CN111852921A

CN111852921A - Air exchange structure of electric air pump

Info

Publication number: CN111852921A
Application number: CN202010874546.5A
Authority: CN
Inventors: 秦光英; 唐晓玲
Original assignee: Manaslu Technology Shanghai Co Ltd
Current assignee: Manaslu Technology Shanghai Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-10-30

Abstract

The application discloses structure of taking a breath of electronic air pump. The utility model provides an electronic air pump's structure of taking a breath includes casing, apron, inflation assembly, main control circuit board, switching-over board, link gear, micro-gap switch, aerifys button and gassing 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 with the inflation motor, and the inflation key is arranged in the first hole and connected with the main control circuit board; the air release key is arranged in the second hole, and the linkage mechanism is used for driving and connecting the air release key and the reversing plate; the micro switch is arranged on the linkage mechanism and is connected with the main control circuit board; the reversing plate is provided with a vent hole, and the inflation assembly is provided with an air outlet hole and an air inlet hole; when the reversing plate moves to a first preset position, the vent hole is in butt joint with the air outlet hole; when the reversing plate moves to the second preset position, the vent hole is in butt joint with the air inlet hole. Therefore, the air passage can be switched inside the electric air pump, and the air pump can be used for inflation and deflation.

Description

Air exchange structure of electric air pump

Technical Field

The application relates to the technical field of air pumps, in particular to a ventilation structure of an electric air pump.

Background

Inflatable products such as inflatable mattresses or inflatable beds are very suitable for camping and serving as standby mattresses at home for short-term use by guests due to the advantages of small volume, portability, storage and the like, and are increasingly popular. The inflatable product has at least one inflatable air cavity which needs to be inflated and deflated during use.

In the prior art, the inflation is generally performed by manually inflating an air pump, electrically inflating an air pump and installing an internal air pump, and the deflation is generally performed naturally, long in time and inconvenient.

Disclosure of Invention

An object of this application is to provide a structure of taking a breath of electronic air pump, it can switch the air flue in electronic air pump is inside, both can be used for aerifing, also can be used for the gassing.

The embodiment of the application is realized as follows:

a ventilation structure of an electric air pump comprises a shell, a cover plate, an inflation assembly, a main control circuit board, a reversing plate, a linkage mechanism, a microswitch, an inflation key and an deflation key. The shell is provided with a first opening; the cover plate is covered on the shell, and a second opening, a first hole and a second hole are formed in the cover plate; the inflation assembly is arranged in the shell and used for compressing air; the main control circuit board is arranged in the shell and electrically connected with the inflation assembly, and the inflation key is arranged in the first hole, connected with the main control circuit board and used for controlling the inflation motor to start; the air release key is arranged in the second hole, and the linkage mechanism is arranged in the shell and is used for driving and connecting the air release key and the reversing plate; the micro switch is arranged on the linkage mechanism and is connected with the main control circuit board; the reversing plate is provided with a vent hole, and the inflation assembly is provided with an air outlet hole and an air inlet hole; when the reversing plate moves to a first preset position, the vent hole is in butt joint with the air outlet hole; when the reversing plate moves to a second preset position, the vent hole is in butt joint with the air inlet hole.

In one embodiment, a key board is disposed on the main control circuit board, and the air inflation key is connected to the main control circuit board through the key board.

In one embodiment, the linkage mechanism comprises an integrated plate, a cam, a stay bar and a deflation spring, wherein the integrated plate is fixed on the shell; the cam is provided with a connecting part and a movable end part, the connecting part is provided with a rotating shaft, the connecting part can be rotatably arranged on the integrated board through the rotating shaft, and the cam is provided with a sliding groove; one end of the support rod is connected with the deflation key, and the other end of the support rod penetrates through the sliding groove and is used for controlling the cam to rotate; one end of the deflation spring is connected with the reversing plate, and the other end of the deflation spring is connected with the inner bottom of the shell; the reversing plate is provided with a connecting surface which is abutted against the movable end part, and the reversing plate can move under the driving of the movable end part.

