High-low pressure air pump

Abstract

The utility model provides a high-low pressure air pump. The high-low pressure air pump comprises a shell, an air suction part, an air inflation part, an electric diaphragm pump assembly and a power source part. The air suction part comprises an air suction port and a first air channel, and a motor is arranged in the air suction part; the inflating part comprises an inflating port and a third air passage, and the first air passage is communicated with the third air passage through a second air passage; the electric diaphragm pump assembly comprises a plurality of electric diaphragm pumps, and each electric diaphragm pump is used for pressurizing sucked air and outputting the air into the inflation part; the power supply part comprises a detachable battery. The multiple electric diaphragm pumps are arranged to be connected with the air suction part and the air inflation part, air flow generated when the multiple electric diaphragm pumps work at the same time can meet the high-pressure requirement, noise generated during high-pressure air inflation is reduced, and the user experience feeling is improved. And through the arrangement of the power supply part, a power supply can be detached according to needs, so that replacement, maintenance or charging can be carried out conveniently. The device has the characteristics of simple structure, portability and the like, and is beneficial to popularization and use.

Description

Technical Field

[0001] The present application relates to the technical field of air pumps, and in particular to a high and low pressure air pump. Background Art

[0002] In the prior art, high- and low-pressure air pumps are air pumps with two functions: inflation and suction. The high-pressure pump in the high- and low-pressure air pumps is operated by a motor-controlled piston assembly, so that inflation is performed after the high pressure in the high-pressure pump reaches a high pressure. During the inflation process, the operation of the piston assembly will generate relatively loud noise. In addition, in the prior art, the piston assembly is arranged inside the high-pressure pump, which is not conducive to inspection and replacement when a fault occurs.

[0003] In summary, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a high- and low-pressure air pump, which can reduce the noise generated during high-pressure inflation.

[0005] The present application specifically provides a high- and low-pressure air pump, comprising a housing, a movement and a power supply unit arranged inside the housing, the movement comprising an air intake unit and an air charging unit, the air charging unit comprising an air charging unit housing and an electric diaphragm pump assembly; the electric diaphragm pump assembly comprises a plurality of electric diaphragm pumps, and the plurality of electric diaphragm pumps are used to perform multi-stage air charging into the air charging unit housing; the air intake unit and the air charging unit housing are both arranged on the same side of the electric diaphragm pump assembly, and the power supply unit is arranged on the other side of the electric diaphragm pump assembly;

[0006] The air intake portion includes an air intake port and a first air passage, wherein the first air passage is arranged inside the air intake portion along the axial direction of the air intake portion, the air intake port is communicated with one end of the first air passage, and the air intake portion further includes a fan blade and a motor for driving the fan blade to rotate;

[0007] The inflation portion shell includes an inflation port and a third air channel. The third air channel is disposed inside the inflation portion shell and arranged along the axial direction of the inflation portion shell. The inflation port is connected to the third air channel. The electric diaphragm pump is connected to the third air channel through a hose. The first air channel and the third air channel are connected through a second air channel.

[0008] In one practicable manner, a connection portion is provided between the air inhalation portion and the air inflation portion, the second airway is provided in the connection portion, the second airway is a one-way airway, and the second airway is used to transport the gas in the first airway to the third airway.

[0009] In one feasible manner, a sealing plate is provided in the middle of the inflation portion, the sealing plate is arranged perpendicular to the axis of the inflation portion, a plurality of air inlet holes are provided on the sealing plate, a valve plate is provided on the side of the sealing plate close to the inflation port, the valve plate is used to seal the plurality of air inlet holes, the center of the valve plate is fixedly connected to the center of the sealing plate, and the airflow can blow open the surrounding side of the valve plate through the air inlet holes.

[0010] In one practicable manner, a power supply compartment is disposed in the housing, and the power supply compartment is used to place the power supply unit.

[0011] In one feasible manner, the side opening of the power supply compartment has a compartment cover disposed at the opening, a hinge seat disposed on one side of the compartment cover, the compartment cover is rotatably connected to the outer shell via the hinge seat, and a side of the compartment cover opposite to the hinge seat is buckled with the outer shell.

