Negative pressure connecting assembly for breast pump

Abstract

The utility model provides a negative pressure connecting assembly for a breast pump, which relates to the technical field of breast pumps and comprises a tubular side plate, a bottom plate, an air bag and a duckbill valve. The pipes of the side plates extend in the vertical direction; a pipe opening above the side plate is a horn cover connecting opening; a pipe opening below the side plate is a feeding bottle connecting opening; a communicating opening is formed in the pipe side wall of the side plate; a bottom plate is sealed at the feeding bottle connector; an air bag is fixed above the bottom plate; an inner cavity of the air bag is communicated with the communication port; a fixing hole is formed in the bottom plate; the fixing hole penetrates through the bottom plate in the vertical direction; the duckbill valve is fixed in the fixing hole in a sealed mode. The inlet opening direction of the duckbill valve is upward; an inlet of the duckbill valve faces the horn cover connecting port; and the outlet of the duckbill valve is opened downwards. According to the negative pressure connecting assembly for the breast pump, the problem that a mother inconveniently shields the breast pump and the chest through clothes is solved, the mother can conveniently shield the breast pump and the chest through the clothes, and therefore privacy is better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of breast pumps, in particular to a negative pressure connection component for a breast pump. Background Art

[0002] A breast pump is a commonly used tool for lactating mothers. A breast pump usually includes a breast pump shield and a breast pump main unit. The breast pump main unit is used to provide and control suction. The breast pump shield part usually includes a cover body, a three-way joint, and a milk bottle; the three-way joint includes a milk inlet, a negative pressure port, and a milk outlet. A cover body is arranged at the milk inlet, the negative pressure port is connected to the breast pump main unit, a one-way valve is arranged at the milk outlet, and a milk bottle is arranged. When the breast pump main unit works, the air pressure in the three-way joint changes, causing the mother's breast in contact with the cover to be subjected to suction, so that milk is secreted from the nipple of the breast into the three-way joint. The milk accumulates at the milk outlet and passes through the one-way valve into the milk bottle, and this process is repeated until the milk sucking is completed.

[0003] In the prior art, as disclosed in a breast milk sucking pad and a breast pump with the Chinese patent application number 202122324169.0, it discloses the structure and working principle of a breast pump. It uses the upper connector of a three-way joint to connect a negative pressure device, and air holes are arranged on the negative pressure device for connecting an external suction pump. When the suction pump works to generate suction, the negative pressure device generates negative pressure. The negative pressure generated by the negative pressure device causes the air pressure in the three-way joint to change, so that suction is generated at the bell mouth. After the milk enters from the bell mouth, it will flow to the lower connector and flow into the milk bottle connected to the lower connector.

[0004] However, when a mother uses a breast pump, some mothers, out of privacy considerations, will cover the breast pump and the breast with clothes after the breast pump is fixed to the breast. In the above-mentioned comparative document, the upper connector of the protruding three-way joint and the negative pressure device fixed to the upper connector cause the negative pressure device and other structures to extend far in the direction away from the breast when the mother uses the breast pump, and the structure of the negative pressure device faces the clothes; therefore, when the clothes block the breast pump, the clothes will contact the structure part of the negative pressure device, and the negative pressure device will cause the clothes to protrude excessively, resulting in a large gap between the clothes and the breast, so that the clothes cannot effectively block the breast and protect privacy; moreover, the pipeline connecting the negative pressure device to the external air source usually extends in the direction away from the opening direction of the bell mouth. When the clothes cover part of the breast pump, the clothes will squeeze the pipeline, causing the clothes to exert pressure on the pipeline, resulting in the pipeline being bent, and the bending of the pipeline may cause the external air source to be unable to be normally connected to the inside of the three-way joint, affecting the milk sucking effect. Summary of the Utility Model

[0005] In view of the above technical problems, the negative pressure connection component for a breast pump provided by the utility model can prevent the overly wide structure of the breast pump from lifting the clothes covering the chest, resulting in the mother exposing her privacy.

[0006] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0007] The negative pressure connection assembly for a breast pump provided by the present utility model includes a tubular side plate, a bottom plate, an airbag, and a duckbill valve; the tube of the side plate extends vertically; the upper nozzle of the side plate is a bell cover connection port; the lower nozzle of the side plate is a milk bottle connection port; a communication port is provided on the side wall of the tube of the side plate; the bottom plate is sealed at the milk bottle connection port; the airbag is fixed above the bottom plate; the internal cavity of the airbag communicates with the communication port; a fixing hole is provided on the bottom plate; the fixing hole penetrates the bottom plate in the vertical direction; the duckbill valve is sealed and fixed in the fixing hole; the inlet opening direction of the duckbill valve is upward; the inlet of the duckbill valve faces the bell cover connection port; the outlet opening direction of the duckbill valve is downward.

