An air pump

Abstract

The application relates to the technical field of gas conveying pump structures, in particular to a gas pump which comprises a low-pressure pump assembly and a control valve assembly; wherein the low-pressure pump assembly comprises a low-pressure pump body, a first cavity and a gas nozzle used for being connected with an inflated product; the low-pressure pump body is arranged in the first cavity, the first cavity is communicated with the gas nozzle; the first cavity is connected with the control valve assembly used for controlling the first cavity to be communicated with or not communicated with the outside world. The inflation and air extraction are realized by the forward and reverse rotation of the low-pressure pump assembly; the valve body member is driven by the driving mechanism of the control valve assembly to be switched between the open and closed states, the air extraction port and the inflation port are integrated to realize the inflation and air extraction functions of the gas pump, so that the problems that the air outlet and the air inlet of the gas pump in the prior art are two independent interfaces, the gas pipe needs to be manually switched to be connected to the corresponding interface during the inflation and air extraction work, the user experience is poor, and the whole product is large in size are overcome.

Description

Technical Field

[0001] This application relates to the technical field of gas delivery pump structures, and more particularly to a gas pump. Background Technology

[0002] Air pumps are fluid transport devices widely used in industry, agriculture, medical care, and daily life. Their main function is to provide compressed air or gas. With the rapid development of my country's economy, air pumps are being used more and more widely in various industries, and the performance requirements for air pumps are also getting higher and higher.

[0003] Based on the above, many air pumps on the market have inflation and de-inflation functions, but the air outlet and air inlet are two separate interfaces. When inflation and de-inflation are working, the air hose needs to be manually switched to connect to the corresponding interface, resulting in a poor user experience. In addition, the air outlet and air inlet are two separate channels, which makes the product bulky.

[0004] The above issues need to be addressed. Utility Model Content

[0005] This application provides an air pump to solve the problems of existing air pumps where the air outlet and air inlet are two separate interfaces, requiring manual switching of the air pipe to the corresponding interface during inflation and deflation, resulting in poor user experience and large overall product size.

[0006] Firstly, an air pump includes:

[0007] Low-pressure pump assembly and control valve assembly;

[0008] The low-pressure pump assembly includes a low-pressure pump body, a first cavity surrounding the low-pressure pump body, and an air nozzle for connecting to the product being inflated; wherein the low-pressure pump body is disposed in the first cavity, and the first cavity is in communication with the air nozzle;

[0009] The first cavity is connected to a control valve assembly for controlling whether the first cavity is connected to or disconnected from the outside.

[0010] Furthermore, the control valve assembly includes a hollow valve housing with a first vent hole, a valve body component rotatably disposed within the valve housing, and a drive mechanism.

[0011] The first cavity is in communication with the valve housing;

[0012] The valve body component includes a valve core, the valve core having a first sealing block and a first opening;

[0013] The drive mechanism is connected to the valve core and rotates to make the first sealing block or the first opening of the valve core align with the first vent hole to switch the air passage on and off.

[0014] Furthermore, the valve core also has a second sealing block and a second opening;

[0015] The first opening and the second opening are respectively provided on both sides of the connection between the first sealing block and the second sealing block.

[0016] Furthermore, the valve housing is provided with a second vent hole;

[0017] The first vent and the second vent are arranged symmetrically with respect to the central axis.

[0018] Furthermore, the valve body component includes a positioning component, which includes a retaining ring and a first groove disposed on the outer periphery of the valve core, the retaining ring being assembled in the first groove.

[0019] Furthermore, there are two positioning components, which are respectively located on both sides of the valve core in the axial direction.

[0020] Furthermore, the valve body component includes a sealing ring, and the valve core has a second groove on its outer periphery, with the sealing ring fitted into the second groove.

[0021] Furthermore, the control valve assembly also includes a valve end cap;

[0022] The valve end cap is bolted to the valve body.

[0023] Furthermore, it also includes a high-pressure pump assembly, which includes a second chamber and a one-way valve in the second chamber. The second chamber is connected to the first chamber through the one-way valve, and the opening direction of the one-way valve is from the second chamber to the first chamber.

[0024] Furthermore, the high-pressure pump assembly also includes a connecting rod piston assembly and a motor. The connecting rod piston assembly includes a connecting rod assembly and a piston intake valve, which is movably connected to the connecting rod assembly.

