Magnetic drive system and breast pump

Abstract

Provided are a magnetic drive system and a breast pump, comprising: a flexible member (4); a flexible member mounting structure (34), wherein the flexible member (4) is disposed on the flexible member mounting structure (34), a connection between the flexible member (4) and the flexible member mounting structure (34) is a sealed connection, and an air hole (47) is provided on the flexible member mounting structure (34); a first magnetic member (41), which is disposed in the flexible member (4); and a second magnetic member (5), which is disposed opposite to the first magnetic member (41) and can alternate between an S pole and an N pole. By changing the traditional breast pumping form of a vacuum pump plus an electromagnetic valve into an electromagnetic breast pumping form, the second magnetic member (5) alternates between the S pole and the N pole to drive the flexible member (4) to deform, thereby generating a negative pressure for breast pumping. The elimination of the vacuum pump and the electromagnetic valve removes the root cause of noise generation, greatly reducing noise or even achieving "zero" noise, thereby eliminating the impact on the user's mood and improving comfort.

Description

Magnetic drive system and breast pump

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202411374186.7, filed on September 29, 2024, and entitled "A magnetic drive system and breast pump", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of breast pumps, and in particular to a magnetic drive system and a breast pump. BACKGROUND

[0004] A breast pump refers to a tool for expressing breast milk accumulated in mammary glands. It is generally used when a baby cannot directly suckle breast milk, or when a mother's nipples have problems, or when a mother still wants to breastfeed despite being at work.

[0005] In the prior art, when a traditional breast pump is used for breast pumping, the driving mode is mostly direct vacuum pumping by a vacuum pump to generate negative pressure or mechanical structure driving flexible film deformation to generate negative pressure, so as to generate suction force for breast pumping work. However, the above two methods generate a large amount of noise during work, which greatly affects the user's mood and is not comfortable. Therefore, there is an urgent need to invent a driving system to solve the problem of loud noise during breast pump work.

[0006] SUMMARY

[0007] Therefore, in order to solve the problems in the prior art, the present application provides a magnetic drive system, which comprises a flexible member.

[0008] Flexible member mounting structure

[0009] The flexible member is arranged on the flexible member mounting structure, and the connection between the flexible member and the flexible member mounting structure is sealed connection. The flexible member mounting structure is provided with an air hole.

[0010] First magnetic member, the first magnetic member is arranged in the flexible member

[0011] Second magnetic member, the second magnetic member is arranged opposite to the first magnetic member, and the second magnetic member can be alternately changed between S pole and N pole.

[0012] The present application provides a breast pump, which comprises the above-mentioned magnetic drive system.

[0013] Beneficial effects: the application changes the traditional breast pumping mode of vacuum pump plus electromagnetic valve to electromagnetic breast pumping mode, the second magnetic element alternately changes between S pole and N pole, thereby driving the flexible element to deform, thereby generating negative pressure for breast pumping, the vacuum pump and electromagnetic valve are cancelled, the noise generation source is eliminated, the noise is greatly reduced even to "zero" noise, the influence on the mother's emotion is eliminated, and the comfort is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0015] Fig. 1 is a schematic diagram of the overall structure of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0016] Fig. 2 is an exploded view of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0017] Fig. 3 is a schematic diagram of the assembly structure of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0018] Fig. 4 is a schematic diagram of the cross-sectional structure of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0019] Fig. 5 is an enlarged view of A in Fig. 4 according to the present application;

[0020] Fig. 6 is a schematic diagram of the connecting piece structure of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0021] Fig. 7 is a schematic diagram of the milk collection cover structure of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0022] Fig. 8 is a schematic diagram of the flexible element structure of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0023] Fig. 9 is a schematic diagram of the internal structure of the flexible element of the breast pump driven by magnetic force to generate negative pressure according to the present application;

[0024] Fig. 10 is a control system structure diagram of the wearable breast pump driven by magnetic force to generate negative pressure according to the present application;

[0025] Fig. 11 is a control method flow chart of the wearable breast pump driven by magnetic force to generate negative pressure according to the present application;

[0026] In the figure: 1, the first shell; 11, the horn cover; 111, the containing cavity; 112, the milk collection cavity; 12, the milk collection cover; 121, the mounting part; 122, the convex ring; 123, the assembly groove; 124, the through hole; 125, the air groove; 126, the first quick release structure; 127, the liquid outlet; 2, the second shell; 21, the first half shell; 211, the key; 212, the charging port; 22, the second half shell; 221, the second quick release structure; 3, the connecting piece; 31, the mounting cylinder; 311, the limiting piece; 32, the first connecting pipe; 33, the second connecting pipe; 34, the flexible piece mounting structure; 341, the first hook edge; 4, the flexible piece; 4a, the assembly part; 4b, the deformation part; 41, the first magnetic force piece; 42, the second hook edge; 43, the annular groove; 44, the protrusion; 45, the third magnetic force piece; 46, the wave trough; 47, the air hole; 5, the second magnetic force piece; 6, the control board; 7, the power supply device; 8, the one-way valve.

[0027] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the accompanying drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0030] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" throughout the text includes three schemes, taking A and / or B as an example, including A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope of the present application.