[0012] In one feasible manner, a plurality of first magnetic attraction parts are arranged on the side of the compartment cover opposite to the hinge seat, the first magnetic attraction part is a cylindrical iron block or a magnet block, a lock hole is arranged at the corresponding position of the outer shell, and the second magnetic attraction part is arranged in the lock hole; when the compartment cover is closed, the first magnetic attraction part is inserted into the lock hole and connected to the second magnetic attraction part.

[0013] In one practicable manner, a power connection socket is provided in the power compartment, the power connection socket includes one or more electrode plugs, one or more groups of electrode springs are provided at corresponding positions on the power supply unit, and a power connection area is formed between each group of electrode springs.

[0014] In one practicable manner, a plurality of supporting ribs are provided on the inner wall of the power supply compartment, and the plurality of supporting ribs are arranged perpendicular to the inner wall of the power supply compartment.

[0015] In one practicable manner, the outer shell includes a face cover and a bottom cover that are fixedly connected, and a receiving cavity is formed inside the face cover and the bottom cover when the face cover and the bottom cover are buckled together; movement brackets are provided on the opposite surfaces of the face cover and the bottom cover, and after the face cover and the bottom cover are fixedly connected, the movement bracket is clamped on the outside of the air intake part and the inflation part.

[0016] In one practicable manner, a control unit is provided on the cover, the control unit includes a display screen, buttons and a control circuit board, the control circuit board is provided on the inner side of the cover, and the control circuit board is respectively communicatively connected with the movement and the power supply unit.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] In the technical solution of the present application, by setting a plurality of electric diaphragm pumps to connect the air intake part and the air charging part, the airflow generated by the simultaneous operation of the plurality of electric diaphragm pumps can not only meet the high pressure demand, but also reduce the noise during high pressure inflation, thereby improving the user experience. Through the setting of a plurality of electric diaphragm pumps, when one or more of the electric diaphragm pumps are damaged, the remaining electric diaphragm pumps can still maintain normal operation without affecting the use of high and low pressure air pumps. By setting a hose between the electric diaphragm pump and the air charging part housing, the layout space of the movement can be saved to reduce the volume of the high and low pressure air pumps for easy carrying and use. By setting a valve sheet on the sealing plate, the present application can meet the needs of various working conditions such as low pressure inflation, high pressure inflation and exhaust. Through the setting of the power supply part, the power supply can be removed as needed for replacement, maintenance or charging. The high and low pressure air pumps provided in the present application have the characteristics of simple structure and easy carrying, which is conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of the high and low pressure air pumps according to an embodiment of the utility model.

[0020] Figure 2 It is a structural schematic diagram of a movement in a high and low pressure air pump according to an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of the assembly structure of the cover of the movement in the high and low pressure air pump of the embodiment of the utility model.

[0022] Figure 4 It is an exploded view of the inflation part of the high and low pressure air pump of the embodiment of the utility model.

[0023] Figure 5 It is another exploded view of the inflation part of the high and low pressure air pump of the embodiment of the utility model.

[0024] Figure 6 It is a schematic diagram of the assembly structure of the power supply unit in the high and low pressure air pump of the embodiment of the utility model.

[0025] The reference numerals are described as follows:

[0026] 1. Air intake part; 11. Air intake port; 12. First air duct; 13. Cooling fan; 2. Air charging part; 21. Air charging port; 22. Third air duct; 23. Upper shell; 24. Sealing plate; 25. Rear end cover; 26. Valve plate; 27. Air intake interface; 28. Air intake hole; 3. Electric diaphragm pump assembly; 31. Hose; 4. Power supply compartment; 41. Compartment cover; 42. Removable battery; 43. Lock hole; 44. Power connection socket; 45. Electrode plug; 5. Shell; 51. Surface cover; 52. Bottom cover; 53. Air vent; 54. Filter element; 55. Through hole; 56. Movement bracket; 57. Support rib plate; 6. Connecting part; 71. Air pressure sensor; 72. Button; 73. Display screen; 74. Control circuit board. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0031] See also Figures 1 to 6The present application provides a high- and low-pressure air pump, comprising a housing 5 and a movement and a power supply unit arranged inside the housing 5, wherein the movement comprises an air intake unit 1 and an air charging unit 2, wherein the air charging unit 2 comprises an air charging unit housing and an electric diaphragm pump assembly 3; the electric diaphragm pump assembly 3 comprises a plurality of electric diaphragm pumps, and the plurality of electric diaphragm pumps are used to perform multi-stage air charging into the air charging unit housing;

