Double-air-chamber inflator pump

Abstract

The invention discloses a double-air-chamber inflator pump which comprises a shell, an air inlet and an air outlet. A cover body; the air inlet / outlet controls the motor; a first valve and a second valve; a brushless motor; and an air channel conversion sheet. According to the air inlet and outlet control device, the air inlet and outlet control motor controls the first air inlet and outlet and the second air inlet and outlet through the first valve and the second valve, so that the first air inlet and outlet or the second air inlet and outlet is effectively opened at will and singly; the brushless motor can inflate and deflate an object with two or more air cavities in a limited space, and the brushless motor is suitable for various air pump inflatable devices. In addition, compared with an existing structure, manual rotation is not needed, tools are not needed, the first valve and the second valve are directly controlled through the air inlet and outlet control motor, the automation degree is high, use is convenient, and the applicability is excellent.

Description

Technical field:

[0001] The invention relates to the technical field of air pumps, in particular to a double-air-chamber air pump. Background technology:

[0002] In recent years, inflatable products such as inflatable sofas, inflatable cushions, and inflatable beds have become popular among the public due to their portability, comfort, and versatility for both indoor and outdoor use. They are usually made of PVC (polyvinyl chloride), rubber, or other synthetic materials, and are designed to provide temporary sleeping solutions. They are easy to store and carry, making them ideal for temporary use and travel. Such inflatable products usually require an air pump for inflation and deflation, so that they can be quickly deployed and stored, improving the convenience of use.

[0003] At present, there are some air pump valves on the market that can inflate and deflate inflatable products, such as: Chinese invention patent application with patent publication number CN213871227U discloses an air pump valve for an air mattress, which includes: a lower fixed valve body and an upper rotating valve body, the lower fixed valve body is provided with a lower central through hole, a first air inlet pipe, a first air inlet and outlet hole, a first air outlet pipe, a first air inlet and outlet port, a second air inlet pipe, a second air inlet and outlet hole, a second air outlet pipe, and a second air inlet and outlet port; the upper rotating valve body is provided with an upper central through hole, the bottom surface of the upper rotating valve body is provided with a first air guide groove matching the first air inlet and outlet hole and the first air inlet and outlet, a second air guide groove matching the second air inlet and outlet hole and the second air inlet and outlet, a third air guide groove matching the first air inlet and outlet port and / or a fourth air guide groove matching the second air inlet and outlet port, and the top surface of the upper rotating valve body is provided with a knob. The air mattress uses an air pump valve, so that the air mattress can not only give the user a wave-like massage, but also stop the air pump from working at night to ensure the user's rest.

[0004] However, this existing air pump valve still has the following disadvantages:

[0005] 1. In this technical solution, a first air inlet and outlet and a second air inlet and outlet are provided, but the first air inlet and outlet and the second air inlet and outlet cannot be controlled to be opened or closed individually. For an inflatable product with two air cavities, it is impossible to inflate and deflate the two air chambers in sequence;

[0006] 2. In this technical solution, when opening or closing is required, the user can only manually hold the knob and turn the upper rotating valve body to the specified position to inflate or deflate. Since the equipment has high air tightness requirements, it is necessary to apply a certain force or use tools to twist the upper rotating valve body.

[0007] There is a certain operating threshold, which is not friendly enough for novice users.

[0008] In view of this, the inventor proposes the following technical solution. Summary of the invention:

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a double-chamber air pump.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions: a dual-chamber air pump, comprising: a shell, on which a first air inlet and a second air inlet and an outlet are opened; a cover body, which is covered on the shell, and a plurality of air inlet and outlet holes are arranged and distributed on the cover body; it also includes: an air inlet and outlet control motor, which is arranged in the shell; a first valve and a second valve, the first valve is connected to the air inlet and outlet control motor in a transmission manner and can seal the first air inlet and outlet, and the second valve is connected to the air inlet and outlet control motor in a transmission manner and can seal the second air inlet and outlet; a brushless motor, which is arranged in the shell and is used to pump in and out air; an airway conversion plate, which is arranged in the shell in a manner that can slide up and down and is used to switch the air circulation direction.

[0011] Further, in the above technical solution, the first valve includes: a first transmission tooth connected to the inlet and outlet control motor, a first valve cam driven to rotate by the first transmission tooth, a first valve pressure plate slidably arranged on the shell body and capable of closing the first inlet and outlet, a first protective cover arranged on the shell body from bottom to top and covering the periphery of the first valve pressure plate, and a first air-tight spring arranged between the first valve pressure plate and the first protective cover and used to lift the first valve pressure plate upward, wherein the first valve cam is provided with a first recessed portion in an inverted V shape, and the first valve pressure plate is protruding with a first convex piece matching the first recessed portion.

