400, the nipple shield 70 covers the nipple to facilitate milk suction.

[0122] Attached Figures 17 to 19 Another specific example of the breast pump device 100 is shown. Figures 14 to 16 The breast pump device 100 shown is different in that Figures 17 to 19In the specific example of the breast pumping device 100 shown, the outer edge of the horn cover body 23 of the bra 20 is flush with the outer edge of the horn body 113 of the support shell 11, and the outer surface of the horn body 113 is a concave surface, and the surface of the outer shell 142 of the outer cover shell 14 is a convex surface. In this way, the support shell 11 is retracted to miniaturize the breast pumping device 100, so that when the mother fixes the breast pumping device 100 on the chest through the bra 400, the breast pumping device 100 will not excessively push the bra 400 outwards. At the same time, the pressure applied to the chest by the bra 400 through the breast pumping device 100 will also be reduced, thereby improving the comfort of the mother when sucking milk through the breast pumping device 100.

[0123] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A breast pump, characterized in that: include: Breast pump host; Breast pumping device; as well as An air tube, wherein the opposite ends of the air tube are respectively connected to the breast pump host and the milk suction device, wherein the milk suction device further comprises: One-way valve; A flexible bra, wherein the bra comprises a shoulder ring, a fitting ring and a trumpet cover, wherein the fitting ring integrally extends from the inner edge of the shoulder ring to one side, and the trumpet cover integrally extends from the outer edge of the shoulder ring to the opposite direction; and A negative pressure forming unit, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and has a negative pressure chamber, 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 supporting shell has a gas exchange channel, the gas exchange channel is connected to the negative pressure chamber, the negative pressure forming part has a milk suction chamber and an assembly opening and a milk discharge passage respectively connected to the milk suction chamber, wherein the one-way valve is arranged on the negative pressure forming part to selectively open and close the milk discharge passage, wherein the assembly ring body of the bra is assembled on the assembly opening of the negative pressure forming part. 2 . The breast pump according to claim 1 , wherein the fitting ring of the bra is detachably fitted to the fitting opening of the negative pressure generating portion.

3. The breast pump according to claim 1, wherein the assembly ring of the breast shield extends through the assembly opening of the negative pressure generating portion to the outside of the milk discharge passage of the negative pressure generating portion to form a step.

4. The breast pump according to claim 3, wherein the bra comprises a limiting portion, wherein the limiting portion integrally extends from the peripheral wall of the mounting ring body in a direction perpendicular to the extending direction of the mounting ring body, and a gap is provided between the limiting portion and the shoulder ring body.

5. The breast pump according to claim 4, wherein the negative pressure forming portion has an embedding groove, the embedding groove is located outside the assembly opening, and the limiting portion has an embedding protrusion, the shape and size of the embedding protrusion match the shape and size of the embedding groove, wherein the embedding protrusion of the limiting portion is embedded in the embedding groove of the negative pressure forming portion.

6. The breast pump according to any one of claims 1 to 5, wherein the support 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 deformation part having a combining end and a deformation end corresponding to the combining end, the milk suction cavity, the assembly opening and the milk discharge channel of the negative pressure forming part 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 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.

7. The breast pump according to claim 6, wherein the negative pressure generating portion is detachably mounted to the supporting shell.

8. The breast pump according to claim 7, wherein the milk suction device further comprises a ball plunger, the ball plunger comprising a column part, a compression spring and a ball part, the column part having a column cavity and a cavity opening connected to the column cavity, the compression spring being compressibly arranged in the column cavity of the column part, the ball head part being movably arranged in the cavity opening of the column part, and the bottom of the ball head part abuts against the compression spring, and the top of the ball head part protrudes from the column part, wherein the column part of the ball plunger is fixedly mounted on the shell body of the support shell, and the ball head part protrudes from the mounting cavity of the shell body, wherein the outer side of the frame part of the negative pressure forming part has a retaining groove, when the negative pressure forming part is mounted on the support shell, the ball head part is retained in the retaining groove of the frame part, and the friction force generated between the ball head part and the peripheral wall of the frame part for forming the retaining groove prevents the negative pressure forming part from falling off from the support shell.

9. The breast pump according to claim 6, wherein the milk pumping device further comprises an air duct unit, the air duct unit comprising an air guide seat and a reversing seat, wherein the air guide seat has a first air duct extending laterally and a bottom plug hole and a top plug hole respectively connected to the first air duct, the top of the shell body of the supporting shell has a shell plug arm, the opening of the gas exchange channel is formed at the end surface of the shell plug arm, and the air guide seat is arranged at the top of the shell body in a manner that the shell plug arm is inserted into the bottom plug hole, wherein the reversing seat has a bottom plug arm, a side plug arm and a second air duct, one opening of the second air duct is formed at the end surface of the bottom plug arm, and the other opening is formed at the end surface of the side plug arm, and the bottom plug arm of the reversing seat is inserted into the top plug hole of the air guide seat.