[0032] The suction part and the inflation part shell are both arranged on the same side of the electric diaphragm pump assembly, and the power supply part is arranged on the other side of the electric diaphragm pump assembly, so that the movement and the power supply part are arranged more compactly in the outer shell, thereby reducing the volume of the air pump and avoiding the heat dissipation of the power supply affecting the normal operation of the movement.

[0033] The air intake part 1 includes an air intake port 11 and a first air duct 12. The first air duct 12 is arranged inside the air intake part 1 along the axial direction of the air intake part 1. The air intake port 11 is connected to one end of the first air duct 12. The air intake part also includes a fan blade and a motor for driving the fan blade to rotate.

[0034] The inflatable part 2 includes an inflatable port 21 and a third air passage 22. The third air passage 22 is disposed inside the inflatable part 2 and arranged along the axial direction of the inflatable part 2. The inflatable port 21 is communicated with the third air passage 22. The axis of the inflatable part 2 is parallel to the axis of the air inlet 1. The inflatable port 21 and the air inlet 11 are disposed on the same side of the housing 5 and extend outward from the housing 5.

[0035] A connecting portion 6 is provided between the air inhalation portion 1 and the inflation portion 2, and a second air channel is provided in the connecting portion 6. The second air channel is used to connect the first air channel 12 and the third air channel 22. The second air channel is a one-way air channel and is used to transport the gas in the first air channel to the third air channel.

[0036] It should be noted that a one-way valve is provided in the second airway, and the one-way valve is used to control the direction of gas flow. During inflation or inhalation, the gas in the first airway can only flow to the third airway, preventing the gas in the third airway from flowing back into the first airway, thereby avoiding backflow.

[0037] The plurality of electric diaphragm pumps are respectively connected to the third air passage through a hose 31, and the high-pressure airflow generated by the plurality of electric diaphragm pumps is delivered to the inflatable part 2, and the inflatable part 2 is inflated in multiple stages to meet the high-pressure inflation requirements of the high- and low-pressure air pumps. Moreover, when one or more of the electric diaphragm pumps are damaged, the remaining electric diaphragm pumps can still maintain normal operation without affecting the use of the high- and low-pressure air pumps.

[0038] It should be noted that multiple electric diaphragm pumps work together, and all of them can be started, or one or more of them can be started according to demand. The number of electric diaphragm pumps to be started is set according to the specific inflation pressure requirements. Each electric diaphragm pump is connected to the third air channel through a hose 31. Considering the flexibility of the hose 31, it can be bent and arranged to save the space occupied by the movement, so as to reduce the volume of the high and low pressure air pumps and facilitate carrying and use.

[0039] Specifically, Figure 1 and Figure 2 As shown, in this embodiment, four electric diaphragm pumps are provided. The high-pressure airflow generated by the four electric diaphragm pumps working simultaneously can not only meet the high-pressure inflation demand, but also reduce the noise of the high-pressure pump when working, thereby improving the user experience. After the electric diaphragm pump is started, its diaphragm oscillates back and forth, thereby forming a vacuum and pressure area, causing the gas to be sucked into the electric diaphragm pump and then pushed out, and the gas is pushed into the third air channel 22 through the hose 31. This structure makes the air pump quieter during operation.

[0040] It should be noted that the power supply unit can be configured as a built-in power supply fixedly connected to the inside of the housing, or can be configured as a removable battery. In this embodiment, the power supply unit is configured as a removable battery 42, and the high and low pressure air pumps are powered by the removable battery 42.