[0031] As shown in FIGS. 1-9, the embodiment of the present application provides a breast pump driven by magnetic force to generate negative pressure, comprising a horn cover 11, the horn cover 11 forms a containing cavity 111, the containing cavity 111 can be closely attached to and at least partially contain the breast, forming a sealed cavity;

[0032] A flexible member 4 is provided with a first magnetic member 41, the flexible member 4 is at least partially communicated with the sealed cavity and forms part of the cavity wall of the sealed cavity;

[0033] A second magnetic member 5 is provided opposite to the first magnetic member 41, the second magnetic member 5 drives the first magnetic member 41 to move by magnetic force and drives the flexible member 4 to deform, so that the sealed cavity generates negative pressure.

[0034] In the embodiment, the inner wall of the horn cover 11 can be attached to the breast of the user, and when the breast of the user is attached to the inner wall of the horn cover 11, the sealed cavity formed by the horn cover 11 and the flexible member 4 is in a sealed state;

[0035] The first magnetic member 41 is provided opposite to the second magnetic member 5, and the positions of the first magnetic member 41 and the second magnetic member 5 can be exchanged, it should be noted that the magnetic member here not only refers to the component with magnetic force, but also the material that can be guided to move by magnetic force;

[0036] In other embodiments, the first magnetic member 41 includes but is not limited to a permanent magnet, the shape of the first magnetic member 41 can be ring-shaped or block-shaped or strip-shaped, the second magnetic member 5 is an electromagnetic coil, and the shape of the second magnetic member 5 is ring-shaped or block-shaped or strip-shaped;

[0037] In operation, first, the inner wall of the horn cover 11 is attached to the breast of the user, and then the second magnetic member 5 is started to generate magnetic force to drive the first magnetic member 41 to move, that is, when the magnetic poles of the second magnetic member 5 and the first magnetic member 41 are different, the first magnetic member 41 and the second magnetic member 5 generate magnetic attraction force, which drives the flexible member 4 to deform under the action of the magnetic attraction force, at this time, negative pressure is generated inside the sealed cavity, and at this time, the horn cover 11 is matched to generate pressure on the breast of the user to express the breast milk; when the magnetic poles of the second magnetic member 5 and the first magnetic member 41 are the same, the first magnetic member 41 and the second magnetic member 5 generate repulsion force, which drives the flexible member 4 to reset at this time, and the negative pressure inside the sealed cavity disappears at this time;

[0038] The present application changes the traditional vacuum pump and electromagnetic valve breast pumping form to electromagnetic breast pumping form, which not only greatly reduces the weight of the breast pump and is easy to carry, but also eliminates the noise source by canceling the vacuum pump and electromagnetic valve, greatly reduces the noise to even "zero" noise, eliminates the influence on the mood of the mother, and improves the comfort;

[0039] In addition, the application cancels the use of magnetic attraction of components such as vacuum pumps and electromagnetic valves, reduces the assembly components (vacuum pumps, electromagnetic valves, sealing rings and other parts), and effectively reduces the cost.

[0040] In one embodiment, the flexible member 4 further comprises at least one third magnetic member 45, and the third magnetic member 45 surrounds the periphery of the first magnetic member 41.

[0041] In this embodiment, by adding a pre-buried third magnetic member 45 inside the flexible member 4, the magnetic property can be further improved, thereby achieving the effects of improving efficiency and reducing energy loss, wherein the third magnetic member 45 is a neodymium magnet.

[0042] The third magnetic member 45 is arranged in a ring shape, and when the number of third magnetic members 45 is two or more, the diameters of the third magnetic members 45 increase from inside to outside along the radial direction of the flexible member 4.

[0043] In one embodiment, the closed cavity is connected to a milk collection component, which is used to collect and store breast milk.

[0044] In this embodiment, any container that can collect and store breast milk can be considered as a milk collection component, such as a feeding bottle or a bowl-shaped container.

[0045] In one embodiment, the milk collection component comprises a milk collection cover 12, and the milk collection cover 12 and the horn cover 11 form a first shell 1, and the first shell 1 has a milk collection cavity 112 inside, and the closed end of the horn cover 11 extends into the milk collection cavity 112.

[0046] In this embodiment, the connection between the horn cover 11 and the milk collection cover 12 is a sealed connection, the milk collection cover 12 is semi-spherical, and the opening edge of the milk collection cover 12 is provided with a liquid outlet 127, which is used to pour out the breast milk after the milk suction is completed.

[0047] In one embodiment, a second shell 2 is further included, and the second magnetic member 5 is fixed to the second shell 2, and the second magnetic member 5 can be alternately switched between S and N poles.

[0048] In this embodiment, by allowing the second magnetic member 5 to be alternately switched between S and N poles, the flexible member 4 can be driven to realize reciprocating motion of deformation and resetting, effectively forming stable "suction" and "release" functions, so that the breast pump can realize a continuous and stable milk suction process.

[0049] Specifically, taking the first magnetic force piece 41 as an S pole as an example, when the magnetic pole of the second magnetic force piece 5 is an N pole, the first magnetic force piece 41 and the second magnetic force piece 5 generate magnetic attraction force, so that the flexible piece 4 is deformed, and negative pressure is generated inside the sealing cavity, realizing the milking operation; when the magnetic pole of the second magnetic force piece 5 is an S pole, the first magnetic force piece 41 and the second magnetic force piece 5 generate repulsion force, which pushes the flexible piece 4 to reset, and the negative pressure inside the cavity disappears.