[0012] Further, in the above technical solution, the second valve includes: a second transmission tooth connected to the inlet and outlet control motor, a second valve cam driven to rotate by the second transmission tooth, a second valve pressure plate slidably arranged on the shell body and capable of closing the second inlet and outlet, a second protective cover arranged on the shell body from bottom to top and covering the periphery of the second valve pressure plate, and a second air-tight spring arranged between the second valve pressure plate and the second protective cover and used to lift the second valve pressure plate upward, wherein the second valve cam is provided with a second recess in the shape of an inverted V, and the second valve pressure plate is protruding with a second convex piece matching the second recess.

[0013] Furthermore, in the above technical solution, a first air chamber capable of accommodating the brushless motor is formed in the shell, a motor bracket capable of supporting the brushless motor is installed in the shell, the motor bracket divides the first air chamber into an output chamber and an input chamber, and the motor bracket is provided with a first opening capable of connecting the output chamber with the airway conversion plate, and the motor bracket is also provided with a second air hole capable of connecting the input chamber with the airway conversion plate; an air discharge cover plate is installed in the shell, a circuit board for controlling operation is installed in the shell, a control button is provided on the circuit board, and a gap for air to pass through is formed between the circuit board and the air discharge cover plate.

[0014] Furthermore, in the above technical solution, a second air chamber that can accommodate the first valve and the second valve is formed in the shell, and a sealing plate for guiding the airflow is installed in the shell. The sealing plate is provided with a first mounting cylinder portion and a second mounting cylinder portion for installing the first valve cam and the second valve cam respectively, and the sealing plate is also formed with a deflation guide portion that matches the airway conversion plate.

[0015] Furthermore, in the above technical solution, an airway conversion motor for driving the airway conversion plate to slide up and down is arranged in the shell. The airway conversion motor is located above the airway conversion plate and is transmission-connected to the airway conversion plate through a connecting rod.

[0016] Furthermore, in the above technical solution, a strip hole for connecting with the connecting rod is provided at the upper end of the airway conversion piece, and a shielding portion is formed by protruding downward on the airway conversion piece, and an air guide channel for guiding air circulation is provided on the airway conversion piece.

[0017] Furthermore, in the above technical solution, a valve limiter for driving the first valve and the second valve to open and close is connected to the output shaft of the air inlet and outlet control motor, and the valve limiter has a plurality of tooth segments protruding thereon that can mesh with the first transmission tooth and the second transmission tooth.

[0018] Furthermore, in the above technical solution, the first transmission tooth and the second transmission tooth are fixedly connected to the first valve cam and the second valve cam respectively, and the air inlet and outlet control motor drives the first transmission tooth and the second transmission tooth to rotate through the valve limiter, thereby driving the first valve cam and the second valve cam to rotate respectively; the upper end portion of the first protrusion has a curved surface, and the first protrusion abuts against the first valve cam, and when the first valve cam rotates, the first valve pressure plate is driven to open or close; the upper end portion of the second protrusion has a curved surface, and the second protrusion abuts against the second valve cam, and when the second valve cam rotates, the second valve pressure plate is driven to open or close.

[0019] Furthermore, in the above technical solution, an installation groove is formed in the shell, and a power supply for power supply is arranged in the installation groove; the first air inlet and outlet and the second air inlet and outlet inflate and deflate the two air cavities of the external object to be inflated respectively.

[0020] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: In the present invention, the air inlet and outlet control motor controls the first air inlet and outlet and the second air inlet and outlet through the first valve and the second valve, effectively realizing any single opening of the first air inlet and outlet or the second air inlet and outlet, and realizing a brushless motor to inflate and deflate an object with two or more air cavities in a limited space, which is suitable for various air pump inflatable equipment. In addition, compared with the existing structure, the present invention does not require manual rotation or tools, but directly controls the first valve and the second valve through the air inlet and outlet control motor, which has a high degree of automation, is easy to use, and has excellent applicability. Description of the drawings:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the assembly of the valve pressure plate in the present invention;

[0023] Figure 3 It is a schematic diagram of the decomposed state of the present invention;

[0024] Figure 4 is a cross-sectional schematic diagram of the present invention in an inflated state;

[0025] Figure 5 is a cross-sectional schematic diagram of the present invention in a deflated state;

[0026] Figure 6 It is a schematic diagram of the use state of the valve cam and the valve pressure plate in the present invention;

[0027] Figure 7 It is a schematic diagram of the assembly of the airway conversion sheet, the sealing plate and the motor bracket in the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the present invention after the cover body is removed. Specific implementation method:

[0029] The present invention is further described below in conjunction with specific embodiments and drawings.

