air pump

Abstract

The present invention discloses an air pump, comprising an upper cover and an air bag. The upper cover defines a first exhaust channel, one end of which forms an air outlet. The upper cover also defines a second exhaust channel and a third exhaust channel spaced apart from each other, the second exhaust channel communicating with the first exhaust channel. The air bag is disposed on an axial side of the upper cover, defining a fourth exhaust channel within the air bag. The air bag also defines a first communicating channel, the fourth exhaust channel communicating with the first communicating channel via the third exhaust channel, and communicating with the second exhaust channel via the first communicating channel. The air pump according to the present invention has low operating noise and good sound quality.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid machinery, and in particular to an air pump. Background Art

[0002] Air pumps are widely used in various industries for various purposes, such as pumping, inflating, vacuuming, pressurizing, and circulating gas. However, in related technologies, air pumps are prone to generating noise during operation, which affects the user experience. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an air pump with low operating noise and good sound quality.

[0004] According to an embodiment of the present invention, the air pump includes: an upper cover, in which a first exhaust channel is defined, one end of the first exhaust channel forms an air outlet, the upper cover also helps to define a second exhaust channel and a third exhaust channel arranged at intervals, the second exhaust channel is connected to the first exhaust channel; an airbag, the airbag is arranged on one axial side of the upper cover, in which a fourth exhaust channel is defined, the airbag also helps to define a first connecting channel, the fourth exhaust channel is connected to the first connecting channel through the third exhaust channel, and is connected to the second exhaust channel through the first connecting channel.

[0005] According to the air pump of an embodiment of the present invention, by arranging the second exhaust channel and the third exhaust channel at intervals on the upper cover, and making the second exhaust channel connected with the first exhaust channel, the fourth exhaust channel on the airbag is connected with the first connecting channel through the third exhaust channel, and the fourth exhaust channel is connected with the second exhaust channel through the first connecting channel, the airflow from the fourth exhaust channel to the first exhaust channel needs to flow through the third exhaust channel, the first connecting channel and the second exhaust channel in sequence, which is convenient for extending the flow path of the airflow, making the flow path of the airflow complicated, and helping to increase noise loss, thereby reducing the flow noise of the airflow and the overall noise of the air pump. At the same time, the longer airflow flow path can provide a larger buffer space for the gas, making the airflow flow more stable, thereby further reducing the working noise of the air pump and improving the sound quality of the air pump.

[0006] In some embodiments, the air pump further includes: an air outlet one-way valve, wherein the air outlet one-way valve is provided between the first exhaust channel and the fourth exhaust channel.

[0007] In some embodiments, the gas outlet one-way valve is provided at the inlet and / or outlet of the first communication channel.

[0008] In some embodiments, the air outlet one-way valve is integrally formed with the airbag.

[0009] In some embodiments, there are multiple first communication channels and they are spaced apart along the circumference of the upper cover. Each first communication channel is connected to one second exhaust channel, and each second exhaust channel extends to the first exhaust channel along the radial direction of the upper cover.

[0010] In some embodiments, the airbag has a plurality of deformable airbag cavities, and the plurality of airbag cavities are arranged at intervals along the circumference of the upper cover, and each of the airbag cavities defines a fourth exhaust channel. The upper cover has a mating protrusion on the side surface facing the airbag, and the third exhaust channel passes through the outer circumference of the mating protrusion, and the mating protrusion extends into the fourth exhaust channel. The mating protrusion has a guide slope on the side surface facing the airbag, and the guide slope extends from the outside to the inside, toward the direction close to the fourth exhaust channel.

[0011] In some embodiments, a first communicating port and a second communicating port are formed at both ends of the first communicating channel, respectively, the first communicating port and the second communicating port are both formed on the airbag, the first communicating port and the outlet of the third exhaust channel are arranged opposite to each other along the axial direction of the upper cover, and the second communicating port and the inlet of the second exhaust channel are arranged opposite to each other along the axial direction of the upper cover.

