air pump

Abstract

This invention discloses an air pump, comprising: a housing with an air intake port and an air inflation port; and a cylinder disposed within the housing, having an air intake port and an air exhaust port, wherein the air intake port is connected to the air intake port, and the air exhaust port is connected to the air inflation port. The air pump provided by this invention effectively solves the problem of existing air pumps lacking an air intake function.

Description

Technical Field

[0001] This invention relates to the field of inflation equipment technology, and more specifically, to an inflation pump. Background Technology

[0002] An air pump includes a motor, a transmission assembly, a piston rod, a one-way valve, and a cylinder. Its principle is that the motor drives the transmission assembly to make the piston rod reciprocate in the cylinder, thereby realizing the air inflation function. The piston rod has a spring plate on one side inside the cylinder. When evacuating air, the outside air is pushed open by the spring plate on the other side of the piston rod and enters the cylinder. When inflating air, the piston rod spring plate closes, and the air in the cylinder is squeezed and opens the one-way valve at the end of the cylinder to enter the object being inflated.

[0003] Most air pumps on the market currently only inflate objects using their inflation function, neglecting the negative pressure created by the suction at the other end during the inflation process. Furthermore, many young people enjoy outdoor camping and inevitably use numerous inflatable items such as swim rings, inflatable boats, inflatable tents, and air mattresses. After use, these items require manual deflation and folding for storage. However, without pressure, the air cannot be completely released, making storage difficult. Existing technology limits the functionality of air pumps, offering only inflation and lacking deflating capabilities, thus failing to meet user needs.

[0004] In summary, existing air pumps do not have an air extraction function. Summary of the Invention

[0005] This invention provides an air pump to solve the problem that air pumps in the prior art do not have a pumping function.

[0006] To achieve the above objectives, the present invention provides an air pump, comprising: a housing having an air intake port and an air inflation port; and a cylinder disposed within the housing having an air intake port and an air exhaust port, wherein the air intake port is connected to the air intake port and the air exhaust port is connected to the air inflation port.

[0007] Furthermore, the air extraction port is provided with threads or snaps, and the air extraction port can be connected to an air nozzle.

[0008] Furthermore, the air pump includes an air nozzle that is detachably connected to the air inlet and can also be detachably connected to the air outlet.

[0009] Furthermore, an air inlet is provided on the outer casing, which is connected to the intake port of the cylinder.

[0010] Furthermore, the air intake is equipped with an opening and closing mechanism, which is used to open or close the air intake.

[0011] Furthermore, the opening and closing mechanism includes: a fixed door, which is installed inside the air inlet and has a first vent hole spaced apart; a movable door, which is rotatably connected to the fixed door via a pivot and has a second vent hole; the movable door has a first position in which the second vent hole is offset from the first vent hole and the first vent hole is closed, and a second position in which the second vent hole communicates with the first vent hole; the movable door switches between the first position and the second position by rotation.

[0012] Furthermore, the opening and closing mechanism also includes: a knob, which is connected to the movable door and drives the movable door to rotate by rotating the knob; the knob is provided with a third vent hole, which is connected to the second vent hole.

[0013] Furthermore, both fixed doors and movable doors are fan-shaped door structures with multiple fan blades.

[0014] Furthermore, a negative pressure zone is formed inside the outer casing, which is connected to the air intake of the cylinder, and both the air inlet and the air outlet are connected to the negative pressure zone.

[0015] Furthermore, the cylinder includes a cylinder base, and a negative pressure zone is formed between the cylinder base and the outer shell. An air intake port is provided on the cylinder base.

[0016] Furthermore, the cylinder base is provided with a limiting rib and a limiting groove, and the outer shell is provided with a limiting boss; the limiting boss is engaged in the limiting groove; the cylinder base, limiting rib, limiting groove, limiting boss and outer shell cooperate to form a negative pressure zone.

[0017] Furthermore, a limiting groove is provided on the cylinder base, and a limiting boss is provided on the outer shell; the limiting boss is engaged in the limiting groove.

[0018] Furthermore, the cylinder includes a transmission assembly connected to the motor and a piston rod for performing work. The transmission assembly is driven to the piston rod, and both the transmission assembly and the piston rod are located in the negative pressure zone.

[0019] Furthermore, the air inlet and the air outlet are arranged adjacent to each other, and the diameter of the air inlet is larger than the diameter of the air outlet.

