Air pump structure

Abstract

This utility model discloses an air pump structure designed to address the shortcomings of air pumps, such as frequent air leakage and poor motor heat dissipation. The utility model includes a body containing an air chamber and a mounting cavity. An impeller is installed within the air chamber, dividing it into a main air chamber and an auxiliary air chamber. Main blades are mounted on the upper surface of the impeller, and auxiliary blades are mounted on the lower surface. The main blades are placed in the main air chamber, and the auxiliary blades are placed in the auxiliary air chamber. Radially arranged air outlets are provided on the body, communicating with the air chamber. Heat dissipation holes communicating with the mounting cavity are provided on the inner wall of the auxiliary air chamber. The air pump structure of this patent application is less prone to air leakage and provides excellent motor heat dissipation.

Description

Technical Field

[0001] This utility model relates to an air pumping device, and more specifically, to an air pump structure. Background Technology

[0002] Inflatable products are common items in daily life. They are inflated for use and deflated for storage, offering flexibility and convenience. To facilitate inflation, air pumps are often used, not only making inflation easier but also speeding it up. Currently, air pumps often feature an off-center air outlet design, formed by the snap-fit ​​of the top cover and upper shell. Because the outer seam of the outlet is far from the screw holes, the internal air pressure is high, making air leakage prone to occur. Furthermore, the motor's heat dissipation is poor, affecting performance. For example, Chinese patent application number 2023209487332 discloses a portable mini electric pump with an off-center air outlet design. The outer seam of the outlet, being far from the screw holes, results in high internal air pressure, making air leakage prone to occur, and the motor's heat dissipation is poor, affecting performance. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides an air pump structure that is less prone to air leakage and has good heat dissipation for the motor.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an air pump structure, including a body, an air chamber and an installation cavity are provided in the body, an impeller is installed in the air chamber to divide the air chamber into a main air chamber and an auxiliary air chamber, a main blade is provided on the upper surface of the impeller, an auxiliary blade is provided on the lower surface of the impeller, the main blade is placed in the main air chamber, and the auxiliary blade is placed in the auxiliary air chamber; a radially arranged air outlet is provided on the body, the air outlet is connected to the air chamber, and a heat dissipation hole connected to the installation cavity is provided on the inner wall of the auxiliary air chamber.

[0005] The radial arrangement of the air outlets ensures equal lengths at the seams on both sides, resulting in balanced stress on both sides. This allows for a shorter outlet length and reduces the likelihood of air leakage. The auxiliary air chamber has ventilation holes communicating with the mounting cavity. The motor is installed in the mounting cavity, and during impeller rotation, auxiliary blades move within the auxiliary air chamber, causing airflow from the mounting cavity to pass through the ventilation holes into the auxiliary air chamber. This improves the heat dissipation of the motor within the mounting cavity, thereby reducing energy consumption. The air pump structure described in this patent application is less prone to air leakage, and the motor exhibits excellent heat dissipation.

[0006] Preferably, a volute is formed between the outer periphery of the impeller and the inner wall of the air chamber. The width of the volute gradually increases from one end to the other along the circumference, and the air outlet is located at the end with the larger width of the volute.

[0007] The spiral air duct design facilitates rapid airflow, ensuring the pump's suction and exhaust performance.

[0008] Preferably, the impeller is provided with pressure equalization holes, which are connected between the main gas chamber and the auxiliary gas chamber.

[0009] The installation of pressure equalization holes helps to ensure the balance of air pressure in the main air chamber and the auxiliary air chamber, and improves the air output effect of the air outlet.

[0010] Preferably, the upper part of the body is provided with a connecting seat and a top cover. An air duct ring is provided on the top cover. The air duct ring is pressed against the connecting seat to form an air chamber. Several fastening points that connect to the connecting seat are arranged at intervals around the outer periphery of the air duct ring.

[0011] After the top cover is connected to the connecting seat, the air duct ring is placed between the top cover and the connecting seat to form an air chamber. The fastening points are circumferentially spaced around the air duct ring to ensure the reliability of the connection between the top cover and the connecting seat and to prevent air leakage between the top cover and the connecting seat.

[0012] Preferably, a sealing groove is provided on the surface of the connector, and the edge of the air duct ring is tightly installed in the sealing groove.