[0025] The motor drives the connecting rod component to move the piston intake valve axially back and forth in the second cavity to control the on / off state between the second cavity and the first cavity.

[0026] The technical solutions provided in this application have the following advantages compared with the prior art:

[0027] This technical solution provides an air pump, including a low-pressure pump assembly and a control valve assembly. The low-pressure pump assembly includes a low-pressure pump body, a first chamber, and an air nozzle for connecting to the product being inflated. The low-pressure pump body is located within the first chamber, which is connected to the air nozzle. The first chamber is connected to a control valve assembly for controlling whether the first chamber is connected to or disconnected from the outside environment. Inflation and deflating are achieved by the forward and reverse rotation of the low-pressure pump assembly. The drive mechanism of the control valve assembly switches the valve body component between open and closed states, integrating the air intake and inflation ports into one unit to realize the air pump's inflation and deflating functions. This design overcomes the problems of existing air pumps where the air outlet and air inlet are two separate interfaces, requiring manual switching of the air hose to the corresponding interface during inflation and deflating operations, resulting in a poor user experience and a large overall product size. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0031] Figure 1 This is a schematic diagram of the overall structure of the air pump in this application;

[0032] Figure 2 This is a cross-sectional structural diagram of the air pump of this application;

[0033] Figure 3 This is a schematic diagram of the high-pressure pump assembly of this application;

[0034] Figure 4 This is a structural schematic diagram of the high-pressure pump assembly from another angle.

[0035] Figure 5 This is an exploded view of the control valve assembly of this application;

[0036] Figure 6 This is another exploded view of the control valve assembly of this application;

[0037] Figure 7 This is a schematic diagram of the open state structure of the control valve assembly of this application;

[0038] Figure 8 This is a schematic diagram of the control valve assembly in the closed state of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Low-pressure pump assembly; 11. Low-pressure pump body; 12. First chamber; 13. Air nozzle;

[0041] 2. High-pressure pump assembly; 20. Second chamber; 21. High-pressure pump motor; 211. Output shaft; 22. Connecting rod piston assembly; 221. Second air port; 222. Piston inlet valve; 223. Connecting rod assembly; 24. First air port; 25. Check valve;

[0042] 3. Control valve assembly; 31. Valve housing; 311. First vent; 312. Second vent; 32. Valve body component; 321. Valve core; 3211. Second groove; 322. First opening; 323. Second opening; 324. First sealing block; 325. Second sealing block; 326. Positioning component; 3261. Snap ring; 3262. First groove; 327. Sealing ring; 33. Drive mechanism; 34. Valve end cover. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0045] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0046] To address the issues in existing technologies where the air pump's outlet and inlet are two separate interfaces, requiring manual switching of the air hose to the corresponding interface during inflation and deflation, resulting in a poor user experience and a large overall product size.

[0047] The air pump in this technical solution is suitable for operations that require inflation or de-inflation, such as inflating paddleboards (SUP), inflatable tents, and inflatable mattresses.

[0048] like Figure 1 In the embodiment shown, the air pump is provided with a low-pressure pump assembly 1 and a control valve assembly 3; wherein, the low-pressure pump assembly 1 includes a low-pressure pump body 11, a first cavity 12 surrounding the low-pressure pump body, and an air nozzle 13 for connecting to the product being inflated.

[0049] The low-pressure pump body 11 includes a motor and a fan. The motor drives the fan to rotate in either the forward or reverse direction. The fan is defined to perform an inflation function when rotating forward and an air extraction function when rotating in the reverse direction. However, this is not a limitation; the direction of the fan and the actual function can be set according to specific needs.

[0050] The low-pressure pump body 11 is disposed in the first cavity 12, and the first cavity 12 is connected to the air nozzle 13; the first cavity 12 is connected to a control valve assembly 3 for controlling whether the first cavity 12 is connected to or not connected to the outside.

[0051] In this embodiment, the control valve assembly 3 is externally controlled to enable the first cavity 12 to be connected to or disconnected from the outside world. The external control includes manual control or electric control.

[0052] In an electrically controlled embodiment, the control valve assembly 3 can be electrically driven to rotate, thereby controlling the opening and closing of the passage between the first cavity 12 and the outside world. The specific working process is as follows:

[0053] When in the inflation state, the control valve assembly 3 opens the passage connecting the first chamber 12 to the outside, and the outside gas can be drawn into the first chamber 12 by the blower. Then, under the continuous air supply of the blower, the gas enters the product being inflated through the air nozzle 13 to complete the inflation operation.

