Inflatable pump brushless movement

Abstract

This utility model discloses a brushless air pump mechanism, including a bracket. A brushless motor is fixedly installed at one end of the bracket, and a cylinder is fixedly installed at the other end of the bracket. A piston rod is arranged inside the cylinder, which repeatedly inflates the pump through reciprocating motion. The brushless motor drives the piston rod to reciprocate horizontally through a gear transmission assembly. A cylinder cover communicating with the cylinder is fixedly installed at the air outlet end of the cylinder. An integrated snap-fit ​​connector is provided on the cylinder cover. A detachable and rotatable air tube assembly is connected to the end of the snap-fit ​​connector. This utility model designs a rotatable and flexibly detachable air tube assembly, ensuring that the air tube assembly can be quickly separated from the main body of the mechanism when carried, and can be quickly assembled when in use, making it more convenient and flexible. Furthermore, the connection between the air tube assembly and the main body of the mechanism can rotate 360 ​​degrees, allowing the direction of the air tube assembly to be changed arbitrarily for convenient inflation.

Description

Technical Field

[0001] This utility model belongs to the field of air pump technology, specifically relating to a brushless air pump mechanism. Background Technology

[0002] An air pump, also called a tire inflator or tire pump, works by rotating a motor. When pumping air out, the check valve on the piston is opened by atmospheric pressure, allowing air to enter the cylinder. When inflating, the check valve is closed by the pressure inside the cylinder, allowing air to enter the tire. Air pumps are widely used in automobiles, motorcycles, bicycles, and other vehicles.

[0003] Existing air inflators are generally fixed to the outlet end, which cannot be rotated flexibly or disassembled flexibly. Therefore, this utility model designs a new type of brushless air pump mechanism. Utility Model Content

[0004] The purpose of this invention is to provide a brushless motor mechanism for an air pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a brushless air pump mechanism, including a bracket, a brushless motor fixedly mounted at one end of the bracket, and a cylinder fixedly mounted at the other end of the bracket. A piston rod, which repeatedly inflates the pump through reciprocating motion, is disposed inside the cylinder. The brushless motor drives the piston rod to reciprocate horizontally via a gear transmission assembly. A cylinder cover, communicating with the cylinder, is fixedly disposed at the outlet end of the cylinder. A check valve assembly is disposed inside the cylinder cover. An integrally formed snap-fit ​​connector is disposed on the cylinder cover, and a detachable and rotatable air inflator assembly is connected to the end of the snap-fit ​​connector.

[0006] Preferably, the gear transmission assembly includes a drive gear fixedly mounted on the output end of the brushless motor, a driven gear mounted on a bracket by rotation, and a connecting rod shaft eccentrically mounted on the driven gear. One end of the piston connecting rod is sleeved on the connecting rod shaft. The drive gear and the driven gear mesh with each other for transmission. A retaining spring for limiting the position is engaged at the top end of the connecting rod shaft.

[0007] Preferably, the check valve assembly includes a check valve for blocking the cylinder outlet end, and a return spring disposed between the check valve and the cylinder head, wherein the check valve is attached to the outside of the cylinder outlet end by means of the return spring.

[0008] Preferably, the cylinder head is provided with an air inlet that is directly connected to the cylinder barrel, and the air inlet is provided with a one-way valve that allows only air to enter.

[0009] Preferably, the inflation tube assembly includes a main unit end air tube elbow that is connected to and rotatably engaged with the locking connector, a connecting rubber tube that is connected to the other end of the main unit end air tube elbow, and an air outlet elbow that is disposed at the other end of the connecting rubber tube. One end of the air outlet elbow is equipped with a bent pipe connector that is connected to the connecting rubber tube, and the other end of the air outlet elbow is provided with a nozzle.

[0010] Preferably, the nozzle assembly includes a nozzle core that is screwed and rotated inside the vent pipe elbow, a nozzle sleeve installed on the outside of the nozzle core, the nozzle sleeve being embedded in the inside of the vent pipe elbow, and the bottom end of the nozzle core communicating with the elbow connector.

