Breast pump
By arranging the inner diameter of the first breast-sucking chamber of the breast shield in the breast pump to be smaller than the inner diameter of the second breast-sucking chamber of the flange bracket, the problem of milk backflow and overflow in the breast pump is solved, and more efficient milk collection and Better user experience.
Patent Information
- Application Number
- CN202420472840.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-03-12
AI Technical Summary
Existing breast pumps can easily cause milk to flow back into the breast pump and overflow from the gap between the breast pump and the breast, affecting the milk collection effect and user experience.
A breast pump is designed. By setting the inner diameter of the first breast-sucking chamber of the breast-sucking shield to be smaller than the inner diameter of the second breast-sucking chamber of the flange bracket, milk can be prevented from flowing back and overflowing, and the milk collection effect can be improved.
It effectively prevents milk from flowing back and overflowing, improves the effect of milk collection, and improves user experience.
Smart Images
Figure CN222368100U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of maternal and infant products, in particular to a breast pump. Background Art
[0002] A breast pump is a tool used to express breast milk accumulated in the mammary glands. It is generally used when the baby is unable to suck breast milk directly, or when the mother leaves the baby but still wants to breastfeed.
[0003] However, when the existing breast pump is used to suck milk, due to improper operation, the milk may easily flow back from the milk collecting bottle into the breast pump and overflow from the gap between the breast pump and the breast. Utility Model Content
[0004] The main purpose of the utility model is to provide a breast pump, which aims to effectively prevent milk from flowing back and overflowing after milk passes through the first milk suction cavity and enters the second milk suction cavity by setting the inner diameter of the first milk suction cavity of the breast shield to be smaller than the inner diameter of the second milk suction cavity of the flange bracket, thereby improving the effect of milk collection and improving the user experience.
[0005] In order to achieve the above object, the utility model provides a breast pump, which comprises:
[0006] A first shell, wherein a mounting cavity having a first mounting opening and a second mounting opening is formed in the first shell, and the first mounting opening and the second mounting opening are spaced apart from each other on the outer peripheral wall of the first shell;
[0007] A milk suction assembly, the milk suction assembly comprising a breast shield, a flange bracket and a suction diaphragm, the breast shield is detachably mounted on the first mounting opening and at least partially extends into the mounting cavity, the flange bracket is mounted on a side of the breast shield extending into the mounting cavity, the suction diaphragm is mounted on a side of the flange bracket away from the breast shield, a first milk suction cavity is formed in the breast shield, a second milk suction cavity communicating with the first milk suction cavity is formed in the flange bracket, and an inner diameter of the first milk suction cavity at one end close to the second milk suction cavity is smaller than an inner diameter of the second milk suction cavity;
[0008] a milk collecting bottle, which is detachably mounted on the outer peripheral wall of the second mounting opening and is communicated with the second milk suction cavity, and is used for storing milk;
[0009] A negative pressure component is installed on the first shell, and is used to apply negative pressure to the suction diaphragm so that milk is sucked into the milk collecting bottle through the first milk suction cavity and the second milk suction cavity in sequence.
[0010] In an optional embodiment, the breast shield comprises an inner ring and an outer ring connected to each other, and the outer ring is used to fit the breast;
[0011] One end of the flange bracket is mounted on the outer peripheral wall of the inner ring, and the suction diaphragm is mounted on the other end of the flange bracket;
[0012] The inner diameter of the inner ring is smaller than the inner diameter of the second milk suction cavity.
[0013] In an optional embodiment, an anti-backflow groove is provided on the outer peripheral wall of the inner ring.
[0014] In an optional embodiment, the suction diaphragm is detachably sealed or self-sealed on the flange bracket, so that when the negative pressure component is activated, the suction diaphragm is deformed to drive the inside of the breast shield to generate negative pressure.
[0015] In an optional embodiment, the flange bracket is provided with a milk outlet on a side close to the milk collecting bottle, and the milk outlet is connected to the second mounting port to connect the second milk suction cavity to the milk collecting bottle.
[0016] In an optional embodiment, the breast pump further comprises a one-way valve, and the one-way valve is detachably mounted on the second mounting port.