In an embodiment, the linkage mechanism further includes a reverse buckle, a solenoid valve fixing member and a solenoid valve, the reverse buckle is disposed on the integrated board, a first protrusion is disposed on the strut, and the reverse buckle is configured to be buckled with the first protrusion to limit movement of the strut; the solenoid valve mounting is located on the integrated board, the solenoid valve is located on the solenoid valve mounting, and with the master control circuit board links to each other for promote the back-off, control the back-off with first bellied lock relation.

In one embodiment, a microswitch fixing part is arranged on the stay bar, and the microswitch is arranged on the microswitch fixing part.

In one embodiment, the connecting surface is convex.

In one embodiment, the connecting surface and the main plate form a limiting step for limiting the movement of the cam along the rotating shaft.

In one embodiment, the reversing plate comprises a main plate, a T-shaped rod, a frame body, a clamping plate and a spring mounting groove, and the vent hole is formed in the main plate; the T-bar is disposed on the motherboard, and the connection surface is disposed on the T-bar; the frame body is arranged at the vent hole of the main board and is connected with the T-shaped rod; the screens board sets up in the framework, spring mounting groove locates the bottom of framework is used for settling the gassing spring.

In one embodiment, the inflation assembly comprises a fan blade, a fan blade housing, an air seal plate, a motor housing and an inflation motor, wherein the air outlet and the air inlet are arranged on the fan blade housing; the fan blade is arranged in the fan blade housing; the air seal plate is arranged at the bottom of the fan blade housing; the motor housing is arranged at the top of the fan blade housing; the air inflation motor is arranged on the motor housing and is in transmission connection with the fan blades, and the air inflation motor is electrically connected with the main control circuit board.

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.

In one embodiment, the valve component comprises a column core, a valve plate and a valve spring, wherein the column core is arranged in the connecting through hole in a penetrating manner, one end of the column core is connected with a fixing plate, and the other end of the column core is sleeved with a glass bead; the valve plate is connected to the column core; the valve spring is sleeved on the column core and arranged between the glass bead and the fixing piece; a slope rod is arranged in the reversing plate and positioned in the vent hole, and the column core penetrates through the connecting through hole to abut against the slope rod; when the reversing plate moves, the column core moves on the surface of the slope rod, and the valve plate is closed or the first opening is opened.

In one embodiment, the main control circuit board is provided with an air pressure sensor.

In one embodiment, a protective net is arranged on the shell and positioned at the first opening; and the cover plate is provided with a wind guide strip at the second opening.

Compared with the prior art, the beneficial effect of this application is:

this application will be deflated through link gear and is connected with the switching-over board transmission, then after pressing the gassing button, the switching-over board removes certain distance, has changed the switching-over board and has aerifyd the butt joint relation of subassembly for the inside air flue of electronic air pump switches, thereby makes this application both can be used for aerifing, also can be used for the gassing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view illustrating a ventilation structure of an electric air pump according to an embodiment of the present application.

Fig. 2 is an exploded view of a ventilation structure of an electric air pump according to an embodiment of the present application.

Fig. 3 is an exploded view of a ventilation structure of an electric air pump according to an embodiment of the present application.

Fig. 4 is a sectional view of a part of the structure of the ventilation structure of the electric air pump according to the embodiment of the present application.

Fig. 5 is a partial schematic structural view of a ventilation structure of an electric air pump according to an embodiment of the present application.

Fig. 6 is a partial schematic structural view of a ventilation structure of an electric air pump according to an embodiment of the present application.

Fig. 7 is a partial schematic structural view of a ventilation structure of an electric air pump according to an embodiment of the present application.

Fig. 8 is a partial schematic structural view of a ventilation structure of an electric air pump according to an embodiment of the present application.

Fig. 9 is an exploded view of a part of the ventilation structure of the electric air pump according to an embodiment of the present application.