[0012] In some embodiments, the first communicating port and the second communicating port pass through the airbag, and the air pump further includes: a mounting seat, which is arranged on a side of the airbag facing away from the upper cover and forms a second communicating channel, and the two ends of the second communicating channel are respectively connected to the first communicating port and the second communicating port, and the second communicating channel, the first communicating port and the second communicating port together define the first communicating channel.

[0013] In some embodiments, a side of the second communication channel facing the airbag is open.

[0014] In some embodiments, the air pump further includes: an air outlet one-way valve, which is arranged at the edge of the second communication port, and covers a portion of the second communication port and the outlet of the second communication channel.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0017] Figure 1is a cross-sectional view of an air pump according to one embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Exploded view of the air pump shown in ;

[0019] Figure 3 yes Figure 2 Schematic diagram of the upper cover shown in ;

[0020] Figure 4 yes Figure 3 A cross-sectional view of the upper cover shown in ;

[0021] Figure 5 yes Figure 3 Another schematic diagram of the upper cover shown in ;

[0022] Figure 6 yes Figure 2 Schematic diagram of the airbag shown in ;

[0023] Figure 7 yes Figure 2 A cross-sectional view of the air bag and push head shown in FIG;

[0024] Figure 8 yes Figure 6 Another schematic diagram of the airbag shown in ;

[0025] Figure 9 yes Figure 2 A schematic diagram of the mount shown in ;

[0026] Figure 10 yes Figure 9 a cross-sectional view of the mount shown in ;

[0027] Figure 11 yes Figure 9 Another schematic diagram of the mount shown in .

[0028] Reference numerals:

[0029] Air pump 100,

[0030] Upper cover 1, central axis 10,

[0031] The first exhaust passage 1a, the air outlet 1b, the second exhaust passage 1c, the third exhaust passage 1d,

[0032] Matching protrusion 11, guiding slope 11a,

[0033] Airbag 2,

[0034] The fourth exhaust passage 2a, the first communication passage 2b, the first communication port 2c, the second communication port 2d, the installation cavity 2e, the airbag cavity 21, the partition 22, the air outlet 22a, the one-way valve plate 23,

[0035] Mounting seat 3, second communication channel 3a, mounting through hole 3b,

[0036] Outlet one-way valve 4,

[0037] Driving device 5, driver 51, connecting rod assembly 52, eccentric wheel 521, connecting rod 522, push head 523,

[0038] Base 6. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0041] Hereinafter, an air pump 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0042] like Figure 1 and Figure 3 As shown, the air pump 100 includes an upper cover 1, which defines a first exhaust channel 1a, and one end of the first exhaust channel 1a forms an air outlet 1b; the upper cover 1 also helps define a second exhaust channel 1c and a third exhaust channel 1d, and the second exhaust channel 1c and the third exhaust channel 1d are arranged at intervals, wherein the second exhaust channel 1c is connected to the first exhaust channel 1a, and the second exhaust channel 1c is directly or indirectly connected to the first exhaust channel 1a.

[0043] It should be noted that "the air outlet 1b of the upper cover 1" refers to the air outlet of the upper cover 1, that is, the air flow flowing into the first exhaust channel 1a is discharged from the upper cover 1 through the air outlet 1b, and the air outlet 1b can refer only to the air outlet 1b on the upper cover 1 alone, or it can refer to the air outlet 1b of the entire air pump 100.