[0030] See Figures 1 to 8As shown, a dual-chamber air pump comprises: a shell 1, on which a first air inlet and outlet 11 and a second air inlet and outlet 12 are provided; a cover body 2, which is covered on the shell 1, and a plurality of air inlet and outlet holes 21 are arranged and distributed on the cover body 2; it also comprises: an air inlet and outlet control motor 3, which is arranged in the shell 1; a first valve 31 and a second valve 32, the first valve 31 is connected to the air inlet and outlet control motor 3 in a transmission manner and can seal the first air inlet and outlet 11, and the second valve 32 is connected to the air inlet and outlet control motor 3 in a transmission manner and can seal the second air inlet and outlet 12; a brushless motor 4, which is arranged in the shell 1 and is used to pump air into and out of the first air inlet and outlet 11 and the second air inlet and outlet 12; an airway conversion plate 5, which is arranged in the shell 1 in a manner that can slide up and down and is used to switch the air circulation direction. In the present invention, the air inlet and outlet control motor 3 controls the first air inlet and outlet 11 and the second air inlet and outlet 12 through the first valve 31 and the second valve 32, effectively realizing any single opening of the first air inlet and outlet 11 or the second air inlet and outlet 12, and realizing a brushless motor 4 to inflate and deflate an object with two or more air cavities in a limited space, which is suitable for various air pump inflatable equipment. In addition, compared with the existing structure, the present invention does not require manual rotation or tools, but directly controls the first valve 31 and the second valve 32 through the air inlet and outlet control motor 3, which has a high degree of automation, is easy to use, and has excellent applicability.

[0031] The first valve 31 comprises: a first transmission tooth 311 which is transmission-connected to the air inlet and outlet control motor 3, a first valve cam 312 which is driven to rotate by the first transmission tooth 311, a first valve pressure plate 313 which is slidably mounted on the housing 1 and can close the first air inlet and outlet 11, a first protective cover 314 which is mounted on the housing 1 from bottom to top and covers the periphery of the first valve pressure plate 313, and a first airtight spring 315 which is arranged between the first valve pressure plate 313 and the first protective cover 314 and is used to push the first valve pressure plate 313 upward, wherein the first valve cam 312 is provided with a first concave portion 316 in an inverted V shape, and the first valve pressure plate 313 is protruding with a first convex piece 317 which matches the first concave portion 316. Here, in combination with Figures 4 to 6 As shown, when the air inlet and outlet control motor 3 rotates counterclockwise and drives the first transmission gear 311, and drives the first valve cam 312 to rotate, since the first recess 316 is in an inverted V shape and the end of the first protrusion 317 has a curved surface, the first valve cam 312 will push the first protrusion 317 and move the first valve pressure plate 313 downward until the first protrusion 317 moves out of the first recess 316 and abuts against the bottom of the first valve cam 312. At this time, the first valve pressure plate 313 leaves the first air inlet and outlet 11, so that the first air inlet and outlet 11 is opened.

[0032] The second valve 32 includes: a second transmission tooth 321 that is transmission-connected to the air inlet and outlet control motor 3, a second valve cam 322 that is driven to rotate by the second transmission tooth 321, a second valve pressure plate 323 that is slidably mounted on the housing 1 and capable of closing the second air inlet and outlet 12, a second protective cover 324 that is mounted on the housing 1 from bottom to top and covers the periphery of the second valve pressure plate 323, and a second airtight spring 325 that is disposed between the second valve pressure plate 323 and the second protective cover 324 and is used to push the second valve pressure plate 323 upward, wherein the second valve cam 322 is provided with a second recess 326 in an inverted V shape, and the second valve pressure plate 323 is protruding with a second protrusion 327 that matches the second recess 326. When rotating, the second valve pressure plate 323 is driven to rise and fall to close or open the second air inlet and outlet 12. Here, in combination with Figures 4 to 6 As shown, when the air inlet and outlet control motor 3 rotates clockwise and drives the second transmission gear 321, and drives the second valve cam 322 to rotate, since the second recess 326 is in an inverted V shape and the end of the second protrusion 327 has a curved surface, the second valve cam 322 will push the second protrusion 327 and move the second valve pressing plate 323 downward until the second protrusion 327 moves out of the second recess 326 and abuts against the bottom of the second valve cam 322. At this time, the second valve pressing plate 323 leaves the second air inlet and outlet 12, so that the second air inlet and outlet 12 is opened; at the same time, the first air-tight spring 315 will lift the first valve pressing plate 313, and make the first protrusion 317 of the first valve pressing plate 313 abut against the top of the first recess 316. At this time, the first valve pressing plate 313 just covers the first air inlet and outlet 11 upward, so that the first air inlet and outlet 11 is closed.

