Breast pump

Abstract

The invention relates to the technical field of mother and baby products, and provides a breast pump which comprises a main machine, a milk bowl and a breast pumping part, the breast pumping part is provided with a three-way part with three ends communicated with one another, and the main machine is provided with an air pressure adjusting device; the first end of the three-way piece is butted with the human breast, and the three-way piece and the second end are butted with the milk bowl; the third end of the three-way piece is in butt joint with the air pressure adjusting device, the air pressure adjusting device operates to adjust the air pressure in the three-way piece, and the breast pumping piece conducts breast pumping when the three-way piece is in a negative pressure state. The breast pump adopts the design that the main machine, the milk bowl and the breast pumping part are separable, and is convenient for a user to disassemble, clean and carry. The three-way piece of the breast pumping piece is of a three-way structure, so that a breast pumping channel directly acts on the breast of the human body. The breast pumping channel directly executes the breast pumping action in the negative pressure state, complex linkage of a traditional three-way piece and an air bag is avoided, the structure is simplified, and the negative pressure response speed is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of mother and baby products, and particularly relates to a breast pump. Background Art

[0002] Existing breast pumps usually use a three-way piece as the core connecting component, and its structure includes a three-way piece, an air pump, and a deformable airbag. Among them, the first end of the three-way piece is connected to the airbag, the second end serves as a milk suction channel for generating negative pressure, and the third end serves as a milk output channel and is connected to a milk bowl. In order to prevent the milk in the milk bowl from flowing back to the milk output channel under the action of negative pressure, a one-way valve is usually provided at the third end of the three-way piece. Although this design can achieve the basic milk suction function, it has the following technical defects: First, due to the use of multiple independent components such as a three-way piece, an air pump, an airbag, and a one-way valve, the overall structure of the breast pump is relatively complex, and the number of components increases, which not only increases the assembly difficulty but also raises the production cost. Secondly, the air path structure becomes lengthy due to the series connection of multiple components, which may affect the negative pressure transmission efficiency and result in unstable suction force. In addition, the volume of traditional airbags is usually large, making it difficult to miniaturize the overall size of the breast pump and resulting in poor portability. More critically, the deformation response speed of the airbag is slow, making it difficult to meet the requirements of high-frequency milk suction, which affects the use comfort and milk suction efficiency. Therefore, there is still much room for improvement in the structural optimization, volume control, and response speed of existing breast pumps. Summary of the Invention

[0003] The present invention provides a breast pump, which adopts a separable design of the main body, milk bowl, and milk suction component, facilitating users to disassemble, clean, and carry. The three-way piece of the milk suction component adopts a three-way structure, enabling the milk suction channel to directly act on the human breast. Since the traditional airbag structure is eliminated or reduced, the product volume is reduced, improving portability and making it convenient for users to wear. The milk suction channel directly performs the milk suction action under negative pressure, avoiding the complex linkage of the traditional three-way piece and airbag, simplifying the structure and enhancing the negative pressure response speed. In addition, the separable design allows users to flexibly replace the milk bowl or milk suction component, improving the use convenience. After the overall structure is optimized, the assembly difficulty of the breast pump is reduced, the production cost is decreased, and at the same time, the milk suction efficiency and comfort are improved.

[0004] A breast pump designed according to this purpose includes a main body, a milk bowl, and a milk suction component. The milk suction component is provided with a three-way piece with three ends communicating with each other, and the main body is provided with a pressure regulating device; the first end of the three-way piece is connected to the human breast, the three-way piece is connected to the milk bowl at the second end; the third end of the three-way piece is connected to the pressure regulating device, and the pressure regulating device operates to adjust the internal pressure of the three-way piece, and the milk suction component performs the milk suction action under the negative pressure state of the three-way piece.

[0005] The three-way part is provided with a milk suction channel, and the air pressure regulating device is directly communicated with the milk suction channel. The air pressure regulating device extracts the gas in the milk suction channel, and a negative pressure is formed in the milk suction channel; alternatively, the air pressure regulating device inputs gas into the milk suction channel to discharge the milk in the milk suction channel.