10. The breast pump according to claim 9, wherein the bottom insertion arm of the reversing seat is detachably inserted into the top insertion hole of the air guide seat.

11. The breast pump according to claim 10, wherein the negative pressure forming unit comprises an outer cover shell and a receiving cavity, the outer cover shell has a positioning hole, the outer cover shell is fixedly mounted on the outer edge of the horn body of the supporting shell to form the receiving cavity between the supporting shell and the outer cover shell, the positioning hole of the outer cover shell is connected to the receiving cavity, wherein the air guide seat has a top boss, the opening of the top jack is formed on the end surface of the top boss, wherein the air guide seat is received in the receiving cavity of the negative pressure forming unit, and the top boss of the air guide seat extends to the positioning hole of the outer cover shell.

12. The breast pump according to claim 11, wherein the top of the shell body of the support shell has a positioning wall, the positioning wall surrounds the bottom of the air guide seat, and the inner wall of the positioning wall is in contact with the outer wall of the air guide seat.

13. The breast pump according to claim 11, wherein the outer cover shell comprises an outer shell and an anti-detachment cover, the positioning hole is formed in the anti-detachment cover, the outer shell has a shell channel, the anti-detachment cover is fixedly mounted on the shell channel of the outer shell, wherein the outer shell is fixedly mounted on the outer edge of the horn body of the support shell.

14. The breast pump according to claim 6, wherein the bottom of the shell body of the supporting shell has a mounting notch, the bottom of the frame part has an inner mounting arm and an outer mounting arm surrounding the inner mounting arm, an opening of the milk discharge channel is formed at an end surface of the inner mounting arm, the outer mounting arm is held in the mounting notch of the shell body, wherein the one-way valve is mounted on the inner mounting arm, and wherein the milk suction device further comprises a milk bottle, and the milk bottle is mounted on the outer mounting arm.

15. The breast pump according to claim 14, wherein the external mounting arm has a mounting groove extending in a circumferential direction and a guide groove extending in a height direction and connected to one end of the mounting groove, and the bottle mouth of the feeding bottle has a mounting protrusion, and the mounting protrusion of the feeding bottle can slide into the mounting groove through the guide groove of the external mounting arm.

16. A breast pumping device, characterized in that include: One-way valve; A flexible bra, wherein the bra comprises a shoulder ring, a fitting ring and a trumpet cover, wherein the fitting ring integrally extends from the inner edge of the shoulder ring to one side, and the trumpet cover integrally extends from the outer edge of the shoulder ring to the opposite direction; and A negative pressure forming unit, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and has a negative pressure chamber, 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 supporting shell has a gas exchange channel, the gas exchange channel is connected to the negative pressure chamber, the negative pressure forming part has a milk suction chamber and an assembly opening and a milk discharge passage respectively connected to the milk suction chamber, wherein the one-way valve is arranged on the negative pressure forming part to selectively open and close the milk discharge passage, wherein the assembly ring body of the bra is assembled on the assembly opening of the negative pressure forming part.

17. The breast pump device according to claim 16, wherein the assembly ring of the breast shield extends through the assembly opening of the negative pressure forming part to the outside of the milk discharge passage of the negative pressure forming part to form a step; The bra comprises a limiting portion, wherein the limiting portion integrally extends from the peripheral wall of the mounting ring body in a direction perpendicular to the extending direction of the mounting ring body, and a gap is provided between the limiting portion and the shoulder ring body; The negative pressure forming part has an embedding groove, which is located on the outside of the assembly opening, and the limiting part has an embedding protrusion, the shape and size of the embedding protrusion match the shape and size of the embedding groove, wherein the embedding protrusion of the limiting part is embedded in the embedding groove of the negative pressure forming part.

18. The milk suction device according to claim 16, wherein the support shell comprises a shell body and a horn body integrally extending outward from one end of the shell body, 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 deformation part having a combination end and a deformation end corresponding to the combination end, the milk suction cavity, the assembly opening and the milk discharge passage of the negative pressure forming part are formed in the deformation part, the skeleton part is combined with the combination 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; wherein the negative pressure forming portion is detachably mounted on the supporting shell; The milk pump device further comprises a ball plunger, which comprises a column part, a compression spring and a ball head part, the column part having a column cavity and a cavity opening connected to the column cavity, the compression spring being compressibly arranged in the column cavity of the column part, the ball head part being movably arranged in the cavity opening of the column part, and the bottom of the ball head part abuts against the compression spring, and the top of the ball head part protrudes from the column part, wherein the column part of the ball plunger is fixedly mounted on the shell body of the support shell, and the ball head part protrudes from the mounting cavity of the shell body, wherein the outer side of the skeleton part of the negative pressure forming part has a retaining groove, and when the negative pressure forming part is mounted on the support shell, the ball head part is retained in the retaining groove of the skeleton part, and the friction force generated between the ball head part and the peripheral wall of the skeleton part for forming the retaining groove prevents the negative pressure forming part from falling off from the support shell.