[0044] like Figure 1 and Figure 6 As shown, the air pump 100 further includes an airbag 2, which is provided on one axial side of the upper cover 1. A fourth exhaust channel 2a is defined in the airbag 2. The airbag 2 also participates in defining a first communication channel 2b. The fourth exhaust channel 2a is connected to the first communication channel 2b through the third exhaust channel 1d, and the fourth exhaust channel 2a is connected to the second exhaust channel 1c through the first communication channel 2b. The airflow path is: fourth exhaust channel 2a → third exhaust channel 1d → first communication channel 2b → second exhaust channel 1c → first exhaust channel 1a (for example, Figure 1 The arrow shown in the figure is used to indicate the flow direction of the airflow). Obviously, in the airflow direction, the third exhaust channel 1d is located upstream of the first connecting channel 2b, and the third exhaust channel 1d and the first connecting channel 2b are both located upstream of the second exhaust channel 1c. The airflow from the fourth exhaust channel 2a to the first exhaust channel 1a needs to flow through the third exhaust channel 1d, the first connecting channel 2b and the second exhaust channel 1c in sequence, so as to extend the flow path of the airflow. Without over-complicating the structure of the air pump 100, the flow path of the airflow is complicated, which is conducive to increasing the noise loss, thereby reducing the flow noise of the airflow and the overall noise of the air pump 100. At the same time, the longer airflow path can provide a larger buffer space for the gas, making the airflow flow more stable, thereby further reducing the working noise of the air pump 100 and improving the sound quality of the air pump 100.

[0045] It should be noted that "the upper cover 1 participates in defining the second exhaust channel 1c and the third exhaust channel 1d". For the second exhaust channel 1c, the second exhaust channel 1c can be defined only by the upper cover 1, or it can be defined jointly by the upper cover 1 and other components. For example, the second exhaust channel 1c can be defined jointly by the upper cover 1 and the airbag 2; for the third exhaust channel 1d, the third exhaust channel 1d can be defined only by the upper cover 1, or it can be defined jointly by the upper cover 1 and other components. For example, the third exhaust channel 1d can be defined jointly by the upper cover 1 and the airbag 2.

[0046] For example, in Figure 3 In the example, the second exhaust channel 1c is formed by a recessed portion of the surface of the upper cover 1 on one side facing the airbag 2, so that the side of the second exhaust channel 1c facing the airbag 2 is open, and the airbag 2 is fixedly connected to the upper cover 1, so that the airbag 2 closes the open side of the second exhaust channel 1c, then the airbag 2 and the upper cover 1 jointly define the second exhaust channel 1c, which facilitates the molding of the second exhaust channel 1c; the third exhaust channel 1d is formed by a recessed portion of the surface of the upper cover 1 on one side facing the airbag 2, so that the side of the third exhaust channel 1d facing the airbag 2 is open, and the airbag 2 closes the open side of the third exhaust channel 1d, then the airbag 2 and the upper cover 1 jointly define the third exhaust channel 1d.

[0047] According to the air pump 100 of an embodiment of the present invention, a second exhaust channel 1c and a third exhaust channel 1d are arranged at intervals on the upper cover 1, and the second exhaust channel 1c is connected to the first exhaust channel 1a, and the fourth exhaust channel 2a on the airbag 2 is connected to the first connecting channel 2b through the third exhaust channel 1d, and the fourth exhaust channel 2a is connected to the second exhaust channel 1c through the first connecting channel 2b. The airflow from the fourth exhaust channel 2a to the first exhaust channel 1a needs to flow through the third exhaust channel 1d, the first connecting channel 2b and the second exhaust channel 1c in sequence, which is convenient for extending the flow path of the airflow, making the flow path of the airflow complicated, and is conducive to increasing noise loss, thereby reducing the flow noise of the airflow and the overall noise of the air pump 100. At the same time, the longer airflow flow path can provide a larger buffer space for the gas, making the airflow flow more stable, thereby further reducing the working noise of the air pump 100, improving the sound quality of the air pump 100, and thereby improving the user experience.

[0048] In some embodiments, as Figure 1 and Figure 6 As shown, the air pump 100 also includes an air outlet one-way valve 4, which is arranged between the first exhaust channel 1a and the fourth exhaust channel 2a. The air outlet one-way valve 4 can limit the direction of the airflow to avoid backflow of the airflow, and ensure that the airflow flows from the fourth exhaust channel 2a to the first exhaust channel 1a, so as to avoid mixing of the airflow in the air pump 100 and ensure the working efficiency of the air pump 100.

