Multifunctional high-pressure mini air pump

Abstract

The utility model discloses a multifunctional high-pressure mini air pump, and belongs to the technical field of air pumps. Comprising a pump shell, a battery, a motor, a crankshaft, a piston rod and an air cylinder, an air exhaust connector and an air outlet connector are formed in the pump shell, the motor is arranged at the air exhaust connector, and the battery is arranged on one side of the motor and electrically connected with the motor; the output end of the motor is provided with a crankshaft, the other end of the motor is further provided with an air exhaust blade synchronously rotating with the output end, one end of the piston rod is rotationally connected with the crankshaft, the other end of the piston rod extends into the air cylinder, the piston rod can be driven by the crankshaft to do compression motion in the air cylinder, and the air cylinder is communicated with the air outlet connector. A one-way valve for preventing gas from flowing back is further arranged at the gas outlet connector; the multifunctional air pump can cover the vast majority of air inflation scenes on the market, can support high-pressure air inflation of about 150 PSI, has the air exhaust function while guaranteeing the small size, and greatly improves the flexibility and convenience of the air pump.

Description

Technical Field

[0001] This utility model relates to an air pump, and more particularly to a multifunctional high-pressure mini air pump, belonging to the field of air pump technology. Background Technology

[0002] An air pump is a device that removes air from or adds air to a closed space. Air pumps are mainly divided into electric air pumps, manual air pumps, and foot-operated air pumps. Electric air pumps: These are air pumps powered by electricity, which continuously compresses air to generate pressure.

[0003] Current electric air pumps have relatively limited functionality. For objects with varying standard air pressures, such as car tires, bicycle tires, air mattresses, and paddleboards, the mainstream solution is to use different electric air pumps to handle the different standard air pressures. Low-pressure air pumps can be used for low-pressure objects like air mattresses, paddleboards, and inflatable boats, but high-pressure air pumps are necessary for objects requiring high pressure, such as car tires. While each type of air pump has strong single-function capabilities, this also limits its application range and scenarios, significantly reducing its applicability and flexibility. Furthermore, some current technologies use integrated pumps for air extraction, but while these pumps offer high extraction efficiency, they are also relatively large, preventing the overall design from becoming compact and convenient.

[0004] For example, Chinese utility model patent application number 202420286642.1 discloses a built-in air pump for lithium batteries, and Chinese invention patent application application number 202411217942.5 discloses a hydraulic charging and suction integrated air pump; both have charging and suction functions, but their structures are relatively complex and not lightweight.

[0005] If there were a multi-functional air pump that could achieve high air pressure and be used in multiple scenarios while maintaining a small size, it would greatly improve the flexibility and convenience of air pumps. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a multifunctional high-pressure mini air pump.

[0007] The technical solution adopted in this utility model is as follows: a multifunctional high-pressure mini air pump is designed, which includes a pump housing, a battery, a motor, a crankshaft, a piston rod, and a cylinder. The pump housing is provided with an air intake port and an air outlet port. The motor is located at the air intake port, and the battery is located on one side of the motor and the two are electrically connected. The crankshaft is located at the output end of the motor, and the other end of the motor is also provided with an air intake blade that rotates synchronously with the output end. One end of the piston rod is rotatably connected to the crankshaft, and the other end extends into the cylinder. The piston rod can perform compression motion in the cylinder under the drive of the crankshaft. The cylinder is connected to the air outlet port, and a one-way valve to prevent gas backflow is also provided at the air outlet port.

[0008] Furthermore, a rotor is provided at one end of the motor near the air extraction port, and the air extraction blades are provided on the rotor. Multiple air extraction blades are arranged in a circumferential array on the rotor.

[0009] Furthermore, a boss is provided on the pump casing at the air extraction port, the rotor abuts against the boss, and multiple air extraction holes are provided around the boss, the air extraction holes being connected to the air extraction port.

[0010] Furthermore, the crankshaft includes a wheel and a fixed column disposed on the wheel, and the piston rod is provided with a rotary hole at the end connected to the crankshaft, and the rotary hole is rotatably connected to the fixed column.

[0011] Furthermore, a bearing is also provided between the rotary hole and the fixed column.

[0012] Furthermore, the suction blades are arranged vertically or inclined to the end surface of the motor.

[0013] Furthermore, this design also includes a control system, which includes a pressure sensor, a control unit, a display unit, and an inflation mode setting unit;

[0014] The pressure sensor is used to detect the air pressure inside the pump casing and feed it back to the control unit;

[0015] The inflation mode setting unit is used to set the inflation mode of the air pump, including car tire inflation mode, bicycle tire inflation mode, air mattress inflation mode, paddleboard inflation mode and inflatable boat inflation mode.

