Negative pressure detection device for breast pump

Abstract

The utility model relates to a breast pump negative pressure detection device, and belongs to the technical field of mother and baby product detection. The device comprises a negative pressure detector, wherein a detection port of the negative pressure detector is communicated with a sealing plug through a hose; the negative pressure detector comprises a shell, a control module is arranged in the shell, and the control module is electrically connected with a negative pressure sensing module, a power module and a display module. The detection end of the negative pressure sensing module is located in the detection port; the sealing plug is made of an elastic material and has a shape matched with the inner wall of the bell mouth of the breast suction cover, the sealing plug and the inner wall of the bell mouth of the breast suction cover can form elastic extrusion sealing fit, a through vent hole is formed in the sealing plug, one end of the vent hole is communicated with the hose, and the other end of the vent hole is communicated with the inner cavity of the bell mouth of the breast suction cover. The device can improve the product detection efficiency and accuracy, is small in size, is convenient to carry and move, and is simple and rapid in overall operation.

Description

Technical Field

[0001] The utility model relates to the technical field of maternal and infant product detection, in particular to a negative pressure detection device for a breast pump. Background Art

[0002] A breast pump is a common tool for lactating women to assist in milk discharge and dredge the mammary glands. The mainstream automatic breast pumps on the market currently have massage mode, breast pumping mode and multiple gears. Different modes and gears require a set range of negative pressure values ​​and negative pressure frequencies. However, during the production process, due to the differences in the performance of parts such as pumps and solenoid valves, as well as the uniformity of installation, the negative pressure value and negative pressure frequency of the breast pump host cannot fully meet the set requirements, which will affect the performance of the breast pump host. At present, at the production and testing end, a vacuum gauge is usually installed in the bell mouth of the breast pump accessories, and the negative pressure size of the breast pump is judged by the vacuum gauge reading, and the negative pressure frequency is calculated by manual counting. This makes the test efficiency low. At the same time, the sealing between the vacuum gauge and the bell mouth in the existing structure is poor, which is easy to affect the detection accuracy.

[0003] After searching, it is found that there are also devices for negative pressure detection of breast pumps in the prior art, for example, a suction and frequency testing system for a breast pump with publication number CN112697417A, which includes a testing platform, on which is provided a tester for detecting suction and frequency, a clamp assembly for clamping the breast pump, a simulated breast which is on the same axis as the clamp assembly and is used to simulate a human breast, and a positioning assembly for changing the horizontal position and vertical height of the simulated breast; the simulated breast includes a spherical shell, the outer wall of the spherical shell is covered with a silicone sleeve, a test tube penetrating the silicone sleeve is fixedly provided on the spherical shell, a negative pressure sensor is provided in the test tube, and pressure sensors distributed in a circular ring shape with the test tube as the center are fixedly provided on the outer wall of the spherical shell.

[0004] However, the structure is relatively complex, large in size, and cannot be moved conveniently; the breast pump host needs to be clamped when in use, which is cumbersome to operate and reduces detection efficiency. At the same time, the structure can only measure the breast pump host, but cannot detect the negative pressure and frequency test of the breast pump and accessories combined, causing the actual negative pressure and frequency when the user uses it to deviate from the product detection parameters, affecting the actual product qualification rate. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a negative pressure detection device for a breast pump, which can improve the efficiency and accuracy of product detection. At the same time, the device is small in size, easy to carry and move, and the overall operation is simple and quick.

[0006] The utility model adopts the following technical solutions:

[0007] A negative pressure detection device for a breast pump comprises a negative pressure detector, wherein a detection port of the negative pressure detector is connected to a sealing plug through a hose; the negative pressure detector comprises a housing, wherein a control module is arranged in the housing, and the control module is electrically connected to a negative pressure sensor module, a power module and a display module respectively; a detection end of the negative pressure sensor module is located in the detection port, and a negative pressure signal of a sealed space formed by the sealing plug and a bell mouth of a breast shield is detected through a connected hose;

[0008] The sealing plug is made of elastic material and has a shape that matches the inner wall of the breast shield's bell mouth. The sealing plug and the inner wall of the breast shield's bell mouth can form an elastic extrusion seal. The sealing plug is provided with interconnected vents, one end of the vent is connected to a hose, and the other end can be connected to the internal volume of the breast shield's bell mouth.

