Air pump for breast pump and breast pump

Abstract

The air pump comprises a pump body, the pump body comprises a motor and a driving connecting rod connected to an output shaft of the motor, the pump body further comprises a pressure cavity and a piston arranged in the pressure cavity in a sliding fit mode, and a ventilation assembly is arranged at the end of the pressure cavity and drives the piston to move up and down through the driving connecting rod. According to the breast pump, a large stroke can be achieved, the whole air pump can generate large negative pressure, the suction force of the breast pump is high, and due to the fact that the piston is not connected with parts in the pressure cavity, vibration is small in the operation process.

Description

Technical Field

[0001] The utility model relates to the field of maternal and infant products, and more specifically to an air pump for a breast pump. Background Art

[0002] Electric breast pumps are increasingly popular as a tool for expressing milk. They offer excellent suction power and require no manual operation, making them labor-saving. However, due to the high vibration and noise levels of the pump, as well as limitations in suction power, their use can be problematic, particularly at night, affecting infants and young children. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an air pump for a breast pump, which has greater suction force and less vibration.

[0004] The technical solution of the present utility model is to provide an air pump for a breast pump with the following structure, including a pump body, wherein the pump body includes a motor and a drive connecting rod connected to the motor output shaft, and also includes a pressure chamber and a piston slidingly fitted in the pressure chamber, and an air exchange component is provided at the end of the pressure chamber.

[0005] After adopting the above structure, the air pump for a breast pump of the present invention has the following advantages compared with the prior art: by driving the connecting rod to drive the piston to move up and down, it can have a larger stroke, so that the overall air pump can generate a larger negative pressure, and the suction force of the breast pump is stronger. Because the piston is not connected to the components in the pressure chamber, the vibration during operation is small.

[0006] As an improvement of the present invention, the ventilation assembly includes a plurality of one-way ventilation valves.

[0007] As an improvement of the present invention, the utility model further includes an eccentric wheel driven by the motor output shaft, the driving connecting rod is drivingly connected to the eccentric wheel, and also includes a vibration plate connected to the eccentric wheel.

[0008] As an improvement of the present invention, a silent valve connected to the pump body is further included. The silent valve includes a valve body and a silencer cavity connected to the valve body. The valve body is provided with a communication port communicating with the silencer cavity.

[0009] As an improvement of the present invention, an opening is provided at one end of the muffler chamber connected to the valve body, the valve body is sealed on the opening, and the communication port is communicated with the opening.

[0010] As an improvement of the present invention, the opening of the muffler cavity is provided with a sealing groove, and the valve body is provided with a sealing protrusion matching the sealing groove.

[0011] As an improvement of the present invention, the utility model further comprises a cover plate arranged on the pump body, wherein the cover plate is provided with a ventilation channel communicating with the muffler cavity.

[0012] As an improvement of the present invention, a sound insulation layer is provided on the inner wall of the silencing cavity.

[0013] As an improvement of the present invention, the silencing cavity and the cover plate are integrally formed.

[0014] The technical solution of the present invention is to provide a breast pump comprising any one of the above-mentioned air pumps for breast pumps.

[0015] The technical solution of the present invention is to provide a breast pump with the following structure, including any one of the above-mentioned air pumps for breast pumps.

[0016] After adopting the above structure, the breast pump of the present invention has the following advantages compared with the prior art: by driving the connecting rod to drive the piston to move up and down, it can have a larger stroke, the overall air pump can generate a larger negative pressure, and the suction force of the breast pump is stronger. Because the piston is not connected to the components in the pressure chamber, the vibration during operation is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the air pump for the utility model breast pump Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of the air pump for the utility model breast pump Figure 2 .

[0019] Figure 3 yes Figure 2 Schematic diagram of the cross section along AA.

[0020] Figure 4 This is a schematic diagram of the structure of the air pump for the utility model breast pump Figure 3 .

[0021] Figure 5 yes Figure 4 Schematic diagram of the cross section along BB.

[0022] Figure 6 This is a schematic diagram of the structure of the silencer chamber of the utility model Figure 1 .

[0023] Figure 7 This is a schematic diagram of the structure of the silencer chamber of the utility model Figure 2 .

[0024] Figure 8 It is a structural diagram of the valve body of the utility model.

[0025] As shown in the figure: 1. Pump body; 11. Motor; 12. Driving connecting rod; 13. Pressure chamber; 14. Piston; 15. Eccentric wheel; 16. Vibrating plate; 17. Ventilation assembly; 2. Silent valve; 21. Valve body; 22. Silence chamber; 221. Left cavity; 222. Right cavity; 23. Connecting port; 24. Opening; 25. Sealing groove; 26. Sealing protrusion; 3. Cover plate; 31. Ventilation channel; 311. Left channel; 312. Right channel; 4. Air bleed hole. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] See Figure 1-Figure 5 As shown, an air pump for a breast pump having the following structure is provided, comprising a pump body 1, comprising a motor 11 and a drive connecting rod 12 connected to the output shaft of motor 11, a pressure chamber 13, and a piston 14 slidably fitted within the pressure chamber 13. An air exchange assembly 17 is provided at the end of the pressure chamber 13. The drive connecting rod 12 drives the piston 14 up and down, enabling a large stroke, thereby generating a large negative pressure in the entire air pump and enhancing suction. Because the piston 14 is not connected to components within the pressure chamber 13, vibration is reduced during operation. The pump body 1 also comprises an eccentric wheel 15 driven by the output shaft of motor 11, the drive connecting rod 12 being drivably connected to the eccentric wheel 15, and a vibration plate 16 connected to the eccentric wheel 15. The eccentric wheel 15 can move the drive connecting rod 12, ultimately achieving up and down movement of the piston 14. The vibration plate 16 connected to the eccentric wheel 15 can vibrate the entire pump, thereby achieving vibration of the pump body.

