A negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization and use method thereof

Abstract

The present invention relates to the technical field of maternal and infant products, and in particular to a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization and a method of using the breast pump, comprising an outer cover body, an inner cover body, an inner liner cover and a self-locking negative pressure maintaining mechanism, wherein the outer cover body is provided with a pressure regulating hole, and the self-locking negative pressure maintaining mechanism comprises an adjusting channel, an automatic switch structure, a self-locking structure, a pressure regulating structure and an air pressure sensor; the adjusting channel comprises a main channel; the automatic switch structure is arranged at one end of the main channel close to the outer cover body; the self-locking structure is arranged at the middle position inside the main channel, and the self-locking structure is used to separate the main channel; the pressure regulating structure is arranged at one end of the main channel away from the outer cover body, and the pressure regulating structure is used to adjust the air pressure between the outer cover body and the inner cover body; the air pressure sensor is arranged at one end of the main channel connected to the pressure regulating hole; the present invention is provided with a self-locking negative pressure maintaining mechanism, thereby realizing dynamic adjustment of the air pressure in a closed space, and ensuring that the breast shield is continuously and stably adsorbed on the breast of a parturient.

Description

Technical Field

[0001] The present invention relates to the technical field of maternal and infant products, and in particular to a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization, and also to a method for using the negative pressure leak-proof wearable breast pump based on dynamic self-stabilization. Background Art

[0002] In modern parenting, breastfeeding is highly praised for its multiple benefits to infant health. However, for many new mothers, manual milk expression or the use of traditional breast pumps is often accompanied by many inconveniences and challenges, such as inefficient milk extraction, breast discomfort, and milk leakage. In order to solve these problems, a variety of wearable breast pumps have appeared on the market, aiming to provide a more convenient and efficient milk extraction experience. Although existing wearable breast pumps have alleviated the burden of new mothers to a certain extent, they still have some significant defects.

[0003] The patent with announcement number CN221771013U discloses a split-type wearable breast pump, which optimizes the structural design of the breast shield of the wearable breast pump and provides a liner shield that can be detachably installed on the inner side of the trumpet-shaped breast shield. The liner shield of appropriate size and shape can be selected according to the actual shape of the user's breasts and embedded in the breast shield. The narrow end of the liner shield simultaneously seals the through hole of the narrow end of the breast shield when embedded, which more closely covers and fits the front end of the breast while ensuring the sealing during negative pressure adsorption, thereby reducing milk leakage during milk pumping and optimizing the user experience.

[0004] Although the above solution uses the suction cup cover and the breast shield to absorb negative pressure on the mother's breast, when the user exercises or changes her posture, a gap may be created between the breast shield and the skin, causing external air to enter the breast shield, increasing the air pressure in the breast shield and weakening the absorption effect. At this time, the user needs to manually expel the air in the breast shield to restore the absorption capacity of the breast shield. Summary of the invention

[0005] In response to the above problems, a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization is provided. By setting a self-locking negative pressure maintaining mechanism, dynamic adjustment of the air pressure in the closed space can be achieved, ensuring that the breast shield is continuously and stably attached to the mother's breast, effectively preventing leakage, and improving milk suction efficiency and comfort.

[0006] In order to solve the problems in the prior art, the present invention provides a negative pressure leakage-proof wearable breast pump based on dynamic self-stabilization, comprising an outer cover body and an inner cover body formed in one piece, the outer cover body is provided with a pressure regulating hole, an inner lining cover connected to a breast pump body is arranged inside the inner cover body, a self-locking negative pressure maintaining mechanism is arranged on the pressure regulating hole, the self-locking negative pressure maintaining mechanism comprises an adjusting channel, an automatic switch structure, a self-locking structure, a pressure regulating structure and an air pressure sensor; the adjusting channel comprises a main channel connected to the pressure regulating hole; the automatic switch structure is arranged at one end of the main channel close to the outer cover body, when it is necessary to adjust the air pressure between the outer cover body and the inner cover body, the automatic switch structure is in an open state; the self-locking structure is arranged at the middle position inside the main channel, and the self-locking structure is used to isolate the main channel; the pressure regulating structure is arranged at one end of the main channel away from the outer cover body, and the pressure regulating structure is used to adjust the air pressure between the outer cover body and the inner cover body; the air pressure sensor is arranged at one end of the main channel connected to the pressure regulating hole.