[0020] The air pump's inflation port connects to the cylinder's exhaust port, enabling basic inflation. The air pump's suction port connects to the cylinder's intake port; under the cylinder's power, the suction port draws in air. By aiming the suction port at the item to be deflated, it effectively removes air. The air pump can perform both inflation and deflation functions. It can inflate common items like car tires, bicycle tires, and basketballs, and can also be used to deflate storage bags, inflatable tents, swimming rings, and other items, effectively reducing their volume for easier storage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the open portion of the air inlet of the air pump according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the closed air inlet of the air pump according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the air pump with its air inlet open, according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the air pump with its air intake port open, according to an embodiment of the present invention.

[0025] Figure 5 This is an exploded view of a portion of the structure of the air pump according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of a portion of the air pump according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the cylinder base of the air pump according to an embodiment of the present invention;

[0028] Figure 8 This is an exploded view of the air pump according to an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the air pump with the air nozzle connected to the air inlet according to an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the matching structure of the air nozzle and air intake port of the air pump according to an embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the structure of the air pump with the air nozzle connected to the air inlet according to an embodiment of the present invention. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0033] See Figures 1 to 11 As shown in the embodiment of the present invention, an air pump is provided, including a housing 10 and a cylinder 20. The housing 10 is provided with an air extraction port 11 and an air inflation port 12. The air extraction port 11 can be used to extract air from an item. The cylinder 20 is disposed inside the housing 10 and has an air intake port 21 and an air exhaust port 22. The air extraction port 11 is connected to the air intake port 21, and the air exhaust port 22 is connected to the air inflation port 12.

[0034] The air pump's inflation port connects to the cylinder's exhaust port, enabling basic inflation. The air pump's suction port connects to the cylinder's intake port; under the cylinder's power, the suction port draws in air. By aiming the suction port at the item to be deflated, it effectively removes air. The air pump can perform both inflation and deflation functions. It can inflate common items like car tires, bicycle tires, and basketballs, and can also be used to deflate storage bags, inflatable tents, swimming rings, and other items, effectively reducing their volume for easier storage.

[0035] It should be noted that the air intake port can supply gas to the cylinder when it is not used for air extraction. The gas can enter the cylinder through the air intake port. In other words, the air intake port can serve as both an air extraction port and a gas intake port for the cylinder, making it a multi-purpose device.

[0036] Preferably, the air intake port 11 is provided with threads or a snap-fit, and the air intake port 11 can be connected to the air nozzle 30. The structure provided at the air intake port facilitates the connection of the air nozzle, so that the air intake function can be achieved by directly connecting the air nozzle to the air intake port, which is simple and practical. In this embodiment, the air intake port is provided with internal threads, the specific shape of which can be found in [reference needed]. Figure 1 and Figure 3 .

[0037] Combination Figure 9 and Figure 10 As shown, the air pump includes an air nozzle 30, which is detachably connected to the inflation port 12 and also detachably connected to the suction port 11. In this embodiment, both the inflation port 12 and the suction port 11 are provided with internal threads, and the connector of the air nozzle 30 is provided with matching external threads. The air nozzle can be installed on the inflation port 12 and the suction port 11 by screwing, and can be disassembled as needed. The connection method of the air nozzle can also be a snap-fit ​​or a magnetic method; no specific limitation is made here, as long as the installation and disassembly can be achieved.

[0038] When inflation is required, screw the air nozzle onto the inflation port 12. At this time, the suction port 11 will open. (See below) Figure 9 When the suction function is needed, screw the air nozzle onto the suction port 11. At this time, the inflation port 12 will open. (See below) Figure 10 .

[0039] Preferably, the outer casing 10 is provided with an air inlet 13, which is connected to the air intake 21 of the cylinder 20. In addition to the air extraction port 11, an air inlet 13 is provided. This arrangement has the advantage of meeting the larger air intake required for inflation, as the air inlet 13 can expand the amount of gas that the cylinder's air intake port can draw in.

[0040] Preferably, the air inlet 13 is provided with an opening and closing mechanism for opening or closing the air inlet 13. This opening and closing mechanism is designed to coordinate with the inflation and deflation functions. When inflation is required, the opening and closing mechanism opens the air inlet 13 to ensure the air intake meets the needs of the inflation pump. When deflation is required, the opening and closing mechanism closes the air inlet 13, ensuring that the cylinder's intake port can only draw gas from the deflation port, thus achieving the deflation function.