[0017] In an optional embodiment, the breast shield is made of flexible material or hard rubber;
[0018] And / or, the flange bracket is made of a rigid material;
[0019] And / or, the suction membrane is made of flexible material.
[0020] In an optional embodiment, the breast pump also includes a second shell, a accommodating cavity is formed in the second shell, the second shell cover is arranged on the outer peripheral wall of the first shell, the outer peripheral wall of the first shell is provided with a first joint, the outer peripheral wall of the second shell is provided with a second joint, the second joint cover is arranged on the first joint, and the negative pressure assembly is installed in the accommodating cavity and is connected to the first joint.
[0021] In an optional embodiment, the negative pressure component includes a negative pressure pump, a solenoid valve and an air pipe. The negative pressure pump is installed in the accommodating cavity, one end of the air pipe is connected to the negative pressure pump, and the other end of the air pipe is connected to the second joint. The solenoid valve is arranged on the air pipe for opening or closing the air pipe.
[0022] In an optional embodiment, the breast pump further comprises a power supply component, wherein the power supply component is disposed in the accommodating cavity and spaced apart from the negative pressure pump, and the power supply component is electrically connected to the negative pressure pump.
[0023] The breast pump of the utility model technical solution comprises a first shell, a milk suction assembly, a milk collecting bottle and a negative pressure assembly, wherein a mounting cavity having a first mounting opening and a second mounting opening is formed in the first shell, and the first mounting opening and the second mounting opening are arranged at intervals on the outer peripheral wall of the first shell; the milk suction assembly comprises a breast shield, a flange bracket and a suction diaphragm, the breast shield is detachably mounted on the first mounting opening and at least partially extends into the mounting cavity, the flange bracket is mounted on a side of the breast shield extending into the mounting cavity, the suction diaphragm is mounted on a side of the flange bracket away from the breast shield, a first milk suction cavity is formed in the breast shield, a second milk suction cavity connected to the first milk suction cavity is formed in the flange bracket, and the first milk suction cavity is formed in the The inner diameter of the cavity at one end close to the second milk suction cavity is smaller than the inner diameter of the flange bracket, so that after the milk passes through the first milk suction cavity and enters the second milk suction cavity, the milk can be effectively prevented from flowing back and overflowing, thereby improving the effect of milk collection and improving the user experience; the milk collecting bottle can be detachably mounted on the outer peripheral wall of the second mounting port and is connected to the second milk suction cavity; the negative pressure component is mounted on the first shell, and the negative pressure component is used to apply negative pressure to the suction diaphragm, so that the milk passes through the first milk suction cavity and the second milk suction cavity in turn and is sucked into the milk collecting bottle, thereby realizing smooth milk suction of the milk suction bottle, and allowing the milk to smoothly enter the milk collecting bottle, and it is not easy to have the problem of milk overflowing from the breast shield. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0025] Figure 1 This is a schematic structural diagram of an embodiment of the breast pump of the utility model;
[0026] Figure 2 for Figure 1 a cross-sectional view of the breast pump shown;
[0027] Figure 3 for Figure 1 A partial structural schematic diagram of a breast pump shown;
[0028] Figure 4 for Figure 3 A schematic diagram of the installation structure of the first shell, the milk collecting bottle and the milk suction assembly in the breast pump is shown.
[0029] Description of Figure Numbers:
[0030]
[0031]
[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0035] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0037] The utility model proposes a breast pump, which aims to effectively prevent milk from flowing back and overflowing after milk passes through the first milk suction cavity and enters the second milk suction cavity by setting the inner diameter of the first milk suction cavity of the breast shield to be smaller than the inner diameter of the second milk suction cavity of the flange bracket, thereby improving the effect of milk collection and improving the user experience.