[0007] Preferably, the automatic switch structure includes a valve shell connected to the main channel and a valve core arranged inside the valve shell; the upper half and the lower half of the inner wall of the valve shell are respectively provided with a first air exchange channel and a second air exchange channel; the valve core is located between the first air exchange channel and the second air exchange channel, and the peripheral wall of the valve core is in contact with the inner wall of the valve shell.

[0008] Preferably, the automatic switch structure also includes a first control component for controlling the movement of the valve core. When the adsorption effect needs to be enhanced, the first control component controls the valve core to connect with the first air exchange channel. When the adsorption effect needs to be weakened, the first control component controls the valve core to connect with the second air exchange channel.

[0009] Preferably, the automatic switch structure further comprises a positioning ring arranged on the inner wall of the valve housing, and the positioning ring is located between the first air exchange passage and the second air exchange passage, and an annular groove cooperating with the positioning ring is formed on the peripheral wall of the valve core.

[0010] Preferably, the self-locking structure includes a conical cover, a partition block and a second control component; a ventilation window is provided on the side wall of the conical cover; the partition block is coaxially arranged inside the conical cover, and the partition block is consistent with the inner cavity of the conical cover; the second control component is used to control the partition block to move along the axis of the conical cover.

[0011] Preferably, the second control component includes a connecting rod and two magnetic rings; one end of the connecting rod is connected to the partition block, and the other end of the connecting rod extends out of the end of the conical cover and is movably connected to the conical cover; one magnetic ring is fixed to the end of the conical cover and passed through the connecting rod, and the other magnetic ring is fixed to the end of the connecting rod extending out of the conical cover.

[0012] Preferably, the second control assembly further comprises a second spring sleeved on the connecting rod and located between the two magnetic rings, and two ends of the second spring respectively abut against the end of the conical cover and the end of the connecting rod.

[0013] Preferably, the pressure regulating structure includes a cover body, an installation bin and a pressure regulating assembly; the cover body is fixedly connected to the main channel, and the cover body is provided with a plurality of pressure regulating holes; the installation bin is fixedly connected to the cover body, and a heat dissipation hole is provided on the side wall of the installation bin; the pressure regulating assembly is arranged in the installation bin, and the pressure regulating assembly is used to adjust the airflow direction in the main channel.

[0014] Preferably, the regulating channel further comprises a supporting assembly, the supporting assembly is arranged on the pressure regulating hole, and the main channel is mounted on the supporting assembly.

[0015] A method for using a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization is applied to a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization, comprising the following steps:

[0016] S1. First, insert the inner lining cover into the inner cover body;

[0017] S2, the outer cover and the inner cover are then placed on the breasts of the parturient, the self-locking structure is opened, the outer cover is pressed, the air between the outer cover and the inner cover is discharged from the main channel, and the self-locking structure is closed;

[0018] S3, when the air pressure sensor detects that the air pressure between the outer cover and the inner cover increases, the self-locking structure opens again, the pressure regulating structure continues to discharge part of the air inside the outer cover and the inner cover, and the automatic switch structure opens at this time;

[0019] S4. When the air pressure between the outer cover and the inner cover is adjusted, the self-locking structure, the pressure regulating structure and the automatic switch structure are closed in sequence.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention is provided with an adjustment channel structure, an automatic switch structure, a self-locking structure, a pressure regulating structure and an air pressure sensor. The synergistic effect of the automatic switch structure and the self-locking structure realizes precise control of the main channel. When the air pressure needs to be adjusted, the automatic switch structure is opened to allow air circulation. After the air pressure reaches stability, the self-locking structure isolates the main channel to prevent external air from flowing back and maintain the air pressure stability in the closed space. The pressure regulating structure further enhances the flexibility of air pressure regulation. When the air pressure sensor detects air pressure fluctuations, the pressure regulating structure can balance the air pressure in the closed space by adjusting the air pressure in the main channel, ensuring that the liner cover always fits tightly to the breast of the parturient. The automatic switch structure, the self-locking structure and the pressure regulating structure work together to realize dynamic adjustment of the air pressure in the closed space, ensuring that the liner cover is continuously and stably adsorbed on the breast of the parturient, effectively preventing leakage, and improving milk suction efficiency and comfort.

[0022] 2. The present invention is provided with a valve housing and a valve core. The first air exchange channel on the inner wall of the valve housing is used to reduce the air pressure in the enclosed space in the initial stage so that the liner cover can be closely attached to the breast of the parturient. Once the air pressure reaches a balanced state, the valve core is reset and closely attached to the inner wall of the valve housing to effectively prevent the backflow of external air. The second air exchange channel on the inner wall of the valve housing is used to increase the air pressure in the enclosed space at the end of the milk pumping process, so as to facilitate the easy removal of the breast pump.

