Breast pump

Abstract

Disclosed is a breast pump. The breast pump comprises a milk bowl assembly, a main unit, and a breast suction shield. A milk storage space is formed in the milk bowl assembly; the main unit is provided with a through hole penetrating through it in the thickness direction; the breast suction shield is provided with a narrow end and a wide end, and the narrow end of the breast suction shield is arranged in the through hole. The main unit is at least partially located between the wide end of the milk suction shield and the milk bowl assembly, and a diaphragm support is connected to the milk bowl assembly and extends to the milk storage space. By means of the above mode, the overall size of the breast pump can be reduced, and its structure is more compact, making it easy to carry.

Description

breast pump

[0001] Related applications

[0002] This application claims priority to Chinese patent numbers 202420650849.2, 202420664590.7, 202420651906.9, 202420651895.4, 202420650099.9, 202420656414.9, 202420670059.0 and 202420650116.9 filed on March 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The embodiments of the present application relate to the technical field of maternal and infant equipment, and in particular to a breast pump. Background Art

[0004] As society's awareness of the importance of breastfeeding continues to grow, and modern women's demand for a better work-life balance continues to grow, the market demand for breast pumps as a breastfeeding aid continues to expand. Existing breast pumps come in a variety of designs, designed to provide breastfeeding women with a convenient and comfortable milk extraction experience while ensuring effective milk storage and hygienic safety. Early breast pumps were mostly simple in structure and had a single function. For example, manual pump breast pumps relied on the user to manually squeeze the air bag or handle to generate negative pressure for milk extraction. Although the cost was low, the use process was cumbersome, and the efficiency and comfort were limited. With technological advancements, electric breast pumps have gradually become the mainstream of the market. The electric motor drives the negative pressure pump to generate stable suction, greatly improving milk extraction efficiency and user comfort.

[0005] With technological advancements, electric breast pumps have emerged. Using an electrically driven vacuum pump to generate stable suction, they significantly improve both efficiency and comfort, making them highly popular with users. However, existing electric breast pumps still have limitations in terms of structural design, size, and portability. Some products, due to their complex internal structures and bulky size, are difficult to carry, making them unsuitable for use by mothers on the go or working.

[0006] Application Contents

[0007] In view of the deficiencies in the prior art, the present application provides a breast pump that can solve the problem that electric breast pumps are not compact and have a large size.

[0008] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a breast pump, which includes: a milk bowl assembly, in which a milk storage space is formed; a main unit, in which a through hole is formed running through the thickness direction; a breast shield, in which the breast shield has a narrow end and a wide end, the narrow end of the breast shield is passed through the through hole, and the main unit is at least partially located between the wide end of the breast shield and the milk bowl assembly; and a diaphragm bracket, in which the diaphragm bracket is connected to the milk bowl assembly and extends into the milk storage space.

[0009] The breast pump further includes a milk suction duct connected to the milk bowl assembly and extending into the milk storage space. The milk suction duct is communicated with the inner space of the breast shield. The length of the milk suction duct extending into the milk storage space is less than the length of the diaphragm bracket.

[0010] Among them, the end portion of the milk suction duct away from the breast shield is provided with a milk outlet, and the milk outlet is used for the milk in the milk suction duct to flow into the milk storage space.

[0011] The sum of the lengths of the milk suction duct and the milk outlet is less than or equal to the length of the diaphragm support.

[0012] Among them, the milk bowl assembly includes a bowl body and a cover plate, the bowl body and the cover plate enclose a milk storage space, and the milk suction pipe and the diaphragm bracket are both connected to the cover plate.

[0013] The milk suction duct and the diaphragm bracket are connected to the cover plate as a whole.

[0014] The milk suction duct and the diaphragm support are arranged side by side.

[0015] The milk suction duct is located above the diaphragm bracket.

[0016] The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion. The through hole is provided on the longitudinal portion. The longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly. The first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and the second side surface of the milk bowl assembly contacts the transverse portion of the main unit. The first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly.

[0017] The breast pump also includes a diaphragm, which is used to be placed in the diaphragm bracket. The diaphragm divides the internal space of the diaphragm bracket into a first subspace and a second subspace. The first subspace is connected to the negative pressure interface of the host, and the second subspace is connected to the internal space of the milk suction duct. The diaphragm can be deformed in the internal space of the diaphragm bracket under the drive of the negative pressure provided by the host to transmit negative pressure.

[0018] The embodiment of the present application is to provide a breast pump including a bowl assembly, a main unit, and a breast shield. A milk storage space is formed in the bowl assembly, a through hole is formed on the main unit in the thickness direction, the breast shield has a narrow end and a wide end, the narrow end of the breast shield is passed through the through hole, the main unit is at least partially located between the wide end of the breast shield and the bowl assembly, the diaphragm bracket is connected to the bowl assembly and extends into the milk storage space, through the above manner, the thickness space occupied by the main unit, the bowl assembly, and the breast shield as a whole can be reduced, and the diaphragm bracket is connected to the bowl assembly and extends into the internal milk storage space of the bowl assembly, the diaphragm bracket does not occupy additional thickness space, further reducing the overall volume of the breast pump, and making it convenient to carry.

[0019] In view of the deficiencies in the prior art, the present application provides a breast pump that can solve the problems of large size and unstable connection of breast pumps.

[0020] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a breast pump, which includes: a main unit, which is used to provide negative pressure for sucking milk; a milk bowl assembly, which is used to hold milk and is arranged on a first side of the main unit; a breast shield, which has a narrow end and a wide end, and the inner diameter of the breast shield gradually increases from the narrow end to the wide end, and the wide end of the breast shield is arranged on a second side of the main unit away from the first side, and the breast shield is connected to the main unit.

[0021] The breast shield is detachably connected to the main unit.

[0022] The breast pump further comprises a milk suction duct connected to the milk bowl assembly, the milk suction duct extends into the milk storage space of the milk bowl assembly, and the narrow end of the breast shield is communicated with the end of the milk suction duct.

[0023] The main unit is formed with a through hole running through the thickness direction, the narrow end of the breast shield is inserted into the through hole, and the narrow end of the breast shield cooperates with the through hole to realize the connection between the breast shield and the main unit.

[0024] Among them, one of the outer wall of the narrow end and the inner wall of the through hole is provided with a groove, and the other is provided with a marble, and the marble cooperates with the groove to realize the connection between the breast shield and the host.

[0025] The narrow end is interference-fitted with the through hole to achieve the connection between the breast shield and the host.

[0026] Among them, one of the outer wall of the narrow end and the inner wall of the through hole is provided with a buckle, and the other is provided with a slot. The buckle cooperates with the slot to achieve the connection between the breast shield and the host.

[0027] Wherein, one of the main unit and the breast shield is provided with a positioning groove, and the other is provided with a positioning protrusion.

[0028] The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion. The through hole is provided on the longitudinal portion. The longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly. The first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and the second side surface of the milk bowl assembly contacts the transverse portion of the main unit. The first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly.

[0029] The end surface of the narrow end abuts against the end surface of the milk suction duct, so that the narrow end and the milk suction duct are in sealed communication.

[0030] The present embodiment of the present invention provides a breast pump comprising: a main unit for providing negative pressure for milk extraction; a milk bowl assembly for containing milk, the milk bowl assembly being disposed on a first side of the main unit; and a breast shield having a narrow end and a wide end, the inner diameter of the breast shield gradually increasing from the narrow end to the wide end, the wide end of the breast shield being disposed on a second side of the main unit, away from the first side, the breast shield being connected to the main unit. By disposing the breast shield and the milk bowl assembly on opposite sides of the main unit and disposing the breast shield connected to the main unit, the overall size of the breast pump can be reduced, and the connection between the breast pump and the main unit can also be designed to be more stable and reliable.

[0031] In view of the deficiencies in the prior art, the present application provides a breast pump that can solve the problems of uneven suction, uncomfortable wearing, and unstable breast pumps.

[0032] In order to solve the above technical problems, the present application adopts a technical solution: to provide a breast pump, the breast pump comprising: a breast shield, the breast shield having a wide end and a narrow end, the inner diameter of the breast shield gradually increasing from the narrow end to the wide end; a milk bowl assembly, a milk storage space formed in the milk bowl assembly; a milk suction duct, the milk suction duct is connected to the milk bowl assembly and extends into the milk storage space, the milk suction duct is communicated with the breast shield, and the milk storage space is used to receive milk flowing out of the milk suction duct; a main unit, used to provide negative pressure for milk suction in the milk suction duct; wherein, when the milk storage space is empty, the center of gravity of the breast pump is in the milk suction duct or in the narrow end of the breast shield.

[0033] A through hole is provided on the main unit, the breast shield is passed through the through hole, and the main unit is located between the wide end of the breast shield and the milk bowl assembly.

[0034] A through hole is provided on the main unit, and the center of gravity of the main unit is located in the through hole.

[0035] Among them, the main unit includes a shell and a negative pressure pump, a solenoid valve, a first battery and a second battery arranged in the shell. The negative pressure pump and the solenoid valve are both located below the through hole, and the first battery and the second battery are respectively located on the left and right sides of the through hole.

[0036] The host further includes a circuit board located in the shell, and the circuit board is located above the through hole.

[0037] The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion. The through hole is provided on the longitudinal portion. The longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly. The first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and the second side surface of the milk bowl assembly contacts the transverse portion of the main unit. The first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly.

[0038] The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion. The through hole is arranged on the longitudinal portion. The longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly. The first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and the second side surface of the milk bowl assembly contacts the transverse portion of the main unit. The first side surface and the second side surface are two adjacent sides of the milk bowl assembly. The negative pressure pump and the solenoid valve are arranged inside the transverse portion.

[0039] Among them, the negative pressure pump is a piezoelectric pump.

[0040] The milk bowl assembly includes a bowl body and a cover plate, the bowl body and the cover plate enclose a milk storage space, and the milk suction pipe is connected to the cover plate.

[0041] The milk suction duct and the cover plate are integrated.

[0042] The embodiment of the present application provides a breast pump comprising a breast shield having a wide end and a narrow end, the inner diameter of the breast shield gradually increasing from the narrow end to the wide end; a milk bowl assembly, a milk storage space formed therein; a milk duct connected to the milk bowl assembly and extending into the milk storage space, the milk duct being in communication with the breast shield, the milk storage space being used to receive milk flowing out of the milk duct; and a main unit for providing negative pressure into the milk duct for milk extraction; wherein, when the milk storage space is empty, the center of gravity of the breast pump is located within the milk duct or the narrow end of the breast shield. By means of the above method, the center of gravity of the breast pump is arranged within the milk duct or the narrow end of the breast shield, close to the center of the nipple, making the breast pump more stable and comfortable when worn on the human body, and the suction force more uniform.

[0043] The purpose of the present application is to provide a milk suction assembly and a breast pump, which are intended to solve the technical problem that milk easily flows from the milk guide channel into the negative pressure chamber.

[0044] In a first aspect, the present application provides a milk suction assembly, which is used for a breast pump, comprising: a fixing member; a diaphragm support, the diaphragm support is connected to the fixing member and has a negative pressure chamber; an outer milk guide member, which is connected to the fixing member and arranged side by side with the diaphragm support, and when the breast pump is placed on the breast, the outer milk guide member is located above the diaphragm support; the outer milk guide member is provided with a first milk guide channel, a milk flow hole connecting the first milk guide channel and the milk storage chamber of the breast pump, and a first air guide hole connecting the first milk guide channel and the negative pressure chamber; an inner milk guide member, which at least partially extends into the first milk guide channel, the inner milk guide member is provided with a second milk guide channel and a second air guide hole connecting the second milk guide channel, and the second milk guide channel is connected to the first milk guide channel; wherein the inner milk guide member and the inner side wall of the outer milk guide member enclose an air guide channel, the first air guide hole and the second air guide hole are both connected to the air guide channel, and the second air guide hole is located above the central axis of the second milk guide channel when the breast pump is placed on the breast.

[0045] As an embodiment, when the breast pump is placed on the breast, the angle between the line connecting the second air guide hole and the central axis of the second milk guide channel and the horizontal plane is 80° to 100°.

[0046] As an embodiment, the inner milk guide piece includes a milk guide body and a soft rubber ring; the milk guide body extends into the first milk guide channel, and is provided with a second milk guide channel and a first through-hole connected to the second milk guide channel; the soft rubber ring is arranged on the outer periphery of the milk guide body and is located between the milk guide body and the outer milk guide piece, the soft rubber ring is provided with a first annular groove and a second through-hole connected to the first annular groove, the outer milk guide piece seals the first annular groove to form an air guide channel, and the first through-hole and the second through-hole correspond to form a second air guide hole.

[0047] As an embodiment, a second annular groove is provided on the outer side wall of the milk guide body, and the soft rubber ring is embedded in the second annular groove.

[0048] As an embodiment, the second annular groove is formed at one end of the milk guide body extending into the interior of the first milk guide channel.

[0049] As an embodiment, the inner milk conducting member and the outer milk conducting member are detachably connected.

[0050] In one embodiment, the milk suction assembly further includes an elastic diaphragm and a negative pressure chamber cover, wherein the elastic diaphragm is circumferentially connected to the diaphragm support and extends into the negative pressure chamber, and the negative pressure chamber cover is disposed at the opening of the negative pressure chamber and seals the negative pressure chamber;

[0051] The negative pressure chamber cover is connected to the milk guide body and is integrally formed with the milk guide body.

[0052] As an embodiment, the milk suction assembly further includes a handle, which is connected to the milk guide body and is integrally formed with the milk guide body.

[0053] As an embodiment, the milk pump assembly further includes a container body, a sealing cover, a main body shell and a breast shield;

[0054] The sealing cover covers and seals the container body, and together with the container body, forms a milk storage cavity; the main body shell is arranged between the sealing cover and the breast shield, and the breast shield is used to cover the breast;

[0055] The fixing part is a sealing cover, a main unit shell or a breast shield, and the outer milk guide part and the diaphragm bracket both extend from the fixing part toward the direction close to the milk storage cavity.

[0056] In a second aspect, the present application provides a breast pump comprising the above-mentioned milk pumping assembly.

[0057] The milk extraction assembly and breast pump provided in the present application form an air guide channel, and provide a first air guide hole and a second air guide hole to communicate with the air guide channel, so that the negative pressure chamber is connected to the second milk guide channel, and negative pressure can be generated in the second milk guide channel, thereby achieving milk extraction; by arranging the second air guide hole above the central axis of the second milk guide channel, the milk in the second milk guide channel is not easily flowed into the air guide channel and the negative pressure chamber through the second air guide hole, thereby avoiding contamination of the negative pressure chamber and a decrease in the suction performance of the breast pump.

[0058] The purpose of the present application is to provide a breast pump assembly and a breast pump, which aim to solve the technical problem that a seal blocks the user from viewing the milk guide channel.

[0059] In a first aspect, the present application provides a milk suction assembly for use in a breast pump, comprising: a milk storage container, the milk storage container comprising a container body and a container cover, the container cover and the container body enclosing a milk storage cavity; a milk guide piece, the milk guide piece being connected to a side of the container cover facing the milk storage cavity or being connected to a fixing piece of the breast pump and extending through the container cover into the milk storage cavity, the milk guide piece having a milk guide channel; wherein the container cover is provided with a milk pouring port connected to the milk storage cavity, and the milk suction assembly further comprises a sealing piece, the sealing piece being used to seal the milk pouring port.

[0060] As an embodiment, when the breast pump is placed on the breast, the milk pouring port is located above the milk guide piece.

[0061] In one embodiment, the container cover includes a first plate and a second plate, wherein the second plate extends from the first plate in a direction gradually approaching the milk storage cavity and an angle between the second plate and the first plate is greater than 90° and less than 180°.

[0062] The milk guide piece is connected to the first plate body, and the milk pouring port is opened on the second plate body.

[0063] As an embodiment, one end of the sealing member detachably seals the milk pouring port, and the other end is connected to the container cover, and the sealing member and the container cover are integrally injection-molded.

[0064] As an embodiment, the milk storage container further includes a sealing ring, which is arranged between the container body and the container cover; one end of the sealing member detachably seals the milk pouring port, and the other end passes through the container cover and is connected to the sealing ring, and the sealing member, the sealing ring and the container cover are integrally injection molded.

[0065] As an embodiment, a milk outlet is provided at one end of the milk guide piece facing the milk storage cavity, and the milk outlet is used to connect the milk guide channel and the milk storage cavity.

[0066] As an embodiment, when the breast pump is placed on the breast, at least the upper half of the container body and at least the upper half of the milk guide are both made of optically transparent material.

[0067] In one embodiment, the milk pump assembly further includes a diaphragm bracket, which is connected to a side of the container cover facing the milk storage cavity or is connected to a fixing member of the breast pump and extends through the container cover into the milk storage cavity;

[0068] When the breast pump is placed on your breast, the diaphragm support is positioned underneath the milk guide.

[0069] As an embodiment, the milk pump assembly further includes a main body shell and a breast shield, the main body shell is arranged between the container cover and the breast shield, and the breast shield is used to cover the breast; the fixing part is the main body shell or the breast shield.

[0070] In a second aspect, the present application provides a breast pump.

[0071] A breast pump comprises the above-mentioned milk suction assembly.

[0072] The milk extraction assembly and breast pump provided by the present application, by arranging the milk pouring port on the container cover, since the container cover is not in the path of the user's view of the milk guide channel when the breast pump is sucking milk, the milk pouring port is also not in the path of the user's view of the milk guide channel. Therefore, the seal sealing the milk pouring port does not block the user's view, and the user can quickly and effectively detect problems with the breast pump during use based on the flow of milk. Therefore, the milk extraction assembly provided by the present application avoids the seal blocking the user's view of the milk guide channel, allowing the user to quickly and effectively detect problems with the breast pump during use, thereby improving the user experience.

