CN212631316U

CN212631316U - Milk bowl and breast pump for breast pump

Info

Publication number: CN212631316U
Application number: CN202020868384.XU
Authority: CN
Inventors: 方国峰
Original assignee: Individual
Current assignee: Ningbo Youhe Maternal And Infant Products Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-03-02
Anticipated expiration: 2030-05-21

Abstract

The invention provides a milk bowl for a breast pump and the breast pump, and aims to solve the problems that components of the breast pump in the prior art are dispersed and occupy a large space. The milk bowl comprises a bowl body, a milk storage cavity and a tee joint are arranged in the bowl body, a milk outlet is formed in the front end of the milk storage cavity, and the tee joint is positioned in the milk storage cavity; the three ports of the tee joint are respectively a milk sucking port, a milk flowing port and a negative pressure port, the negative pressure port of the tee joint is integrated with the bowl body, and the negative pressure port of the tee joint is communicated with the outside. The breast pump comprises the milk bowl for the breast pump and a host; the host comprises a shell; the main machine is arranged in a space formed by the rear side of the semicircular mounting plate and the upper side of the upper panel of the bowl body, and the shell of the main machine and the bowl body form a hemispherical surface together. The tee joint and the bowl body are integrally arranged, so that the space is saved, the size is reduced, the integration degree is high, and the simple, efficient and low-cost scheme of the hidden type breast pump is realized.

Description

Milk bowl and breast pump for breast pump

Technical Field

The disclosure belongs to the technical field of breast pumps, and particularly relates to a milk bowl for a breast pump and the breast pump.

Background

A breast pump is an apparatus for expressing breast milk accumulated in a breast, and when an infant cannot directly suck the breast milk, the breast milk accumulated in the breast needs to be extracted by the breast pump. Along with the breakthrough of the technology and the continuous improvement of the lactation requirements of mothers, several built-in hidden electric breast pumps for sucking milk appear, but the components of the existing hidden breast pump testing components are dispersed, the process is complex, the cost of the breast pump is too high, the breast pump can not be popularized and used in a large area, or the occupied space is large, the breast pump is portable and inconvenient to install, and the mass production with low cost in batch is difficult to realize.

Disclosure of Invention

The invention provides a milk bowl for a breast pump and the breast pump, and aims to solve the problems that components of the breast pump in the prior art are dispersed and occupy a large space.

In order to solve the technical problem, the technical scheme adopted by the disclosure is as follows:

a milk bowl for a milk sucker comprises a bowl body, wherein a milk storage cavity and a tee joint are arranged in the bowl body, a milk outlet is formed in the front end of the milk storage cavity, and the tee joint is positioned in the milk storage cavity; the three interfaces of the tee joint are respectively a milk sucking interface, a milk flowing interface and a negative pressure interface, and the negative pressure interface of the tee joint and the bowl body are integrally arranged.

The further improved scheme is as follows: the milk bowl for the milk sucker also comprises a suction nozzle, the suction nozzle is in a horn shape with a large front part and a small back part, and the rear port of the suction nozzle is hermetically connected and communicated with the milk sucking interface of the tee joint; the front end of the suction nozzle is detachably connected with the front end of the bowl body, and the suction nozzle is sealed and plugged at the milk outlet of the milk storage cavity in a sealing manner.

In the present disclosure, the front end of the suction nozzle is detachably connected with the front end of the bowl body, and the suction nozzle is sealed and plugged at the milk outlet of the milk storage cavity in a sealing way. On one hand, the suction nozzle and the bowl body are integrated together, so that the space is saved, on the other hand, the suction nozzle can be used as an end cover of a milk outlet of the milk storage cavity besides the function of sucking milk, the milk can be conveniently taken out, parts are saved, the space is further optimized, and the integration degree is high; in addition, the size of the suction nozzle can be changed, and the universality is improved.

The further improved scheme is as follows: the bowl body consists of an upper panel at the upper part, an arc-shaped plate at the lower part and a rear end plate at the rear part; the front end of the bowl body is a semicircular milk outlet; a semicircular mounting plate extends upwards from the milk outlet; the edge of the semicircular mounting plate and the front edge of the arc-shaped plate form an annular edge together; the front end of the suction nozzle is detachably connected with the annular edge of the bowl body.