[0023] 3. The present invention provides a first control component. When it is necessary to enhance the adsorption effect, the first control component controls the valve core to connect with the first ventilation channel, allowing the air in the enclosed space to flow out, thereby reducing the air pressure and enhancing the adsorption force of the liner cover on the breast of the parturient. When it is necessary to weaken the adsorption effect, the pressure regulating structure provides air to the enclosed space to increase the air pressure, and the first control component controls the valve core to connect with the second ventilation channel, allowing the air in the main channel to flow into the enclosed space, thereby weakening the adsorption force and facilitating the removal of the breast pump. The first control component stores and releases energy, thereby achieving efficient resetting of the valve core and improving the use efficiency of the breast pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization of the present invention;

[0025] Figure 2 It is a front view of an outer cover body, an inner cover body and a self-locking negative pressure maintaining mechanism in a negative pressure leakage-proof wearable breast pump based on dynamic self-stabilization of the present invention;

[0026] Figure 3 yes Figure 2 Stereoscopic cross-sectional view at AA in the middle;

[0027] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0028] Figure 5 The invention is a three-dimensional structure of a valve shell, a valve core and a first control component in a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization. Figure 1 ;

[0029] Figure 6 The invention is a three-dimensional structure of a valve shell, a valve core and a first control component in a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization. Figure 2 ;

[0030] Figure 7 It is a stereoscopic diagram of a valve housing, a valve core and a positioning ring in a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization of the present invention;

[0031] Figure 8It is a stereoscopic diagram of a self-locking structure in a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization of the present invention;

[0032] Fig. 9 It is a stereoscopic diagram of a partition block and a second control component of a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization of the present invention;

[0033] Fig.10 It is a stereoscopic diagram of a pressure regulating structure in a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization of the present invention;

[0034] Fig.11 It is a stereoscopic diagram of the installation chamber and the pressure regulating assembly in a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization of the present invention;

[0035] Fig.12 It is a stereoscopic diagram of a main channel and a supporting assembly in a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization of the present invention.

[0036] The numbers in the figure are: 1, outer cover; 11, pressure regulating hole; 2, inner cover; 3, lining cover; 4, self-locking negative pressure maintaining mechanism; 41, regulating channel; 411, main channel; 412, support assembly; 4121, support seat; 4122, base; 42, automatic switch structure; 421, valve housing; 4211, first air exchange channel; 4212, second air exchange channel; 422, valve core; 4221, annular groove; 423, first control assembly; 4 231. guide rod; 4232. first spring; 424. positioning ring; 43. self-locking structure; 431. conical cover; 4311. ventilation window; 432. partition block; 433. second control component; 4331. connecting rod; 4332. magnetic ring; 4333. second spring; 44. pressure regulating structure; 441. cover body; 442. installation compartment; 443. pressure regulating component; 4431. motor; 4432. pressure regulating fan; 45. air pressure sensor. DETAILED DESCRIPTION

[0037] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Reference Figures 1 to 12As shown: a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization, comprising an outer cover body 1 and an inner cover body 2 formed in one piece, the outer cover body 1 is provided with a pressure regulating hole 11, the inner cover body 2 is provided with an inner liner cover 3 connected to the breast pump body, the pressure regulating hole 11 is provided with a self-locking negative pressure maintaining mechanism 4, the self-locking negative pressure maintaining mechanism 4 comprises an adjusting channel 41, an automatic switch structure 42, a self-locking structure 43, a pressure regulating structure 44 and an air pressure sensor 45; the adjusting channel 41 comprises a main channel 411 connected to the pressure regulating hole 11; the ... The automatic switch structure 42 is arranged at one end of the main channel 411 close to the outer cover body 1. When the air pressure between the outer cover body 1 and the inner cover body 2 needs to be adjusted, the automatic switch structure 42 is in the open state; the self-locking structure 43 is arranged at the middle position inside the main channel 411, and the self-locking structure 43 is used to isolate the main channel 411; the pressure regulating structure 44 is arranged at one end of the main channel 411 away from the outer cover body 1, and the pressure regulating structure 44 is used to adjust the air pressure between the outer cover body 1 and the inner cover body 2; the air pressure sensor 45 is arranged at one end of the main channel 411 connected to the pressure regulating hole 11.

