A breast pump

By integrating the bra, milk suction channel, milk cover and one-way valve into an integrated structure and combining it with a sealing structure, the problems of existing breast pumps such as many parts, large size and poor sealing are solved, and the breast pump is miniaturized, portable and efficient.

CN119488649BActive Publication Date: 2025-09-30GUANGDONG YOUMENG ELECTRICAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202411863594.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2025-09-30
Estimated Expiration
2044-12-17

AI Technical Summary

Technical Problem

Existing breast pumps have many parts, are complex to assemble, are large in size, inconvenient to carry and transport, and have poor sealing, resulting in low working efficiency.

Method used

A breast pump is designed, which adopts a front shell and a rear shell structure, and is equipped with an electric air pump assembly and an integrated bra unit. The bra, milk suction channel, milk cover and one-way valve are molded as one piece, combined with a sealing structure to form an air pressure chamber. The milk storage container is detachable and connected, the rocker switch is small in size, the whole machine has few parts, and is easy to assemble.

Benefits of technology

The breast pump has fewer parts, simple assembly, small size and good sealing, which improves work efficiency, is convenient to carry and transport, and the milk storage container can be used for multiple functions, saving budget.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a breast pump, comprising a front shell and a rear shell, an electric air pump assembly being disposed between the front shell and the rear shell, the front shell being provided with a switch assembly connected to the electric air pump assembly; the rear shell being sealedly connected to an integrated brassiere unit via a sealing structure, forming an air pressure chamber between the integrated brassiere unit and the rear shell, the integrated brassiere unit comprising a brassiere, a milk suction channel communicating with the brassiere, and a milk cap disposed at the lower end of the milk suction channel, the milk suction channel being provided with a deformable structure, and the milk cap being provided with a one-way valve; the brassiere, the milk suction channel, the deformable structure, the milk cap, and the one-way valve being an integrally formed structure; the brassiere, the milk suction channel, and the milk cap being connected to form the milk suction channel, and a milk storage container being detachably and sealably connected to the lower portion of the milk cap. The brassiere, the milk suction channel, the deformable structure, the milk cap, and the one-way valve of the breast pump provided by the present invention are an integrally formed structure, resulting in a breast pump having fewer parts, simple assembly, low manufacturing cost, a reasonable structural design, a small size, and convenient portability and transportation.
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Description

Technical field

[0001] The present invention relates to the field of maternal and infant products, in particular to a breast pump. [Background Technology]

[0002] With the accelerating pace of modern life, more and more working women are choosing to continue working after childbirth. To meet the nutritional needs of infants while ensuring mothers' productivity, various types of breast pumps have emerged on the market. However, existing breast pumps suffer from the following drawbacks: 1. They have numerous parts and assembly steps, resulting in long manufacturing times and high costs; 2. Their structural design is irrational, resulting in bulk and inconvenience in portability and transportation; 3. Their internal seal is poor, resulting in low efficiency. [Summary of the invention]

[0003] The object of the present invention is to overcome the deficiencies of the prior art and to provide a breast pump with fewer parts, simple assembly, small size, convenient portability and transportation, and good sealing performance.

[0004] The object of the present invention is achieved like this:

[0005] A breast pump comprises a front shell and a rear shell, an electric air pump assembly is provided between the front shell and the rear shell, and the front shell is provided with a switch assembly connected to the electric air pump assembly; the characterised in that the rear shell is sealed with an integrated bra unit via a sealing structure, an air pressure chamber is formed between the integrated bra unit and the rear shell, the integrated bra unit comprises a bra, a milk suction channel connected to the bra, a milk cover arranged at the lower end of the milk suction channel, the milk suction channel is provided with a deformation structure, and the milk cover is provided with a one-way valve; the bra, milk suction channel, deformation structure, milk cover and one-way valve are an integrally formed structure; the bra, milk suction channel and milk cover are connected to form a milk suction channel, and the lower part of the milk cover is detachably and sealably connected to a milk storage container.

[0006] The breast pump as described above is characterized in that the rear shell is provided with a accommodating cavity protruding toward the front shell, the integrated bra unit extends into the accommodating cavity, the rear side of the accommodating cavity is provided with a rear opening, the lower part of the accommodating cavity is provided with a lower opening, and the accommodating cavity is sealed by a sealing structure to form an air pressure cavity.