Icon: 1-air exchange structure of electric air pump; 100-a housing; 110 — a first opening; 120-protecting the net; 130-parting beads; 140-connecting vias; 150-a valve assembly; 151-core column; 151 a-card slot; 152-a fixing sheet; 153-beads; 154-valve plate; 155-a valve spring; 200-a cover plate; 210-a second opening; 211-wind guide strips; 220-a first aperture; 230-a second aperture; 300-an inflation assembly; 310-fan blades; 320-fan blade housing; 330-air sealing plate; 340-a motor housing; 350-an air-filled motor; 360-air outlet holes; 370-an air intake; 400-a master control circuit board; 410-a barometric pressure sensor; 420-power line; 421-a wire box; 422-power panel; 423-power strip protective cover; 430-a keypad; 440-a USB interface; 450-LED lamps; 500-a linkage mechanism; 510-a commutation plate; 511-a connecting surface; 512-a vent hole; 513-a ramp bar; 514-limit step; 515-T shaped rod; 516-a motherboard; 517-frame body; 518-a detent plate; 519-a spring mounting groove; 520-an integrated board; 530-stay bar; 531-first protrusions; 532-second projection; 533-third projection; 540-microswitch fixing part; 541-a strip groove; 550-a deflation spring; 560-a cam; 561-a connecting part; 562-an active end; 563-a rotating shaft; 564-a sliding groove; 570-back-off; 580-electromagnetic valve; 581-solenoid valve fixing piece; 600-a microswitch; 700-an inflation button; 800-air release button.

Detailed Description

The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.

In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

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

Please refer to fig. 1, which is a schematic structural diagram of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The ventilation structure 1 of the electric air pump comprises a casing 100, an inflation button 700, an deflation button 800 and a cover plate 200, wherein the cover plate 200 is covered on the top of the casing 100 by means of fastening connection, bolt connection and the like. A first opening 110 is formed in the side wall of the casing 100, and a protective net 120 is arranged on the casing 100 and positioned at the first opening 110; the cover plate 200 is provided with a second opening 210, the cover plate 200 is provided with a wind guide strip 211 at the second opening 210, and the wind guide strip 211 divides the second opening 210 into a plurality of strip-shaped wind openings.

The ventilation structure 1 of the electric air pump can be applied to the electric air pump and used for inflating and deflating inflatable products such as inflatable mattresses or inflatable beds.

When the electric air pump is in the initial state, the first opening 110 serves as an air outlet of the electric air pump, and the second opening 210 serves as an air inlet of the electric air pump, which may be used for inflation. When the air channel in the electric air pump is switched, the first opening 110 serves as an air inlet of the electric air pump, and the second opening 210 serves as an air outlet of the electric air pump, and at this time, the electric air pump can be used for air discharge.

The cover plate 200 is provided with two adjacent first holes 220 and second holes 230, the inflation button 700 is disposed in the first hole 220, and the deflation button 800 is disposed 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.

Fig. 2 is an exploded view of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The ventilation structure 1 of the electric air pump comprises an air inflation assembly 300, a main control circuit board 400, a reversing board 510, a linkage mechanism 500 and a microswitch 600. The inflation assembly 300 includes an inflation motor 350, and the main control circuit board 400 is disposed in the housing 100 and electrically connected to the inflation motor 350; the main control circuit board 400 is provided with a key board 430, and the air inflation key 700 is connected to the main control circuit board 400 through the key board 430 and is used for controlling the on/off of the air inflation motor 350.

The linkage mechanism 500 is arranged in the casing 100, and is used for driving the air release button 800 to be in transmission connection with the reversing plate 510 and driving the reversing plate 510 to move along with the movement of the air release button 800, so that after the air release button 800 is pressed down, the reversing plate 510 moves for a certain distance under the driving of the linkage mechanism 500, the butt joint relation between the reversing plate 510 and the inflation assembly 300 is changed, the air passage inside the electric air pump is switched, and the air pump can be used for inflation and deflation.

The micro switch 600 is connected with 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 connected with the main control circuit board 400. The micro switch 600 may detect the movement of the deflation button 800, so that the inflation motor 350 may be controlled to be turned on or off by the main control circuit board 400.

The main control circuit board 400 is provided with an air pressure sensor 410. The air pressure sensor 410 may be connected to an inflatable product such as an inflatable bed or an inflatable mattress through a soft air tube, and is configured to detect an internal air pressure of the inflatable product such as the inflatable bed or the inflatable mattress. The main control circuit board 400 may be provided with electrical components such as a processor and a controller.

