Inflation and deflation pump with variable air duct

Abstract

The utility model aims to provide a variable air duct inflating and deflating pump, which comprises a pump body, a reversing block and a fan, the pump body is provided with a pump cavity, a first air port, a second air port and a third air port, the first air port, the second air port and the third air port are communicated with the pump cavity, a reversing cavity is arranged in the reversing block, a blocking surface is arranged on one side of the reversing cavity, and the reversing block is rotatably arranged in the pump cavity. When the reversing block is stressed to rotate, the first air opening, the reversing cavity and the second air opening are sequentially communicated, the reversing cavity and the third air opening are blocked by the blocking face, or the first air opening, the reversing cavity and the third air opening are sequentially communicated, and the fan is arranged in the pump cavity and located between the first air opening and the reversing cavity. The draught fan is used for driving gas to flow from the first air opening to the direction of the reversing cavity or driving the gas to flow from the direction of the reversing cavity to the first air opening. Therefore, by rotating the reversing block, different air ducts can be controlled by using a single air pump, so that different inflation requirements of the current inflation product are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air pump, in particular to a variable air duct inflation and deflation pump. BACKGROUND

[0002] As the core device of gas pressure energy conversion, the technical development of air pump has always revolved around functional integration and scene adaptability. Early air pumps (such as Otto von Grik air pump) only realized single inflation or deflation function, and then gradually derived multiple types of products such as volumetric and speed type, and the application field was expanded to industrial, medical and consumer electronics scenes. In recent years, with the functional upgrade of intelligent wearable devices and outdoor products, the traditional air pump architecture faces new technical challenges.

[0003] For example, for inflatable products such as air cushions, in addition to the inner cavity opened in the inflatable product body, a plurality of ventilation holes are also opened on the surface at present, wherein the inner cavity and the ventilation hole are independent gas supply channels, the inner cavity is used for inflating the air cushion, and the ventilation hole is used for forming a ventilation structure on the surface, so as to effectively improve the experience of the user.

[0004] However, for such inflatable products with different inflation needs, the existing technology generally adopts a split type air pump architecture, for example, a high pressure air pump is used for inflation and deflation of the inner cavity of the air cushion body, and other independent air pumps are configured for the ventilation hole channel, so at least two independent air pumps are required to meet the current use needs of inflatable products. In view of this, in order to solve the above problems, the present application is proposed, which can control different air ducts by a single motor. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the insufficient in prior art, provide a variable air duct inflation and deflation pump that can control different air ducts by a single motor to meet the variable inflation needs of current inflatable products.

[0006] The utility model aims at overcoming the insufficient in prior art, provide a variable air duct inflation and deflation pump that can control different air ducts by a single motor to meet the variable inflation needs of current inflatable products.

[0007] A variable air duct inflation and deflation pump comprises:

[0008] A pump body is provided with a pump cavity, a first air port, a second air port and a third air port which are all communicated with the pump cavity;

[0009] A reversing block is provided with a reversing cavity, and a blocking surface is arranged on one side of the reversing cavity; the reversing block is rotationally arranged in the pump cavity; when the reversing block is reversely rotated, the first air port, the reversing cavity and the second air port are sequentially communicated, and the blocking surface blocks the reversing cavity and the third air port, or the first air port, the reversing cavity and the third air port are sequentially communicated; and

[0010] A fan is arranged in the pump cavity and located between the first air port and the reversing cavity, and is used to drive the gas to flow from the first air port to the reversing cavity or from the reversing cavity to the first air port.

[0011] Optionally, the pump cavity comprises a straight-through cavity and a bending cavity, the bending cavity is in communication with the straight-through cavity, the first air port and the third air port are in communication with two ends of the straight-through cavity respectively, the second air port is in communication with the bending cavity, and the reversing block is rotationally arranged in the straight-through cavity.

[0012] Optionally, a pump valve is arranged on the second air port, and a rotating block is rotationally arranged in the bending cavity, and is used to rotate under force to push against or move away from the pump valve, and when the rotating block pushes against the pump valve, the pump valve opens the second air port.

[0013] Optionally, the rotating block comprises a block body, an arc-shaped surrounding piece and a ventilation mesh block, axial two ends of the arc-shaped surrounding piece are connected with the block body and the ventilation mesh block respectively, so that a transfer groove is formed between the block body, the arc-shaped surrounding piece and the ventilation mesh block, and the transfer groove is in communication with the second air port and the reversing cavity respectively.

[0014] Optionally, the side wall of the ventilation mesh block has two protruding portions distributed at intervals, a side recess is formed between the two protruding portions, and when the rotating block rotates under force, the side recess and one of the two protruding portions abut against the pump valve.

[0015] Optionally, the reversing block comprises a reversing main body and an adapter block, the reversing main body is rotationally arranged in the straight-through cavity, the reversing cavity and the blocking surface are located on the reversing main body, one end of the adapter block is clamped with the reversing main body, and the other end of the adapter block extends to the side of the block body away from the transfer groove in sequence through the ventilation mesh block and the block body.