[0006] The side part of the three-way part is provided with an adjustment end group for docking with the air pressure regulating device, and the air pressure regulating device is directly communicated with the three-way part through the adjustment end group.

[0007] The air pressure regulating device includes an operating pump directly communicated with the milk suction channel to regulate the internal air pressure of the milk suction channel. The air pressure regulating device is configured with one or two operating pumps, so that the air pressure regulating device forms a single-pump mode or a double-pump mode to regulate the internal air pressure of the milk suction channel.

[0008] The air pressure regulating device includes a gas output air path, a gas input air path and a switching valve. The first ends of the gas output air path and the gas input air path are connected to the corresponding operating pumps, and the second ends of the gas output air path and the gas input air path are connected to the corresponding switching valves; the third ends of the gas output air path and the gas input air path are directly communicated with the milk suction channel; the air intake and air outlet of the milk suction channel are switched through the gas output air path and the gas input air path, and then the milk suction mode and the milk discharging mode of the milk suction part are switched.

[0009] The breast pump further includes a driver arranged in the main body. A switching member is arranged between the three-way part and the milk bowl, and the driver and the switching member cooperate to switch the on-off between the three-way part and the milk bowl; The three-way part is provided with a milk suction channel for docking with the milk bowl, the switching member is arranged at the liquid outlet end of the milk suction channel, and the driver and the switching member cooperate to open and close the liquid outlet end of the milk suction channel.

[0010] The driver is a sucker-type electromagnet that generates a magnetic field, and the switching member is a magnetic field cooperation part. The driver and the magnetic field cooperation part cooperate to open and close the liquid outlet end of the milk suction channel.

[0011] The driver is a motor assembly or an electromagnet with a drive shaft structure. The drive shaft of the driver is directly or indirectly cooperated with the switching member, and the drive shaft of the driver is provided with a transmission structure that forms an indirect cooperation with the switching member.

[0012] The switching member is arranged obliquely and is provided with a magnetic cooperation part. The main body is provided with an installation inclined position that is obliquely adjacent to the switching member. The driver is installed on the installation inclined position; The switching member is provided with an elastic connecting sleeve. The elastic connecting sleeve is sleeved outside the three-way part of the milk suction part. The elastic connecting sleeve is provided with a ventilation port communicating with the milk suction channel. The milk bowl is provided with a first connection end group corresponding to the ventilation port, a first positioning part is arranged on the milk bowl, and a limiting block is arranged inside the milk bowl; The milk suction member is detachably installed on the milk bowl. The milk suction member is assembled with the milk bowl. The switch member of the three-way member abuts against the inner side of the first positioning portion. The three-way member is limited on the inner side of the limit block. The first connection end group is correspondingly arranged with the ventilation port. In the state where the milk suction member is used for milk suction, the ventilation port is located above the highest liquid level position of the milk suction channel to prevent the milk in the milk suction channel from overflowing along the ventilation port.

[0013] On the outer side of the main body, there are a second positioning portion and a first positioning inclined surface portion connected to the second positioning portion. On the milk bowl, there is a second positioning inclined surface portion. Inside the main body, there is a pressure regulating device for regulating the internal air pressure of the milk suction channel. The main body is provided with a second connection end group connected to the pressure regulating device. The milk bowl is detachably installed on the main body. The main body is assembled with the milk bowl. The outer side of the first positioning portion of the milk bowl abuts against the second positioning portion, and the second positioning inclined surface portion abuts against the first positioning inclined surface portion. The first connection end group and the second connection end group are relatively inserted. A sealing member is provided between the first connection end group and the second connection end group. The sealing member is sleeved on the outer side of the first connection end group or the second connection end group.