[0049] In some embodiments, as Figure 1 and Figure 6 As shown, the gas outlet one-way valve 4 is provided at the inlet and / or outlet of the first connecting channel 2b. It should be noted that, in the description of this application, the meaning of "and / or" includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which both A and B are satisfied. The setting of the gas outlet one-way valve 4 can include the following multiple schemes: 1. A gas outlet one-way valve 4 is provided at the inlet of the first connecting channel 2b; 2. A gas outlet one-way valve 4 is provided at the outlet of the first connecting channel 2b; 3. A gas outlet one-way valve 4 is provided at the inlet and outlet of the first connecting channel 2b, respectively.

[0050] Of course, the gas outlet one-way valve 4 can also be arranged at other positions.

[0051] In some embodiments, as Figure 6As shown, the air outlet one-way valve 4 is integrally formed with the airbag 2. For example, the air outlet one-way valve 4 is integrally formed at the edge of the inlet of the first connecting channel 2b and / or the edge of the outlet of the first connecting channel 2b. This can save the assembly process of the air outlet one-way valve 4 and the airbag 2, facilitate the molding of the air outlet one-way valve 4, reduce the processing cost, and at the same time ensure the connection reliability of the air outlet one-way valve 4 and the airbag 2, and ensure the reliable use of the air outlet one-way valve 4.

[0052] In some embodiments, as Figure 2 、 Figure 3 and Figure 5 As shown, there are multiple first communicating channels 2b, and the multiple first communicating channels 2b are arranged at intervals along the circumference of the upper cover 1, each first communicating channel 2b is connected to a second exhaust channel 1c, and each second exhaust channel 1c extends to the first exhaust channel 1a along the radial direction of the upper cover 1.

[0053] For example, if there is only one first exhaust channel 1a, it is convenient for multiple second exhaust channels 1c to converge into the same first exhaust channel 1a, so that the airflow flowing through the multiple second exhaust channels 1c can be discharged from the upper cover 1 through the same first exhaust channel 1a; wherein, the first exhaust channel 1a can be formed at the center position of the upper cover 1, for example, the central axis of the first exhaust channel 1a coincides with the central axis 10 of the upper cover 1.

[0054] It should be noted that, in the description of the present invention, “plurality” means two or more than two; the circumferential direction of the upper cover 1 is the direction around the central axis 10 of the upper cover 1 .

[0055] In some embodiments, as Figure 4-Figure 6 As shown, the airbag 2 has a plurality of deformable airbag cavities 21, and the plurality of airbag cavities 21 are arranged at intervals along the circumference of the upper cover 1, and each airbag cavity 21 defines a fourth exhaust channel 2a. Squeezing the airbag cavity 21 can discharge the airflow in the fourth exhaust channel 2a to the third exhaust channel 1d, and releasing the airbag cavity 21 can make the airflow at the air inlet of the air pump 100 flow to the fourth exhaust channel 2a, so as to realize the suction and exhaust of the air pump 100; and when the air pump 100 is working, the plurality of airbag cavities 21 can be squeezed and released in turn, so that the plurality of fourth exhaust channels 2a are exhausted toward the third exhaust channel 1d in turn, which is convenient for realizing the continuous exhaust of the air pump 100 and ensuring the stable exhaust of the air pump 100.