[0073] The purpose of this application is to provide a diaphragm assembly and a breast pump, which aims to solve the technical problem of an excessive number of parts in a breast pump.

[0074] In a first aspect, the present application provides a diaphragm assembly for use in a breast pump, comprising: an elastic diaphragm having a cavity and an opening communicating with the cavity; a diaphragm cover removably covering the opening and having a first through-hole extending therethrough; and a connector having one end fixedly connected to the elastic diaphragm and the other end fixedly connected to the diaphragm cover. In one embodiment, the connector is configured to enable the diaphragm cover to be reversibly mounted to cover the opening.

[0075] As an embodiment, the connecting part includes a connecting portion, an embedded portion and a bendable portion; the bendable portion is connected between the connecting portion and the embedded portion and can be bent, the connecting portion is fixedly connected to the elastic diaphragm, a mounting groove is provided on the side of the diaphragm cover away from the cavity, and the embedded portion is embedded in the mounting groove; the first through hole is formed on the bottom wall of the mounting groove or on the diaphragm cover outside the area where the mounting groove is located.

[0076] As an embodiment, the connector and the elastic diaphragm are both made of soft rubber material, the diaphragm cover is made of hard rubber material, and the connector and the elastic diaphragm are integrally formed and / or the connector and the diaphragm cover are integrally formed.

[0077] As an embodiment, the elastic diaphragm includes a bottom wall, two long side walls and two short side walls; the two short side walls are arranged opposite each other and are respectively connected between the two long side walls, the bottom wall, the two long side walls and the two short side walls form a cavity, the two long side walls and the two short side walls at one end away from the bottom wall form an opening, and the bottom wall is arranged opposite to the opening; the connecting piece is fixedly connected to the end of one of the short side walls close to the opening.

[0078] In one embodiment, one of the long side walls is provided with an avoidance groove, which is used to avoid the milk guide channel of the breast pump, and the outer contour of the diaphragm cover matches the shape of the opening; and / or, the diaphragm assembly further includes a lug, which is connected to one end of the other short side wall close to the opening.

[0079] As an embodiment, the diaphragm cover includes a cover body and a limiting protrusion; the limiting protrusion is connected to one side of the cover body, the cover body is covered on the opening, the limiting protrusion extends into the cavity and abuts against the elastic diaphragm to limit the cover body; the connecting piece is fixedly connected to the side of the cover body away from the limiting protrusion.

[0080] As an embodiment, the limiting protrusion is annular; or, the limiting protrusion includes a plurality of protrusions arranged in an annular shape at intervals.

[0081] In a second aspect, the present application provides a breast pump comprising the above-mentioned diaphragm assembly.

[0082] As an embodiment, the breast pump also includes a milk suction component, a main unit and a breast shield; the milk suction component is provided with a negative pressure chamber and a milk conduction channel connected to the negative pressure chamber, the elastic diaphragm is arranged in the negative pressure chamber, and the milk conduction channel is used to conduct milk; the main unit is arranged between the milk suction component and the breast shield, and the breast shield is used to cover the breast; the first through hole is used to connect the cavity and the suction pump of the main unit.

[0083] The diaphragm assembly and breast pump provided herein are provided with a connector, one end of which is fixedly connected to the elastic diaphragm and the other end of which is fixedly connected to the diaphragm cover. When the diaphragm cover is removed from the opening of the elastic diaphragm, it remains connected to the elastic diaphragm via the connector. Therefore, the diaphragm cover and the elastic diaphragm do not separate into two independent components, thus preventing the diaphragm cover from being lost and reducing the number of independent parts of the breast pump. Therefore, the diaphragm assembly provided herein reduces the number of parts, speeds up assembly and disassembly, and reduces the chance of part loss.

[0084] The purpose of this application is to provide a milk pump assembly and a breast pump, which aims to solve the technical problem of an excessive number of parts in a breast pump.

[0085] In a first aspect, the present application provides a milk suction assembly, which is used in a breast pump, comprising: a milk storage container, the milk storage container comprising a container body and a container cover, the container cover and the container body enclosing a milk storage chamber; a milk guide piece and a negative pressure piece, the milk guide piece and the negative pressure piece are both connected to the side of the container cover facing the milk storage chamber or are penetrated through the container cover and extend into the milk storage chamber, the milk guide piece has a milk guide channel, the negative pressure piece has a negative pressure chamber connected to the milk guide channel, the milk guide piece or the negative pressure piece is further provided with a milk flow port connected to the milk storage chamber, the milk flow port is used to allow milk to flow from the milk guide channel or the negative pressure chamber into the milk storage chamber; a one-way valve, the one-way valve is connected to at least one of the container cover, the milk guide piece and the negative pressure piece and extends to the milk flow port, so as to allow milk in the milk guide channel to flow to the milk storage chamber in one direction.

[0086] As an embodiment, the one-way valve is a component made of soft material, the container cover, the milk guide piece and the negative pressure piece are all components made of hard material, and the one-way valve is fixedly connected to at least one of the container cover, the milk guide piece and the negative pressure piece through an integrated injection molding process.

[0087] As an embodiment, the milk guide member and the negative pressure member are arranged side by side and share a common wall, and the milk flow outlet is formed on the side of the negative pressure member away from the milk guide member; when the breast pump is placed on the breast, the negative pressure member is located below the milk guide member; one end of the one-way valve is fixedly connected to the connection between the negative pressure member and the milk guide member, and the other end extends to the milk flow outlet.

[0088] As an embodiment, the negative pressure part includes a main body and a clamping part; the main body and the milk guide part are arranged side by side and share a common wall, and are provided with a negative pressure chamber and a milk flow port, and the clamping part is connected to the side of the main body facing away from the negative pressure chamber and is arranged close to the milk flow port; the clamping part and the main body are enclosed to form a clamping groove for the one-way valve to be inserted and limited.

[0089] As an embodiment, the one-way valve includes a fixing portion, a shielding portion and an inserting portion; the inserting portion is connected between the fixing portion and the shielding portion, and is used to be inserted into the negative pressure piece or the milk guide piece near the milk flow outlet to limit the shielding portion; the fixing portion is fixedly connected to at least one of the container cover, the milk guide piece and the negative pressure piece, and the shielding portion is used to shield the milk flow outlet.

[0090] As an embodiment, the fixing portion includes two arms, and the two arms are respectively connected to two ends of the plug-in portion.

[0091] As an embodiment, the one-way valve is a single-piece one-way valve.

[0092] As an embodiment, the milk storage container further includes a sealing ring and a sealing plug; the sealing ring is arranged between the container body and the container cover and is used to seal the milk storage cavity; the milk storage container is provided with a milk pouring port connected to the milk storage cavity, one end of the sealing plug detachably seals the milk pouring port, and the other end passes through the container cover and is connected to the sealing ring; the sealing plug and the sealing ring are at least integrally injection-molded with the container cover.

[0093] As an embodiment, the milk pump assembly further includes a main body shell and a breast shield; the breast shield includes a first side portion and a second side portion arranged opposite to the first side portion, the first side portion is used to cover the breast, and the main body shell is arranged between the container cover and the second side portion.

[0094] In a second aspect, the present application provides a breast pump comprising the above-mentioned milk pumping assembly.

[0095] The breast pump assembly and breast pump provided by the present application connect the one-way valve to at least one of the container cover, the milk guide, and the negative pressure component. Therefore, when the breast pump assembly is disassembled (for example, when the components of the breast pump assembly are disassembled for cleaning), the one-way valve remains connected to at least one of the container cover, the milk guide, and the negative pressure component. This significantly reduces the chance of the one-way valve being lost, reduces the number of independent components of the breast pump assembly, and speeds up assembly and disassembly. Therefore, the breast pump assembly provided by the present application reduces the number of components, speeds up assembly and disassembly, and reduces the chance of component loss.

[0096] In view of the deficiencies in the prior art, the present application provides a breast pump that can improve the problem of heating of the breast pump host.

[0097] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a breast pump, which includes: a milk bowl assembly, a milk storage space is formed inside the milk bowl assembly; a breast shield, the breast shield has a wide end and a narrow end, and the inner diameter of the breast shield gradually increases from the narrow end to the wide end; a main unit, the main unit includes a negative pressure pump, the negative pressure pump is used to provide negative pressure for the breast pump to suck milk; a heat sink, the heat sink is at least partially arranged between the negative pressure pump and the milk bowl assembly.

[0098] The main unit includes a transverse part and a longitudinal part bent and connected to the transverse part. The first side of the milk bowl assembly contacts the longitudinal part of the main unit, and the second side of the milk bowl assembly contacts the transverse part of the main unit. The first side and the second side are two adjacent sides of the milk bowl assembly.

[0099] The negative pressure pump is located in the transverse part of the main unit, a mounting hole is provided on a side surface of the transverse part close to the milk bowl assembly, and the heat sink is at least partially provided in the mounting hole.

[0100] The heat sink includes a first part and a second part that is bent and connected to the first part. The first part is arranged between the negative pressure pump and the milk bowl assembly. The first part and the second part are respectively arranged on two adjacent sides of the negative pressure pump.

[0101] Among them, an assembly step is provided on one side of the heat sink close to the milk bowl assembly, and the assembly step cooperates with the mounting hole of the transverse part to limit the heat sink within the transverse part.

[0102] The heat sink is exposed through the mounting hole, and the heat sink is in contact with the milk bowl assembly when the milk bowl assembly and the main machine are assembled.

[0103] Wherein, the heat sink is made of metal.

[0104] The main unit is formed with a through hole running through the thickness direction, the narrow end of the breast shield is passed through the through hole, and the main unit is at least partially located between the wide end of the breast shield and the milk bowl assembly.

[0105] The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion. The through hole is provided on the longitudinal portion, and the longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly.

[0106] Among them, the negative pressure pump is a piezoelectric pump.

[0107] The embodiment of the present application provides a breast pump comprising a bowl assembly, a breast shield, a main unit, and a heat sink. The bowl assembly defines a milk storage space. The breast shield has a wide end and a narrow end, and the inner diameter of the breast shield gradually increases from the narrow end to the wide end. The main unit includes a negative pressure pump, which is used to provide negative pressure for the breast pump to suck milk. The heat sink is at least partially disposed between the negative pressure pump and the bowl assembly. By disposing the heat sink between the negative pressure pump and the bowl assembly, the heat from the negative pressure pump is transferred to the gap between the bowl assembly and the main unit, where it is diffused into the air, or the heat is transferred to the bowl assembly, thereby effectively alleviating the problem of main unit heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0108] FIG1 is a schematic structural diagram of a breast pump according to an embodiment of the present application;

[0109] FIG2 is a schematic diagram of the disassembled structure of a breast pump according to an embodiment of the present application;

[0110] FIG3 is a schematic cross-sectional view of a breast pump according to an embodiment of the present application with the breast shield and the main unit removed;

[0111] FIG4 is a schematic structural diagram of a cover plate, a milk suction duct, and a diaphragm support of a breast pump according to an embodiment of the present application;

[0112] FIG5 is a schematic diagram of the disassembled structure of the milk bowl assembly and the main unit of a breast pump according to an embodiment of the present application;

[0113] FIG6 is a schematic structural diagram of a breast pump according to an embodiment of the present application;

[0114] FIG7 is a schematic diagram of the exploded structure of a breast pump according to an embodiment of the present application;

[0115] FIG8 is a schematic diagram of the exploded structure of a main unit and a breast shield according to an embodiment of the present application;

[0116] FIG9 is a schematic diagram of the front structure of a host according to an embodiment of the present application;

[0117] FIG10 is a schematic structural diagram of a breast shield according to an embodiment of the present application;

[0118] FIG11 is a schematic diagram of the exploded structure of a main unit and a milk bowl assembly according to an embodiment of the present application;

[0119] FIG12 is a schematic cross-sectional view of a breast pump according to an embodiment of the present application with the breast shield and the main unit removed;

[0120] FIG13 is a schematic structural diagram of a cover plate, a milk suction duct, and a diaphragm support according to an embodiment of the present application;

[0121] FIG14 is a schematic structural diagram of a breast pump according to an embodiment of the present application;

[0122] FIG15 is a schematic diagram of the disassembled structure of a breast pump according to an embodiment of the present application;

[0123] FIG16 is a schematic diagram of the internal structure of a breast pump main unit with the outer shell removed according to an embodiment of the present application;

[0124] FIG17 is a schematic cross-sectional view of a breast pump according to an embodiment of the present invention with the main unit and breast shield removed;

[0125] FIG18 is a schematic structural diagram of a cover plate, a milk suction duct, and a diaphragm support according to an embodiment of the present application;

[0126] FIG19 is a schematic diagram of the disassembled structure of the main unit and milk bowl assembly according to an embodiment of the present application;

[0127] FIG20 is a schematic structural diagram of a breast pump provided by an embodiment of the present application;

[0128] FIG21 is an exploded view of the breast pump shown in FIG20 ;

[0129] FIG22 is a cross-sectional view of the breast pump shown in FIG20 with the main body housing and breast shield removed;

[0130] FIG23 is a schematic diagram of the assembly structure of the diaphragm support, the outer milk guide member and the sealing cover provided in one embodiment of the present application from one perspective;

[0131] FIG24 is a schematic diagram of the assembly structure of the diaphragm support, the outer milk guide member and the sealing cover provided in one embodiment of the present application from another perspective;

[0132] FIG25 is a schematic diagram of the assembly structure of the inner milk guide, the negative pressure chamber cover and the handle provided in one embodiment of the present application from one perspective;

[0133] FIG26 is a schematic diagram of the assembly structure of the inner milk guide, the negative pressure chamber cover, and the handle provided in one embodiment of the present application from another perspective;

[0134] FIG27 is a schematic structural diagram of a breast pump provided by an embodiment of the present application;

[0135] FIG28 is an exploded view of the breast pump shown in FIG27 ;

[0136] FIG29 is a cross-sectional view of the breast pump shown in FIG27 with the main body housing and breast shield removed.

[0137] FIG30 is a schematic diagram of the assembly structure of a container cover, a milk guide, and a diaphragm support provided by an embodiment of the present application from one perspective;

[0138] FIG31 is a schematic diagram of the assembly structure of the container cover, milk guide member, and diaphragm support provided by one embodiment of the present application from another perspective;

[0139] FIG32 is a schematic structural diagram of a diaphragm assembly provided by one embodiment of the present application when the diaphragm cover is in a closed state;

[0140] FIG33 is a schematic structural diagram of a diaphragm assembly provided by one embodiment of the present application when the diaphragm cover is in an open state;

[0141] FIG34 is an exploded view of the diaphragm assembly shown in FIG33;

[0142] FIG35 is a schematic structural diagram of the diaphragm assembly shown in FIG33 without the diaphragm cover;

[0143] FIG36 is a schematic structural diagram of a diaphragm cover provided by an embodiment of the present application from one perspective;

[0144] FIG37 is a schematic structural diagram of a diaphragm cover provided by an embodiment of the present application from another perspective;

[0145] FIG38 is a schematic structural diagram of a breast pump provided by an embodiment of the present application;

[0146] FIG39 is an exploded view of the breast pump shown in FIG38;

[0147] FIG40 is a schematic structural diagram of a breast pump provided by an embodiment of the present application;

[0148] FIG41 is a cross-sectional view of a milk storage container, a milk guide member, and a negative pressure member provided in one embodiment of the present application;

[0149] FIG42 is a schematic diagram of the assembled structure of a milk storage container with the milk guide member and the negative pressure member removed from the container body according to an embodiment of the present application;

[0150] FIG43 is a schematic diagram of the assembly structure of a container cover, a milk guide member, and a negative pressure member provided by an embodiment of the present application from one perspective;

[0151] FIG44 is a schematic diagram of the assembly structure of the container cover, milk guide member, and negative pressure member provided in one embodiment of the present application from another perspective;

[0152] FIG45 is a schematic structural diagram of a one-way valve provided in one embodiment of the present application;

[0153] FIG46 is a schematic structural diagram of a breast shield provided by an embodiment of the present application;

[0154] FIG47 is a schematic structural diagram of a breast pump according to an embodiment of the present application;

[0155] FIG48 is a schematic diagram of the exploded structure of a breast pump according to an embodiment of the present application;

[0156] FIG49 is a schematic diagram of the exploded structure of a breast pump main unit and a heat sink according to an embodiment of the present application;

[0157] Figure 50 is a schematic cross-sectional structural diagram of the transverse portion of a breast pump main unit according to an embodiment of the present application. DETAILED DESCRIPTION

[0158] In this application, the terms "disposed," "provided with," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0159] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "radial", "circumferential", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0160] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0161] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0162] Please refer to Figures 1-5. Figure 1 is a schematic diagram of the structure of a breast pump according to an embodiment of the present application. Figure 2 is a schematic diagram of the disassembled structure of a breast pump according to an embodiment of the present application. Figure 3 is a schematic diagram of the cross-sectional structure of a breast pump according to an embodiment of the present application with the breast shield and main unit removed. Figure 4 is a schematic diagram of the structure of the cover plate, milk suction duct, and diaphragm support of a breast pump according to an embodiment of the present application. Figure 5 is a schematic diagram of the disassembled structure of the milk bowl assembly and main unit of a breast pump according to an embodiment of the present application.

[0163] In this embodiment, a breast pump includes a bowl assembly 10, a main unit 20, a breast shield 30, and a diaphragm support 40. A milk storage space 13 is formed within the bowl assembly 10. The main unit 20 has a through hole 221 extending through its thickness. The breast shield 30 has a narrow end and a wide end, with the narrow end of the breast shield 30 extending through the through hole 221. The main unit 20 is at least partially positioned between the wide end of the breast shield 30 and the bowl assembly 10. The diaphragm support 40 is connected to the bowl assembly 10 and extends into the milk storage space 13.

