Magnetic driving system and breast pump

Abstract

The invention discloses a magnetic driving system and a breast pump. The magnetic driving system comprises a flexible part; a flexible member mounting structure; the flexible part is arranged on the flexible part mounting structure, and the flexible part is in sealed connection with the flexible part mounting structure; an air hole is formed in the flexible part mounting structure; the first magnetic part is arranged in the flexible part; and the second magnetic part is arranged opposite to the first magnetic part, and the second magnetic part can be alternately switched between an S pole and an N pole. A traditional milk sucking mode of a vacuum pump and an electromagnetic valve is changed into an electromagnetic milk sucking mode, the second magnetic part is alternately switched between the S pole and the N pole, so that the flexible part is driven to deform, negative pressure is generated to suck milk, the vacuum pump and the electromagnetic valve are omitted, the generation root of noise is eliminated, and the milk sucking efficiency is improved. Noise is greatly reduced, even zero noise is achieved, the influence on mothers is eliminated, and comfort is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of breast pumps, and in particular to a magnetic drive system and a breast pump. Background Art

[0002] A breast pump is a tool used to squeeze out breast milk accumulated in the mammary glands. It is generally used when the baby cannot suck breast milk directly, or when the mother has nipple problems, or when she still wants to breastfeed despite working.

[0003] In the prior art, when a traditional breast pump is sucking milk, the driving method mostly adopts a vacuum pump to directly draw a vacuum to generate negative pressure or adopts a mechanical structure to drive the deformation of a flexible membrane to generate negative pressure, thereby generating suction to suck milk. However, the above two methods will generate a lot of noise during operation, which has a great impact on the user's mood and poor comfort. Therefore, it is urgent to invent a driving system to solve the problem of loud noise when the breast pump is working. Summary of the invention

[0004] Based on this, in order to solve the problems existing in the prior art, the present application provides a magnetic drive system, including a flexible member;

[0005] Flexible component installation structure;

[0006] 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; the flexible member mounting structure is provided with air holes;

[0007] a first magnetic member, wherein the first magnetic member is disposed in the flexible member;

[0008] The second magnetic member is arranged opposite to the first magnetic member, and the second magnetic member can alternately switch between the S pole and the N pole.

[0009] The present application provides a breast pump, comprising the above-mentioned magnetic drive system.

[0010] Beneficial effects: The present application changes the traditional milk-sucking mode of a vacuum pump plus a solenoid valve into an electromagnetic milk-sucking mode, and causes the flexible part to deform by alternating between the S pole and the N pole through the second magnetic part, thereby generating negative pressure for milk-sucking. The vacuum pump and the solenoid valve are eliminated, thereby eliminating the source of noise, greatly reducing the noise to even "zero" noise, eliminating the impact on the mother's emotions, and improving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the breast pump that generates negative pressure by magnetic drive according to the present invention;

[0013] Figure 2 An exploded view of a breast pump that generates negative pressure by magnetic drive according to the present invention;

[0014] Figure 3 It is a schematic diagram of the assembly structure of the breast pump driven by magnetic force to generate negative pressure according to the present invention;

[0015] Figure 4 It is a schematic cross-sectional structure diagram of a breast pump driven by magnetic force to generate negative pressure according to the present invention;

[0016] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0017] Figure 6 This is a schematic diagram of the structure of the connector of the breast pump that generates negative pressure by magnetic drive according to the present invention;

[0018] Figure 7 It is a schematic structural diagram of a breast-collecting shield of a breast pump that generates negative pressure by magnetic drive according to the present invention;

[0019] Figure 8 It is a schematic diagram of the structure of the flexible part of the breast pump driven by magnetic force to generate negative pressure according to the present invention;

[0020] Fig. 9 It is a schematic diagram of the internal structure of the flexible part of the breast pump driven by magnetic force to generate negative pressure according to the present invention;

[0021] Fig.10 This is a structural diagram of a control system of a wearable breast pump that generates negative pressure by magnetic drive according to the present invention;

[0022] Fig.11 This is a flow chart of a control method of a wearable breast pump that generates negative pressure by magnetic drive according to the present invention;

[0023] In the figure: 1. first shell; 11. speaker cover; 111. accommodating cavity; 112. breast collecting cavity; 12. breast collecting cover; 121. mounting portion; 122. convex ring; 123. assembly groove; 124. through hole; 125. air groove; 126. first quick-release structure; 127. liquid outlet; 2. second shell; 21. first half shell; 211. button; 212. charging port; 22. second half shell; 221. second quick-release structure; 3. connector; 31. Mounting tube; 311. Limiting member; 32. First connecting tube; 33. Second connecting tube; 34. Flexible member mounting structure; 341. First hook edge; 4. Flexible member; 4a. Assembly portion; 4b. Deformation portion; 41. First magnetic member; 42. Second hook edge; 43. Annular groove; 44. Protrusion; 45. Third magnetic member; 46. Valley; 47. Air hole; 5. Second magnetic member; 6. Control panel; 7. Power supply equipment; 8. One-way valve.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] like Figure 1-9As shown, the embodiment of the present application provides a breast pump that generates negative pressure by magnetic drive, including a horn cover 11, the horn cover 11 forms a receiving cavity 111, and the receiving cavity 111 can fit and at least partially receive the breast without gaps to form a closed cavity;

[0029] A flexible member 4, on which a first magnetic member 41 is disposed, and the flexible member 4 is at least partially connected to the closed cavity and forms a partial cavity wall of the closed cavity;

[0030] The second magnetic member 5 and the first magnetic member 41 are arranged opposite to the second magnetic member 5 . The second magnetic member 5 drives the first magnetic member 41 to move and drives the flexible member 4 to deform through magnetic force, so that negative pressure is generated in the closed cavity.

