A micro negative pressure integrated pump and breast pump

Abstract

The application provides a micro negative pressure integrated pump and a breast pump, and relates to the technical field of negative pressure pumps. The micro negative pressure integrated pump comprises a motor fixing seat and a rotating assembly. The motor fixing seat is provided with an assembly groove and an air inlet. The assembly groove is used for installing a valve core assembly. The air inlet is in communication with the assembly groove. The motor fixing seat is used for installing a motor. The valve core assembly comprises a valve core and a valve core magnet. The valve core is provided with an automatic rebound reset structure. The valve core magnet is inserted into the valve core. The rotating assembly is arranged on the motor fixing seat. The rotating assembly comprises a rotating shaft and a rotating magnet. The rotating shaft is connected with the motor. The rotating shaft is internally provided with an installation groove. The installation groove is used for installing the rotating magnet. By controlling the motor, the valve core assembly can realize the closing and opening of the air inlet. The design of the valve core assembly replaces the control effect of the electromagnetic valve. The design of the valve core assembly makes the structure of the micro negative pressure integrated pump simpler and facilitates the assembly.

Description

Technical Field

[0001] This application relates to the field of negative pressure pumps, and in particular to a miniature integrated negative pressure pump and a breast pump. Background Technology

[0002] A miniature negative pressure pump is a miniature air pump that generates a vacuum. It has one inlet and one outlet nozzle, and continuously creates negative pressure at the inlet and at the outlet. An electric motor, through a mechanical device, causes the cylinder inside the miniature negative pressure pump to reciprocate, compressing and stretching the air within the pump chamber to create negative pressure. This creates a pressure difference between the inlet and the external atmospheric pressure, drawing gas into the pump chamber and expelling it from the outlet.

[0003] When the miniature negative pressure integrated pump is pumping air or venting air, it is necessary to use a solenoid valve to control the opening and closing of the air inlet or outlet. The design including the solenoid valve makes the miniature negative pressure integrated pump complex in structure and inconvenient to assemble.

[0004] The aforementioned technologies suffer from drawbacks such as complex structure and inconvenient assembly of miniature negative pressure integrated pumps. Summary of the Invention

[0005] To address the shortcomings of complex structure and inconvenient assembly in miniature negative pressure integrated pumps, this application provides a miniature negative pressure integrated pump and a breast pump.

[0006] Firstly, the miniature negative pressure integrated pump provided in this application adopts the following technical solution:

[0007] A miniature negative pressure integrated pump, comprising:

[0008] A motor mounting base is provided with an air inlet and a valve core assembly. The valve core assembly is used to control the opening and closing of the air inlet. The valve core assembly includes a valve core component and a valve core magnet. The valve core component is provided with an automatic springback reset structure. The valve core magnet is inserted into the valve core component.

[0009] A rotating assembly is disposed on the motor mounting base. The rotating assembly includes a rotating shaft and a rotating magnet. The rotating shaft has an internal mounting groove for mounting the rotating magnet. The polarity of the end face of the rotating magnet near the motor mounting base is the same as the polarity of the end face of the valve core magnet near the rotating shaft.

[0010] By adopting the above technical solution, when the rotating shaft rotates, the rotating magnet located on the rotating shaft rotates accordingly. A magnetic force exists between the rotating magnet and the valve core magnet. By controlling the motor's switch, the direction of the magnetic force exerted by the rotating magnet on the valve core magnet changes, allowing the valve core assembly to close or open the air inlet. The valve core assembly design replaces the control function of the solenoid valve, making the structure of the miniature negative pressure integrated pump simpler and easier to assemble. When the rotating shaft rotates, the adjacent rotating magnets and the valve core magnet are in a repulsive state, and the valve core magnet experiences an outward total magnetic force, blocking the air inlet. At this time, the miniature negative pressure integrated pump can pump air normally. When the rotating shaft stops rotating, the valve core magnet experiences an inward total magnetic force or no force at all, and the valve core automatically springs back to its original position, no longer blocking the air inlet, allowing the miniature negative pressure integrated pump to intake air normally.