[0056] For example, in Figure 1 and Figure 4-Figure 6In the example, a partition 22 is provided in the airbag cavity 21 to separate the internal space of the airbag cavity 21 into a fourth exhaust channel 2a and a mounting cavity 2e. The connecting rod assembly 52 of the air pump 100 can be installed in the mounting cavity 2e to achieve the squeezing and release of the airbag cavity 21; an air outlet hole 22a is formed on the partition 22, and the air outlet hole 22a communicates with the mounting cavity 2e and the fourth exhaust channel 2a. A one-way valve sheet 23 is provided at the edge of the air outlet hole 22a, and an air inlet hole is formed on the connecting rod assembly 52. The air inlet and the air outlet 22a are staggered, and the air inlet and the one-way valve plate 23 are arranged opposite each other. When the connecting rod assembly 52 squeezes the airbag cavity 21, the space of the fourth exhaust channel 2a is reduced. Due to the restriction of the one-way valve plate 23, the airflow in the fourth exhaust channel 2a is discharged to the third exhaust channel 1d. When the connecting rod assembly 52 releases the airbag cavity 21, the space in the fourth exhaust channel 2a increases, and the airflow at the air inlet pushes open the one-way valve plate 23 and flows to the fourth exhaust channel 2a.

[0057] Optionally, the one-way valve plate 23 is integrally formed with the partition plate 22 .

[0058] like Figure 1 、 Figure 3 and Figure 4 As shown, the upper cover 1 has a mating protrusion 11 on the side facing the airbag 2. The mating protrusion 11 can be formed by protruding from the side of the upper cover 1 facing the airbag 2. The third exhaust channel 1d runs through the outer periphery of the mating protrusion 11, and the mating protrusion 11 extends into the fourth exhaust channel 2a. This allows the mating protrusion 11 to not completely block the fourth exhaust channel 2a, facilitating quick assembly of the upper cover 1 and the airbag 2. Furthermore, the mating protrusion 11 has a guiding slope 11a on the side facing the airbag 2. The guiding slope 11a extends from the outside to the inside, toward the fourth exhaust channel 2a. This guiding slope 11a can better guide and buffer the airflow discharged from the fourth exhaust channel 2a, ensuring stable airflow.

[0059] It should be noted that the direction “outward” refers to the direction away from the central axis 10 of the upper cover 1 in the radial direction of the upper cover 1 , and the opposite direction is defined as the direction “inward”.

[0060] For example, in Figure 2 and Figure 3 In the example, there are three airbag cavities 21 and three third exhaust channels 1d, respectively. Therefore, there are also three fourth exhaust channels 2a, each of which communicates with a corresponding first communication channel 2b via a corresponding third exhaust channel 1d. There may also be multiple first communication channels 2b, each of which communicates with a third exhaust channel 1d.

[0061] Optionally, in Figure 1 and Figure 2In the example, the first connecting channel 2b extends along a curve, so as to further extend the airflow path, so that the airflow path has a certain degree of complexity, so as to further reduce the airflow noise.

[0062] In some embodiments, as Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, a first communicating port 2c and a second communicating port 2d are respectively formed at both ends of the first communicating channel 2b, and the first communicating port 2c and the second communicating port 2d are both formed on the airbag 2. The first communicating port 2c and the outlet of the third exhaust channel 1d are arranged opposite to each other along the axial direction of the upper cover 1, so that the airflow in the third exhaust channel 1d can flow to the first communicating channel 2b through the first communicating port 2c, and the second communicating port 2d and the inlet of the second exhaust channel 1c are arranged opposite to each other along the axial direction of the upper cover 1, so that the airflow in the first communicating channel 2b can flow to the second exhaust channel 1c through the second communicating port 2d, so as to ensure that the first communicating channel 2b effectively connects the third exhaust channel 1d and the second exhaust channel 1c.