[0031] In this embodiment, the inner wall of the speaker cover 11 can fit the user's breast, and when the user's breast fits the inner wall of the speaker cover 11, the closed cavity formed by the speaker cover 11 and the flexible member 4 is in a sealed state;

[0032] The first magnetic member 41 and the second magnetic member 5 are arranged opposite to each other, and the positions of the first magnetic member 41 and the second magnetic member 5 can be relatively exchanged. It should be noted that the magnetic member here does not only refer to a component with magnetic force, but also any material that can be guided to move by magnetic force;

[0033] In other embodiments, the first magnetic member 41 includes but is not limited to a permanent magnet, and the shape of the first magnetic member 41 can be ring-shaped, block-shaped, or strip-shaped, and the second magnetic member 5 is an electromagnetic coil, and the shape of the second magnetic member 5 can be ring-shaped, block-shaped, or strip-shaped;

[0034] When working, first make the inner wall of the speaker cover 11 fit with the breast of the user, and then start the second magnetic piece 5, so that the second magnetic piece 5 generates magnetic force to drive the first magnetic piece 41 to move, that is, when the magnetic pole of the second magnetic piece 5 is different from the magnetic pole of the first magnetic piece 41, the first magnetic piece 41 and the second magnetic piece 5 generate magnetic attraction, under the action of the magnetic attraction, the flexible piece 4 will be driven to deform, at this time, negative pressure will be generated inside the closed cavity, at this time, with the speaker cover 11, pressure will be generated on the breast of the user to squeeze out breast milk; when the magnetic pole of the second magnetic piece 5 is the same as the magnetic pole of the first magnetic piece 41, the first magnetic piece 41 and the second magnetic piece 5 generate mutual repulsion, at this time, the flexible piece 4 will be driven to reset, and the negative pressure inside the sealed cavity disappears;

[0035] The present invention changes the traditional vacuum pump plus electromagnetic valve milk suction mode into an electromagnetic milk suction mode, which not only greatly reduces the weight of the breast pump and makes it easier to carry, but also eliminates the vacuum pump and the electromagnetic valve, eliminates the source of noise, greatly reduces the noise or even reaches "zero" noise, eliminates the impact on the mother's mood, and improves comfort;

[0036] In addition, the present application eliminates the vacuum pump, solenoid valve and other components and replaces them with magnetic suction, thereby reducing assembly components (vacuum pump, solenoid valve, sealing ring and other parts), and effectively reducing costs.

[0037] In one embodiment, at least one third magnetic member 45 is further disposed inside the flexible member 4 , and the third magnetic member 45 surrounds the periphery of the first magnetic member 41 .

[0038] In this embodiment, by adding a third magnetic member 45 embedded inside the flexible member 4, the magnetic property can be further improved, thereby achieving the effect of improving efficiency and reducing energy loss, wherein the third magnetic member 45 is a neodymium magnet;

[0039] The third magnetic member 45 is arranged in a ring shape. When the number of the third magnetic members 45 is two or more, the diameter of the third magnetic member 45 increases from the inside to the outside along the radius direction of the flexible member 4 .

[0040] In one embodiment, the sealed cavity is connected to a milk collecting component, and the milk collecting component is used to collect and store breast milk.

[0041] In this embodiment, any container that can collect and store breast milk can be regarded as a milk collecting component, such as a feeding bottle or a bowl-shaped container.

[0042] In one embodiment, the milk collecting component includes a milk collecting cover 12 , which together with the speaker cover 11 form a first shell 1 , wherein a milk collecting cavity 112 is provided inside the first shell 1 , and an end of the speaker cover 11 extends into the milk collecting cavity 112 .

[0043] In this embodiment, the connection between the speaker cover 11 and the breast collecting shield 12 is sealed. The breast collecting shield 12 is hemispherical and has a liquid outlet 127 at the opening edge thereof for pouring out breast milk after sucking.

[0044] In one embodiment, it further comprises a second shell 2, a second magnetic member 5 is fixed to the second shell 2, and the second magnetic member 5 can alternately switch between the S pole and the N pole.