[0011] Optionally, the miniature negative pressure integrated pump further includes:

[0012] A gas discharge seat, wherein the gas discharge seat is provided with a first gas outlet;

[0013] A cylinder assembly includes a valve mounting seat, a cylinder, and a cylinder mounting seat arranged coaxially. The first end of the valve mounting seat is connected to the gas discharge seat, the second end of the valve mounting seat is connected to the first end of the cylinder, and the cylinder mounting seat is connected to the second end of the cylinder. A one-way valve is placed on the valve mounting seat at the corresponding position of the first gas outlet.

[0014] By adopting the above technical solution, the miniature negative pressure integrated pump can exhaust air from the first outlet through the valve mounting seat and the one-way valve. When the miniature negative pressure integrated pump exhausts air, the one-way valve opens; when the miniature negative pressure integrated pump draws air in, the one-way valve closes. The one-way valve is located inside the valve mounting seat, ensuring that the one-way valve will not shift during the operation of the miniature negative pressure integrated pump.

[0015] Optionally, the motor mounting base is provided with an assembly slot and an air inlet. The assembly slot is used to install the valve core assembly, and the air inlet is connected to the assembly slot. The motor mounting base is used to connect the motor, and the rotating shaft is connected to the motor.

[0016] By adopting the above technical solution, the airflow in the assembly slot is connected to the air inlet, and the motor can drive the rotating shaft.

[0017] Optionally, the cylinder includes a through cylinder body, and the cylinder is provided with a plurality of first mounting rings and first mounting base holes at intervals; the cylinder fixing seat is provided with a first mounting hole at a corresponding position on the cylinder body, the cylinder fixing seat is provided with a second air outlet at the center, the cylinder fixing seat is provided with a first stud seat at the position of the first mounting base hole, and the cylinder fixing seat is provided with a cut at the end away from the cylinder.

[0018] By adopting the above technical solution, the cylinder is sleeved in the cylinder fixing seat, and the cylinder body is respectively aligned and installed in the first mounting hole. The setting of the cylinder fixing seat provides the installation reference for the cylinder. The gas in the micro negative pressure integrated pump can be exhausted to the outside through the first mounting hole, the first cylinder body, the one-way valve, and the first air outlet.

[0019] Optionally, the gas discharge seat is provided with a first mounting groove, and a first mounting recess is provided on the outer peripheral surface of the first mounting groove. The gas discharge seat is provided with a second mounting base hole corresponding to the first mounting base hole. The valve fixing seat is provided with a third mounting base hole at the corresponding position of the second mounting base hole. The miniature negative pressure integrated pump also includes a final assembly screw, which is used to pass through the second mounting base hole and the first mounting base hole to connect with the first stud seat.

[0020] By adopting the above technical solution, the assembly screw passes through the second mounting base hole, the third mounting base hole, and the first mounting base hole to connect with the first stud seat, thereby realizing the integrated connection of the gas discharge seat, the valve fixing seat, the cylinder and the cylinder fixing seat.

[0021] Optionally, a rocker arm assembly is fitted onto the end of the cylinder mounting base away from the cylinder. The rocker arm assembly includes a bladder, which is slidably disposed within the cylinder body. A third air outlet is provided at the end of the bladder closest to the cylinder.

[0022] By adopting the above technical solution, a bladder is movably connected inside the cylinder, and the bladder can undergo elastic deformation to pump gas into the cylinder. Specifically, the bladder is disposed on the rocker arm assembly. When the rocker arm assembly performs a conical pendulum motion around its axis, the bladder on the rocker arm assembly moves and deforms in the vertical direction. When the bladder is compressed, the one-way valve closes to inflate the cylinder; when the bladder is stretched, the one-way valve opens to replenish gas into the bladder.

[0023] Optionally, the swing arm assembly includes a rod body and a central shaft, with multiple rod bodies connected at intervals around the central shaft. The rod bodies are spaced apart from the central shaft, and the bladder is disposed on the rod body. The swing arm assembly also includes a connecting shaft, which is inserted into the central shaft, and a steel ball is connected below the connecting shaft.

[0024] By adopting the above technical solution, the bladder is mounted on the rod, the rod is connected to the central shaft, and the central shaft is connected to the connecting shaft. With the rotation of the connecting shaft, the bladder can rotate with the rod. The connecting shaft contacts the rotating shaft, and the steel balls reduce the contact area between the rocker arm assembly and the rotating shaft, increasing the lifespan of the miniature negative pressure integrated pump.