[0009] Furthermore, one end of the sealing plug is a frustum, and the peripheral surface of the frustum forms an elastic extrusion fit with the inner wall of the bell mouth of the breast shield.

[0010] Furthermore, a groove is provided on the peripheral surface of the frustum body, which is not connected to the end surfaces of the frustum body and is at a certain distance; when the frustum body is squeezed and matched with the inner wall of the bell mouth of the breast shield, the air in the groove is squeezed and discharged to form an adsorption negative pressure.

[0011] Furthermore, the other end of the sealing plug is a flange structure, and an inner groove is provided on the flange structure. The inner groove can be elastically pressed on the edge of the bell mouth of the breast shield to form a temporary fixation.

[0012] Furthermore, the negative pressure sensing module includes a negative pressure sensor, and the detection range of the negative pressure sensor is -100-0 kPa.

[0013] Furthermore, the power module is a rechargeable battery module.

[0014] Furthermore, the sealing plug is fixedly connected to a bracket, and the bracket can be supported or connected to a fixed surface.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] By providing an integrated negative pressure detector, the size and weight of the device are reduced, making it easier to move and use; by providing an elastic sealing plug, the sealing plug and the inner wall of the breast shield's bell mouth can form an elastic extrusion seal to improve air tightness, thereby improving detection accuracy.

[0017] The grooves are arranged on the peripheral side of the frustum body of the sealing plug and the connection stability between the sealing plug and the bell mouth of the breast shield is improved by utilizing the negative pressure adsorption principle.

[0018] By means of the flange structure provided in the sealing plug and the elastic clamping of the inner card slot and the edge of the bell mouth of the breast shield, the stability of the connection between the two is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance and structure of a negative pressure detection device for a breast pump according to the first embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection of the electrical modules of the negative pressure detector module in the embodiment of the utility model;

[0021] Figure 3 This is a structural schematic diagram of a sealing plug in an embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of another structure of the sealing plug in the embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the appearance structure of a negative pressure detection device for a breast pump according to the second embodiment of the utility model.

[0024] Explanation of the accompanying drawings: 1. Negative pressure detector; 11. Shell; 12. Detection port; 13. Control module; 14. Negative pressure sensor module; 15. Power module; 16. Display module; 17. Switch button; 18. Type-C interface; 2. Hose; 3. Sealing plug; 31. Cone body; 32. Flanged edge structure; 33. Vent; 34. Groove; 35. Inner slot; 4. Breast shield bell mouth; 5. Bracket; 51. Base; 52. Support rod. DETAILED DESCRIPTION

[0025] In order to make the present invention more clear, a negative pressure detection device for a breast pump of the present invention is further described below in conjunction with the accompanying drawings. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Embodiment 1

[0026] like Figures 1 to 3 As shown, a negative pressure detection device for a breast pump comprises a negative pressure detector 1. A side of the negative pressure detector 1 is provided with a detection port 12 of a tubular structure. The detection port 12 is connected with a sealing plug 3 through a hose 2. The sealing plug 3 and a breast shield bell mouth 4 form a negative pressure signal of a sealed space. When a breast pump host (not shown) is connected and assembled with the breast shield bell mouth 4, the negative pressure detector 1 can detect the negative pressure size and negative pressure frequency of the breast pump when it is actually used.