[0045] In this embodiment, by making the second magnetic member 5 alternate between the S pole and the N pole, the flexible member 4 can be driven to achieve reciprocating movement of deformation and reset, effectively forming a stable "sucking" and "releasing" function, so that the breast pump can achieve a continuous and stable milk sucking process;

[0046] Specifically, taking the first magnetic member 41 as an S pole as an example, when the magnetic pole of the second magnetic member 5 is an N pole, the first magnetic member 41 and the second magnetic member 5 generate a magnetic attraction force, causing the flexible member 4 to deform, and causing a negative pressure to be generated inside the sealed cavity, thereby achieving a milking operation; when the magnetic pole of the second magnetic member 5 is an S pole, the first magnetic member 41 and the second magnetic member 5 generate a mutual repulsion force, pushing the flexible member 4 to reset, and the negative pressure inside the cavity disappears;

[0047] There is a delay in the conduction of negative pressure produced by the vacuum pump, and the efficiency can only be improved by relying on the original material rebound performance. The air in the shell and the flexible part 4 needs to be evacuated to generate the corresponding negative pressure on the human body. The use of magnetic suction can instantly change the direction of the magnetic field and the magnitude of the magnetic field strength. The mutual repulsive force can drive the flexible part 4 to reset quickly, which can reduce the delay and greatly improve the efficiency of milk suction.

[0048] In one embodiment, a connecting member 3 is further included, through which the speaker cover 11 and the flexible member 4 form a closed cavity, the interior of the connecting member 3 is a hollow structure, one end of the connecting member 3 is provided with an opening, and the closed end of the speaker cover 11 is connected to the open end of the connecting member 3.

[0049] In this embodiment, the connecting member 3 includes but is not limited to a three-way valve, and the connections between the horn cover 11, the flexible member 4 and the connecting member 3 are all detachable connections, and the connections are sealed.

[0050] In one embodiment, the connecting member 3 is also connected to the milk collecting component, and a one-way valve 8 is provided between the connecting member 3 and the milk collecting component.

[0051] In this embodiment, a one-way valve 8 is provided, so that when negative pressure is generated in the sealed cavity, the breast milk in the milk collecting component can be prevented from flowing back into the sealed cavity. The one-way valve 8 is a duckbill valve. Specifically, when negative pressure is generated in the sealed cavity, the air pressure inside the sealed cavity is lower than the external air pressure, which will cause the one-way valve 8 to deform and close. At the same time, after the one-way valve 8 is closed, gas leakage can be prevented, thereby increasing air tightness and improving the milk suction effect. When the negative pressure disappears, the one-way valve 8 will be restored to open, and the squeezed breast milk will flow from the one-way valve 8 into the breast collecting cover 12.

[0052] In one embodiment, the connecting member 3 is provided with a flexible member mounting structure 34 , the interior of the flexible member mounting structure 34 is communicated with the connecting member 3 , and the flexible member 4 is arranged in the flexible member mounting structure 34 .

[0053] In this embodiment, the flexible member mounting structure 34 is a suction bowl. The flexible member mounting structure 34 includes structures of different shapes, such as a circular, square or flat structure. As long as the flexible member 4 can be fixed, they are all included in the scope of the flexible member mounting structure 34 in this case. The edge of the flexible member 4 and the edge of the flexible member mounting structure 34 are sealed or interference connected, 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.

[0054] An air hole 47 is provided at the bottom of the flexible member installation structure 34 , and the interior of the flexible member installation structure 34 is connected to the connecting member 3 through the air hole 47 .

[0055] In one embodiment, the flexible member mounting structure 34 and the flexible member 4 are in contact with each other.

[0056] In this embodiment, the flexible member mounting structure 34 and the flexible member 4 are arranged to fit each other so that there is no gap between the assembly portion 4a of the flexible member mounting structure 34 and the assembly portion 4a of the flexible member 4. When the breast milk is accidentally sucked into the assembly portion 4a of the flexible member mounting structure 34 during the milk pumping operation, the breast milk sucked into the assembly portion 4a of the flexible member mounting structure 34 will be discharged in time when the assembly portion 4a of the flexible member 4 rebounds, so that the breast milk will not remain in the assembly portion 4a of the flexible member mounting structure 34.

[0057] In one embodiment, a convex ring 122 is provided on the inner wall of the breast collecting shield 12, and the breast collecting shield 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.

[0058] In this embodiment, the shape of the convex ring 122 is consistent with the bowl shape of the flexible member mounting structure 34. One side of the convex ring 122 forms an assembly groove 123 with the inner wall of the bra 12. When the flexible member 4 and the flexible member mounting structure 34 are installed, the flexible member mounting structure 34 with the flexible member 4 installed is inserted into the assembly groove 123. At this time, the convex ring 122 is inserted into the flexible member mounting structure 34 to complete the assembly. At this time, the convex ring 122 also has a positioning function;

[0059] In addition, when the distance between the outer wall of the convex ring 122 and the inner wall of the flexible component mounting structure 34 is greater than the thickness of the flexible component 4, if the flexible component 4 is deformed, the convex ring 122 can enhance the connection strength between the flexible component 4 and the flexible component mounting structure 34 to prevent the sealing of the connection from being reduced due to the deformation of the flexible component 4. When the distance between the outer wall of the convex ring 122 and the inner wall of the flexible component mounting structure 34 is slightly smaller than the thickness of the flexible component 4, in addition to increasing the connection strength between the flexible component 4 and the flexible component mounting structure 34, the convex ring 122 and the flexible component mounting structure 34 will clamp the flexible component 4 to form an interference fit, so that the flexible component 4 fits tightly against the inner wall of the flexible component mounting structure 34, and the sealing effect can be further enhanced.