[0025] Optionally, the motor mounting base is provided with an air nozzle, which is used to connect to the cylinder of the breast pump.

[0026] By adopting the above technical solution, the air nozzle on the motor mounting base can make the airflow of the miniature negative pressure integrated pump communicate with the airflow of the breast pump cylinder.

[0027] Optionally, the motor is provided with a first threaded hole, the motor mounting base is provided with a second stud seat, the miniature negative pressure integrated pump also includes a locking screw, the locking screw is used to pass through the second stud seat and the first threaded hole to connect with the motor, and a sealing ring is provided between the motor mounting base and the motor.

[0028] By adopting the above technical solution, the motor mounting screw connects the motor mounting base and the motor, and the sealing ring prevents gas from leaking from the connection between the motor mounting base and the drive end of the motor.

[0029] Secondly, this application provides a breast pump, which adopts the following technical solution:

[0030] A breast pump includes the aforementioned miniature negative pressure integrated pump, the miniature negative pressure integrated pump being disposed inside the breast pump and having an air nozzle, the breast pump including a milk suction cylinder connected to the air nozzle.

[0031] By adopting the above technical solution, the air nozzle is connected to the breast pump cylinder, and the miniature negative pressure integrated pump can pump or inflate the breast pump; the miniature negative pressure integrated pump is integrated with the breast pump, which reduces the size and floor space of the breast pump, making the breast pump more convenient to use.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The miniature negative pressure integrated pump allows air to enter through the inlet. A motor drives a rotating shaft, which in turn rotates a rotating magnet located on the shaft. A magnetic force exists between the rotating magnet and the valve core magnet. By controlling the motor's on / off switch, the direction of the magnetic force between the rotating magnet and the valve core magnet changes, allowing the valve core assembly to close or open the air inlet. This valve core assembly design replaces the control function of a solenoid valve, simplifying the structure of the miniature negative pressure integrated pump and facilitating assembly.

[0034] 2. When the rotating shaft rotates, the adjacent rotating magnets and the valve core magnet are in a repulsive state. The valve core magnet is subjected to an outward total magnetic force, and the valve core component blocks the air inlet. At this time, the miniature negative pressure integrated pump can draw air normally. When the rotating shaft stops rotating, the valve core magnet is subjected to an inward total magnetic force or is no longer subjected to force. The valve core component automatically springs back to its original position, and the valve core component no longer blocks the air inlet, allowing the miniature negative pressure integrated pump to draw air normally.

[0035] 3. The miniature negative pressure integrated pump is integrated with the breast pump, reducing the size and floor space of the breast pump and making it more convenient to use. Attached Figure Description

[0036] Figure 1 This is an exploded view of the structure of the miniature negative pressure integrated pump in Embodiment 1 of this application.

[0037] Figure 2 yes Figure 1 A cross-sectional schematic diagram of a micro-sized negative pressure integrated pump pumping air from a breast pump.

[0038] Figure 3 yes Figure 1 A cross-sectional schematic diagram of a micro-sized negative pressure integrated pump when it intakes air into a breast pump.

[0039] Figure 4 yes Figure 1 Exploded view of the structure of the rotating component, valve core component, and motor mounting base.

[0040] Figure 5 yes Figure 1 A cross-sectional schematic diagram of the valve core assembly.

[0041] Figure 6 yes Figure 1 A schematic diagram of the gas exhaust seat.

[0042] Figure 7 yes Figure 1 A schematic diagram of the structure of the valve fixing seat.

[0043] Figure 8 yes Figure 1 A schematic diagram of the structure of the middle cylinder.

[0044] Figure 9 yes Figure 1 A schematic diagram of the structure of the cylinder block mounting base.

[0045] Figure 10 yes Figure 1 Another structural diagram of the cylinder block mounting bracket.