[0041] In one practicable manner, if Figure 4 and Figure 5 As shown, the inflation portion shell includes an upper shell 23 and a rear end cover 25, the inflation port 21 is arranged at the free end of the upper shell 23, and a cavity is formed inside after the upper shell 23 is connected to the rear end cover 25. A plurality of air inlet interfaces 27 are arranged on the rear end cover 25, and the air inlet interfaces 27 are used to connect to the hose 31.

[0042] like Figure 4 and Figure 5 As shown, a sealing plate 24 is coaxially arranged between the upper shell 23 and the rear end cover 25, and a plurality of air inlet holes 28 are arranged on the sealing plate 24. A valve plate 26 is arranged on the side of the sealing plate 24 close to the upper shell 23, and the valve plate 26 is used to seal the plurality of air inlet holes 28. The center of the valve plate 26 is fixedly connected to the center of the sealing plate 24. The valve plate is a rubber plate, and the airflow can blow the surrounding side of the valve plate open through the air inlet holes 28. In the low-pressure inflation state when the electric diaphragm pump is closed, the valve plate 26 covers the air inlet holes 28 and is in a closed state. The airflow is transported to the inflation port 21 through the first air channel 12, the second air channel and the third air channel 22 for low-pressure inflation.

[0043] In the high-pressure inflation state when the electric diaphragm pump is turned on, after the surrounding side of the valve plate 26 is blown open by the high-pressure airflow, the airflow enters the third flow channel in the upper shell 23 through the air inlet hole 28, and then performs high-pressure inflation through the inflation port 21. The setting of the valve plate 26 can achieve high-pressure inflation while preventing gas backflow.

[0044] In one practicable manner, if Figure 4 and Figure 5 As shown, the upper shell 23, the sealing plate 24 and the rear end cover 25 are all fixedly connected by flanges.

[0045] In one practicable manner, if Figure 5 As shown, the number of the air inlet ports 27 is the same as the number of the electric diaphragm pumps.

[0046] In an practicable manner, the air inlet port 27 is a hole column extending toward one side of the electric diaphragm pump, and the hole column is used to connect with the hose 31 .

[0047] When the electric diaphragm pump is working, the gas enters the rear end cover 25 through the air inlet, air outlet, hose 31, air inlet interface 27, and air inlet hole 28 of the electric diaphragm pump in sequence. The high-pressure gas blows open the valve plate 26 on the sealing plate 24 to enter the third air channel 22, and flows into the interior of the inflatable object from the inflation port 21 to realize high-pressure inflation.

[0048] In one practicable manner, if Figure 1 , Figure 3 and Figure 6 As shown, it also includes a power supply unit, a power supply compartment 4 is arranged in the shell 5, and the power supply unit is arranged in the power supply compartment 4.

[0049] It should be noted that the power supply compartment 4 is arranged on a side of the electric diaphragm pump away from the air suction part and the air filling part to prevent the heat dissipation of the power supply from affecting the normal operation of the movement.

[0050] In one practicable manner, if Figure 1 As shown, the side opening of the power supply compartment 4 is connected to the outside through the opening, and a compartment cover 41 is provided at the opening. Through the provision of the compartment cover 41, the power supply in the power supply compartment 4 can be replaced, charged or repaired.

[0051] In an operative manner, a power connection seat 44 is provided in the power supply compartment 4, and the power connection seat 44 includes one or more electrode plugs 45. One or more groups of electrode springs are provided at corresponding positions on the detachable battery 42, and a power connection area is formed between each group of electrode springs. The shape of the detachable battery 42 matches the power supply compartment 4. When the detachable battery 42 is inserted into the power supply compartment 4 and slides to the bottom of the power supply compartment 4, the electrode plug 45 is inserted into the power connection area and is clamped and fixed by the electrode springs under the action of elastic force, and the power supply of the air pump is turned on.