[0028] See Figure 1-Figure 5 As shown, the ventilation component 17 includes a plurality of one-way ventilation valves, which can perform ventilation operations.

[0029] See Figure 1-Figure 2 As shown, the pump body 1 further includes a silent valve 2 connected to the pump body 1, the silent valve 2 including a valve body 21 and a silencer chamber 22 connected to the valve body 21, the valve body 21 being provided with a communication port 23 communicating with the silencer chamber 22. By providing the silent valve 2 with the silencer chamber 22, not only can the operating sound of the silent valve 2 be greatly reduced, but also the various channels are directly connected through the sealed silencer chamber 22, thereby reducing the number of connected pipes on the pump body 1, i.e., there will be no pipe-transmitted noise and vibration, and the noise can be isolated in the silencer chamber 22. The silencer chamber 22 can be set to a larger volume, and has strong overall rigidity and sound insulation performance. The silencer chamber 22 and the valve body 21 are combined into one, which not only greatly reduces the number of connected pipes but also greatly reduces the overall volume, facilitates the design of the pump, and is more reliable.

[0030] See Figure 6-Figure 8As shown, the end of the muffler chamber 22 connected to the valve body 21 is provided with an opening 24. The valve body 21 is sealed on the opening 24, and the communication port 23 is connected to the opening 24. This provides a good sealing effect and facilitates the installation of the valve body 21. The opening 24 of the muffler chamber 22 is provided with a sealing groove 25, and the valve body 21 is provided with a sealing protrusion 26 that matches the sealing groove 25, which improves the sealing effect and has a positioning function.

[0031] That is, the silencer chamber 22 is directly connected to the cover plate 3 and is connected to the internal channel. That is, the silencer chamber 22 can be connected to the cover plate 3 separately or in an integrated design, reducing components and achieving better noise control effects. The silencer chamber 22 is provided with a left cavity 221 and a right cavity 222. The ventilation channel 31 is provided with a left channel 311 that is connected to the left cavity 221, and the ventilation channel 31 is provided with a right channel 312 that is connected to the right cavity 222. The two chambers are connected to the channel inside the cover plate 3, that is, connected to the air inlet and outlet of the pump body 1. The connecting port 23 is connected to the left cavity 221, enabling the silent valve 2 to control the airflow in the left cavity 221. The right cavity 222 is provided with an air vent 4, which enables the right cavity 222 to communicate with the outside world. The inner wall of the silencer chamber 22 is provided with a silencer, such as a silencer membrane covering the inner wall, or a silencer cotton filled in the silencer chamber 22, which can greatly improve the sound absorbing effect.

[0032] See Figures 1-8 As shown, a breast pump having the following structure is provided, including any of the above-mentioned air pumps for breast pumps. By driving the connecting rod 12 to move the piston 14 up and down, a large stroke can be achieved, thereby generating a large negative pressure in the entire air pump and providing a strong suction force for the breast pump. Because the piston 14 is not connected to the components within the pressure chamber 13, vibration during operation is reduced.

[0033] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An air pump for a breast pump, characterized in that: The invention comprises a pump body (1), wherein the pump body (1) comprises a motor (11) and a driving connecting rod (12) connected to the output shaft of the motor (11), and further comprises a pressure chamber (13) and a piston (14) slidingly fitted in the pressure chamber (13). An air exchange component (17) is provided at the end of the pressure chamber (13), and the air exchange component (17) comprises a plurality of one-way air exchange valves.

2. The air pump for a breast pump according to claim 1, characterized in that: It also includes an eccentric wheel (15) driven by the output shaft of the motor (11), a driving connecting rod (12) drivingly connected to the eccentric wheel (15), and a vibration plate (16) connected to the eccentric wheel (15).

3. The air pump for a breast pump according to claim 1, characterized in that: The invention also includes a silent valve (2) connected to the pump body (1), wherein the silent valve (2) includes a valve body (21) and a silencer cavity (22) connected to the valve body (21), and the valve body (21) is provided with a communication port (23) communicating with the silencer cavity (22).

4. The air pump for a breast pump according to claim 3, characterized in that: An opening (24) is provided at one end of the muffler chamber (22) connected to the valve body (21), the valve body (21) is sealed on the opening (24), and the communication port (23) is in communication with the opening (24).

5. The air pump for a breast pump according to claim 3, characterized in that: A sealing groove (25) is provided at the opening (24) of the muffler cavity (22), and a sealing protrusion (26) matching the sealing groove (25) is provided on the valve body (21).

6. The air pump for a breast pump according to claim 3, characterized in that: It also includes a cover plate (3) arranged on the pump body (1), wherein the cover plate (3) is provided with a ventilation channel (31) communicating with the muffler chamber (22).

7. The air pump for a breast pump according to claim 3, characterized in that: The inner wall of the silencer cavity (22) is provided with a silencer.

8. The air pump for a breast pump according to claim 6, characterized in that: The muffler cavity (22) and the cover plate (3) are integrally formed.

9. A breast pump, characterized in that: The air pump for a breast pump comprises the air pump according to any one of claims 1 to 8.

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