[0014] The beneficial technical effects of the present invention are as follows: This breast pump adopts a separable design of the main body, milk bowl and milk suction member, which is convenient for users to disassemble, clean and carry. The three-way member of the milk suction member adopts a three-way structure, enabling the milk suction channel to directly act on the human breast. Since the traditional airbag structure is cancelled or reduced, the product volume is reduced, improving portability and making it lightweight for human wear. The milk suction channel directly performs the milk suction action under negative pressure, avoiding the complex linkage of the traditional three-way member and airbag, simplifying the structure and enhancing the negative pressure response speed. In addition, the separable design allows users to flexibly replace the milk bowl or milk suction member, improving the use convenience. After the overall structure is optimized, the assembly difficulty of the breast pump is reduced, the production cost is reduced, and at the same time, the milk suction efficiency and comfort are improved. Description of the Drawings

[0015] Figure 1 It is a three-dimensional cross-sectional structure diagram of a breast pump according to an embodiment of the present invention.

[0016] Figure 2 It is a planar cross-sectional structure diagram of a breast pump according to an embodiment of the present invention.

[0017] Figure 3 It is a cross-sectional structure diagram of the opening and closing device of a breast pump according to an embodiment of the present invention in the closed state.

[0018] Figure 4 It is a cross-sectional structure diagram of the opening and closing device of a breast pump according to an embodiment of the present invention in the open state.

[0019] Figure 5Schematic three-dimensional structure diagram of the output gas during the single-pump operation of a breast pump according to an embodiment of the present invention.

[0020] Figure 6 Schematic three-dimensional structure diagram of the input gas during the single-pump operation of a breast pump according to an embodiment of the present invention.

[0021] Figure 7 Schematic three-dimensional structure diagram of the output gas during the dual-pump operation of a breast pump according to an embodiment of the present invention.

[0022] Figure 8 Schematic three-dimensional structure diagram of the input gas during the dual-pump operation of a breast pump according to an embodiment of the present invention.

[0023] Figure 9 Schematic exploded structure diagram of a breast pump according to an embodiment of the present invention.

[0024] Figure 10 Schematic exploded structure diagram of a breast pump from another perspective according to an embodiment of the present invention.

[0025] Figure 11 Schematic three-dimensional cross-sectional structure diagram of the exploded assembly of a breast pump according to an embodiment of the present invention.

[0026] Figure 12 Schematic exploded structure diagram of the milk bowl and the seal according to an embodiment of the present invention.

[0027] Figure 13 Schematic exploded structure diagram of the main body and the seal according to an embodiment of the present invention. Detailed implementation manners

[0028] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In order to make the above objects, features, and advantages of the present application more obvious and understandable, many specific details are set forth in the following description for a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0029] Refer to Figures 1-13 , a breast pump, including a main body 1, a milk bowl 2, and a milk suction member 3. The milk suction member 3 is provided with a three-way member 3.1 with three ends communicating with each other. The main body 1 is provided with a pneumatic pressure regulating device 4. The first end of the three-way member 3.1 is connected to the human breast, the three-way member 3.1 is connected to the second end of the milk bowl 2, the third end of the three-way member 3.1 is connected to the pneumatic pressure regulating device 4, and the pneumatic pressure regulating device 4 operates to adjust the internal air pressure of the three-way member 3.1. The milk suction member 3 performs a milk suction action under the negative pressure state of the three-way member 3.1.

[0030] This breast pump adopts a detachable design for the main unit 1, milk bowl 2 and milk suction component 3, which is convenient for users to disassemble, clean and carry. The tee piece 3.1 of the milk suction component 3 adopts a tee structure, enabling the milk suction channel 3.2 to directly act on the human breast, eliminating the traditional airbag structure, reducing the product volume, enhancing portability, and making it lightweight for human wear. The milk suction channel 3.2 directly performs the milk suction action under negative pressure, avoiding the complex linkage of the traditional tee piece and airbag, simplifying the structure and improving the negative pressure response speed. In addition, the detachable design allows users to flexibly replace the milk bowl 2 or the milk suction component 3, improving the usability. After optimizing the overall structure, the assembly difficulty of the breast pump is reduced, the production cost is decreased, and at the same time, the milk suction efficiency and comfort are enhanced.

[0031] The milk suction channel 3.2 is provided inside the tee piece 3.1, and the air pressure regulating device 4 is directly connected to the milk suction channel 3.2. The air pressure regulating device 4 extracts the gas from the milk suction channel 3.2, and the milk suction channel 3.2 forms a negative pressure; or, the air pressure regulating device 4 inputs gas into the milk suction channel 3.2 to discharge the emulsion inside the milk suction channel 3.2.

