Ventilation Structure of Electric Air Pump

Abstract

The present application discloses a ventilation structure of an electric air pump. The ventilation structure of the electric air pump of the present application includes a shell, a cover plate, an inflation component, a main control circuit board, a reversing plate, a linkage mechanism, a micro switch, an inflation button and a deflation button. The shell is provided with a first opening; the cover plate is provided with a second opening, a first hole and a second hole; the main control circuit board is electrically connected to the inflation motor, the inflation button is provided in the first hole, and is connected to the main control circuit board; the deflation button is provided in the second hole, and the linkage mechanism connects the deflation button to the reversing plate in a transmission manner; the micro switch is provided on the linkage mechanism, and is connected to the main control circuit board; a vent is provided on the reversing plate, and the inflation component has an air outlet and an air inlet; when the reversing plate moves to the first preset position, the vent is docked with the air outlet; when the reversing plate moves to the second preset position, the vent is docked with the air inlet. Therefore, the present application can switch the airway inside the electric air pump, which can be used for both inflation and deflation.

Description

Technical Field

[0001] The present application relates to the technical field of air pumps, and in particular to a ventilation structure of an electric air pump. Background Art

[0002] Inflatable products such as air mattresses or air beds are becoming more and more popular due to their small size, easy to carry and store, and are very suitable for camping and as spare mattresses for guests at home for short-term use. Inflatable products have at least one inflatable air cavity, which needs to be inflated and deflated during use.

[0003] In the prior art, inflation is generally performed by a hand-operated air pump, an electric air pump, or an internal air pump, while deflation is generally performed naturally, which takes a long time and is inconvenient. Summary of the invention

[0004] The purpose of the present application is to provide a ventilation structure for an electric air pump, which can switch the airway inside the electric air pump and can be used for both inflation and deflation.

[0005] The embodiment of the present application is implemented as follows:

[0006] A ventilation structure of an electric air pump comprises a shell, a cover plate, an air-filling assembly, a main control circuit board, a reversing plate, a linkage mechanism, a micro switch, an air-filling button and an air-deflation button. The shell is provided with a first opening; the cover plate is provided on the shell, and the cover plate is provided with a second opening, a first hole and a second hole; the inflation component is provided in the shell and is used for compressing air; the main control circuit board is provided in the shell and is electrically connected to the inflation component, the inflation button is provided in the first hole and is connected to the main control circuit board for controlling the start of the inflation motor; the deflation button is provided in the second hole, and the linkage mechanism is provided in the shell to transmission-connect the deflation button with the reversing plate; the micro switch is provided on the linkage mechanism and is connected to the main control circuit board; a vent is provided on the reversing plate, and the inflation component has an air outlet and an air inlet; when the reversing plate moves to the first preset position, the vent is docked with the air outlet; when the reversing plate moves to the second preset position, the vent is docked with the air inlet.

[0007] In one embodiment, a key plate is provided on the main control circuit board, and the inflatable key is connected to the main control circuit board through the key plate.

[0008] In one embodiment, the linkage mechanism includes an integrated plate, a cam, a strut and a deflation spring, wherein the integrated plate is fixed on the shell; the cam has a connecting portion and a movable end portion, the connecting portion is provided with a rotating shaft, and is rotatably arranged on the integrated plate through the rotating shaft, and a sliding groove is provided on the cam; one end of the strut is connected to the deflation button, and the other end is passed through the sliding groove for controlling the rotation of the cam; one end of the deflation spring is connected to the reversing plate, and the other end is connected to the inner bottom of the shell; wherein the reversing plate has a connecting surface that abuts against the movable end portion, and the reversing plate can move under the drive of the movable end portion.