[0060] In one embodiment, a mounting portion 121 is provided on the breast collecting shield 12 , and the mounting portion 121 is configured as a card slot or a magnetic attraction structure. The breast collecting shield 12 is detachably connected to the second shell 2 via the mounting portion 121 .

[0061] In one embodiment, a through hole 124 is opened on the surface of the breast collecting shield 12 , and the through hole 124 communicates with the breast collecting shield 12 and the cavity formed by the flexible member 4 .

[0062] In this embodiment, the provision of the through hole 124 can make the air pressure of the cavity formed by the breast shield 12 and the flexible member 4 consistent with the atmospheric pressure, so that the flexible member 4 can be reset.

[0063] In one embodiment, an air groove 125 is formed on the surface of the breast collecting shield 12 , and the air groove 125 is communicated with the through hole 124 .

[0064] In this embodiment, when the through hole 124 is provided on the mounting portion 121 , the interior of the breast collecting shield 12 can still be connected to the outside through the air groove 125 , so that the air pressure of the cavity formed by the breast collecting shield 12 and the flexible member 4 is consistent with the atmospheric pressure and is not affected by the second shell 2 .

[0065] In one embodiment, the second magnetic member 5 is controlled by a control mechanism, and the control mechanism is disposed in the second housing 2 .

[0066] In this embodiment, the magnetic pole of the second magnetic member 5 can be controlled by the control mechanism, so as to achieve the effect of the second magnetic member 5 continuously switching between the S pole and the N pole.

[0067] In one 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 member 5 , and the power supply device 7 is electrically connected to the control board 6 .

[0068] In this embodiment, the power supply device 7 is a battery, and the number of batteries is one. In other embodiments, the number of batteries may be two or more. The power supply device 7 may supply power to the second magnetic member 5 and the control board 6.

[0069] Specifically, when the second magnetic member 5 is powered, the current will cause the second magnetic member 5 to generate a magnetic field, thereby generating magnetic poles. The direction and magnitude of the current can be controlled by the control board 6, thereby controlling the magnetic pole conversion of the second magnetic member 5 and the strength of the magnetic field.

[0070] More specifically, taking the first magnetic member 41 as an example with an S pole, when the current direction makes the magnetic pole of the second magnetic member 5 an N pole, the first magnetic member 41 and the second magnetic member 5 generate a magnetic attraction force, so that a negative pressure is generated inside the sealed cavity, and the milking operation is realized; when the current direction makes the magnetic pole of the second magnetic member 5 an S pole, the first magnetic member 41 and the second magnetic member 5 generate a mutual repulsion force, pushing the flexible member 4 to reset away from the second shell 2, and the negative pressure inside the cavity disappears;

[0071] Among them, by controlling the size of the current, and the current can be precisely controlled, the effect of precisely controlling the size of the magnetic field strength and the size of the suction force can be achieved, and finally the negative pressure can be adjusted to effectively improve the comfort level.

[0072] 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 to the second half shell 22, and a second quick-release structure 221 is provided at the lower end of the second half shell 22. The lower end of the second half shell 22 is detachably installed on the mounting portion 121 through the quick-release structure.

[0073] In this embodiment, the first half shell 21 and the second half shell 22 are detachably connected, and the lower end of the second half shell 22 is detachably mounted on the mounting portion 121, so that the assembly and disassembly of the breast pump are convenient and quick;

[0074] 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 snap-on hole, the second quick-release structure 221 can be a snap buckle. In addition, both the first quick-release structure 126 and the second quick-release structure 221 can be magnetic components.

[0075] In one embodiment, the first half shell 21 is provided with a plurality of buttons 211 .

[0076] In this embodiment, different buttons 211 are provided to send different control instructions to the controller to achieve different functions;

[0077] Specifically, button 211 includes a power button, a gear button, a pause button and a mode switch button, wherein the power button is used to control the start and stop of the breast pump, the gear button includes a "+" key for increasing the gear and a "-" key for decreasing the gear, the pause button is used to control the breast pump to pause working, the breast pump of the present application has a massage mode, a milk suction mode, a stimulation mode and an automatic mode, and the mode switch button is used to switch the four modes of the breast pump.

[0078] In one embodiment, the breast collecting shield 12 is transparent, and a plurality of scale lines are arranged on the outer surface of the breast collecting shield 12 .

[0079] In this embodiment, the breast collecting cover 12 is set to be transparent, so that the breast milk collection and internal cleaning conditions can be observed at all times, which is convenient for timely cleaning and prevents bacterial growth;

[0080] In addition, the outer surface of the breast collecting shield 12 is provided with a plurality of scale lines and different markings, so that the amount of expressed breast milk can be measured.

[0081] In one embodiment, the first half shell 21 is provided with a display screen, and the display screen is electrically connected to the control board 6 .

[0082] In this embodiment, the display screen can display pressure, power, charging status, time and gear information.

[0083] In one embodiment, the connecting member 3 includes a mounting tube 31, a first connecting tube 32 and a second connecting tube 33. An opening is provided at one end of the mounting tube 31. The open end of the mounting tube 31 is detachably connected to the closed end of the horn cover 11. An air hole 47 is provided on one side of the mounting tube 31 to connect to the flexible member mounting structure 34 through the first connecting tube 32, and the other side is connected to the breast collecting cover 12 through the second connecting tube 33. The one-way valve 8 is sleeved on one end of the second connecting tube 33 away from the mounting tube 31, and the first connecting tube 32 is located above the second connecting tube 33.