In the embodiment, the internal air pressure of an inflatable product such as an inflatable bed or an inflatable mattress can be detected by the air pressure sensor 410, and the operation of the inflation motor 350 is controlled by the main control circuit board 400, so that the inflation key 700 can be manually triggered when the internal air pressure of the inflatable product is too low, and the main control circuit board 400 controls the operation of the inflation assembly 300 to perform inflation operation; the deflation key 800 can be manually triggered to switch the air passage when the air pressure in the inflatable product is too high, and then the main control circuit board 400 controls the operation of the inflation assembly 300 to perform deflation operation; or when the internal air pressure of the inflatable product reaches a preset value, the main control circuit board 400 stops the inflation motor 350 to stop the inflation operation or the deflation operation of the electric air pump.

The main control circuit board 400 is connected with a power line 420, and the power line 420 passes through the cover plate 200 to be connected with an external power supply for supplying power. The ventilation 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 with 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.

Fig. 3 is an exploded view of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The ventilation 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 disposed outside the power board 422, the power board 422 is fixedly connected to the cover plate 200, meanwhile, the power board 422 is connected to the power line 420, and the power line 420 is fixed to the cover plate 200 through the power board 422. In an operation process, the power board 422 is connected to the inflation motor 350, and when the power cord 420 is powered on, the power board 422 can send a signal, and the main control circuit board 400 controls the inflation motor 350 to start to operate.

Fig. 4 is a cross-sectional view of a part of the structure of the ventilation structure 1 of the electric air pump according to an embodiment of the present application. The inflator assembly 300 is provided in the housing 100 to compress air. The inflation assembly 300 comprises a fan blade 310, a fan blade housing 320, an air seal plate 330, a motor housing 340 and an inflation motor 350, wherein the fan blade 310 is arranged in the fan blade housing 320; the air seal plate 330 is arranged at the bottom of the fan blade housing 320; the motor housing 340 is connected to the top of the fan blade housing 320 through bolts; the air charging motor 350 is connected to the motor housing 340 through a bolt, a main shaft of the air charging motor 350 is in transmission connection with the fan blade 310, and the air charging motor 350 is electrically connected to the main control circuit board 400.

The air outlet hole 360 and the air inlet hole 370 are arranged on the fan blade cover 320, and the air outlet hole 360 and the air inlet hole 370 are arranged at intervals up and down. The inlet apertures 370 are located below and the outlet apertures 360 are located above.

The reversing plate 510 is provided with a vent 512, and the inflation assembly 300 is provided with an air outlet hole 360 and an air inlet hole 370; when the reversing plate 510 moves to the first preset position, the vent hole 512 is in butt joint with the air outlet hole 360; when the reversing plate 510 moves to the second preset position, the vent holes 512 are in butt joint with the air inlet holes 370. In this embodiment, the movement of the reversing plate 510 from the first preset position to the second preset position is a vertical downward movement.

That is, when the reversing plate 510 moves to the first preset position, the air vent 512 is in butt joint with the air outlet 360, at this time, the air duct in the electric air pump is an air duct for inflation, the first opening 110 is an air outlet of the electric air pump, and the second opening 210 is an air inlet of the electric air pump. When the air-packing assembly 300 operates, air flows sequentially through the second opening 210, the air inlet hole 370, the air outlet hole 360, the vent hole 512, and the first opening 110.

When the reversing plate 510 moves to the second preset position under the action of the linkage mechanism 500, the air vent 512 is in butt joint with the air inlet 370, the air channel in the electric air pump is switched, the first opening 110 is changed into an air inlet of the electric air pump, the second opening 210 is changed into an air outlet of the electric air pump, and at this time, the air channel in the electric air pump is an air channel for air discharge. When the air inflation assembly 300 operates, air flows sequentially through the first opening 110, the vent hole 512, the air inlet hole 370, the air outlet hole 360, and the second opening 210.

In an operation process, when the air release button 800 is pressed, the reversing plate 510 moves to a second preset position, the air duct in the electric air pump is switched to the air duct for air release, the inflation motor 350 is started under the action of the microswitch 600, and the electric air pump releases air. When the air release button 800 is reset, the direction changing plate 510 moves to the first preset position, the air channel in the electric air pump is switched to the air channel for air inflation, and the air inflation motor 350 waits for an air inflation command (the air inflation button 700).