[0039] First, install the inner liner cover 3 in the inner cover body 2, and then cover the outer cover body 1 and the inner cover body 2 on the breast of the parturient. The outer cover body 1, the inner cover body 2 and the outer side of the parturient's skin form a closed space. When the parturient presses the outer cover body 1, the self-locking structure 43 remains in the open state, allowing air to be discharged through the automatic switch structure 42, reducing the air pressure in the closed space until the inner liner cover 3 is adsorbed on the breast. Then the self-locking structure 43 and the automatic switch structure 42 are closed to effectively prevent the backflow of external air. If a gap is generated between the outer cover body 1 and the skin due to the parturient's activities, external air may penetrate into the closed space and cause air pressure fluctuations. When the air pressure sensor 45 detects a change in air pressure, The pressure regulating structure 44 is started first, and then the self-locking structure 43 is reopened to exhaust the air in the main channel 411 until the air pressure inside the main channel 411 is lower than the air pressure inside the enclosed space. At this time, the automatic switch structure 42 is opened again to allow excess air in the enclosed space to flow out until the air pressure reaches a preset value. Then the self-locking structure 43 and the automatic switch structure 42 are closed again to maintain a constant air pressure. This process is repeated, and the automatic switch structure 42, the self-locking structure 43 and the pressure regulating structure 44 work together to achieve dynamic adjustment of the air pressure in the enclosed space, ensuring that the liner cover 3 is continuously and stably adsorbed on the breast of the parturient, effectively preventing leakage, and improving milk suction efficiency and comfort.

[0040] Reference Figure 4 and Figure 5As shown: the automatic switch structure 42 includes a valve shell 421 connected to the main channel 411 and a valve core 422 arranged inside the valve shell 421; the upper half and the lower half of the inner wall of the valve shell 421 are respectively provided with a first air exchange channel 4211 and a second air exchange channel 4212; the valve core 422 is located between the first air exchange channel 4211 and the second air exchange channel 4212, and the peripheral wall of the valve core 422 abuts against the inner wall of the valve shell 421.

[0041] When the outer cover body 1 and the inner cover body 2 are tightly fitted on the breast of the parturient to form a closed space, the air in the closed space is squeezed and a force is generated on the valve core 422 toward the middle of the main channel 411. This force pushes the valve core 422 to move, and the peripheral wall of the valve core 422 moves to the first air exchange channel 4211 on the inner wall of the valve shell 421. A gap is generated between the valve core 422 and the inner wall of the valve shell 421, and the air in the closed space flows into the main channel 411 through the first air exchange channel 4211 to reduce the air pressure. Once the liner cover 3 is stably adsorbed on the breast, the air pressure in the closed space reaches a balanced state. At this time, the valve core 422 is reset to between the first air exchange channel 4211 and the second air exchange channel 4212, tightly fitting the valve shell 4 21 inner wall, the automatic switch structure 42 is closed, which effectively prevents the external air from flowing back and maintains the negative pressure state. When the milking process is over and the breast pump needs to be removed, the pressure regulating structure 44 starts to work and provides air to the closed space, causing the air pressure in the main channel 411 to gradually increase. The air in the main channel 411 exerts a force on the valve core 422 toward the closed space, pushing the valve core 422 to move to the second air exchange channel 4212. At this time, a gap is generated between the valve core 422 and the inner wall of the valve shell 421 at the second air exchange channel 4212, and the air in the main channel 411 flows into the closed space through the second air exchange channel 4212, thereby increasing the air pressure in the closed space, so that the breast pump can be easily removed from the breast of the parturient.

[0042] Reference Figure 4 , Figure 5 and Figure 6 As shown: the automatic switch structure 42 also includes a first control component 423 for controlling the movement of the valve core 422. When the adsorption effect needs to be enhanced, the first control component 423 controls the valve core 422 to connect with the first air exchange channel 4211. When the adsorption effect needs to be weakened, the first control component 423 controls the valve core 422 to connect with the second air exchange channel 4212.

[0043] Specifically, the first control component 423 includes a guide rod 4231 and two first springs 4232, the two ends of the guide rod 4231 are connected to the two ends of the valve housing 421, the valve core 422 is movably installed on the guide rod 4231, the two first springs 4232 are respectively mounted on the two ends of the guide rod 4231, and the two ends of the first spring 4232 are respectively connected to the ends of the valve core 422 and the valve housing 421.