[0046] Explanation of reference numerals in the attached drawings: 100, Motor mounting base; 110, Assembly base; 111, Assembly groove; 112, First arc-shaped groove; 113, Second arc-shaped groove; 120, Valve core assembly; 121, Valve core component; 122, Valve core magnet; 123, Automatic spring-back reset structure; 124, Air inlet; 125, Second stud seat; 126, Locking screw; 127, Sealing ring; 130, Air nozzle; 210, Rotating shaft; 211, Rotating magnet; 212, Mounting groove; 310, Gas discharge seat; 311, First air outlet; 312, One-way valve; 313, Second... 314. First mounting groove; 315. Second mounting base hole; 320. Valve fixing seat; 321. Third mounting base hole; 322. Assembly screw; 330. Cylinder; 331. Cylinder body; 332. First mounting ring; 333. First mounting base hole; 340. Cylinder fixing seat; 341. Second air outlet; 342. First stud seat; 343. First mounting hole; 400. Rocker arm assembly; 410. Bladder body; 411. Third air outlet; 420. Rod body; 421. Central shaft; 422. Connecting shaft; 423. Steel ball; 500. Motor. Detailed Implementation

[0047] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0048] Example 1

[0049] Embodiment 1 of this application discloses a miniature integrated negative pressure pump, referring to... Figure 1 The miniature negative pressure integrated pump includes a motor mounting base 100, a rotating assembly, a gas discharge seat 310, and a cylinder 330 assembly, which are connected in sequence.

[0050] Reference Figure 4 The motor mounting base 100 is a cylindrical shaft-shaped body with openings at both ends of different diameters. The smaller diameter opening is for the output end of the motor 500 to be inserted. The motor mounting base 100 includes an assembly body 110 with an assembly groove 111. The assembly groove 111 includes a first arc-shaped groove 112 and a second arc-shaped groove 113. The first arc-shaped groove 112 penetrates the assembly body 110, and the second arc-shaped groove 113 has a larger diameter than the first arc-shaped groove 112. The second arc-shaped groove 113 is located near the center of the assembly body 110, and is internal to the assembly body 110, not penetrating any side wall. The assembly groove 111 is used to install the valve core assembly 120, and the second arc-shaped groove 113 provides an installation reference for the valve core assembly 120 and limits its movement. An air inlet 124 is provided on the circumferential surface of the motor mounting base 100, and the air inlet 124 is connected to the assembly groove 111.

[0051] Reference Figure 1 The motor 500 has a first threaded hole, and the motor mounting base 100 has a second stud seat 125. The miniature negative pressure integrated pump also includes a locking screw 126, which passes through the second stud seat 125 and the first threaded hole to connect with the motor 500. A sealing ring 127 is provided between the motor mounting base 100 and the motor 500. The locking screw 126 connects the motor mounting base 100 and the motor 500, and the sealing ring 127 prevents gas leakage from the connection between the motor mounting base 100 and the drive end of the motor 500.

[0052] Reference Figure 5 The valve core assembly 120 includes a valve core component 121 and a valve core magnet 122. The valve core component 121 is a rubber component with a certain degree of resilience. The valve core component 121 includes a valve core body and an automatic rebound reset structure 123. The automatic rebound reset structure 123 is connected to one end of the valve core body and installed in the second arc-shaped groove 113. A valve core hole is provided in the valve core body for installing the valve core magnet 122. The valve core magnet 122 is inserted into the valve core body. The end of the valve core body away from the automatic rebound reset structure 123 is conical. The conical end of the valve core body is used to cooperate with the air inlet 124. When drawing air, the air inlet 124 is blocked; when venting air, the air inlet 124 is released.

[0053] Reference Figure 1 The rotating assembly is mounted on the motor mounting base 100. The rotating assembly includes a rotating shaft 210 and a rotating magnet 211. One end of the rotating shaft 210 is connected to the motor 500. The rotating shaft 210 has an internal mounting groove 212, the length of which on the circumference of the rotating shaft 210 is greater than its radial length. The number of mounting grooves 212 can be adjusted from 1 to N according to actual needs. The mounting grooves 212 are used to mount the rotating magnet 211. The rotating shaft 210 also has an eccentric hole.

[0054] The rotating shaft 210 is also provided with an eccentrically positioned connecting hole for accommodating the connecting shaft 422. The long end face of the rotating magnet 211 near the motor mounting base 100 and the short end face of the valve core magnet 122 near the rotating shaft 210 have the same polarity, which can both be either S or N poles. When the rotating shaft 210 rotates, the adjacent rotating magnets 211 and valve core magnets 122 are in a repulsive state, and the valve core magnet 122 is subjected to an outward total magnetic force. The valve core component 121 blocks the air inlet 124, and the miniature negative pressure integrated pump can draw air normally at this time. When the rotating shaft 210 stops rotating, the valve core magnet 122 is subjected to an inward total magnetic force or is not subjected to any force, and the valve core component 121 automatically springs back to its original position. The valve core component 121 does not block the air inlet 124, and the miniature negative pressure integrated pump can draw air normally.