19. The milk suction device according to claim 16, wherein the support shell comprises a shell body and a horn body integrally extending outward from one end of the shell body, 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 deformation part having a combination end and a deformation end corresponding to the combination end, the milk suction cavity, the assembly opening and the milk discharge passage of the negative pressure forming part are formed in the deformation part, the skeleton part is combined with the combination 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; The milk pump device further comprises an airway unit, the airway unit comprises an air guide seat and a reversing seat, wherein the air guide seat has a first airway extending transversely and a bottom plug hole and a top plug hole respectively connected to the first airway, the top of the shell body of the supporting shell has a shell plug arm, the opening of the gas exchange channel is formed at the end surface of the shell plug arm, and the air guide seat is arranged on the top of the shell body in a manner that the shell plug arm is inserted into the bottom plug hole, wherein the reversing seat has a bottom plug arm, a side plug arm and a second airway, one opening of the second airway is formed at the end surface of the bottom plug arm, and the other opening is formed at the end surface of the side plug arm, and the bottom plug arm of the reversing seat is inserted into the top plug hole of the air guide seat; The bottom plug arm of the reversing seat is detachably inserted into the top plug hole of the air guide seat; The negative pressure forming unit comprises an outer cover shell and a receiving cavity, the outer cover shell has a positioning hole, the outer cover shell is fixedly mounted on the outer edge of the speaker body of the support shell to form the receiving cavity between the support shell and the outer cover shell, the positioning hole of the outer cover shell is connected to the receiving cavity, the air guide seat has a top boss, the opening of the top plug hole is formed on the end surface of the top boss, the air guide seat is received in the receiving cavity of the negative pressure forming unit, and the top boss of the air guide seat extends to the positioning hole of the outer cover shell; The top of the shell body of the supporting shell has a positioning wall, the positioning wall surrounds the bottom of the air guide seat, and the inner wall of the positioning wall is in contact with the outer wall of the air guide seat; The outer cover shell includes an outer shell and an anti-detachment cover, the positioning hole is formed in the anti-detachment cover, the outer shell has a shell channel, the anti-detachment cover is fixedly installed in the shell channel of the outer shell, wherein the outer shell is fixedly installed on the outer edge of the speaker body of the supporting shell.

20. The milk suction device according to claim 16, wherein the support shell comprises a shell body and a trumpet body integrally extending outward from one end of the shell body, 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 deformation part having a combination end and a deformation end corresponding to the combination end, the milk suction cavity, the assembly opening and the milk discharge passage of the negative pressure forming part are formed in the deformation part, the skeleton part is combined with the combination 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; The bottom of the shell body of the supporting shell has a mounting notch, the bottom of the frame part has an inner mounting arm and an outer mounting arm surrounding the inner mounting arm, an opening of the milk discharge channel is formed at the end surface of the inner mounting arm, the outer mounting arm is held in the mounting notch of the shell body, the one-way valve is mounted on the inner mounting arm, the milk suction device further comprises a milk bottle, and the milk bottle is mounted on the outer mounting arm; The external mounting arm has a clamping groove extending in the circumferential direction and a guide groove extending in the height direction and connected to one end of the clamping groove. The bottle mouth of the milk bottle has a clamping protrusion, and the clamping protrusion of the milk bottle can slide into the clamping groove through the guide groove of the external mounting arm.

21. A breast pumping device, characterized in that include: One-way valve; A flexible brassiere, wherein the brassiere comprises a flared bra shell; and A negative pressure forming unit, wherein the negative pressure forming unit comprises a supporting shell and a negative pressure forming part and has a negative pressure cavity, the supporting shell comprises a shell body and a horn 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, the negative pressure forming part comprises a deformation part and a frame part and has a milk suction cavity and a milk discharge passage connected to the milk suction cavity, the deformation part has a combining end and a deformation end corresponding to the combining end, the milk suction cavity and the milk discharge passage of the negative pressure forming part are formed in the deformation part, the frame part is combined with the combining end of the deformation part, the frame part is installed in the mounting opening of the shell body, the deformation part extends to the mounting cavity through the mounting opening, the negative pressure cavity is formed between the deformation part and the shell body, wherein the one-way valve is arranged in the frame part, and the one-way valve selectively opens and closes the milk discharge passage, wherein the horn cover body of the bra is arranged in the deformation part of the negative pressure forming part, and the outer edge of the horn cover body protrudes from the outer edge of the shell body.