[0038] Please refer to Figures 1 to 4The specific structure of the breast pump 10 proposed by the utility model will be described in a specific embodiment below. In one embodiment of the utility model, the breast pump 10 includes:
[0039] A first housing 1, wherein a mounting cavity 11 having a first mounting opening 12 and a second mounting opening 13 is formed in the first housing 1, wherein the first mounting opening 12 and the second mounting opening 13 are spaced apart from each other on the outer peripheral wall of the first housing 1;
[0040] A milk suction assembly 2, the milk suction assembly 2 comprising a breast shield 21, a flange bracket 22 and a suction diaphragm 23, the breast shield 21 being detachably mounted on the first mounting opening 12 and at least partially extending into the mounting cavity 11, the flange bracket 22 being mounted on a side of the breast shield 21 located at the mounting cavity 11, the suction diaphragm 23 being mounted on a side of the flange bracket 22 away from the breast shield 21, a first milk suction cavity 211 being formed in the breast shield 21, a second milk suction cavity 221 being connected to the first milk suction cavity 211 being formed in the flange bracket 22, the inner diameter of the first milk suction cavity 211 at one end close to the second milk suction cavity 221 being smaller than the inner diameter of the second milk suction cavity 221;
[0041] a milk collecting bottle 3, which is detachably mounted on the outer peripheral wall of the second mounting opening 13 and communicates with the second milk suction cavity 221, and is used for storing milk;
[0042] A negative pressure component 4 is installed on the first shell 1, and is used to apply negative pressure to the suction diaphragm 23 so that milk is sucked into the milk collecting bottle 3 through the first milk suction cavity 211 and the second milk suction cavity 221 in sequence.
[0043] In this embodiment, the breast pump 10 includes a first shell 1, a milk suction assembly 2 and a negative pressure assembly 4, and a mounting cavity 11 having a first mounting port 12 and a second mounting port 13 is formed in the first shell 1, wherein the milk suction assembly 2 includes a breast shield 21, a flange bracket 22 and a suction diaphragm 23, and the breast shield 21 is detachably mounted on the first mounting port 12, so that the connection and disassembly of the breast shield 21 and the first shell 1 are more convenient and trouble-free, thereby improving the convenience of using the breast pump 10, and the breast shield 21 at least partially extends into the mounting cavity 11 on the side away from the breast. It should be noted that the breast shield 21 is used to fit the user's breast, and therefore, the breast shield 21 is in the shape of a funnel or a hemispherical shape that can fit the breast. Furthermore, the flange bracket 22 is mounted on the side of the breast shield 21 extending into the mounting cavity 11. It should be noted that the breast shield 21 and the flange bracket 22 can be formed into one piece by a nesting process to improve the sealing of the connection between the two, thereby effectively preventing milk from flowing out from the connection between the two. The suction diaphragm 23 is mounted on the side of the flange bracket 22 away from the breast shield 21. It should be noted that the flange bracket 22 plays a supporting role, and the suction diaphragm 23 is detachably sealed or self-sealed on the flange bracket 22, so that when the negative pressure component 4 is activated, the suction diaphragm 23 is deformed to drive the inside of the breast shield 21 to generate negative pressure.
[0044] Specifically, a first breast suction chamber 211 is formed in the breast shield 21, and a second breast suction chamber 221 connected to the first breast suction chamber 211 is formed in the flange bracket 22. It should be noted that the first breast suction chamber 211 and the second breast suction chamber 221 both have two openings, wherein one opening of the first breast suction chamber 211 can be adsorbed on the user's breast, the other opening of the first breast suction chamber 211 is connected to an opening of the second breast suction chamber 221, and the other opening of the second breast suction chamber 221 is connected to the mounting chamber 11, and the suction diaphragm 23 is detachably sealed or self-sealed on the other opening of the second breast suction chamber 221, so that a sealed negative pressure space is formed between the suction diaphragm 23 and the breast shield 21, and then under the pressure of the negative pressure component 4, the breast shield 21 is deformed to massage the breast, thereby achieving the effect of milk suction. At the same time, the breast pump 10 also includes a milk collecting bottle 3, which is detachably mounted on the outer peripheral wall of the second mounting port 13 and communicates with the second milk suction cavity 221, so that the sucked milk can enter the milk collecting bottle 3 through the first milk suction cavity 211 and the second milk suction cavity 221 to achieve temporary storage of the milk. It should be noted that the milk collecting bottle 3 is detachably mounted on the second mounting port 13, so that the milk collecting bottle 3 can be removed from the housing at any time for separate storage and cleaning, which is convenient for use.