[0009] In one embodiment, the linkage mechanism also includes an undercut, a solenoid valve fixing member and a solenoid valve, the undercut is arranged on the integrated board, a first protrusion is arranged on the support rod, and the undercut is used to engage with the first protrusion to limit the movement of the support rod; the solenoid valve fixing member is arranged on the integrated board, the solenoid valve is arranged on the solenoid valve fixing member, and is connected to the main control circuit board, and is used to push the undercut to control the engaging relationship between the undercut and the first protrusion.

[0010] In one embodiment, a micro switch fixing piece is disposed on the support rod, and the micro switch is disposed on the micro switch fixing piece.

[0011] In one embodiment, the connecting surface is in an upwardly convex arc shape.

[0012] In one embodiment, the connection surface and the main board form a limiting step, and the limiting step is used to limit the movement of the cam along the rotating shaft.

[0013] In one embodiment, the reversing plate includes a main board, a T-shaped rod, a frame, a positioning plate, and a spring mounting groove, wherein the vent is provided on the main board; the T-shaped rod is provided on the main board, and the connecting surface is provided on the T-shaped rod; the frame is provided at the vent of the main board and is connected to the T-shaped rod; the positioning plate is provided on the frame, and the spring mounting groove is provided at the bottom of the frame for accommodating the air release spring.

[0014] In one embodiment, the inflation component includes a fan blade, a fan blade cover, an air sealing plate, a motor cover and an inflation motor, the air outlet and the air inlet are arranged on the fan blade cover; the fan blade is arranged in the fan blade cover; the air sealing plate is arranged at the bottom of the fan blade cover; the motor cover is arranged at the top of the fan blade cover; the inflation motor is arranged on the motor cover, and is transmission-connected to the fan blade, and the inflation motor is electrically connected to the main control circuit board.

[0015] In one embodiment, a partition bar is disposed in the first opening, a connecting through hole is disposed on the partition bar, and a valve assembly is disposed in the connecting through hole.

[0016] In one embodiment, the valve assembly includes a column core, a valve plate, and a valve spring, wherein the column core is inserted into the connecting through hole, one end of the column core is connected to a fixing plate, and the other end is sleeved with a glass ball; the valve plate is connected to the column core; the valve spring is sleeved on the column core and arranged between the glass ball and the fixing plate; wherein the reversing plate is provided with a ramp rod located in the vent hole, the column core passes through the connecting through hole and abuts against the ramp rod; when the reversing plate moves, the column core moves on the surface of the ramp rod, causing the valve plate to close or open the first opening.

[0017] In one embodiment, an air pressure sensor is disposed on the main control circuit board.

[0018] In one embodiment, a protective net is provided on the shell and located at the first opening; and an air guide strip is provided on the cover plate and located at the second opening.

[0019] The beneficial effects of this application compared with the prior art are:

[0020] The present application connects the deflation button to the reversing plate through a linkage mechanism. When the deflation button is pressed, the reversing plate moves a certain distance, changing the docking relationship between the reversing plate and the inflation component, so that the internal airway of the electric air pump is switched, so that the present application can be used for both inflation and deflation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a ventilation structure of an electric air pump according to an embodiment of the present application.

[0023] Figure 2 An exploded view of the ventilation structure of an electric air pump according to an embodiment of the present application.

[0024] Figure 3 An exploded view of the ventilation structure of an electric air pump according to an embodiment of the present application.

[0025] Figure 4 A cross-sectional view of a partial structure of a ventilation structure of an electric air pump shown in one embodiment of the present application.

[0026] Figure 5 A partial structural schematic diagram of a ventilation structure of an electric air pump shown in an embodiment of the present application.

[0027] Figure 6 A partial structural schematic diagram of a ventilation structure of an electric air pump shown in an embodiment of the present application.

[0028] Figure 7 A partial structural schematic diagram of a ventilation structure of an electric air pump shown in an embodiment of the present application.

[0029] Figure 8 A partial structural schematic diagram of a ventilation structure of an electric air pump shown in an embodiment of the present application.

[0030] Figure 9 A partial structural exploded view of a ventilation structure of an electric air pump according to an embodiment of the present application.