[0054] When it is necessary to maintain the current air volume of the inflated product, the electric control valve assembly 3 closes the above passage, preventing the gas in the first chamber 12 from flowing to the outside, thereby maintaining the current air pressure.

[0055] When the evacuation operation is performed, the electric control valve assembly 3 opens the passage again, and the airflow in the first chamber 12 is released instantly and flows to the outside, thus achieving evacuation.

[0056] The advantage of this embodiment is that the control valve assembly 3 is used to control the opening and closing of the first cavity 12 with the outside world, so as to realize the air extraction port and air inlet as one unit, thereby completing the inflation or air extraction function. This solves the problem that the existing air pump has separate interfaces for air extraction and inflation, which is relatively large and cumbersome to operate.

[0057] In another embodiment, the air pump includes a low-pressure pump assembly 1 and a high-pressure pump assembly 2, which are respectively disposed in different channels, but both are connected to the air nozzle 13. The air nozzle 13 can be directly connected to inflated products such as paddleboards (SUPs), and achieves the corresponding function through the gas flow in the internal channel.

[0058] Because low-pressure pump assembly 1 is characterized by high flow rate and low pressure, it can fill gas more quickly during the initial inflation phase. For example, when inflating a paddleboard SUP, the base pressure needs to be increased rapidly in the 0-2 psi stage, and the high displacement of the low-pressure pump can shorten the inflation time for the paddleboard SUP. If high-pressure pump assembly 2 is used throughout the process, its characteristics of "low flow rate and high pressure" will result in low efficiency and increased energy consumption in the low-pressure stage.

[0059] Therefore, as Figure 1 As shown, this type of air pump uses a combination of a low-pressure pump assembly 1 and a high-pressure pump assembly 2, employing a two-stage operating control logic. The detailed operating process is as follows: for example, the low-pressure pump operates from 0-2 psi, and the high-pressure pump from 2-20 psi (2 psi is the switching pressure value for the high-pressure pump). When this preset value is reached, the high-pressure pump assembly 2 switches to operation. This design enables efficient inflation of inflatable products, thereby shortening the overall inflation time.

[0060] like Figure 1As shown, in this embodiment, the air nozzle 13 is connected to the product being inflated (e.g., a paddleboard SUP). During use, depending on the different usage scenarios, it can introduce external gas into the product being inflated to achieve inflation, or it can export gas from the product being inflated to the outside to achieve deflating.

[0061] like Figure 2 As shown, the low-pressure pump assembly 1 inflates when rotating forward and deflates when rotating backward. Specifically, the low-pressure pump assembly includes a first cavity 12, which is hollow and houses a low-pressure pump body 11. The low-pressure pump body 11 includes a brushless motor and a fan. The fan is located below the brushless motor and is driven to rotate by the brushless motor. By definition, the side where the fan is connected to the brushless motor is the inner side, and the side not connected to the brushless motor is the outer side.

[0062] Specifically, when the brushless motor rotates forward, it drives the fan to rotate clockwise, creating a low-pressure area from the inside of the fan to the air nozzle 13, while the outside of the fan experiences high pressure, prompting external air to rush in for inflation. When the brushless motor rotates in reverse, it drives the fan to rotate counterclockwise, forcing the air inside the inflated product outward for suction. It should be noted that in actual use, the rotation direction of the brushless motor and the fan can be flexibly adjusted according to requirements. It is not mandatory for the brushless motor to rotate forward and the fan to rotate clockwise. It can also be set to drive the fan counterclockwise based on actual working conditions. This adjustable transmission logic ensures that the inflation and suction functions of the low-pressure pump assembly 1 are adaptable to different application scenarios.

[0063] by Figure 2 Using the air pump as the reference center, the left side of the paper is the 'left direction' and the right side is the 'right direction' (direction reference and...). Figure 2 (The paper orientation shown is consistent).

[0064] The upper part of the first chamber 12 is connected to the air nozzle 13. In actual use, external gas flows into the first chamber 12 through the action of the brushless motor and the fan, and exchanges gas with the product being inflated through the air nozzle 13.