[0032] The side of the tee piece 3.1 is provided with an adjustment end group 3.3 for docking with the air pressure regulating device 4, and the air pressure regulating device 4 is directly connected to the tee piece 3.1 through the adjustment end group 3.3.

[0033] The main unit 1 is internally provided with an air pressure regulating device 4 that is directly connected to the milk suction channel 3.2 of the tee piece 3.1, eliminating the traditional airbag structure, reducing the air path transmission loss, and improving the negative pressure stability. The air pressure regulating device 4 forms a negative pressure by directly extracting the gas from the milk suction channel 3.2, with a faster response speed, and can support the high-frequency milk suction mode. Compared with the traditional air pump-airbag combination, this design reduces the number of components, lowers the failure rate, and at the same time optimizes the air path efficiency. The pump body of the air pressure regulating device 4 can be configured with a low power to enhance the user experience.

[0034] The air pressure regulating device 4 includes an operating pump 4.1 that is directly connected to the milk suction channel 3.2 to regulate the internal air pressure of the milk suction channel 3.2. The air pressure regulating device 2 is configured with one or two operating pumps 4.1, so that the air pressure regulating device 2 constitutes a single-pump mode or a double-pump mode to regulate the internal air pressure of the milk suction channel 3.2.

[0035] The air pressure regulating device 4 includes a gas output air path 4.2, a gas input air path 4.3 and a switching valve 4.4. The first ends of both the gas output air path 4.2 and the gas input air path 4.3 are connected to the corresponding operating pump 4.1, and the second ends of both the gas output air path 4.2 and the gas input air path 4.3 are connected to the corresponding switching valve 4.4; the third ends of both the gas output air path 4.2 and the gas input air path 4.3 are directly communicated with the milk suction channel 3.2; the air intake and air outlet of the milk suction channel 3.2 are switched through the gas output air path 4.2 and the gas input air path 4.3, so as to switch the milk suction mode and milk discharging mode of the milk suction member 3.

[0036] The hollow three-way structure of the three-way member 3.1 optimizes the air flow path. The first end of the three-way member 3.1 corresponds to the human breast, the second end of the three-way member 3.1 is connected to the milk bowl 2, and the adjustment end group 3.3 on the side of the three-way member 3.1 cooperates with the air pressure regulating device 4 to make the air pressure regulation of the milk suction channel 3.2 more direct and efficient. Compared with the traditional three-way member that needs to be additionally connected with an airbag, this design reduces the air path length and improves the negative pressure transmission efficiency. The optimized layout of the adjustment end group 3.3 makes the volume of the milk suction member 3 more compact, effectively reducing the product volume.

[0037] See Figure 5 And Figure 6 , when the air pressure regulating device 4 is in the single-pump mode, a connection end group forming an air intake input end 7 and an air outlet output end 8 is provided between the milk bowl 2 and the host 1. The suction end of the operating pump 4.1 is connected to the air outlet output end 8 through a first pipeline 9, and the air outlet end of the operating pump 4.1 is connected to the air intake input end 7 through a second pipeline 10. The first pipeline 9 and the second pipeline 10 are respectively connected to the switching valve 4.4. The switching valve 4.4 is an electromagnetic valve. The first pipeline 9 and the second pipeline 10 are provided with gaps 11 communicating with the outside air corresponding to the switching valve 4.4. When the milk suction channel 3.2 needs to suck milk, the gap 11 of the first pipeline 9 is closed by the switching valve 4.4 of the first pipeline 9, and the gap 11 of the second pipeline 10 is opened. The gas in the milk suction channel 3.2 enters the second pipeline 10 through the operating pump 4.1 along the first pipeline 9, and then the gas is discharged to the outside air from the gap 11 of the second pipeline 10.