[0031] Icons: 1- ventilation structure of electric air pump; 100- housing; 110- first opening; 120- protective net; 130- spacer; 140- connecting hole; 150- valve assembly; 151- column core; 151a- slot; 152- fixing plate; 153- glass bead; 154- valve plate; 155- valve spring; 200- cover plate; 210- second opening; 211- wind guide strip; 220- One hole; 230-second hole; 300-inflatable assembly; 310-fan blade; 320-fan blade cover; 330-air sealing plate; 340-motor cover; 350-inflatable motor; 360-air outlet; 370-air inlet; 400-main control circuit board; 410-air pressure sensor; 420-power cord; 421-wire box; 422-power board; 423-power board protective cover; 430-press Keyboard; 440-USB interface; 450-LED light; 500-linkage mechanism; 510-reversing plate; 511-connecting surface; 512-vent; 513-slope rod; 514-limiting step; 515-T-shaped rod; 516-main board; 517-frame; 518-positioning plate; 519-spring installation groove; 520-integrated board; 530-support rod; 531-first protrusion; 5 32-second protrusion; 533-third protrusion; 540-micro switch fixing piece; 541-strip groove; 550-deflation spring; 560-cam; 561-connecting part; 562-movable end; 563-rotating shaft; 564-sliding groove; 570-undercut; 580-solenoid valve; 581-solenoid valve fixing piece; 600-micro switch; 700-inflation button; 800-deflation button. DETAILED DESCRIPTION

[0032] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0033] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", "left", "right", "up", "down", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application 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 a limitation to the present application.

[0035] In the description of the present application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components.

[0036] The technical solution of the present application will be clearly and completely described below with reference to the drawings.

[0037] Please refer to Figure 1 , which is a schematic structural diagram of the air exchange structure 1 of an electric air pump shown in an embodiment of the present application. The air exchange structure 1 of the electric air pump includes a housing 100, an inflation button 700, a deflation button 800, and a cover plate 200. The cover plate 200 is covered on the top of the housing 100 by means of snap connection, bolt connection, etc. A first opening 110 is provided on the side wall of the housing 100, and a protective net 120 is provided on the housing 100 at the position of the first opening 110; a second opening 210 is provided on the cover plate 200, and a wind guide strip 211 is provided on the cover plate 200 at the position of the second opening 210. The wind guide strip 211 divides the second opening 210 into a plurality of strip-shaped air vents.

[0038] Among them, the air exchange structure 1 of the electric air pump can be applied to an electric air pump for inflating and deflating inflatable products such as inflatable mattresses or inflatable beds.

[0039] When the electric air pump is in the initial state, the first opening 110 serves as the air outlet of the electric air pump, and the second opening 210 serves as the air inlet of the electric air pump. At this time, the electric air pump can be used for inflation. When the air duct in the electric air pump is switched, the first opening 110 serves as the air inlet of the electric air pump, and the second opening 210 serves as the air outlet of the electric air pump. At this time, the electric air pump can be used for deflation.

[0040] The cover plate 200 is provided with two adjacent first holes 220 and second holes 230, the inflation button 700 is provided in the first hole 220, and the deflation button 800 is provided in the second hole 230. When the inflation button 700 is pressed, the electric air pump inflates, and when the deflation button 800 is pressed, the electric air pump deflates.

[0041] Please refer to Figure 2 , which is an exploded view of the ventilation structure 1 of the electric air pump shown in an embodiment of the present application. The ventilation structure 1 of the electric air pump includes an inflation component 300, a main control circuit board 400, a reversing plate 510, a linkage mechanism 500 and a micro switch 600. The inflation component 300 includes an inflation motor 350, the main control circuit board 400 is arranged in the housing 100, and is electrically connected to the inflation motor 350; a key board 430 is provided on the main control circuit board 400, and an inflation button 700 is connected to the main control circuit board 400 through the key board 430, and is used to control the start or shut down of the inflation motor 350.