[0050] The vacuum pump has a delay in generating negative pressure conduction, and the efficiency can only be improved by the original material resilience. The air at the flexible piece 4 needs to be pumped out to correspondingly generate negative pressure on the human body. The magnetic attraction method can instantaneously change the direction and strength of the magnetic field, and the repulsion force can drive the flexible piece 4 to quickly reset, thereby reducing the delay and greatly improving the milking efficiency.

[0051] In one embodiment, the connecting piece 3 is further provided, the horn cover 11 and the flexible piece 4 form a sealed cavity through the connecting piece 3, the connecting piece 3 is a hollow structure, one end of the connecting piece 3 is provided with an opening, and the closed end of the horn cover 11 is connected with the opening end of the connecting piece 3.

[0052] In the embodiment, the connecting piece 3 includes but is not limited to a three-way valve, the connection positions of the horn cover 11 and the flexible piece 4 with the connecting piece 3 are detachable connection, and the connection positions are sealed connection.

[0053] In one embodiment, the connecting piece 3 is further communicated with the milk collecting part, and a one-way valve 8 is arranged between the connecting piece 3 and the milk collecting part.

[0054] In the embodiment, the one-way valve 8 is arranged, so that when negative pressure is generated in the sealed cavity, the backflow of the breast milk in the milk collecting part to the sealed cavity is prevented. The one-way valve 8 is a duckbill valve. Specifically, when negative pressure is generated in the sealed cavity, the internal pressure of the sealed cavity is less than the external pressure, so that the one-way valve 8 is deformed, and the one-way valve 8 is closed. After the one-way valve 8 is closed, the gas leakage is also prevented, the air tightness is increased, and the milking effect is improved. When the negative pressure disappears, the one-way valve 8 is restored to be opened, and the expressed breast milk flows into the milk collecting cover 12 from the one-way valve 8.

[0055] In one embodiment, the connecting piece 3 is provided with a flexible piece mounting structure 34, the flexible piece mounting structure 34 is communicated with the connecting piece 3, and the flexible piece 4 is arranged in the flexible piece mounting structure 34.

[0056] In the embodiment, the flexible member mounting structure 34 is a suction bowl, and the flexible member mounting structure 34 includes structures of different shapes, such as a circular shape, a square shape, or a planar structure, as long as the flexible member 4 can be fixed, and the flexible member mounting structure 34 is within the scope of the flexible member mounting structure 34. The edge of the flexible member 4 is connected to the edge of the flexible member mounting structure 34 in a sealed or interference manner, so that the inside of the flexible member mounting structure 34 is in a relatively sealed state. Optionally, the shape of the flexible member 4 matches the flexible member mounting structure 34.

[0057] The bottom of the flexible member mounting structure 34 is provided with an air hole 47, which communicates the inside of the flexible member mounting structure 34 with the connecting member 3.

[0058] In one embodiment, the flexible member mounting structure 34 and the flexible member 4 are mutually attached.

[0059] In the embodiment, the flexible member mounting structure 34 and the flexible member 4 are mutually attached, so that there is no gap between the flexible member mounting structure 34 and the flexible member 4. When performing the breast pumping operation, if the breast milk is accidentally sucked into the flexible member mounting structure 34, the breast milk sucked into the flexible member mounting structure 34 will be discharged in time when the flexible member 4 rebounds, so that the breast milk will not be left in the flexible member mounting structure 34.

[0060] In one embodiment, the inner wall of the breast collecting cover 12 is provided with a convex ring 122, and the breast collecting cover 12 is connected to the flexible member mounting structure 34 through the convex ring 122. The convex ring 122 extends from the opening of the flexible member mounting structure 34 to the inside of the flexible member mounting structure 34, and the convex ring 122 and the flexible member mounting structure 34 clamp the flexible member 4.

[0061] In the embodiment, the shape of the convex ring 122 is consistent with the bowl opening shape of the flexible member mounting structure 34, and one side of the convex ring 122 forms an assembly groove 123 with the inner wall of the breast collecting cover 12. When the flexible member 4 is installed in the flexible member mounting structure 34, the flexible member mounting structure 34 with the installed flexible member 4 is inserted into the assembly groove 123. At this time, the convex ring 122 is inserted into the flexible member mounting structure 34, and the assembly is completed. The convex ring 122 also has a positioning function at this time.

[0062] In addition, when the distance between the outer side wall of the convex ring 122 and the inner wall of the flexible piece mounting structure 34 is greater than the thickness of the flexible piece 4, if the flexible piece 4 deforms, the convex ring 122 can improve the connection strength of the connection between the flexible piece 4 and the flexible piece mounting structure 34, preventing the connection from being weakened due to the deformation of the flexible piece 4. When the distance between the outer side wall of the convex ring 122 and the inner wall of the flexible piece mounting structure 34 is slightly smaller than the thickness of the flexible piece 4, in addition to being able to increase the connection strength of the connection between the flexible piece 4 and the flexible piece mounting structure 34, the convex ring 122 and the flexible piece mounting structure 34 can clamp the flexible piece 4, forming an interference fit, so that the flexible piece 4 is tightly attached to the inner wall of the flexible piece mounting structure 34, and the sealing effect can be further improved.

[0063] In an embodiment, the milk collection cover 12 is provided with a mounting portion 121, which is provided as a clamping groove or a magnetic attraction structure. The milk collection cover 12 is detachably connected to the second shell 2 through the mounting portion 121.

[0064] In an embodiment, a through hole 124 is formed on the surface of the milk collection cover 12, which communicates with the cavity formed by the milk collection cover 12 and the flexible piece 4.