[0044] In the working process, when the air pressure in the enclosed space rises and exerts a force on the valve core 422, causing the valve core 422 to move toward the first air exchange channel 4211, the valve core 422 will compress the first spring 4232 close to the side of the first air exchange channel 4211. The first spring 4232 stores elastic potential energy during the compression process. Once the liner cover 3 is successfully adsorbed on the breast of the parturient and the required negative pressure state is reached, the first spring 4232 immediately releases the stored potential energy and pushes the valve core 422 to return to its initial position, that is, between the first air exchange channel 4211 and the second air exchange channel 4212, thereby closing the air exchange channel and maintaining a stable adsorption effect. On the contrary, when it is needed To weaken the adsorption effect, for example, when the liner cover 3 is removed, the pressure regulating structure 44 provides air to the enclosed space, causing the air pressure in the main channel 411 to increase, thereby generating a force on the valve core 422 toward the second air exchange channel 4212, pushing the valve core 422 to move and compressing the first spring 4232 on the side close to the enclosed space. Similarly, the first spring 4232 stores elastic potential energy during the compression process. After the liner cover 3 is removed, the first spring 4232 releases the potential energy, pushing the valve core 422 to reset, and preparing for the next use. The energy is stored and released by the first control component 423, thereby achieving efficient resetting of the valve core 422 and improving the use efficiency of the breast pump.

[0045] Reference Figure 4 and Figure 7 As shown: the automatic switch structure 42 also includes a positioning ring 424 arranged on the inner wall of the valve housing 421, and the positioning ring 424 is located between the first air exchange channel 4211 and the second air exchange channel 4212, and an annular groove 4221 cooperating with the positioning ring 424 is opened on the peripheral wall of the valve core 422.

[0046] In the working process, when the first spring 4232 close to the first air exchange channel 4211 releases its stored elastic potential energy and pushes the valve core 422 to move to the initial position, the valve core 422 may briefly apply a force to the first spring 4232 on the second air exchange channel 4212 due to inertia, which may cause the first spring 4232 on the second air exchange channel 4212 to be compressed, and then the first spring 4232 releases its elastic potential energy and pushes the valve core 422 to move in the opposite direction, so that the valve core 422 generates reciprocating vibration between the two first springs 4232. Therefore, a positioning ring 424 is provided on the inner wall of the valve housing 421 to An annular groove 4221 is provided on the peripheral wall. In an initial state, the annular groove 4221 on the valve core 422 is stuck on the positioning ring 424 to form a stable supporting point. When the valve core 422 is moved by an external force, the annular groove 4221 is separated from the positioning ring 424. However, in the process of the first spring 4232 pushing the valve core 422 to return, once the valve core 422 approaches its initial position, the annular groove 4221 will be stuck in the positioning ring 424 again. At this time, resistance will be generated between the positioning ring 424 and the annular groove 4221. This resistance overcomes the tendency of the valve core 422 to continue moving due to inertia, thereby causing the valve core 422 to stop quickly and stably at a predetermined position.

[0047] Reference Figure 4 and Figure 8 As shown: the self-locking structure 43 includes a conical cover 431, a partition block 432 and a second control component 433; a ventilation window 4311 is provided on the side wall of the conical cover 431; the partition block 432 is coaxially arranged inside the conical cover 431, and the partition block 432 is consistent with the inner cavity of the conical cover 431; the second control component 433 is used to control the partition block 432 to move along the axis of the conical cover 431.

[0048] In the absence of the self-locking structure 43, before the pressure regulating structure 44 is started, the valve core 422 is in a force balanced state. After the pressure regulating structure 44 is started, the air in the main channel 411 is discharged, the air pressure in the main channel 411 is reduced, the forces on both sides of the valve core 422 are unbalanced, and the force on the side of the valve core 422 facing the main channel 411 is reduced, causing the valve core 422 to move toward the first air exchange channel 4211. The reduction in the air pressure in the main channel 411 is a continuous process. During this process, the air pressure on the side of the valve core 422 facing the main channel 411 may still be greater than the air pressure on the other side of the valve core 422, causing the air in the main channel 411 to flow into the enclosed space, thereby increasing the air pressure in the enclosed space and weakening the adsorption effect. Therefore, a pressure regulating structure 44 is provided between the automatic switch structure 42 and the pressure regulating structure 44. A self-locking structure 43 is arranged. When it is necessary to reduce the air pressure in the enclosed space, the self-locking structure 43 divides the main channel 411 into two independent areas, and the pressure regulating structure 44 is started to extract the air on one side of the self-locking structure 43, resulting in a large pressure difference on both sides of the self-locking structure 43. Subsequently, the second control component 433 is activated to drive the partition block 432 to separate from the conical cover 431, and open the flow channel. Under the action of the air pressure gradient, the air on the high-pressure side quickly flows to the low-pressure side through the ventilation window 4311 and the gap between the partition block 432 and the conical cover 431, resulting in a sharp drop in the air pressure in the area between the automatic switch structure 42 and the self-locking structure 43. As the air pressure in this area decreases, the air is effectively prevented from flowing back to the enclosed space, thereby ensuring that the adsorption force between the outer cover body 1 and the inner cover body 2 is stably maintained.