[0013] The sealing groove not only positions the air duct ring, but also helps to increase the sealing performance after the air duct ring is connected to the connecting seat.

[0014] Preferably, a connecting post is provided on the top cover, which serves as a fastening point, and a connecting rib plate is provided between the connecting post and the air duct ring.

[0015] The connecting post serves as a fastening point, facilitating the connection between the top cover and the connecting seat. The ribs enhance the structural strength of the fastening point, ensuring the reliability of the connection.

[0016] As a preferred option, several reinforcing plates are connected between the outer wall of the air duct ring and the edge of the top cover.

[0017] The addition of reinforcing plates helps to improve the structural strength of the air duct ring, thereby preventing air leakage in the air chamber.

[0018] Preferably, the body is provided with an air inlet that communicates with the air chamber, and a limiting post protruding outward is provided on the side wall of the air inlet.

[0019] Airflow enters the air chamber through the air inlet. When the air pump evacuates the inflatable product, it connects the inflatable product to the air inlet. The setting of the limiting post facilitates the connection and positioning of the air inlet and the inflatable product.

[0020] As a preferred option, a connecting ring is provided at the air outlet, and an outwardly protruding anti-detachment pin is provided on the outer wall of the connecting ring.

[0021] The air outlet is equipped with a connecting ring for easy connection to inflatable products. After the inflatable product is connected to the connecting ring, it is limited by an anti-detachment pin to prevent the inflatable product from detaching from the connecting ring.

[0022] Another option is to install a connecting ring at the air outlet, with a recessed quick-connect groove on the end face of the connecting ring.

[0023] The connecting ring is equipped with a quick-connect groove, allowing inflatable products to be directly inserted into the quick-connect groove for easy connection.

[0024] Compared with the prior art, the beneficial effects of this utility model are: (1) the air pump structure of this patent application is not prone to air leakage, and the heat dissipation effect of the motor is good; (2) the setting of the spiral air duct is conducive to the rapid airflow, ensuring the air pump's suction and exhaust effects; (3) the fastening points are circumferentially spaced around the air duct ring, ensuring the reliability of the connection between the top cover and the connecting seat, and preventing air leakage between the top cover and the connecting seat. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0026] Figure 2 This is a cross-sectional view of Embodiment 1 of this utility model.

[0027] Figure 3 This is an exploded view of Embodiment 1 of this utility model.

[0028] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0029] Figure 5 This is a cross-sectional view of Embodiment 2 of this utility model.

[0030] In the diagram: 1. Body, 2. Air chamber, 3. Mounting cavity, 4. Main air chamber, 5. Auxiliary air chamber, 6. Motor, 7. Circuit board, 8. Main blade, 9. Auxiliary blade, 10. Air outlet, 11. Heat dissipation hole, 12. Pressure equalization hole, 13. Spiral air duct, 14. Connecting seat, 15. Top cover, 16. Air duct ring, 17. Sealing groove, 18. Connecting column, 19. Rib plate, 20. Reinforcing plate, 21. Air inlet, 22. Limiting device 23. Column, 24. Protective grille, 25. Cylinder body, 26. Positioning ring, 27. Positioning strip, 28. Positioning slot, 29. Connecting ear, 30. Vent hole, 31. Connecting ring, 32. Anti-detachment pin, 33. Upper half ring, 34. Insert strip, 35. Long strip groove, 36. Upper limit block, 37. Lower limit block, 38. Quick-connect ring groove, 39. Transition ring, 40. Upper ring body, 41. Lower ring body, 42. Sinking groove. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0032] Example 1: An air pump structure (see...) Figure 1, Figure 2 , Figure 3 The device includes a body 1, an air chamber 2 and an installation cavity 3 inside the body 1. An impeller is installed in the air chamber 2, dividing the air chamber 2 into a main air chamber 4 and an auxiliary air chamber 5. The main air chamber 4 is located above the auxiliary air chamber 5. A motor 6 and a circuit board 7 are installed in the installation cavity 3. The impeller is mounted on the output shaft of the motor 6. Main blades 8 are arranged on the upper surface of the impeller, and auxiliary blades 9 are arranged on the lower surface of the impeller. Nine main blades 8 are evenly distributed around the circumference. The main blades 8 have an arc-shaped structure and are arranged radially away from the center. Three auxiliary blades 9 are evenly distributed around the circumference. The auxiliary blades have an arc-shaped structure and are arranged radially away from the center. The axial width of the auxiliary blades 9 is smaller than the axial width of the main blades 8. The axial width of the main blades 8 gradually decreases in the direction away from the center, and the axial width of the auxiliary blades 9 also gradually decreases in the direction away from the center. Both the main blade 8 and the auxiliary blade 9 are integrally formed with the impeller. The main blade 8 is placed in the main air chamber 4, and the auxiliary blade 9 is placed in the auxiliary air chamber 5. A radially arranged air outlet 10 is provided on the body 1, communicating with the air chamber 2. A heat dissipation hole 11 communicating with the mounting cavity 3 is provided on the inner wall of the auxiliary air chamber 5. The impeller is provided with equalizing holes 12, which connect the main air chamber 4 and the auxiliary air chamber 5. An equalizing hole 12 is provided between each adjacent main blade 8. The equalizing holes 12 help ensure the pressure balance within the main air chamber 4 and the auxiliary air chamber 5, improving the air output effect of the air outlet 10.