[0016] The display unit is used to display the real-time inflation mode and inflation pressure;

[0017] The control unit is used to control the air pump to automatically inflate the item to be inflated in the inflation mode set by the inflation mode setting unit.

[0018] Furthermore, the display unit includes a display screen mounted on the pump housing, and the inflation mode setting unit includes input buttons mounted on the pump housing.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention utilizes a high-power brushless motor, which directly drives the piston rod via the crankshaft. This design features a simple structure and more reliable transmission. The combination of the high-power brushless motor and a cylinder (of a specific size) enables high-pressure (approximately 150 psi) inflation output. Simultaneously, it simplifies the air pump's structure, reduces its size, and makes it more convenient to use and carry. Furthermore, an air extraction port is provided on the air pump, and blades that rotate with the motor's output end are added to the motor, giving the air pump an additional suction function. Compared to ordinary inflation air pumps, this invention only adds blades to the motor's tail end and an air extraction port at a corresponding position on the pump housing, having a negligible impact on the air pump's size. This allows the air pump to be more powerful while maintaining a small and compact size.

[0021] In addition, existing air pumps require manual setting of air pressure values, while this invention has preset standard air pressures for various common objects in the program. You only need to select the type of object you want to inflate without manually adjusting the air pressure, which reduces the complexity of operation.

[0022] This invention can cover most of the inflatable scenarios on the market, and can also have the function of deflation and support high air pressure (about 150 PSI) inflation while ensuring a small size. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the isometric view of this utility model.

[0025] Figure 2 This is a side view of the present invention.

[0026] Figure 3 This is a schematic cross-sectional view of the present invention.

[0027] Figure 4 This is an exploded view of the present invention.

[0028] Figure 5 This is a schematic diagram of the motor of this utility model.

[0029] Figure 6 This is a schematic diagram of the piston rod of this utility model.

[0030] In the diagram: 1. Pump housing; 2. Battery; 3. Motor; 4. Crankshaft; 5. Piston rod; 6. Cylinder; 7. Suction port; 8. Exhaust port; 9. Suction vane; 10. Check valve; 11. Rotor; 12. Boss; 13. Suction port; 14. Wheel; 15. Fixing column; 16. Bearing; 17. Pressure sensor; 18. Display screen; 19. Input button; 20. Limit ring; 21. Slot; 22. Sealing ring; 23. Vent. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example 1

[0034] like Figure 1-4 As shown, a multifunctional high-pressure mini air pump includes a pump housing 1, a battery 2, a motor 3, a crankshaft 4, a piston rod 5, and a cylinder 6. The pump housing 1 is provided with an air intake port 7 and an air outlet port 8. The motor 3 is housed inside the pump housing 1 at the air intake port 7. The battery 2, which is a rechargeable lithium battery, is located on one side of the motor 3 and is electrically connected to it. The crankshaft 4 is located at the output end of the motor 3, and the other end of the motor 3 is also provided with an air intake vane 9 that rotates synchronously with the output end (the air intake vane 9 generates negative pressure during rotation, thereby achieving air intake). One end of the piston rod 5 is rotatably connected to the crankshaft 4, and the other end extends into the cylinder 6. The piston rod 5 can perform compression motion within the cylinder 6 under the drive of the crankshaft 4. The cylinder 6 is connected to the air outlet port 8, and a one-way valve 10 (using a conventional one-way valve 10 design) is also provided at the air outlet port 8 to prevent gas backflow.

[0035] In this embodiment, the motor 3 is a high-power brushless motor 3, which directly drives the piston rod 5 through the crankshaft 4. This design is simple in structure and more reliable in transmission. The combination of the high-power brushless motor 3 and the cylinder 6 (of a certain size) enables high-pressure (approximately 150 psi) inflation output. Simultaneously, it simplifies the structure of the air pump, reduces its size, and makes it more convenient to use and carry. Furthermore, an air extraction port 7 is provided on the air pump, and blades that rotate with the output end of the motor 3 are provided on the motor 3, giving the air pump an additional air extraction function. Compared to a conventional inflation air pump, this embodiment only adds blades to the tail end of the motor 3 and an air extraction port 7 at the corresponding position on the pump housing 1, having a negligible impact on the air pump's size. This allows the air pump in this embodiment to be more powerful while maintaining a small and compact size.