[0042] The linkage mechanism 500 is arranged in the shell 100, and the deflation button 800 is connected to the reversing plate 510 by transmission, so as to drive the reversing plate 510 to move along with the movement of the deflation button 800, so that when the deflation button 800 is pressed, the reversing plate 510 moves a certain distance under the drive of the linkage mechanism 500, thereby changing the docking relationship between the reversing plate 510 and the inflation component 300, so that the internal airway of the electric air pump is switched, so that the present application can be used for both inflation and deflation.

[0043] The micro switch 600 is connected to a micro switch fixing member 540, and the micro switch 600 is arranged on the linkage mechanism 500 through the micro switch fixing member 540, and is connected to the main control circuit board 400. The micro switch 600 can detect the movement of the deflation button 800, so that the main control circuit board 400 can control the opening or closing of the inflation motor 350.

[0044] The main control circuit board 400 is provided with an air pressure sensor 410. The air pressure sensor 410 can be connected to an inflatable product such as an air bed or an inflatable mattress through a soft air pipe to detect the internal air pressure of the inflatable product such as an inflatable bed or an inflatable mattress. Among them, electrical components such as a processor and a controller can be set on the main control circuit board 400.

[0045] In this embodiment, the internal air pressure of an inflatable product such as an air bed or an air mattress can be detected by a pressure sensor 410, and then the inflation motor 350 can be controlled to operate through the main control circuit board 400, so that when the internal air pressure of the inflatable product is too low, the inflation button 700 can be manually triggered, and then the inflation component 300 can be controlled to operate through the main control circuit board 400 for inflation operation; when the internal air pressure of the inflatable product is too high, the deflation button 800 can be manually triggered to switch the air passage, and then the inflation component 300 can be controlled to operate through the main control circuit board 400 for deflation operation; or when the internal air pressure of the inflatable product reaches a preset value, the inflation motor 350 can be stopped by the main control circuit board 400 to stop the inflation operation or deflation operation of the electric air pump.

[0046] A power cord 420 is connected to the main control circuit board 400. The power cord 420 passes through the cover plate 200 and is connected to an external power supply for power supply. The air exchange structure 1 of the electric air pump further includes a wire box 421. One side of the cover plate 200 is hinged with the wire box 421. The wire box 421 is connected to the housing 100 by a snap connection. The wire box 421 can be opened and closed, and the power cord 420 can be stored in the box.

[0047] Please refer to Figure 3 , which is an exploded view of the air exchange structure 1 of the electric air pump shown in an embodiment of the present application. The air exchange structure 1 of the electric air pump further includes a power board 422 connected to the main control circuit board 400 and a power board protective cover 423 arranged outside the power board 422. The power board 422 is fixedly connected to the cover plate 200. At the same time, the power board 422 is connected to the power cord 420, and the power cord 420 is fixed to the cover plate 200 through the power board 422. During an operation process, the power board 422 is connected to the inflation motor 350. When the power cord 420 is connected to the power supply, the power board 422 can send a signal, and the main control circuit board 400 controls the inflation motor 350 to start running.

[0048] Please refer to Figure 4 , which is a cross-sectional view of a partial structure of the air exchange structure 1 of the electric air pump shown in an embodiment of the present application. The inflation component 300 is arranged in the housing 100 and is used for compressing air. The inflation component 300 includes a wind leaf 310, a wind leaf cover 320, an air sealing plate 330, a motor cover 340 and an inflation motor 350. The wind leaf 310 is arranged in the wind leaf cover 320; the air sealing plate 330 is arranged at the bottom of the wind leaf cover 320; the motor cover 340 is connected to the top of the wind leaf cover 320 by bolts; the inflation motor 350 is connected to the motor cover 340 by bolts. The main shaft of the inflation motor 350 is in transmission connection with the wind leaf 310, and the inflation motor 350 is electrically connected to the main control circuit board 400.