[0011] Preferably, a sealing ring C and a sealing ring D are provided between the nozzle core and the air outlet elbow for sealing, a sealing ring F is provided at the connection between the nozzle sleeve and the nozzle core for sealing the gap, and a sealing ring B is provided at the connection between the elbow joint and the air outlet elbow for sealing.

[0012] Preferably, the end of the main unit end air pipe elbow is provided with a sleeve that engages with the snap-fit ​​connector. The sleeve is fitted onto the snap-fit ​​connector. A rubber sealing ring for sealing is provided between the snap-fit ​​connector and the sleeve. A sealing ring A is provided at the connection between the sleeve and the main unit end air pipe elbow for sealing.

[0013] Preferably, the connection between the connecting rubber tube and the air pipe elbow of the main unit, as well as the connection between the connecting rubber tube and the elbow joint, are provided with fastening rings for reinforcement.

[0014] Preferably, a fan blade for heat dissipation of the brushless motor is installed on the tail output shaft of the brushless motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model designs an inflatable tube assembly that can be rotated and flexibly disassembled, ensuring that the inflatable tube assembly can be quickly separated from the main body of the mechanism when carried, and can also be quickly assembled when in use, making it more convenient and flexible. In addition, the connection between the inflatable tube assembly and the main body of the mechanism can be rotated 360 degrees, allowing the direction of the inflatable tube assembly to be changed at will, making inflation convenient.

[0017] This utility model is equipped with a brushless motor and a smooth cylinder, which not only provides stable air pumping but also increases the service life of the mechanism.

[0018] Equipped with small fan blades, it can ensure stable air intake during operation, reduce the impact of temperature on the brushless motor, and guarantee its service life.

[0019] The cylinder head and snap-fit ​​connector are integrated into one structure, which reduces the complicated process in assembly and provides a fulcrum for the air inlet hose assembly to rotate 360 ​​degrees, thereby improving the stability of the air inlet hose assembly during use. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a front view structural diagram of the present utility model;

[0022] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0023] Figure 4 This is a partial cross-sectional view of the present invention.

[0024] In the diagram: 1. Bracket; 2. Brushless motor; 3. Fan blade; 4. Cylinder; 5. Cylinder head; 6. Main unit end air pipe elbow; 7. Connecting rubber hose; 8. Air outlet pipe elbow; 9. Nozzle fitting; 91. Nozzle sleeve; 92. Sealing ring C; 93. Nozzle core; 94. Sealing ring D; 95. Sealing ring F; 10. Piston connecting rod; 11. Connecting rod shaft; 12. Driven gear; 13. Snap ring; 14. Drive gear; 15. Check valve; 16. Return spring; 17. Sealing ring A; 18. Engaging connector; 19. Fastening ring; 20. Bend connector; 21. Sealing ring B. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figures 1 to 4This utility model provides a technical solution: a brushless air pump mechanism, including a bracket 1, a brushless motor 2 fixedly mounted at one end of the bracket 1, and a cylinder 4 fixedly mounted at the other end of the bracket 1. A piston rod 10, which repeatedly inflates the cylinder 4 through reciprocating motion, is installed inside the cylinder 4. The brushless motor 2 drives the piston rod 10 to reciprocate horizontally via a gear transmission assembly. A cylinder cover 5, communicating with the cylinder 4, is fixedly mounted at the outlet end of the cylinder 4. A check valve assembly is installed inside the cylinder cover 5. An integrated snap-fit ​​connector 18 is mounted on the cylinder cover 5, and a detachable and rotatable air tube assembly is connected to the end of the snap-fit ​​connector 18. The integrated structure of the cylinder cover 5 and the snap-fit ​​connector 18 reduces the complexity of the assembly process, provides a 360-degree rotatable fulcrum for the air tube assembly, and improves the stability of the air tube assembly during use. In this embodiment, preferably, the gear transmission assembly includes a driving gear 14 fixedly mounted on the output end of the brushless motor 2, a driven gear 12 rotatably mounted on the bracket 1 via 22, and a connecting rod shaft 11 eccentrically mounted on the driven gear 12. One end of the piston connecting rod 10 is sleeved on the connecting rod shaft 11. The driving gear 14 and the driven gear 12 mesh and transmit power to each other. A retaining spring 13 for limiting the position is engaged at the top end of the connecting rod shaft 11 to prevent longitudinal displacement of the piston connecting rod 10 and ensure that the piston connecting rod 10 always performs stable horizontal reciprocating motion. In this embodiment, preferably, the check valve assembly includes a check valve 15 for blocking the gas outlet of the cylinder 4, and a return spring 16 disposed between the check valve 15 and the cylinder head 5. The check valve 15 is attached to the outside of the gas outlet of the cylinder 4 through the return spring 16 to ensure that the charged gas does not flow back into the cylinder 4.