By adopting the structure, a space for installing the main machine is formed on the rear side of the semicircular installation plate and the upper side of the upper panel of the bowl body, so that the whole structure is more compact. In addition, the front end of the bowl body is a semicircular milk outlet, and the front end of the whole milk storage cavity is a milk outlet, so that the milk storage cavity is convenient to clean.

The further improved scheme is as follows: the tee joint is positioned at the joint of the upper panel and the rear end plate; the opening of the milk sucking interface is arranged forwards; the opening of the milk flowing interface is obliquely arranged downwards, horizontally arranged forwards or vertically arranged downwards; the opening of the negative pressure interface faces upwards and penetrates through the upper panel, the opening edge of the negative pressure interface is integrally arranged with the upper panel, the rear end face of the negative pressure interface is integrally arranged with the rear end plate, and the milk suction interface and the milk flowing interface are suspended in the milk storage cavity; the inside of the negative pressure interface is an air bag groove.

When the opening of the milk flowing interface is arranged obliquely downwards, the angle is the optimal angle; on one hand, no milk is accumulated in the milk flowing interface; on the other hand, when the duckbill valve is connected, the duckbill valve can be placed at a lower position, and cannot be collided by the inner wall of the milk storage cavity to deform after rotation; the duckbill valve can be placed at a lower position, and the depth of the air bag groove can be increased, so that the deformation space of the air bag is increased, and the suction force and the effect of sucking milk are improved; in addition, when the opening of the milk flowing port is arranged obliquely downwards, the cleaning dead angle can be avoided, and the cleaning is convenient.

The further improved scheme is as follows: the annular edge is turned outwards to form an annular convex edge, the edge of the front end of the suction nozzle is turned outwards to form an annular clamping groove with a U-shaped cross section, and the annular clamping groove is clamped on the annular convex edge in a sealing manner; the front surface of semi-circular mounting panel all is equipped with the suction nozzle lateral wall assorted groove of stepping down with the internal surface of bowl body top panel. The suction nozzle is made of elastic rubber; a gap is reserved between the suction nozzle and the inner wall of the bowl body.

The suction nozzle is made of elastic rubber, so that the user feels more comfortable when wearing the suction nozzle; a gap is reserved between the suction nozzle and the inner wall of the bowl body, a deformation space is reserved for the suction nozzle, and a user can have a certain adjusting space according to the shape of the breast; the front end edge of the suction nozzle is detachably and hermetically connected with the front end edge of the bowl body through the annular clamping groove and the annular convex edge, so that a milk outlet is conveniently opened, and breast milk is conveniently taken out.

The further improved scheme is as follows: and a one-way diaphragm valve is arranged at the milk flowing interface of the tee joint. The milk in the milk storage cavity can be prevented from splashing out of the milk flowing port due to shaking.

The further improved scheme is as follows: and a duckbill valve made of rubber is arranged on the milk flowing port of the tee joint. The milk in the milk storage cavity can be prevented from splashing out of the milk flowing port due to shaking.

On the other hand, the milk sucker comprises the milk bowl for the milk sucker and a host; the host comprises a shell; the main machine is arranged in a space formed by the rear side of the semicircular mounting plate and the upper side of the upper panel of the bowl body, and the shell of the main machine and the bowl body form a hemispherical surface together.

In the scheme, the main machine is arranged in a space formed by the rear side of the semicircular mounting plate and the upper side of the upper panel, and the shell of the main machine and the bowl body form a hemispherical surface together; on one hand, the position of the host machine enables the overall structure to be compact, saves space and is convenient to use; on the other hand, the shell of the main machine and the bowl body form a semi-spherical surface together, so that the main machine is convenient to wear when being used by a user, can be operated by a hand in one hand and can also be placed in a bra, and the concealment is good.