[0007] The breast pump as described above is characterized in that the sealing structure includes a rear sealing ring provided at the rear opening of the accommodating chamber, a front sealing groove cooperating with the rear sealing ring is provided on the side of the bra facing away from the breast, a lower sealing ring is provided at the lower opening of the accommodating chamber, and a lower sealing groove cooperating with the lower sealing ring is provided on the upper side of the milk cover; the rear sealing ring and the lower sealing ring cooperate with the front sealing groove and the lower sealing groove to seal the air pressure chamber.

[0008] The breast pump as described above is characterized in that the lower portion of the lower sealing ring with the lower opening is further provided with a rear shell lower accommodating cavity for inserting a milk cap, the rear side of the rear shell lower accommodating cavity is open, the front side wall of the rear shell lower accommodating cavity is provided with a lower accommodating cavity groove, and the front side wall of the milk cap is provided with a milk cap protrusion that is snapped into the lower accommodating cavity groove.

[0009] The breast pump as described above is characterized in that the deformation structure is integrally formed and arranged at the upper and rear ends of the milk suction channel.

[0010] The breast pump as described above is characterized in that a front shell connecting portion is provided on the inner side of the rear end of the front shell, the front shell connecting portion is provided with a fixing groove, and a connecting seat is provided on the front side of the rear shell to cooperate with the front shell connecting portion, and the connecting seat is provided with a fixing buckle to cooperate with the fixing groove.

[0011] The breast pump as described above is characterized in that a door-shaped frame is provided on the front side of the brassiere, and the front sealing groove is provided on the door-shaped frame.

[0012] The breast pump as described above is characterized in that a connecting portion is provided between the milk suction channel and the milk cover, and the lower sealing groove is provided on the outer wall of the connecting portion.

[0013] The breast pump as described above is characterized in that the switch assembly includes a control circuit board in the front shell and a rocker switch connected to the control circuit board, the rocker switch is connected to a rocker body on the outside, the side wall of the rocker body is provided with a rocker annular groove, a sealing silicone ring is sealed in the rocker annular groove, and a decorative cover is provided on the outside of the sealing silicone ring.

[0014] The breast pump as described above is characterized in that a connector is provided on the inner wall of the decorative cover, and the connector passes through the sealing silicone ring to fix the rocker body, the sealing silicone ring and the decorative cover to the inner wall of the front shell.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a breast pump, comprising a front shell and a rear shell, an electric air pump assembly is provided between the front shell and the rear shell, the front shell is provided with a switch assembly connected to the electric air pump assembly, the rear shell is sealedly connected to an integrated brassiere unit through a sealing structure, an air pressure chamber is formed between the integrated brassiere unit and the rear shell, the integrated brassiere unit comprises a brassiere, a milk suction channel connected to the brassiere, and a milk cover arranged at the lower end of the milk suction channel, the milk suction channel is provided with a deformation structure, and the milk cover is provided with a one-way valve; the brassiere, the milk suction channel, the deformation structure, the milk cover and the one-way valve are an integrally formed structure; the brassiere, the milk suction channel and the milk cover are connected to form the milk suction channel, and the lower part of the milk cover is detachably and sealably connected to a milk storage container.

[0017] The breast shield, milk suction channel, deformation structure, milk cover and one-way valve of the breast pump provided by the present invention are an integrally formed structure, so that the breast pump has fewer parts, simple assembly, short manufacturing time and low manufacturing cost, and the breast pump has a reasonable structural design, a small size and is easy to carry and transport.

[0018] The breast pump's rear housing is sealed to the integrated bra unit via a sealing structure. This ensures a highly airtight air chamber between the integrated bra unit and the rear housing, effectively improving the pump's operating efficiency. The milk storage container is detachably connected to the milk cap, allowing it to be used directly with a pacifier, replacing a conventional feeding bottle. This allows the breast pump to be multifunctional and saves money.