[0164] In this embodiment, the milk bowl assembly 10 serves as a milk storage unit. A dedicated milk storage space 13 is provided within the milk bowl assembly 10 for collecting and temporarily storing expressed milk. The main unit 20 is provided with a through hole 221 extending through its thickness. This through hole 221 not only helps reduce the weight of the main unit 20 and saves material, but also provides space for the layout of other components, contributing to the overall miniaturization of the structure.

[0165] In this embodiment, the main unit 20 serves as the breast pump's core power and control unit. It integrates a vacuum pump, control circuitry, batteries, solenoid valves, and other components. A through-hole 221 runs through the main unit 20's thickness. This through-hole 221 not only reduces the main unit 20's weight and saves material, but also provides space for the layout of other components, contributing to the overall miniaturization of the structure.

[0166] The wide end of the breast shield 30 is intended to contact the user's breast. The breast shield 30 has a narrow end and a wide end. From the narrow end to the wide end, the narrow end is at least partially inserted into the through-hole 221 of the main unit 20, ensuring a tight fit with the main unit 20. Furthermore, the main unit 20 is at least partially positioned between the wide end of the breast shield 30 and the bowl assembly 10. This arrangement helps maintain the overall structural stability of the breast pump and ensures effective connection and functional coordination between the main unit 20, the breast shield 30, and the bowl assembly 10 during the expression process.

[0167] The diaphragm support 40 is connected to the milk bowl assembly 10 and extends into the milk storage space 13. A negative pressure chamber is formed in the diaphragm support, and the negative pressure chamber of the diaphragm support 40 is used to place the diaphragm 60, which will be described in detail below.

[0168] In the embodiment of the present application, the above-mentioned method can reduce the thickness space occupied by the main unit 20, the milk bowl assembly 10, and the breast shield 30 as a whole, and the diaphragm bracket 40 is connected to the milk bowl assembly 10 and extends to the milk storage space 13 inside the milk bowl assembly 10. The diaphragm bracket 40 does not occupy additional thickness space, further reducing the overall volume of the breast pump and making it convenient to carry.

[0169] In this embodiment, the breast pump may further include a milk suction duct 50 connected to the milk bowl assembly 10 and extending into the milk storage space 13. The milk suction duct 50 is connected to the internal space of the breast shield 30. The length of the milk suction duct extending into the milk storage space 13 is less than the length of the diaphragm support 40.

[0170] In this embodiment, the suction duct 50 is connected to the bowl assembly 10 and extends into the milk storage space 13, communicating with the interior of the breast shield 30. The suction duct 50 serves as a channel for milk to flow from the breast shield 30 to the milk storage space 13. It ensures that milk flows smoothly and efficiently from the breast into the milk storage space 13 of the bowl assembly 10 under negative pressure, preventing milk leakage or blockage during the transfer process. The suction duct 50 communicates with the interior of the breast shield 30. The negative pressure generated during milk extraction directly acts on the interior of the breast shield 30, encouraging milk to flow through the suction duct 50 into the milk storage space 13. This design ensures a consistent and stable milk extraction process. The length of the suction duct 50 extending into the milk storage space 13 is shorter than the length of the diaphragm support 40. This design contributes to a more compact overall structure, reducing space usage and enhancing portability. A shorter suction duct 50 reduces the likelihood of milk residue in the duct, facilitating cleaning and reducing the risk of bacterial growth.

[0171] Optionally, a milk outlet 51 is provided at one end of the milk duct 50 away from the breast shield 30. The milk outlet 51 is used to circulate milk in the milk duct 50 into the milk storage space 13. Providing the milk outlet 51 at the end of the milk duct 50 facilitates cleaning of the milk outlet 51. The location of the milk outlet 51 is more obvious, making it easier for the user to observe the milk flow, and providing effective feedback on the milk flow status.

[0172] In one embodiment, the combined length of the milk duct 50 and the milk outlet 51 is less than or equal to the length of the diaphragm support 40. By ensuring that the combined length of the milk duct 50 and the milk outlet 51 does not exceed the length of the diaphragm support 40, the overall structure of the breast pump can be kept compact. This can reduce the size of a portable breast pump, making it more convenient to carry and use.

[0173] In one embodiment, the milk bowl assembly 10 includes a bowl body 11 and a cover plate 12. The bowl body 11 and the cover plate 12 enclose a milk storage space 13, and the milk suction duct 50 and the diaphragm support 40 are both connected to the cover plate 12. The bowl body 11 can be configured to be at least partially transparent, so that the user can observe the milk in the milk suction duct 50 or the milk outflow from the milk outlet 51 through the bowl body 11, or to facilitate the user to align the nipple when wearing the breast pump. In some embodiments, a sealing ring can be provided between the bowl body 11 and the cover plate 12 to ensure the sealing between the bowl body 11 and the cover plate 12 and prevent milk from overflowing from the milk outlet space 13.

[0174] In one embodiment, the milk duct 50 and the diaphragm support 40 are integrally connected to the cover 12. In some embodiments, the milk duct 50 can also be configured to be detachably connected to the cover 12. Similarly, the milk duct 50 can also be configured to be detachably connected to the cover 12.

[0175] In one embodiment, the milk suction duct 50 and the diaphragm support 40 are arranged side by side. By arranging the milk suction duct 50 and the diaphragm support 40 side by side, the thickness space occupied by the two can be further reduced, and the two share the thickness space, thereby making the breast pump lighter and thinner.

[0176] In one embodiment, the milk duct 50 is located above the diaphragm support 40. Positioning the milk duct 50 above the diaphragm support 40 facilitates observation of conditions within the milk duct 50, as the milk duct 50 is not obscured by the diaphragm support 40. The milk duct 50 is at least partially made of a light-transmissive material, making it easier to observe conditions within the milk duct 50, such as milk flow and whether the nipple channel is aligned when the user wears the device.

[0177] In one embodiment, the main unit 20 includes a transverse portion 21 and a longitudinal portion 22 bent and connected to the transverse portion 21. A through hole 221 is provided in the longitudinal portion 22. The longitudinal portion 22 is located between the wide end of the breast shield 30 and the milk bowl assembly 10. The first side surface S1 of the milk bowl assembly 10 contacts the longitudinal portion 22 of the main unit 20, and the second side surface S2 of the milk bowl assembly 10 contacts the transverse portion of the main unit 20. The first side surface S1 and the second side surface S2 are adjacent sides of the milk bowl assembly 10. By forming an L-shaped step on the main unit 20, positioning the milk bowl assembly 10 on this step facilitates the layout of the internal components of the main unit 20 and makes it easier to secure the milk bowl assembly 10. The large contact area between the main unit 20 and the milk bowl assembly 10 also facilitates heat dissipation from the main unit 20.

[0178] In one embodiment, the breast pump further includes a diaphragm 60, which is positioned within the diaphragm support 40. The diaphragm 60 divides the interior space of the diaphragm support 40 into a first subspace and a second subspace. The first subspace communicates with the negative pressure interface of the main unit 20, and the second subspace communicates with the interior space of the milk duct 50. Driven by the negative pressure provided by the main unit 20, the diaphragm 60 deforms within the interior space of the diaphragm support 40 to transmit the negative pressure to the milk duct 50, thereby generating the negative pressure required for milk extraction. The diaphragm 60 is made of a flexible material and is primarily used to prevent negative pressure from causing milk to flow back into the main unit 20 and damage the main unit 20.

[0179] In one embodiment, the breast pump further includes a one-way valve 70, which is disposed at the milk outlet 51. The one-way valve 70 is used to ensure that milk in the milk suction duct 50 flows in one direction to the milk storage space 13. For example, the one-way valve may be a disc-type one-way valve, or in other embodiments, a duckbill valve may be used. For example, when negative pressure is applied to the milk suction duct 50, the one-way valve 70 is pressed against the milk outlet 51 by suction, thereby preventing milk in the milk storage space 13 from flowing back. When the suction stops, the milk, under the action of gravity, pushes open the one-way valve 70 and flows into the milk storage space 13.

[0180] The embodiment of the present application is to provide a breast pump including a bowl assembly, a main unit, and a breast shield. A milk storage space is formed in the bowl assembly, a through hole is formed on the main unit in the thickness direction, the breast shield has a narrow end and a wide end, the narrow end of the breast shield is passed through the through hole, the main unit is at least partially located between the wide end of the breast shield and the bowl assembly, the diaphragm bracket is connected to the bowl assembly and extends into the milk storage space, through the above manner, the thickness space occupied by the main unit, the bowl assembly, and the breast shield as a whole can be reduced, and the diaphragm bracket is connected to the bowl assembly and extends into the internal milk storage space of the bowl assembly, the diaphragm bracket does not occupy additional thickness space, further reducing the overall volume of the breast pump, and making it convenient to carry.

[0181] Please refer to Figures 6, 7 and 12 in combination. Figure 6 is a structural diagram of a breast pump according to an embodiment of the present application; Figure 7 is a schematic diagram of the exploded structure of a breast pump according to an embodiment of the present application; and Figure 12 is a schematic diagram of the cross-sectional structure of a breast pump according to an embodiment of the present application with the breast shield and the main unit removed.

[0182] In this embodiment, the breast pump may include: a milk bowl assembly 10a, a main unit 20a, and a breast shield 30a.

[0183] The main unit 20a is used to provide negative pressure for breastfeeding. The milk bowl assembly 10a is used to hold milk and is located on a first side of the main unit 20a. The breast shield 30a has a narrow end and a wide end, and the inner diameter of the breast shield 30a gradually increases from the narrow end to the wide end. The wide end of the breast shield 30a is located on a second side of the main unit 20a, away from the first side, and the breast shield 30a is connected to the main unit 20a.

[0184] In the above manner, the breast shield 30a and the milk bowl assembly 10a are respectively arranged on two opposite sides and the breast shield 30a is arranged to be connected to the main unit 20a, so that the overall size of the breast pump can be made smaller. Under the premise of this design structure, the connection between the breast pump and the main unit can also make the connection structure more stable and reliable compared to the case where the main unit and the milk bowl assembly 10a are fixed.

[0185] In one embodiment, the breast shield 30a is detachably connected to the main unit 20a. The connection between the breast shield 30a and the main unit 20a can utilize complementary detachable connection structures, such as a buckle on one of the breast shield 30a and a slot on the other; internal threads on one of the breast shield 30a and external threads on the other; or a ball on one of the breast shield 30a and a slot on the other. For details, please refer to the following description.

[0186] In one embodiment, the breast pump further includes a milk duct 50a connected to the bowl assembly 10a. The milk duct 50a extends into the milk storage space 13a of the bowl assembly 10a. The narrow end of the breast shield 30a communicates with the end of the milk duct 50a. The breast shield 30a can achieve communication by being inserted into the milk duct 50a or by having its narrow end abut against the end of the milk duct 50a.

[0187] In one embodiment, the main unit 20a is formed with a through hole 221a extending through the thickness thereof, and the narrow end of the breast shield 30a is inserted into the through hole 221a. The narrow end of the breast shield 30a cooperates with the through hole to achieve the connection between the breast shield 30a and the main unit 20a.

[0188] In one embodiment, one of the outer wall of the narrow end of the breast shield 30a and the inner wall of the through hole 221a is provided with a groove, and the other is provided with a marble. The marble cooperates with the groove to achieve the connection between the breast shield 30a and the host 20a.

[0189] Please refer to Figure 8, which is a schematic diagram of the exploded structure of the main unit and breast shield according to one embodiment of the present application. In this embodiment, marbles 91a and 92a are disposed on the inner wall of through-hole 221a, and grooves 101a and 102a are disposed on the outer wall of the narrow end of breast shield 30a. Marble 91a engages with groove 101a, and marble 92a engages with groove 102a. Marbles 91a and 92a are positioned opposite each other, located on opposite sides of the inner wall of through-hole 221a. Correspondingly, grooves 91a and 92a are located on opposite sides of the narrow end of breast shield 30a. By providing a set of two marbles and two corresponding grooves to connect the main unit 20a and breast shield 30a, the connection is more secure and disassembly is smooth and easy.

[0190] In another embodiment, the narrow end of the breast shield 30a and the through hole 221a can be connected to the main unit 20a through an interference fit. Specifically, the outer diameter of the narrow end of the breast shield 30a can be slightly larger than the inner diameter of the through hole 221a, and the breast shield 30a can be inserted into the through hole 221a to achieve an interference fit and connect the breast shield 30a to the main unit 20a. Alternatively, the outer diameter of the narrow end can be smaller than the inner diameter of the through hole 221a, and the outer diameter of the breast shield 30a gradually increases from the narrow end to the wide end, achieving an interference fit during insertion.

[0191] In some embodiments, one of the outer wall of the narrow end of the breast shield 30a and the inner wall of the through hole 221a is provided with a buckle, and the other is provided with a slot, and the buckle and the slot cooperate to achieve the connection between the breast shield 30a and the host 20a.

[0192] In some embodiments, the breast shield 30a and the main unit 20a can be fixed by setting a connecting structure such as a snap-on connection at any position of the main unit 20a. Fixation can be achieved by combining multiple structures and multiple position fixing methods, which is not limited in the embodiments of the present application.

[0193] 9 and 10 , FIG9 is a front structural diagram of a main unit according to an embodiment of the present application; FIG10 is a structural diagram of a breast shield according to an embodiment of the present application.

[0194] Optionally, one of the main unit 20a and the breast shield 30a may be provided with a positioning groove, while the other may be provided with a positioning protrusion. In this embodiment, the positioning groove 111a is provided on the main unit 20a, specifically, outside the through-hole 221a. The positioning groove 111a communicates with the through-hole 221a, forming a notch-shaped positioning groove 111a. The positioning protrusion 112a is provided on the breast shield 30a. Because the connection structures on the main unit 20a and the breast shield 30a are located in specific locations, the positioning groove 111a and the positioning protrusion 112a facilitate user positioning and installation.

[0195] Refer to FIG6 , which is a schematic diagram of the exploded structure of the main unit and milk bowl assembly according to an embodiment of the present application.

[0196] In one embodiment, the main unit 20a includes a transverse portion 21a and a longitudinal portion 22a that is bent and connected to the transverse portion 21a. A through hole 221a is provided in the longitudinal portion 22a. The longitudinal portion 22a is located between the wide end of the breast shield 30a and the milk bowl assembly 10a. The first side 81a of the milk bowl assembly 10a contacts the longitudinal portion 22a of the main unit 20a, and the second side 82a of the milk bowl assembly 10a contacts the transverse portion of the main unit 20a. The first side 81a and the second side 82a are adjacent sides of the milk bowl assembly 10a. By forming an L-shaped step on the main unit 20a, positioning the milk bowl assembly 10 on this step facilitates the layout of the internal components of the main unit 20a and makes it easier to secure the milk bowl assembly 10a. The large contact area between the main unit 20a and the milk bowl assembly 10a also facilitates heat dissipation from the main unit 20a.

[0197] Optionally, the narrow end of the breast shield 30a abuts the end of the suction duct 50a, thereby providing a sealed connection between the narrow end and the suction duct 50a. The narrow end can be provided with a soft rubber portion, or the suction duct 50a can be provided with a soft rubber portion. This can be achieved by integrally molding a soft rubber portion with a hard rubber portion, or by overlaying a soft rubber portion onto a hard rubber portion. Thus, when the narrow end abuts the end of the suction duct 50a, a sealed connection is achieved, preventing milk leakage.

[0198] As shown in Figure 7, a milk storage space 13a is formed within the milk bowl assembly 10a. The main unit 20a is formed with a through-hole 221a extending through its thickness. The breast shield 30a has a narrow end and a wide end, with the narrow end of the breast shield 30a extending through the through-hole 221a. The main unit 20a is at least partially positioned between the wide end of the breast shield 30a and the milk bowl assembly 10a. A diaphragm support 40a is connected to the milk bowl assembly 10a and extends into the milk storage space 13a.

[0199] In this embodiment, the milk bowl assembly 10a serves as a milk storage unit. A dedicated milk storage space 13a is provided within the milk bowl assembly 10a for collecting and temporarily storing expressed milk. The main unit 20a is provided with a through hole 221a extending through its thickness. This through hole 221a not only helps reduce the weight of the main unit 20 and saves material, but also provides space for the layout of other components, contributing to the overall miniaturization of the structure.

[0200] In this embodiment, the main unit 20a serves as the breast pump's core power and control unit. It integrates a vacuum pump, control circuitry, batteries, a solenoid valve, and other components. A through-hole 221a runs through the main unit 20a's thickness. This through-hole 221a not only reduces the main unit 20a's weight and saves material, but also provides space for the layout of other components, contributing to the overall miniaturization of the structure.

[0201] The wide end of the breast shield 30a is intended to contact the user's breast. The breast shield 30a has a narrow end and a wide end. From the narrow end to the wide end, the narrow end is at least partially inserted into the through-hole 221a of the main unit 20a, ensuring a tight fit with the main unit 20a. Furthermore, the main unit 20a is at least partially positioned between the wide end of the breast shield 30a and the bowl assembly 10a. This arrangement helps maintain the overall structural stability of the breast pump and ensures effective connection and functional coordination between the main unit 20a, the breast shield 30a, and the bowl assembly 10a during the expression process.

[0202] As shown in Figure 8, Figure 8 is a schematic diagram of the cover plate, milk duct, and diaphragm support structure according to one embodiment of the present application. The diaphragm support 40a is connected to the milk bowl assembly 10a and extends into the milk storage space 13a. A negative pressure chamber is formed within the diaphragm support 40a, which houses the diaphragm 60a. See the following description for details.