[0084] In this embodiment, the connection between the open end of the mounting tube 31 and the closed end of the horn cover 11 is sealed or interference fit to achieve relative sealing of the connection. The cross-sectional shape of the mounting tube 31 is circular in this embodiment, and can be polygonal or other irregular shapes in other embodiments. The second connecting tube 33 is provided so that the breast milk in the mounting tube 31 can flow through the second connecting tube 33 to the breast collecting cover 12 for storage.

[0085] In one embodiment, a limiting member 311 is provided on the connecting member 3 , and the limiting member 311 limits the relative movement between the connecting member 3 and the milk collecting component.

[0086] In this embodiment, the limiting members 311 are in the shape of semicircular sheets, and there are at least two of them, which are respectively located on both sides of the connecting member 3. By setting the limiting members 311, the connecting member 3 can be limited and positioned when it is assembled with the breast shield 12.

[0087] In one embodiment, a first hook 341 is provided at the outer edge of the opening of the flexible member mounting structure 34, the bowl wall of the flexible member mounting structure 34 and the first hook 341 form a hook structure, and the upper end of the hook structure is inclined toward the bottom of the breast shield 12, the outer edge of the flexible member 4 is bent downward to form an annular groove 43, and a second hook 42 is provided at the edge of the flexible member 4 to extend to the inside of the annular groove 43, and when the first hook 341 is inserted into the annular groove 43, the first hook 341 is buckled with the second hook 42.

[0088] In this embodiment, the second hook edge 42 is arranged at the opening of the annular groove 43 to form a closed shape. During installation, it is only necessary to insert the first hook edge 341 into the annular groove 43, and the second hook edge 42 can be interlocked with the first hook edge 341 and is not easy to separate. Under the action of the elastic force of the flexible part 4 itself and the inclined hook structure, the flexible part 4 is tightened, so that the connection between the flexible part installation structure 34 and the flexible part 4 can be tightly connected, thereby achieving a better sealing effect.

[0089] The embodiment of the present application provides a flexible membrane for generating negative pressure by magnetic drive, and the flexible membrane is the flexible part 4 in the breast pump that generates negative pressure by magnetic drive, including: an assembly part 4a, the assembly part 4a is used to position and fix the membrane body; a deformation part 4b, the deformation part 4b and the assembly part 4a are integrally formed, and the connection between the deformation part 4b and the assembly part 4a is a sealed connection, and the assembly part 4a is arranged on the edge of the deformation part 4b.

[0090] In the present embodiment, the shape of the deformation portion 4b is a circular sheet. Optionally, the shape of the deformation portion 4b can also be a polygon or other irregular shapes. The assembly portion 4a is annular, and its shape matches the deformation portion 4b. The deformation portion 4b and the assembly portion 4a are integrally formed by injection molding. The deformation portion 4b and the assembly portion 4a form a bowl-shaped structure. The first magnetic part is block-shaped, and the first magnetic part is located at the center of the deformation portion 4b. The material of the assembly portion 4a and the deformation portion 4b is latex material. A groove structure is provided on the edge of the assembly portion 4a, and the groove structure is an annular groove 43. The membrane body is installed on the flexible member installation structure 34 through the groove structure, so that the flexible membrane can be quickly buckled with the suction bowl, and the assembly is convenient, wherein the groove structure is located on the outside of the deformation portion 4b, and the opening of the groove is downward;

[0091] The second hook edge 42 is disposed on the inner wall of the opening of the annular groove 43 and protrudes toward the deformation portion 4b, and the second hook edge 42 is located on the side wall of the annular groove 43 away from the deformation portion 4b;

[0092] By embedding the first magnetic part in the deformation part 4b, the deformation part 4b can be driven by magnetic force to achieve the deformation effect without using a vacuum pump or mechanical structure drive, thereby preventing the generation of noise from the source and not affecting the user's mood.

[0093] In one embodiment, the third magnetic member is embedded in the deformation portion 4b and is located outside the first magnetic member.

[0094] In this embodiment, when there are multiple third magnetic members, the diameters of the third magnetic members increase sequentially from the inside to the outside along the radial direction of the deformation portion 4b.

[0095] In one embodiment, the cross-section of the deformation portion 4b is wavy.

[0096] In this embodiment, the resilience of the deformation portion 4b can be increased by arranging the deformation portion 4b in a wave shape, wherein the third magnetic component is arranged at the trough 46 of the deformation portion 4b. Optionally, the cross-section of the third magnetic component is arranged in an arc shape, so that the third magnetic component can be adapted to the trough 46 of the deformation portion 4b.