[0033] A volute-shaped air duct 13 is formed between the outer periphery of the impeller and the inner wall of the air chamber 2. The width of the volute-shaped air duct 13 gradually increases from one end to the other along the circumference. The air outlet 10 is located at the wider end of the volute-shaped air duct 13. The volute-shaped air duct 13 facilitates rapid airflow and ensures the pump's suction and exhaust effects.

[0034] The upper part of the body 1 is provided with a connecting seat 14 and a top cover 15. An air duct ring 16 is provided on the top cover 15, and the air duct ring 16 is pressed against the connecting seat 14 to form an air chamber 2. Several fastening points that connect to the connecting seat 14 are spaced apart around the periphery of the air duct ring 16. A notch is provided on the air duct ring 16, and the notch is connected to the air outlet 10. Fastening points are provided on both sides of the notch, thereby improving the reliability of the connection between the top cover 15 and the connecting seat 14 and improving the sealing performance of the air outlet 10. A sealing groove 17 is provided on the surface of the connecting seat 14, and the edge of the air duct ring 16 is tightly installed in the sealing groove 17.

[0035] After the upper cover 15 is connected to the connecting seat 14, the air duct ring 16 is placed between the upper cover 15 and the connecting seat 14 to form an air chamber 2. The fastening points are circumferentially spaced around the air duct ring 16 to ensure the reliability of the connection between the upper cover 15 and the connecting seat 14 and to prevent air leakage between them. The sealing groove 17 not only positions the air duct ring 16 but also helps to increase the sealing performance after the air duct ring 16 is connected to the connecting seat 14.

[0036] A connecting post 18 is provided on the upper cover 15, serving as a fastening point. A reinforcing rib 19 connects the connecting post 18 and the air duct ring 16. Several reinforcing plates 20 are connected between the outer wall of the air duct ring 16 and the edge of the upper cover 15. Fastening screws are connected to the connecting seat 14, and these screws are securely fastened to the connecting post 18, thus securing the upper cover 15 and the connecting seat 14. The connecting post 18 serves as a fastening point, facilitating the connection between the upper cover 15 and the connecting seat 14. The reinforcing rib 19 enhances the structural strength of the fastening point, ensuring reliable connection. The reinforcing plates 20 improve the structural strength of the air duct ring 16, preventing air leakage in the air chamber 2.

[0037] An air inlet 21 communicating with the air chamber 2 is provided on the body 1, and a limiting post 22 protruding outward is provided on the side wall of the air inlet 21. The air inlet 21 is located in the middle of the upper cover 15, and a protective grille 23 is provided at the bottom of the air inlet 21. Airflow enters the air chamber 2 through the air inlet 21. When the air pump evacuates the inflatable product, it connects the inflatable product to the air inlet 21. The limiting post 22 facilitates the connection and positioning between the air inlet 21 and the inflatable product.