[0028] In this embodiment, preferably, the cylinder head 5 is provided with an air inlet that is directly connected to the cylinder barrel 4, and the air inlet is provided with a one-way valve that allows only air to enter, in order to facilitate air intake.

[0029] In this embodiment, preferably, the inflation tube assembly includes a main unit end air tube elbow 6 that is connected to and rotatably engaged with the snap-fit ​​connector 18, a connecting rubber tube 7 that is connected to the other end of the main unit end air tube elbow 6, an air outlet elbow 8 that is disposed at the other end of the connecting rubber tube 7, a bent pipe connector 20 that is connected to the connecting rubber tube 7 is installed at one end of the air outlet elbow 8, and a nozzle 9 is disposed at the other end of the air outlet elbow 8.

[0030] In this embodiment, preferably, the nozzle component 9 includes a nozzle core 93 that is screwed and rotated inside the air outlet elbow 8, a nozzle sleeve 91 installed outside the nozzle core 93, and the nozzle sleeve 91 embedded inside the air outlet elbow 8. The bottom end of the nozzle core 93 communicates with the elbow connector 20, allowing inflation of the inflatable device with the nozzle. In this embodiment, preferably, a sealing ring C92 and a sealing ring D94 are provided between the nozzle core 93 and the air outlet elbow 8 for sealing, a sealing ring F95 is provided at the connection between the nozzle sleeve 91 and the nozzle core 93 for sealing the gap, and a sealing ring B21 is provided at the connection between the elbow connector 20 and the air outlet elbow 8 for sealing. In this embodiment, preferably, the end of the main unit end air pipe elbow 6 is provided with a sleeve that engages with the snap-fit ​​connector 18. The sleeve is snap-fitted onto the snap-fit ​​connector 18, and a rubber sealing ring for sealing is provided between the snap-fit ​​connector 18 and the sleeve. A sealing ring A17 for sealing is provided at the connection between the sleeve and the main unit end air pipe elbow 6 in order to ensure good sealing performance.

[0031] In this embodiment, preferably, fastening rings 19 are provided at the connection points of the connecting rubber tube 7 and the air pipe elbow 6 at the main unit end, as well as at the connection points of the connecting rubber tube 7 and the elbow joint 20, to fasten the connection and prevent loosening and air leakage.

[0032] In this embodiment, preferably, a fan blade 3 for heat dissipation of the brushless motor 2 is installed on the tail output shaft of the brushless motor 2 in order to facilitate heat dissipation and ensure the service life of the brushless motor 2.