[0052] In one practicable manner, if Figure 1 As shown, a plurality of supporting ribs 57 are provided on the inner wall of the power supply compartment 4, and the plurality of supporting ribs 57 are arranged perpendicular to the inner wall of the power supply compartment 4. The removable battery 42 is placed on the supporting ribs 57, which reduces the contact area of ​​the removable battery 42 and facilitates the heat dissipation of the removable battery 42.

[0053] In an practicable manner, a hinge seat is provided on one side of the bin cover 41 , the bin cover 41 is rotatably connected to the housing 5 via the hinge seat, and a side of the bin cover 41 opposite to the hinge seat is buckled with the housing 5 .

[0054] In this embodiment, a plurality of first magnetic attraction parts are arranged on the side of the compartment cover 41 opposite to the hinge seat, and the first magnetic attraction part may be a cylindrical iron block or a magnet block. A lock hole 43 is arranged at the corresponding position of the outer shell 5, and a second magnetic attraction part is arranged in the lock hole 43. After the compartment cover 41 is closed, the first magnetic attraction part is inserted into the lock hole 43 and is magnetically connected to the second magnetic attraction part.

[0055] A handle is provided on a side of the compartment cover 41 opposite to the hinge seat. The handle extends outward and is used to assist in opening the compartment cover 41 to facilitate replacement of the power supply in the power supply compartment 4 .

[0056] In an operative manner, each electric diaphragm pump includes an air inlet and an air outlet, wherein the air inlet is used to suck air in the housing 5 into the electric diaphragm pump, and the air outlet is connected to the inflatable part 2 via a hose 31. Through the joint action of multiple electric diaphragm pumps, a high-pressure airflow is introduced into the inflatable part 2.

[0057] It should be noted that if Figure 4 and Figure 5 As shown, the inflation portion 2 is provided with air inlet interfaces 27 corresponding to the number of the electric diaphragm pumps, and each air inlet interface 27 is connected to a hose 31 respectively.

[0058] In one practicable manner, if Figure 1As shown, the housing 5 includes a top cover 51 and a bottom cover 52 that are fixedly connected. When the top cover 51 and the bottom cover 52 are buckled together, a receiving cavity is formed inside, and the receiving cavity is used to place the movement.

[0059] In one practicable manner, if Figure 1 As shown, two through holes 55 are provided at one end of the bottom cover 52 , and the inflation port 21 and the air inlet 11 extend to the outside of the housing 5 through the two through holes 55 , respectively.

[0060] In one practicable manner, if Figure 1 As shown, a core bracket 56 is provided on the opposite surfaces of the top cover 51 and the bottom cover 52. After the top cover 51 and the bottom cover 52 are fixedly connected, the core bracket 56 is clamped on the outside of the air intake part 1 and the air charging part 2 to fix the air intake part 1 and the air charging part 2 to avoid failure caused by shaking during transportation or use. The core bracket 56 keeps the air intake part 1 and the air charging part 2 in the accommodating cavity without directly contacting the inner side walls of the top cover 51 and the bottom cover 52, and also provides more air intake space for the electric diaphragm pump to work, and is also conducive to heat dissipation, thereby providing an efficient and stable inflation state.

[0061] In one practicable manner, if Figure 1 and Figure 3 As shown, a control unit is provided on the cover 51, and the control unit includes a display screen 73, a button 72 and a control circuit board 74. The control circuit board 74 is provided on the inner side of the cover 51, and the control circuit board 74 is connected in communication with the movement to control the opening and closing of different components in the movement. The control circuit board 74 is also connected in communication with the power supply unit to control the opening and closing of the power supply. The power supply unit is electrically connected to the movement.

[0062] In one feasible manner, an air pressure sensor 71 is provided on the inflation portion 2 near the inflation port 21 , and the air pressure sensor 71 is communicatively connected to a control circuit board 74 . The air pressure sensor 71 is used to detect the air pressure in the third air passage 22 and transmit the air pressure value to the control circuit board 74 .