[0016] Optionally, a first knob is arranged on the side of the rotating block away from the transfer groove, and the first knob extends out from the top side of the pump body.

[0017] Optionally, a second knob is arranged on the end of the adapter block away from the reversing main body, and the second knob is located inside the first knob.

[0018] Optionally, a spring is further arranged between the adapter block and the ventilation mesh block.

[0019] Optionally, a heating element is further arranged in the straight-through cavity, and the heating element is located between the reversing cavity and the fan.

[0020] Compared with the prior art, the utility model has at least the following advantages:

[0021] Through the rotation of the reversing block, the first air port, the reversing cavity and the second air port form independent air ducts, or the first air port, the reversing cavity and the third air port form independent air ducts, so that the single air pump can control the ventilation of different air ducts, thereby meeting different air filling requirements of the current air filling products. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the premise of the drawings.

[0023] Figure 1 It is the structure schematic diagram of the variable air duct inflation and deflation pump of an embodiment of the utility model;

[0024] Figure 2 It is the cross-sectional schematic diagram of the variable air duct inflation and deflation pump shown in Figure 1; Figure 1

[0025] Figure 3 It is the explosion structure schematic diagram of the variable air duct inflation and deflation pump shown in Figure 1; Figure 1

[0026] Figure 4 It is the partial cross-sectional schematic diagram of the pump body of an embodiment of the utility model;

[0027] Figure 5 It is the cross-sectional schematic diagram of the partial structure of one working state of the variable air duct inflation and deflation pump shown in Figure 1; Figure 1

[0028] Figure 6 It is the cross-sectional schematic diagram of the partial structure of another working state of the variable air duct inflation and deflation pump shown in Figure 1; Figure 1

[0029] It is the structure schematic diagram of the rotating block of an embodiment of the utility model; Figure 7

[0030] It is the structure schematic diagram of the reversing main body of an embodiment of the utility model; Figure 8

[0031] It is the structure schematic diagram of the adapter block of an embodiment of the utility model; Figure 9 ​​​​

[0032] Figure 10 Structure diagram of the horizontal inner shell and the vertical inner shell of an embodiment of the present application;

[0033] Figure 11 For Figure 1 Another angle of the partial structure diagram of the variable air duct inflation and deflation pump.

[0034] Explanation of reference signs:

[0035] 10, variable air duct inflation and deflation pump; 100, pump body; 200, reversing block; 300, fan; 121, first air port; 131, second air port; 122, third air port; 2111, reversing cavity; 2112, blocking surface; 123, straight-through cavity; 132, bent cavity; 400, pump valve; 500, rotating block; 510, block body; 520, arc-shaped surrounding piece; 530, ventilation mesh block; 501, transfer groove; 531, protruding part; 532, side recess; 210, reversing main body; 220, adapter block; 211, rotating ball; 212, rotating column; 213, positioning circular table; 221, central shaft; 222, sleeve; 223, connecting strip; 2121, clamping groove; 224, clamping block; 610, first knob; 620, second knob; 630, spring; 640, heating element; 110, pump shell; 120, horizontal inner shell; 130, vertical inner shell; 140, top cover; 111, air blowing hole; 112, inflation and deflation hole; 150, circuit board; 161, contact switch; 162, air blowing switch; 225, protruding block; 163, adjusting key; 164, heating key; 170, partition block; 113, wire compartment; 180, flip cover. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The drawings show the preferred embodiments of the present application.

[0037] As Figures 1 to 6As shown, a variable air duct inflation and deflation pump 10 comprises a pump body 100, a reversing block 200 and a fan 300, the pump body 100 is provided with a pump cavity, a first air port 121, a second air port 131 and a third air port 122 which are all communicated with the pump cavity, the reversing block 200 is provided with a reversing cavity 2111, a blocking surface 2112 is arranged on one side of the reversing cavity 2111, the reversing block 200 is rotationally arranged in the pump cavity, when the reversing block 200 is rotationally driven, the first air port 121, the reversing cavity 2111 and the second air port 131 are sequentially communicated, and the blocking surface 2112 blocks the reversing cavity 2111 and the third air port 122, or the first air port 121, the reversing cavity 2111 and the third air port 122 are sequentially communicated, the fan 300 is arranged in the pump cavity, and the fan 300 is located between the first air port 121 and the reversing cavity 2111, the fan 300 is used for driving the gas to flow from the first air port 121 to the reversing cavity 2111, or for driving the gas to flow from the reversing cavity 2111 to the first air port 121.