[0027] Specifically, the negative pressure detector 1 includes a rectangular plastic shell 11, a control module 13, a negative pressure sensor module 14 and a power module 15 are arranged inside the shell 11, and a display module 16 is arranged on the upper surface of the shell 11. The control module 13 is electrically connected to the negative pressure sensor module 14, the power module 15 and the display module 16 respectively. In this embodiment, the control module 13 includes a single-chip microcomputer chip of model STC8H1K17T, which is integrated on a PCB circuit board. Of course, the control module 13 also includes a switch button 17 to control the opening and closing of the entire instrument. The switch button 17 can be located on the housing 11; the negative pressure sensing module 14 uses a negative pressure sensor as its detection end. The detection range of the negative pressure sensor is -100-0kPa, which satisfies the range of the maximum negative pressure of the breast pump. The negative pressure sensor is in the detection port 12, and it detects the negative pressure signal of the sealed space formed by the sealing plug 3 and the breast shield bell mouth 4 through the connected hose 2; the power module 15 is a rechargeable battery module, which has two 18650 lithium batteries to power the device, and a charging port located on the side of the housing, such as a Type-C interface 18; the display module 16 has a TFT display screen, which can display the negative pressure value and negative pressure frequency in real time, and the detection personnel can observe the relevant data in real time. When the negative pressure detector 1 is working, the negative pressure sensor module 14 sends the detected negative pressure related signal to the control module 13. The control module 13 processes the signal internally and then sends the processed signal to the display module 16. The display module 16 displays the negative pressure value and negative pressure frequency in real time.

[0028] The sealing plug 3 is made of elastic material. In this embodiment, the sealing plug 3 can be made of polymer materials such as silicone and rubber, and its hardness is preferably 60-80 degrees. The sealing plug 3 has a shape that matches the inner wall of the breast shield bell mouth 4. The sealing plug 3 and the inner wall of the breast shield bell mouth 4 can form an elastic extrusion seal. The sealing plug 3 is provided with a vent hole 33 that is connected to each other. One end of the vent hole 33 is connected to the hose 2, and the other end can be connected to the internal volume of the breast shield bell mouth 4.

[0029] Considering that most of the breast shields on the market have a trumpet-shaped structure with a small inner side and a large outer side, for this reason, one end of the sealing plug 3 is a cone body 31, and the small end of the cone body 31 is inserted into the inner side of the trumpet, so that the circumferential surface of the cone body 31 and the inner wall of the breast shield trumpet 4 form an elastic extrusion fit to achieve a better sealing effect. Further, the circumferential surface of the cone body 31 is provided with a groove 34, which can be one or more grooves 34, which can be strip-shaped, dot-shaped or other shapes. The depth of the groove 34 should not be too deep, and it is sufficient to store a small amount of air. Its distribution shape can be ring-shaped, dot-shaped, etc. It is important that the groove 34 is not connected to the end faces of the cone body 31 at both ends and is at a certain distance. In this way, when the cone body 31 is extruded and matched with the inner wall of the breast shield trumpet 4, part of the air in the groove 34 is extruded and discharged to form an adsorption negative pressure, so that the negative pressure principle can be used to improve the connection stability between the sealing plug 3 and the inner wall of the breast shield trumpet 4.

[0030] In addition, on the basis of the above structure, the sealing plug 3 also has another structure: the structure is that a flange structure 32 is provided at the larger end of the frustum body 31 of the sealing plug 3, the flange structure 32 and the frustum body 31 are integrally formed, and the edge of the flange structure 32 has an inner groove 35, the inner groove 35 is arranged along its circumference, and the groove is oriented toward the central axis of the frustum body 31. Among them, the groove width of the inner groove 35 is slightly smaller than the edge thickness of the breast shield horn 4, when the inner groove 35 is pressed at the edge of the breast shield horn 4, the two are temporarily fixed by elastic deformation and extrusion, so as to further improve the connection stability between the sealing plug 3 and the breast shield horn 4, reduce gas leakage, and thus improve the accuracy of measurement.