[0063] In some embodiments, as Figure 1 、 Figure 2 and Figure 6 and Figure 9 As shown, the first communication port 2c and the second communication port 2d extend through the airbag 2. For example, the first communication port 2c extends through the airbag 2 axially along the upper cover 1, while the second communication port 2d extends through the airbag 2 axially along the upper cover 1. The air pump 100 further includes a mounting base 3, which is disposed on the side of the airbag 2 facing away from the upper cover 1 and defines a second communication channel 3a. The second communication channel 3a's ends are connected to the first communication port 2c and the second communication port 2d, respectively. The second communication channel 3a, together with the first and second communication ports 2c and 2d, defines a first communication channel 2b. Thus, the first communication port 2c can serve as the inlet of the first communication channel 2b, while the second communication port 2d can serve as the outlet of the first communication channel 2b. Thus, by providing the second communication channel 3a on the mounting base 3 and defining the first communication channel 2b together with the first and second communication ports 2c and 2d, the formation of the first communication channel 2b is facilitated, thereby simplifying the structure of the airbag 2.

[0064] Optionally, in Figure 9 and Figure 10 In the example shown, the side of the second communication channel 3a facing the airbag 2 is open. The second communication channel 3a can be formed by recessing a portion of the surface of the mounting base 3 facing the airbag 2, further facilitating the processing and forming of the second communication channel 3a. Of course, the side of the second communication channel 3a facing the airbag 2 can also be closed.

[0065] like Figure 1 、 Figure 9 and Figure 10 As shown, mounting base 3 further includes mounting holes 3b extending axially through both ends of mounting base 3 along upper cover 1. Airbag cavity 21 engages with mounting holes 3b and extends beyond the side of mounting holes 3b away from upper cover 1, facilitating connection between airbag cavity 21 and connecting rod assembly 52. Multiple mounting holes 3b are provided, with each second connecting passage 3a located between two adjacent mounting holes 3b.

[0066] like Figure 1 and Figure 2 As shown, the air pump 100 also includes a driving device 5, which includes a driver 51 and a connecting rod assembly 52. The driver 51 drives the connecting rod assembly 52 to operate; the connecting rod assembly 52 includes an eccentric wheel 521, a connecting rod 522 and a push head 523. The eccentric wheel 521 is installed on the driving shaft of the driver 51 to be driven to rotate by the driving shaft. A mating hole is formed on the eccentric wheel 521, and the mating hole is tilted relative to the axial direction of the driving shaft. The connecting rod 522 is mated in the mating hole, and the connecting rod 522 is tilted relative to the axial direction of the driving shaft. The other end of the connecting rod 522 is matched with the push head 523. The push head 523 includes a plurality of matching parts, and the matching parts are matched with the installation cavity 2e. The air inlet is formed on the matching parts. Each matching part swings under the drive of the connecting rod 522 to squeeze and release the airbag cavity 21. The air pump 100 further includes a base 6 , a driver 51 is mounted outside the base 6 , and the base 6 and the mounting seat 3 together define an accommodating cavity, in which the connecting rod assembly 52 is disposed.

[0067] In some embodiments, as Figure 6 As shown, the air pump 100 also includes an air outlet one-way valve 4, which is arranged at the edge of the second connecting port 2d. The air outlet one-way valve 4 covers a part of the second connecting port 2d, and the air outlet one-way valve 4 covers the outlet of the second connecting channel 3a, so that the outlet of the second connecting channel 3a and the second connecting port 2d are staggered. The airflow at the outlet of the second connecting channel 3a pushes open the air outlet one-way valve 4 and flows through the second connecting port 2d to the second exhaust channel 1c, ensuring the connection between the second connecting channel 3a and the second exhaust channel 1 and the one-way flow of the airflow.

[0068] Optionally, in Figure 6 and Figure 7 In the example, the air outlet one-way valve 4 is formed into a plate-like structure, and the air outlet one-way valve 4 is integrally formed at the edge of the second connecting port 2d. That is to say, the air outlet one-way valve 4 and the edge part of the second connecting port 2d are integrally formed, which can save the assembly process of the air outlet one-way valve 4 and the airbag 2, facilitate the molding of the air outlet one-way valve 4, reduce the processing cost, and at the same time ensure the connection reliability of the air outlet one-way valve 4 and the airbag 2, and ensure the reliable use of the air outlet one-way valve 4.

