CN219167267U - Breast pump - Google Patents

Abstract

The utility model discloses a breast pump, which comprises a shield, a base and a milk bottle which are sequentially arranged from top to bottom, wherein the rear end of the shield is provided with a negative pressure cavity, the inside of the base is hollow, the rear end of the shield is movably connected with a shield assembly port on the front side of the base, the shield comprises a rigid body and a flexible flange, the rigid body comprises a funnel with a horn shape at the front end and a connecting pipe at the rear end, the funnel is gradually widened away from the connecting pipe, the forefront end is provided with the flange, the upper end and the lower end of the connecting pipe are respectively communicated with a containing cavity and a milk outlet, and the milk outlet is communicated with the milk bottle through the base; the negative pressure cavity comprises an elastic air bag and a one-way valve, the elastic air bag is arranged in the accommodating cavity, and the one-way valve is positioned on the milk outlet; under the suction state, the elastic air bag contracts and deforms under the suction effect, the one-way valve blocks the milk outlet, a negative pressure cavity is formed in the accommodating cavity, the connecting pipe and the funnel, and breast milk is sucked into the funnel and the connecting pipe; in the suction-free state, the pressure in the negative pressure cavity is released, the elastic air bag rebounds, the one-way valve is opened, and breast milk flows into the feeding bottle from the milk outlet.

Description

Breast pump

Technical Field

The utility model belongs to the technical field of mother and infant products, and particularly relates to a breast pump.

Background

Breast pumps refer to means for expressing breast milk that accumulates in the breast. The infant milk bottle is mainly suitable for the situation that the infant can not directly suck the breast milk or the nipple of the mother can not directly feed the milk, but breast feeding is still expected. The breast pump is mainly of an electric type and a manual type.

The traditional breast pump mainly comprises a main machine, a shield, a feeding bottle, a check valve and other parts, wherein a three-way part is mainly used for connecting an air bag, the shield and the feeding bottle, a pipeline is used for sucking the air bag to form negative pressure in the shield, and sucked breast milk enters the feeding bottle from the shield through the three-way part. After the breast pump is used each time, all parts are required to be disassembled and cleaned, all the disassembled parts are independent and are scattered, and small parts such as the one-way valve and the like are easy to lose, so that the breast pump cannot be used, and the user experience is greatly influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the breast pump, which utilizes the cooperation of a shield and a base, is provided with the elastic air bag and the one-way valve in a hidden way, is quick to open and close, and is convenient and quick to disassemble, assemble and clean.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the breast pump comprises a shield, a base and a milk bottle which are sequentially arranged from top to bottom, wherein the rear end of the shield is provided with a negative pressure cavity, the inside of the base is hollow, the rear end of the shield is movably connected with a shield assembly port on the front side of the base, the shield comprises a rigid body and a flexible flange, the rigid body comprises a funnel with a horn shape at the front end and a connecting pipe at the rear end, the funnel is gradually widened away from the connecting pipe, the foremost end is provided with the flange, the upper end and the lower end of the connecting pipe are respectively communicated with a containing cavity and a milk outlet, and the milk outlet is communicated with the milk bottle through the base;

the negative pressure cavity comprises an elastic air bag and a one-way valve, the elastic air bag is arranged in the accommodating cavity, and the one-way valve is positioned on the milk outlet; under the suction state, the elastic air bag contracts and deforms under the suction effect, the one-way valve blocks the milk outlet, a negative pressure cavity is formed in the accommodating cavity, the connecting pipe and the funnel, and breast milk is sucked into the funnel and the connecting pipe; in the suction-free state, the pressure in the negative pressure cavity is released, the elastic air bag rebounds, the one-way valve is opened, and breast milk flows into the feeding bottle from the milk outlet.

Further, in the negative pressure cavity, an opening is formed at the rear end of the elastic air bag, a cavity is formed at the front end of the elastic air bag, a flanging is formed at the opening, a clamping groove is formed between the flanging and the outer surface of the cavity, and when the elastic air bag is arranged in the accommodating cavity, the periphery of the mounting opening at the rear end of the accommodating cavity is embedded into the clamping groove; the one-way valve is connected with the lower end of the opening through the side wall, and the one-way valve and the cavity face towards the same side.