[0203] In the embodiment of the present application, the above-mentioned method can reduce the thickness space occupied by the main unit 20a, the milk bowl assembly 10a, and the breast shield 30a as a whole, and the diaphragm bracket 40a is connected to the milk bowl assembly 10a and extends to the milk storage space 13a inside the milk bowl assembly 10a. The diaphragm bracket 40a does not occupy additional thickness space, further reducing the overall volume of the breast pump and making it convenient to carry.

[0204] In this embodiment, the breast pump may further include a milk suction duct 50a connected to the milk bowl assembly 10a and extending into the milk storage space 13a. The milk suction duct 50a is connected to the internal space of the breast shield 30a. The length of the milk suction duct 50a extending into the milk storage space 13a is less than the length of the diaphragm support 40a.

[0205] In this embodiment, the suction duct 50a is connected to the bowl assembly 10a and extends into the milk storage space 13a, communicating with the interior of the breast shield 30a. The suction duct 50a serves as a channel for milk to flow from the breast shield 30a to the milk storage space 13a. It ensures that milk flows smoothly and efficiently from the breast into the milk storage space 13a of the bowl assembly 10a under negative pressure, preventing milk leakage or blockage during the transfer process. The suction duct 50a communicates with the interior of the breast shield 30a. The negative pressure generated during milk extraction directly acts on the interior of the breast shield 30a, encouraging milk to flow through the suction duct 50a into the milk storage space 13a. This design ensures a consistent and stable milk extraction process. The length of the suction duct 50a extending into the milk storage space 13a is shorter than the length of the diaphragm support 40a. This design contributes to a more compact overall structure, reducing space usage and improving portability. The shorter milk extraction duct 50a can reduce the possibility of milk residue in the duct, facilitate cleaning, and reduce the risk of bacterial growth.

[0206] Optionally, a milk outlet 51a is provided at one end of the milk duct 50a away from the breast shield 30a. The milk outlet 51a is used to circulate milk in the milk duct 50a into the milk storage space 13a. Positioning the milk outlet 51a at the end of the milk duct 50a facilitates cleaning of the milk outlet 51a. The location of the milk outlet 51a is more prominent, making it easier for the user to observe the milk flow and providing effective feedback on the milk flow status.

[0207] In one embodiment, the combined length of the milk duct 50a and the milk outlet 51a is less than or equal to the length of the diaphragm support 40a. By ensuring that the combined length of the milk duct 50a and the milk outlet 51a does not exceed the length of the diaphragm support 40a, the overall structure of the breast pump can be kept compact. This can reduce the size of a portable breast pump, making it easier to carry and use.

[0208] In one embodiment, the milk bowl assembly 10a includes a bowl body 11a and a cover plate 12a. The bowl body 11a and the cover plate 12a enclose a milk storage space 13a. The milk suction duct 50a and the diaphragm support 40a are both connected to the cover plate 12a. The bowl body 11a can be configured to be at least partially transparent, so that the user can observe the milk in the milk suction duct 50a or the milk outflow from the milk outlet 51a through the bowl body 11a, or to facilitate the user's nipple alignment when wearing the breast pump. In some embodiments, a sealing ring can be provided between the bowl body 11a and the cover plate 12a to ensure the sealing between the bowl body 11a and the cover plate 12a, thereby preventing milk from overflowing from the milk outlet space 13a.

[0209] In one embodiment, the milk suction duct 50a and the diaphragm support 40a are connected to the cover plate 12a as a whole. In some embodiments, the milk suction duct 50a can also be configured to be detachably connected to the cover plate 12a. Similarly, the milk suction duct 50a can also be configured to be detachably connected to the cover plate 12a.

[0210] In one embodiment, the milk suction duct 50a and the diaphragm support 40a are arranged side by side. By arranging the milk suction duct 50a and the diaphragm support 40a side by side, the thickness space occupied by the two can be further reduced, and the two share the thickness space, thereby making the breast pump lighter and thinner.

[0211] In one embodiment, the milk duct 50a is located above the diaphragm support 40a. This placement of the milk duct 50a above the diaphragm support 40a facilitates observation of the milk duct 50a without obstruction by the diaphragm support 40a. The milk duct 50a is at least partially made of a light-transmissive material, making it easier to observe the milk duct 50a, such as milk flow and whether the nipple channel is aligned when worn by the user.

[0212] In one embodiment, the breast pump further includes a diaphragm 60a, which is positioned within the diaphragm support 40a. The diaphragm 60a divides the interior space of the diaphragm support 40 into a first subspace and a second subspace. The first subspace communicates with the negative pressure port of the main unit 20a, while the second subspace communicates with the interior space of the milk duct 50a. Driven by negative pressure from the main unit 20a, the diaphragm 60a deforms within the interior space of the diaphragm support 40a to transmit negative pressure to the milk duct 50a, thereby generating the negative pressure required for milk extraction. The diaphragm 60a is made of a flexible material and primarily serves to prevent negative pressure from causing milk to flow back into the main unit 20a, potentially damaging the main unit 20a.

[0213] In one embodiment, the breast pump further includes a one-way valve 70a, which is disposed at the milk outlet 51a. The one-way valve 70a is configured to ensure that milk in the milk suction duct 50a flows in one direction to the milk storage space 13a. For example, the one-way valve may be a disc-type one-way valve, or in other embodiments, a duckbill valve may be employed. For example, when negative pressure is applied to the milk suction duct 50a, the one-way valve 70a is pressed against the milk outlet 51a by suction, preventing milk in the milk storage space 13a from flowing back. When the suction ceases, the milk, under the action of gravity, pushes the one-way valve 70a open and flows into the milk storage space 13a.

[0214] The present embodiment of the present invention provides a breast pump comprising: a main unit for providing negative pressure for milk extraction; a milk bowl assembly for containing milk, the milk bowl assembly being disposed on a first side of the main unit; and a breast shield having a narrow end and a wide end, the inner diameter of the breast shield gradually increasing from the narrow end to the wide end, the wide end of the breast shield being disposed on a second side of the main unit, away from the first side, the breast shield being connected to the main unit. By disposing the breast shield and the milk bowl assembly on opposite sides of the main unit and disposing the breast shield connected to the main unit, the overall size of the breast pump can be reduced, and the connection between the breast pump and the main unit can also be designed to be more stable and reliable.

[0215] Referring to Figures 14, 15, 17 and 18, Figure 14 is a schematic structural diagram of a breast pump according to an embodiment of the present application; Figure 15 is a schematic disassembled structural diagram of a breast pump according to an embodiment of the present application; Figure 17 is a schematic cross-sectional structural diagram of a breast pump according to an embodiment of the present application with the main unit and breast shield removed; Figure 18 is a schematic structural diagram of a cover plate, a milk suction duct and a diaphragm bracket according to an embodiment of the present application.

[0216] In this embodiment, the breast pump may include: a milk bowl assembly 10b, a main unit 20b, a breast shield 30b, a diaphragm support 40b and a milk suction duct 50b.

[0217] The breast shield 30b has a wide end and a narrow end, with the inner diameter of the breast shield 30b gradually increasing from the narrow end to the wide end. A milk storage space 13b is formed within the bowl assembly 10b. A milk duct 50b is connected to the bowl assembly 10b and extends into the milk storage space 13b. The milk duct 50b communicates with the breast shield 30b, and the milk storage space 13b is used to receive milk flowing out of the milk duct 50b. The main unit 20b is used to provide negative pressure in the milk duct 50b for milk extraction. When the milk storage space 13b is empty, the center of gravity of the breast pump is within the milk duct 50b or the narrow end of the breast shield 30b.

[0218] The breast shield 30b includes a flange and a duct at its narrow end. The breast pump's center of gravity is located within the narrow end, meaning it is located within the duct at the narrow end. The narrow end and the suction duct 50b form a nipple passageway connected within the narrow end and the suction duct 50b. This nipple passageway is used to receive the user's nipple and extract milk during breast pumping. This placement of the center of gravity within the suction duct 50b or the narrow end of the breast shield 30b can be achieved by adjusting the spatial layout of the various components of the main unit 20b, as described below.

[0219] In this way, the center of gravity of the breast pump is arranged in the narrow end of the milk suction duct 50b or the breast shield 30b, close to the center of the nipple, so that the breast pump is more stable and comfortable when worn on the human body, and the suction force is more uniform.

[0220] In one embodiment, a through hole 221b is defined on the main unit 20b, and the breast shield 30b is passed through the through hole 221b. The main unit 20b is located between the wide end of the breast shield 30b and the milk bowl assembly 10b.

[0221] 16, which is a schematic diagram of the internal structure of the main unit of a breast pump according to an embodiment of the present invention after removing the outer shell. Optionally, a through hole 221b is formed on the main unit 20, and the center of gravity of the main unit 20b is located in the through hole 221b.

[0222] As shown in Figure 16, in one embodiment, the main unit 20b includes a shell and a negative pressure pump 201b, a solenoid valve 202b, a first battery 203b and a second battery 204b arranged in the shell, the negative pressure pump 201b and the solenoid valve 202b are both located below the through hole 221b, and the first battery 203b and the second battery 204b are respectively located on the left and right sides of the through hole 221b.

[0223] In some embodiments, the spatial layout within the main unit 20b is not limited to this, as long as the center of gravity is located within the milk duct 50b or the narrow end of the breast shield 30b. For example, the negative pressure pump and the solenoid valve are respectively located below the left and right sides of the through hole 221b, and the first and second batteries are respectively located above the left and right sides of the through hole 221b. For another example, the negative pressure pump and the solenoid valve are respectively located above the left and right sides of the through hole 221b, and the first and second batteries are respectively located below the left and right sides of the through hole 221b. This embodiment of the present application is not limited to this.

[0224] In one embodiment, the host 20b further includes a circuit board 205b located in the housing, and the circuit board 205b is located above the through hole 221b.

[0225] Referring to Figure 19 , which is a schematic diagram of the disassembled structure of the main unit and milk bowl assembly according to an embodiment of the present application, in one embodiment, the main unit 20b includes a transverse portion 21b and a longitudinal portion 22b bent and connected to the transverse portion 21b. A through hole 221b is provided in the longitudinal portion 22b. The longitudinal portion 22b is located between the wide end of the breast shield 30b and the milk bowl assembly 10b. The first side surface 81b of the milk bowl assembly 10b contacts the longitudinal portion 22b of the main unit 20b, and the second side surface 82b of the milk bowl assembly 10b contacts the transverse portion 21b of the main unit 20b. The first side surface 81b and the second side surface 82b are adjacent sides of the milk bowl assembly 10b. The negative pressure pump 201b and the solenoid valve 202b are disposed within the transverse portion 21b. By configuring the main unit 20b to be L-shaped, including a transverse portion 21b and a longitudinal portion 22b, a larger space can be provided inside the transverse portion 21b. For example, larger components such as the negative pressure pump 201b and the solenoid valve 202b can be arranged inside the transverse portion 21b. This facilitates the layout of the various components inside the main unit 20b and facilitates the placement of the center of gravity inside the milk duct 50b or the narrow end of the breast shield 30b.

[0226] In one embodiment, the negative pressure pump 201b is a piezoelectric pump. Specifically, the piezoelectric pump can be a piezoelectric ceramic pump, although piezoelectric pumps made of other media can also be used, and this embodiment of the application is not limited thereto. The piezoelectric pump is generally flat, and the height of the piezoelectric pump can be less than half of its width.

[0227] In one embodiment, the milk bowl assembly 10b includes a bowl body 11b and a cover plate 12b, the bowl body 11b and the cover plate 12b enclose a milk storage space 13, and the milk suction duct 50b is connected to the cover plate 12b.

[0228] In one embodiment, the milk suction duct 50b is integrally formed with the cover plate 12b.

[0229] In one embodiment, the breast pump further includes a diaphragm 60b, which is positioned within the diaphragm support 40b. The diaphragm 60b divides the interior space of the diaphragm support 40b into a first subspace and a second subspace. The first subspace communicates with the negative pressure port of the main unit 20b, while the second subspace communicates with the interior space of the milk duct 50b. Driven by the negative pressure provided by the main unit 20b, the diaphragm 60b deforms within the interior space of the diaphragm support 40b to transmit the negative pressure to the milk duct 50b, thereby generating the negative pressure required for milk extraction. The diaphragm 60b is made of a flexible material and primarily serves to prevent negative pressure from causing milk to flow back into the main unit 20b, potentially damaging the main unit 20b.

[0230] In one embodiment, the milk bowl assembly 10b includes a bowl body 11b and a cover plate 12b, and the bowl body 11b and the cover plate 12b enclose a milk storage space 13b. The diaphragm bracket 40b is connected to the milk bowl assembly 10b and extends into the milk storage space 13b. The milk suction duct 50b and the diaphragm bracket 40b are both connected to the cover plate 12b. The bowl body 11b can be configured to be at least partially transparent, so that the user can observe the milk in the milk suction duct 50b through the milk bowl 11b, or observe the milk flowing out of the milk outlet 51b, or facilitate the user to align the nipple position when wearing the breast pump. In some embodiments, a sealing ring can be provided between the bowl body 11b and the cover plate 12b to ensure the sealing of the connection between the bowl body 11b and the cover plate 12b, thereby preventing milk in the milk outlet space 13b from overflowing.

[0231] In one embodiment, the milk suction duct 50b and the diaphragm support 40b are connected to the cover plate 12b as a whole. In some embodiments, the milk suction duct 50b can also be configured to be detachably connected to the cover plate 12b. Similarly, the milk suction duct 50b can also be configured to be detachably connected to the cover plate 12b.

[0232] In one embodiment, the milk suction duct 50b and the diaphragm support 40b are arranged side by side. By arranging the milk suction duct 50b and the diaphragm support 40b side by side, the thickness space occupied by the two can be further reduced, and the two share the thickness space, thereby making the breast pump lighter and thinner.

[0233] In one embodiment, the milk duct 50b is located above the diaphragm support 40b. This placement of the milk duct 50b above the diaphragm support 40b facilitates observation of the milk duct 50b, as the milk duct 50b is not obstructed by the diaphragm support 40b. The milk duct 50b is at least partially made of a light-transmissive material, making it easier to observe the milk duct 50b, such as milk flow and whether the nipple channel is aligned when the user wears the milk duct.

[0234] In one embodiment, the breast pump further includes a one-way valve 70b disposed at the milk outlet 51b. The one-way valve 70b is configured to ensure one-way flow of milk from the milk suction duct 50b into the milk storage space 13b. For example, the one-way valve may be a disc-type one-way valve, or in other embodiments, a duckbill valve may be employed. For example, when negative pressure is applied to the milk suction duct 50b, the one-way valve 70b is drawn against the milk outlet 51b by suction, preventing milk from flowing back into the milk storage space 13b. When the suction ceases, the milk, under the action of gravity, pushes the one-way valve 70b open and flows into the milk storage space 13b.

[0235] The embodiment of the present application provides a breast pump comprising a breast shield having a wide end and a narrow end, the inner diameter of the breast shield gradually increasing from the narrow end to the wide end; a milk bowl assembly, a milk storage space formed therein; a milk duct connected to the milk bowl assembly and extending into the milk storage space, the milk duct being in communication with the breast shield, the milk storage space being used to receive milk flowing out of the milk duct; and a main unit for providing negative pressure into the milk duct for milk extraction; wherein, when the milk storage space is empty, the center of gravity of the breast pump is located within the milk duct or the narrow end of the breast shield. By means of the above method, the center of gravity of the breast pump is arranged within the milk duct or the narrow end of the breast shield, close to the center of the nipple, making the breast pump more stable and comfortable when worn on the human body, and the suction force more uniform.

[0236] As shown in Figures 20 to 24, the milk extraction assembly provided in the embodiment of the present application is applied to a breast pump and includes a fixing member, a diaphragm support 10c, and an outer milk guide member 20c. The diaphragm support 10c and the outer milk guide member 20c are both connected to the fixing member. When the breast pump is placed on the breast, the outer milk guide member 20c is located above the diaphragm support 10c. In other words, when the user wears the breast pump to express milk, the outer milk guide member 20c is located above the diaphragm support 10c. The diaphragm support 10c has a negative pressure chamber 11c, and the outer milk guide member 20c is provided with a first milk guide channel 21c, a milk flow hole 22c connecting the first milk guide channel 21c and the milk storage chamber 81c of the breast pump, and a first air guide hole 23c connecting the first milk guide channel 21c and the negative pressure chamber 11c. By arranging the outer milk-conducting member 20c above the diaphragm support 10c, the diaphragm support 10c can avoid blocking the outer milk-conducting member 20c, thereby facilitating the user to check the situation in the first milk-conducting channel 21c.

[0237] During use, negative pressure suction enters the first milk guide channel 21c through the first air guide hole 23c, and the milk is sucked out and flows into the first milk guide channel 21c, and then flows into the milk storage chamber 81c through the milk flow hole 22c for temporary storage.

[0238] Please refer to Figures 21 and 22. The milk suction assembly also includes an inner milk guide member 30c, at least part of which extends into the first milk guide channel 21c. The inner milk guide member 30c is provided with a second milk guide channel 311c and a second air guide hole 33c connected to the second milk guide channel 311c, and the second milk guide channel 311c is connected to the first milk guide channel 21c; wherein, the inner milk guide member 30c and the inner side wall of the outer milk guide member 20c are combined to form an air guide channel 40c, the first air guide hole 23c and the second air guide hole 33c are both connected to the air guide channel 40c, and the second air guide hole 33c is located above the central axis 111c of the second milk guide channel 311c when the breast pump is placed on the breast. By extending at least a portion of the inner milk guide member 30c into the first milk guide channel 21c, the inner milk guide member 30c is located above the diaphragm support 10c, that is, the second milk guide channel 311c is located above the diaphragm support 10, thereby preventing the diaphragm support 10c from blocking the inner milk guide member 30c, thereby making it easier for the user to view the situation in the second milk guide channel 311c. When the breast pump is placed on the breast, the second air guide hole 33c is located above the first air guide hole 23c, that is, when the user wears the breast pump to express milk, the second air guide hole 33c is located above the first air guide hole 23c. Optionally, the first air guide hole 23c is located below the central axis 111c of the second milk guide channel 311c. Among them, the extension direction of the central axis 111c is the same as the extension direction of the second milk guide channel 311c. When the breast pump is placed on the breast, the extension direction of the second milk guide channel 311c is horizontal or substantially horizontal, and the central axis 111c is also horizontal or substantially horizontal.