[0097] The molding process of the flexible film (i.e., the flexible member 4) assembly portion 4a is as follows:

[0098] First, an integrally formed flexible membrane assembly portion 4a is obtained by injection molding;

[0099] Then, the first magnetic component assembly part 4a and the third magnetic component assembly part 4a are embedded in the deformation part 4b assembly part 4a: the first magnetic component assembly part 4a and the third magnetic component assembly part 4a are formed at the suction bowl diaphragm by a beer-in-beer method. At this time, the neodymium alloy at the flexible membrane assembly part 4a does not generate magnetism. After the beer-in-beer forming is completed, the flexible membrane assembly part 4a (with the first magnetic component assembly part 4a and the third magnetic component assembly part 4a built in) is placed in a fixed position in the jig so that it cannot move freely, and the suction bowl diaphragm assembly (with the first magnetic component assembly part 4a and the third magnetic component assembly part 4a built in) placed in the jig is placed in a magnetizing machine for magnetization, and then the flexible membrane assembly part 4a of the present application is obtained;

[0100] The specific steps are as follows:

[0101] S1. Clean the oil and dust on the surface of neodymium alloy (not magnetized);

[0102] S2. Apply a treatment agent for bonding metal and silicone to the surface of the neodymium alloy, and then dry it according to the instructions of the treatment agent;

[0103] S3, after the processing is completed, put it into the mold to cover the silicone base;

[0104] S4, the base assembly of the beer set is cleaned to remove oil and dust on the surface;

[0105] S5. Apply the treatment agent and dry it according to the instructions of the treatment agent;

[0106] S6, placing the processed base assembly into the mold and fitting it with the flexible film again to form a semi-finished flexible film (with built-in neodymium alloy);

[0107] S7. Place the obtained semi-finished flexible film (built-in neodymium alloy) into a magnetizing fixture in order so that the semi-finished suction bowl (built-in neodymium alloy) will not move randomly during the magnetizing process, and then place it into a magnetizing machine for magnetization to obtain a magnetic flexible film.

[0108] In one embodiment, a protrusion 44 is provided on the flexible member 4 , and the protrusion 44 is located on a side wall of the assembly portion 4 a close to the deformation portion 4 b and away from the annular groove 43 .

[0109] In this embodiment, after the convex ring 122 and the suction bowl are assembled, the protrusion 44 and the side wall of the convex ring 122 can also form an interference fit to improve the sealing of the connection.

[0110] In one embodiment, the first magnetic member and the third magnetic member are both neodymium magnets.

[0111] In this embodiment, the neodymium magnet is obtained by magnetizing a neodymium alloy.

[0112] The present application provides a magnetic drive system, which is composed of the components in the above-mentioned embodiment of a breast pump that generates negative pressure by magnetic drive, including:

[0113] Flexible member 4;

[0114] Flexible member mounting structure 34;

[0115] The flexible member 4 is arranged on the flexible member mounting structure 34, and the connection between the flexible member 4 and the flexible member mounting structure 34 is sealed; the flexible member mounting structure 34 is provided with an air hole 47;

[0116] A first magnetic member 41, the first magnetic member 41 is arranged in the flexible member 4;

[0117] The second magnetic member 5 is arranged opposite to the first magnetic member 41 , and the second magnetic member 5 can alternately switch between the S pole and the N pole.

[0118] The present application changes the traditional milk suction mode of vacuum pump plus solenoid valve into an electromagnetic milk suction mode, and causes the flexible part to deform by alternating between the S pole and the N pole through the second magnetic part, thereby generating negative pressure for milk suction. The vacuum pump and the solenoid valve are eliminated, the source of noise is eliminated, the noise is greatly reduced or even reaches "zero" noise, the impact on the mother's mood is eliminated, and comfort is improved.

[0119] In one embodiment, the magnitude of the magnetic force between the first magnetic member 41 and the second magnetic member 5 (ie, the electromagnetic coil) can be calculated according to design requirements, and the specific method is as follows:

[0120] Pressure = pressure / force area, that is, P = F / S, F = P*S;

[0121] From the conversion of air pressure and force, we can know that 1pa = 1N / m2. In addition, 1 mmHg = 133.3223684 Pascals.

[0122] It can be seen that after calculating the area of ​​the flexible member installation structure 34, the force required to pull the flexible member 4 of the flexible member installation structure 34 upward can be obtained by substituting it into the above formula.

[0123] According to Maxwell's electromagnetic attraction calculation formula,

[0124] Formula 1: Electromagnetic attraction F = B2*S / 2*μ 0 =φ2 / 2*μ 0 *S

[0125] Where: B is the magnetic induction intensity (T), S is the magnetic circuit cross-sectional area (m 2 ), φ is the magnetic flux passing through the cross section (Wb), μ 0 is the magnetic permeability of vacuum (4π*10^-7Wb / A·m).

[0126] Without considering the leakage magnetic loss and the connection air gap loss, only the deformation stroke of the flexible member installation structure 34 is considered as the main air gap. Then, the magnetic induction intensity B at the built-in magnetic component of the flexible member installation structure 34 is:

[0127] Formula 2: B = N*U*μ 0 / R*g=N*I*μ 0 / g

[0128] Wherein: N is the number of coil turns; I is the current intensity (A); U is the power supply voltage (V); R is the winding coil resistance (Ω); g is the air gap width (m) (i.e., the distance from the built-in magnetic component of the flexible component mounting structure 34 to the coil cross section).