Further, the elastic air bag, the side wall and the one-way valve are integrally formed.

Further, the one-way valve is a flexible sheet; or the inner surface of the elastic air bag is provided with a plurality of reinforcing ribs in a ring way.

Further, a through hole A is formed in the upper end of the connecting pipe and communicated with the accommodating cavity.

Further, the end of the flange forms a first abutment surface and the end of the funnel forms a second abutment surface, the first and second abutment surfaces meeting in a circumferential seam and the first abutment surface semi-surrounding the second abutment surface.

Still further, the flange has a first wall thickness at the seam, the funnel has a second wall thickness at the seam, the flange has a third wall thickness away from the seam, and the first wall thickness is greater than the second wall thickness; or the first wall thickness is greater than the third wall thickness; or the third wall thickness is greater than the first wall thickness.

Further, the opening angle R1 of the funnel is equal to the opening angle R2 of the flange.

Further, the movable connection between the rear end of the shield and the base is specifically: the upper end of the shield assembly port of the base is provided with an installation notch with the port width of D1, the upper surface of the accommodating cavity at the rear end of the shield is provided with a rotating shaft with the diameter of D2, D1 is smaller than D2, and the rotating shaft is embedded into the installation notch.

Further, an elastic poking piece extending towards the inside of the base is arranged at the lower end of the shield assembly opening of the base, and a buckle A is arranged on the surface of the elastic poking piece; the connecting pipe at the rear end of the protective cover is provided with a groove, the end part at one side of the groove is provided with a buckle B, and the buckle A is embedded into the groove and is abutted against the buckle B.

By adopting the technical scheme of the utility model, the beneficial effects of the utility model are as follows: the integrated elastic air bag and the one-way valve are hidden in the shield, no tiny parts exist, the disassembly and the cleaning process are not easy to lose, and the disassembly and the assembly are rapid; the part of the shield provided with the negative pressure cavity is hidden and arranged in the shield assembly opening of the base, so that the exposure is avoided, the rotating shaft is turned over, opened and closed, and the use is convenient and reliable; the rotating shaft is assembled by adopting the mounting notch with the opening part width smaller than the diameter of the rotating shaft, so that the rotating shaft is prevented from falling off in the using process, and the assembly is firmer; the whole product is simple in structure and convenient to use, and the use experience of a user is effectively improved.

Drawings

FIG. 1 is a perspective view of a breast pump in a closed position;

FIG. 2 is a perspective view of the breast pump in an expanded state;

FIG. 3 is a cross-sectional view of the breast pump;

FIG. 4 is a schematic illustration of the assembly of the base and the shield;

FIG. 5 is a schematic view of the breast pump in a disassembled state;

FIG. 6a is an angled perspective view of the negative pressure chamber;

FIG. 6b is a perspective view of the negative pressure chamber at another angle;

FIG. 6c is a cross-sectional view of the negative pressure chamber;

FIG. 7a is an angled perspective view of the shield;

FIG. 7b is an angled perspective view of the shield;

FIG. 7c is a cross-sectional view of the shield;

FIG. 7d is a schematic view of the flange connection to the funnel;

FIG. 8a is a schematic cross-sectional view of the shroud and base closed;

FIG. 8b is a schematic cross-sectional view of the shroud and base in an expanded state.

In the figure: 1 shield, 2 negative pressure cavity, 3 base, 4 feeding bottle, 5 air inlet, 6 shield assembly mouth, 7 milk outlet, 8 through hole A,9 funnel, 10 connecting tube, 11 flange, 12 mounting mouth, 13 holding cavity, 14 elastic air bag, 15 check valve, 16 seam, 17 opening, 18 cavity, 19 turnup, 20 draw-in groove, 21 lateral wall, 22 extension, 23 strengthening rib, 24 first face that leans against, 25 second face that leans against, 26 first wall thickness, 27 second wall thickness, 28 third wall thickness, 29 pivot, 30 installation breach, 31 elastic plectrum, 32 buckle A,33 recess, 34 plane.