[0239] During use, the nipple is aligned with or extended into the second milk guide channel 311c, and negative pressure suction enters the air guide channel 40c through the first air guide hole 23c, and then enters the second milk guide channel 311c through the second air guide hole 33c. After the milk is sucked out, it flows into the second milk guide channel 311c, then flows into the first milk guide channel 21c and flows into the milk storage chamber 81c through the milk flow hole 22c for temporary storage.

[0240] By adopting the above technical solution, by forming an air channel 40c and arranging the first air hole 23c and the second air hole 33c to communicate with the air channel 40c, the negative pressure chamber 11c is connected to the second milk guide channel 311c, and a negative pressure is generated in the second milk guide channel 311c, thereby achieving milk extraction. By arranging the second air hole 33c above the central axis 111c of the second milk guide channel 311c, the milk in the second milk guide channel 311c is not easily flowed through the second air hole 33c into the air channel 40c and the negative pressure chamber 11c, thereby preventing contamination of the negative pressure chamber 11c and a decrease in the suction performance of the breast pump. Therefore, the milk extraction assembly provided in this embodiment can prevent milk from flowing from the milk guide channels (the first milk guide channel 21c and / or the second milk guide channel 311c) into the negative pressure chamber 11c, thereby preventing contamination of the negative pressure chamber 11c and a decrease in the suction performance of the breast pump.

[0241] In one embodiment, when the breast pump is placed on the breast, the angle between the line connecting the second air hole 33c and the central axis 111c of the second milk conduction channel 311c and the horizontal plane is 80° to 100°. Optionally, the angle between the line connecting the second air hole 33c and the central axis 111c of the second milk conduction channel 311 and the horizontal plane is 90°. That is, the second air hole 33c is located at the top of the second milk conduction channel 311c, which is more effective in preventing milk from flowing into the air conduction channel 40c through the second air hole 33c.

[0242] As an embodiment, the outer milk guide piece 20c and the diaphragm support 10c are arranged side by side and share a common wall, that is, the outer milk guide piece 20c and the diaphragm support 10c have a common side wall, one side of the side wall faces the first milk guide channel 21c, and the other side faces the negative pressure chamber 11c, wherein the first air guide hole 23c is formed on the side wall.

[0243] In one embodiment, the outer milk guide member 20c is generally cylindrical with an opening at one end. Its cavity forms a first milk guide channel 21c. A milk flow hole 22c is defined in the bottom wall, and a first air guide hole 23c is defined in the side wall. When the breast pump is placed on the breast, the outer milk guide member 20c is positioned substantially horizontally, with its opening facing the breast. The inner milk guide member 30c is generally tubular in structure, with its cavity forming a second milk guide channel 311c. When the inner milk guide member 30c extends into the outer milk guide member 20c, the second milk guide channel 311c communicates with the first milk guide channel 21c through the opening at one end.

[0244] Referring to Figures 22, 25, and 26, the inner milk guide member 30c includes a milk guide body 31c and a soft rubber ring 32c. The milk guide body 31c extends into the first milk guide channel 21c and is provided with a second milk guide channel 311c and a first through-hole 312c communicating with the second milk guide channel 311c. The soft rubber ring 32c is sleeved around the outer periphery of the milk guide body 31c and positioned between the milk guide body 31c and the outer milk guide member 20c. The soft rubber ring 32c is provided with a first annular groove 321c and a second through-hole 322c communicating with the first annular groove 321c. The outer milk guide member 20c seals the first annular groove 321c to form an air guide channel 40c. The first through-hole 312c and the second through-hole 322c correspond to form a second air guide hole 33c. The milk guide body 31c is generally tubular in structure. The soft rubber ring 32c is sleeved on the outer periphery of the milk guide body 31c and is sandwiched between the milk guide body 31c and the outer milk guide piece 20c. The air guide channel 40c formed by the enclosed ring has good sealing performance to ensure that the air guide channel 40c will not leak.

[0245] Referring to Figures 25 and 26 , the outer wall of the milk guide body 31c is provided with a second annular groove 313c, into which the soft rubber ring 32c is embedded. This arrangement enhances the secure connection between the soft rubber ring 32c and the milk guide body 31c, and prevents the soft rubber ring 32c from entirely protruding from the milk guide body 31c. This reduces the gap between the milk guide body 31c and the outer milk guide member 20c, thereby enhancing the secure assembly of the milk guide body 31c and the outer milk guide member 20c.

[0246] As one embodiment, the second annular groove 313c is formed at the end of the milk guide body 31c that extends into the first milk guide channel 21c, that is, the second annular groove 313c is formed at the end of the milk guide body 31c near the milk flow hole 22c. This allows the air guide channel 40c to be formed at the end of the milk guide body 31c near the milk flow hole 22c. The air guide channel 40c is closer to the milk flow hole 22c, which facilitates the flow of milk to the milk flow hole 22c. In addition, this arrangement allows for faster assembly of the soft rubber ring 32c compared to placing the second annular groove 313c in the middle of the milk guide body 31c.

[0247] In one embodiment, the inner milk guide 30c is detachably connected to the outer milk guide 20c. Thus, when using the breast pump, the inner milk guide 30c is assembled inside the outer milk guide 20c to prevent milk from flowing into the negative pressure chamber 11c. When milking is complete and the breast pump is not in use, the inner milk guide 30c can be removed from the outer milk guide 20c, facilitating cleaning of the inner and outer milk guides 30c and 20c. Of course, in other embodiments, the inner milk guide 30c and outer milk guide 20c may also be fixedly connected.

[0248] 22 , the milking assembly further includes an elastic diaphragm 50c, which is circumferentially connected to the diaphragm support 10c and extends into the negative pressure chamber 11c. In specific applications, the elastic diaphragm 50c can deform to cause pressure changes in the second milk-conducting channel 311c, thereby promoting lactation.

[0249] Referring to Figures 24 and 25 , the milk pump assembly further includes a negative pressure chamber cover 60c, which covers and seals the opening of negative pressure chamber 11c. In practice, negative pressure chamber cover 60c defines a negative pressure hole 61c to connect negative pressure chamber 11c to the pump body of the breast pump.

[0250] As an embodiment, the negative pressure chamber cover 60c is connected to the milk guide body 31c and is integrally formed with the milk guide body 31c. This arrangement reduces the number of parts, prevents the loss of parts, and improves the assembly efficiency of the breast pump.

[0251] 25 , the milk pump assembly further comprises a handle 70c, which is connected to the inner milk guide 30c. The handle 70c is provided to provide a fulcrum for the user, making it easier for the user to remove and install the inner milk guide.

[0252] In one embodiment, the handle 70c is connected to the milk guide body 31c and is integrally formed with the milk guide body 31c. This arrangement, on the one hand, reduces the number of parts, prevents the loss of parts, and improves the assembly efficiency of the breast pump; on the other hand, it reduces the number of processing steps and speeds up the processing efficiency.

[0253] Referring to Figures 21 and 22 , the milk pump assembly further includes a container body 80c, a sealing cover 90c, a main unit housing 100c, and a breast shield 110c. The sealing cover 90c covers and seals the container body 80c, and together with the container body 80c, forms a milk storage chamber 81c. The main unit housing 100c is disposed between the sealing cover 90c and the breast shield 110c, and the breast shield 110c is configured to be placed on a breast. The fixing member is the sealing cover 90c, the main unit housing 100c, or the breast shield 110c, and the outer milk guide 20c and the diaphragm support 10c both extend from the fixing member toward the milk storage chamber 81c. In this embodiment, the fixing member is the sealing cover 90c, and the outer milk guide 20c and the diaphragm support 10c are both connected to the side of the sealing cover 90c facing the milk storage chamber 81c and extend toward the milk storage chamber 81c.

[0254] Furthermore, the present invention also provides a breast pump including the above-mentioned milk suction assembly. By adopting the above-mentioned milk suction assembly, milk can be prevented from entering the negative pressure chamber 11c and contaminating the negative pressure chamber 11c, or even affecting the suction performance of the breast pump, thereby greatly improving the quality of the breast pump.

[0255] As an embodiment, the breast pump further includes a pump body and a solenoid valve, both of which are disposed within the main housing 100c. When the pump body is operating, the solenoid valve is inoperative, allowing the pump body to draw air away and generate negative pressure. When the solenoid valve is inoperative, the pump body is inoperative, the solenoid valve opens, and air is allowed to flow into the negative pressure chamber 11.

[0256] As shown in Figures 27 to 29, the milk suction assembly provided in the embodiment of the present application is applied to a breast pump 100d, including a milk storage container 10d, a milk guide 20d and a sealing member 30d; the milk storage container 10d includes a container body 11d and a container cover 12d, and the container cover 12d and the container body 11d enclose a milk storage chamber 13d; the milk guide 20d is connected to the side of the container cover 12d facing the milk storage chamber 13d or is connected to a fixing member of the breast pump 100d and passes through the container cover 12d to extend into the milk storage chamber 13d, and the milk guide 20d has a milk guide channel 21d; wherein, the container cover 12d is provided with a milk pouring port 121d connected to the milk storage chamber 13d, and the sealing member 30d is used to seal the milk pouring port 121d.

[0257] When the breast pump 100d is used to express milk, the milk is sucked into the milk guide channel 21d and then flows into the milk storage chamber 13d for temporary storage. After the breast pump 100d has finished sucking the milk from one or both breasts, the milk in the milk storage chamber 13d is poured out through the milk pouring port 121d.

[0258] By adopting the above technical solution, a milk guide piece 20d is provided, and the milk guide piece 20d is provided with a milk guide channel 21d, so that milk can be guided; by connecting the milk guide piece 20d to the side of the container cover 12d facing the milk storage chamber 13d or connecting to the fixing piece of the breast pump 100d and extending through the container cover 12d into the milk storage chamber 13d, it is achieved that when the breast pump 100d is used to suck milk, the container cover 12d faces the side of the breast, and the sucked milk can flow into the milk storage chamber 13d through the milk guide channel 21d, so that the user can observe the flow of milk in the milk guide channel 21d through the container body 11d and the milk guide piece 20d during the milk sucking process; by providing a milk pouring port 121d and a sealing member 30d, the milk temporarily stored in the milk storage chamber 13d can be poured out through the milk pouring port 121d, and the milk can be poured out through the sealing member 30d. 30d seals the milk pouring port 121d. When milk needs to be poured out from the milk storage chamber 13d, the seal 30d is removed to pour out the milk. When the breast pump 100d is sucking milk, the seal 30d is sealed on the milk pouring port 121d to prevent milk from flowing out of the milk pouring port 121d. By arranging the milk pouring port 121d on the container cover 12d, since the container cover 12d is arranged toward the breast when the breast pump 100d is sucking milk, it is not on the path for the user to view the milk guide channel 21d, so the milk pouring port 121d is not located on the path for the user to view the milk guide channel 21d. Therefore, the seal 30d sealing the milk pouring port 121d will not block the user's line of sight, and the user can quickly and effectively obtain problems existing in the use of the breast pump 100d according to the flow of milk.

[0259] Therefore, the milk suction assembly provided in this embodiment, by setting the milk pouring port 121d on the container cover 12d, prevents the seal 30d from blocking the user's view of the milk guide channel 21d. The user can quickly and effectively obtain problems that exist during the use of the breast pump 100d, thereby improving the user's usage experience.

[0260] As an embodiment, when the breast pump 100d is placed on the breast, the milk pouring port 121d is located above the milk guide 20d. When milk flows from the milk guide channel 21d to the milk storage chamber 13d, due to the effect of gravity, it flows to the bottom of the milk guide channel 21d. When the milk pouring port 121d is set below the milk guide 20d (i.e., below the milk guide channel 21d), the milk will quickly rise to the water level where the milk pouring port 121d is located. If the sealing member 30d is not sealed tightly, milk will easily leak from the milk pouring port 121d, which not only affects the user experience but also wastes milk. This embodiment can effectively avoid the above situation by setting the milk pouring port 121d above the milk guide 20d.

[0261] Referring to Figures 29 to 31 , the container cover 12d includes a first plate 122d and a second plate 123d. The second plate 123d extends from the first plate 122d toward the milk storage chamber 13d, and forms an angle with the first plate 122d that is greater than 90° and less than 180°. The milk guide 20d is connected to the first plate 122d, and the milk pouring port 121d is located in the second plate 123d. When the breast pump 100d is placed on the breast, the second plate 123d is located above the first plate 122d. With this arrangement, when the breast pump 100d is placed on the breast, the milk pouring port 121d is located above the milk guide channel 21d, and the milk pouring port 121d is arranged to be tilted upward, which can effectively prevent milk leakage when the seal 30d is not sealed tightly. In addition, this arrangement can make the milk more concentratedly accommodated below the milk pouring port 121d, and make it easier for the milk to be poured out through the milk pouring port 121d.

[0262] In one embodiment, one end of the seal 30d removably seals the milk pouring port 121d, and the other end is connected to the container cover 12d. Specifically, the other end of the seal 30d is connected to the side of the container cover 12d away from the milk storage chamber 13d. This configuration allows the user to seal the milk pouring port 121d or open the milk pouring port 121d according to actual circumstances. In addition, when the seal 30d is removed and the milk pouring port 121d is opened, the other end of the seal 30d is connected to the container cover 12d, preventing the seal 30d from being lost. Of course, in other embodiments, the seal 30d removably seals the milk pouring port 121d, and when the seal 30d is removed from the milk pouring port 121d, the seal 30d can also be separated from the container cover 12d.

[0263] In one embodiment, the seal 30d is integrally injection-molded with the container cover 12d. This not only prevents loss of the seal 30d but also improves the production efficiency of the milking assembly. Specifically, the seal 30d is made of a soft rubber material, while the container cover 12d is made of a hard rubber material. The seal 30d and container cover 12d are integrally injection-molded using a soft-hard rubber process. It is understood that in other embodiments, the seal 30d and container cover 12d can be manufactured separately and then assembled.

[0264] Referring to Figures 28 and 29 , the milk storage container 10d also includes a sealing ring 14d, which is positioned between the container body 11d and the container cover 12d. The provision of the sealing ring 14d enhances the sealing of the milk storage chamber 13d, preventing milk from leaking between the container body 11d and the container cover 12d. Preferably, the sealing ring 14d and the container cover 12d are integrally injection-molded. This reduces the number of parts and the risk of component loss while also facilitating efficient production and assembly of the milk pump assembly.

[0265] 29 to 31 , a milk outlet 22d is provided at one end of the milk guide member 20d facing the milk storage chamber 13d. The milk outlet 22d is used to connect the milk guide channel 21d and the milk storage chamber 13d. This facilitates the user to check the flow of milk in the entire milk guide channel 21d.

[0266] In one embodiment, when the breast pump 100d is placed on the breast, at least the upper half of the container body 11d and at least the upper half of the milk guide 20d are both made of an optically transparent material. This allows the user to view the interior of the milk guide 21d while the breast pump 100d is expressing milk. Preferably, both the container body 11d and the milk guide 20d are made of a transparent material.

[0267] Referring to Figures 28, 29, and 31, the milk extraction assembly further includes a diaphragm support 40d. The diaphragm support 40d is connected to the side of the container cover 12d facing the milk storage chamber 13d, or to a fixing member of the breast pump 100d, and extends through the container cover 12d into the milk storage chamber 13d. When the breast pump 100d is placed on the breast, the diaphragm support 40d is positioned below the milk guide 20d. This arrangement effectively prevents the diaphragm support 40d from obstructing the user's view of the milk guide channel 21d. The diaphragm support 40d defines a negative pressure chamber connected to the milk guide channel 21d. When the pump body of the breast pump 100d generates negative pressure in the negative pressure chamber, the negative pressure is transferred to the milk guide channel 21d to extract milk.

[0268] As an embodiment, the diaphragm support 40d and the milk guide 20d are arranged side by side. In this way, the space in the milk storage container 10d is effectively utilized, so that the milk storage chamber 13d has as much space as possible to carry milk.

[0269] Referring to Figures 27 and 28 , the breast pump assembly further includes a main unit housing 50d and a breast shield 60d. The main unit housing 50d is positioned between the container cover 12d and the breast shield 60d, and the breast shield 60d is positioned to fit over the breast. When the milk guide 20d and the diaphragm support 40d are connected to a fixture of the breast pump 100d, the fixture can be either the main unit housing 50d or the breast shield 60d. This means that the milk guide 20d and the diaphragm support 40d can be connected to either the main unit housing 50d or the breast shield 60d.

[0270] Furthermore, referring to Figures 27 to 29 , an embodiment of the present application further provides a breast pump 100d including the aforementioned milk extraction assembly. By employing the aforementioned milk extraction assembly, when using the breast pump 100d to extract milk, the seal 30d does not obstruct the user's view of the milk guide channel 21d, thereby enabling the user to quickly and effectively identify any problems encountered during use of the breast pump 100d.

[0271] As an embodiment, breast pump 100d further includes a pump body and a solenoid valve, both of which are disposed within main body housing 50d. When the pump body is operating, the solenoid valve is inoperative, allowing the pump body to draw air away and generate negative pressure. When the solenoid valve is inoperative, the pump body is inoperative, the solenoid valve opens, and air is allowed to flow into the negative pressure chamber.