[0038] The connecting seat 14 secures the connecting cylinder 24, forming an installation cavity 3 within the cylinder 24. A positioning ring 25 is positioned at the center of the lower surface of the connecting seat 14, and the upper part of the motor 6 is fitted into the positioning ring 25. Several pairs of positioning strips 26 are provided on the lower surface of the connecting seat 14, with a positioning slot 27 between each pair of positioning strips 26. The positioning slot 27 is fitted into the upper edge of the cylinder 24. Several connecting ears 28 are spaced circumferentially along the upper edge of the cylinder 24, corresponding to the connecting posts 18. Fastening screws are connected to the connecting ears 28, pass through the connecting seat 14, and are securely connected to the connecting posts 18, thereby securely connecting the cylinder 24, the connecting seat 14, and the upper cover 15 together. Multiple vent holes 29 are provided at the bottom of the cylinder 24, allowing external airflow to enter the installation cavity 3 for heat dissipation of the motor 6.

[0039] A connecting ring 30 is provided at the air outlet 10, and an outwardly protruding anti-detachment pin 31 is provided on the outer wall of the connecting ring 30. The anti-detachment pin 31 is located at the upper circumferential position of the connecting ring 30. The connecting ring 30 includes an upper half ring 32 and a lower half ring 33. The upper half ring 32 is placed on the upper cover 15, and the lower half ring 33 is placed on the connecting seat 14. The upper half ring 32 and the lower half ring 33 are tightly joined to form the connecting ring 30. The two edges of the upper half ring 32 are provided with protruding inserts 34, and the two edges of the lower half ring 33 are provided with elongated grooves 35 that correspond to and fit the inserts 34. After the upper half ring 32 and the lower half ring 33 are joined, the inserts 34 fit into the elongated grooves 35 for insertion and connection, making the connection between the upper half ring 32 and the lower half ring 33 more reliable. Two upper limit blocks 36 are provided on the inner wall of the upper half ring 32, and two lower limit blocks 37 are provided on the inner wall of the lower half ring 33. The upper limit blocks 36 and the lower limit blocks 37 are correspondingly provided. When the inflatable product or connecting tube is connected to the connecting ring 30, the upper limit block 36 and the lower limit block 37 play a limiting role to prevent excessive insertion depth from affecting the airflow.

[0040] The air outlet 10 is radially arranged, ensuring equal length of the seams on both sides and balanced force distribution. This allows for a shorter length of the air outlet 10, reducing the likelihood of air leakage. The inner wall of the auxiliary air chamber 2 has heat dissipation holes 11 that communicate with the mounting cavity 3. The motor 6 is installed in the mounting cavity 3. During impeller rotation, the auxiliary blades 9 rotate within the auxiliary air chamber 5, causing airflow from the mounting cavity 3 to flow through the heat dissipation holes 11 into the auxiliary air chamber 5. This improves the heat dissipation of the motor 6 within the mounting cavity 3, thereby reducing energy consumption. The air pump structure of this patent application is less prone to air leakage, and the motor 6 exhibits excellent heat dissipation.

[0041] Example 2: An air pump structure (see...) Figure 4 , Figure 5The device includes a body 1, an air chamber 2 and an installation cavity 3 inside the body 1. An impeller is installed in the air chamber 2, dividing the air chamber 2 into a main air chamber 4 and an auxiliary air chamber 5. The main air chamber 4 is located above the auxiliary air chamber 5. A motor 6 and a circuit board 7 are installed in the installation cavity 3. The impeller is mounted on the output shaft of the motor 6. Main blades 8 are arranged on the upper surface of the impeller, and auxiliary blades 9 are arranged on the lower surface of the impeller. Nine main blades 8 are evenly distributed around the circumference. The main blades 8 have an arc-shaped structure and are arranged radially away from the center. Three auxiliary blades 9 are evenly distributed around the circumference. The auxiliary blades have an arc-shaped structure and are arranged radially away from the center. The axial width of the auxiliary blades 9 is smaller than the axial width of the main blades 8. The axial width of the main blades 8 gradually decreases in the direction away from the center, and the axial width of the auxiliary blades 9 also gradually decreases in the direction away from the center. Both the main blade 8 and the auxiliary blade 9 are integrally formed with the impeller. The main blade 8 is placed in the main air chamber 4, and the auxiliary blade 9 is placed in the auxiliary air chamber 5. A radially arranged air outlet 10 is provided on the body 1, communicating with the air chamber 2. A heat dissipation hole 11 communicating with the mounting cavity 3 is provided on the inner wall of the auxiliary air chamber 5. The impeller is provided with equalizing holes 12, which connect the main air chamber 4 and the auxiliary air chamber 5. An equalizing hole 12 is provided between each adjacent main blade 8. The equalizing holes 12 help ensure the pressure balance within the main air chamber 4 and the auxiliary air chamber 5, improving the air output effect of the air outlet 10.