[0055] Reference Figure 6The gas discharge seat 310 is provided with a plurality of first gas outlets 311 at intervals; the first gas outlets 311 are used to discharge gas. The gas discharge seat 310 is provided with a plurality of first mounting grooves 313 at intervals at the first gas outlets 311. Ribs are provided inside and outside the first mounting grooves 313. First mounting recesses 314 are provided extending from the outer circumferential surface of the first mounting grooves 313, and the plurality of first mounting recesses 314 are interconnected with each other.

[0056] Reference Figure 8 The cylinder 330 assembly includes a valve mounting seat 320, a cylinder 330, and a cylinder mounting seat 340 coaxially arranged. The first end of the valve mounting seat 320 is connected to the gas discharge seat 310, the second end of the valve mounting seat 320 is connected to the first end of the cylinder 330, and the cylinder mounting seat 340 is connected to the second end of the cylinder 330. The valve mounting seat 320 has a mounting body corresponding to the first mounting groove 313, and a fourth air outlet is provided on the mounting body, corresponding to the position of the first air outlet 311. The mounting body is used to install a one-way valve 312, which is installed at the fourth air outlet. When the one-way valve 312 is open, the fourth air outlet is connected to the first air outlet 311. When the micro negative pressure integrated pump discharges gas, the one-way valve 312 opens; when the micro negative pressure integrated pump inflates the breast pump, the one-way valve 312 closes. The outer periphery of the mounting base is provided with a second mounting groove, and the first mounting groove 314 is sleeved on the second mounting groove. The first mounting groove 314 and the second mounting groove are aligned to facilitate the alignment and installation of the gas discharge seat 310 and the valve fixing seat 320.

[0057] Reference Figure 1 , Figure 2 , Figure 8 The cylinder 330 has multiple through-hole cylinder bodies 331 spaced apart; in this embodiment, three cylinder bodies 331 are provided. The cylinder 330 has multiple first mounting rings 332 and first mounting base holes 333 spaced apart. The cylinder mounting base 340 has first mounting holes 343 at corresponding positions on the cylinder bodies 331; adjacent first mounting holes 343 are not connected, and the cylinder bodies 331 are fitted into the first mounting holes 343. The cylinder mounting base 340 has a slit at the end away from the cylinder 330, and a third air outlet 411 at its center. The three cylinder bodies 331 are evenly spaced along the circumferential direction on the cylinder mounting base 340, so that the multiple cylinder bodies 331 pump gas into the first air outlet 311 in a pulsed manner with the same frequency and capacity. The third air outlet 411 is located at the center of the cylinder mounting base 340, in the middle of the three circular cylinders 331, thereby maximizing the surface area of ​​the cylinder mounting base 340 and providing sufficient working space for the cylinders 331, thus improving the working efficiency of the micro negative pressure integrated pump. The cylinder mounting base 340 has a first stud seat 342 corresponding to the first mounting base hole 333, and the cylinder mounting base 340 has a cutout at the end away from the cylinder 330.

[0058] Reference Figure 7 The gas discharge seat 310 is provided with a second mounting base hole 315 corresponding to the first mounting base hole 333, and the valve fixing seat 320 is provided with a third mounting base hole 321 corresponding to the second mounting base hole 315. The miniature negative pressure integrated pump also includes a general assembly screw 322, which is used to pass through the second mounting base hole 315, the first mounting base hole 333, and the third mounting base hole 321 to connect with the first stud seat 342, thereby realizing the connection between the gas discharge seat 310, the valve fixing seat 320, the cylinder 330 and the cylinder fixing seat 340.