[0272] The breast pump assembly and breast pump 100d provided in this embodiment differ from those in the above-mentioned embodiments in that the sealing member 30d is disposed in a different manner. Specifically, in one embodiment, the sealing member 30d is integrally injection-molded with the container cover 12d; whereas in this embodiment, the sealing member 30d, the sealing ring 14d, and the container cover 12d are integrally injection-molded.

[0273] In this embodiment, one end of the seal 30d detachably seals the milk pouring port 121d, while the other end extends through the container cover 12d and connects to the sealing ring 14d. The seal 30d, sealing ring 14d, and container cover 12d are integrally injection-molded. This arrangement reduces the number of parts and the likelihood of component loss while also improving the production and assembly efficiency of the milking assembly.

[0274] As shown in Figures 32 to 34, a diaphragm assembly 100e provided in one embodiment of the present application is applied to a breast pump, and includes an elastic diaphragm 10e, a diaphragm cover 20e and a connector 30e; the elastic diaphragm 10e has a cavity 11e and an opening 12e connected to the cavity 11e; the diaphragm cover 20e is detachably covered on the opening 12e and is penetrated by a first through hole 21e; ​​one end of the connector 30e is fixedly connected to the elastic diaphragm 10e, and the other end is fixedly connected to the diaphragm cover 20e.

[0275] The above technical solution provides a diaphragm cover 20e that is detachably mounted on the opening 12e, allowing the diaphragm cover 20e to both cover the opening 12e to seal the cavity 11e and be removed from the opening 12e of the elastic diaphragm 10e for easy cleaning. Furthermore, a connector 30e is provided, one end of which is fixedly connected to the elastic diaphragm 10e and the other end of which is fixedly connected to the diaphragm cover 20e. When the diaphragm cover 20e is removed from the opening 12e of the elastic diaphragm 10e, it remains connected to the elastic diaphragm 10e via the connector 30e. Therefore, the diaphragm cover 20e and the elastic diaphragm 10e do not separate into two independent components, thus preventing the diaphragm cover 20e (which is relatively small in size) from being lost and reducing the number of independent parts of the breast pump. Therefore, the diaphragm assembly 100e provided in this embodiment reduces the number of parts, speeds up assembly and disassembly, and reduces the chance of part loss.

[0276] As an embodiment, the connecting member 30e is configured to enable the diaphragm cover 20e to be flipped and covered on the opening 12e. It is understood that in other embodiments, the diaphragm cover 20e is also configured to be translationally movably covered on the opening 12e.

[0277] Referring to Figures 34 to 36 , the connector 30e includes a connecting portion 31e, an embedding portion 32e, and a bendable portion 33e. The bendable portion 33e is connected between the connecting portion 31e and the embedding portion 32e and is bendable. The connecting portion 31e is fixedly connected to the elastic diaphragm 10e. A mounting groove 22e is defined on the side of the diaphragm cover 20e facing away from the cavity 11e, and the embedding portion 32e is embedded in the mounting groove 22e. This connector 30e has a simple structure, and the embedding portion 32e is embedded in the mounting groove 22e. This not only improves the secure connection between the connector 30e and the diaphragm cover 20e, but also reduces the thickness of the diaphragm assembly 100e by protruding relative to the embedding portion 32e, facilitating assembly of the diaphragm assembly 100e with other components of the breast pump.

[0278] Referring to Figures 35 and 36 , a first through-hole 21e is formed in the bottom wall of the mounting groove 22e, and a second through-hole 34e is provided in the embedded portion 32e. The first through-hole 21e and the second through-hole 34e form a corresponding negative pressure hole, which is used to connect the cavity 11e with the suction pump of the breast pump. In this embodiment, the mounting groove 22 is relatively large, occupying almost the entire area of ​​the side of the diaphragm cover 20e away from the cavity 11e. Of course, in specific applications, as an alternative embodiment, the first through-hole 21e can also be formed in the diaphragm cover 20e outside the area where the mounting groove 22e is located. In this technical solution, the first through-hole 21e forms the negative pressure hole, while the mounting groove 22e can be smaller, for example, occupying one-third or one-quarter of the area on the side of the diaphragm cover 20e away from the cavity 11e.

[0279] In one embodiment, the connector 30e and the elastic diaphragm 10e are both made of a soft rubber material, while the diaphragm cover 20e is made of a hard rubber material. The diaphragm cover 20e, the connector 30e, and the elastic diaphragm 10e are integrally formed. This arrangement greatly improves the processing efficiency of the diaphragm assembly 100e. It is understood that in other embodiments, the diaphragm cover 20e and the connector 30e may be integrally formed, or the elastic diaphragm 10e and the connector 30e may be integrally formed, or the diaphragm cover 20e, the connector 30e, and the elastic diaphragm 10e may be manufactured separately and then assembled.

[0280] Referring to Figures 33, 34, and 39, the elastic diaphragm 10e includes a bottom wall 13e, two long side walls 14e, and two short side walls 15e. The two short side walls 15e are spaced apart and opposite each other and connected between the two long side walls 14e. The bottom wall 13e, the two long side walls 14e, and the two short side walls 15e together form a cavity 11e. The ends of the two long side walls 14e and the two short side walls 15e, which are away from the bottom wall 13e, together form an opening 12e. The bottom wall 13e and the opening 12e are disposed opposite each other. With this arrangement, the elastic diaphragm 10e has a rectangular or substantially rectangular shape. In a specific application, the elastic diaphragm 10e is placed within the negative pressure chamber 2031e of a breast pump. The negative pressure chamber 2031e is rectangular or substantially rectangular and is disposed horizontally on the breast pump. This reduces the height of the breast pump while ensuring the size of the negative pressure chamber 2031e.

[0281] As an embodiment, the connecting member 30e is fixedly connected to one end of one of the short side walls 15e near the opening 12e. Of course, in other embodiments, the connecting member 30e can also be fixedly connected to one end of one of the long side walls 14e near the opening 12e, or to the end of the connection between the adjacent short side walls 15e and the long side wall 14e near the opening 12e.

[0282] Referring to Figures 33, 34, and 39, the diaphragm assembly 100e further includes a lug 40e connected to the end of the other short sidewall 15e near the opening 12e. Specifically, the lug 40e is disposed opposite the connector 30e. The lug 40e provides a fulcrum when the elastic diaphragm 10e needs to be removed from the negative pressure chamber 2031e, facilitating removal of the elastic diaphragm 10e. Of course, in other embodiments, the lug 40e may also be connected to the end of one of the long sidewalls 14e near the opening 12e, or to the end of the junction of the adjacent short sidewall 15e and long sidewall 14e near the opening 12e.

[0283] Referring to Figures 34 and 39 , one of the long side walls 14e is provided with an escape groove 16e, which is used to clear the milk guide channel 2041e of the breast pump. Accordingly, the negative pressure chamber 2031e is provided with an escape space for clearing the milk guide channel 2041e. The milk guide channel 2041e and the negative pressure chamber 2031e are arranged side by side in the vertical direction. The provision of the escape groove 16e to clear the milk guide channel 2041e minimizes the height occupied by the milk guide channel 2041e and the negative pressure chamber 2031e, thereby reducing the height of the breast pump.

[0284] As an embodiment, the outer contour of the diaphragm cover 20e matches the shape of the opening 12e, that is, the diaphragm cover 20e is rectangular, and an avoidance recess 23e corresponding to the avoidance groove 16e is provided on one long side, and the avoidance recess 23e is used to avoid the milk guide channel 2041e.

[0285] Referring to Figures 33 and 37 , the diaphragm cover 20e includes a cover body 24e and a stopper protrusion 25e. The stopper protrusion 25e is connected to one side of the cover body 24e. The cover body 24e covers the opening 12e. The stopper protrusion 25e extends into the cavity 11e and abuts against the elastic diaphragm 10e to limit the position of the cover body 24e. A connector 30e is fixedly connected to the side of the cover body 24e facing away from the stopper protrusion 25e. This improves the secure fit of the cover body 24e over the opening 12e and prevents movement of the cover body 24e. Furthermore, by fixing the connector 30e to the side of the cover body 24e facing away from the stopper protrusion 25e, interference with the stopper protrusion 25e extending into the cavity 11e is prevented.

[0286] As an embodiment, the limiting protrusion 25e is annular. In this way, the limiting protrusion 25e abuts against the elastic diaphragm 10e along the circumferential direction, thereby effectively limiting the cover 24e. It is understood that in other embodiments, the limiting protrusion 25e can also include multiple protrusions arranged in an annular pattern.

[0287] Furthermore, the present invention also provides a breast pump including the diaphragm assembly 100e. By adopting the diaphragm assembly 100e, the number of parts is reduced, thereby speeding up assembly and disassembly and reducing the chance of part loss.

[0288] Referring to Figures 34, 38, and 39, the breast pump further includes a milking assembly 200e, a main unit 300e, and a breast shield 400e. The milking assembly 200e is provided with a negative pressure chamber 2031e and a milk guide channel 2041e communicating with the negative pressure chamber 2031e. An elastic diaphragm 10e is disposed within the negative pressure chamber 2031e, and the milk guide channel 2041e is used to guide milk. The main unit 300e is disposed between the milking assembly 200e and the breast shield 400e, which is adapted to be placed on the breast. The first through hole 21e connects the chamber 11e to the suction pump of the main unit 300e. This breast pump has a simple and compact structure and is easy and quick to assemble.

[0289] Please refer to Figures 38 and 39. The milk suction assembly 200e includes a container body 201e, a container cover 202e, a negative pressure piece 203e and a milk guide piece 204e; the container cover 202e covers and seals the container body 201e, and together with the container body 201e, forms a milk storage chamber. The main unit 300e is arranged between the container cover 202e and the breast shield 400e; the negative pressure piece 203e and the milk guide piece 204e are both connected to the side of the container cover 202e facing the milk storage chamber, the negative pressure piece 203e is provided with a negative pressure chamber 2031e, and the milk guide piece 204e is provided with a milk guide channel 2041e.

[0290] As shown in Figures 40 and 41 , a breast pump assembly according to one embodiment of the present application is used in a breast pump 100f and includes a milk storage container 10f. The milk storage container 10f includes a container body 11f and a container cover 12f. The container cover 12f and the container body 11f enclose a milk storage chamber 13f. The milk storage chamber 13f is used to temporarily store milk extracted from the breast.

[0291] Please refer to Figures 40 and 41. The milk suction assembly also includes a milk guide piece 20f and a negative pressure piece 30f. The milk guide piece 20f and the negative pressure piece 30f are both connected to the side of the container cover 12f facing the milk storage chamber 13f or are penetrated through the container cover 12f and extend into the milk storage chamber 13f; the milk guide piece 20f has a milk guide channel 21f, and the negative pressure piece 30f has a negative pressure chamber 31f connected to the milk guide channel 21f. The milk guide piece 20f or the negative pressure piece 30f is also provided with a milk flow port 40f connected to the milk storage chamber 13f. The milk flow port 40f is used to allow milk to flow from the milk guide channel 21f or the negative pressure chamber 31f into the milk storage chamber 13f. In a specific application, the nipple is inserted into or aligned with the milk guide channel 21f, and the suction pump of the breast pump 100f generates a suction negative pressure in the negative pressure chamber 31f. Through the communication between the negative pressure chamber 31f and the milk guide channel 21f, a suction negative pressure is generated in the milk guide channel 21f, thereby achieving milk extraction. The milk guide member 20f and the negative pressure member 30f are connected to the side of the container cover 12f facing the milk storage chamber 13f, or are inserted through the container cover 12f and extend into the milk storage chamber 13f, thereby forming a milk flow port 40f on the milk guide member 20f or the negative pressure member 30f, thereby achieving communication between the milk flow port 40f and the milk storage chamber 13f.

[0292] Please refer to Figures 41 and 42. The milk suction assembly also includes a one-way valve 50f, which is connected to at least one of the container cover 12f, the milk guide member 20f and the negative pressure member 30f and extends to the milk flow outlet, and is used to allow the milk in the milk guide channel 21f to flow one-way to the milk storage chamber 13f. In a specific application, the one-way valve 50f is located in the milk storage chamber 13f and blocks the milk flow port 40f. When the suction pump of the breast pump 100f generates suction negative pressure in the negative pressure chamber 31f, the one-way valve 50f is tightly attached to the milk flow port 40f under the action of the suction negative pressure, so that the milk flow port 40f is sealed and milk cannot pass through the milk flow port 40f; when the suction pump of the breast pump 100f is not working and the pressure in the negative pressure chamber 31f is normal, the one-way valve 50f blocks the milk flow port 40f, and milk flows from the negative pressure chamber 31f or the milk guide channel 21f to the milk storage chamber 13f under the action of gravity. The one-way valve 50f can be pushed open to flow into the milk storage chamber 13f through the milk flow port 40f.

[0293] By adopting the above technical solution, by connecting the one-way valve 50f to at least one of the container cover 12f, the milk guide 20f, and the negative pressure component 30f, when the milk pump assembly is disassembled (for example, when the various components of the milk pump assembly are disassembled for cleaning), the one-way valve 50f remains connected to at least one of the container cover 12f, the milk guide 20f, and the negative pressure component 30f. This greatly reduces the chance of losing the one-way valve 50f, and reduces the number of independent components of the milk pump assembly, thereby speeding up assembly and disassembly. Therefore, the milk pump assembly provided in this embodiment reduces the number of components, speeds up assembly and disassembly, and reduces the chance of component loss.

[0294] In one embodiment, the one-way valve 50f is a component made of a soft material, while the container cover 12f, the milk guide 20f, and the negative pressure component 30f are all components made of hard materials. The one-way valve 50f is fixedly connected to at least one of the container cover 12f, the milk guide 20f, and the negative pressure component 30f through an integrated injection molding process. In specific applications, the fixed connection is achieved through an integrated soft and hard plastic injection molding process, which effectively ensures the stability of the connection.

[0295] As an embodiment, the milk guide 20f and the negative pressure member 30f are arranged side by side and share a wall. When the breast pump 100f is placed on the breast, the negative pressure member 30f is located below the milk guide 20f. This arrangement, on the one hand, reduces the space occupied by the milk guide 20f and the negative pressure member 30f, thereby ensuring the space size of the milk storage chamber 13f; on the other hand, it is convenient for the user to check the flow of milk in the nipple channel, thereby helping to select the usage mode of the breast pump 100f. The shared wall means that the milk guide 20f and the negative pressure member 30f share a side wall, one side of which faces the milk guide channel 21f and the other side faces the negative pressure chamber 31f. Of course, in specific applications, as an alternative embodiment, it is also possible for the milk guide 20f and the negative pressure member 30f not to share a wall. For example, a connecting tube is provided between the two to connect the milk guide channel 21 and the negative pressure chamber 31. As another alternative embodiment, when the breast pump 100f is placed on the breast, the negative pressure member 30f can also be located above or beside the milk guide member 20f. Preferably, the milk guide member 20f and the negative pressure member 30f are integrally injection molded, effectively reducing the number of parts in the milk pump assembly and speeding up the assembly and disassembly of the milk pump assembly.

[0296] Referring to Figures 40, 41, and 43, the milk outlet 40f is formed on the side of the negative pressure member 30f away from the milk guide member 20f. When the breast pump 100f is placed on the breast, the negative pressure member 30f is located below the milk guide channel 21f. The milk outlet 40f is formed on the side of the negative pressure member 30f away from the milk guide member 20f, that is, the milk outlet 40f is located on the lower side of the negative pressure member 30f. Liquid flows downward under the action of gravity. The milk outlet 40f is located on the lower side of the negative pressure member 30f to ensure that as much milk as possible flows out of the negative pressure chamber 31f, preventing milk from being retained in the negative pressure chamber 31f and causing waste. Of course, in specific applications, as an alternative embodiment, the milk outlet 40f can also be opened at other locations of the negative pressure member 30f, such as at the end of the negative pressure member 30f away from the container cover 12f. As another alternative embodiment, it is also possible that the milk outlet 40f is formed in the milk guide piece 20f.

[0297] In one embodiment, the one-way valve 50f is fixedly connected to the milk guide member 20f and the negative pressure member 30f. This arrangement reduces the number of components in the milk pump assembly. Preferably, the one-way valve 50f, the negative pressure member 30f, and the milk guide member 20f are integrally injection molded. It is understood that in other embodiments, the one-way valve 50f may also be fixedly connected to other components, such as the milk guide member 20f, the negative pressure member 30f, or the container cover 12f.

[0298] 40 to 44 , one end of the one-way valve 50f is fixedly connected to the connection between the negative pressure member 30f and the milk guide member 20f, and the other end extends to the milk outlet 40f. This ensures both the connection of the one-way valve 50f and the opening and closing of the milk outlet 40f. In specific applications, in order to adapt to the miniaturized design of the breast pump 100f, the volume of the milk storage container 10f is small, which results in limited space under the milk guide piece 20f. In order to ensure the space size of the negative pressure chamber 31f, the cross-section of the negative pressure piece 30f is set to a rectangle, one of the long sides of which is connected to the milk guide piece 20f. In order to make the milk guide piece 20f match the nipple, the cross-section of the milk guide piece 20f is usually set to a circle. In this way, a groove 60f is formed at the connection between the negative pressure piece 30f and the milk guide piece 20f, and one end of the one-way valve 50f is fixedly connected to the connection between the negative pressure piece 30f and the milk guide piece 20f, that is, one end of the one-way valve 50f is fixed in the groove 60f, thereby improving the connection stability of the one-way valve 50f.