[0065] On the left side of the first cavity 12, a high-pressure pump assembly 2 is connected. The high-pressure pump assembly 2 includes a high-pressure pump motor 21, a connecting rod piston assembly 22, and a second cavity 20. The output shaft 211 of the high-pressure pump motor 21 is connected to the connecting rod piston assembly 22, which is located inside the second cavity 20. The second cavity 20 is connected to the first cavity 12 through a first air hole 24. A one-way valve 25 is provided between the second cavity 20 and the first cavity 12. The one-way valve 25 covers the first air hole 24 to control the connection or disconnection between the first cavity 12 and the second cavity 20.

[0066] In one embodiment, the second cavity 20 and the first cavity 12 can be connected by a spiral connection, and then a sealing ring is fitted at the connection to increase the sealing performance of the connection; or, the second cavity 20 and the first cavity 12 can be connected by an integral molding connection to enhance the strength of the connection and prevent the connection from breaking under high pressure and causing gas leakage.

[0067] The connecting rod piston assembly 22 includes a connecting rod assembly 223 and a piston intake valve 222; the piston intake valve 222 is movably connected to the connecting rod assembly 223; the high-pressure pump motor 21 drives the connecting rod assembly 223 to drive the piston intake valve 222 to move axially back and forth in the second cavity 20 to control the on / off state between the second cavity 20 and the first cavity 12.

[0068] Specifically, in this embodiment, the output shaft of the high-pressure pump motor 21 is deflectedly connected to the connecting rod component 223, so as to drive the connecting rod piston component 22 to move axially back and forth in the second cavity 20. Figure 2 From the perspective of the paper's surface, this axial reciprocating movement is the same as the left-right reciprocating movement in the direction of the paper's surface.

[0069] It should also be noted that the second cavity 20 has an air inlet (not shown in the figure) at its air intake end, and this air inlet is located as follows: Figure 2 In the area indicated by the arrow, when the external gas reciprocates axially in the connecting rod piston component 22, the gas pressure in the second chamber 20 is lower than the external gas pressure, and the external gas is pumped into the second chamber 20 from the air inlet.

[0070] When using, such as Figure 3 As shown, a second air hole 221 is provided at the connection between the connecting rod component 223 and the piston inlet valve 222: When the connecting rod piston component 22 moves away from the first air hole 24, a negative pressure is formed in the second cavity 20. Because the external atmospheric pressure is greater than the air pressure in the second cavity 20, and the one-way valve 25 is in a closed state, the external airflow enters from the air inlet and quickly pushes open the piston inlet valve 222 covering the second air hole 221, flowing into the interior of the second cavity 20; while when the connecting rod piston component 22 moves towards the first air hole 24, the gas that previously flowed into the second cavity 20 increases in pressure under its compression, thereby pushing open the one-way valve 25, flowing through the first cavity 12 to the air nozzle 13, and finally being injected into the product to be inflated under the guidance of the air nozzle 13.

[0071] When in the suction state, the gas in the inflated product flows from the inside of the inflated product to the first cavity 12 under the guidance of the air nozzle 13. At this time, the brushless motor drives the fan to rotate in the opposite direction, so that the inside of the fan is high pressure and the outside of the fan is low pressure, so as to accelerate the flow of gas from the inflated product to the outside of the fan, and then to the outside through the opened control valve assembly 3.

[0072] It should also be noted that during air extraction, the one-way valve 25 is configured to only allow airflow from the second chamber 20 to the first chamber 12 to be opened, while the one-way valve 25 cannot be opened from the first chamber 12 to the second chamber 20.

[0073] Therefore, during the evacuation process, after the airflow exits from the nozzle 13, it compresses the one-way valve 25 located on the side of its outflow direction, causing the one-way valve 25 to tightly cover the first air hole 24, thereby blocking the airflow path to the second chamber 20. At this time, the airflow can only flow along the cavity direction of the first chamber 12, guided by the fan to the outside of the fan. Through this design, the low-pressure pump assembly 1 and the high-pressure pump assembly 2 can achieve non-interference between each other in the two different working states of inflation and evacuation.

[0074] The air pump includes a control valve assembly 3, which includes: a valve housing 31; a valve body component 32 rotatably disposed within the valve housing 31; and a drive mechanism 33, the output shaft 211 of which is connected to the valve body component 32 for driving the valve body component 32 to switch between an open state and a closed state.