[0065] In this embodiment, the through hole 124 can make the air pressure in the cavity formed by the milk collection cover 12 and the flexible piece 4 consistent with the atmospheric pressure, so that the flexible piece 4 can reset.

[0066] In an embodiment, a gas groove 125 is formed on the surface of the milk collection cover 12, which communicates with the through hole 124.

[0067] In this embodiment, when the through hole 124 is arranged on the mounting portion 121, the interior of the milk collection cover 12 can still communicate with the outside through the gas groove 125, so that the air pressure in the cavity formed by the milk collection cover 12 and the flexible piece 4 is consistent with the atmospheric pressure and is not affected by the second shell 2.

[0068] In an embodiment, the second magnetic force piece 5 is controlled by a control mechanism arranged in the second shell 2.

[0069] In this embodiment, the control mechanism can control the magnetic poles of the second magnetic force piece 5, so as to realize the effect of continuously changing between the S pole and the N pole of the second magnetic force piece 5.

[0070] In an embodiment, the control mechanism includes a control board 6 and a power supply device 7. The control board 6 is electrically connected to the second magnetic force piece 5, and the power supply device 7 is electrically connected to the control board 6.

[0071] In this embodiment, the power supply device 7 is a storage battery, and the number of storage batteries is one. In other embodiments, the number of storage batteries can be two or more. The power supply device 7 can supply power to the second magnetic force piece 5 and the control board 6.

[0072] Specifically, when the second magnetic force piece 5 is powered, the current can make the second magnetic force piece 5 generate a magnetic field, thereby generating a magnetic pole, and the direction and size of the current can be controlled through the control panel 6, thereby controlling the magnetic pole conversion of the second magnetic force piece 5 and the strength of the magnetic field;

[0073] More specifically, taking the first magnetic force piece 41 as an S pole as an example, when the current direction makes the magnetic pole of the second magnetic force piece 5 an N pole, the first magnetic force piece 41 and the second magnetic force piece 5 generate magnetic attraction, so that a negative pressure is generated inside the sealed cavity, thereby realizing the milking operation; when the current direction makes the magnetic pole of the second magnetic force piece 5 an S pole, the first magnetic force piece 41 and the second magnetic force piece 5 generate repulsion, which pushes the flexible piece 4 to reset in the direction away from the second shell 2, and the negative pressure inside the cavity disappears.

[0074] Wherein, by controlling the size of the current, and the current can be accurately controlled, thereby achieving the effect of accurately controlling the size of the magnetic field strength and the size of the suction force, and finally realizing the adjustment of the negative pressure, effectively improving the comfort.

[0075] In one embodiment, the second shell 2 includes a first half shell 21 and a second half shell 22, the first half shell 21 is detachably connected with the second half shell 22, and the lower end of the second half shell 22 is provided with a second quick release structure 221, and the lower end of the second half shell 22 is detachably installed on the mounting portion 121 through the quick release structure.

[0076] In this embodiment, the detachable connection of the first half shell 21 and the second half shell 22 and the detachable installation of the lower end of the second half shell 22 at the mounting portion 121 make the assembly and disassembly of the breast pump convenient and fast.

[0077] Wherein, the mounting portion 121 is provided with a first quick release structure 126 corresponding to the second quick release structure 221, when the first quick release structure 126 is a clamping hole, the second quick release structure 221 can be a buckle, and in addition, the first quick release structure 126 and the second quick release structure 221 can both be magnetic attraction pieces.

[0078] In one embodiment, the first half shell 21 is provided with a plurality of keys 211.

[0079] In this embodiment, different keys 211 can send different control instructions to the controller to achieve different functions.

[0080] Specifically, the keys 211 include a power on / off key, a gear key, a pause key and a mode switching key, wherein the power on / off key is used to control the start and stop of the breast pump, the gear key includes a "+" key for increasing the gear and a "-" key for decreasing the gear, the pause key is used to control the pause of the breast pump, the breast pump has a massage mode, a breast pumping mode, a stimulation mode and an automatic mode, and the mode switching key is used to switch the four modes of the breast pump.

[0081] In one embodiment, the milk collection cover 12 is transparent, and the outer surface of the milk collection cover 12 is provided with a plurality of scale lines.

[0082] In the embodiment, the milk collection cover 12 is transparent, so that the collection of breast milk and the internal cleaning can be observed at any time, facilitating timely cleaning and preventing bacterial growth.

[0083] In addition, the outer surface of the milk collection cover 12 is provided with a plurality of scale lines and different markings, so that the amount of expressed breast milk can be measured.

[0084] In one embodiment, the first half shell 21 is provided with a display screen, and the display screen is electrically connected with the control panel 6.

[0085] In the embodiment, the display screen can display pressure, power, charging status, time and gear information.

[0086] In one embodiment, the connecting piece 3 includes a mounting cylinder 31, a first connecting pipe 32 and a second connecting pipe 33, one end of the mounting cylinder 31 is provided with an opening, the opening end of the mounting cylinder 31 is detachably connected with the closed end of the horn cover 11, one side of the mounting cylinder 31 is provided with a gas hole 47 communicating with the flexible piece mounting structure 34 through the first connecting pipe 32, the other side is communicated with the milk collection cover 12 through the second connecting pipe 33, the one-way valve 8 is sleeved on the end of the second connecting pipe 33 away from the mounting cylinder 31, and the first connecting pipe 32 is located above the second connecting pipe 33.