[0042] A volute-shaped air duct 13 is formed between the outer periphery of the impeller and the inner wall of the air chamber 2. The width of the volute-shaped air duct 13 gradually increases from one end to the other along the circumference. The air outlet 10 is located at the wider end of the volute-shaped air duct 13. The volute-shaped air duct 13 facilitates rapid airflow and ensures the pump's suction and exhaust effects.

[0043] The upper part of the body 1 is provided with a connecting seat 14 and a top cover 15. An air duct ring 16 is provided on the top cover 15, and the air duct ring 16 is pressed against the connecting seat 14 to form an air chamber 2. Several fastening points that connect to the connecting seat 14 are spaced apart around the periphery of the air duct ring 16. A notch is provided on the air duct ring 16, and the notch is connected to the air outlet 10. Fastening points are provided on both sides of the notch, thereby improving the reliability of the connection between the top cover 15 and the connecting seat 14 and improving the sealing performance of the air outlet 10. A sealing groove 17 is provided on the surface of the connecting seat 14, and the edge of the air duct ring 16 is tightly installed in the sealing groove 17.

[0044] After the upper cover 15 is connected to the connecting seat 14, the air duct ring 16 is placed between the upper cover 15 and the connecting seat 14 to form an air chamber 2. The fastening points are circumferentially spaced around the air duct ring 16 to ensure the reliability of the connection between the upper cover 15 and the connecting seat 14 and to prevent air leakage between them. The sealing groove 17 not only positions the air duct ring 16 but also helps to increase the sealing performance after the air duct ring 16 is connected to the connecting seat 14.

[0045] A connecting post 18 is provided on the upper cover 15, serving as a fastening point. A reinforcing rib 19 connects the connecting post 18 and the air duct ring 16. Several reinforcing plates 20 are connected between the outer wall of the air duct ring 16 and the edge of the upper cover 15. Fastening screws are connected to the connecting seat 14, and these screws are securely fastened to the connecting post 18, thus securing the upper cover 15 and the connecting seat 14. The connecting post 18 serves as a fastening point, facilitating the connection between the upper cover 15 and the connecting seat 14. The reinforcing rib 19 enhances the structural strength of the fastening point, ensuring reliable connection. The reinforcing plates 20 improve the structural strength of the air duct ring 16, preventing air leakage in the air chamber 2.

[0046] An air inlet 21 communicating with the air chamber 2 is provided on the body 1, and a limiting post 22 protruding outward is provided on the side wall of the air inlet 21. The air inlet 21 is located in the middle of the upper cover 15, and a protective grille 23 is provided at the bottom of the air inlet 21. Airflow enters the air chamber 2 through the air inlet 21. When the air pump evacuates the inflatable product, it connects the inflatable product to the air inlet 21. The limiting post 22 facilitates the connection and positioning between the air inlet 21 and the inflatable product.

[0047] The connecting seat 14 secures the connecting cylinder 24, forming an installation cavity 3 within the cylinder 24. A positioning ring 25 is positioned at the center of the lower surface of the connecting seat 14, and the upper part of the motor 6 is fitted into the positioning ring 25. Several pairs of positioning strips 26 are provided on the lower surface of the connecting seat 14, with a positioning slot 27 between each pair of positioning strips 26. The positioning slot 27 is fitted into the upper edge of the cylinder 24. Several connecting ears 28 are spaced circumferentially along the upper edge of the cylinder 24, corresponding to the connecting posts 18. Fastening screws are connected to the connecting ears 28, pass through the connecting seat 14, and are securely connected to the connecting posts 18, thereby securely connecting the cylinder 24, the connecting seat 14, and the upper cover 15 together. Multiple vent holes 29 are provided at the bottom of the cylinder 24, allowing external airflow to enter the installation cavity 3 for heat dissipation of the motor 6.