[0049] The air outlet hole 360 and the air inlet hole 370 are provided on the blower housing 320, and the air outlet hole 360 and the air inlet hole 370 are arranged at an interval in the vertical direction. The air inlet hole 370 is located below, and the air outlet hole 360 is located above.

[0050] The air vent hole 512 is provided on the reversing plate 510, and the inflating assembly 300 has an air outlet hole 360 and an air inlet hole 370; when the reversing plate 510 moves to the first preset position, the air vent hole 512 is docked with the air outlet hole 360; when the reversing plate 510 moves to the second preset position, the air vent hole 512 is docked with the air inlet hole 370. In this embodiment, the movement of the reversing plate 510 from the first preset position to the second preset position is a vertically downward movement.

[0051] That is, when the reversing plate 510 moves to the first preset position, the air vent hole 512 is docked with the air outlet hole 360. At this time, the air duct in the electric air pump is the air inflating duct, the first opening 110 is the air outlet of the electric air pump, and the second opening 210 is the air inlet of the electric air pump. When the inflating assembly 300 works, the air flow sequentially passes through the second opening 210, the air inlet hole 370, the air outlet hole 360, the air vent hole 512 and the first opening 110.

[0052] When the reversing plate 510 moves to the second preset position under the action of the linkage mechanism 500, the air vent hole 512 is docked with the air inlet hole 370, then the air duct in the electric air pump is switched, the first opening 110 is changed to the air inlet of the electric air pump, and the second opening 210 is changed to the air outlet of the electric air pump. At this time, the air duct in the electric air pump is the air deflating duct. When the inflating assembly 300 works, the air flow sequentially passes through the first opening 110, the air vent hole 512, the air inlet hole 370, the air outlet hole 360 and the second opening 210.

[0053] During an operation process, when the deflating button 800 is pressed, the reversing plate 510 moves to the second preset position, the air duct in the electric air pump is switched to the air deflating duct, and the inflating motor 350 is started under the action of the micro switch 600, and the electric air pump deflates. When the deflating button 800 is reset, the reversing plate 510 moves to the first preset position, the air duct in the electric air pump is switched to the air inflating duct, and the inflating motor 350 waits for an inflating instruction (inflating button 700).

[0054] Please refer to Figure 5 , which is a partial structural schematic diagram of the air exchange structure 1 of the electric air pump shown in an embodiment of the present application. The linkage mechanism 500 includes an integrated board 520, a cam 560, a support rod 530 and a deflating spring 550. The integrated board 520 is fixed to the housing 100 by bolts. The integrated board 520 can be a bent board, and a step matching the integrated board 520 can be provided in the housing 100 to make the integrated board 520 fixed more firmly.

[0055] One end of the cam 560 is a connecting portion 561, and the other end is a movable end portion 562. A sliding groove 564 is provided in the middle of the cam 560. A rotating shaft 563 made of stainless steel, plastic or other materials is provided on the connecting portion 561. The cam 560 is rotatably arranged on the integrated board 520 through the rotating shaft 563. The movable end portion 562 can abut against the top of the reversing plate 510, so that the reversing plate 510 can reciprocate (switch between the first preset position and the second preset position) under the drive of the movable end portion 562. Among them, the surface where the top of the reversing plate 510 abuts against the movable end portion 562 is called the connecting surface 511. In this embodiment, the connecting surface 511 is a convex arc.

[0056] One end of the support rod 530 is connected to the air release button 800, and a second protrusion 532 is provided at the other end. The second protrusion 532 is arranged in the sliding groove 564. When the support rod 530 moves downward, under the action of the protrusion and the sliding groove 564, the cam 560 rotates downward. When the support rod 530 moves upward, under the action of the protrusion and the sliding groove 564, the cam 560 rotates upward.