Detailed Description

The technical scheme of the utility model is further described and illustrated by the following specific examples so as to make the utility model more clear and obvious. Other advantages and effects of the present utility model will be readily apparent to those skilled in the art from the present disclosure. The utility model is capable of other and different embodiments and its several details are capable of modification and variation in various respects, all without departing from the spirit of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

As shown in fig. 1-8b, the embodiment relates to a breast pump, which comprises a shield 1, a negative pressure cavity 2, a base 3 and a milk bottle 4, wherein the negative pressure cavity 2 is arranged at the rear end of the shield 1, the base 3 and the milk bottle 4 are sequentially arranged from top to bottom, the rear end of the negative pressure cavity 2 is connected with an air inlet 5 at the rear end of the base 3, the base 3 is hollow, and the rear end of the shield 1 is movably connected with a shield assembly opening 6 at the front side of the base 3.

The shield comprises a rigid body and a flexible flange 11, wherein the rigid body comprises a funnel 9 with a horn-shaped front end and a connecting tube 10 at the rear end, the funnel 9 with the horn shape is used for accommodating and fitting breasts, the connecting tube 10 is connected with the funnel 9, the tail part of the connecting tube 10 is semi-open, namely, a milk outlet 7 is formed in the lower side of the tail part, the upper part of the connecting tube 10 is provided with a containing cavity 13, the funnel 9 is gradually widened away from the connecting tube 10, the foremost end is provided with the flange 11, the upper end and the lower end of the connecting tube 10 are respectively communicated with the containing cavity 13 and the milk outlet 7, and the milk outlet 7 is positioned in the base 3 and is communicated with the milk bottle 4. When in installation, the negative pressure cavity 2 is placed in the accommodating cavity 13 at the upper part of the shield 1. The flange can be made of materials such as silica gel, and the rigid body is made of materials such as plastics.

The negative pressure cavity 3 comprises an elastic air bag 14 and a one-way valve 15, the elastic air bag 14 can shrink and deform under the action of prestress, and the elastic air bag can rebound after being released. The elastic air bag 4 is arranged in the accommodating cavity 13, and the one-way valve 15 is positioned on the milk outlet 7. In the suction state, the elastic air bag 4 contracts and deforms under the suction effect, the one-way valve 15 blocks the milk outlet 7, a negative pressure cavity is formed in the accommodating cavity 13, the connecting pipe 10 and the funnel 9, and breast milk is sucked into the funnel and the connecting pipe; in the suction-free state, the pressure in the negative pressure cavity is released, the elastic air bag 14 rebounds, the one-way valve 15 is opened, and breast milk flows into the feeding bottle 4 from the milk outlet 7.

In the negative pressure cavity 2, the elastic air bag 14 adopts a structure that an opening 17 is arranged at the rear end and a cavity 18 is formed at the front end, the opening 17 is provided with an outward flange 19, a clamping groove 20 is formed between the outward flange 19 and the outer surface of the cavity 18, and when the elastic air bag 14 is arranged in the accommodating cavity 13, the periphery of the mounting opening 12 at the rear end of the accommodating cavity 13 is embedded into the clamping groove 20; the one-way valve 15 is connected with the lower end of the opening 17 through a side wall 21, and the one-way valve and the chamber are both oriented towards the same side.

In this embodiment, the elastic air bag 14, the side wall 21 and the check valve 15 are integrally formed, and an integral design is adopted, so that additional assembly is not needed, and the situation that the split of small components such as the check valve 15 is easy to fall is avoided. The fixing device can be directly clamped on the shield 1, and is more convenient and faster to assemble with the shield 1. The elastic balloon 14 has a front side wall thickness greater than a rear side wall thickness, the rear side being the side closer to the opening 17. The side wall 21 is designed to be perpendicular to the bottom surface of the elastic air bag 14, the one-way valve 15 is obliquely arranged on one side of the side wall 21, and the elastic air bag 14 is preferably rectangular.

In a specific embodiment, the one-way valve 15 is a flexible sheet; the inner surface of the elastic air bag 14 is provided with a plurality of reinforcing ribs 23 in a ring shape, and the reinforcing ribs 23 are in a strip shape, and the length of each reinforcing rib is arranged along the opening 17 towards the inner side of the elastic air bag 14.