[0087] In the embodiment, the connection between the opening end of the mounting cylinder 31 and the closed end of the horn cover 11 is sealed or interference fit, so as to realize the relative sealing of the connection, the cross-sectional shape of the mounting cylinder 31 is circular in the embodiment, and can be polygonal or other irregular shape in other embodiments, and the second connecting pipe 33 is provided, so that the breast milk in the mounting cylinder 31 can flow into the milk collection cover 12 for storage through the second connecting pipe 33.

[0088] In one embodiment, the connecting piece 3 is provided with a limiting piece 311, and the connecting piece 3 is limited from moving relative to the milk collection part by the limiting piece 311.

[0089] In the embodiment, the limiting member 311 is in a semicircular sheet shape, and there are at least two limiting members 311, which are respectively located on the two sides of the connecting member 3. When the connecting member 3 is assembled with the milk collecting cover 12, the limiting member 311 can limit and position the connecting member 3.

[0090] In one embodiment, the outer edge of the opening of the flexible member mounting structure 34 is provided with a first hook edge 341, the bowl wall of the flexible member mounting structure 34 and the first hook edge 341 form a hook structure, and the upper end of the hook structure is inclined toward the bottom of the milk collecting cover 12. The outer edge of the flexible member 4 is bent downward to form a ring-shaped groove 43, and the edge of the flexible member 4 is provided with a second hook edge 42 extending into the ring-shaped groove 43. When the first hook edge 341 is inserted into the ring-shaped groove 43, the first hook edge 341 and the second hook edge 42 are buckled.

[0091] In the embodiment, the second hook edge 42 is arranged at the opening of the ring-shaped groove 43 and forms a closed shape. When the first hook edge 341 is inserted into the ring-shaped groove 43, the second hook edge 42 can be buckled with the first hook edge 341 and is not easy to be separated. Under the action of the self elastic force of the flexible member 4 and the inclined hook structure, the flexible member 4 is pulled tight. In this way, the connection between the flexible member mounting structure 34 and the flexible member 4 is tightly connected, so that a better sealing effect is achieved.

[0092] The embodiment of the present application provides a flexible film for generating negative pressure by magnetic driving, which is the flexible member 4 in the breast pump driven by magnetic force to generate negative pressure, comprising: an assembly part 4a, the assembly part 4a is used for positioning and fixing the film body; a deformation part 4b, the deformation part 4b is integrally formed with the assembly part 4a, and the connection between the deformation part 4b and the assembly part 4a is a sealed connection, and the assembly part 4a is arranged at the edge of the deformation part 4b.

[0093] In the embodiment, the shape of the deformation part 4b is a circular sheet shape. Alternatively, the shape of the deformation part 4b can also be a polygonal shape and other irregular shapes. The assembly part 4a is annular and has a shape matching the deformation part 4b. The deformation part 4b and the assembly part 4a are integrally formed by injection molding. The deformation part 4b and the assembly part 4a form a bowl-shaped structure. The first magnetic member 41 is in a block shape and is located at the center of the deformation part 4b. The material of the assembly part 4a and the deformation part 4b is latex material. The edge of the assembly part 4a is provided with a groove structure, which is the ring-shaped groove 43. The film body is installed on the flexible member mounting structure 34 through the groove structure, so that the flexible film and the suction bowl can be quickly buckled, and the assembly is convenient. The groove structure is located on the outer side of the deformation part 4b, and the opening of the groove is downward.

[0094] The second hook edge 42 is arranged on the inner wall of the opening of the ring-shaped groove 43 and protrudes toward the deformation part 4b, and the second hook edge 42 is located on the side wall of the ring-shaped groove 43 away from the deformation part 4b.

[0095] By inlaying the first magnetic force piece 41 in the deformation part 4b, the deformation part 4b can be driven by magnetic force to achieve the effect of deformation, without using a vacuum pump or mechanical structure to drive, thus preventing noise from being generated at the source and affecting the user's mood.

[0096] In one embodiment, the third magnetic force piece 45 is inlaid in the deformation part 4b and located at the periphery of the first magnetic force piece 41.

[0097] In the embodiment, when there are multiple third magnetic force pieces 45, the diameters of the third magnetic force pieces 45 increase in turn from inside to outside along the radial direction of the deformation part 4b.

[0098] In one embodiment, the cross-sectional shape of the deformation part 4b is wavy.

[0099] In the embodiment, by arranging the deformation part 4b to be wavy, the resilience of the deformation part 4b can be increased, and the third magnetic force piece 45 is arranged in the wave trough 46 of the deformation part 4b. Optionally, the cross-section of the third magnetic force piece 45 is arranged to be arc-shaped, so that the third magnetic force piece 45 is adapted to the wave trough 46 of the deformation part 4b.

[0100] The forming process of the flexible film assembly part 4a (i.e., the flexible part 4) is as follows:

[0101] First, the flexible film assembly part 4a is integrally formed by injection molding;

[0102] Then, the first magnetic force piece 41 assembly part 4a and the third magnetic force piece 45 assembly part 4a are inlaid in the deformation part 4b assembly part 4a: the first magnetic force piece 41 assembly part 4a and the third magnetic force piece 45 assembly part 4a are formed at the suction cup diaphragm by sleeving, at this time the neodymium alloy at the flexible film assembly part 4a does not have magnetism, after the sleeving forming is completed, the flexible film assembly part 4a (with the first magnetic force piece 41 assembly part 4a and the third magnetic force piece 45 assembly part 4a built-in) is placed in a fixed position in a jig to be not free to move, the suction cup diaphragm assembly (with the first magnetic force piece 41 assembly part 4a and the third magnetic force piece 45 assembly part 4a built-in) placed in the jig is placed into a magnetizing machine for magnetizing, and then the flexible film assembly part 4a of the application is obtained.