[0033] Combination Figure 2 As shown, the housing 1 is formed with a first limiting portion 17 for axially limiting the first valve pressure plate 313 at the first air inlet and outlet 11, and the housing 1 is formed with a second limiting portion 18 for axially limiting the second valve pressure plate 323 at the second air inlet and outlet 12. Here, the first protruding piece 317 of the first valve pressure plate 313 passes through the first limiting portion 17, and the first limiting portion 17 enables the first valve pressure plate 313 to only move up and down but not to rotate in the circumferential direction; the second protruding piece 327 of the second valve pressure plate 323 passes through the second limiting portion 18, and the second limiting portion 18 enables the second valve pressure plate 323 to only move up and down but not to rotate in the circumferential direction.

[0034] A first air chamber 101 capable of accommodating the brushless motor 4 is formed in the shell 1, and a motor bracket 102 capable of supporting the brushless motor 4 is installed in the shell 1, and the motor bracket 102 divides the first air chamber 101 into an output chamber 1011 and an input chamber 1012, and the motor bracket 102 is provided with a first opening 1021 capable of connecting the output chamber 1011 with the airway conversion plate 5, and the motor bracket 102 is also provided with a second air hole 1022 capable of connecting the input chamber 1012 with the airway conversion plate 5; an air release cover 15 is installed in the shell 1, and a circuit board 7 for controlling operation is installed in the shell 1, and a control button 71 is provided on the circuit board 7, and a gap 72 for air to pass through is formed between the circuit board 7 and the air release cover 15. Among them, the control button 71 at least includes an inflation button 711, a deflation button 712 and a switch button 713. Combined with Figure 4 , Figure 5 and Figure 8 As shown, the circuit board 7 is installed at a position higher than the air leakage cover 15 and is formed with a gap 72, which allows air to flow in and out.

[0035] The upper end of the airway conversion piece 5 is provided with a strip hole 51 for connecting with the connecting rod 61 . The airway conversion piece 5 is also formed with a shielding portion 52 protruding downward. The airway conversion piece 5 is provided with an air guide channel 53 for guiding air circulation.

[0036] The shell 1 is provided with an airway conversion motor 6 for driving the airway conversion plate 5 to slide up and down. The airway conversion motor 6 is located above the airway conversion plate 5 and is connected to the airway conversion plate 5 through a connecting rod 61. The shell 1 is formed with a second air chamber 120 for accommodating the first valve 31 and the second valve 32. The shell 1 is provided with a sealing plate 103 for guiding airflow. The sealing plate 103 is provided with a first mounting cylinder 1031 and a second mounting cylinder 1032 for mounting the first valve cam 312 and the second valve cam 322, respectively. The sealing plate 103 is also formed with an air release guide 1033 that matches the airway conversion plate 5. Figure 4 , Figure 5 and Figure 7As shown, in the present invention, when inflation is required, the inflation button 711 is manually pressed, the airway conversion motor 6 will drive the airway conversion plate 5 to move, and make the air guide channel 53 dock with the first opening 1021 of the motor bracket 102. At this time, the output chamber 1011 and the second air chamber 120 are in a connected state. When the brushless motor 4 starts to run, external air enters the interior through the air inlet and outlet holes 21, and is pumped into the first air chamber 101 through the gap 72 and the second opening 1022 in turn, and then passes through the first opening 1021 and the air guide channel 53 to enter the second air chamber 120. Further, the external air is pumped into the object with two air cavities through the first air inlet and outlet 11 or the second air inlet and outlet 12 in turn. When deflation is required, the deflation button 712 is manually pressed, and the airway conversion motor 6 drives the airway conversion plate 5 to move, and the air guide channel 53 is connected to the second air hole 1022 of the motor bracket 102. At this time, the second air chamber 120 and the input chamber 1012 are in a connected state. When the brushless motor 4 starts to run, the air in the two air chambers of the object will be pumped out to the second air chamber 120, and pass through the air guide channel 53 and the second opening 1022 to enter the input chamber 1012. Further, the air will be pumped into the output chamber 1011, and flow out of the output chamber 1011 through the first opening 1021, and finally flow to the inlet and outlet holes 21 through the gap 72 and flow out to the outside through the inlet and outlet holes 21. Of course, the present invention can inflate and deflate objects with more than two air chambers (such as inflatable sofas, inflatable cushions, inflatable beds, etc.).