[0057] In the initial state, the air exchange structure 1 of the electric air pump is an inflation air passage, and the reversing plate 510 is in the first preset position. When the air release button 800 is pressed, the support rod 530 moves downward by a certain distance, and the cam 560 rotates by a certain angle, so that the reversing plate 510 moves downward by a certain distance to reach the second preset position, and the air exchange structure 1 of the electric air pump is switched to the air release air passage.

[0058] One end of the air release spring 550 is connected to the reversing plate 510, and the other end is connected to the inner bottom of the housing 100; it is used to buffer vibration.

[0059] The reversing plate 510 includes a main board 516, a T-shaped rod 515, a frame 517, a clamping plate 518, and a spring installation groove 519. The ventilation hole 512 is provided on the main board 516; the T-shaped rod 515 is arranged on the main board 516, and the connecting surface 511 is arranged on the T-shaped rod 515; the frame 517 is arranged at the ventilation hole 512 of the main board 516 and is connected to the T-shaped rod 515; the clamping plate 518 is arranged on the frame 517, and the spring installation groove 519 is arranged at the bottom of the frame 517 for installing the air release spring 550.

[0060] Among them, the top height of the main board 516 is higher than the highest height of the connecting surface 511, so that the main board 516 has a limiting step 514 exceeding the connecting surface 511, thereby restricting the movement of the cam 560 along the direction of the rotating shaft 563.

[0061] Please refer to Figure 6, which is a partial schematic structural diagram of the air exchange structure 1 of the electric air pump shown in an embodiment of the present application. The linkage mechanism 500 further includes an inverted buckle 570, a solenoid valve fixing member 581, and a solenoid valve 580. The inverted buckle 570 is provided on the integrated board 520. A first protrusion 531 is provided on the support rod 530. The inverted buckle 570 is used to engage with the first protrusion 531 to limit the movement of the support rod 530. The solenoid valve fixing member 581 is provided on the integrated board 520. The solenoid valve 580 is provided on the solenoid valve fixing member 581 and is connected to the main control circuit board 400, and is used to push the inverted buckle 570 to control the engagement relationship between the inverted buckle 570 and the first protrusion 531.

[0062] During an operation process, when the air release button 800 is pressed, the reversing plate 510 moves to the second preset position, and the air exchange structure 1 of the electric air pump switches to the air release air passage. At the same time, the support rod 530 moves downward, and the inverted buckle 570 engages with the first protrusion 531 of the support rod 530, making the air release button 800 unable to reset immediately. At this time, the air release button 800 is trapped in the second hole 230. It is not until the air pressure sensor 410 detects that the internal air pressure of the inflated product reaches the preset value that the main control circuit board 400 then makes the solenoid valve 580 push the inverted buckle 570, causing the inverted buckle 570 to disengage from the support rod 530, enabling the air release button 800 to reset, the reversing plate 510 to return to the first preset position, and the air exchange structure 1 of the electric air pump to return to the inflation air passage.

[0063] During an operation process, when the air release button 800 is pressed, the reversing plate 510 moves to the second preset position, and the air exchange structure 1 of the electric air pump switches to the air release air passage. At the same time, the support rod 530 moves downward, and the inverted buckle 570 engages with the first protrusion 531 of the support rod 530, making the air release button 800 unable to reset immediately. At this time, the air release button 800 is trapped in the second hole 230. When it is necessary to stop the air release, manually press the air release button 800. The micro switch 600 detects the movement of the air release button 800, transmits a signal, and then the main control circuit board 400 makes the solenoid valve 580 push the inverted buckle 570, causing the inverted buckle 570 to disengage from the support rod 530, enabling the air release button 800 to reset, the reversing plate 510 to return to the first preset position, and the air exchange structure 1 of the electric air pump to return to the inflation air passage.

[0064] Please refer to Figure 7 , which is a partial schematic structural diagram of the air exchange structure 1 of the electric air pump shown in an embodiment of the present application. A micro switch fixing member 540 is provided on the support rod 530. The micro switch 600 is provided on the micro switch fixing member 540 by means of snap connection, pin connection, bolt connection, etc.