[0103] The specific steps are as follows,

[0104] S1, clean the surface of the neodymium alloy (not magnetized) of oil stains and dust;

[0105] S2, apply a treatment agent that can bond metal and silica gel to the surface of the neodymium alloy, and subsequent drying treatment needs to be performed according to the instructions of the treatment agent;

[0106] S3, after the treatment is completed, the neodymium alloy is placed into a mold for sleeving and forming a silica gel base;

[0107] S4, the completed base assembly is cleaned to remove surface oil and dust;

[0108] S5, the coating agent is dried according to the instructions of the coating agent;

[0109] S6, the processed base assembly is placed in a mold and re-wrapped with a flexible film to form a semi-finished flexible film (with a neodymium alloy);

[0110] S7, the obtained semi-finished flexible film (with a neodymium alloy) is placed in a magnetizing jig in sequence so that the semi-finished flexible film (with a neodymium alloy) does not move randomly during magnetizing, and then placed in a magnetizing machine for magnetizing, thereby obtaining a flexible film with magnetism.

[0111] In one embodiment, the flexible member 4 is provided with a protrusion 44, and the protrusion 44 is located on the side wall of the assembly part 4a away from the annular groove 43.

[0112] In this embodiment, after the convex ring 122 is assembled with the suction cup, the protrusion 44 and the side wall of the convex ring 122 can also form an interference fit, improving the sealing performance of the connection.

[0113] In one embodiment, the first magnetic member 41 and the third magnetic member 45 are both neodymium magnets.

[0114] In this embodiment, the neodymium magnet is a neodymium alloy after magnetization.

[0115] The application provides a magnetic driving system composed of the components in the above-mentioned embodiment of the breast pump driven by magnetic force to generate negative pressure, which comprises:

[0116] The flexible member 4;

[0117] The flexible member installation structure 34;

[0118] The flexible member 4 is arranged on the flexible member installation structure 34, and the connection between the flexible member 4 and the flexible member installation structure 34 is a sealed connection; the flexible member installation structure 34 is provided with an air hole 47;

[0119] The first magnetic member 41 is arranged in the flexible member 4;

[0120] The second magnetic member 5 is arranged opposite to the first magnetic member 41, and the second magnetic member 5 can be alternately switched between S-pole and N-pole.

[0121] The application changes the traditional breast pumping mode of vacuum pump plus electromagnetic valve to electromagnetic breast pumping mode, and the second magnetic force piece alternately changes between S pole and N pole, so as to drive the flexible piece to deform, thereby generating negative pressure for breast pumping. The vacuum pump and electromagnetic valve are cancelled, the noise generation source is eliminated, the noise is greatly reduced to even "zero" noise, the influence on the mood of the mother is eliminated, and the comfort is improved.

[0122] In one embodiment, the magnetic force of the first magnetic force piece 41 and the second magnetic force piece 5 (i.e. electromagnetic coil) can be calculated according to the design requirements, and the specific method is as follows:

[0123] Pressure = force / force area, i.e. P = F / S, F = P*S;

[0124] From the conversion between air pressure and force, it can be known that 1 pa = 1 N / m2, in addition, 1 millimeter of mercury (mmHg) = 133.3223684 pascal (Pa);

[0125] Therefore, after the area of the flexible piece mounting structure 34 is calculated, the force required for the flexible piece 4 of the flexible piece mounting structure 34 to pull upward can be obtained by substituting the formula.

[0126] From the Maxwell electromagnetic attraction calculation formula,

[0127] Formula one: electromagnetic attraction F = B 2 *S / 2*μ 0 = φ2 / 2*μ 0 *S

[0128] In the formula, B is the magnetic induction intensity (T), S is the magnetic path cross-sectional area (m 2 ), φ is the magnetic flux passing through the cross section (Wb), and μ 0 is the vacuum permeability (4π*10^-7 Wb / A·m).

[0129] Without considering the magnetic leakage loss and the connection air gap loss, only considering the deformation activity stroke of the flexible piece mounting structure 34 as the main air gap, at this time the magnetic induction intensity B at the built-in magnetic component of the flexible piece mounting structure 34 is:

[0130] Formula two: B = N*U*μ 0 / R*g = N*I*μ 0 / g

[0131] In the formula, N is the number of turns; I is the current intensity (A); U is the power voltage (V); R is the winding coil resistance (Ω); and g is the air gap width (m) (i.e. the distance from the built-in magnetic component of the flexible piece mounting structure 34 to the coil cross section).

[0132] Substituting formula two into formula one can obtain:

[0133] Formula three: electromagnetic attraction F = (N*I)2*μ 0 *S / 2*g2

[0134] The area of the first magnetic force member 41 can be determined by the above design, and is the same as the cross-sectional area S of the coil magnetic circuit. Meanwhile, the distance g of the cross section of the first magnetic force member 41 to the second magnetic force member 5 can be calculated. The number of turns N and the coil current I can be used as debugging values. N*I is proportional to F, so that F is greater than the upward force of the flexible member 4, thereby meeting the requirement of the negative pressure.