Brief Description of the Drawings

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 It is a structural exploded diagram of the present invention;

[0021] Figure 3 This is an exploded view of the structure of another direction of the present invention;

[0022] Figure 4 is a perspective view of the rear housing of the present invention;

[0023] Figure 5 is a three-dimensional view of the rear housing of the present invention from another direction;

[0024] Figure 6 is a three-dimensional view of the rear housing of the present invention from another direction;

[0025] Figure 7 It is a three-dimensional diagram of the integrated bra suction bowl of the present invention;

[0026] Figure 8 It is a three-dimensional view of the integrated bra suction bowl of the present invention from another direction;

[0027] Figure 9 It is a three-dimensional view of the integrated bra suction bowl of the present invention from another direction;

[0028] Figure 10 It is a rear view of the present invention;

[0029] Figure 11 yes Figure 10 AA cross-sectional view;

[0030] Figure 12 is a side view of the present invention;

[0031] Figure 13 yes Figure 12 GG cross-sectional view;

[0032] Figure 14 It is a structural explosion diagram of the switch assembly of the present invention. [Specific implementation method]

[0033] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. The embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various 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 addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not 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" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] Example 1:

[0037] A breast pump, which includes a front shell 1 and a rear shell 2, an electric air pump assembly 3 is provided between the front shell 1 and the rear shell 2, and the front shell 1 is provided with a switch assembly 4 connected to the electric air pump assembly; the rear shell 2 is sealed with an integrated bra unit 6 through a sealing structure 5, an air pressure chamber 7 is formed between the integrated bra unit 6 and the rear shell 2, and the electric air pump assembly 3 can suck air into the air pressure chamber 7 when working, the air pressure chamber 7 is formed between the integrated bra unit 6 and the rear shell 2, the integrated bra unit 6 includes a bra 60, a milk suction channel 61 connected to the bra 60, and a milk cover 62 arranged at the lower end of the milk suction channel 61, the milk suction channel 61 is provided with a deformation structure 63, and the milk cover 62 is provided with a milk cover hole 620 and a one-way valve 64; the bra 60, the milk suction channel 61 and the milk cover 62 are connected to form a milk suction channel, and the lower part of the milk cover 62 is detachably and sealedly connected to a milk storage container 8. The bra 60, the milk suction channel 61, the milk cover 62, the deformable structure 63 and the one-way valve 64 are an integrated structure. The bra 60, the milk suction channel 61 and the milk cover 62 are connected to form a milk suction channel, and the lower part of the milk cover 62 is detachably sealed and connected to the milk storage container 8.

[0038] The working principle of the present invention is as follows: when the switch assembly 4 is activated, the electric air pump assembly 3 is activated, and the electric air pump assembly 3 sucks air into the air pressure chamber 7. Under the action of pressure, the deformation structure 63 is deformed, and the bra 60 works to suck milk, and the milk flows into the milk storage container 8 through the milk suction channel.

[0039] The breast pump provided by the present invention has a breast shield, a milk suction channel, a deformable structure, a milk cover and a one-way valve as an integrally formed structure. Compared with the prior art, the breast pump has fewer parts, simpler assembly, shorter manufacturing time and lower manufacturing cost. The breast pump has a reasonable structural design, a small size and is convenient to carry and transport.

[0040] The back shell of the breast pump is sealed to the integrated breast shield unit via a sealing structure. This ensures a highly airtight air chamber between the integrated breast shield unit and the back shell, effectively improving the efficiency of the breast pump. The milk storage container and milk cap are detachable and can be used directly with a pacifier, replacing a regular bottle, making the breast pump multifunctional and saving money.

[0041] Furthermore, the rear shell 2 of the present invention is provided with a accommodating cavity 21 protruding toward the front shell, the integrated bra unit 6 extends into the accommodating cavity 21, a rear opening 22 is provided on the rear side of the accommodating cavity 21, a lower opening 23 is provided at the lower part of the accommodating cavity 21, and the accommodating cavity 21 is sealed by the sealing structure 5 to form an air pressure cavity 7.