[0008] The negative pressure connection assembly for a breast pump provided by the present utility model, preferably, the airbag includes a hood-shaped flexible film; a part of the edge of the flexible film is hermetically attached and fixed to the upper surface of the bottom plate; the upper surface of the bottom plate, the inner hood-shaped surface of the flexible film, and part of the inner wall of the side plate form a sealed space; the communication port communicates with the sealed space.

[0009] 4. The negative pressure connection assembly for a breast pump provided by the present utility model, preferably, further includes an upper housing; a negative pressure hole is provided vertically on the upper housing; the flexible film is fixed on the upper housing; the flexible film seals the upper opening of the negative pressure hole; the inner hood-shaped wall of the flexible film faces the negative pressure hole; the upper housing is detachably fixed on the bottom plate; a receiving groove with an upper opening is provided on the bottom plate; when the upper housing is fixed on the bottom plate, the lower opening of the negative pressure hole is hermetically communicated with the upper opening of the receiving groove; the communication port penetrates the side wall of the receiving groove; the communication port communicates with the receiving groove.

[0010] The negative pressure connection assembly for a breast pump provided by the present utility model, preferably, a duckbill valve limiting hole is further provided on the upper housing; the duckbill valve is sealed and fixed in the duckbill valve limiting hole; the opening of the duckbill valve communicates with the duckbill valve limiting hole; when the upper housing is fixed to the bottom plate, the duckbill valve passes through the fixing hole.

[0011] The negative pressure connection assembly for a breast pump provided by the present utility model, preferably, a first internal thread and a second internal thread are provided on the inner wall of the side plate; the first internal thread is provided above the bottom plate; the second internal thread is provided below the bottom plate.

[0012] The present utility model provides a negative pressure connection assembly for a breast pump, which relates to the technical field of breast pumps and includes a tubular side plate, a bottom plate, an airbag, and a duckbill valve; the tube of the side plate extends vertically; the tube orifice above the side plate is a bell cover connection port; the tube orifice below the side plate is a milk bottle connection port; a communication port is opened at the side wall of the tube of the side plate; the bottom plate is sealed at the milk bottle connection port; the airbag is fixed above the bottom plate; the internal cavity of the airbag communicates with the communication port; a fixing hole is opened on the bottom plate; the fixing hole penetrates the bottom plate in the vertical direction; the duckbill valve is hermetically fixed in the fixing hole; the inlet opening direction of the duckbill valve is upward; the inlet of the duckbill valve faces the bell cover connection port; the outlet opening direction of the duckbill valve is downward. The negative pressure connection assembly for a breast pump provided by the present utility model solves the problem that the structure of the breast pump is large and it is inconvenient for the mother to cover the breast pump and the chest with clothes, and can reduce the structural volume of the breast pump, facilitating the mother to cover the breast pump and the chest with clothes, thereby better protecting privacy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, the present utility model and its features, shape, and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale, and the focus is on showing the gist of the present utility model.

[0014] Figure 1 FIG. 9 is a schematic diagram of the overall structure of the negative pressure connection assembly for a breast pump provided in Embodiment 1 of the present utility model.

[0015] Figure 2 FIG. 13 is an exploded structure diagram of the negative pressure connection assembly for a breast pump provided in Embodiment 1 of the present utility model.

[0016] Figure 3 FIG. 17 is an exploded structure diagram of the negative pressure connection assembly for a breast pump provided in Embodiment 1 of the present utility model after being fixedly combined with a breast pump bell cover 01 and a milk bottle 02.