[0135] The embodiment of the present application provides a control method of the breast pump driven by the magnetic force to generate the negative pressure in the above-mentioned embodiment, which comprises the following steps:

[0136] S1, a horn cover 11 is arranged, so that the horn cover 11 forms a first cavity, so that the first cavity can be closely attached to and at least partially accommodate the breast, thereby forming a sealed cavity;

[0137] S2, a flexible member 4 is arranged, and the first magnetic force member 41 is arranged on the flexible member 4. The flexible member 4 is at least partially communicated with the sealed cavity and forms a part of the cavity wall of the sealed cavity;

[0138] S3, a second magnetic force member 5 is arranged, the second magnetic force member 5 is arranged opposite to the first magnetic force member 41, the second magnetic force member 5 is used to control the movement of the first magnetic force member 41, thereby driving the flexible member 4 to deform, so that the sealed cavity forms the negative pressure to force the breast to lactate.

[0139] In the embodiment, the traditional vacuum pump and the electromagnetic valve are changed into the electromagnetic type of breast pump, which greatly reduces the weight of the breast pump and is easy to carry. Meanwhile, the vacuum pump and the electromagnetic valve are cancelled, the second magnetic force member 5 is used to control the movement of the first magnetic force member 41, thereby driving the flexible member 4 to deform, so that the sealed cavity forms the negative pressure to force the breast to lactate. The source of the noise is eliminated, the noise is greatly reduced or even reaches “zero” noise, the influence on the mood of the mother is eliminated, and the comfort is improved.

[0140] In one embodiment, in the step of arranging the second magnetic force member 5 opposite to the first magnetic force member 41, and using the second magnetic force member 5 to control the movement of the first magnetic force member 41, thereby driving the flexible member 4 to deform, the step further comprises the following steps:

[0141] The second magnetic force member 5 is controlled to alternately change between the S pole and the N pole, so that the first magnetic force member 41 drives the flexible member 4 to reciprocate.

[0142] In one embodiment, in the step of arranging a horn cover 11, so that the horn cover 11 forms a first cavity, so that the first cavity can accommodate and closely attach to the breast, thereby forming a sealed cavity, the step further comprises the following steps:

[0143] The horn cover 11 is connected to a connecting piece 3, the connecting piece 3 is hollow inside, and one end of the connecting piece 3 is provided with an opening, and the closed end of the horn cover 11 is connected to the opening end of the connecting piece 3;

[0144] A suction cup is arranged on the connecting piece 3, and the inside of the suction cup is communicated with the connecting piece 3;

[0145] The flexible piece 4 is arranged in the suction cup, and the horn cover 11 and the flexible piece 4 form a closed cavity through the connecting piece 3.

[0146] In one embodiment, the second magnetic force piece 5 is arranged opposite to the first magnetic force piece 41, the movement of the first magnetic force piece 41 is controlled by the second magnetic force piece 5, and the flexible piece 4 is deformed, so that in the step of making the horn cover 11 adhere to the breast, the closed cavity forms negative pressure by the deformation of the flexible piece 4 to force the breast to secrete milk,

[0147] Further comprising the following steps:

[0148] The second magnetic force piece 5 is fixed in the second shell 2, so that the second magnetic force piece 5 is connected to a control mechanism, and the control mechanism is arranged in the second shell 2.

[0149] As shown in FIG. 10, the embodiment of the application provides a kind of circuit control system of negative pressure generated by magnetic force driven breast pump, which is used to the circuit control of the breast pump control method of negative pressure generated by magnetic force driven in any of the above, comprising:

[0150] MCU control module, MCU control module is used to receive signal and send signal;

[0151] Interactive control module, the interactive control module receives the key 211 operation signal of user, and sends the operation signal to MCU control module;

[0152] Voltage and current control module, voltage and current control module is used to receive the control signal of MCU control module, controls the voltage and current size of electromagnetic coil, reaches different suction force gear, and sends suction force gear signal back to MCU control module.

[0153] In the embodiment, after user carries out key 211 operation, interactive control module will send corresponding key 211 signal to MCU control module, MCU control module is used to receive the signal of interactive control module, and sends control signal to voltage and current control module, voltage and current control module receives the control signal of MCU control module, and according to the instruction of signal, controls the voltage and current size of electromagnetic coil, thereby controls electromagnetic force, thereby controls the deformation degree of flexible piece 4, and further controls different suction force to be generated.

[0154] In one embodiment, the power detection module is further included for real-time monitoring of the power of the power supply device 7 and sending data information to the MCU control module.

[0155] In the embodiment, the power detection module can real-time monitor the power of the battery inside the breast pump and transmit the monitoring data to the MCU control module.

[0156] In one embodiment, the charging detection module is further included for detecting the external charger and feeding back to the MCU control module.

[0157] In the embodiment, when the battery of the breast pump is out of power, if it is charged, the charging detection module detects the charger and real-time monitors the charging state.

[0158] In one embodiment, the display module is further included for receiving the signals sent by the voltage and current control module, the power detection module and the charging detection module to the MCU control module.

[0159] In the embodiment, the voltage and current control module, the power detection module and the charging detection module send signals to the MCU control module, and then the MCU control module sends the signals to the display module, and the display module displays the data information on the display screen.