[0075] The control valve assembly 3 includes a valve housing 31 with a first vent 311 and a hollow interior, a valve body component 32, and a drive mechanism 33. The valve housing 31 is connected to the third end of the first cavity 12. The valve body component 32 is rotatably disposed within the valve housing 31. The valve body component 32 includes a valve core 321, which has a first sealing block 324 and a first opening 322. The output shaft of the drive mechanism 33 is connected to the valve core 321 and drives the valve core 321 to rotate within the valve housing 31, so that the first sealing block 324 or the first opening 322 engages with the first vent 311.

[0076] It should be noted that, as Figure 8 As shown, when the valve core 321 is rotated until the first sealing block 324 aligns with the first vent 311, the first cavity 12 is not connected to the outside and is in a closed state. Figure 7 As shown, when the valve core 321 is rotated to the point where the first opening 322 aligns with the first vent 311, the first cavity 12 is connected to the outside, i.e., it is in the open state.

[0077] In detail, during inflation, the drive mechanism 33 drives the valve body component 32 to rotate to the open state. At this time, the first cavity 12 is connected to the outside. At the same time, the brushless motor in the low-pressure pump assembly 1 rotates forward so that the blower rotates clockwise to form a low air pressure in the first cavity 12. This allows the outside air to flow into the first cavity 12 sequentially from the first vent 311 and the first opening 322. Under the guidance of the first cavity 12, the air flows into the product being inflated through the air nozzle 13, thereby enabling the air pump to inflate the product.

[0078] In one specific embodiment, when the low-pressure pump assembly 1 continuously inflates until the internal pressure of the inflated product reaches 2 psi, the external control system automatically performs the following operations: controlling the drive mechanism 33 to rotate so that the control valve body component 32 switches to the closed state; simultaneously controlling the motor corresponding to the high-pressure pump assembly 2 to start working; cutting off the power supply to the motor of the low-pressure pump assembly 1; thus, the high-pressure pump assembly 2 begins high-pressure inflation, while the low-pressure pump assembly 1 stops low-pressure inflation. This is because the low-pressure pump is designed with "high flow rate and low pressure," allowing for faster gas filling during the initial inflation stage (large gas volume and low pressure). If the high-pressure pump is used for inflation throughout, the "low flow rate and high pressure" characteristics of the high-pressure pump would result in low inflation efficiency and increased energy consumption. Therefore, it should be understood that this design, utilizing a combination of low-pressure inflation followed by high-pressure inflation, effectively shortens the total inflation time for the pump to complete the inflation of the inflated product.

[0079] In another application scenario, during the evacuation process, the drive mechanism 33 rotates the valve body component 32 to the open state, connecting the first chamber 12 to the outside. Simultaneously, the external control system stops the high-pressure pump assembly 2. Since there is no airflow in the second chamber 20, the one-way valve 25 cannot be opened, so the one-way valve 25 remains closed. At this time, the fan in the low-pressure pump assembly 1 rotates in the opposite direction, creating a low-pressure environment on the outside and a high-pressure environment on the inside. This causes the gas inside the inflated product to flow through the nozzle 13 into the first chamber 12. Under the further rotation of the fan, the gas flows to the outside of the fan and then to the outside through the opened valve body component 32, thus completing the evacuation process.

[0080] In summary, the air pump in this technical solution has only one air nozzle 13. Through the coordinated operation of this air nozzle 13 with the high-pressure pump assembly 2, the low-pressure pump assembly 1, and the control valve assembly 3, the function of inflating or deflating the product is realized. This design reduces the number of interfaces while integrating the deflating and inflating functions into one unit, effectively solving the problems of existing air pumps where the air outlet and air inlet are separate dual interfaces, resulting in the need to manually switch air hoses during inflation and deflating, poor user experience, and large product size.

[0081] In one embodiment of this technical solution, such as Figure 5 and Figure 6 As shown, the valve housing 31 is provided with a first vent hole 311 and a second vent hole 312; the valve core 321 also has a second sealing block 325 and a second opening 323; a first opening 322 and a second opening 323 are respectively provided on both sides of the connection between the first sealing block 324 and the second sealing block 325.

[0082] In this embodiment, the sealing block and the opening are arranged circumferentially around the central axis of the valve core 321. It should be understood that this design allows the drive mechanism 33 to adjust the rotation of the valve core 321 with a shorter torque, enabling rapid switching between the open and closed states.