[0049] Reference Figure 8 and Fig. 9 As shown: the second control component 433 includes a connecting rod 4331 and two magnetic rings 4332; one end of the connecting rod 4331 is connected to the partition block 432, and the other end of the connecting rod 4331 extends out of the end of the conical cover 431 and is movably connected to the conical cover 431; one magnetic ring 4332 is fixed to the end of the conical cover 431 and passed through the connecting rod 4331, and the other magnetic ring 4332 is fixed to the end of the connecting rod 4331 extending out of the conical cover 431.

[0050] When both magnetic rings 4332 are electromagnetic rings, when it is necessary to close the main channel 411, current in the same direction is passed through the two electromagnetic rings, and the electromagnetic rings on the connecting rod 4331 are displaced by utilizing the principle of electromagnetic repulsion, and then the partition block 432 is driven to be in close contact with the conical cover 431 through the connecting rod 4331 to achieve the closure of the channel. When it is necessary to open the main channel 411, reverse current is passed through the two electromagnetic rings. Under the action of electromagnetic attraction, the electromagnetic ring that was originally moving pulls or pushes the partition block 432 to separate from the conical cover 431 through the connecting rod 4331, thereby opening the channel. When one of the two magnetic rings 4332 is permanently When one of the magnetic rings is used as a pass electromagnetic ring and the other is a pass electromagnetic ring, when it is necessary to close the main channel 411, the polarity of the pass electromagnetic ring is adjusted to make the polarity of the pass electromagnetic ring the same as the polarity of the permanent magnetic ring, and the principle of like magnetic poles repelling each other is used to prompt the connecting rod 4331 and the partition block 432 to move toward and contact the conical cover 431 to achieve a closing effect. When it is necessary to open the main channel 411, the polarity of the pass electromagnetic ring is reversed to make the polarity of the pass electromagnetic ring opposite to the polarity of the permanent magnetic ring, the partition block 432 is separated from the conical cover 431, and the channel is opened. By adjusting the polarity of the pass electromagnetic ring, the relative position between the conical cover 431 and the partition block 432 is controlled to achieve rapid opening and closing of the channel.

[0051] Reference Figure 8 and Fig. 9 As shown: the second control component 433 also includes a second spring 4333 which is sleeved on the connecting rod 4331 and located between the two magnetic rings 4332, and the two ends of the second spring 4333 are respectively abutted against the end of the conical cover 431 and the end of the connecting rod 4331.

[0052] When the two magnetic rings 4332 approach each other, if the positions of the two magnetic rings 4332 are not limited, the two magnetic rings 4332 may collide, causing damage to the magnetic rings 4332. Therefore, a second spring 4333 is provided. Under normal circumstances, the second spring 4333 exerts a continuous force toward the conical cover 431 on the partition block 432 through the connecting rod 4331 through its elastic force, thereby ensuring that the partition block 432 and the conical cover 431 maintain contact with each other, thereby achieving effective closure of the channel. When the two magnetic rings 4332 need to approach each other to open the channel, the second spring 4333 will be gradually compressed. Since the compression stroke of the second spring 4333 is limited, the minimum distance between the two magnetic rings 4332 after approaching each other is limited, thereby effectively preventing physical contact and collision between the two magnetic rings 4332.

[0053] Reference Figure 4 , Fig.10 and Fig.11As shown: the pressure regulating structure 44 includes a cover body 441, an installation bin 442 and a pressure regulating assembly 443; the cover body 441 is fixedly connected to the main channel 411, and the cover body 441 is provided with a plurality of pressure regulating holes; the installation bin 442 is fixedly connected to the cover body 441, and a heat dissipation hole is provided on the side wall of the installation bin 442; the pressure regulating assembly 443 is arranged in the installation bin 442, and the pressure regulating assembly 443 is used to adjust the airflow direction in the main channel 411.

[0054] Specifically, the pressure regulating assembly 443 includes a motor 4431 and a pressure regulating fan 4432 . The motor 4431 is disposed in the mounting chamber 442 , and the output shaft of the motor 4431 extends out of the mounting chamber 442 . The pressure regulating fan 4432 is connected to the output shaft of the motor 4431 .