Fig. 5 is a partial schematic structural view of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The linkage 500 includes a manifold 520, a cam 560, a strut 530, and a deflate spring 550, the manifold 520 being bolted to the housing 100. The board 520 may be a bent board, and a step matching with the board 520 may be disposed in the housing 100, so that the board 520 can be fixed more firmly.

One end of the cam 560 is a connecting portion 561, the other end is a movable end 562, a sliding groove 564 is disposed in the middle of the cam 560, a rotating shaft 563 made of stainless steel, plastic or the like is disposed on the connecting portion 561, the cam 560 is rotatably disposed on the manifold 520 through the rotating shaft 563, and the movable end 562 can abut against the top of the reversing plate 510, so that the reversing plate 510 can reciprocate under the driving of the movable end 562 (switch between a first preset position and a second preset position). The surface of the top of the commutation plate 510 that abuts the active end 562 is referred to herein as the connecting surface 511. In this embodiment, the connecting surface 511 is in the shape of a convex arc.

The stay 530 has one end connected to the deflation button 800 and the other end provided with a second protrusion 532, the second protrusion 532 is inserted into the sliding groove 564, when the stay 530 moves down, the cam 560 rotates downward under the action of the protrusion and the sliding groove 564, and when the stay 530 moves up, the cam 560 rotates upward under the action of the protrusion and the sliding groove 564.

In an initial state, an air charging passage is arranged in the air exchange structure 1 of the electric air pump, the reversing plate 510 is located at a first preset position, when the air discharging button 800 is pressed, the supporting rod 530 moves downwards for a certain distance, and the cam 560 rotates for a certain angle, so that the reversing plate 510 moves downwards for a certain distance to reach a second preset position, and the air exchange structure 1 of the electric air pump is switched to the air discharging passage.

One end of the deflating spring 550 is connected with the reversing plate 510, and the other end is connected with the inner bottom of the shell 100; for cushioning shocks.

The reversing plate 510 comprises a main plate 516, a T-shaped rod 515, a frame 517, a clamping plate 518 and a spring mounting groove 519, wherein the vent hole 512 is arranged on the main plate 516; a T-bar 515 is disposed on the main plate 516, and a connecting surface 511 is disposed on the T-bar 515; the frame body 517 is arranged at the vent hole 512 of the main board 516 and is connected with the T-shaped rod 515; the screens 518 sets up on framework 517, and spring mounting groove 519 locates the bottom of framework 517 for settle gassing spring 550.

Wherein the top height of the main plate 516 is higher than the highest height of the connecting surface 511, so that the main plate 516 has a limit step 514 beyond the connecting surface 511, thereby limiting the movement of the cam 560 in the direction of the rotating shaft 563.

Fig. 6 is a partial schematic structural view of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The linkage mechanism 500 further comprises an inverted buckle 570, a solenoid valve fixing member 581 and a solenoid valve 580, wherein the inverted buckle 570 is arranged on the integration plate 520, the first protrusion 531 is arranged on the support rod 530, and the inverted buckle 570 is used for being buckled with the first protrusion 531 so as to limit the movement of the support rod 530; the solenoid valve fixing member 581 is disposed on the board 520, and the solenoid valve 580 is disposed on the solenoid valve fixing member 581, and is connected to the main control circuit board 400, for pushing the reverse buckle 570 and controlling the buckling relationship between the reverse buckle 570 and the first protrusion 531.

In an operation process, after the deflation key 800 is pressed, the reversing plate 510 moves to the second preset position, the ventilation structure 1 of the electric air pump is switched to the deflation air passage, and simultaneously the support rod 530 moves downwards, the inverse buckle 570 is buckled with the first bulge 531 of the support rod 530, so that the deflation key 800 cannot be reset at once, at this time, the deflation key 800 sinks in the second hole 230 until the air pressure sensor 410 detects that the internal air pressure of the inflatable product reaches the preset value, the electromagnetic valve 580 pushes the inverse buckle 570 through the main control circuit board 400, so that the inverse buckle 570 is separated from the support rod 530, so that the deflation key 800 resets, the reversing plate 510 returns to the first preset position, and the ventilation structure 1 of the electric air pump returns to the inflation air passage.