[0038] See Figure 6 , when the milk suction channel 3.2 needs to release the milk, the gap 11 of the first pipeline 9 is opened, the gap 11 of the second pipeline 10 is closed by the switching valve 4.4 of the second pipeline 10, the operating pump 4.1 operates, the outside air enters the second pipeline 10 through the gap 11 of the first pipeline 9 through the operating pump 4.1, and then the gas enters the milk suction channel 3.2. When the liquid outlet end of the milk suction channel 3.2 is opened, the milk enters the milk bowl 2 along the milk suction channel 3.2.

[0039] See Figure 7 And Figure 8, when the air pressure regulating device 4 is in the dual-pump mode, the suction end of one of the operating pumps 4.1 is connected to the gas output air path 4.2. Both the gas output air path 4.2 and the gas input air path 4.3 are connected to a switching valve 4.4. The outlet end of the operating pump 4.1 is communicated with the outside air. The suction end of the other operating pump 4.1 is communicated with the outside air, and the outlet end of the operating pump 4.1 is connected to the gas input air path 4.3. When milk suction is required in the milk suction channel 3.2, the switching valve 4.4 in the gas input air path 4.3 is closed, and the switching valve 4.4 in the gas output air path 4.2 is opened. The gas in the milk suction channel 3.2 is discharged into the outside air along the gas output air path 4.2 and the operating pump 4.1.

[0040] See Figure 8 , when the milk suction channel 3.2 needs to release the milk, the switching valve 4.4 in the gas input air path 4.3 is opened, and the switching valve 4.4 in the gas output air path 4.2 is closed. The outside air enters the milk suction channel 3.2 along the operating pump 4.1 and the gas input air path 4.3.

[0041] The air pressure regulating device 4 cooperates with the switching valve 4.4 through the gas output air path 4.2 and the gas input air path 4.3 to realize the rapid switching of the gas output and input of the milk suction channel 3.2, so that the milk suction mode and the milk discharging mode are seamlessly connected.

[0042] An opening and closing device 5 for opening and closing the liquid outlet end of the milk suction channel 3.2 is provided between the three-way member 3.1 and the milk bowl 2. In the closed state of the opening and closing device 5, the milk suction channel 3.2 is not communicated with the milk bowl 2 to cooperate with the negative pressure milk suction action of the milk suction channel 3.2. The opening and closing device 5 is opened during the process of releasing the milk in the milk suction channel 3.2, and the milk suction channel 3.2 is communicated with the milk bowl 2, and the milk in the milk suction channel 3.2 is discharged into the milk bowl 2.

[0043] The breast pump further includes a driver 5.3 arranged in the main body 1. A switching member 5.1 is provided between the three-way member 3.1 and the milk bowl 2. The driver 5.3 and the switching member 5.1 cooperate to switch the on-off between the three-way member 3.1 and the milk bowl 2; The three-way member 3.1 is provided with a milk suction channel 3.2 for docking with the milk bowl 2. The switching member 5.1 is arranged at the liquid outlet end of the milk suction channel 3.2. The driver 5.3 and the switching member 5.1 cooperate to open and close the liquid outlet end of the milk suction channel 3.2. The driver 5.3 and the switching member 5.1 cooperate to form the opening and closing device 5.

[0044] The driver 5.3 is a sucker-type electromagnet that generates a magnetic field, and the switching member 5.1 is a magnetic field cooperating member (such as a magnet or other magnetic metals, etc.). The driver 5.3 and the magnetic field cooperating member cooperate to open and close the liquid outlet end of the milk suction channel 3.2.

[0045] When the driver 5.3 is powered on, a magnetic field is generated to adsorb the switch member 5.1 to open the milk suction channel 3.2. When the driver 5.3 is powered off, the magnetic field is lost, and the switch member 5.1 moves away from the driver 5.3 to close the milk suction channel 3.2. Alternatively, by adjusting the forward and reverse currents of the driver 5.3, the switch member 5.1 is moved away from or closer to the driver 5.3 to open and close the milk suction channel 3.2.

[0046] The switch member 5.1 effectively replaces the traditional one-way valve. When the switch member 5.1 opens the milk suction channel 3.2, gas enters the milk suction channel 3.2, and the milk in the milk suction channel 3.2 can quickly flow into the milk bowl 2.