[0055] When the air pressure in the enclosed space needs to be lowered, the motor 4431 starts and drives the pressure regulating fan 4432 to rotate clockwise. The rotation of the pressure regulating fan 4432 produces a strong suction effect, which draws out the air in the main channel 411, causing the air pressure inside the main channel 411 to decrease. The air pressure difference causes the main channel 411 to form a suction force on the inside of the enclosed space, thereby reducing the air pressure. On the contrary, if the air pressure in the enclosed space needs to be increased, the motor 4431 drives the pressure regulating fan 4432 to rotate counterclockwise. At this time, the rotation of the pressure regulating fan 4432 draws external air into the main channel 411, causing the air pressure inside the main channel 411 to rise rapidly. The air pressure in the enclosed space can also rise rapidly, thereby achieving rapid adjustment of the air pressure in the enclosed space.

[0056] Reference Figure 4 and Fig.12 As shown, the regulating channel 41 also includes a supporting assembly 412 , which is disposed on the pressure regulating hole 11 , and the main channel 411 is mounted on the supporting assembly 412 .

[0057] Specifically, the support assembly 412 includes a support seat 4121 and a base 4122. The support seat 4121 is embedded in the pressure regulating hole 11, and the support seat 4121 is interference fit with the pressure regulating hole 11. The middle part of the support seat 4121 has a flow channel. The base 4122 is fixed on the support seat 4121, and the main channel 411 is installed on the base 4122.

[0058] The outer cover body 1 is made of flexible material. When using the outer cover body 1, the user will squeeze the air between the outer cover body 1 and the inner cover body 2. However, due to the flexible characteristics of the outer cover body 1, the outer cover body 1 will deform when subjected to force, which may cause a potential gap at the connection between the main channel 411 and the pressure regulating hole 11. Therefore, a support assembly 412 is provided. The support seat 4121 in the support assembly 412 is tightly combined with the outer cover body 1 through an interference fit to form a sealing interface, which effectively prevents air from entering the enclosed space through the tiny gap between the support seat 4121 and the outer cover body 1. At the same time, the connection between the base 4122 and the support seat 4121, and the fixed connection between the main channel 411 and the base 4122, the support assembly 412 effectively prevents air from leaking through the gap at the connection, thereby maintaining the air pressure stability in the enclosed space.

[0059] A method for using a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization is applied to a negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization, comprising the following steps:

[0060] S1, first insert the lining cover 3 into the inner cover body 2;

[0061] S2, the outer cover body 1 and the inner cover body 2 are then covered on the breast of the parturient, the self-locking structure 43 is opened, the outer cover body 1 is pressed, the air between the outer cover body 1 and the inner cover body 2 is discharged from the main channel 411, and the self-locking structure 43 is closed;

[0062] S3, when the air pressure sensor 45 detects that the air pressure between the outer cover body 1 and the inner cover body 2 increases, the self-locking structure 43 opens again, the pressure regulating structure 44 continues to discharge part of the air inside the outer cover body 1 and the inner cover body 2, and at this time the automatic switch structure 42 opens;

[0063] S4. When the air pressure between the outer cover body 1 and the inner cover body 2 is adjusted, the self-locking structure 43, the pressure regulating structure 44 and the automatic switch structure 42 are closed in sequence.

[0064] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A negative pressure anti-leakage wearable breast pump based on dynamic self-stabilization, comprising an outer cover body (1) and an inner cover body (2) formed in one piece, the outer cover body (1) being provided with a pressure regulating hole (11), and the inner cover body (2) being provided with an inner lining cover (3) connected to a breast pump body, characterized in that: A self-locking negative pressure maintaining mechanism (4) is provided on the pressure regulating hole (11), and the self-locking negative pressure maintaining mechanism (4) comprises a regulating channel (41), an automatic switch structure (42), a self-locking structure (43), a pressure regulating structure (44) and an air pressure sensor (45); the regulating channel (41) comprises a main channel (411) connected to the pressure regulating hole (11); the automatic switch structure (42) is provided at one end of the main channel (411) close to the outer cover body (1), and when the pressure between the outer cover body (1) and the inner cover body (2) needs to be adjusted ), the automatic switch structure (42) is in an open state; the self-locking structure (43) is arranged at a middle position inside the main channel (411), and the self-locking structure (43) is used to isolate the main channel (411); the pressure regulating structure (44) is arranged at an end of the main channel (411) away from the outer cover body (1), and the pressure regulating structure (44) is used to regulate the air pressure between the outer cover body (1) and the inner cover body (2); and the air pressure sensor (45) is arranged at an end of the main channel (411) connected to the pressure regulating hole (11).