[0042] Furthermore, the sealing structure 5 of the present invention includes a rear sealing ring 51 disposed at the rear opening 22 of the accommodating chamber. A front sealing groove 52 is provided on the side of the bra 60 facing away from the breast, which cooperates with the rear sealing ring 51. A lower sealing ring 53 is provided at the lower opening 23 of the accommodating chamber 21. A lower sealing groove 54 is provided below the milk suction passage 61 and above the milk cover 62, which cooperates with the lower sealing ring 53. The rear sealing ring 51 and the lower sealing ring 53 cooperate with the front sealing groove 52 and the lower sealing groove 54 to form a seal, sealing the air pressure chamber 7. This ensures that the air pressure chamber 7 formed between the integrated bra unit 6 and the rear shell 2 is extremely airtight, effectively improving the operating efficiency of the breast pump.

[0043] Furthermore, the rear side opening 241 of the rear shell lower accommodating chamber 24 of the present invention, the front side wall of the rear shell lower accommodating chamber 24 is provided with a lower accommodating chamber groove 242, the front side wall of the milk cap 62 is provided with a milk cap protrusion 621 that is inserted into the lower accommodating chamber groove 242, and the two side walls of the rear shell lower accommodating chamber 24 are provided with fastening protrusions 243. When the milk cap 62 is inserted into the rear shell lower accommodating chamber 24, the fastening protrusions 243 can form a fastening effect on the outer wall of the milk cap 62.

[0044] Furthermore, the deformable structure 63 of the present invention is integrally formed at the upper and rear ends of the milking channel 61, eliminating the need for a suction cup assembly and further conserving space within the breast pump. Furthermore, by placing the deformable structure 63 at the upper and rear ends of the milking channel, the electric air pump assembly 3 of the breast pump can be positioned on either side of the housing 203, further conserving space within the breast pump compared to conventional breast pumps.

[0045] Furthermore, the front shell 1 of the present invention is provided with a front shell connecting portion 11 on the inner side of the rear end thereof, and the front shell connecting portion 11 is provided with a fixing groove 12. The front side of the rear shell 2 is provided with a connecting seat 25 that cooperates with the front shell connecting portion 11, and the connecting seat 25 is provided with a fixing buckle 251 that cooperates with the fixing groove 12. When the front shell and the rear shell are connected and fixed, the fixing buckle 251 can be snapped into the fixing groove 12, thereby making the fixation more secure.

[0046] Furthermore, the brassiere 60 of the present invention is provided with a door-shaped frame 601 on the front side, and the front sealing groove 52 is disposed on the door-shaped frame 601. The door-shaped frame 601 effectively strengthens the seal. A connecting portion 611 is provided between the milking passage 61 and the milk cover 62, and the lower sealing groove 54 is disposed on the outer wall of the connecting portion 611. The size of the door-shaped frame 601 is comparable to the size of the rear opening 22 of the accommodating cavity 21, and the size of the connecting portion 611 is comparable to the size of the lower opening 23 of the accommodating cavity 21. The placement of the lower sealing groove 54 on the connecting portion 611 prevents deformation of the deformable structure 63 or the milk cover 62.

[0047] Furthermore, the lower portion of the lower sealing ring 53 of the present invention is provided with a rear shell lower accommodating chamber 24 for inserting the milk cap 62. The upper portion of the rear shell lower accommodating chamber 24 communicates with the accommodating chamber 21, and the lower sealing ring 53 is disposed between the rear shell lower accommodating chamber 24 and the accommodating chamber 21. Support edges 240 may also be provided on both sides between the rear shell lower accommodating chamber 24 and the accommodating chamber 21 below the lower sealing ring 53. The support edges 240 support the lower sealing ring 53 and prevent deformation. The lower sealing ring 53 and the two support edges 240 separate the rear shell lower accommodating chamber 24 from the accommodating chamber 21. When the air pressure chamber 7 is compressed and deformed, the milk cap 62 located in the rear shell lower accommodating chamber 24 will not deform.

[0048] Furthermore, the brassiere 60, milking passage 61, deformable structure 63, door frame 601, connecting portion 611, milk cover 62, and one-way valve 64 of the present invention are integrally formed from a flexible material, such as silicone or rubber. This integrated structure reduces the number of parts required compared to conventional breast pumps.

[0049] Furthermore, the rear shell 2 of the present invention includes a rear shell bottom plate 201, the rear side of the rear shell bottom plate 201 is provided with a rear shell rear panel 202, the rear opening 22 is set on the rear shell rear panel 202, and the front edge of the rear shell rear panel 202 is provided with a rear panel groove 2021, and the upper rear end of the front shell can be stuck in the rear panel groove.