[0036] When using the air pump of this embodiment, the suction port 7 and the discharge port 8 can be selected for use according to the inflation / deflation requirements, or both can be used simultaneously. It should be noted that when using the air pump of this embodiment for suction, its suction port 7 is connected to the item to be deflated, and then the air pump is started. Under the action of the rotating suction blades 9, the gas enters the air pump through the suction port 7. Since the air pump structure is non-sealed, the gas is discharged through the gaps between the air pump housing 1. When using the air pump of this embodiment for inflation, its discharge port 8 is connected to the item to be inflated, and then the air pump is started. The motor 3 drives the piston rod 5 to perform compression motion within the cylinder 6, and the gas is injected into the item to be inflated through the discharge port 8.

[0037] It needs to be further explained that, such as Figure 6 As shown, the piston rod 5 located inside the cylinder 6 has two limiting rings 20 at one end, forming a groove 21 between them. A sealing ring 22 is provided in the groove 21. The inner diameter of the sealing ring 22 is larger than the outer diameter of the piston rod 5 at the groove 21, but smaller than the outer diameter of the limiting ring 20. The thickness of the sealing ring 22 is smaller than the thickness of the groove 21. A vent hole 23 is provided on the limiting ring 20 near the outlet port 8. The vent hole 23 passes through the limiting ring 20 and communicates with the groove 21. The reciprocating motion of the piston rod 5 is as follows: When the piston rod 5 compresses the gas, the sealing ring 22 abuts against the limiting ring 20 away from the outlet port 8 to form a seal. After the piston rod 5 completes compression and is pulled out of the cylinder 6, the sealing ring 22 abuts against the limiting ring 20 near the outlet port 8. At this time, the gas enters the cylinder 6 at the front end of the piston rod 5 through the gap between the sealing ring 22 and the groove 21 and through the vent hole 23.

[0038] Example 2

[0039] This embodiment is a further optimization and refinement of the setting of the extraction blade 9 based on embodiment 1, specifically as follows:

[0040] In this embodiment, a rotor 11 is provided at one end of the motor 3 near the air extraction port 7, such as... Figure 5 As shown, the rotor 11 is provided with the suction blades 9, and multiple suction blades 9 are arranged in a circumferential array on the rotor 11. The rotor 11 rotates synchronously with the output shaft of the motor 3, thereby driving the suction blades 9 to rotate and extract air. The suction blades 9 can be arranged vertically or inclined to the end surface of the motor 3.

[0041] More specifically, in this embodiment, a boss 12 is provided on the pump housing 1 at the air extraction port 7, and the rotor 11 abuts against the boss 12 to provide support for the rotor 11 or the motor 3. A plurality of air extraction holes 13 are provided around the boss 12, and the air extraction holes 13 are connected to the air extraction port 7 to prevent the rotor 11 from obstructing and affecting the air extraction.

[0042] Example 3

[0043] This embodiment is a further optimization and refinement of crankshaft 4 and its connecting structure based on embodiment 2, specifically as follows:

[0044] The crankshaft 4 includes a wheel 14 and a fixed column 15 disposed on the wheel 14. The piston rod 5 is provided with a rotary hole at one end connected to the crankshaft 4. The rotary hole is rotatably connected to the fixed column 15. The crankshaft 4 rotates under the action of the motor 3, and the fixed column 15 on it drives the piston rod 5 to reciprocate. During the process, the end of the piston rod 5 and the fixed column 15 can rotate relative to each other to avoid jamming.

[0045] In this embodiment, a bearing 16 is also provided between the rotary hole and the fixed column 15 to reduce rotational resistance.

[0046] Example 4

[0047] This embodiment is a further optimization and refinement of the air pump structure based on Embodiment 3, specifically as follows:

[0048] The multifunctional high-pressure mini air pump described in this embodiment also includes a control system, which includes a pressure sensor 17, a control unit, a display unit, and an inflation mode setting unit.

[0049] The pressure sensor 17 is used to detect the air pressure inside the pump housing 1 and feed it back to the control unit, so as to provide a basis for the control unit to control the inflation.

[0050] The inflation mode setting unit is used to set the inflation mode of the air pump, including car tire inflation mode, bicycle tire inflation mode, air mattress inflation mode, paddleboard inflation mode, and inflatable boat inflation mode. Of course, inflation modes for other items to be inflated can also be added or replaced. Existing air pumps require manual setting of the inflation pressure value for the item to be inflated. However, this embodiment has preset standard air pressures for various objects in the program. Simply select the type of object to be inflated and connect the air pump to automatically complete the inflation without manual pressure adjustment, reducing operational complexity.

[0051] The display unit is used to display the real-time inflation mode and inflation pressure. In this embodiment, corresponding icons are set for each applicable usage scenario. Each icon represents a usage scenario. After selecting the icon, it will automatically jump to the pressure value that matches the icon, which is simple to use.