[0129] Substituting formula 2 into formula 1, we get:

[0130] Formula 3: Electromagnetic attraction F = (N*I)2*μ 0 *S / 2*g2

[0131] Through the above design, the area of ​​the first magnetic part 41 can be determined, and it is the same as the cross-sectional area S of the coil magnetic circuit. At the same time, the distance g from the first magnetic part 41 to the cross-section of the second magnetic part 5 can also be calculated, wherein the number of turns N and the coil current I can be used as debugging values, N*I is proportional to F, and making F greater than the upward pulling force of the flexible part 4 can meet the required negative pressure requirement.

[0132] The present application provides a control method for a breast pump that generates negative pressure by magnetic drive according to the above embodiment, comprising the following steps:

[0133] S1. A speaker cover 11 is provided, so that the speaker cover 11 forms a first cavity, so that the first cavity can fit the breast without gap and at least partially accommodate the breast, forming a closed cavity;

[0134] S2, a flexible member 4 is provided, on which a first magnetic member 41 is provided, and the flexible member 4 is at least partially connected to the closed cavity and forms a part of the cavity wall of the closed cavity;

[0135] S3. Set the second magnetic member 5, and set the second magnetic member 5 opposite to the first magnetic member 41. Use the second magnetic member 5 to control the movement of the first magnetic member 41, thereby driving the flexible member 4 to deform, so that the closed cavity forms a negative pressure to force the breast to secrete milk.

[0136] In this embodiment, by changing the traditional milk suction mode of vacuum pump plus solenoid valve into electromagnetic milk suction mode, not only the weight of the breast pump is greatly reduced, but also it is easier to carry. At the same time, the vacuum pump and the solenoid valve are cancelled, and the second magnetic member 5 is used to control the movement of the first magnetic member 41, thereby driving the flexible member 4 to deform, so that the closed cavity forms negative pressure to force the breast to secrete milk, eliminating the source of noise, greatly reducing the noise or even reaching "zero" noise, eliminating the impact on the mother's mood, and improving comfort.

[0137] In one embodiment, in the step of arranging the second magnetic member 5 and the first magnetic member 41 relative to each other, and using the second magnetic member 5 to control the movement of the first magnetic member 41, thereby driving the flexible member 4 to deform, the following steps are also included:

[0138] The second magnetic member 5 is controlled to alternate between the S pole and the N pole, so that the first magnetic member 41 drives the flexible member 4 to generate a reciprocating motion.

[0139] In one embodiment, in the step of providing a speaker cover 11 so that the speaker cover 11 forms a first cavity, so that the first cavity can accommodate and fit the breast without gaps to form a closed cavity, the following steps are also included:

[0140] The speaker cover 11 is connected to a connecting piece 3, the interior of the connecting piece 3 is a hollow structure, one end of the connecting piece 3 is provided with an opening, and the closing end of the speaker cover 11 is connected to the opening end of the connecting piece 3;

[0141] A suction bowl is provided on the connecting member 3, and the interior of the suction bowl is connected to the connecting member 3;

[0142] The flexible member 4 is arranged in the suction bowl, and the speaker cover 11 and the flexible member 4 form a closed cavity through the connecting member 3 .

[0143] In one embodiment, the second magnetic member 5 is arranged opposite to the first magnetic member 41, and the second magnetic member 5 is used to control the movement of the first magnetic member 41, thereby driving the flexible member 4 to deform, so that when the horn cover 11 fits the breast, the closed cavity forms a negative pressure through the deformation of the flexible member 4 to force the breast to secrete milk.

[0144] The following steps are also included:

[0145] The second magnetic member 5 is fixed in the second shell 2 , and the second magnetic member 5 is connected to the control mechanism, and the control mechanism is arranged in the second shell 2 .

[0146] like Fig.10 As shown, the embodiment of the present application provides a magnetically driven breast pumping circuit control system for generating negative pressure, and the magnetically driven breast pumping circuit control method for generating negative pressure used in any of the above items performs circuit control, including:

[0147] MCU control module, the MCU control module is used to receive and send signals;

[0148] An interactive control module receives a user's key 211 operation signal and sends the operation signal to the MCU control module;

[0149] The voltage and current control module is used to receive the control signal from the MCU control module, control the voltage and current of the electromagnetic coil to achieve different suction gears, and transmit the suction gear signal back to the MCU control module.

[0150] In this embodiment, after the user operates the button 211, the interactive control module will send the corresponding button 211 signal to the MCU control module. The MCU control module is used to receive the signal of the interactive control module and send a control signal to the voltage and current control module. After the voltage and current control module receives the control signal of the MCU control module, it controls the voltage and current of the electromagnetic coil according to the instruction of the signal, thereby controlling the size of the electromagnetic force, thereby controlling the deformation degree of the flexible part 4, and then controlling the generation of different suction forces.

[0151] In one embodiment, a power detection module is also included, and the power detection module is used to monitor the power of the power supply device 7 in real time and send data information to the MCU control module.

[0152] In this embodiment, the power detection module can monitor the power level of the battery inside the breast pump in real time and transmit the monitoring data to the MCU control module.

[0153] In one embodiment, a charging detection module is also included, and the charging detection module is used to detect the external charger and feed back to the MCU control module.

[0154] In this embodiment, when the battery of the breast pump is out of power, if it is charged, the charging detection module will perform charger detection and monitor the charging status in real time.