[0045] Furthermore, in order to prevent the milk that has entered the second breast suction chamber 221 from flowing back, the inner diameter of the first breast suction chamber 211 at one end close to the second breast suction chamber 221 is smaller than the inner diameter of the second breast suction chamber 221. As a result, when the milk enters the second breast suction chamber 221, since the inner diameter of the first breast suction chamber 211 at one end close to the second breast suction chamber 221 is smaller than the inner diameter of the second breast suction chamber 221, the milk is not easy to overflow from the second breast suction chamber 221 to the first breast suction chamber 211. The milk can smoothly pass through the second breast suction chamber 221 into the milk collecting bottle 3, thereby effectively avoiding milk overflow and improving the user experience.
[0046] Please refer to Figure 2 In an optional embodiment, the breast shield 21 includes an inner ring 212 and an outer ring 213 connected to each other, and the outer ring 213 is used to fit the breast;
[0047] One end of the flange bracket 22 is mounted on the outer peripheral wall of the inner ring 212, and the suction diaphragm 23 is mounted on the other end of the flange bracket 22;
[0048] The inner diameter of the inner ring 212 is smaller than the inner diameter of the second milk suction cavity 221 .
[0049] In this embodiment, in order to facilitate the fitting of the breast shield 21 to the breast, the breast shield 21 includes an inner ring 212 and an outer ring 213 connected to each other, wherein the first breast suction cavity 211 is formed in the inner ring 212 and the outer ring 213, and the outer ring 213 is used to fit the breast. It should be noted that the outer edge of the outer ring 213 is an arc-shaped edge, which can effectively prevent the sharp edge from cutting or scratching the breast. In addition, the outer ring 213 is trumpet-shaped, so that the outer ring 213 can better fit the breast and form a closed space between the first breast suction cavity 211 and the breast. In addition, one end of the flange bracket 22 is mounted on the outer peripheral wall of the inner ring 212. It should be further noted that the inner diameter of the inner ring 212 is smaller than the inner diameter of the second breast suction cavity 221.
[0050] Specifically, in order to facilitate the connection between the flange bracket 22 and the breast shield 21, a plug-in groove 2122 may be provided on the outer peripheral wall of the inner ring 212, and the plug-in groove 2122 has a certain depth, so that one end of the flange bracket 22 can be stably plugged into the plug-in groove 2122, and the flange bracket 22 and the breast shield 21 are formed into one body through a sleeve molding process (secondary injection molding process), so that milk can be effectively prevented from leaking out from the connection between the flange bracket 22 and the breast shield 21. It should be noted that the shape of the flange bracket 22 can be cylindrical, and of course it can also be other shapes, which is not limited in this application.
[0051] Please refer to Figure 2In an optional embodiment, an anti-backflow groove 2121 is provided on the outer peripheral wall of the inner ring 212. Such a configuration can further effectively prevent milk from flowing back and overflowing. It should be noted that the anti-backflow groove 2121 has a certain depth. Since the shape of the flange bracket 22 can be cylindrical, the anti-backflow groove 2121 is an annular groove.
[0052] Please refer to Figure 2 In an optional embodiment, the suction diaphragm 23 is detachably sealed or self-sealed and is arranged on the flange bracket 22, so that when the negative pressure component 4 is activated, the suction diaphragm 23 is deformed to drive the inside of the breast shield 21 to generate negative pressure.
[0053] In this embodiment, the suction diaphragm 23 is detachably sealed or self-sealed on the side of the flange bracket 22 away from the inner ring 212. The negative pressure component 4 applies negative pressure to the suction diaphragm 23, thereby indirectly applying negative pressure to the breast shield 21, thereby preventing milk from being sucked back into the pump component, thereby preventing milk contamination, circuit damage, and other problems. In addition, the suction diaphragm 23 can be removed from the flange bracket 22, thereby facilitating subsequent cleaning.