[0083] In detail, when the valve body component 32 is rotated to the open state, the first opening 322 is aligned and connected with the first vent 311, and the second opening 323 is aligned and connected with the second vent 312, forming two airflow channels leading to the first cavity 12.

[0084] It should be noted that when the two openings are aligned with their respective vents (for example, the first opening 322 is aligned and connected with the first vent 311, and the second opening 323 is aligned and connected with the second vent 312), the valve body component 32 is in the following position: Figure 7 In the open state shown, external airflow enters the first cavity 12 simultaneously through the two vents (311 and 312), and then enters the inflated product under the guidance of the air nozzle 13. Because of the additional airflow channel, a greater airflow rate enters the inflated product, achieving rapid inflation.

[0085] During the deflating process, the additional airflow channel allows the airflow in the inflated product to be quickly expelled to the outside, thus achieving rapid deflating.

[0086] This technical solution solves the problem of cumbersome opening and closing switching of traditional air pump valves by designing a rotary valve core 321. The first opening 322, the second opening 323, the first sealing block 324, and the second sealing block 325 are integrated into the same valve core 321. The dual-channel synchronous opening and closing switching can be completed by using the drive mechanism 33 to drive the valve core 321 to rotate relative to the valve shell 31.

[0087] In a specific embodiment of this technical solution, such as Figure 6 As shown, the valve body component 32 includes a positioning component 326, which includes a retaining ring 3261 and a first groove 3262 disposed on the outer periphery of the valve core 321. The retaining ring 3261 is assembled in the first groove 3262.

[0088] It should be understood that when the valve core 321 is driven to rotate by the drive mechanism 33, it will experience lateral positional movement. To ensure that the valve core 321 maintains stable coaxiality, an axial positioning structure is formed by the engagement of the retaining ring 3261 and the first groove 3262. After the retaining ring 3261 is embedded in the first groove 3262, it restricts the axial movement of the valve core 321 within the valve housing 31. At the same time, the circumferential contour of the first groove 3262 provides circumferential restraint for the retaining ring 3261, ensuring that the valve core 321 maintains stable coaxiality during rotation and preventing lateral swaying of the valve core 321. This design solves the problem that the traditional valve core 321 is prone to axial movement or circumferential displacement when rotating within the valve housing 31.

[0089] In a specific embodiment of this technical solution, such as Figure 6 As shown, there are two positioning components 326, which are located on both sides of the valve core 321 in the axial direction.

[0090] It should be understood that since the valve core 321 has a certain axial length, the positioning components 326 are arranged in the length direction of the valve core 321, which helps to maintain the axial stability of the valve core 321 when it rotates, and avoids the valve core 321 from moving up and down in the axial direction in the valve body 31.

[0091] In a specific embodiment of this technical solution, during the rotation of the valve core 321, gas is prone to overflow from the gap between the valve core 321 and the valve housing 31, affecting the air pump's charging or pumping efficiency and sealing reliability.

[0092] like Figure 6 As shown, the valve body component 32 includes a sealing ring 327, and a second groove 3211 is provided on the outer periphery of the valve core 321. The sealing ring 327 is fitted into the second groove 3211. During use, the elastic deformation of the sealing ring 327 fills the gap between the valve core 321 and the valve housing 31, forming a dynamic sealing structure. When the valve core 321 rotates within the valve housing 31, the sealing ring 327 is compressed, generating radial elastic force, and tightly adhering to the inner wall of the valve housing 31, preventing gas leakage through the fitting gap. This design solves the gas leakage problem caused by the fitting gap between the traditional valve core 321 and the valve housing 31.

[0093] In one embodiment of this technical solution, such as Figure 6 As shown, the control valve assembly 3 also includes a valve end cover 34; the valve end cover 34 is bolted to the valve body 31.

[0094] In this embodiment, the valve end cap 34 and the valve housing 31 are assembled to form an internally hollow assembly space, in which the valve core 321 is assembled. The bottom of the valve end cap 34 has a through hole, into which the output shaft 211 of the drive mechanism 33 is inserted until it connects with the valve core 321. When the drive mechanism 33 rotates, the valve core 321 is confined to rotate within this assembly space. This design further solves the problem of insufficient coaxiality between the drive mechanism 33 and the valve core 321, preventing the valve core 321 from wobbling during rotation and increasing the stability of the valve core 321 during rotation.