The upper end of the connecting pipe 10 is provided with a through hole A8 which is communicated with the accommodating cavity 13, and the through hole A8 is used for connecting the air flow communication of the connecting pipe and the accommodating cavity.

The end of the flange 11 forms a first abutment surface 24 and the end of the funnel forms a second abutment surface 25, the first abutment surface 24 and the second abutment surface 25 meeting in a circumferential seam 16 and the first abutment surface 24 semi-surrounding the second abutment surface 25, i.e. the surface where the two meet is not a single plane, as shown in the figure, i.e. the second abutment surface comprises the outermost side and part of the outer surface of the funnel, the first abutment surface being in contact with the outer side and part of the outer surface.

The flange 11 has a first wall thickness 26 at the joint 16, the funnel 9 has a second wall thickness 27 at the joint 16, the flange 11 has a third wall thickness 28 facing away from the joint 16, the first wall thickness 26 being greater than the second wall thickness 27; or the first wall thickness 26 is greater than the third wall thickness 28; or the third wall thickness 28 is greater than the first wall thickness 27.

The opening angle R1 of the funnel 9 is equal to the opening angle R2 of the flange 11.

The upper portion of guard shield 1 has a pivot 29, and the lower part has a buckle B34, and the pivot 29 of guard shield buckles into the installation breach 30 on base 3 upper portion, rotates to buckle A32 and base 3 on buckle B34 support mutually, has realized guard shield 1 rear end top and the swing joint of base 3, and a specific embodiment is: the upper end of the shield assembly port 6 of the base 3 is provided with an installation notch 30 with the port width of D1, the upper surface of the accommodating cavity 12 at the rear end of the shield 1 is provided with a rotating shaft 29 with the diameter of D2, D1 is smaller than D2, the rotating shaft 29 is embedded into the installation notch 30, the lower end of the installation notch 30 is circular, the port size D1 is reduced to be smaller than the diameter of the rotating shaft D2, the rotating shaft is limited, and the rotating shaft is prevented from being separated in the rotating process.

The rotary shaft 29 and the shield 1 of the present embodiment are formed as a fixed unit, and are not required to be disassembled and assembled, so that the problem that small parts of the rotary shaft are easy to be lost is avoided.

In order to facilitate assembly, two symmetrical parts of the rotating shaft are cut along the axial direction to form two symmetrical planes 34, and the distance D3 between the two symmetrical planes is smaller than D1, so that the rotating shaft can be conveniently and loosely placed in the mounting notch 30 during first assembly. As shown in fig. 8b, the shaft is placed into the mounting notch along the notch of the shaft, and the shield is rotated to be closed with the base 3.

An elastic poking plate 31 extending towards the inside of the base 3 is arranged at the lower end of the shield assembly opening 6 of the base 3, and a buckle A32 is arranged on the surface of the elastic poking plate 31; the adapter tube 10 at the rear end of the shield 1 is provided with a groove 33, the end part at one side of the groove 33 is provided with a buckle B34, and the buckle A32 is embedded into the groove 33 to be abutted against the buckle B34.

In one embodiment, the resilient tab 31 is an arcuate tab having a bend angle α of less than or equal to 90 °. The buckle a32 is provided on the upper surface of the elastic pulling piece 31 on the side where it is connected to the base 3.

In a preferred embodiment, the opening angle R1 of the funnel 9 is equal to the opening angle R2 of the flange 11. The end of the flange 1 facing away from the funnel 9 extends in a direction facing away from the centre line to form an extension 22, the extension 22 transitioning with a rounded corner r between the inner wall of the flange 1.

The bottom of the base 3 and the mouth of the milk bottle 4 are respectively provided with mutually matched threads, the milk bottle 4 can be screwed on the bottom of the assembled base 3, and the milk bottle 4 can also be other liquid storage containers such as a milk storage bag. When the breast shield is in operation and use, the shield 1 is attached to the breast, the air hole at the tail part of the shield is connected with an air pump or an air cylinder and the like, and the whole assembly forms a closed cavity. When suction force acts, the elastic air bag contracts and deforms, and the side wall of the one-way valve is tightly attached to the milk outlet at the tail part of the connecting pipe, so that a sealed negative pressure cavity is formed, and breast milk is sucked out. When the pressure is released, the elastic air bag rebounds, and breast milk flows into the feeding bottle from the milk outlet. The product has the advantages of small number of parts, simple and convenient installation, great reduction of cost and improvement of the use experience of users.