[0155] In one embodiment, a display module is also included, and the display module is used to receive signals sent by the voltage and current control module, the power detection module, and the charging detection module to the MCU control module.

[0156] In this embodiment, the voltage and current control module, the power detection module, and the charging detection module send signals to the MCU control module, which then sends them to the display module. The display module displays the data information on the display screen.

[0157] like Fig.11 As shown, the embodiment of the present application provides a method for controlling a magnetically driven breast pumping circuit that generates negative pressure, which is used to control any of the above circuit control systems, and the method includes:

[0158] S1: power on, system initialization;

[0159] S2: The charging detection module detects whether an external charger is connected. If an external charger is connected, the charging status signal is transmitted to the display module for display;

[0160] S3: The interactive control module determines whether there is a key 211 operation instruction. If there is a key 211 operation instruction, the operation instruction is sent to the MCU control module. If there is no key 211 operation instruction, the machine is automatically shut down.

[0161] S4: The MCU control module receives the instruction sent by the interactive control module, judges the instruction and sends it to the voltage and current control module;

[0162] S5: After receiving the instruction, the voltage and current control module controls the voltage and current passed into the electromagnetic coil, thereby controlling the magnitude of the electromagnetic force to generate suction forces of different magnitudes.

[0163] In this embodiment, before the operation is performed, the system of the breast pump needs to be initialized first. After the initialization is completed, the user operates the key 211. After the interactive control module determines that there is an operation instruction of the key 211, the user presses the power button to turn on the system. By setting in this way, it is possible to prevent the breast pump from being started due to an 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 magnitude of the electromagnetic force, thereby controlling the deformation degree of the flexible member 4, and then controlling the generation of different suction forces, and feeding back different suction force gears to the display module for display;

[0164] Among them, after turning on the system, if you press the power button again, the breast pump will shut down.

[0165] In one embodiment, the key 211 operation instructions include a mode switching key instruction, an upshift instruction, a downshift instruction, and a pause instruction.

[0166] In this embodiment, the mode switching command, the gear up command, the gear down command and the pause command correspond to the mode switching button, the "+" key for increasing the gear, the "-" key for decreasing the gear and the pause button on the breast pump. The corresponding command can be issued by pressing the corresponding button.

[0167] In one embodiment, after the breast pump starts working, the method further includes a power detection module determining whether the voltage is lower than the minimum working voltage. If it is lower than the minimum working voltage, the breast pump automatically shuts down; if it is higher than the minimum working voltage, the breast pump continues to work.

[0168] In this embodiment, the minimum operating voltage is 3.3V. If it is lower than 3.3V, the breast pump will automatically shut down. If it is higher than 3.3V, the breast pump will continue to work.

[0169] In one embodiment, after the breast pump starts working, the method further includes the MCU control module determining whether a set continuous working time is reached. If so, the breast pump automatically shuts down; if not, the breast pump continues to work.

[0170] In this embodiment, the set continuous working time is 20 minutes. If the continuous working time reaches 20 minutes, the breast pump automatically shuts down. If the continuous working time does not reach 20 minutes, the breast pump continues to work.

[0171] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A magnetic drive system, characterized in that: include: Flexible parts; Flexible component installation structure; 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; The flexible member mounting structure is provided with air holes; a first magnetic member, wherein the first magnetic member is disposed in the flexible member; The second magnetic member is arranged opposite to the first magnetic member, and the second magnetic member can alternately switch between the S pole and the N pole.

2. The magnetic drive system according to claim 1, characterized in that: The air holes include an air outlet and an air inlet.

3. The magnetic drive system according to claim 1, characterized in that: The second magnetic member is an electromagnetic coil, the second magnetic member is controlled by a control mechanism, and the second magnetic member is electrically connected to the control mechanism.

4. The magnetic drive system according to claim 3, characterized in that: The control mechanism includes a control board and a power supply device. The control board is electrically connected to the second magnetic member, and the power supply device is electrically connected to the control board.

5. The magnetic drive system according to claim 1, characterized in that: At least one third magnetic component is also arranged inside the flexible component, and the third magnetic component surrounds the periphery of the first magnetic component.

6. The magnetic drive system according to claim 5, characterized in that: The bottom cross-section of the flexible member is wavy, and the third magnetic member is arranged at the trough of the flexible member.

7. The magnetic drive system according to claim 1, characterized in that: The flexible member mounting structure is configured as a suction bowl; A first hook edge is provided at the outer edge of the opening of the flexible component mounting structure, and the bowl wall of the flexible component mounting structure and the first hook edge form a hook structure. The outer edge of the flexible component is bent downward to form an annular groove, and a second hook edge is provided on the edge of the flexible component to extend into the inside of the annular groove. 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 according to claim 5, characterized in that: A plurality of the third magnetic members are arranged at intervals on the flexible member; The third magnetic member is annular, and the diameters of the plurality of third magnetic members increase sequentially from the inside to the outside along the radial direction of the flexible member.

9. The magnetic drive system according to claim 7, characterized in that: The bottom of the flexible member installation structure is in contact with the bottom of the flexible member.

10. A breast pump, characterized in that: A magnetic drive system comprising any one of claims 1 to 9.

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