[0069] Of course, the gas outlet one-way valve 4 can also be arranged at the edge of the first communication port 2c.

[0070] Other structures and operations of the air pump 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0072] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0073] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0074] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An air pump (100), characterized in that: include: An upper cover (1), wherein a first exhaust channel (1a) is defined within the upper cover (1), an air outlet (1b) is formed at one end of the first exhaust channel (1a), and the upper cover (1) further defines a second exhaust channel (1c) and a third exhaust channel (1d) that are spaced apart, the second exhaust channel (1c) being in communication with the first exhaust channel (1a); An airbag (2), the airbag (2) being arranged on one axial side of the upper cover (1), the airbag (2) defining a fourth exhaust channel (2a) therein, the airbag (2) also helping to define a first communication channel (2b), the fourth exhaust channel (2a) being in communication with the first communication channel (2b) via the third exhaust channel (1d), and being in communication with the second exhaust channel (1c) via the first communication channel (2b); There are a plurality of first communication channels (2b) arranged at intervals along the circumference of the upper cover (1); each first communication channel (2b) is connected to one second exhaust channel (1c); and each second exhaust channel (1c) extends radially along the upper cover (1) to the first exhaust channel (1a).

2. The air pump (100) according to claim 1, characterized in that Also includes: An air outlet one-way valve (4), the air outlet one-way valve (4) is arranged between the first exhaust channel (1a) and the fourth exhaust channel (2a).

3. The air pump (100) according to claim 2, characterized in that The air outlet one-way valve (4) is provided at the inlet and / or outlet of the first communication channel (2b).

4. The air pump (100) according to claim 3, characterized in that The air outlet one-way valve (4) is integrally formed with the air bag (2).

5. The air pump (100) according to claim 1, characterized in that The airbag (2) has a plurality of deformable airbag cavities (21), the plurality of airbag cavities (21) are arranged at intervals along the circumference of the upper cover (1), and each of the airbag cavities (21) defines a fourth exhaust channel (2a). The upper cover (1) has a matching protrusion (11) on one side of the surface facing the airbag (2), the third exhaust channel (1d) passes through the outer periphery of the matching protrusion (11), the matching protrusion (11) extends into the fourth exhaust channel (2a), and the matching protrusion (11) has a guiding inclined surface (11a) on one side of the surface facing the airbag (2), and the guiding inclined surface (11a) extends from the outside to the inside in a direction close to the fourth exhaust channel (2a).

6. The air pump (100) according to any one of claims 1 to 5, characterized in that A first communication port (2c) and a second communication port (2d) are respectively formed at both ends of the first communication channel (2b); the first communication port (2c) and the second communication port (2d) are both formed on the airbag (2); the first communication port (2c) and the outlet of the third exhaust channel (1d) are arranged opposite to each other along the axial direction of the upper cover (1); and the second communication port (2d) and the inlet of the second exhaust channel (1c) are arranged opposite to each other along the axial direction of the upper cover (1).

7. The air pump (100) according to claim 6, characterized in that The first communication port (2c) and the second communication port (2d) penetrate the air bag (2), and the air pump (100) further comprises: A mounting seat (3) is provided on a side of the airbag (2) facing away from the upper cover (1) and is provided with a second communication channel (3a), both ends of the second communication channel (3a) being respectively connected to the first communication port (2c) and the second communication port (2d), and the second communication channel (3a) and the first communication port (2c) and the second communication port (2d) jointly define the first communication channel (2b).

8. The air pump (100) according to claim 7, characterized in that The second communication channel (3a) is opened on one side facing the airbag (2).

9. The air pump (100) according to claim 7, characterized in that Also includes: An air outlet one-way valve (4), the air outlet one-way valve (4) is arranged at the edge of the second communication port (2d), the air outlet one-way valve (4) covers a portion of the second communication port (2d) and covers the outlet of the second communication channel (3a).

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