[0160] As shown in FIG. 11, the embodiment of the application provides a breast pump circuit control method for generating negative pressure by magnetic force, which is used for controlling the circuit control system of any one of the above, and the method comprises the following steps:

[0161] S1: power on, system initialization;

[0162] S2: the charging detection module detects whether the external charger is connected, and if the external charger is connected, transmits the charging state signal to the display module for display;

[0163] S3: the interactive control module judges whether there is a key 211 operation instruction, if there is the key 211 operation instruction, sends the operation instruction to the MCU control module, and if there is no key 211 operation instruction, automatically powers off;

[0164] S4: the MCU control module receives the instruction sent by the interactive control module, judges the instruction and sends the instruction to the voltage and current control module;

[0165] S5: the voltage and current control module receives the instruction, controls the voltage and current input into the electromagnetic coil, and thus controls the electromagnetic force to generate different suction forces.

[0166] In the embodiment, before operation, the system of the breast pump needs to be initialized first, after the initialization is completed, the user performs the key 211 operation, after the interactive control module judges that there is a key 211 operation instruction, the power button is pressed to turn on the system, through such setting, the breast pump can be prevented from starting due to accidental touch, after the system is turned on, the key 211 control can be performed, the instruction corresponding to the key 211 of the interactive control module is sent to the MCU control module, and then the MCU control module sends the instruction to the voltage and current control module, the voltage and current control module adjusts the voltage and current of the electromagnetic coil according to the instruction, controls the electromagnetic force, thereby controls the deformation degree of the flexible part 4, further controls different suction forces, and feeds back different suction force gears to the display module for display.

[0167] After the system is turned on, if the power button is pressed again, the breast pump is turned off.

[0168] In one embodiment, the key 211 operation instruction includes a mode switching key instruction, an increase gear instruction, a decrease gear instruction and a pause instruction.

[0169] In the embodiment, the mode switching key instruction, the increase gear instruction, the decrease gear instruction and the pause instruction correspond to the mode switching key, the "+" key for increasing the gear, the "-" key for decreasing the gear and the pause key of the breast pump, and the corresponding instruction can be issued by pressing the corresponding key.

[0170] In one embodiment, after the breast pump starts to work, the method further includes that the power detection module judges whether the voltage is lower than the minimum working voltage, if the voltage is lower than the minimum working voltage, the breast pump is automatically turned off, and if the voltage is higher than the minimum working voltage, the breast pump continues to work.

[0171] In the embodiment, the minimum working voltage is 3.3V, if the voltage is lower than 3.3V, the breast pump is automatically turned off, and if the voltage is higher than 3.3V, the breast pump continues to work.

[0172] In one embodiment, after the breast pump starts to work, the method further includes that the MCU control module judges whether the set continuous working time length is reached, if the set continuous working time length is reached, the breast pump is automatically turned off, and if the set continuous working time length is not reached, the breast pump continues to work.

[0173] In the embodiment, the set continuous working time length is 20 minutes, if the continuous working time reaches 20 minutes, the breast pump is automatically turned off, and if the continuous working time does not reach 20 minutes, the breast pump continues to work.

[0174] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, any equivalent structural transformation made according to the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A magnetic drive system, characterized by, The magnetic force driving system comprises: a flexible piece; a flexible piece mounting structure; the flexible piece is arranged on the flexible piece mounting structure, and the connection between the flexible piece and the flexible piece mounting structure is a sealed connection; the flexible piece mounting structure is provided with an air hole; a first magnetic force piece is arranged in the flexible piece; a second magnetic force piece is arranged opposite to the first magnetic force piece, and the second magnetic force piece can be alternately switched between S pole and N pole.

2. The magnetic drive system of claim 1, wherein, The air hole comprises an air outlet hole and an air inlet hole.

3. The magnetic drive system of claim 1, wherein, The second magnetic force piece is an electromagnetic coil, and the second magnetic force piece is controlled by a control mechanism and is electrically connected to the control mechanism.

4. The magnetic drive system of claim 3, wherein, The control mechanism comprises a control board and a power supply device, the control board is electrically connected to the second magnetic force piece, and the power supply device is electrically connected to the control board.

5. The magnetic drive system of claim 1, wherein, At least one third magnetic force piece is arranged in the flexible piece, and the third magnetic force piece surrounds the periphery of the first magnetic force piece.

6. The magnetic drive system of claim 5, wherein, The bottom cross section of the flexible piece is in a wave shape, and the third magnetic force piece is arranged at the wave trough of the flexible piece.

7. The magnetic drive system of claim 1, wherein, The flexible piece mounting structure is arranged as a suction bowl. The outer edge of the opening of the flexible piece mounting structure is provided with a first hook edge, the bowl wall of the flexible piece mounting structure and the first hook edge form a hook structure, the outer edge of the flexible piece is bent downward to form an annular groove, the edge of the flexible piece is provided with a second hook edge extending into the annular groove, and when the first hook edge is inserted into the annular groove, the first hook edge is buckled with the second hook edge.

8. The magnetic drive system of claim 5, wherein, The flexible piece is provided with a plurality of third magnetic force pieces at intervals. The third magnetic force piece is in a ring shape, and the diameters of the plurality of third magnetic force pieces increase from inside to outside along the radial direction of the flexible piece.

9. The magnetic drive system of claim 7, wherein, The bottom of the flexible piece mounting structure is in close contact with the bottom of the flexible piece.

10. A breast pump, characterized in that The magnetic force driving system comprises any one of claims 1-9.

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