[0065] A strip-shaped groove 541 is provided on the micro switch fixing member 540. A third protrusion 533 matching the strip-shaped groove 541 is provided on the support rod 530. The micro switch 600 is connected to the support rod 530 through the strip-shaped groove 541 and the third protrusion 533.

[0066] Please refer to Figure 8 , which is a partial schematic structural view of the air exchange structure 1 of the electric air pump shown in an embodiment of the present application. A USB interface 440 and an LED lamp 450 may be provided on the main control circuit board 400.

[0067] Please refer to Figure 9 , which is a partial exploded view of the air exchange structure 1 of the electric air pump shown in an embodiment of the present application. A partition strip 130 is provided in the first opening 110, a connection through hole 140 is provided on the partition strip 130, and a valve assembly 150 is provided in the connection through hole 140.

[0068] The valve assembly 150 includes a column core 151, a valve piece 154, and a valve spring 155. The column core 151 is inserted into the connection through hole 140. A fixing piece 152 is connected to one end of the column core 151, and a clamping groove 151a is provided at the other end. A glass bead 153 is sleeved in the clamping groove 151a; the fixing piece 152 may be a net-shaped flat plate piece, and the valve piece 154 is connected to the column core 151 and can abut against the fixing piece 152. The clamping groove 151a can limit the axial movement of the glass bead 153.

[0069] The valve spring 155 is sleeved on the column core 151 and is provided between the glass bead 153 and the fixing piece 152; wherein, a ramp rod 513 is provided in the ventilation hole 512 and on the commutation plate 510, and the column core 151 passes through the connection through hole 140 and abuts against the ramp rod 513; when the commutation plate 510 moves, the column core 151 moves on the surface of the ramp rod 513, so that the valve piece 154 closes or opens the first opening 110.

[0070] The axes of the fixing piece 152, the valve piece 154, the glass bead 153, the connection through hole 140, the column core 151 and the axis of the first opening 110 are all coaxially arranged. The surface of the ramp rod 513 has an inclined angle relative to the valve piece 154. When the column core 151 moves on the surface of the ramp rod 513, the column core 151 can move along its own axis, so as to achieve the effect of closing or opening the valve assembly 150.

[0071] The valve piece 154 may be made of a soft material such as silica gel, and the valve assembly 150 is in a normally closed state; when the air passage in the air exchange structure 1 of the electric air pump is an inflation air passage, the commutation plate 510 is in the first preset position, and the valve assembly 150 can be opened under the action of air flow, so that the inflation operation of the electric air pump runs normally; when the air passage in the air exchange structure 1 of the electric air pump is a deflation air passage, the commutation plate 510 moves downward to the second preset position, and the column core 151 moves relative to the ramp rod 513, so as to open the valve and make the electric air pump run normally.