[0050] Furthermore, the rear housing 2 of the present invention is provided with a housing 203 protruding toward the front housing. The housing 203 defines a housing 21. The electric air pump assembly 3 includes an air pump 31, a battery 32, and a solenoid valve 33 disposed on both sides of the housing 203. The housing 203 is provided with an air intake hole 204, and one end of the air pump 31 communicates with the air intake hole 204.

[0051] Furthermore, the milk cap 62 of the present invention is provided with an internal thread, and the milk storage container 8 can be used directly with a pacifier to replace an ordinary milk bottle, thereby realizing the multifunctional use of the breast pump and saving budget.

[0052] In some optional embodiments, when the milk cap 62 is made of a flexible material, in order to facilitate the connection between the milk storage container 8 and the milk cap 62, a hard rubber ring is provided on the outer side of the milk cap 62, thereby increasing the overall hardness of the milk cap and facilitating the fixed connection between the milk storage container and the flexible milk cap.

[0053] like Figure 14As shown, the switch assembly 4 of the present invention includes a control circuit board 41 in the front housing 1 and a rocker switch 42 connected to the control circuit board. The rocker switch 42 is connected to a rocker body 43 on the outside. The side wall of the rocker body 43 is provided with a rocker annular groove 44. A sealing silicone ring 45 is sealed in the rocker annular groove 44. A decorative cover 46 is provided on the outside of the sealing silicone ring 45. Since the rocker switch 3 and the rocker body 4 are matched with the control circuit board 2, the rocker switch assembly of the present invention can be made smaller in size and occupies less space in the breast pump, which is beneficial for assembly into the breast pump and further reducing the size of the breast pump.

[0054] Furthermore, a connector 461 is provided on the inner wall of the decorative cover 46. This connector 461 passes through a sealing silicone ring 45 to secure the joystick body 43, the sealing silicone ring 45, and the decorative cover 46 to the front housing 1. The sealing silicone ring 45 seals the joystick body and the breast pump housing, and the decorative cover and the breast pump housing. This improves the waterproofing of the main unit switch compared to existing breast pumps.

[0055] Furthermore, a waterproof annular bead 451 is provided on the outer wall of the sealing silicone ring 45. This waterproof bead 451 tightly fits against the inner surface of the decorative cover 46, preventing water from entering the breast pump through the gap between the sealing silicone ring 45 and the decorative cover 46, thereby providing a more effective seal and waterproofing. The sealing silicone ring 45 is provided with a silicone ring hole 451 through which the connector 461 passes. This ensures that the entire breast pump is fully waterproof.

[0056] Furthermore, a light-blocking bracket 47 is provided between the control circuit board 41 and the front housing 1 . The light-blocking bracket 47 can prevent light leakage and protect privacy.

[0057] The breast pump provided by the present invention is a wearable integrated breast pump, in which a bra, a milk suction channel, a deformable structure, a milk cover and a one-way valve are arranged as an integrally formed structure. Compared with existing breast pumps, the breast pump has fewer parts, is simple to assemble, is small in size, is easy to disassemble and clean, and is easy to carry and transport.

[0058] The rear shell of the breast pump of the present invention is sealed to the integrated bra unit through the sealing structure, so that the air pressure cavity formed between the integrated bra unit and the rear shell has very good sealing performance, thereby effectively improving the working efficiency of the breast pump.

[0059] The milk storage container of the breast pump of the present invention is detachably connected to the milk cover, and the milk storage container can be directly used with a pacifier to replace an ordinary feeding bottle, thereby realizing the multifunctional use of the breast pump and saving budget.

[0060] The breast pump of the present invention arranges the deformable structure at the upper part and rear end of the milk suction channel, and the electric air pump assembly of the breast pump can be arranged on the left and right sides of the accommodating cavity shell, which can further save the space inside the breast pump compared with the existing breast pump.

[0061] The breast pump of the present invention uses a rocker switch and a rocker body in combination with a control circuit board. This allows the rocker switch assembly of the present invention to be smaller in size and occupy less space in the breast pump, making it easier to assemble in the breast pump and further reducing the size of the breast pump.