[0059] Reference Figure 3 A rocker arm assembly 400 is fitted onto the end of the cylinder mounting base 340 furthest from the cylinder 330. The rocker arm assembly 400 includes three bladders 410, the number of which corresponds to the number of cylinders 331. Each bladder 410 is slidably disposed within the cylinder 331, and the opening of each bladder 410 near the cylinder 330 is a third air outlet 411. Each bladder 410 is movably connected within the cylinder 331 and can undergo elastic deformation to pump gas into the cylinder 331. Each bladder 410 has openings at both ends with different diameters. A rocker arm one-way valve is provided on the opening of each bladder 410 near the cylinder 331. When the bladder 410 is compressed, the rocker arm one-way valve closes to inflate the cylinder 331; when the bladder 410 is stretched, the rocker arm one-way valve opens to replenish gas into the bladder 410.

[0060] The rocker arm assembly 400 also includes a rod body 420 and a central shaft 421. The rod body 420 has a through hole. The rod bodies 420 are connected to the central shaft 421 at intervals with the central shaft 421 as the center. Multiple rod bodies 420 are spaced apart on the circumference of the central shaft 421, and the number of rod bodies 420 corresponds to the number of cylinder bodies 331. The rod bodies 420 and the central shaft 421 are spaced apart. The bladder body 410 is disposed on the rod body 420. The rocker arm assembly 400 also includes a connecting shaft 422, which is inserted into the central shaft 421. A steel ball 423 is connected below the connecting shaft 422 and is disposed in an eccentric hole.

[0061] A bladder 410 is mounted on a rod 420, which is sleeved on a central shaft 421. When the central shaft 421 undergoes a conical pendulum motion around its axis, the rod 420, sleeved on the upper part of the central shaft 421, follows the rotation of the central shaft 421, causing the bladder 410 on the rod 420 to move and deform in the vertical direction. This allows the one-way valve on the pendulum to close when the bladder 410 is compressed, thus inflating the cylinder 331; and the one-way valve to open when the bladder 410 is stretched, thus replenishing the bladder 410 with gas.

[0062] Since the movement of the central axis 421 is a conical pendulum trajectory around the rotation axis 210, the central axis 421 itself does not rotate. Therefore, the rod 420 and the bladder 410 on the rod 420 will not rotate either. One bladder 410 corresponds to the same cylinder 331 from beginning to end.

[0063] Reference Figure 4 The motor mounting base 100 is equipped with an air nozzle 130, which is used to connect to the cylinder 330 of the breast pump. The air nozzle 130 on the motor mounting base 100 allows the airflow of the miniature negative pressure integrated pump to communicate with the airflow of the breast pump cylinder 330.

[0064] The implementation principle of the miniature negative pressure integrated pump provided in Example 1 is as follows: When the motor 500 is powered on, the motor 500 drives the rotating shaft 210 to rotate, and the rotating magnet 211 rotates with the rotating shaft 210. At this time, the valve core magnet 122 and the rotating magnet 211 are in a repulsive state. The valve core magnet 122 is subjected to an outward force along the radius of the motor fixed seat 100, thereby pushing the valve core component 121 to close the air inlet 124. The swing rod one-way valve is closed and the one-way valve 312 is opened. Gas is discharged from the miniature negative pressure integrated pump through the air nozzle 130, the rod body 420, the fourth air outlet, and the first air outlet 311 in sequence. That is, the miniature negative pressure integrated pump can normally draw air from the milk suction cylinder of the breast pump, and the milk suction cylinder is in a vacuum state.

[0065] After the motor 500 is powered off, the motor 500 drives the rotating shaft 210 to stop rotating. The valve core magnet 122 is subjected to an inward force along the radius of the motor mounting base 100, and the valve core component 121 automatically springs back to its original position, and the air inlet 124 is in the open state. The rocker arm check valve is open and the check valve 312 is closed. Gas enters the milk suction cylinder from the air inlet 124 through the air nozzle 130, and the milk suction cylinder is in a non-vacuum state.

[0066] Example 2

[0067] A breast pump includes the miniature negative pressure integrated pump of embodiment 1. The miniature negative pressure integrated pump is disposed inside the breast pump and is provided with an air nozzle 130. The breast pump includes a milk suction cylinder and is connected to the air nozzle 130.

[0068] The implementation principle of the breast pump provided in Example 2 is as follows: the micro negative pressure integrated pump is integrated with the breast pump, which reduces the size and floor space of the breast pump, making the breast pump more convenient to use.