2. A wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 1, characterized in that: The automatic switch structure (42) comprises a valve housing (421) connected to the main channel (411) and a valve core (422) arranged inside the valve housing (421); the upper half and the lower half of the inner wall of the valve housing (421) are respectively provided with a first air exchange channel (4211) and a second air exchange channel (4212); the valve core (422) is located between the first air exchange channel (4211) and the second air exchange channel (4212), and the peripheral wall of the valve core (422) is in contact with the inner wall of the valve housing (421).

3. A wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 2, characterized in that: The automatic switch structure (42) further comprises a first control component (423) for controlling the movement of the valve core (422); when it is necessary to enhance the adsorption effect, the first control component (423) controls the valve core (422) to connect with the first air exchange passage (4211); when it is necessary to weaken the adsorption effect, the first control component (423) controls the valve core (422) to connect with the second air exchange passage (4212).

4. A wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 2, characterized in that: The automatic switch structure (42) further comprises a positioning ring (424) arranged on the inner wall of the valve housing (421), and the positioning ring (424) is located between the first air exchange passage (4211) and the second air exchange passage (4212), and an annular groove (4221) cooperating with the positioning ring (424) is provided on the peripheral wall of the valve core (422).

5. A wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 1, characterized in that: The self-locking structure (43) comprises a conical cover (431), a partition block (432) and a second control component (433); a ventilation window (4311) is provided on the side wall of the conical cover (431); the partition block (432) is coaxially arranged inside the conical cover (431), and the partition block (432) is matched with the inner cavity of the conical cover (431); and the second control component (433) is used to control the partition block (432) to move along the axis of the conical cover (431).

6. A wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 5, characterized in that: The second control assembly (433) comprises a connecting rod (4331) and two magnetic rings (4332); one end of the connecting rod (4331) is connected to the partition block (432), and the other end of the connecting rod (4331) extends out of the end of the conical cover (431) and is movably connected to the conical cover (431); one magnetic ring (4332) is fixed to the end of the conical cover (431) and passed through by the connecting rod (4331), and the other magnetic ring (4332) is fixed to the end of the connecting rod (4331) extending out of the conical cover (431).

7. A wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 6, characterized in that: The second control component (433) further comprises a second spring (4333) which is sleeved on the connecting rod (4331) and located between the two magnetic rings (4332), and the two ends of the second spring (4333) are respectively in contact with the end of the conical cover (431) and the end of the connecting rod (4331).

8. The wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 1, characterized in that: The pressure regulating structure (44) comprises a cover body (441), an installation chamber (442) and a pressure regulating assembly (443); the cover body (441) is fixedly connected to the main channel (411), and the cover body (441) is provided with a plurality of pressure regulating holes; the installation chamber (442) is fixedly connected to the cover body (441), and a heat dissipation hole is provided on a side wall of the installation chamber (442); the pressure regulating assembly (443) is arranged in the installation chamber (442), and the pressure regulating assembly (443) is used to adjust the airflow direction in the main channel (411).

9. The wearable breast pump with negative pressure and leakage prevention based on dynamic self-stabilization according to claim 1, characterized in that: The regulating channel (41) further comprises a supporting assembly (412), wherein the supporting assembly (412) is arranged on the pressure regulating hole (11), and the main channel (411) is mounted on the supporting assembly (412).

10. A method for using a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization, applied to a negative pressure leak-proof wearable breast pump based on dynamic self-stabilization as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, first insert the inner lining cover (3) into the inner cover body (2); S2, the outer cover body (1) and the inner cover body (2) are then placed on the breasts of the parturient, the self-locking structure (43) is opened, the outer cover body (1) is pressed, the air between the outer cover body (1) and the inner cover body (2) is discharged from the main channel (411), and the self-locking structure (43) is closed; S3, when the air pressure sensor (45) detects that the air pressure between the outer cover body (1) and the inner cover body (2) increases, the self-locking structure (43) opens again, the pressure regulating structure (44) continues to discharge part of the air inside the outer cover body (1) and the inner cover body (2), and at this time the automatic switch structure (42) opens; S4. When the air pressure between the outer cover (1) and the inner cover (2) is adjusted, the self-locking structure (43), the pressure regulating structure (44) and the automatic switch structure (42) are closed in sequence.

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