[0095] In one embodiment of this technical solution, the drive mechanism 33 is a stepper motor. It should be understood that by utilizing the characteristic of a stepper motor being driven by pulse signals and rotating a fixed angle with each pulse signal received, precise control of the open and closed states can be achieved.

[0096] In this embodiment, the switching of the opening and closing positions of the valve core 321 is precisely controlled by a stepper motor. For example, the stepper motor receives pulse signals to control the valve core 321 from one position to the other. Figure 8 The off state shown is switched to as follows Figure 7 The open position shown requires rotation by 90°, from Figure 7 Return to open state Figure 8 The valve core 321 rotates 90° again from the closed state; when the valve core 321 reaches the target position, the system immediately cuts off the power supply to the stepper motor and uses the static self-locking characteristic of the stepper motor to maintain the current open position. In this way, the valve core 321 is accurately switched between the open and closed positions, and the power-off retention function reduces the system power consumption. It is suitable for inflation / vacuuming scenarios that need to maintain a fixed state for a long time.

[0097] Furthermore, such as Figure 1 and Figure 2 As shown, the first chamber 12 and the second chamber 20 are perpendicular to each other. This design, where the first chamber 12 and the second chamber 20 are perpendicular to each other, creates independent gas flow paths through an orthogonal layout. This ensures that the first chamber 12, where the low-pressure pump assembly 1 is located, and the second chamber 20, where the high-pressure pump assembly 2 is located, each have their own path, avoiding turbulence or pressure loss caused by airflow convergence. Simultaneously, it utilizes spatial geometry to achieve efficient channel integration. This effectively solves the problems of gas flow interference, large space occupation, and complex component installation caused by the internal channel layout of traditional air pumps.

[0098] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0099] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0101] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0102] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0104] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0105] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air pump, characterized in that, include: Low-pressure pump assembly and control valve assembly; The low-pressure pump assembly includes a low-pressure pump body, a first cavity surrounding the low-pressure pump body, and an air nozzle for connecting to the product being inflated; wherein the low-pressure pump body is disposed in the first cavity, and the first cavity is in communication with the air nozzle; The first cavity is connected to a control valve assembly for controlling whether the first cavity is connected to or disconnected from the outside.

2. The air pump according to claim 1, characterized in that: The control valve assembly includes a hollow valve housing with a first vent hole, a valve body component rotatably disposed within the valve housing, and a drive mechanism. The first cavity is in communication with the valve housing; The valve body component includes a valve core, the valve core having a first sealing block and a first opening; The drive mechanism is connected to the valve core and rotates to make the first sealing block or the first opening of the valve core align with the first vent hole to switch the air passage on and off.

3. An air pump according to claim 2, characterized in that: The valve core also has a second sealing block and a second opening; The first opening and the second opening are respectively provided on both sides of the connection between the first sealing block and the second sealing block.

4. An air pump according to claim 2, characterized in that: The valve housing is provided with a second vent hole; The first vent and the second vent are arranged symmetrically with respect to the central axis.

5. An air pump according to claim 2, characterized in that: The valve body component includes a positioning component, which includes a retaining ring and a first groove disposed on the outer periphery of the valve core, the retaining ring being assembled in the first groove.

6. An air pump according to claim 5, characterized in that: The positioning component has two parts, which are located on both sides of the valve core in the axial direction.

7. An air pump according to claim 2, characterized in that: The valve body component includes a sealing ring, and the valve core has a second groove on its outer periphery, in which the sealing ring is fitted.

8. An air pump according to claim 2, characterized in that: The control valve assembly also includes a valve end cap; The valve end cap is bolted to the valve body.

9. An air pump according to any one of claims 1-8, characterized in that: It also includes a high-pressure pump assembly, which includes a second chamber and a one-way valve in the second chamber. The second chamber is connected to the first chamber through the one-way valve, and the opening direction of the one-way valve is from the second chamber to the first chamber.

10. An air pump according to claim 9, characterized in that: The high-pressure pump assembly also includes a connecting rod piston assembly and a motor. The connecting rod piston assembly includes a connecting rod assembly and a piston intake valve, and the piston intake valve is movably connected to the connecting rod assembly. The motor drives the connecting rod component to move the piston intake valve axially back and forth in the second cavity to control the on / off state between the second cavity and the first cavity.

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