[0052] The control unit is used to control the air pump to automatically inflate the item to be inflated in the inflation mode set by the inflation mode setting unit.

[0053] The above control system can be implemented using existing technologies, so it will not be elaborated further.

[0054] More specifically, in this embodiment, the display unit includes a display screen 18 disposed on the pump housing 1, and the inflation mode setting unit includes an input button 19 disposed on the pump housing 1, which facilitates human-computer interaction.

[0055] When using the air pump provided by this utility model, select either the suction port 7 or the discharge port 8 according to the inflation / deflation requirements. For suction, connect the suction port 7 to the item to be deflated, then start the air pump. Under the action of the rotating suction blades 9, the gas enters the air pump through the suction port 7. Since the air pump has a non-sealed structure, the gas is discharged through the gaps between the air pump housing 1. For inflation, connect the discharge port 8 to the item to be inflated, then select the inflation mode according to the type of item (such as bicycle tires, air cushions, etc.), start the air pump, and the motor 3 drives the piston rod 5 to perform compression motion within the cylinder 6. Gas is injected into the item through the discharge port 8. After inflation is complete, remove the air pump.

[0056] Most air pumps under existing technology do not have the function of suction. Even if some air pumps can achieve the function of suction, they are no longer small and portable due to their large size. This utility model uses the negative pressure generated by the rotation of the fan blades at the tail end of the high-power brushless motor 3 to achieve the function of suction, which can achieve the function of suction while ensuring a small size (48*86*85mm).

[0057] Most existing wireless electric air pumps cannot achieve high air pressure, but this structure uses a high-power brushless motor 3 and a cylinder 6 of a certain size to enable the air pump to achieve high air pressure.

[0058] Furthermore, in the description of this utility model, unless otherwise stated, the terms "multiple," "multiple roots," and "multiple groups" mean two or more, and "several," "several roots," and "several groups" mean one or more. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes and should not be construed as indicating or implying relative importance.

[0059] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multifunctional high-pressure mini air pump, characterized in that: The device includes a pump housing, a battery, a motor, a crankshaft, a piston rod, and a cylinder. The pump housing has an air intake port and an air outlet port. The motor is located at the air intake port, and the battery is located on one side of the motor and electrically connected to it. The crankshaft is located at the output end of the motor, and the other end of the motor has an air intake blade that rotates synchronously with the output end. One end of the piston rod is rotatably connected to the crankshaft, and the other end extends into the cylinder. The piston rod can perform compression motion within the cylinder under the drive of the crankshaft. The cylinder is connected to the air outlet port, and a one-way valve to prevent gas backflow is also provided at the air outlet port.

2. The multifunctional high-pressure mini air pump according to claim 1, characterized in that: The motor has a rotor at one end near the air extraction port, and the air extraction blades are arranged on the rotor. Multiple air extraction blades are arranged in a circumferential array on the rotor.

3. The multifunctional high-pressure mini air pump according to claim 2, characterized in that: A boss is provided on the pump casing at the air extraction port, the rotor abuts against the boss, and multiple air extraction holes are provided around the boss, which are connected to the air extraction port.

4. The multifunctional high-pressure mini air pump according to claim 3, characterized in that: The crankshaft includes a wheel and a fixed column disposed on the wheel. The piston rod is provided with a rotary hole at one end connected to the crankshaft, and the rotary hole is rotatably connected to the fixed column.

5. The multifunctional high-pressure mini air pump according to claim 4, characterized in that: A bearing is also provided between the rotary hole and the fixed column.

6. The multifunctional high-pressure mini air pump according to claim 5, characterized in that: The air extraction blades are arranged vertically or inclined to the end surface of the motor.

7. The multifunctional high-pressure mini air pump according to claim 6, characterized in that: It also includes a control system, which includes a pressure sensor, a control unit, a display unit, and an inflation mode setting unit; The pressure sensor is used to detect the air pressure inside the pump casing and feed it back to the control unit; The inflation mode setting unit is used to set the inflation mode of the air pump, including car tire inflation mode, bicycle tire inflation mode, air mattress inflation mode, paddleboard inflation mode and inflatable boat inflation mode. The display unit is used to display the real-time inflation mode and inflation pressure; The control unit is used to control the air pump to automatically inflate the item to be inflated in the inflation mode set by the inflation mode setting unit.

8. The multifunctional high-pressure mini air pump according to claim 7, characterized in that: The display unit includes a display screen mounted on the pump housing, and the inflation mode setting unit includes input buttons mounted on the pump housing.

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