[0054] Please refer to Figure 2 In an optional embodiment, the flange bracket 22 is provided with a milk outlet 222 on a side close to the milk collecting bottle 3, and the milk outlet 222 is connected to the second mounting port 13 to connect the second milk suction cavity 221 to the milk collecting bottle 3, thereby realizing the connection between the second milk suction cavity 221 and the milk collecting bottle 3, so that milk can smoothly enter the milk collecting bottle 3 from the second milk suction cavity 221.
[0055] Please refer to Figure 2 In an optional embodiment, the breast pump 10 further includes a one-way valve 5, which is detachably mounted on the second mounting port 13. The one-way valve 5 connects the second milk suction chamber 221 and the milk collecting bottle 3, and effectively prevents milk from flowing back from the milk collecting bottle 3 to the second milk suction chamber 221, and guides milk from the second milk suction chamber 221 to flow into the milk collecting bottle 3 in one direction, thereby effectively preventing milk from flowing back from the milk collecting bottle 3 to the second milk suction chamber 221, thereby improving the efficiency of breast milk collection. It should be noted that the one-way valve 5 is detachably mounted on the second mounting port 13, and such a configuration facilitates the removal of the one-way valve 5 from the second mounting port 13 for subsequent cleaning or replacement.
[0056] Please refer to Figures 1 to 4 , in an optional embodiment, the breast shield 21 is made of a flexible material;
[0057] and / or, the flange bracket 22 is made of a rigid material or hard rubber;
[0058] And / or, the suction membrane 23 is made of flexible material.
[0059] In this embodiment, the breast shield 21 contacts the human body. In order to improve the user experience, it is necessary to use a flexible material that is harmless to the human body and does not cause allergies, such as silicone, rubber, etc., which can better fit the user's breast and is comfortable for the user to use, or other materials. At the same time, in order to achieve better deformation, the suction diaphragm 23 is also a flexible material, such as silicone, rubber, etc., so that when the negative pressure component 4 applies pressure to it, it can also smoothly apply pressure to the breast shield 21. At the same time, the flange bracket 22 plays a supporting role, so that a sealed negative pressure space is formed between the suction diaphragm 23 and the breast shield 21, so that the breast shield 21 can better massage the breast under the action of the suction diaphragm 23, and improve the efficiency of milk extraction. Therefore, the flange bracket 22 is a rigid material or hard glue, such as plastic, which is not easy to deform.
[0060] Please refer to Figures 1 to 4 In an optional embodiment, the breast pump 10 further includes a second shell 6, a receiving chamber 61 is formed in the second shell 6, and the second shell 6 is covered on the outer peripheral wall of the first shell 1, so as to stably place the negative pressure assembly 4 and other components in the receiving chamber 61, and protect the negative pressure assembly 4 and other components from being easily damaged by the outside world, the outer peripheral wall of the first shell 1 is provided with a first joint 14, the outer peripheral wall of the second shell 6 is provided with a second joint 62, the second joint 62 is covered on the first joint 14, the negative pressure assembly 4 is installed in the receiving chamber 61, and is connected to the first joint 14, and the negative pressure assembly 4 and other components can be stably arranged in the receiving chamber 61 through the second shell 6. It should be noted that both the first shell 1 and the second shell 6 can be made of hard plastic or light metal, which is not further limited here.
[0061] Please refer to Figure 3 In an optional embodiment, the negative pressure component 4 includes a negative pressure pump 41, a solenoid valve 42 and an air pipe. The negative pressure pump 41 is installed in the accommodating cavity 61, one end of the air pipe is connected to the negative pressure pump 41, and the other end of the air pipe is connected to the second joint 62. The solenoid valve 42 is arranged on the air pipe and is used to open or close the air pipe. The negative pressure pump 41 can apply negative pressure to the breast shield 21 through the air pipe. The solenoid valve 42 is arranged on the air pipe. By controlling the switch of the solenoid valve 42, whether the negative pressure pump 41 applies negative pressure to the breast shield 21 is controlled, that is, whether the breast pump 10 is controlled to suck milk from the user's breast.
[0062] In one embodiment of the present application, the negative pressure pump 41 is one or more of a diaphragm pump, a piezoelectric pump, a hydraulic pump or a mechanical pump.