[0041] Combination Figure 8 As shown, the opening and closing mechanism includes a fixed door 41 and a movable door 42. The fixed door 41 is installed inside the air inlet 13 and has at least two first vent holes 41a spaced apart. The movable door 42 is rotatably connected to the fixed door 41 via a pivot. The movable door 42 has second vent holes 42a that match the shape, size, and number of the first vent holes 41a. The movable door 42 has a first position in which the second vent hole 42a is offset from the first vent hole 41a and the first vent hole 41a is closed. The movable door 42 also has a second position in which the second vent hole 42a communicates with the first vent hole 41a. The movable door 42 switches between the first and second positions by rotation.

[0042] The movable door changes the opening and closing of the air inlet 13 by rotation. The movable door and the fixed door work together to realize the corresponding functions of the opening and closing mechanism. In this embodiment, both the fixed door 41 and the movable door 42 are fan-shaped door structures with multiple fan blades. The fan blades of the fan-shaped door overlap or stagger each other to achieve the effect of interconnected and staggered ventilation holes. Of course, in other embodiments not shown in the figure, the fixed plate and the movable door can also be selected with other shapes and through hole shapes. The second ventilation hole 42a has the same shape as the first ventilation hole 41a, which can be fan-shaped, round hole, or oblong hole, and is evenly arranged around the circumference of the fan-shaped door.

[0043] Preferably, the opening and closing mechanism further includes a knob 43, which is driven and connected to the movable door 42. Rotating the knob 43 causes the movable door 42 to rotate. The knob 43 is provided with a third vent 43a, which communicates with the second vent 42a. See details below. Figure 8 and Figure 9 The shape of the third vent can also be selected and changed, and they can be arranged in an array. There is also an air gap between the knob and the movable door. Users can operate the knob to turn the movable door, which is simple and quick.

[0044] When inflation is required, the knob is in the default position, the third vent 43a is connected to the second vent 42a, the second vent 42a is connected to the first vent 41a, and the air inlet is in the open connected state. (See below) Figure 9 When the suction function is needed, rotating the knob at a certain angle will move the movable door, causing it to switch to the first position and close the air inlet. See [link / reference]. Figure 10In this embodiment, the knob 43 rotates 90°. Of course, the rotation angle of the knob can also be 15°, 30°, or 60°. There is no specific limitation here. The rotation angle is set according to the number and arrangement of the first vent 41a and the second vent 42a.

[0045] Combination Figures 3 to 6 As shown, a negative pressure zone 50 is formed inside the outer casing 10. The negative pressure zone 50 is connected to the air intake 21 of the cylinder 20, and both the air inlet 13 and the air outlet 11 are connected to the negative pressure zone 50. The negative pressure zone 50 refers to a portion of the internal space that is under negative pressure when the cylinder 20 is working. The negative pressure zone can be a regular space or the space adjacent to other components. Its specific shape depends entirely on the internal structure of the air pump. Any space that is connected to the air intake 21 and simultaneously connected to the air inlet and air outlet can be called a negative pressure zone. Gas entering from either the air inlet or the air outlet will first enter the negative pressure zone and then enter the cylinder. The function of the negative pressure zone is to form a semi-enclosed soundproof chamber, effectively reducing the noise generated when the cylinder is working.

[0046] In this embodiment, the cylinder 20 includes a cylinder base 23, which forms a negative pressure zone 50 with the outer casing 10. An air intake port 21 is provided on the cylinder base 23. Figures 5 to 7 The structure shown has a cylinder base 23 with a piston, connecting rod, gear and other structures, which are basic components of a cylinder. Since there are many shapes of cylinder bases, as long as the cylinder base and the outer shell form a negative pressure zone that communicates with the intake port, it is an implementation method that can be achieved by the present invention.

[0047] Preferably, the cylinder base 23 is provided with a limiting rib 231 and a limiting groove 232, and the outer shell 10 is provided with a limiting boss 14; the limiting boss 14 is engaged in the limiting groove 232; the cylinder base 23, the limiting rib 231, the limiting groove 232, the limiting boss 14 and the outer shell cooperate to form a negative pressure zone 50. The engaging fit between the limiting boss 14 and the limiting groove 232 can not only form a seal in the negative pressure zone, but also provide guidance and fixation.

[0048] A limiting groove 232 is provided on the cylinder base 23, and a limiting boss 14 is provided on the outer shell; the limiting boss 14 is engaged in the limiting groove 232. The engaging fit between the limiting boss 14 and the limiting groove 232 enables the outer shell to be guided and fixed during installation.