22. The milking device according to claim 21, wherein the frame portion of the negative pressure generating part is detachably mounted to the shell body of the supporting shell.

23. The milk pumping device according to claim 22, wherein the milk pumping device further comprises a ball plunger, the ball plunger comprising a column part, a compression spring and a ball head part, the column part having a column cavity and a cavity opening connected to the column cavity, the compression spring being compressibly arranged in the column cavity of the column part, the ball head part being movably arranged in the cavity opening of the column part, and the bottom of the ball head part abuts against the compression spring, and the top of the ball head part protrudes from the column part, wherein the column part of the ball plunger is fixedly mounted on the shell body of the support shell, and the ball head part protrudes from the mounting cavity of the shell body, wherein the outer side of the frame part of the negative pressure forming part has a retaining groove, when the negative pressure forming part is mounted on the support shell, the ball head part is retained in the retaining groove of the frame part, and the friction force generated between the ball head part and the peripheral wall of the frame part for forming the retaining groove prevents the negative pressure forming part from falling off from the support shell.

24. A breast pumping device according to any one of claims 21 to 23, wherein the breast pumping device further comprises an air duct unit, the air duct unit comprising an air guide seat and a reversing seat, wherein the air guide seat has a first air duct extending laterally and a bottom plug hole and a top plug hole respectively connected to the first air duct, the supporting shell has a gas exchange channel, the top of the shell body has a shell insertion arm, the opening of the gas exchange channel is formed at the end surface of the shell insertion arm, the air guide seat is arranged on the top of the shell body in a manner that the shell insertion arm is inserted into the bottom plug hole, wherein the reversing seat has a bottom plug arm, a side plug arm and a second air duct, one opening of the second air duct is formed at the end surface of the bottom plug arm, and the other opening is formed at the end surface of the side plug arm, and the bottom plug arm of the reversing seat is inserted into the top plug hole of the air guide seat.

25. The breast pump device according to claim 24, wherein the bottom insertion arm of the reversing seat is detachably inserted into the top insertion hole of the air guide seat.

26. A breast pump device according to claim 25, wherein the negative pressure forming unit comprises an outer cover shell and a receiving cavity, the outer cover shell has a positioning hole, the outer cover shell is fixedly mounted on the outer edge of the horn body of the supporting shell to form the receiving cavity between the supporting shell and the outer cover shell, the positioning hole of the outer cover shell is connected to the receiving cavity, wherein the air guide seat has a top boss, the opening of the top plug hole is formed on the end surface of the top boss, wherein the air guide seat is received in the receiving cavity of the negative pressure forming unit, and the top boss of the air guide seat extends to the positioning hole of the outer cover shell.

27. The breast pump device according to claim 26, wherein the top of the shell body of the support shell has a positioning wall, the positioning wall surrounds the bottom of the air guide seat, and the inner wall of the positioning wall is in contact with the outer wall of the air guide seat.

28. The breast pump device according to claim 26, wherein the outer cover shell comprises an outer shell and an anti-detachment cover, the positioning hole is formed in the anti-detachment cover, the outer shell has a shell channel, the anti-detachment cover is fixedly mounted on the shell channel of the outer shell, wherein the outer shell is fixedly mounted on the outer edge of the horn body of the support shell.

29. The breast pump device according to any one of claims 21 to 23, wherein the bottom of the shell body of the supporting shell has a mounting notch, the bottom of the frame portion has an inner mounting arm and an outer mounting arm surrounding the inner mounting arm, an opening of the milk discharge channel is formed at an end surface of the inner mounting arm, the outer mounting arm is held in the mounting notch of the shell body, wherein the one-way valve is mounted on the inner mounting arm, and the breast pump device further comprises a milk bottle, which is mounted on the outer mounting arm.

30. The breast pump device according to claim 29, wherein the external mounting arm has a mounting groove extending in a circumferential direction and a guide groove extending in a height direction and connected to one end of the mounting groove, and the bottle mouth of the milk bottle has a mounting protrusion, and the mounting protrusion of the milk bottle can slide into the mounting groove through the guide groove of the external mounting arm.

31. A breast pump, characterized in that include: Breast pump host; and The breast pump device according to any one of claims 21 to 30, wherein the gas exchange channel of the support shell of the negative pressure generating unit of the breast pump device is connected to the breast pump host.

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