[0037] The output shaft of the air inlet and outlet control motor 3 is connected with a valve stopper 33 for driving the first valve 31 and the second valve 32 to open and close. The valve stopper 33 has a plurality of tooth segments 331 protruding thereon for meshing with the first transmission tooth 311 and the second transmission tooth 321 .

[0038] The first transmission tooth 311 and the second transmission tooth 321 are fixedly connected to the first valve cam 312 and the second valve cam 322 respectively. The air inlet and outlet control motor 3 drives the first transmission tooth 311 and the second transmission tooth 321 to rotate through the valve limiter 33, thereby driving the first valve cam 312 and the second valve cam 322 to rotate respectively; the upper end of the first protrusion 317 has a curved surface, and the first protrusion 317 abuts against the first valve cam 312. When the first valve cam 312 rotates, the first valve pressure plate 313 is driven to open or close; the upper end of the second protrusion 327 has a curved surface, and the second protrusion 327 abuts against the second valve cam 322. When the second valve cam 322 rotates, the second valve pressure plate 323 is driven to open or close.

[0039] The housing 1 is formed with a mounting groove 16, and a power supply 17 for power supply is arranged in the mounting groove 16; the first air inlet and outlet 11 and the second air inlet and outlet 12 are used to inflate and deflate the two air chambers of the external inflatable object respectively. The power supply 17 is provided with a disassembly button 171, and the disassembly button 171 is connected to a buckle 172, and the buckle 172 can be unlocked by pressing the disassembly button 171, so that the power supply 17 can be quickly disassembled.

[0040] In summary, in the present invention, the air inlet and outlet control motor 3 controls the first air inlet and outlet 11 and the second air inlet and outlet 12 through the first valve 31 and the second valve 32, effectively realizing any single opening of the first air inlet and outlet 11 or the second air inlet and outlet 12, and realizing a brushless motor 4 to inflate and deflate an object with two or more air cavities in a limited space, which is suitable for various air pump inflatable equipment. In addition, compared with the existing structure, the present invention does not require manual rotation or tools, but directly controls the first valve 31 and the second valve 32 through the air inlet and outlet control motor 3, which has a high degree of automation, is easy to use, and has excellent applicability.

[0041] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A double-chamber air pump, characterized in that: include: A shell (1), wherein the shell (1) is provided with a first air inlet and outlet (11) and a second air inlet and outlet (12); A cover body (2) is disposed on the shell body (1), and a plurality of air inlet and outlet holes (21) are arranged and distributed on the cover body (2); An air inlet and outlet control motor (3), which is arranged in the housing (1); A first valve (31) and a second valve (32), wherein the first valve (31) is connected to the air inlet and outlet control motor (3) in a driving manner and can seal the first air inlet and outlet (11), and the second valve (32) is connected to the air inlet and outlet control motor (3) in a driving manner and can seal the second air inlet and outlet (12); a brushless motor (4) disposed in the housing (1) and used for pumping in and out air; An airway conversion sheet (5) is arranged in the housing (1) in a manner that allows it to slide up and down and is used to switch the air flow direction.

2. A double-chamber air pump according to claim 1, characterized in that: The first valve (31) comprises: a first transmission tooth (311) drivingly connected to the air inlet and outlet control motor (3), a first valve cam (312) driven to rotate by the first transmission tooth (311), a first valve pressure plate (313) slidably mounted on the housing (1) and capable of closing the first air inlet and outlet (11), a first protective cover (314) covering the housing (1) from bottom to top and covering the periphery of the first valve pressure plate (313), and a first airtight spring (315) disposed between the first valve pressure plate (313) and the first protective cover (314) and used for pushing the first valve pressure plate (313) upwards, wherein the first valve cam (312) is provided with a first recess (316) in an inverted V shape, and the first valve pressure plate (313) is protrudingly formed with a first protruding piece (317) matching the first recess (316).