[0047] Alternatively, the driver 5.3 is a motor assembly or an electromagnet with a drive shaft structure. The drive shaft of the driver 5.3 is directly or indirectly engaged with the switch member 5.1, and the drive shaft of the driver 5.3 is provided with a transmission structure that indirectly cooperates with the switch member 5.1. The transmission structure can be a connecting rod, a gear, a pull rope, etc. For example, the drive shaft of the driver 5.3 is set as a telescopic shaft structure, and the drive shaft of the driver 5.3 makes the switch member 5.1 open and close by telescoping.

[0048] The switch member 5.1 is inclined and provided with a magnetic fitting 5.2. The main body 1 is provided with an installation inclined position 1.1 that is inclined and adjacent to the switch member 5.1, and the driver 5.3 is installed on the installation inclined position 1.1; The switch member 5.1 is provided with an elastic connecting sleeve 5.11. The elastic connecting sleeve 5.11 is sleeved outside the three-way member 3.1 of the milk suction member 3. The elastic connecting sleeve 5.11 is provided with a ventilation port 5.12 communicating with the milk suction channel 3.2. The milk bowl 2 is provided with a first connection end group 2.1 corresponding to the ventilation port 5.12. The milk bowl 2 is provided with a first positioning portion 2.2, and a limiting block 2.3 is arranged inside the milk bowl 2; The milk suction member 3 is detachably installed on the milk bowl 2. The milk suction member 3 is assembled with the milk bowl 2. The switch member 5.1 of the three-way member 3.1 abuts against the inside of the first positioning portion 2.2, the three-way member 3.1 is limited inside the limiting block 2.3, and the first connection end group 2.1 is correspondingly arranged with the ventilation port 5.12; When the milk suction member 3 is in the milk suction use state, the ventilation port 5.12 is located above the highest liquid level position of the milk suction channel 3.2 to prevent the milk in the milk suction channel 3.2 from overflowing along the ventilation port 5.12.

[0049] The outside of the main body 1 is provided with a second positioning portion 1.2 and a first positioning inclined surface portion 1.3 connected to the second positioning portion 1.2. The milk bowl 2 is provided with a second positioning inclined surface portion 2.4. The main body 1 is provided with a pressure adjustment device 4 for adjusting the internal air pressure of the milk suction channel 3.2, and the main body 1 is provided with a second connection end group 1.4 connected to the pressure adjustment device 4; The milk bowl 2 is detachably installed on the main body 1. The main body 1 is assembled with the milk bowl 2. The outer side of the first positioning portion 2.2 of the milk bowl 2 abuts against the second positioning portion 1.2, and the second positioning inclined surface portion 2.4 abuts against the first positioning inclined surface portion 1.3; the first connection end group 2.1 and the second connection end group 1.4 are relatively inserted into each other; A seal 6 is provided between the first connection end group 2.1 and the second connection end group 1.4. The seal 6 is sleeved on the outer side of the first connection end group 2.1 or the second connection end group 1.4.

[0050] In this embodiment, the driver 5.3 is a component that generates a magnetic field when energized, such as a coil, or can also be an electromagnet.

[0051] The switch member 5.1 realizes the opening and closing of the liquid outlet end of the milk suction channel 3.2 through its own elasticity or flexibility. The structure is simple and durable. Compared with a mechanical valve, the switch member 5.1 has no complex transmission components, reducing the failure points. Its elasticity or flexibility provides a stable sealing force to ensure no leakage during milk suction. This design reduces the production cost and at the same time improves the response speed, making the switching between milk suction and milk discharge smoother.

[0052] The driver 5.3 is installed on the installation inclined position 1.1 so that the driver 5.3 is relatively close to the magnetic mating member 5.2 of the switch member 5.1, so that the switch member 5.1 with the magnetic mating member 5.2 can be quickly adsorbed when the driver 5.3 is energized.