[0033] Although embodiments of the present invention have been shown and described in detail above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A brushless motor mechanism for an air pump, comprising a bracket (1), characterized in that: A brushless motor (2) is fixedly installed at one end of the bracket (1), and a cylinder (4) is fixedly installed at the other end of the bracket (1). A piston rod (10) is provided inside the cylinder (4) for repeated inflation through reciprocating motion. The brushless motor (2) drives the piston rod (10) to reciprocate horizontally through a gear transmission assembly. A cylinder cover (5) is fixedly installed at the outlet end of the cylinder (4) and communicates with the cylinder (4). A check valve assembly is provided inside the cylinder cover (5). An integral snap-fit ​​connector (18) is provided on the cylinder cover (5). A detachable and rotatable inflation tube assembly is connected to the end of the snap-fit ​​connector (18).

2. The brushless motor mechanism of an air pump according to claim 1, characterized in that: The gear transmission assembly includes a drive gear (14) fixedly mounted on the output end of the brushless motor (2), a driven gear (12) rotatably mounted on the bracket (1) via (22), and a connecting rod shaft (11) eccentrically mounted on the driven gear (12). One end of the piston connecting rod (10) is sleeved on the connecting rod shaft (11). The drive gear (14) and the driven gear (12) mesh with each other for transmission. A retaining ring (13) for limiting the position is engaged at the top end of the connecting rod shaft (11).

3. The brushless motor mechanism of an air pump according to claim 1, characterized in that: The check valve assembly includes a check valve (15) for blocking the outlet end of the cylinder (4) and a return spring (16) disposed between the check valve (15) and the cylinder head (5). The check valve (15) is attached to the outside of the outlet end of the cylinder (4) by the return spring (16).

4. The brushless motor mechanism of an air pump according to claim 1, characterized in that: The cylinder head (5) is provided with an air inlet that is directly connected to the cylinder barrel (4), and the air inlet is provided with a one-way valve that allows only air to enter.

5. The brushless motor mechanism of an air pump according to claim 1, characterized in that: The inflation tube assembly includes a main unit end air tube elbow (6) that is connected to and rotatably engaged with the snap-fit ​​connector (18), a connecting rubber tube (7) that is connected to the other end of the main unit end air tube elbow (6), an air outlet elbow (8) that is located at the other end of the connecting rubber tube (7), a bend connector (20) that is connected to the connecting rubber tube (7) that is installed at one end of the air outlet elbow (8), and a nozzle (9) that is located at the other end of the air outlet elbow (8).

6. The brushless motor mechanism of an air pump according to claim 5, characterized in that: The nozzle component (9) includes a nozzle core (93) that is installed in the air outlet elbow (8) by threaded rotation, a nozzle sleeve (91) installed on the outside of the nozzle core (93), the nozzle sleeve (91) being embedded in the inside of the air outlet elbow (8), and the bottom end of the nozzle core (93) being connected to the elbow joint (20).

7. The brushless motor mechanism of an air pump according to claim 6, characterized in that: A sealing ring C (92) and a sealing ring D (94) are provided between the nozzle core (93) and the air outlet elbow (8) for sealing. A sealing ring F (95) is provided at the connection between the nozzle sleeve (91) and the nozzle core (93) for sealing the gap. A sealing ring B (21) is provided at the connection between the elbow joint (20) and the air outlet elbow (8) for sealing.

8. The brushless motor mechanism of an air pump according to claim 5, characterized in that: The end of the main unit end air pipe elbow (6) is provided with a sleeve that engages with the snap-fit ​​connector (18). The sleeve is snap-fitted onto the snap-fit ​​connector (18). A rubber sealing ring for sealing is provided between the snap-fit ​​connector (18) and the sleeve. A sealing ring A (17) for sealing is provided at the connection between the sleeve and the main unit end air pipe elbow (6).

9. The brushless motor mechanism of an air pump according to claim 5, characterized in that: The connection points of the connecting rubber tube (7) and the main unit end air pipe elbow (6) and the connection points of the connecting rubber tube (7) and the elbow joint (20) are all provided with fastening rings (19) for reinforcement.

10. The brushless motor mechanism of an air pump according to claim 1, characterized in that: The brushless motor (2) has a fan blade (3) installed on the tail output shaft for heat dissipation.

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