Claims

1. A breast pump, comprising a front shell (1) and a rear shell (2), wherein an electric air pump assembly (3) is provided between the front shell (1) and the rear shell (2), and the front shell (1) is provided with a switch assembly (4) connected to the electric air pump assembly; characterized in that: The rear shell (2) is sealedly connected to an integrated bra unit (6) via a sealing structure (5); an air pressure chamber (7) is formed between the integrated bra unit (6) and the rear shell (2); the integrated bra unit (6) comprises a bra (60), a milk suction channel (61) connected to the bra (60), a milk cover (62) arranged at the lower end of the milk suction channel (61); the milk suction channel (61) is provided with a deformation structure (63); and the milk cover (62) is provided with a one-way valve (64); the bra (60), the milk suction channel (61), the deformation structure (63), the milk cover (62) and the one-way valve (64) are an integrally formed structure; the bra (60), the milk suction channel (61) and the milk cover (62) are connected to form a milk suction channel, and the lower part of the milk cover (62) is detachably sealed and connected to a milk storage container (8); The rear shell (2) is provided with a receiving cavity (21) protruding toward the front shell, the integrated bra unit (6) extends into the receiving cavity (21), a rear opening (22) is provided at the rear side of the receiving cavity (21), a lower opening (23) is provided at the lower portion of the receiving cavity (21), and the receiving cavity (21) is sealed by the sealing structure (5) to form an air pressure cavity (7); The sealing structure (5) includes a rear sealing ring (51) provided at the rear opening (22) of the accommodating chamber, a front sealing groove (52) cooperating with the rear sealing ring (51) is provided on the side of the bra (60) facing away from the breast, a lower sealing ring (53) is provided at the lower opening (23) of the accommodating chamber (21), and a lower sealing groove (54) cooperating with the lower sealing ring (53) is provided on the upper side of the milk cover (62); the rear sealing ring (51) and the lower sealing ring (53) cooperate with the front sealing groove (52) and the lower sealing groove (54) to seal the air pressure chamber (7); A door-shaped frame (601) is provided on the wall of the bra (60) facing away from the breast, and the front sealing groove (52) is provided on the door-shaped frame (601).

2. A breast pump according to claim 1, characterized in that: The lower portion of the lower sealing ring (53) of the lower opening (23) is further provided with a rear shell lower accommodating cavity (24) for inserting the milk cap (62), a rear side opening (241) of the rear shell lower accommodating cavity (24), a front side wall of the rear shell lower accommodating cavity (24) is provided with a lower accommodating cavity groove (242), and a front side wall of the milk cap (62) is provided with a milk cap protrusion (621) that is inserted into the lower accommodating cavity groove (242).

3. A breast pump according to claim 1, characterized in that: The deformable structure is integrally formed and arranged at the upper and rear ends of the milk suction channel.

4. A breast pump according to claim 1, characterized in that: A front shell connecting portion (11) is provided on the inner side of the rear end of the front shell (1), and the front shell connecting portion (11) is provided with a fixing groove (12). A connecting seat (25) cooperating with the front shell connecting portion (11) is provided on the front side of the rear shell (2), and the connecting seat (25) is provided with a fixing buckle (251) cooperating with the fixing groove (12).

5. A breast pump according to claim 1, characterized in that: A connecting portion (611) is provided between the milk suction channel (61) and the milk cover (62), and the lower sealing groove (54) is provided on the outer wall of the connecting portion (611).

6. A breast pump according to claim 1, characterized in that: The switch assembly (4) includes a control circuit board (41) in the front shell (1) and a rocker switch (42) connected to the control circuit board. The rocker switch (42) is connected to a rocker body (43) on its outer side. The rocker body (43) has a rocker annular groove (44) on its side wall. A sealing silicone ring (45) is sealed in the rocker annular groove (44). A decorative cover (46) is provided on the outer side of the sealing silicone ring (45).

7. A breast pump according to claim 6, characterized in that: The inner wall of the decorative cover (46) is provided with a connecting piece (461), and the connecting piece (461) passes through the sealing silicone ring (45) to fix the rocker body (43), the sealing silicone ring (45) and the decorative cover (46) to the inner wall of the front shell (1).