[0053] The switch member 5.1 is provided with an elastic connecting sleeve 5.11. The elastic connecting sleeve 5.11 is sleeved on the outer side of the three-way member 3.1 of the milk suction member 3. The elastic connecting sleeve 5.11 is provided with a ventilation port 5.12 communicating with the milk suction channel 3.2. The milk bowl 2 is provided with a first connection end group 2.1 corresponding to the ventilation port 5.12. The milk bowl 2 is provided with a first positioning portion 2.2, and a limiting block 2.3 is arranged inside the milk bowl 2; The milk suction member 3 is assembled with the milk bowl 2. The switch member 5.1 of the three-way member 3.1 abuts against the inner side of the first positioning portion 2.2, the three-way member 3.1 is limited inside the limiting block 2.3, and the first connection end group 2.1 and the ventilation port 5.12 are correspondingly arranged; When the milk suction member 3 is in the milk suction use state, the ventilation port 5.12 is located above the highest liquid level position of the milk suction channel 3.2 to prevent the milk in the milk suction channel 3.2 from overflowing along the ventilation port 5.12.

[0054] Since the first connection end group 2.1 and the ventilation port 5.12 are correspondingly arranged, and the switch member 5.1 has elasticity, a flexible connection between the milk suction member 3 and the milk bowl 2 is realized, which can meet the repeated disassembly and assembly between the milk suction member 3 and the milk bowl 2.

[0055] Since the first connection terminal group 2.1 and the second connection terminal group 1.4 are inserted into each other, and a seal 6 is provided between the first connection terminal group 2.1 and the second connection terminal group 1.4, and a groove is provided outside the main body 1 corresponding to the seal 6, a flexible sealed connection between the main body 1 and the milk bowl 2 is satisfied, and the seal 6 can be replaced, so the repeated disassembly and assembly between the main body 1 and the milk bowl 2 can be satisfied. The traditional components such as the airbag and the suction bowl are cancelled, and the whole machine assembly of the product is fast through the above positioning structure, inclined plane, etc. and is convenient for disassembly and assembly during the use by the user.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A breast pump, characterized in that: The invention comprises a main unit (1), a milk bowl (2) and a milk suction piece (3); the milk suction piece (3) is provided with a three-way piece (3.1) having three ends connected to each other; the main unit (1) is provided with an air pressure regulating device (4); a first end of the three-way piece (3.1) is connected to a breast of a human body, and the three-way piece (3.1) and a second end are connected to the milk bowl (2); a third end of the three-way piece (3.1) is connected to the air pressure regulating device (4); the air pressure regulating device (4) is operated to regulate the air pressure inside the three-way piece (3.1), and the milk suction piece (3) performs a milk suction action under a negative pressure state of the three-way piece (3.1).

2. The breast pump according to claim 1, characterized in that: The three-way piece (3.1) is provided with a milk suction channel (3.2), the air pressure regulating device (4) is directly connected to the milk suction channel (3.2), the air pressure regulating device (4) extracts air from the milk suction channel (3.2), and a negative pressure is formed in the milk suction channel (3.2); or, the air pressure regulating device (4) inputs air into the milk suction channel (3.2) to discharge milk in the milk suction channel (3.2).

3. The breast pump according to claim 1, characterized in that: The side of the three-way piece (3.1) is provided with an adjustment end group (3.3) that is connected to the air pressure adjustment device (4); the air pressure adjustment device (4) is directly connected to the three-way piece (3.1) via the adjustment end group (3.3).

4. The breast pump according to claim 2, characterized in that: The air pressure regulating device (4) comprises an operating pump (4.1) directly connected to the milk suction channel (3.2) to regulate the internal air pressure of the milk suction channel (3.2); the air pressure regulating device (2) is equipped with one or two operating pumps (4.1) so that the air pressure regulating device (2) forms a single pump mode or a double pump mode to regulate the internal air pressure of the milk suction channel (3.2).

5. The breast pump according to claim 4, characterized in that: The gas pressure regulating device (4) comprises a gas output gas circuit (4.2), a gas input gas circuit (4.3) and a switch valve (4.4); the first ends of the gas output gas circuit (4.2) and the gas input gas circuit (4.3) are connected to the corresponding operating pump (4.1); the second ends of the gas output gas circuit (4.2) and the gas input gas circuit (4.3) are connected to the corresponding switch valve (4.4); the third ends of the gas output gas circuit (4.2) and the gas input gas circuit (4.3) are directly connected to the milk suction channel (3.2); the gas output gas circuit (4.2) and the gas input gas circuit (4.3) are used to switch the gas intake and gas outlet of the milk suction channel (3.2), thereby switching the milk suction mode and the milk discharge mode of the milk suction piece (3).