[0017] Figure 4 FIG. 21 is a sectional structure diagram of the negative pressure connection assembly for a breast pump provided in Embodiment 1 of the present utility model after being fixedly combined with a breast pump bell cover 01 and a milk bottle 02. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Therefore, the detailed description of the embodiments of the present utility model provided in the following drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0019] Embodiment 1: When some mothers use breast pumps, out of privacy considerations, they will cover the breast pump with a top, thereby using the top to block the breast and the breast pump. However, the three-way structure of the breast pump in the prior art makes the horn cover, the negative pressure device, and the milk bottle of the breast pump in three different directions. When the breast pump is in use, the negative pressure device is on the opposite side of the horn cover. Therefore, the negative pressure device is far from the breast. When the mother wants to cover the breast and the breast pump with a top, due to the large distance between the breast and the farthest end in the horizontal direction of the breast pump (because the negative pressure device is fixed on the three-way structure, the negative pressure device is arranged in the direction away from the opening of the horn cover, the opening of the horn cover is in contact with the breast, so the negative pressure device is away from the opening of the horn cover and far from the breast), the space occupied by the breast pump in the horizontal direction between the clothes and the breast is large, resulting in a large distance between the top and the mother's breast, and thus it is easy for others to see the mother's breast from the mother's collar downwards, leading to the exposure of the mother's privacy. To solve this problem, the negative pressure connection component for a breast pump provided in Embodiment 1 of the present utility model is as Figures 1 to 4 shown, including a tubular side plate 1, a bottom plate 2, an airbag 3, and a duckbill valve 4; the tube of the side plate 1 extends vertically; the upper pipe orifice of the side plate 1 is a horn cover connection port 11; the lower pipe orifice of the side plate 1 is a milk bottle connection port 12; a communication port 13 is opened on the side wall of the tube of the side plate 1; the bottom plate 2 is sealed at the milk bottle connection port 12; an airbag 3 is fixed above the bottom plate 2; the internal cavity of the airbag 3 is communicated with the communication port 13; a fixing hole 21 is opened on the bottom plate 2; the fixing hole 21 penetrates the bottom plate vertically; the duckbill valve 4 is sealed and fixed in the fixing hole 31; the inlet opening direction of the duckbill valve 4 is upward; the inlet of the duckbill valve 4 faces the horn cover connection port 11; the outlet opening direction of the duckbill valve 4 is downward.

[0020] When the negative pressure connection component for a breast pump provided in Embodiment 1 of the present utility model is in use, it needs to be used in conjunction with a breast pump bell cover, a milk bottle, and an air pump in the prior art. The breast pump bell cover is used to lean against the mother's breast. Connect the small opening of the breast pump bell cover to the bell cover connection port 11, connect the mouth of the milk bottle to the milk bottle connection port 12, and connect the air pump to the connection port 13 through a pipeline. When the air pump operates, the airbag 3 connected to the connection port 13 deforms due to the change in the amount of gas in the internal cavity; when the mother uses the breast pump equipped with the negative pressure connection component provided in this embodiment to breastfeed, the mother's breast is closely attached to the inner wall of the bell cover, the mother's nipple faces the small opening of the bell cover, and the mother's breast, the inner wall of the bell cover, the side plate 1, and the bottom plate 2 form a sealed space. Only the outlet of the duckbill valve 4 in this sealed space is connected to the milk bottle. When the volume of the airbag 3 changes, the air pressure in this sealed space will change. Specifically, when the airbag 3 becomes smaller, since the amount of internal gas remains unchanged in this sealed space, but the volume becomes larger and the air density becomes lower, negative pressure will be generated. To maintain the air pressure balance between this space and the breast, this sealed space will generate suction on the mother's breast, so that the milk is secreted from the nipple into this space. The duckbill valve 4 is a common one-way valve. When a certain amount of milk accumulates in this sealed space, the gravity of the milk will cause the outlet of the duckbill valve 4 to open, and the milk will thus pass through the duckbill valve 4 and enter the milk bottle from the outlet of the duckbill valve. When the amount of milk is not enough to open the outlet of the duckbill valve 4, the outlet of the duckbill valve 4 will naturally close due to its own elastic deformation. By controlling the air pump to inhale periodically, the suction force generated on the breast periodically can be achieved, and milk extraction can be achieved in this way repeatedly; compared with the prior art, a special three-way component is required, and a negative pressure device is provided in the direction away from the bell cover of the three-way component. In this embodiment, a three-way component can also be used (the port of the three-way component originally connected to the negative pressure component needs to be sealed), and a negative pressure connection component is provided between the milk bottle and the three-way component. This can make the distance between the farthest end of the breast pump in the horizontal direction and the breast smaller, and the breast pump is thus easier to be blocked by clothes; at the same time, since the connection port 13 is provided on the side wall of the side plate 1, and the entire negative pressure connection component is provided between the bell cover and the milk bottle, therefore, in this embodiment, when the connection port 13 opened on the side plate 1 is connected to the air pump through a pipeline, the pipeline is not easily in direct contact with clothes. The existing negative pressure device is a structure protruding with an opening facing away from the bell cover, and the position of its connection port is on this protruding structure, and the protrusion protrudes towards the upper body direction. The pipeline connected to the air pump is easily affected by the upper body. Since the opening direction of the connection port 13 in this embodiment can also face the direction perpendicular to the opening direction of the bell cover, the arrangement position of the pipeline is between the upper body and the breast, and the pipeline is not easily in contact with the upper body to affect the on-off of the air path;The opening direction of the communication port 13 can also be the same as the opening direction of the horn cover, that is, the opening direction of the communication port 13 faces the mother's body. By extending the pipeline towards the breast direction and bending it downward, such an arrangement can make the pipeline pass through between the feeding bottle and the mother's body and under the breast (after the horn cover is fixed against the breast, since the breast protrudes on the chest, there is a gap between the breast pump and the mother's chest), so as to avoid the pipeline contacting the upper garment and the upper garment squeezing the pipeline to affect the on-off of the air path.;