3. A double-chamber air pump according to claim 2, characterized in that: The second valve (32) comprises: a second transmission tooth (321) drivingly connected to the air inlet and outlet control motor (3), a second valve cam (322) driven to rotate by the second transmission tooth (321), a second valve pressure plate (323) slidably mounted on the housing (1) and capable of closing the second air inlet and outlet (12), a second protective cover (324) covering the housing (1) from bottom to top and covering the periphery of the second valve pressure plate (323), and a second airtight spring (325) disposed between the second valve pressure plate (323) and the second protective cover (324) and used for lifting the second valve pressure plate (323) upwards, wherein the second valve cam (322) is provided with a second recess (326) in the shape of an inverted V, and the second valve pressure plate (323) is protrudingly formed with a second protrusion (327) matching the second recess (326).

4. A double-chamber air pump according to claim 1, characterized in that: A first air chamber (101) capable of accommodating the brushless motor (4) is formed in the housing (1), a motor bracket (102) capable of supporting the brushless motor (4) is installed in the housing (1), the motor bracket (102) divides the first air chamber (101) into an output chamber (1011) and an input chamber (1012), and the motor bracket (102) is provided with a first opening (1021) capable of connecting the output chamber (1011) with the airway conversion plate (5), and the motor bracket (102) is also provided with a second air hole (1022) capable of connecting the input chamber (1012) with the airway conversion plate (5); An air leakage cover plate (15) is installed in the housing (1), a circuit board (7) for controlling operation is installed in the housing (1), a control button (71) is provided on the circuit board (7), and a gap (72) for air to pass through is formed between the circuit board (7) and the air leakage cover plate (15).

5. A double-chamber air pump according to claim 1, characterized in that: The shell (1) is formed with a second air chamber (120) capable of accommodating the first valve (31) and the second valve (32). The shell (1) is provided with a sealing plate (103) for guiding airflow. The sealing plate (103) is provided with a first mounting cylinder (1031) and a second mounting cylinder (1032) for mounting the first valve cam (312) and the second valve cam (322), respectively. The sealing plate (103) is also formed with an air release guide (1033) matching the airway conversion plate (5).

6. A double-chamber air pump according to claim 1, characterized in that: An airway conversion motor (6) for driving the airway conversion plate (5) to slide up and down is arranged in the housing (1); the airway conversion motor (6) is located above the airway conversion plate (5) and is transmission-connected to the airway conversion plate (5) via a connecting rod (61).

7. A double-chamber air pump according to claim 1, characterized in that: The upper end of the airway conversion piece (5) is provided with a strip hole (51) for connecting with the connecting rod (61), the airway conversion piece (5) is also formed with a shielding portion (52) protruding downward, and the airway conversion piece (5) is provided with an air guide channel (53) for guiding air circulation.

8. A double-chamber air pump according to claim 3, characterized in that: The output shaft of the air inlet and outlet control motor (3) is connected to a valve stopper (33) for driving the first valve (31) and the second valve (32) to open and close, and the valve stopper (33) is protrudingly formed with a plurality of tooth segments (331) for meshing with the first transmission tooth (311) and the second transmission tooth (321).

9. A double-chamber air pump according to claim 8, characterized in that: The first transmission tooth (311) and the second transmission tooth (321) are fixedly connected to the first valve cam (312) and the second valve cam (322) respectively; the air inlet and outlet control motor (3) drives the first transmission tooth (311) and the second transmission tooth (321) to rotate through the valve stopper (33), thereby driving the first valve cam (312) and the second valve cam (322) to rotate respectively; The upper end of the first protrusion (317) has a curved surface, and the first protrusion (317) is in contact with the first valve cam (312). When the first valve cam (312) rotates, the first valve pressure plate (313) is driven to open or close; the upper end of the second protrusion (327) has a curved surface, and the second protrusion (327) is in contact with the second valve cam (322). When the second valve cam (322) rotates, the second valve pressure plate (323) is driven to open or close.

10. A double-chamber air pump according to any one of claims 1 to 9, characterized in that: A mounting groove (16) is formed in the shell (1), and a power supply (17) is arranged in the mounting groove (16); the first air inlet and outlet (11) and the second air inlet and outlet (12) are used to inflate and deflate two air cavities of an external object to be inflated, respectively.

Images