The further improved scheme is as follows: the main machine also comprises an L-shaped mounting seat consisting of a front panel and a bottom panel, the front panel of the mounting seat is attached to the semicircular mounting plate of the bowl body, and the bottom surface of the mounting seat is attached to the upper side of the upper panel of the bowl body; a mounting cavity is formed between the mounting seat and the shell, and a control main board, a power supply, a negative pressure device, an air escape valve and an air bag are arranged in the mounting cavity; the negative pressure interface is internally provided with an air bag groove, the upper end of the air bag is provided with an opening, the opening is outwards turned over and provided with a circle of oval clamping groove with a U-shaped cross section, and the oval clamping groove of the air bag opening is clamped at the upper end edge of the opening of the negative pressure interface; the lower surface of the mounting seat is provided with a pressing frame, a groove is arranged around the pressing frame, the pressing frame is inserted into the opening of the air bag in a sealing manner, and the upper end of the air bag is inserted into the groove in a sealing manner; the air pipe of the air escape valve and the air pipe of the negative pressure device both penetrate through the pressure frame and are communicated with the inner part of the air bag; the power supply, the negative pressure device and the air escape valve are all connected with a control mainboard, and an operation key assembly positioned on the upper surface of the shell is arranged on the control mainboard; the air release valve and the negative pressure device are communicated with an air bag through an air pipe, and the air bag is positioned in the negative pressure joint and seals the opening of the negative pressure joint; and reinforcing ribs are arranged on the inner side wall of the air bag.

The main board is controlled to control the negative pressure device and the air release valve to work, so that the air bag is controlled to be vacuumized or enter air; when breast milk needs to be extracted, the suction nozzle is buckled on the breast, the air bag is vacuumized, the air bag is in a flat state, and the size is reduced, so that negative pressure is generated between the suction nozzle and the breast to absorb the breast milk; when getting into gas in the gasbag, the gasbag recovers under self elasticity and atmospheric pressure effect, sets up the strengthening rib, and the recovering effect of gasbag is better.

The pressing frame not only fixes the air bag in the air bag groove, but also seals the air bag; meanwhile, the main machine is positioned and limited front, back, left and right, and the pressing frame is tightly inserted into the opening of the air bag, so that the main machine and the milking device are fixed, and the assembly and disassembly are convenient.

The further improved scheme is as follows: the operation key assembly comprises a starting switch key, an enhancing key and a weakening key; the power supply is a lithium battery, and a power interface is connected to the lithium battery.

The beneficial effect of this disclosure does:

compared with the conventional tee joint and the bowl body which are assembled together, the tee joint is simpler in structure, saves space, reduces volume and realizes a simple, efficient and low-cost scheme of the hidden type breast pump; in addition, the assembly and disassembly are convenient, the structure is more compact, the gap generated by assembly is reduced, bacteria breeding is avoided, and the cleaning is convenient. The negative pressure device is communicated through the negative pressure interface, the suction nozzle can suck milk through negative pressure, and the sucked milk flows into the milk storage cavity through the milk flowing interface, so that the structure is compact, the integration degree is high, and the use is convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present disclosure and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings may be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a bowl according to one of the aspects of the present disclosure.

FIG. 2 is a schematic cross-sectional view of one of the bowl bodies of the present disclosure.

FIG. 3 is a schematic diagram of a bowl body according to a second perspective of the present disclosure.

Fig. 4 is a schematic structural view of another bowl body in the present disclosure.

FIG. 5 is a schematic view of a nozzle configuration according to the present disclosure.

FIG. 6 is a cross-sectional structural schematic view of a mouthpiece of the present disclosure.

Fig. 7 is a schematic view of the bowl of the present disclosure after the mouthpiece and bladder are installed.

Figure 8 is a schematic structural view of one of the duckbill valves of the present disclosure.

Figure 9 is a schematic cross-sectional view of the bowl body of the present disclosure when a one-way diaphragm valve is used in place of the duckbill valve.

Fig. 10 is a schematic view of a first perspective of a breast pump according to the present disclosure.

Fig. 11 is a schematic view of a second perspective of a breast pump according to the present disclosure.

Fig. 12 is an exploded view of a breast pump according to the present disclosure.