In an operation process, after the deflation key 800 is pressed, the reversing plate 510 moves to the second predetermined position, the air exchange structure 1 of the electric air pump is switched to the deflation air passage, and simultaneously the support rod 530 moves downwards, the inverse buckle 570 is buckled with the first bulge 531 of the support rod 530, so that the deflation key 800 cannot be reset immediately, and at this time, the deflation key 800 is sunk in the second hole 230. When the air release needs to be stopped, the air release button 800 is manually pressed, the microswitch 600 detects the movement of the air release button 800, transmits a signal, and then the main control circuit board 400 enables the electromagnetic valve 580 to push the inverse buckle 570, so that the inverse buckle 570 is separated from the support rod 530, the air release button 800 is reset, the reversing plate 510 returns to the first preset position, and the air exchange structure 1 of the electric air pump returns to the air inflation air passage.

Fig. 7 is a partial schematic structural view of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The support rod 530 is provided with a microswitch fixing piece 540, and the microswitch 600 is arranged on the microswitch fixing piece 540 through a buckling connection mode, a pin connection mode, a bolt connection mode and the like.

The microswitch fixing piece 540 is provided with a strip-shaped groove 541, and the stay 530 is provided with a third protrusion 533 matched with the strip-shaped groove 541. The micro switch 600 is connected to the stay 530 through the strip groove 541 and the third protrusion 533.

Please refer to fig. 8, which is a partial schematic structural diagram of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The main control circuit board 400 may be provided with a USB interface 440 and an LED lamp 450.

Fig. 9 is an exploded view of a part of a ventilation structure 1 of an electric air pump according to an embodiment of the present application. The first opening 110 is provided with a division bar 130 therein, the division bar 130 is provided with a connecting through hole 140, and the connecting through hole 140 is provided with a valve assembly 150 therein.

The valve assembly 150 comprises a column core 151, a valve plate 154 and a valve spring 155, the column core 151 is arranged in the connecting through hole 140 in a penetrating manner, one end of the column core 151 is connected with a fixing plate 152, the other end of the column core 151 is provided with a clamping groove 151a, and a glass bead 153 is sleeved in the clamping groove 151 a; the fixing plate 152 may be a flat plate of a net shape, and the valve plate 154 is connected to the core 151 and may abut against the fixing plate 152. The catching groove 151a can restrict the axial movement of the bead 153.

The valve spring 155 is sleeved on the column core 151 and arranged between the glass bead 153 and the fixing piece 152; wherein, a slope rod 513 is arranged in the reversing plate 510 and positioned in the vent hole 512, and the column core 151 penetrates through the connecting through hole 140 to abut against the slope rod 513; when the reversing plate 510 moves, the core 151 moves on the surface of the slope lever 513, causing the valve sheet 154 to close or open the first opening 110.

The axis of the fixing plate 152, the axis of the valve plate 154, the axis of the bead 153, the axis of the connecting through hole 140, the axis of the column core 151 and the axis of the first opening 110 are all coaxially arranged, the surface of the slope rod 513 has an inclined angle relative to the valve plate 154, when the column core 151 moves on the surface of the slope rod 513, the column core 151 can move along the axis of the column core 151, and therefore the valve assembly 150 can be closed or opened.

The valve plate 154 can be made of soft materials such as silica gel, and the valve component 150 is in a normally closed state; when the air passage in the ventilation structure 1 of the electric air pump is an inflation air passage, the reversing plate 510 is at 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 can be normally operated; when the air passage in the ventilation structure 1 of the electric air pump is the deflation air passage, the reversing plate 510 moves downwards to the second preset position, and the column core 151 moves relative to the slope rod 513, so that the valve is opened, and the electric air pump operates normally.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ventilation structure of an electric air pump, comprising:

a housing provided with a first opening;

the cover plate is covered on the shell, and a second opening, a first hole and a second hole are formed in the cover plate;

the inflation assembly is arranged in the shell and used for compressing air, and is provided with an air outlet hole and an air inlet hole;

the main control circuit board is arranged in the shell and is electrically connected with the inflation assembly;

the inflation key is arranged in the first hole and is connected with the main control circuit board; and

the air release key is arranged in the second hole;

the reversing plate is provided with a vent hole;

the linkage mechanism is arranged in the shell and is used for driving and connecting the deflation key with the reversing plate;

the micro switch is arranged on the linkage mechanism and is connected with the main control circuit board;

when the reversing plate moves to a first preset position, the vent hole is in butt joint with the air outlet hole;

when the reversing plate moves to a second preset position, the vent hole is in butt joint with the air inlet hole.