[0063] In one practicable manner, if Figures 1 to 3 As shown, the housing 5 is provided with a plurality of vents 53, through which the interior of the housing 5 is connected to the outside air. The vents 53 are provided on the peripheral side wall of the housing 5 to make the high and low pressure pumps more efficient during operation and also facilitate heat dissipation.

[0064] In one practicable manner, a filter 54 is provided on the inner wall of the housing 5, and the filter 54 is provided at the vent hole 53 to prevent foreign matter from entering the accommodating cavity through the vent hole 53 when the air pump is working, thereby affecting the working efficiency.

[0065] It should be noted that the filter element 54 includes but is not limited to filter cotton, and the filter cotton can also play a sound insulation effect, thereby further reducing the noise during the operation of the device.

[0066] It should also be noted that one or more cooling fans 13 are provided on the inner wall of the housing 5 to dissipate heat for the high and low pressure pumps.

[0067] This application, when used, includes the following:

[0068] When inflating, the present application connects the inflation port 21 to the inflatable object, inserts the detachable battery 42 into the power compartment 4, plugs the electrode plug 45 into the power connection area of ​​the electrode spring, and then connects the power supply. The motor is turned on by the button 72 to drive the fan blade to rotate, and the external airflow is sucked into the first air passage 12 through the air inlet 11. The airflow enters the third air passage 22 in the inflatable part 2 through the first air passage 12 and the second air passage in turn, and enters the inner cavity of the inflatable object from the inflation port 21 of the inflatable part 2, completing low-pressure inflation.

[0069] When the air pressure value detected by the air pressure sensor 71 on the side close to the inflation port 21 reaches a first preset air pressure value, the fan blades are closed and multiple groups of electric diaphragm pumps are started at the same time. The external airflow enters the outer casing 5 through the vent 53, is sucked in through the air inlet of the electric diaphragm pump, and is output through the air outlet of the electric diaphragm pump. It enters the rear end cover 25 through the hose 31. The collected high-pressure airflow blows open the valve plate 26 of the sealing plate 24 and enters the third air passage 22. It enters the interior of the inflatable object through the inflation port 21 for high-pressure inflation. After reaching the second preset air pressure value, the electric diaphragm pump stops, and the high-pressure inflation is completed.

[0070] When deflation is performed, the air inlet 11 is connected to the inflatable object, the detachable battery 42 is inserted into the power supply compartment 4, the electrode plug 45 is plugged into the power supply area of ​​the electrode spring, and then the power supply is connected. The button 72 is used to control the motor to drive the fan blade to rotate, and the airflow in the inner cavity of the inflatable object is sucked out through the air inlet 11, and then passes through the first air channel 12, the second air channel, and the third air channel 22 in sequence, and then discharged from the inflation port 21 to the outside.

[0071] It should be noted that when the present application is not in use, the detachable battery 42 can also be taken out and used as a mobile power source to charge items that need to be charged, etc.

[0072] In summary, the present application connects the air intake part 1 and the air charging part 2 by setting a plurality of electric diaphragm pumps, and the airflow generated by the simultaneous operation of the plurality of electric diaphragm pumps can not only meet the high pressure demand, but also reduce the noise during high pressure inflation, thereby improving the user experience. Through the setting of a plurality of electric diaphragm pumps, when one or more of the electric diaphragm pumps are damaged, the remaining electric diaphragm pumps can still maintain normal operation without affecting the use of the high and low pressure air pumps. By setting a hose 31 between the electric diaphragm pump and the air charging part housing, the layout space of the movement can be saved to reduce the volume of the high and low pressure air pumps, which is convenient for carrying and using. By setting a valve plate 26 on the sealing plate 24, the present application can meet the needs of various working conditions such as low pressure inflation, high pressure inflation and exhaust. Through the setting of the power supply unit, the power supply can be removed as needed for replacement, maintenance or charging. The high and low pressure air pumps provided in the present application have the characteristics of simple structure and easy to carry, which is conducive to popularization and use.