[0072] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A ventilation structure of an electric air pump, It is characterized in that include: A housing having a first opening; A cover plate, which is disposed on the shell and has a second opening, a first hole, and a second hole; An air-filling assembly, disposed in the housing and used for compressing air, the air-filling assembly having an air outlet and an air inlet; A main control circuit board is disposed in the housing and electrically connected to the inflatable component; an inflation button, disposed in the first hole and connected to the main control circuit board; and A deflation button is disposed in the second hole; A reversing plate, wherein the reversing plate is provided with a vent hole; A linkage mechanism is disposed in the housing and drivingly connects the deflation button with the reversing plate; A micro switch, which is arranged on the linkage mechanism and connected to the main control circuit board; When the reversing plate moves to the first preset position, the vent hole is connected to the air outlet hole; when the reversing plate moves to the second preset position, the vent hole is connected to the air inlet hole; The linkage mechanism comprises an integrated plate, a cam, a support rod and a deflation spring, wherein the integrated plate is fixed to the housing; the cam has a connecting portion and a movable end portion, the connecting portion is provided with a rotating shaft, the cam is rotatably arranged on the integrated plate through the rotating shaft, and a sliding groove is provided on the cam; one end of the support rod is connected to the deflation button, and the other end is inserted into the sliding groove for controlling the rotation of the cam; one end of the deflation spring is connected to the reversing plate, and the other end is connected to the inner bottom of the housing; wherein the reversing plate has a connecting surface that abuts against the movable end portion, and the reversing plate can move under the drive of the movable end portion; the micro switch is connected to the support rod; The linkage mechanism further includes an undercut, a solenoid valve fixing member and a solenoid valve; the undercut is arranged on the integrated board, a first protrusion is arranged on the support rod, and the undercut is used to buckle with the first protrusion to limit the movement of the support rod; the solenoid valve fixing member is arranged on the integrated board; the solenoid valve is arranged on the solenoid valve fixing member and is connected to the main control circuit board, and is used to push the undercut to control the buckling relationship between the undercut and the first protrusion; When the deflation button is pressed, the reversing plate moves to the second preset position, the ventilation structure of the electric air pump switches to the deflation airway, the support rod moves downward, and the upside down engages with the first protrusion, so that the deflation button is sunk into the second hole; the main control circuit board can control the solenoid valve to push the upside down, so that the upside down is separated from the support rod, so that the deflation button is reset, the reversing plate returns to the first preset position, and the ventilation structure of the electric air pump returns to the inflation airway.

2. The ventilation structure of the electric air pump according to claim 1, It is characterized in that A micro switch fixing piece is arranged on the support rod, and the micro switch is arranged on the micro switch fixing piece.

3. The ventilation structure of the electric air pump according to claim 1, It is characterized in that The commutation plate comprises: A main board, wherein the vent hole is arranged on the main board; The T-shaped rod is arranged on the main board, and the connecting surface is arranged on the T-shaped rod, and the connecting surface is an upwardly convex arc; The frame body is arranged at the ventilation hole of the main board and is connected to the T-shaped rod; The clamping plate is arranged on the frame body; and The spring installation groove is arranged at the bottom of the frame body for installing the air release spring; Wherein, the connecting surface and the main board form a limiting step, and the limiting step is used to limit the movement of the cam along the rotating shaft.

4. The air exchange structure of the electric air pump according to claim 1, characterized in that The inflation assembly includes: The blower housing, on which the air outlet hole and the air inlet hole are arranged; The blower is arranged inside the blower housing; The air sealing plate is arranged at the bottom of the blower housing; The motor housing is arranged on the top of the blower housing; and The inflation motor is arranged on the motor housing, is in transmission connection with the blower, and the inflation motor is electrically connected to the main control circuit board.

5. The air exchange structure of the electric air pump according to claim 1, characterized in that A partition strip is arranged in the first opening, a connecting through hole is arranged on the partition strip, and a valve assembly is arranged in the connecting through hole.

6. The air exchange structure of the electric air pump according to claim 5, characterized in that The valve assembly includes: The column core is inserted into the connecting through hole, a fixing piece is connected to one end of the column core, and a glass bead is sleeved on the other end; The valve piece is connected to the column core; and The valve spring is sleeved on the column core and is arranged between the glass bead and the fixing piece; Wherein, a ramp rod is arranged on the commutation plate and located in the ventilation hole, and the column core passes through the connecting through hole and abuts against the ramp rod; When the commutation plate moves, the column core moves on the surface of the ramp rod, so that the valve piece closes or opens the first opening.

7. The air exchange structure of the electric air pump according to any one of claims 1 to 6, characterized in that A pressure sensor is arranged on the main control circuit board.

8. The air exchange structure of the electric air pump according to claim 1, characterized in that A protective net is arranged on the housing at the first opening; A wind guiding strip is arranged on the cover plate at the second opening.

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