6. The breast pump according to claim 1, characterized in that: It also includes a driver (5.3) disposed in the main unit (1); a switch component (5.1) is disposed between the three-way piece (3.1) and the milk bowl (2); the driver (5.3) and the switch component (5.1) cooperate to switch on and off between the three-way piece (3.1) and the milk bowl (2); The three-way piece (3.1) is provided with a milk suction channel (3.2) connected to the milk bowl (2); the switch component (5.1) is arranged on the liquid outlet end of the milk suction channel (3.2); and the driver (5.3) cooperates with the switch component (5.1) to open and close the liquid outlet end of the milk suction channel (3.2).

7. The breast pump according to claim 6, characterized in that: The driver (5.3) is a suction cup type electromagnet that generates a magnetic field, the switch component (5.1) is a magnetic field matching component, and the driver (5.3) cooperates with the magnetic field matching component to open and close the liquid outlet end of the milk suction channel (3.2).

8. The breast pump according to claim 6, characterized in that: The driver (5.3) is a motor assembly or an electromagnet having a drive shaft structure, the drive shaft of the driver (5.3) directly or indirectly cooperates with the switch component (5.1), and the drive shaft of the driver (5.3) is provided with a transmission structure that indirectly cooperates with the switch component (5.1).

9. The breast pump according to claim 7, characterized in that: The switch component (5.1) is arranged in an inclined manner and is provided with a magnetic matching piece (5.2); the host (1) is provided with an inclined mounting position (1.1) arranged in an inclined manner toward the switch component (5.1); and the driver (5.3) is installed on the inclined mounting position (1.1); The switch component (5.1) is provided with an elastic connection sleeve (5.11), the elastic connection sleeve (5.11) is sleeved on the outside of the three-way piece (3.1) of the milk suction piece (3), the elastic connection sleeve (5.11) is provided with a ventilation port (5.12) connected to the milk suction channel (3.2), the milk bowl (2) is provided with a first connection end group (2.1) corresponding to the ventilation port (5.12), the milk bowl (2) is provided with a first positioning portion (2.2), and a limit block (2.3) is provided inside the milk bowl (2); The milk sucking piece (3) is detachably mounted on the milk bowl (2), the milk sucking piece (3) is assembled with the milk bowl (2), the switch component (5.1) of the three-way piece (3.1) abuts against the inner side of the first positioning portion (2.2), the three-way piece (3.1) is limited on the inner side of the limit block (2.3), and the first connection end group (2.1) and the ventilation port (5.12) are arranged correspondingly; When the breast pump (3) is in the milk pumping state, the vent port (5.12) is located above the highest liquid level of the milk pumping channel (3.2) to prevent milk in the milk pumping channel (3.2) from overflowing along the vent port (5.12).

10. The breast pump according to claim 9, characterized in that: The main machine (1) is provided with a second positioning portion (1.2) and a first positioning inclined portion (1.3) connected to the second positioning portion (1.2) on its outer side, the milk bowl (2) is provided with a second positioning inclined portion (2.4), the main machine (1) is provided with an air pressure regulating device (4) for regulating the internal air pressure of the milk suction channel (3.2), and the main machine (1) is provided with a second connection end group (1.4) connected to the air pressure regulating device (4); The milk bowl (2) is detachably mounted on the main unit (1), the main unit (1) and the milk bowl (2) are assembled, the outer side of the first positioning portion (2.2) of the milk bowl (2) abuts against the second positioning portion (1.2), and the second positioning inclined portion (2.4) abuts against the first positioning inclined portion (1.3); the first connection end group (2.1) and the second connection end group (1.4) are relatively plugged together; A sealing member (6) is provided between the first connection end group (2.1) and the second connection end group (1.4), and the sealing member (6) is sleeved on the outside of the first connection end group (2.1) or the second connection end group (1.4).

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