[0063] Please refer to Figure 3 In an optional embodiment, the breast pump 10 further includes a power supply unit 7, which is disposed in the accommodating cavity 61 and spaced apart from the negative pressure pump 41. The power supply unit 7 is electrically connected to the negative pressure pump 41 for supplying power to the negative pressure pump 41. It should be noted that the negative pressure pump 41 may use a rechargeable battery, a storage battery or a power cord, etc., which is not further limited herein, as long as it can supply power to the negative pressure pump 41 to meet functional requirements.
[0064] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A breast pump, characterized in that: The breast pump comprises: A first shell, wherein a mounting cavity having a first mounting opening and a second mounting opening is formed in the first shell, and the first mounting opening and the second mounting opening are spaced apart from each other on the outer peripheral wall of the first shell; A milk suction assembly, the milk suction assembly comprising a breast shield, a flange bracket and a suction diaphragm, the breast shield is detachably mounted on the first mounting opening and at least partially extends into the mounting cavity, the flange bracket is mounted on a side of the breast shield extending into the mounting cavity, the suction diaphragm is mounted on a side of the flange bracket away from the breast shield, a first milk suction cavity is formed in the breast shield, a second milk suction cavity communicating with the first milk suction cavity is formed in the flange bracket, and an inner diameter of the first milk suction cavity at one end close to the second milk suction cavity is smaller than an inner diameter of the second milk suction cavity; a milk collecting bottle, which is detachably mounted on the outer peripheral wall of the second mounting opening and is communicated with the second milk suction cavity, and is used for storing milk; A negative pressure component is installed on the first shell, and is used to apply negative pressure to the suction diaphragm so that milk is sucked into the milk collecting bottle through the first milk suction cavity and the second milk suction cavity in sequence.
2. The breast pump according to claim 1, characterized in that The breast shield comprises an inner ring and an outer ring connected to each other, wherein the outer ring is used to fit the breast; One end of the flange bracket is mounted on the outer peripheral wall of the inner ring, and the suction diaphragm is mounted on the other end of the flange bracket; The inner diameter of the inner ring is smaller than the inner diameter of the second milk suction cavity.
3. The breast pump according to claim 2, characterized in that The outer peripheral wall of the inner ring is provided with a backflow prevention groove.
4. The breast pump according to claim 2, characterized in that: The suction diaphragm is detachably sealed or self-sealed and is arranged on the flange bracket, so that when the negative pressure component is activated, the suction diaphragm is deformed to drive the inside of the breast shield to generate negative pressure.
5. The breast pump according to any one of claims 2 to 4, characterized in that: The flange bracket is provided with a milk outlet on a side close to the milk collecting bottle, and the milk outlet is connected to the second mounting port to connect the second milk suction cavity to the milk collecting bottle.
6. The breast pump according to claim 5, characterized in that The breast pump further comprises a one-way valve, and the one-way valve is detachably mounted on the second mounting port.
7. A breast pump according to any one of claims 1 to 4, characterized in that: The breast shield is made of flexible material or hard rubber; And / or, the flange bracket is made of rigid material; And / or, the suction membrane is made of flexible material.
8. The breast pump according to any one of claims 1 to 4, characterized in that: The breast pump also includes a second shell, a accommodating cavity is formed in the second shell, the second shell cover is arranged on the outer peripheral wall of the first shell, the outer peripheral wall of the first shell is provided with a first joint, the outer peripheral wall of the second shell is provided with a second joint, the second joint cover is arranged on the first joint, and the negative pressure component is installed in the accommodating cavity and is connected to the first joint.
9. The breast pump according to claim 8, characterized in that The negative pressure component includes a negative pressure pump, a solenoid valve and an air pipe. The negative pressure pump is installed in the accommodating cavity. One end of the air pipe is connected to the negative pressure pump, and the other end of the air pipe is connected to the second joint. The solenoid valve is arranged on the air pipe and is used to open or close the air pipe.
10. The breast pump according to claim 9, characterized in that The breast pump further comprises a power supply component, which is arranged in the accommodating cavity and spaced apart from the negative pressure pump, and the power supply component is electrically connected to the negative pressure pump.