2. The ventilation structure of an electric air pump according to claim 1, wherein the linkage mechanism comprises:

the integrated plate is fixed on the shell;

the cam is provided with a connecting part and a movable end part, a rotating shaft is arranged on the connecting part and can be rotatably arranged on the integrated board through the rotating shaft, and a sliding groove is arranged on the cam;

one end of the support rod is connected with the deflation key, and the other end of the support rod penetrates through the sliding groove and is used for controlling the cam to rotate; and

one end of the deflation spring is connected with the reversing plate, and the other end of the deflation spring is connected with the inner bottom of the shell;

the reversing plate is provided with a connecting surface which is abutted against the movable end part, and the reversing plate can move under the driving of the movable end part.

3. The ventilation structure of an electric air pump according to claim 2, wherein the linkage mechanism further comprises:

the support rod is provided with a first protrusion, and the reverse buckle is used for buckling with the first protrusion so as to limit the movement of the support rod;

the electromagnetic valve fixing piece is arranged on the integrated plate; and

the electromagnetic valve is arranged on the electromagnetic valve fixing piece and connected with the main control circuit board and used for pushing the reverse buckle and controlling the reverse buckle and the first convex buckling relation.

4. The ventilation structure of an electric air pump as claimed in claim 2, wherein the stay is provided with a microswitch mounting member, and the microswitch is provided on the microswitch mounting member.

5. The ventilation structure of an electric air pump according to claim 2, wherein the direction changing plate comprises:

the air vent is arranged on the main board;

the T-shaped rod is arranged on the main board, the connecting surface is arranged on the T-shaped rod, and the connecting surface is in a convex arc shape;

the frame body is arranged at the vent hole of the main board and is connected with the T-shaped rod;

the clamping plate is arranged on the frame body; and

the spring mounting groove is arranged at the bottom of the frame body and used for mounting the deflation spring;

the connecting surface and the main plate form a limiting step, and the limiting step is used for limiting the movement of the cam along the rotating shaft.

6. The air exchange structure of an electric air pump according to claim 2, wherein said air-inflating assembly comprises:

the air outlet hole and the air inlet hole are formed in the fan blade housing;

the fan blade is arranged in the fan blade housing;

the air sealing plate is arranged at the bottom of the fan blade housing;

the motor housing is arranged at the top of the fan blade housing; and

the air inflation motor is arranged on the motor housing and is in transmission connection with the fan blades, and the air inflation motor is electrically connected with the main control circuit board.

7. The ventilation structure of an electric air pump as claimed in claim 2, wherein a partition bar is provided in the first opening, a connecting through hole is provided in the partition bar, and a valve assembly is provided in the connecting through hole.

8. The air exchange structure of an electric air pump according to claim 7, wherein the valve assembly comprises:

the column core penetrates through the connecting through hole, one end of the column core is connected with a fixing piece, and the other end of the column core is sleeved with a glass bead;

the valve plate is connected to the column core; and

the valve spring is sleeved on the column core and arranged between the glass bead and the fixing piece;

a slope rod is arranged in the reversing plate and positioned in the vent hole, and the column core penetrates through the connecting through hole to abut against the slope rod;

when the reversing plate moves, the column core moves on the surface of the slope rod, and the valve plate is closed or the first opening is opened.

9. The ventilation structure of an electric air pump as claimed in any one of claims 1 to 8, wherein an air pressure sensor is disposed on the main control circuit board.

10. The ventilation structure of an electric air pump as claimed in claim 1, wherein a protective net is provided on the housing at the first opening;

and the cover plate is provided with a wind guide strip at the second opening.