[0021] The negative pressure connection component for a breast pump provided in Embodiment 1 of the present utility model solves the problem that the structure of the breast pump is large and it is inconvenient for the mother to cover the breast pump and the chest with clothes. It can reduce the structural volume of the breast pump, facilitate the mother to cover the breast pump and the chest with clothes, and thus better protect privacy.

[0022] As a preferred solution, in this embodiment, the airbag 3 includes a hood-shaped flexible film 31; a part of the edge of the flexible film 31 is hermetically attached and fixed to the upper surface of the bottom plate 2; the upper surface of the bottom plate 2, the inner hood-shaped surface of the flexible film 31 and the inner wall of part of the side plate 1 form a sealed space; the communication port 13 communicates with the sealed space. The volume change of the airbag 3 in this embodiment is realized by the deformation of the flexible film 31. The flexible film is a common structure in the field of breast pumps, which is flexible and easy to deform and recover. In this embodiment, when the air pump generates suction, the suction is provided to the sealed space through the pipeline from the communication port 13, so that the gas in the sealed space is sucked out. At this time, the flexible film 31 will deform because the gas in the sealed space becomes less, so as to realize the reduction of the volume of the airbag 3. After the air pump stops providing suction, the flexible film 31 restores its elastic deformation by itself, and the volume of the airbag 3 is restored.

[0023] Since the sealed space of the airbag 3 is communicated with the air pump, in order to avoid dust accumulation in the space affecting the normal operation of the negative pressure connection component, as a preferred solution, in this embodiment, it further includes an upper housing 5; a negative pressure hole 51 is provided in the vertical direction of the upper housing 5; the flexible film 31 is fixed on the upper housing 5; the flexible film 31 seals the upper opening of the negative pressure hole 51; the inner hood-shaped wall of the flexible film 31 faces the negative pressure hole 51; the upper housing 5 is detachably fixed on the bottom plate 2; a receiving groove 22 with an upper opening is provided on the bottom plate 2; when the upper housing 5 is fixed on the bottom plate 2, the lower opening of the negative pressure hole 51 is hermetically communicated with the upper opening of the receiving groove 22; the communication port 13 penetrates the side wall of the receiving groove 22; the communication port 13 communicates with the receiving groove 22 。 The flexible film 31 is fixed on the upper housing 5 ，The bottom plate 2 provides a receiving groove 22 for the deformation of the flexible film 31. The flexible film 31 deforms towards the inside of the receiving groove 22, causing the volume of the enclosed space surrounded by the receiving groove 22 and the flexible film 31 to change, thereby realizing the volume change of the airbag 3. The communication port 13 is provided on the side wall of the receiving groove 22 on the bottom plate. In this embodiment, the bottom plate is preferably made of a rigid material to avoid directly arranging the communication port 13 on the easily deformable flexible film 31, so that the communication port 13 deforms simultaneously when the flexible film 31 deforms, affecting the on-off of the air path.

[0024] In this embodiment, a duckbill valve limiting hole 52 is further provided on the upper housing 5; the duckbill valve 4 is sealed and fixed in the duckbill valve limiting hole 52; the opening of the duckbill valve 4 communicates with the duckbill valve limiting hole 52; when the upper housing 5 is fixed to the bottom plate 2, the duckbill valve 4 passes through the fixing hole 31. The duckbill valve 4 is fixed to the upper housing 5, and the fixing hole 21 is provided on the bottom plate 2. On the one hand, this facilitates the separation of the duckbill valve 4 from the bottom plate 2, thereby facilitating the cleaning of the duckbill valve 4. On the other hand, the upper housing 5 can be positioned at the fixing hole 21 through the duckbill valve 4, realizing the positioning during the detachable assembly of the upper housing 5 and the bottom plate 2, and facilitating the flexible film 31 to just cover the receiving groove 22. The specific structure of the duckbill valve 4 is prior art and will not be elaborated here.