[0299] Referring to Figures 41 to 43 , the negative pressure member 30f includes a main body 32f and a clamping portion 33f. The main body 32f is arranged side by side with the milk guide 20f and shares a common wall. It is provided with a negative pressure chamber 31f and a milk outlet 40f. The clamping portion 33f is connected to the side of the main body 32f facing away from the negative pressure chamber 31f and is located near the milk outlet 40f. The clamping portion 33f and the main body 32f together form a clamping groove 34f for the one-way valve 50f to be inserted and limited. Specifically, the milk outlet 40f is formed on the side of the main body 32f away from the milk guide 20f and away from the container cover 12f. The clamping groove 34f is formed at one end of the main body 32f away from the container cover 12f.

[0300] In one embodiment, the milk guide 20f and the negative pressure member 30f are fixedly connected to the side of the container cover 12f facing the milk storage chamber 13f. This arrangement reduces the number of parts in the milking assembly. Preferably, the container cover 12f, the milk guide 20f, and the negative pressure member 30f are integrally injection molded. It is understood that in other embodiments, the milk guide 20f and the negative pressure member 30f may be disposed through the container cover 12f and extend into the milk storage chamber 13f.

[0301] Referring to Figures 41, 44, and 45, the one-way valve 50f includes a fixed portion 51f and a shielding portion 52f. The shielding portion 52f is used to shield the milk flow outlet 40f. The fixed portion 51f is fixedly connected to at least one of the container cover 12f, the milk guide 20f, and the negative pressure member 30f. The one-way valve 50f has a simple structure and is easy and quick to manufacture. In specific applications, when milk flows from the negative pressure chamber 31f to the milk storage chamber 13f, the shielding portion 52f opens the milk flow outlet 40f to allow milk to pass through. When milk flows from the milk storage chamber 13f to the negative pressure chamber 31f, the shielding portion 52f blocks the milk flow outlet 40f, preventing milk from entering the negative pressure chamber 31f through the milk flow outlet 40f, thereby preventing milk from flowing back into the negative pressure chamber 31f. In addition, in this embodiment, the fixing portion 51f is fixedly connected to the connection between the milk guide piece 20f and the negative pressure piece 30f, that is, the fixing portion 51f is fixed in the groove 60f, thereby greatly improving the connection stability of the one-way valve 50f.

[0302] Referring to Figures 43 and 45 , the one-way valve 50f also includes a latching portion 53f. This latching portion 53f is connected between the fixing portion 51f and the shielding portion 52f. It is designed to be inserted into the negative pressure member 30f or the milk guide member 20f near the milk outlet 40f to retain the shielding portion 52f in position. Specifically, the latching portion 53f is inserted into the latching slot 34f. This arrangement allows the latching portion 53f to retain the shielding portion 52f in position, ensuring that it rests tightly against the milk outlet 40f, thereby effectively shielding the milk outlet 40f.

[0303] Referring to Figures 44 and 45 , the fixing portion 51f includes two arms 511f, each connected to the opposite ends of the insertion portion 53f. Specifically, two grooves 60f are formed at the junction of the milk guide member 20f and the suction member 30f. These grooves 60f are located on either side of the sidewall shared by the milk guide member 20f and the suction member 30f, with one arm 511f secured within each groove 60f. This enhances the stability of the fixing portion 51f.

[0304] As an embodiment, the one-way valve 50f is a single-piece one-way valve. The single-piece one-way valve is small in size and occupies little space, thereby ensuring that the milk storage chamber 13f has a sufficiently large space.

[0305] 41 and 42 , the milk pump assembly further includes a sealing ring 14f disposed between the container body 11f and the container cover 12f to seal the milk storage chamber 13f, thereby preventing milk from leaking out of the milk storage chamber 13f.

[0306] Referring to Figures 40 and 41 , the container body 11f is provided with a milk pouring port 15f that communicates with the milk storage chamber 13f. The milk extraction assembly further includes a sealing plug 16f. One end of the sealing plug 16f detachably seals the milk pouring port 15f, while the other end extends through the container cover 12f and connects to the sealing ring 14f. In a specific application, when the breast pump 100f is used to express milk, the sealing plug 16f seals against the milk pouring port 15f. After the milk is extracted, it ultimately flows into the milk storage chamber 13f for temporary storage, rather than flowing out of the milk pouring port 15f. After the breast pump 100f has finished expressing milk from one or both breasts, the sealing plug 16f is detached from the milk pouring port 15f, and the milk in the milk storage chamber 13f can be poured out through the milk pouring port 15f. It is understood that in other embodiments, the milk pouring port 15f can also be located on the container cover 12f.

[0307] In one embodiment, the sealing ring 14f and the sealing plug 16f are both made of a soft material and are integrally injection-molded with at least the container cover 12f. This reduces the number of components in the milking assembly and reduces the risk of component loss, particularly for smaller components like the sealing plug 16f. In this embodiment, the sealing ring 14f, the sealing plug 16f, the container cover 12f, the milk guide 20f, and the suction member 30f are integrally molded.

[0308] Referring to Figures 40, 41, and 46, the breast pump assembly further includes a main unit housing 70f and a breast shield 80f. The breast shield 80f includes a first side portion 81f and a second side portion 82f disposed opposite the first side portion 81f. The first side portion 81f is configured to be placed over the breast. The main unit housing 70f is disposed between the container cover 12f and the second side portion 82f. When the milk guide 20f and the negative pressure member 30f are disposed through the container cover 12f and extend into the milk storage chamber 13f, both the milk guide 20f and the negative pressure member 30f are connected to the main unit housing 70f or the breast shield 80f.

[0309] Furthermore, the embodiment of the present application also provides a breast pump 100f, comprising the above-mentioned milk pumping assembly. By adopting the above-mentioned milk pumping assembly, the number of parts is reduced, the assembly and disassembly speed is accelerated, and the probability of part loss is reduced.

[0310] As an embodiment, breast pump 100f further includes a pump body and a solenoid valve, both of which are disposed within main body housing 70f. When the pump body is operating, the solenoid valve is deactivated, allowing the pump body to draw air away and generate negative pressure. When the solenoid valve is activated, the pump body is deactivated, opening the solenoid valve and allowing air to flow into negative pressure chamber 31f.

[0311] Please refer to Figures 47-50, Figure 47 is a structural schematic diagram of a breast pump according to an embodiment of the present application; Figure 48 is a schematic diagram of the decomposed structure of a breast pump according to an embodiment of the present application; Figure 49 is a schematic diagram of the decomposed structure of a breast pump main unit and a heat sink according to an embodiment of the present application; Figure 50 is a schematic diagram of the cross-sectional structure of the transverse portion of the breast pump main unit according to an embodiment of the present application.

[0312] In this embodiment, the breast pump may include: a milk bowl assembly 10h, a main unit 20h, a breast shield 30h, and a heat sink 80h.

[0313] A milk storage space is formed within the milk bowl assembly 10h. The milk bowl assembly 10h includes a milk bowl 11h and a cover 12h, which enclose the milk storage space. Optionally, the cover 12h includes a groove 121h extending into the milk storage space and a negative pressure chamber 122h. The negative pressure chamber 122h houses a diaphragm, which transmits negative pressure and provides air-liquid isolation between the main unit 20h and the pumping side to prevent milk from seeping back into the main unit 20h.

[0314] The breast shield 30h has a wide end and a narrow end, and the inner diameter of the breast shield 30h gradually increases from the narrow end to the wide end. The narrow end of the breast shield 30h passes through the through hole 221h and is inserted into the groove 121h, communicating with the inner space of the groove 121h.

[0315] The host 20h includes a negative pressure pump 201h, which is used to provide negative pressure for the breast pump to suck milk.

[0316] The heat sink 80h is at least partially disposed between the negative pressure pump 201h and the milk bowl assembly 10h. For example, the heat sink 80h may be further disposed between the solenoid valve and the milk bowl assembly 10h.

[0317] Through the above method, a heat sink 80h is set between the negative pressure pump 201h and the milk bowl assembly 10h, and the heat of the negative pressure pump 201h is conducted to the gap between the milk bowl assembly 10h and the main unit 20h, thereby diffusing into the air, or the heat is conducted to the milk bowl assembly 10h, and the milk in the milk bowl assembly 10h is used for heat dissipation, thereby effectively improving the heating problem of the main unit 20h.

[0318] Optionally, the main unit 20h includes a transverse portion 21h and a longitudinal portion 22h bent and connected to the transverse portion 21h. The first side surface of the milk bowl assembly 10h contacts the longitudinal portion 22h of the main unit 20h, and the second side surface of the milk bowl assembly 10h contacts the transverse portion 21h of the main unit 20h. The first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly 10h. By configuring the main unit 20h in an L-shape and placing the milk bowl assembly 10h on the L-shaped step, the contact area between the main unit 20h and the milk bowl assembly 10h can be increased while reducing the overall volume of the breast pump, fully utilizing the milk bowl assembly 10h to dissipate heat from the main unit 20h.

[0319] In one embodiment, the negative pressure pump 201h is located within the transverse portion 21h of the main unit 20h. A mounting hole 211h is provided on one side of the transverse portion 21h near the milk bowl assembly 10h, and the heat sink 80h is at least partially disposed within the mounting hole 211h. If the main unit 20h is configured in an L-shape, there is ample space for the negative pressure pump 201h to be positioned within the transverse portion 21h of the main unit 20h. Furthermore, the mounting hole 211h is provided on the side of the transverse portion 21h facing the milk bowl assembly 10h, and the heat sink 80h is disposed thereon, thereby increasing the efficiency of heat conduction between the main unit 20h and the outside world.

[0320] In one embodiment, the heat sink 80h includes a first portion 81h and a second portion 82h that is bent and connected to the first portion 81h. The first portion 81h is disposed between the negative pressure pump 201h and the milk bowl assembly 10h, and the first portion 81h and the second portion 82h are respectively disposed on two adjacent side surfaces of the negative pressure pump 201h. By providing the heat sink 80h with two adjacent sides surrounding the negative pressure pump 201h, the heat conduction efficiency of the heat sink 80h and the negative pressure pump 201h can be increased, thereby enhancing the heat dissipation effect.

[0321] In one embodiment, a mounting step 212h is provided on a side of the heat sink 80h adjacent to the milk bowl assembly 10h. The mounting step 212h engages with a mounting hole 211h in the transverse portion 21h to retain the heat sink 80h within the transverse portion 21h. The mounting step 212h retains the heat sink 80h within the transverse portion 21h, ensuring a secure installation and preventing it from falling off.

[0322] In one embodiment, the heat sink 80h is exposed through the mounting hole 211h and contacts the milk bowl assembly 10h when the milk bowl assembly 10h and the main unit 20h are assembled. Exposing the heat sink 80h through the mounting hole 211h further reduces the problem of low heat dissipation efficiency caused by the isolation of the main unit 20h housing. It should be understood that in some embodiments, the heat sink 80h can be a heat sink attached to the outer surface of the main unit 20h and located between the main unit 20h and the milk bowl assembly 10h. The present invention is not limited to the embodiment in which the heat sink 80h is exposed through the mounting hole 211h.

[0323] In one embodiment, the heat sink 80h is made of metal. For example, the heat sink 80h can be made of copper, aluminum, or a combination of copper and aluminum. In some embodiments, the heat sink 80h can also be made of non-metallic materials, such as ceramics, graphene, and other non-metallic materials with good thermal conductivity.

[0324] In one embodiment, the main unit 20h is formed with a through-hole 221h extending through the thickness thereof, the narrow end of the breast shield 30 is passed through the through-hole 221h, and the main unit 20h is at least partially located between the wide end of the breast shield 30 and the milk bowl assembly 10. This embodiment of the present application reduces the overall thickness of the breast pump by forming a through-hole 221h extending through the thickness thereof in the main unit 20, the narrow end of the breast shield 30h being passed through the through-hole 221h, and the main unit 20h being at least partially located between the wide end of the breast shield 30h and the milk bowl assembly 10h.

[0325] Optionally, the through hole 221h is provided on the longitudinal portion 22h, which is located between the wide end of the breast shield 30h and the milk bowl assembly 10h.

[0326] Optionally, the negative pressure pump 201h can be a piezoelectric pump. The negative pressure pump in the embodiment of the present application can be an electric piston pump, an electric vortex pump, an electric diaphragm pump, an air pump type negative pressure pump, a piezoelectric pump, etc., and the embodiment of the present application does not limit this. These negative pressure pumps have heating problems to varying degrees. The problem is particularly prominent in voltage pumps. A piezoelectric pump is a fluid driver. It does not require an additional drive motor, but uses the inverse piezoelectric effect of the piezoelectric medium to deform the piezoelectric vibrator, and then the deformation generates a volume change in the pump chamber to achieve fluid output or use the piezoelectric vibrator to generate fluctuations to drive the fluid to form negative pressure. The piezoelectric pump is small in size, low in noise, and has a fast response speed. However, there are also some problems, such as the heating problem is more serious than that of a traditional air pump. In one embodiment, the piezoelectric pump can be a piezoelectric ceramic pump.

[0327] The embodiment of the present application provides a breast pump comprising a bowl assembly, a breast shield, a main unit, and a heat sink. The bowl assembly has a milk storage space formed therein; the breast shield has a wide end and a narrow end, and the inner diameter of the breast shield gradually increases from the narrow end to the wide end; the main unit includes a negative pressure pump, which is used to provide negative pressure for the breast pump to suck milk; and the heat sink is at least partially disposed between the negative pressure pump and the bowl assembly. By disposing the heat sink between the negative pressure pump and the bowl assembly, the heat from the negative pressure pump is transferred to the gap between the bowl assembly and the main unit, where it is diffused into the air, or the heat is transferred to the bowl assembly, thereby effectively alleviating the problem of main unit heating.

[0328] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0329] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A breast pump, characterized in that: The breast pump comprises: A milk bowl assembly, wherein a milk storage space is formed in the milk bowl assembly; A main unit, wherein the main unit is formed with a through hole extending through the thickness direction; a breast shield, the breast shield having a narrow end and a wide end, the narrow end of the breast shield being passed through the through hole, and the main unit being at least partially located between the wide end of the breast shield and the milk bowl assembly; A diaphragm bracket is connected to the milk bowl assembly and extends into the milk storage space.

2. The breast pump according to claim 1, wherein: The breast pump further comprises a milk suction duct connected to the milk bowl assembly and extending into the milk storage space, wherein the milk suction duct is communicated with the inner space of the breast shield, and a length of the milk suction duct extending into the milk storage space is less than a length of the diaphragm support.

3. The breast pump according to claim 2, wherein: The end portion of the milk suction duct away from the breast shield is provided with a milk outlet, and the milk outlet is used for the milk in the milk suction duct to flow into the milk storage space.

4. The breast pump according to claim 3, wherein: The sum of the lengths of the milk suction duct and the milk outlet is less than or equal to the length of the diaphragm support.

5. The breast pump according to claim 2, wherein: The milk bowl assembly includes a bowl body and a cover plate, wherein the bowl body and the cover plate enclose the milk storage space, and the milk suction duct and the diaphragm bracket are both connected to the cover plate.

6. The breast pump according to claim 5, wherein: The milk suction duct and the diaphragm bracket are connected to the cover plate as a whole.

7. The breast pump according to claim 6, wherein: The milk suction duct and the diaphragm support are arranged side by side.

8. The breast pump according to claim 7, wherein: The milk suction duct is located above the diaphragm support.

9. The breast pump according to claim 1, wherein: The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion, the through hole is provided on the longitudinal portion, the longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly, a first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and a second side surface of the milk bowl assembly contacts the transverse portion of the main unit, and the first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly.

10. The breast pump according to claim 2, wherein: The breast pump also includes a diaphragm, which is used to be placed in the diaphragm support. The diaphragm divides the internal space of the diaphragm support into a first subspace and a second subspace. The first subspace is connected to the negative pressure interface of the host, and the second subspace is connected to the internal space of the milk suction duct. The diaphragm can be deformed in the internal space of the diaphragm support under the drive of the negative pressure provided by the host to transmit negative pressure.

11. A breast pump, characterized in that: The breast pump comprises: A host, which is used to provide negative pressure for breast pumping; A milk bowl assembly, the milk bowl assembly is used to hold milk, and the milk bowl assembly is arranged on the first side of the main unit; A breast shield having a narrow end and a wide end, wherein the inner diameter of the breast shield gradually increases from the narrow end to the wide end, the wide end of the breast shield is arranged on a second side of the main unit away from the first side, and the breast shield is connected to the main unit.

12. The breast pump according to claim 11, wherein The breast shield is detachably connected to the host.

13. The breast pump according to claim 11, wherein: The breast pump further comprises a milk suction duct connected to the milk bowl assembly, wherein the milk suction duct extends into the milk storage space of the milk bowl assembly, and the narrow end of the breast shield is communicated with the end of the milk suction duct.

14. The breast pump according to any one of claims 11 to 13, wherein: The main unit is formed with a through hole running through the thickness direction, the narrow end of the breast shield is inserted into the through hole, and the narrow end of the breast shield cooperates with the through hole to achieve the connection between the breast shield and the main unit.

15. The breast pump according to claim 14, wherein: One of the outer wall of the narrow end and the inner wall of the through hole is provided with a groove, and the other is provided with a marble. The marble cooperates with the groove to achieve the connection between the breast shield and the host.

16. The breast pump according to claim 14, wherein: The narrow end is interference-fitted with the through hole to achieve connection between the breast shield and the host.

17. The breast pump according to claim 14, wherein: One of the outer wall of the narrow end and the inner wall of the through hole is provided with a buckle, and the other is provided with a slot. The buckle cooperates with the slot to achieve the connection between the breast shield and the host.

18. The breast pump according to any one of claims 11 to 13, wherein: One of the main unit and the breast shield is provided with a positioning groove, and the other is provided with a positioning protrusion.