Fig. 13 is a schematic view of a breast pump of the present disclosure with the outer casing removed.

FIG. 14 is a schematic view of the construction of the bladder of the present disclosure.

Fig. 15 is a schematic structural diagram of a host in the present disclosure.

The reference numbers in the figures illustrate:

1-a bowl body; 11-a milk storage cavity; 12-a semicircular mounting plate; 13-annular convex edge; 14-upper panel; 15-arc-shaped plates; 16-a rear end plate; 17-a relief groove; 2-a suction nozzle; 21-a ring-shaped card slot; 3-air bag; 31-oval slot; 4-a duckbill valve; 51-a milk suction interface; 52-negative pressure interface; 521-a fixture block; 53-milk flow interface; 6-a host; 61-a housing; 62-a key assembly; 63-a charging interface; 64-air nozzle; 65-a power supply; 66-a negative pressure device; 67-control the mainboard; 68-a release valve; 71-pressing the frame; 72-a trench; 8-mounting seat.

Detailed Description

The technical solution in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without inventive step, are within the scope of the disclosure.

The first embodiment is as follows:

referring to fig. 1 and 2, a milk bowl for a milk sucker comprises a bowl body 1, wherein a milk storage cavity 11 and a tee joint are arranged in the bowl body 1, a milk outlet is arranged at the front end of the milk storage cavity 11, and the tee joint is positioned in the milk storage cavity 11; the three ports of the tee joint are respectively a milk sucking port 51, a milk flowing port 53 and a negative pressure port 52, and the negative pressure port 52 of the tee joint is integrated with the bowl body.

On the basis of the above scheme, referring to fig. 1 to 7, on the basis of the above scheme, the milk sucking device further comprises a suction nozzle 2, the suction nozzle 2 is in a horn shape with a large front part and a small back part, and a rear port of the suction nozzle 2 is hermetically connected and communicated with a milk sucking interface 51 of a tee joint, specifically, in a manner that: the suction nozzle 2 is made of rubber, and the rear port of the suction nozzle 2 is tightly sleeved on the milk suction interface 51 of the tee joint; the front end of the suction nozzle 2 is detachably connected with the annular edge of the bowl body, and the suction nozzle 2 is sealed and plugged at the milk outlet of the milk storage cavity 11 in a sealing way.

Wherein, the front end of the suction nozzle 2 is detachably connected with the front end of the bowl body, and the suction nozzle is sealed and plugged at the milk outlet of the milk storage cavity in a sealing way.

With reference to fig. 2 and 3 and the drawings, on the basis of the above solution, as one of the possible structures, the bowl body is composed of an upper panel 14 at the upper part, an arc panel 15 at the lower part and a rear panel 16 at the rear part; in order to improve the wearing comfort, the lower arc-shaped plate 15 and the rear end plate 16 adopt smooth transition; the front end of the bowl body is a semicircular milk outlet; a semicircular mounting plate 12 extends upwards from the milk outlet; the edge of the semicircular mounting plate 12 and the front edge of the arc-shaped plate 15 form an annular edge together; the front end of the suction nozzle 2 is detachably connected with the annular edge of the bowl body 1. Wherein, the upper panel 14 is preferably a flat plate; the rear end plate 16 may be a flat plate, or may be a convex plate which forms 1/4 spherical surface together with the arc plate 15.

Referring to fig. 1 to 3, on the basis of the above solution, the tee is located at the connection position of the upper panel 14 and the rear end plate 16; the opening of the milk suction port 51 is arranged forward; the opening of the milk flow port 53 is arranged obliquely downwards (as shown in fig. 1 to 3), horizontally forwards (not shown) or vertically downwards (as shown in fig. 4); the opening of the negative pressure interface 52 faces upwards and penetrates through the upper panel 14, the opening edge of the negative pressure interface 52 is integrally arranged with the upper panel 14, the rear end face of the negative pressure interface 52 is integrally arranged with the rear end plate 16, and the milk suction interface 51 and the milk flowing interface 53 are suspended in the milk storage cavity 11; the interior of the negative pressure port 52 is an air bag groove. In order to improve the firmness of the air bag connection, a latch 521 may be arranged on the outer side wall of the opening of the negative pressure port 52.