[0025] As a preferred solution, in this embodiment, a first internal thread 14 and a second internal thread 15 are provided at the inner wall of the side plate 1; the first internal thread 14 is provided above the bottom plate 2; the second internal thread 15 is provided below the bottom plate 2. The device in this embodiment needs to be used in cooperation with a breast pump bell with an external thread and a baby bottle with an external thread. The external thread on the breast pump bell with an external thread matches the first internal thread 14, which facilitates the disassembly and assembly of the breast pump bell and the negative pressure connection component. The external thread of the baby bottle with an external thread is provided on the outer wall of the bottle mouth of the baby bottle and matches the second internal thread 15. After the mother finishes milk pumping, by grasping the negative pressure connection component and the baby bottle, the second internal thread 15 is separated from the second external thread of the bottle mouth of the baby bottle, so that the bottle mouth of the baby bottle is directly communicated with the outside, thereby taking the milk from the baby bottle; the first internal thread 14 and the second internal thread 15 facilitate the cooperative connection between the negative pressure connection component and the bell and the baby bottle, facilitating the mother to use the breast pump.

[0026] In summary, the present utility model provides a negative pressure connection component for a breast pump, which relates to the technical field of breast pumps and includes a tubular side plate, a bottom plate, an airbag, and a duckbill valve; the tube of the side plate extends vertically; the tube opening above the side plate is a bell cover connection port; the tube opening below the side plate is a milk bottle connection port; a communication port is provided at the side wall of the tube of the side plate; the bottom plate is sealed at the milk bottle connection port; the airbag is fixed above the bottom plate; the internal cavity of the airbag communicates with the communication port; a fixing hole is provided on the bottom plate; the fixing hole vertically penetrates the bottom plate; the duckbill valve is sealed and fixed in the fixing hole; the inlet opening direction of the duckbill valve is upward; the inlet of the duckbill valve faces the bell cover connection port; the outlet opening direction of the duckbill valve is downward. The negative pressure connection component for a breast pump provided by the present utility model solves the problem that the structure of the breast pump is large and it is inconvenient for the mother to cover the breast pump and the chest with clothes, and can reduce the structural volume of the breast pump, facilitating the mother to cover the breast pump and the chest with clothes, thereby better protecting privacy.

[0027] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A negative pressure connection assembly for a breast pump, characterized in that: Includes tubular side panels, bottom panel, air bag and duckbill valve; The tube of the side plate is extended in the vertical direction; the tube opening above the side plate is the speaker cover connection port; the tube opening below the side plate is the milk bottle connection port; a connecting port is opened at the side wall of the tube of the side plate; The bottom plate is sealed at the milk bottle connection port; the airbag is fixed above the bottom plate; the internal cavity of the airbag is connected to the connecting port; a fixing hole is opened on the bottom plate; the fixing hole vertically penetrates the bottom plate; the duckbill valve is sealed and fixed in the fixing hole; the inlet opening of the duckbill valve faces upward; the inlet of the duckbill valve faces the horn cover connection port; the outlet opening of the duckbill valve faces downward.

2. The negative pressure connection assembly for a breast pump according to claim 1, characterized in that: The airbag includes a flexible membrane in the shape of a hood; Part of the edge of the flexible membrane is tightly attached to the upper surface of the bottom plate and fixed; The upper surface of the bottom plate, the hood-shaped inner side surface of the flexible membrane and part of the inner wall of the side plate form a closed space; The communication port is in communication with the enclosed space.

3. The negative pressure connection assembly for a breast pump according to claim 2, characterized in that: It also includes an upper shell; the upper shell is provided with a negative pressure hole in a vertical direction; the flexible membrane is fixed on the upper shell; the flexible membrane seals the upper opening of the negative pressure hole; the cover-shaped inner wall of the flexible membrane faces the negative pressure hole; The upper shell can be detachably fixed to the bottom plate; The bottom plate is provided with a receiving groove with an upper opening; when the upper shell is fixed to the bottom plate, the lower opening of the negative pressure hole is tightly connected with the upper opening of the receiving groove; the connecting port passes through the side wall of the receiving groove; the connecting port is connected with the receiving groove.

4. The negative pressure connection assembly for a breast pump according to claim 3, characterized in that: The upper shell is also provided with a duckbill valve limiting hole; the duckbill valve is sealed and fixed in the duckbill valve limiting hole; the opening of the duckbill valve is connected to the duckbill valve limiting hole; When the upper shell is fixed to the bottom plate, the duckbill valve passes through the fixing hole.

5. The negative pressure connection assembly for a breast pump according to claim 1, characterized in that: The inner wall of the side plate is provided with a first internal thread and a second internal thread; The first internal thread is arranged above the bottom plate; and the second internal thread is arranged below the bottom plate.

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