[0073] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A high and low pressure air pump, characterized in that: The invention comprises a housing, a movement and a power supply unit arranged inside the housing, wherein the movement comprises an air intake unit and an air charging unit, wherein the air charging unit comprises an air charging unit housing and an electric diaphragm pump assembly; the electric diaphragm pump assembly comprises a plurality of electric diaphragm pumps, and the plurality of electric diaphragm pumps are used for performing multi-stage air charging into the air charging unit housing; the air intake unit and the air charging unit housing are both arranged on the same side of the electric diaphragm pump assembly, and the power supply unit is arranged on the other side of the electric diaphragm pump assembly; The air intake portion includes an air intake port and a first air passage, wherein the first air passage is arranged inside the air intake portion along the axial direction of the air intake portion, the air intake port is communicated with one end of the first air passage, and the air intake portion further includes a fan blade and a motor for driving the fan blade to rotate; The inflation portion shell includes an inflation port and a third air channel. The third air channel is disposed inside the inflation portion shell and arranged along the axial direction of the inflation portion shell. The inflation port is connected to the third air channel. The electric diaphragm pump is connected to the third air channel through a hose. The first air channel and the third air channel are connected through a second air channel.

2. The high and low pressure air pump according to claim 1, characterized in that: A connecting portion is provided between the air inhalation portion and the air charging portion, the second air channel is provided in the connecting portion, the second air channel is a one-way air channel, and the second air channel is used to transport the gas in the first air channel to the third air channel.

3. The high and low pressure air pump according to claim 2, characterized in that: A sealing plate is provided in the middle of the inflation part, and the sealing plate is arranged perpendicular to the axis of the inflation part. A plurality of air inlet holes are provided on the sealing plate. A valve plate is provided on the side of the sealing plate close to the inflation port, and the valve plate is used to seal the plurality of air inlet holes. The center of the valve plate is fixedly connected to the center of the sealing plate, and the airflow can blow open the surrounding side of the valve plate through the air inlet holes.

4. The high and low pressure air pump according to claim 1, characterized in that: A power supply compartment is arranged in the shell, and the power supply compartment is used for placing the power supply unit.

5. The high and low pressure air pump according to claim 4, characterized in that: The side opening of the power supply compartment has a compartment cover at the opening, a hinge seat is arranged on one side of the compartment cover, the compartment cover is rotatably connected to the shell through the hinge seat, and a side of the compartment cover opposite to the hinge seat is buckled with the shell.

6. The high and low pressure air pump according to claim 5, characterized in that: A plurality of first magnetic attraction parts are arranged on the side of the compartment cover opposite to the hinge seat, the first magnetic attraction part is a cylindrical iron block or a magnet block, a lock hole is arranged at the corresponding position of the shell, and a second magnetic attraction part is arranged in the lock hole; when the compartment cover is closed, the first magnetic attraction part is inserted into the lock hole and connected to the second magnetic attraction part.

7. The high and low pressure air pump according to claim 4, characterized in that: A power connection socket is arranged in the power supply compartment, and the power connection socket includes one or more electrode plugs. One or more groups of electrode springs are arranged at corresponding positions on the power supply unit, and a power connection area is formed between each group of electrode springs.

8. The high and low pressure air pump according to claim 4, characterized in that: A plurality of supporting ribs are provided on the inner wall of the power supply compartment, and the plurality of supporting ribs are arranged perpendicular to the inner wall of the power supply compartment.

9. The high and low pressure air pump according to claim 1, characterized in that: The shell includes a surface cover and a bottom cover that are fixedly connected, and a receiving cavity is formed inside the surface cover and the bottom cover when the surface cover and the bottom cover are buckled together; movement brackets are provided on the opposite surfaces of the surface cover and the bottom cover, and after the surface cover and the bottom cover are fixedly connected, the movement bracket is clamped on the outside of the air intake part and the inflation part.

10. The high and low pressure air pump according to claim 9, characterized in that: A control unit is arranged on the cover, and the control unit includes a display screen, buttons and a control circuit board. The control circuit board is arranged on the inner side of the cover, and the control circuit board is respectively connected to the movement and the power supply unit for communication.

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