Referring to fig. 3, 6 and 7, on the basis of the above scheme, the front end of the suction nozzle 2 is detachably connected with the annular edge of the bowl body 1, specifically: the annular edge is outwards turned to form an annular convex edge 13, the edge of the front end of the suction nozzle 2 is outwards turned to form an annular clamping groove 21 with a U-shaped cross section, and the annular clamping groove 21 is hermetically clamped on the annular convex edge 13; the front surface of the semicircular mounting plate 12 and the inner surface of the bowl upper panel 14 are provided with abdicating grooves 17 matched with the outer side walls of the suction nozzles 2.

On the basis of the scheme, the suction nozzle 2 is made of elastic rubber; a gap is reserved between the suction nozzle 2 and the inner wall of the bowl body; the edge of the front end of the suction nozzle 2 is outwards folded into an annular clamping groove 21 with a U-shaped cross section, an annular convex edge 13 is arranged on the edge of the front end of the bowl body, and the annular clamping groove 21 is clamped on the annular convex edge 13 in a sealing mode.

Referring to fig. 8, on the basis of the above scheme, a rubber duckbill valve 4 is arranged on the milk flowing port of the tee joint. Specifically, as one of the modes: referring to fig. 1, 2 and 8, the milk flowing port 53 of the tee is an opening arranged in front of the bottom of the air bag tank, the upper end of the duckbill valve 4 is a circular tube clamped on the milk flowing port 53, and the top end of the circular tube is provided with a clamping groove 41 clamped on the milk flowing port 53; the lower part is a flat tube with gradually reduced cross section; the opening of the duckbill valve 4 is disposed obliquely forward. Alternatively, referring to fig. 4, the milk flow port 53 is a conduit, the duckbill valve 4 has a circular upper end sleeved on the milk flow port 53 and a flat lower end with a gradually decreasing cross-section. In a negative pressure state, the air pressure in the tee joint is lower than the air pressure in the milk storage cavity 11, so the duckbill valve 4 is in a closed state; in the non-negative pressure state, duckbill valve 4 allows milk to flow into milk storage chamber 11.

Referring to fig. 9, besides the duckbill valve 4, a one-way diaphragm valve may be disposed at the milk flowing port of the tee joint 53; as a possible but not limited to specific structure: the one-way diaphragm valve is composed of a rubber diaphragm 9 and an insert block 91 arranged on the rubber diaphragm 9, the milk flowing port 53 is provided with a jack tightly matched with the insert block 91, and the milk flowing port 53 is provided with a rubber diaphragm support frame. In a negative pressure state, the air pressure in the tee joint is lower than the air pressure in the milk storage cavity 11, so that the rubber diaphragm 9 is attached and blocks the milk flowing port; under the non-negative pressure state, the rubber diaphragm 9 is pressed open under the gravity action of the breast milk, so that the breast milk can flow into the milk storage cavity 11.

Example two:

referring to fig. 2, 10, 11 and 12, a breast pump comprises a milk bowl for a breast pump according to the first embodiment and a main unit 6; the host 6 includes a housing 61; the main body 6 is arranged in a space formed by the rear side of the semicircular mounting plate 12 and the upper side of the upper panel 14 of the bowl body, and the shell 61 of the main body 6 and the bowl body form a semicircular surface together.

Referring to fig. 2, 10 to 15, based on the above solution, the main frame 6 further includes an L-shaped mounting seat 8 formed by a front panel and a bottom panel, the front panel of the mounting seat 8 is attached to the semicircular mounting plate 12 of the bowl body, and the bottom of the mounting seat 8 is attached to the upper side of the upper panel 14 of the bowl body.