[0048] A connecting ring 30 is provided at the air outlet 10, and a recessed quick-connect groove 38 is provided on the end face of the connecting ring 30. The quick-connect groove 38 on the connecting ring 30 allows the inflatable product to be directly inserted into the quick-connect groove 38 for easy connection. A transition ring 39 is provided between the connecting ring 30 and the air outlet 10. The transition ring 39 includes an upper ring body 40 and a lower ring body 41. The upper ring body 40 is set on the upper cover 15 and is an integral structure with the upper cover 15. The lower ring body 41 is set between the connecting ring 30 and the connecting seat 14. The connecting ring 30, the lower ring body 41, and the connecting seat 14 are an integral structure. A recessed groove 42 adapted to the upper ring body 40 is provided on the end face of the connecting ring 30, and the end of the upper ring body 40 is inserted into the recessed groove 42 for positioning. Two upper limit blocks 36 are provided on the inner wall of the upper ring 40, and two lower limit blocks 37 are provided on the inner wall of the lower ring 41. The upper limit blocks 36 and lower limit blocks 37 are provided correspondingly. When the inflatable product or connecting pipe is connected to the connecting ring 30, the upper limit blocks 36 and lower limit blocks 37 play a limiting role to prevent excessive insertion depth from affecting the airflow.

[0049] The air outlet 10 is radially arranged, ensuring equal length of the seams on both sides and balanced force distribution. This allows for a shorter length of the air outlet 10, reducing the likelihood of air leakage. The inner wall of the auxiliary air chamber 2 has heat dissipation holes 11 that communicate with the mounting cavity 3. The motor 6 is installed in the mounting cavity 3. During impeller rotation, the auxiliary blades 9 rotate within the auxiliary air chamber 5, causing airflow from the mounting cavity 3 to flow through the heat dissipation holes 11 into the auxiliary air chamber 5. This improves the heat dissipation of the motor 6 within the mounting cavity 3, thereby reducing energy consumption. The air pump structure of this patent application is less prone to air leakage, and the motor 6 exhibits excellent heat dissipation.

[0050] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. An air pump structure, characterized in that, The device includes a body, which contains an air chamber and an installation cavity. An impeller is installed in the air chamber to divide the air chamber into a main air chamber and an auxiliary air chamber. Main blades are installed on the upper surface of the impeller, and auxiliary blades are installed on the lower surface of the impeller. The main blades are placed in the main air chamber, and the auxiliary blades are placed in the auxiliary air chamber. Radially arranged air outlets are provided on the body, which are connected to the air chamber. Heat dissipation holes connected to the installation cavity are provided on the inner wall of the auxiliary air chamber.

2. The air pump structure according to claim 1, characterized in that, A volute-shaped air duct is formed between the outer periphery of the impeller and the inner wall of the air chamber. The width of the volute-shaped air duct gradually increases from one end to the other along the circumference. The air outlet is located at the end with the larger width of the volute-shaped air duct.

3. The air pump structure according to claim 1, characterized in that, The impeller is equipped with pressure equalization holes, which connect the main gas chamber and the auxiliary gas chamber.

4. The air pump structure according to claim 1, characterized in that, The upper part of the machine body is equipped with a connecting seat and a top cover. An air duct ring is installed on the top cover. The air duct ring is pressed against the connecting seat to form an air chamber. Several fastening points that connect to the connecting seat are arranged at intervals around the outer periphery of the air duct ring.

5. The air pump structure according to claim 4, characterized in that, A sealing groove is provided on the surface of the connector, and the edge of the air duct ring is tightly installed in the sealing groove.

6. The air pump structure according to claim 4, characterized in that, A connecting column is installed on the top cover, which serves as a fastening point. A connecting rib plate connects the connecting column and the air duct ring.

7. The air pump structure according to claim 4, characterized in that, Several reinforcing plates are connected between the outer wall of the air duct ring and the edge of the top cover.

8. The air pump structure according to claim 1, characterized in that, The body is equipped with an air inlet that communicates with the air chamber, and a limiting post protruding outward is provided on the side wall of the air inlet.

9. An air pump structure according to any one of claims 1 to 8, characterized in that, A connecting ring is installed at the air outlet, and an outward-protruding anti-detachment pin is installed on the outer wall of the connecting ring.

10. An air pump structure according to any one of claims 1 to 8, characterized in that, A connecting ring is installed at the air outlet, and a recessed quick-connect groove is provided on the end face of the connecting ring.

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