[0049] In alternative embodiments other than this one, either the cylinder base 23 or the outer shell 10 is provided with a groove. For example, the cylinder base 23 is provided with a groove, and the outer shell 10 has an assembly structure that mates with the groove; or the outer shell 10 is provided with a groove, and the cylinder base 23 has an assembly structure that mates with the groove. Thus, the cylinder base 23, the groove, the limiting groove 232, the limiting boss 14, and the outer shell 10 cooperate to form a negative pressure zone 50. More preferably, the air pump also includes a seal (not shown in the figure), which is installed in the groove. The cylinder base 23, the groove, the seal, the limiting groove 232, the limiting boss 14, and the outer shell 10 cooperate to form the negative pressure zone 50. The cylinder 20 includes a transmission assembly 24 connected to a motor and a piston rod 25 that performs work. The transmission assembly 24 and the piston rod 25 are drivenly connected, and both the transmission assembly 24 and the piston rod 25 are located within the negative pressure zone. This prevents air leakage from the transmission assembly and the piston rod, resulting in better airtightness.

[0050] To further simplify operation, the air inlet 13 and the air outlet 11 are arranged adjacent to each other, with the diameter of the air inlet 13 being larger than that of the air outlet 11. This adjacent arrangement allows users to easily locate the air outlet, and they can simply rotate the air inlet on one side, making it convenient and quick; it also improves the overall appearance. Furthermore, the larger diameter of the air inlet 13 ensures sufficient air intake for inflation, while the relatively smaller diameter of the air outlet increases the negative pressure at the air outlet while maintaining a constant cylinder output, resulting in faster air extraction.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0053] Of course, the above are preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the basic principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An air pump, characterized in that, include: The outer casing (10) is provided with an air extraction port (11) and an air inflation port (12). A cylinder (20) is disposed inside the housing (10). The cylinder (20) has an air intake port (21) and an air exhaust port (22). The air intake port (11) is connected to the air intake port (21), and the air exhaust port (22) is connected to the air filling port (12). An air inlet (13) is provided on the outer shell (10), the air inlet (13) is connected to the air intake (21) of the cylinder (20), the air inlet (13) is provided with an opening and closing mechanism, the opening and closing mechanism is used to open or close the air inlet (13), a negative pressure zone (50) is formed inside the outer shell (10), the negative pressure zone (50) is connected to the air intake (21) of the cylinder (20), the air inlet (13) and the air extraction port (11) are both connected to the negative pressure zone (50); The cylinder (20) includes a cylinder base (23), which forms a negative pressure zone (50) with the outer shell (10). The cylinder base (23) is provided with an air intake (21), a limiting rib (231) and a limiting groove (232) are provided on the cylinder base (23), and a limiting boss (14) is provided on the outer shell. The limiting boss (14) is engaged in the limiting groove (232). The cylinder base (23), the limiting rib (231), the limiting groove (232), the limiting boss (14) and the outer shell cooperate to form the negative pressure zone (50).

2. The air pump according to claim 1, characterized in that, The air extraction port (11) is provided with threads or snaps, and the air extraction port (11) can be connected to the air nozzle (30).

3. The air pump according to claim 1, characterized in that, The air pump includes an air nozzle (30) which is detachably connected to the air inlet (12) and can also be detachably connected to the air outlet (11).

4. The air pump according to claim 1, characterized in that, The opening and closing mechanism includes: A fixed door (41) is installed inside the air inlet (13), and the fixed door (41) has a first vent hole (41a) spaced apart. A movable door (42) is rotatably connected to the fixed door (41) via a pivot, and the movable door (42) has a second vent (42a). The movable door (42) has a first position in which the second vent (42a) is offset from the first vent (41a) and the first vent (41a) is closed. The movable door (42) has a second position in which the second vent (42a) is connected to the first vent (41a). The movable door (42) switches between the first position and the second position by rotation.

5. The air pump according to claim 4, characterized in that, The opening and closing mechanism also includes: A knob (43) is driven and connected to the movable door (42). The knob (43) rotates to drive the movable door (42) to rotate. A third vent (43a) is provided on the knob (43), and the third vent (43a) is connected to the second vent (42a).

6. The air pump according to claim 4, characterized in that, Both the fixed door (41) and the movable door (42) are fan-shaped door structures with multiple fan blades.

7. The air pump according to claim 1, characterized in that, The cylinder (20) includes a transmission assembly (24) connected to a motor and a piston rod (25) for performing work. The transmission assembly (24) is driven to connect with the piston rod (25). Both the transmission assembly (24) and the piston rod (25) are located within the negative pressure zone (50).

8. The air pump according to claim 1, characterized in that, The air inlet (13) is arranged adjacent to the air outlet (11), and the diameter of the air inlet (13) is larger than the diameter of the air outlet (11).

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