Referring to fig. 1 to 15, a mounting cavity is formed between the mounting base 8 and the housing 61, and a control main board 67, a power supply 65, a negative pressure device 66, an air release valve 68 and the air bag 3 are arranged in the mounting cavity; the air bag 33 is a U-shaped groove and the upper end is open; an opening is formed in the upper end of the air bag 3, a circle of oval clamping groove 31 with a U-shaped cross section is outwards turned over from the opening, and the oval clamping groove 31 formed in the opening of the air bag 3 is clamped at the upper end edge of the opening of the negative pressure connector 52; a pressing frame 71 is arranged on the lower surface of the mounting seat 8, a groove 72 is arranged around the pressing frame 71, the pressing frame 71 is hermetically inserted into the opening of the air bag 3, and the upper end of the air bag 3 is hermetically inserted into the groove 72; the air pipe of the air release valve 68 and the air pipe of the negative pressure device 66 are communicated with the inner part of the air bag 3 through the pressing frame 71; the power supply 65, the negative pressure device 66 and the air release valve 68 are all connected with a control main board 67, and the control main board 67 is provided with an operation key assembly 62 positioned on the upper surface of the shell 61. The control main board 67 is the same as the conventional electric breast pump control main board 67, and is not described in detail here.

The release valve 68 and the negative pressure device 66 are both communicated with the air bag 3 through an air pipe, the air bag 3 is positioned in the negative pressure interface 52, and the opening of the negative pressure interface 52 is sealed.

And reinforcing ribs are arranged on the inner side wall of the air bag 3.

Referring to fig. 13, on the basis of the above solution, the operation key assembly 62 includes, but is not limited to, a start switch key, an enhance key, and a weaken key, which can be set accordingly according to actual requirements.

Wherein, power 65 can be for dry battery group, lithium cell etc. as one of them preferred scheme, the battery is the lithium cell, and the lithium cell is connected with the interface 63 that charges that is used for charging through the charging wire, and the power 65 interface sets up on the shell 61 of host computer 6.

The negative pressure device 66 is not limited to one, and any existing device capable of pumping out the gas in the airbag 3 is within the protection scope of the present disclosure, and the existing device itself is adopted, and no improvement point is provided, and detailed description is omitted here; the internal relief valve 68 is used for filling air into the airbag 3 when the airbag 3 is in a negative pressure state and needs to be restored.

The disclosure is further illustrated below in conjunction with the working principle:

referring to fig. 1 to 15, a user aligns the suction nozzle 2 with the breast, turns on the start switch button, and then the negative pressure device 66 starts to vacuumize the air bag 3, and the degree of vacuumization can be adjusted by the strengthening key and the weakening key, so as to adjust the suction force of the suction nozzle 2 on the breast; the sucked breast milk enters the milk flowing port through the milk sucking port 51, the duckbill valve 4 is in a tight closing state under the action of negative pressure, and then the negative pressure disappears after the air bag 3 enters gas through the air escape valve 68, and the breast milk flows into the milk storage cavity 11 along the duckbill valve 4; repeating the steps, taking down the suction nozzle 2 from the milk bowl after the breast milk is drawn, opening the milk outlet, pouring out the breast milk, and cleaning the suction nozzle 2 and the bowl body of the milk bowl; as the whole front end surface of the milk storage cavity 11 is provided with the milk outlet which is larger, the milk storage cavity 11 is convenient to clean.

The present disclosure is not limited to the above alternative embodiments, and any other various forms of products may be obtained by anyone in the light of the present disclosure, but any changes in shape or structure thereof fall within the scope of the present disclosure, which is defined by the claims of the present disclosure.

Claims

1. A milk bowl for a milk sucker is characterized in that: comprises a bowl body, wherein a milk storage cavity and a tee joint are arranged in the bowl body, the front end of the milk storage cavity is provided with a milk outlet, and the tee joint is positioned in the milk storage cavity; the three interfaces of the tee joint are respectively a milk sucking interface, a milk flowing interface and a negative pressure interface, and the negative pressure interface of the tee joint and the bowl body are integrally arranged.

2. A teat cup for a breast pump according to claim 1, wherein: the suction nozzle is in a horn shape with a large front part and a small back part, and the back port of the suction nozzle is hermetically connected and communicated with the milk suction interface of the tee joint; the front end of the suction nozzle is detachably connected with the front end of the bowl body, and the suction nozzle is sealed and plugged at the milk outlet of the milk storage cavity in a sealing manner.