It should be noted that the illustrations provided in the above embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings rather than the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.

The foregoing description is only of the preferred embodiments of the utility model and the technical principles employed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present utility model has been described in more detail by way of the above embodiments. The utility model is capable of other and equivalent embodiments and its several details are intended to be within the scope of the present disclosure.

Claims (10)

1. The breast pump comprises a shield, a base and a milk bottle which are sequentially arranged from top to bottom, wherein the rear end of the shield is provided with a negative pressure cavity, the breast pump is characterized in that the inside of the base is hollow, the rear end of the shield is movably connected with a shield assembly port on the front side of the base, the shield comprises a rigid body and a flexible flange, the rigid body comprises a funnel with a horn-shaped front end and a connecting pipe at the rear end, the funnel is gradually widened away from the connecting pipe, the foremost end is provided with the flange, the upper end and the lower end of the connecting pipe are respectively communicated with a containing cavity and a milk outlet, and the milk outlet is communicated with the milk bottle through the base;

the negative pressure cavity comprises an elastic air bag and a one-way valve, the elastic air bag is arranged in the accommodating cavity, and the one-way valve is positioned on the milk outlet;

under the suction state, the elastic air bag contracts and deforms under the suction effect, the one-way valve blocks the milk outlet, a negative pressure cavity is formed in the accommodating cavity, the connecting pipe and the funnel, and breast milk is sucked into the funnel and the connecting pipe;

in the suction-free state, the pressure in the negative pressure cavity is released, the elastic air bag rebounds, the one-way valve is opened, and breast milk flows into the feeding bottle from the milk outlet.

2. The breast pump of claim 1, wherein in the negative pressure chamber, an opening is arranged at the rear end of the elastic air bag, a cavity is formed at the front end of the elastic air bag, a turned-out edge is arranged at the opening, a clamping groove is formed between the turned-out edge and the outer surface of the cavity, and when the elastic air bag is installed in the accommodating chamber, the periphery of the mounting opening at the rear end of the accommodating chamber is embedded into the clamping groove;

the one-way valve is connected with the lower end of the opening through the side wall, and the one-way valve and the cavity face towards the same side.

3. The breast pump of claim 2, wherein the resilient bladder, sidewall, and one-way valve are integrally formed.

4. A breast pump according to any of claims 1 to 3, wherein said one-way valve is a flexible sheet; or the inner surface of the elastic air bag is provided with a plurality of reinforcing ribs in a ring way.

5. The breast pump of claim 1, wherein the upper end of the nipple is provided with a through hole a communicating with the receiving chamber.

6. The breast pump of claim 1, wherein an end of the flange forms a first abutment surface and an end of the funnel forms a second abutment surface, the first and second abutment surfaces meeting in a circumferential seam and the first abutment surface semi-surrounding the second abutment surface.

7. The breast pump of claim 6, wherein said flange has a first wall thickness at the seam and said funnel has a second wall thickness at the seam,

the flange has a third wall thickness away from the joint, the first wall thickness being greater than the second wall thickness; or the first wall thickness is greater than the third wall thickness; or the third wall thickness is greater than the first wall thickness.

8. Breast pump according to claim 1, wherein the opening angle R1 of the funnel is equal to the opening angle R2 of the flange.

9. The breast pump of claim 1, wherein the movable connection between the rear end of the shield and the base is specifically:

the upper end of the shield assembly port of the base is provided with an installation notch with the port width of D1, the upper surface of the accommodating cavity at the rear end of the shield is provided with a rotating shaft with the diameter of D2, D1 is smaller than D2, and the rotating shaft is embedded into the installation notch.

10. The breast pump of claim 1, wherein the lower end of the shield assembly opening of the base is provided with an elastic poking piece extending towards the inside of the base, and the surface of the elastic poking piece is provided with a buckle A;

the connecting pipe at the rear end of the protective cover is provided with a groove, the end part at one side of the groove is provided with a buckle B, and the buckle A is embedded into the groove and is abutted against the buckle B.

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