[0031] When the device is used, firstly, the breast pump main unit and the breast pump accessories (the breast shield bell mouth 4) are assembled, and then one end of the hose 2 is connected to the negative pressure detector 1, and the other end is connected to the sealing plug 3; then the frustum 31 of the sealing plug 3 is inserted into the breast shield bell mouth 4, so that part of the air in the groove 34 is discharged, and then the flange structure 32 is clamped at the edge of the breast shield bell mouth 4 to be fixed; finally, the negative pressure detector 1 is turned on to perform relevant detection. Embodiment 2

[0032] This embodiment is only described in comparison with the first embodiment. Specifically, Figure 5As shown, the sealing plug 3 is fixedly connected to a bracket 5, and the bracket 5 serves as a supporting component of the sealing plug 3. The hose 2 can be inserted into the bracket 5 and connected to the sealing plug 3, or directly connected to the sealing plug 3. In this embodiment, the bracket 5 has a base 51 and a support rod 52 vertically connected thereto, the sealing plug 3 is fixedly connected to the support rod 52, and the small end of the sealing plug 3 is arranged upward, so that the operator can directly press the breast shield bell mouth 4 on the sealing plug 3 during detection to achieve press sealing and complete the detection of negative pressure related data. In the figure, the bracket 5 is placed on a horizontal working surface, and of course it can also be fixed on other forms of supporting surfaces such as a facade, so that the operator can quickly plug and unplug the breast shield bell mouth 4 onto the sealing plug 3. In addition, the form of the bracket 5 can also be other forms, so as to provide a stable supporting force.

[0033] The above embodiments of the utility model are merely examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the utility model still belong to the protection scope of the utility model.

Claims

1. A negative pressure detection device for a breast pump, comprising a negative pressure detector (1), wherein a detection port (12) of the negative pressure detector (1) is connected to a sealing plug (3) via a hose (2); characterized in that: The negative pressure detector (1) comprises a housing (11), wherein a control module (13) is arranged in the housing (11), and the control module (13) is electrically connected to a negative pressure sensor module (14), a power module (15) and a display module (16) respectively; a detection end of the negative pressure sensor module (14) is located in a detection port (12), and detects a negative pressure signal of a sealed space formed by a sealing plug (3) and a breast shield bell mouth (4) through a connected hose (2); The sealing plug (3) is made of an elastic material and has a shape that matches the inner wall of the breast shield bell mouth (4). The sealing plug (3) and the inner wall of the breast shield bell mouth (4) can form an elastic extrusion seal. The sealing plug (3) is provided with intersecting vents (33). One end of the vent (33) is connected to the hose (2), and the other end can be connected to the internal volume of the breast shield bell mouth (4).

2. A breast pump negative pressure detection device according to claim 1, characterized in that: One end of the sealing plug (3) is a frustum (31), and the circumferential surface of the frustum (31) forms an elastic extrusion fit with the inner wall of the breast shield bell mouth (4).

3. A breast pump negative pressure detection device according to claim 2, characterized in that: A groove (34) is provided on the circumferential surface of the frustum body (31), and the groove (34) is not connected to the end surfaces of both ends of the frustum body (31) and is separated by a certain distance; when the frustum body (31) is pressed and matched with the inner wall of the bell mouth (4) of the breast shield, the air in the groove (34) is squeezed and discharged to form an adsorption negative pressure.

4. A breast pump negative pressure detection device according to claim 3, characterized in that: The other end of the sealing plug (3) is a flange structure (32), and an inner card slot (35) is provided on the flange structure (32). The inner card slot (35) can be elastically pressed on the edge of the breast shield bell mouth (4) to form a temporary fixation.

5. A breast pump negative pressure detection device according to claim 1 or 4, characterized in that: The negative pressure sensing module (14) comprises a negative pressure sensor, and the detection range of the negative pressure sensor is -100-0 kPa.

6. A breast pump negative pressure detection device according to claim 1 or 4, characterized in that: The power module (15) is a rechargeable battery module.

7. A breast pump negative pressure detection device according to claim 1, characterized in that: The sealing plug (3) is fixedly connected to the bracket (5), and the bracket (5) can be supported or connected to a fixed surface.

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