3. A teat cup for a breast pump according to claim 2, wherein: the bowl body consists of an upper panel at the upper part, an arc-shaped plate at the lower part and a rear end plate at the rear part; the front end of the bowl body is a semicircular milk outlet; a semicircular mounting plate extends upwards from the milk outlet; the edge of the semicircular mounting plate and the front edge of the arc-shaped plate form an annular edge together; the front end of the suction nozzle is detachably connected with the annular edge of the bowl body.

4. A teat cup for a breast pump according to claim 3, wherein: the tee joint is positioned at the joint of the upper panel and the rear end plate; the opening of the milk sucking interface is arranged forwards; the opening of the milk flowing interface is obliquely arranged downwards, horizontally arranged forwards or vertically arranged downwards; the opening of the negative pressure interface faces upwards and penetrates through the upper panel, the opening edge of the negative pressure interface is integrally arranged with the upper panel, the rear end face of the negative pressure interface is integrally arranged with the rear end plate, and the milk suction interface and the milk flowing interface are suspended in the milk storage cavity; the inside of the negative pressure interface is an air bag groove.

5. A teat cup for a breast pump according to claim 3, wherein: the annular edge is turned outwards to form an annular convex edge, the edge of the front end of the suction nozzle is turned outwards to form an annular clamping groove with a U-shaped cross section, and the annular clamping groove is clamped on the annular convex edge in a sealing manner; the front surface of the semicircular mounting plate and the inner surface of the upper panel of the bowl body are provided with abdicating grooves matched with the outer side walls of the suction nozzles;

the suction nozzle is made of elastic rubber; a gap is reserved between the suction nozzle and the inner wall of the bowl body.

6. A teat cup for a breast pump according to claim 1, wherein: and a one-way diaphragm valve is arranged at the milk flowing interface of the tee joint.

7. A teat cup for a breast pump according to claim 1, wherein: and a duckbill valve made of rubber is arranged on the milk flowing port of the tee joint.

8. A breast pump characterized by: comprising a teat cup for a breast pump according to any of claims 3 to 6 and a main machine; the host comprises a shell; the main machine is arranged in a space formed by the rear side of the semicircular mounting plate and the upper side of the upper panel of the bowl body, and the shell of the main machine and the bowl body form a hemispherical surface together.

9. The breast pump as set forth in claim 8 wherein: the main machine also comprises an L-shaped mounting seat consisting of a front panel and a bottom panel, the front panel of the mounting seat is attached to the semicircular mounting plate of the bowl body, and the bottom surface of the mounting seat is attached to the upper side of the upper panel of the bowl body;

a mounting cavity is formed between the mounting seat and the shell, and a control main board, a power supply, a negative pressure device, an air escape valve and an air bag are arranged in the mounting cavity; the upper end of the air bag is provided with an opening, the opening is outwards turned with a circle of oval clamping groove with a U-shaped cross section, and the oval clamping groove of the air bag opening is clamped on the upper end edge of the opening of the negative pressure connector; the lower surface of the mounting seat is provided with a pressing frame, a groove is arranged around the pressing frame, the pressing frame is inserted into the opening of the air bag in a sealing manner, and the upper end of the air bag is inserted into the groove in a sealing manner; the air pipe of the air escape valve and the air pipe of the negative pressure device both penetrate through the pressure frame and are communicated with the inner part of the air bag;

the power supply, the negative pressure device and the air escape valve are all connected with a control mainboard, and an operation key assembly positioned on the upper surface of the shell is arranged on the control mainboard;

the air release valve and the negative pressure device are communicated with an air bag through an air pipe, and the air bag is positioned in the negative pressure joint and seals the opening of the negative pressure joint;

and reinforcing ribs are arranged on the inner side wall of the air bag.

10. A breast pump as set forth in claim 9 wherein: the operation key assembly comprises a starting switch key, an enhancing key and a weakening key; the power supply is a lithium battery, and a power interface is connected to the lithium battery.