[0069] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A miniature negative pressure integrated pump, characterized in that, include: A motor mounting base (100) is provided with an air inlet (124) and a valve core assembly (120). The valve core assembly (120) is used to control the opening and closing of the air inlet (124). The valve core assembly (120) includes a valve core component (121) and a valve core magnet (122). The valve core component (121) is provided with an automatic springback reset structure (123). The valve core magnet (122) is inserted into the valve core component (121). A rotating assembly is disposed on the motor mounting base (100). The rotating assembly includes a rotating shaft (210) and a rotating magnet (211). The rotating shaft (210) has a mounting groove (212) inside, which is used to mount the rotating magnet (211). The end face of the rotating magnet (211) near the motor mounting base (100) has the same polarity as the end face of the valve core magnet (122) near the rotating shaft (210). Gas discharge seat (310), the gas discharge seat (310) is provided with a first gas outlet (311); A cylinder (330) assembly, comprising a valve mounting seat (320), a cylinder (330), and a cylinder mounting seat (340) arranged coaxially. The first end of the valve mounting seat (320) is connected to the gas discharge seat (310), the second end of the valve mounting seat (320) is connected to the first end of the cylinder (330), and the cylinder mounting seat (340) is connected to the second end of the cylinder (330). A one-way valve (312) is placed on the valve mounting seat (320) at the corresponding position of the first gas outlet (311). The motor mounting base (100) is provided with an assembly slot (111), the assembly slot (111) is used to install the valve core assembly (120), the air inlet (124) is connected to the assembly slot (111), the motor mounting base (100) is used to install the motor (500), and the rotating shaft (210) is connected to the motor (500). The cylinder (330) includes multiple through cylinder bodies (331), and the cylinder (330) is provided with multiple first mounting rings (332) and first mounting base holes (333) at intervals; the cylinder fixing seat (340) is provided with a first mounting hole (343) at a corresponding position on the cylinder body (331), the cylinder fixing seat (340) is provided with a second air outlet (341) at the center, the cylinder fixing seat (340) is provided with a first stud seat (342) at the position of the first mounting base hole (333), and the cylinder fixing seat (340) is provided with a cut at the end away from the cylinder (330); The gas discharge seat (310) is provided with a first mounting groove (313), and a first mounting recess (314) extends from the outer circumferential surface of the first mounting groove (313). The gas discharge seat (310) is provided with a second mounting base hole (315) corresponding to the first mounting base hole (333). The valve fixing seat (320) is provided with a third mounting base hole (321) corresponding to the second mounting base hole (315). The micro negative pressure integrated pump also includes a general assembly screw (322), which is used to pass through the second mounting base hole (315), the first mounting base hole (333) and connect to the first stud seat (342). The cylinder mounting base (340) is fitted with a rocker arm assembly (400) at one end away from the cylinder (330). The rocker arm assembly (400) includes a bladder (410), which is slidably disposed inside the cylinder body (331). The bladder (410) has a third air outlet (411) at one end near the cylinder (330). The swing arm assembly (400) includes a rod body (420) and a central shaft (421). Multiple rod bodies (420) are connected at intervals around the central shaft (421). The rod bodies (420) and the central shaft (421) are spaced apart. The bladder (410) is disposed on the rod body (420). The swing arm assembly (400) also includes a connecting shaft (422). The connecting shaft (422) is inserted into the central shaft (421). A steel ball (423) is connected below the connecting shaft (422). The motor (500) mounting base is provided with an air nozzle (130), which is used to connect to the cylinder of the breast pump.

2. The miniature negative pressure integrated pump according to claim 1, characterized in that: The motor (500) is provided with a first threaded hole, the motor mounting base (100) is provided with a second stud seat (125), the micro negative pressure integrated pump also includes a locking screw (126), the locking screw (126) is used to pass through the second stud seat (125) and the first threaded hole to connect with the motor (500), and a sealing ring (127) is provided between the motor mounting base (100) and the motor (500).

3. A breast pump, comprising a miniature negative pressure integrated pump as described in any one of claims 1-2, wherein the miniature negative pressure integrated pump is disposed inside the breast pump and the miniature negative pressure integrated pump is provided with an air nozzle (130), and the breast pump includes a milk suction cylinder, wherein the milk suction cylinder is connected to the air nozzle (130).

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