19. The breast pump according to claim 14, wherein: The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion, the through hole is provided on the longitudinal portion, the longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly, a first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and a second side surface of the milk bowl assembly contacts the transverse portion of the main unit, and the first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly.

20. The breast pump according to claim 13, wherein The end surface of the narrow end abuts against the end surface of the milk suction duct, so that the narrow end is in sealed communication with the milk suction duct.

21. A breast pump, characterized in that: The breast pump comprises: a breast shield having a wide end and a narrow end, wherein the inner diameter of the breast shield gradually increases from the narrow end to the wide end; A milk bowl assembly, wherein a milk storage space is formed in the milk bowl assembly; a milk suction duct connected to the milk bowl assembly and extending into the milk storage space, the milk suction duct being in communication with the breast shield, and the milk storage space being used to receive milk flowing out of the milk suction duct; A main unit, configured to provide negative pressure for milk extraction into the milk extraction duct; Wherein, the center of gravity of the breast pump is in the milk suction duct or the narrow end of the breast shield when the milk storage space is empty.

22. The breast pump according to claim 21, wherein The host is provided with a through hole, the breast shield is passed through the through hole, and the host is located between the wide end of the breast shield and the milk bowl assembly.

23. The breast pump according to claim 21, wherein A through hole is provided on the main unit, and the center of gravity of the main unit is located in the through hole.

24. The breast pump according to claim 23, wherein: The host includes a shell and a negative pressure pump, a solenoid valve, a first battery and a second battery arranged in the shell. The negative pressure pump and the solenoid valve are both located below the through hole, and the first battery and the second battery are respectively located on the left and right sides of the through hole.

25. The breast pump according to claim 24, wherein: The host further includes a circuit board located in the shell, and the circuit board is located above the through hole.

26. The breast pump according to claim 22, wherein: The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion, the through hole is provided on the longitudinal portion, the longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly, a first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and a second side surface of the milk bowl assembly contacts the transverse portion of the main unit, and the first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly.

27. The breast pump according to claim 24, wherein: The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion, the through hole is provided on the longitudinal portion, the longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly, a first side surface of the milk bowl assembly contacts the longitudinal portion of the main unit, and a second side surface of the milk bowl assembly contacts the transverse portion of the main unit, the first side surface and the second side surface are two adjacent side surfaces of the milk bowl assembly, and the negative pressure pump and the solenoid valve are provided inside the transverse portion.

28. The breast pump according to claim 24, wherein: The negative pressure pump is a piezoelectric pump.

29. The breast pump according to any one of claims 21 to 28, wherein: The milk bowl assembly comprises a bowl body and a cover plate, wherein the bowl body and the cover plate enclose the milk storage space, and the milk suction duct is connected to the cover plate.

30. The breast pump according to claim 29, wherein The milk suction duct and the cover plate are integrated.

31. A milk suction assembly, used in a breast pump, characterized in that: include: fixings; a diaphragm support, the diaphragm support being connected to the fixing member and having a negative pressure cavity; an outer milk guide member connected to the fixing member, and when the breast pump is placed on the breast, the outer milk guide member is located above the diaphragm support; the outer milk guide member is provided with a first milk guide channel, a milk flow hole connecting the first milk guide channel and the milk storage chamber of the breast pump, and a first air guide hole connecting the first milk guide channel and the negative pressure chamber; an inner milk guide piece, at least partially extending into the first milk guide channel, the inner milk guide piece being provided with a second milk guide channel and a second air guide hole communicating with the second milk guide channel, the second milk guide channel being in communication with the first milk guide channel; The inner sidewalls of the inner milk guide piece and the outer milk guide piece are combined to form an air guide channel, the first air guide hole and the second air guide hole are both connected to the air guide channel, and the second air guide hole is located above the central axis of the second milk guide channel when the breast pump is placed on the breast.

32. A breast pump assembly according to claim 31, wherein When the breast pump is placed on the breast, the angle between the line connecting the second air guide hole and the central axis of the second milk guide channel and the horizontal plane is 80° to 100°.

33. A breast pump assembly according to claim 31 or 32, wherein: The inner milk guide piece includes a milk guide body and a soft rubber ring; The milk guide body extends into the first milk guide channel, and is provided with the second milk guide channel and a first through-hole connected to the second milk guide channel; the soft rubber ring is arranged on the outer periphery of the milk guide body and is located between the milk guide body and the outer milk guide piece, and the soft rubber ring is provided with a first annular groove and a second through-hole connected to the first annular groove, and the outer milk guide piece seals the first annular groove to form the air guide channel, and the first through-hole and the second through-hole correspond to form the second air guide hole.

34. A breast pump assembly according to claim 33, wherein The outer side wall of the milk guide body is provided with a second annular groove, and the soft rubber ring is embedded in the second annular groove.

35. A breast pump assembly according to claim 34, wherein The second annular groove is formed at one end of the milk guide body extending into the first milk guide channel.

36. A breast pump assembly according to claim 31, wherein The inner layer milk conducting piece is detachably connected to the outer layer milk conducting piece.

37. A breast pump assembly according to claim 33, wherein The milk suction assembly further includes an elastic diaphragm and a negative pressure cavity cover, wherein the elastic diaphragm is circumferentially connected to the diaphragm support and extends into the negative pressure cavity, and the negative pressure cavity cover is disposed at the opening of the negative pressure cavity and seals the negative pressure cavity; The negative pressure chamber cover is connected to the milk guide body and is integrally formed with the milk guide body.

38. A breast pump assembly according to claim 33, wherein The milk suction assembly further includes a handle, which is connected to the milk guide body and is integrally formed with the milk guide body.

39. A breast pump assembly according to claim 31, wherein The breast pump assembly also includes a container body, a sealing cover, a main body shell and a breast shield; The sealing cover covers and seals the container body, and together with the container body, forms a milk storage cavity; the main body housing is arranged between the sealing cover and the breast shield, and the breast shield is used to cover the breast; The fixing member is the sealing cover or the main unit housing or the breast shield, and the outer milk guide member and the diaphragm bracket both extend from the fixing member toward the direction close to the milk storage cavity.

40. A breast pump, characterized in that: Comprising a breast pump assembly as claimed in any one of claims 31 to 39.

41. A milk suction assembly, used in a breast pump, characterized in that: include: A milk storage container, comprising a container body and a container cover, wherein the container cover and the container body enclose a milk storage cavity; A milk guide piece, the milk guide piece is connected to the side of the container cover facing the milk storage chamber or is connected to the fixing piece of the breast pump and extends through the container cover into the milk storage chamber, the milk guide piece having a milk guide channel; Wherein, the container cover is provided with a milk pouring port connected to the milk storage cavity, and the milk suction assembly further comprises a sealing member, which is used to seal the milk pouring port.

42. A breast pump assembly according to claim 41, wherein When the breast pump is placed on a breast, the milk pouring port is located above the milk guide piece.

43. A breast pump assembly according to claim 42, wherein The container cover comprises a first plate and a second plate, wherein the second plate extends from the first plate in a direction gradually approaching the milk storage cavity, and an angle between the second plate and the first plate is greater than 90° and less than 180°; The milk guide is connected to the first plate, and the milk pouring port is opened on the second plate.

44. A breast pump assembly according to claim 41, wherein One end of the sealing member detachably seals the milk pouring port, and the other end is connected to the container cover. The sealing member and the container cover are integrally injection-molded.

45. A breast pump assembly according to claim 41, wherein The milk storage container further comprises a sealing ring, which is provided between the container body and the container cover; One end of the sealing member detachably seals the milk pouring port, and the other end passes through the container cover and is connected to the sealing ring. The sealing member, the sealing ring and the container cover are integrally injection-molded.

46. ​​A breast pump assembly according to claim 41, wherein A milk outlet is provided at one end of the milk guide piece facing the milk storage cavity, and the milk outlet is used to connect the milk guide channel and the milk storage cavity.

47. A breast pump assembly according to claim 41, wherein When the breast pump is placed on the breast, at least the upper half of the container body and at least the upper half of the milk guide piece are both made of optically transparent material.

48. A breast pump assembly according to any one of claims 41 to 47, wherein The milk pump assembly further includes a diaphragm bracket, which is connected to a side of the container cover facing the milk storage cavity or is connected to a fixing member of the breast pump and extends through the container cover into the milk storage cavity; When the breast pump is placed on the breast, the diaphragm support is located below the milk guide piece.

49. A breast pump assembly according to any one of claims 41 to 47, wherein The breast pump assembly further comprises a main unit housing and a breast shield, wherein the main unit housing is arranged between the container cover and the breast shield, and the breast shield is used to cover the breast; The fixing member is the main unit housing or the breast shield.

50. A breast pump, characterized in that: Comprising a breast pump assembly as claimed in any one of claims 41 to 49.

51. A diaphragm assembly, used in a breast pump, characterized in that: include: an elastic diaphragm having a cavity and an opening communicating with the cavity; a diaphragm cover, the diaphragm cover being detachably covered on the opening and having a first through hole extending therethrough; A connecting piece, one end of which is fixedly connected to the elastic diaphragm, and the other end of which is fixedly connected to the diaphragm cover.

52. The diaphragm assembly of claim 51, wherein: The connecting piece is configured to enable the diaphragm cover to be flipped over and covered on the opening.

53. The diaphragm assembly of claim 52, wherein: The connecting piece includes a connecting portion, an embedded portion and a bendable portion; The bendable portion is connected between the connecting portion and the embedded portion and is bendable. The connecting portion is fixedly connected to the elastic diaphragm. A mounting groove is provided on a side of the diaphragm cover away from the cavity. The embedded portion is embedded in the mounting groove. The first through hole is formed on the bottom wall of the installation groove or on the diaphragm cover outside the area where the installation groove is located.

54. The diaphragm assembly of claim 51, wherein: The connecting piece and the elastic diaphragm are both made of soft rubber material, the diaphragm cover is made of hard rubber material, the connecting piece and the elastic diaphragm are integrally formed and / or the connecting piece and the diaphragm cover are integrally formed.

55. The diaphragm assembly of claim 51, wherein: The elastic diaphragm comprises a bottom wall, two long side walls and two short side walls; The two short side walls are arranged opposite to each other and are respectively connected between the two long side walls. The bottom wall, the two long side walls and the two short side walls enclose the cavity. The two long side walls and the ends of the two short side walls away from the bottom wall enclose the opening. The bottom wall is arranged opposite to the opening. The connecting piece is fixedly connected to one end of one of the short side walls close to the opening.

56. The diaphragm assembly of claim 55, wherein: One of the long side walls is provided with an avoidance groove, the avoidance groove is used to avoid the milk guide channel of the breast pump, and the outer contour of the diaphragm cover matches the shape of the opening; and / or, The diaphragm assembly further includes a lug connected to an end of the other short side wall adjacent to the opening.

57. The diaphragm assembly of claim 51, wherein: The diaphragm cover includes a cover body and a limiting protrusion; The limiting protrusion is connected to one side of the cover body, the cover body is covered with the opening, the limiting protrusion extends into the cavity and abuts against the elastic diaphragm to limit the cover body; The connecting member is fixedly connected to a side of the cover body away from the limiting protrusion.

58. The diaphragm assembly of claim 57, wherein: The limiting protrusion is annular; or, The limiting protrusion includes a plurality of protrusions arranged in a ring-shaped manner and spaced apart.

59. A breast pump, characterized in that: Comprising a diaphragm assembly as claimed in any one of claims 51 to 58.

60. The breast pump of claim 59, wherein: The breast pump also includes a milk pumping assembly, a main unit and a breast shield; The milk suction assembly is provided with a negative pressure chamber and a milk guide channel connected to the negative pressure chamber, the elastic diaphragm is provided in the negative pressure chamber, and the milk guide channel is used to guide milk; The host is arranged between the milk pump assembly and the breast shield, and the breast shield is used to cover the breast; The first through hole is used to connect the cavity and the suction pump of the host.

61. A milk suction assembly, used in a breast pump, characterized in that: include: A milk storage container, comprising a container body and a container cover, wherein the container cover and the container body enclose a milk storage cavity; A milk guide piece and a negative pressure piece, each of which is connected to a side of the container cover facing the milk storage chamber or is provided through the container cover and extends into the milk storage chamber. The milk guide piece has a milk guide channel, and the negative pressure piece has a negative pressure chamber connected to the milk guide channel. The milk guide piece or the negative pressure piece is further provided with a milk flow port connected to the milk storage chamber, and the milk flow port is used to allow milk to flow from the milk guide channel or the negative pressure chamber into the milk storage chamber. A one-way valve is connected to at least one of the container cover, the milk guide member and the negative pressure member and extends to the milk flow port, and is used to allow the milk in the milk guide channel to flow to the milk storage cavity in a one-way manner.

62. A breast pump assembly according to claim 61, wherein The one-way valve is a component made of soft material, the container cover, the milk guide piece and the negative pressure piece are all components made of hard material, and the one-way valve is fixedly connected to at least one of the container cover, the milk guide piece and the negative pressure piece through an integrated injection molding process.

63. A breast pump assembly according to claim 61, wherein The milk guide piece and the negative pressure piece are arranged side by side and share a common wall, and the milk outlet is formed on a side of the negative pressure piece away from the milk guide piece; When the breast pump is placed on the breast, the negative pressure member is located below the milk guide member; One end of the one-way valve is fixedly connected to the connection between the negative pressure piece and the milk guide piece, and the other end extends to the milk flow port.

64. A breast pump assembly according to claim 63, wherein The negative pressure member includes a main body and a clamping portion; The main body and the milk guide are arranged side by side and share a common wall, and are provided with the negative pressure cavity and the milk flow port. The clamping portion is connected to a side of the main body facing away from the negative pressure cavity and is arranged close to the milk flow port. The clamping portion and the main body are combined to form a clamping groove for the one-way valve to be inserted and limited.

65. A breast pump assembly according to any one of claims 61 to 64, characterized in that The one-way valve includes a fixing portion, a blocking portion and a plug-in portion; The inserting portion is connected between the fixing portion and the shielding portion, and is used to be inserted into the negative pressure member or the milk guide member near the milk flow outlet to limit the shielding portion; the fixing portion is fixedly connected to at least one of the container cover, the milk guide member and the negative pressure member, and the shielding portion is used to shield the milk flow outlet.

66. A breast pump assembly according to claim 65, characterized in that The fixing portion includes two supporting arms, and the two supporting arms are respectively connected to two ends of the inserting portion.

67. A breast pump assembly according to any one of claims 61 to 64, characterized in that The one-way valve is a single-piece one-way valve.

68. A breast pump assembly according to any one of claims 61 to 64, wherein The milk storage container also includes a sealing ring and a sealing plug; The sealing ring is provided between the container body and the container cover and is used to seal the milk storage cavity; The milk storage container is provided with a milk pouring port communicating with the milk storage cavity, one end of the sealing plug detachably seals the milk pouring port, and the other end passes through the container cover and is connected to the sealing ring; The sealing plug and the sealing ring are at least integrally injection-molded with the container cover.

69. A breast pump assembly according to any one of claims 61 to 64, characterised in that The breast pump assembly also includes a main body shell and a breast shield; The breast shield includes a first side portion and a second side portion arranged opposite to the first side portion, the first side portion is used for covering the breast, and the main body shell is arranged between the container cover and the second side portion.

70. A breast pump, characterized in that: Comprising a breast pump assembly as claimed in any one of claims 61 to 69.

71. A breast pump, characterized in that: The breast pump comprises: A milk bowl assembly, wherein a milk storage space is formed inside the milk bowl assembly; a breast shield having a wide end and a narrow end, wherein the inner diameter of the breast shield gradually increases from the narrow end to the wide end; A host, the host comprising a negative pressure pump, the negative pressure pump being used to provide negative pressure for the breast pump to suck milk; A heat sink is at least partially disposed between the negative pressure pump and the milk bowl assembly.

72. The breast pump according to claim 71, wherein The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion. The first side of the milk bowl assembly contacts the longitudinal portion of the main unit, and the second side of the milk bowl assembly contacts the transverse portion of the main unit. The first side and the second side are two adjacent sides of the milk bowl assembly.

73. The breast pump according to claim 72, wherein: The negative pressure pump is located in the transverse part of the main unit, a mounting hole is provided on a side surface of the transverse part close to the milk bowl assembly, and the heat sink is at least partially provided in the mounting hole.

74. A breast pump according to any one of claims 71 to 73, characterized in that The heat sink includes a first part and a second part that is bent and connected to the first part. The first part is arranged between the negative pressure pump and the milk bowl assembly. The first part and the second part are respectively arranged on two adjacent side surfaces of the negative pressure pump.

75. The breast pump of claim 73, wherein: A side of the heat sink close to the milk bowl assembly is provided with an assembly step, and the assembly step cooperates with the mounting hole of the transverse portion to limit the heat sink within the transverse portion.

76. A breast pump according to claim 75, characterized in that The heat sink is exposed through the mounting hole, and the heat sink is in contact with the milk bowl assembly when the milk bowl assembly and the main machine are assembled.

77. A breast pump according to any one of claims 71 to 73, characterized in that The heat sink is made of metal.

78. The breast pump of claim 71, wherein: The main unit is formed with a through hole running through the thickness direction, the narrow end of the breast shield is passed through the through hole, and the main unit is at least partially located between the wide end of the breast shield and the milk bowl assembly.

79. The breast pump according to claim 78, wherein The main unit includes a transverse portion and a longitudinal portion bent and connected to the transverse portion. The through hole is provided on the longitudinal portion, and the longitudinal portion is located between the wide end of the breast shield and the milk bowl assembly.

80. The breast pump of claim 71, wherein: The negative pressure pump is a piezoelectric pump.

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