[0038] It should be noted that the first air port 121, the second air port 131 and the third air port 122 are all communicated with the pump cavity. When the reversing block 200 is forced to rotate, the reversing block 200 can change the communication state between the first air port 121 and the second air port 131 and the third air port 122, so as to achieve the purpose of changing the air duct. Specifically, when the reversing block 200 is forced to rotate, so that the first air port 121 is communicated with the second air port 131 through the reversing cavity 2111, the blocking surface 2112 of the reversing block 200 will block the reversing cavity 2111 and the third air port 122, at this time, the first air port 121, the reversing cavity 2111 and the second air port 131 form a communicated air duct. Among them, the first air port 121 is used for communication with the outside, and the second air port 131 is used for communication with the inner cavity of the inflatable product body. At this time, by controlling the forward rotation or reverse rotation of the fan 300, the gas flows through the first air port 121, the reversing cavity 2111 and the second air port 131 in turn under the driving action of the fan 300, at this time, the variable air duct inflation and deflation pump 10 is used for inflating the inner cavity of the inflatable product body; when the gas flows through the second air port 131, the first air port 121 and the reversing cavity 2111 in turn under the driving action of the fan 300, at this time, the variable air duct inflation and deflation pump 10 is used for deflating the inner cavity of the inflatable product body. When the reversing block 200 is forced to rotate, so that the first air port 121 is communicated with the third air port 122 through the reversing cavity 2111, at this time, the first air port 121, the reversing cavity 2111 and the third air port 122 form a communicated air duct. Among them, the first air port 121 is also communicated with the outside, and the third air port 122 is used for communication with the ventilation hole on the surface of the inflatable product. At this time, by controlling the forward rotation of the fan 300, the gas flows through the first air port 121, the reversing cavity 2111 and the third air port 122 in turn under the driving action of the fan 300, at this time, the variable air duct inflation and deflation pump 10 is used for continuously blowing the ventilation hole on the surface of the inflatable product, so that the surface of the inflatable product realizes the ventilation function. In this way, different air ducts can be controlled by a single air pump, so as to meet the different inflation needs of the inflatable product at present.

[0039] As shown in Figure 4 In an embodiment, the pump cavity includes a straight-through cavity 123 and a bending cavity 132, the bending cavity 132 is communicated with the straight-through cavity 123, the first air port 121 and the third air port 122 are respectively communicated with two ends of the straight-through cavity 123, the second air port 131 is communicated with the bending cavity 132, and the reversing block 200 is rotationally arranged in the straight-through cavity 123.

[0040] It should be noted that in order to facilitate the rotation of the reversing block 200, the first air port 121 can be communicated with the second air port 131 / third air port 122 through the reversing cavity 2111, and thus the pump cavity is arranged in a structure in which the straight-through cavity 123 is communicated with the bent cavity 132. Specifically, the straight-through cavity 123 is in a straight-through communication state, and the bent cavity 132 is communicated with the middle part of the straight-through cavity 123, wherein the two ends of the straight-through cavity 123 are respectively communicated with the first air port 121 and the third air port 122, and the bent cavity 132 is communicated with the second air port 131.

[0041] As shown in Figures 1 to 3 , Figures 5 to 7 In an embodiment, the second air port 131 is provided with a pump valve 400, and a rotating block 500 is rotatably arranged in the bent cavity 132, which is used to be pushed against or away from the pump valve 400 when being forced to rotate, so that the pump valve 400 is opened when the rotating block 400 pushes against the pump valve 500.

[0042] It should be noted that the second air port 131 is used to be communicated with the inner cavity of the inflatable product body, and the inflatable product needs to be kept in an inflated state during actual use, and thus the pump valve 400 is installed on the second air port 131 to block the second air port 131 through the pump valve 400. When it is needed to inflate or deflate the inner cavity of the inflatable product body, the pump valve 400 needs to be opened from the second air port 131 to ensure that the gas can smoothly enter the inner cavity of the inflatable product body through the second air port 131 or the gas can flow out of the inner cavity of the inflatable product body through the second air port 131. Specifically, a rotating block 500 is rotatably arranged in the bent cavity 132, which can be pushed against or away from the pump valve 400 when being forced to rotate, so that the pump valve 400 is opened when the rotating block 500 pushes against the pump valve 400. When the rotating block 500 is away from the pump valve 400, the pump valve 400 will again block the second air port 131. It should be particularly noted that by rotating the reversing block 200 and the rotating block 500, the variable air duct inflation / deflation pump 10 of the present application can inflate or deflate the inner cavity of the inflatable product body and blow air to the air vents on the surface of the inflatable product, and thus the single air pump of the present application can meet different inflation requirements of the inflatable product.

[0043] As shown in Figure 7 In an embodiment, the rotating block 500 includes a block body 510, an arc-shaped surrounding piece 520, and a ventilation mesh block 530, the two axial ends of the arc-shaped surrounding piece 520 are respectively connected with the block body 510 and the ventilation mesh block 530, so that a transfer groove 501 is formed between the block body 510, the arc-shaped surrounding piece 520, and the ventilation mesh block 530, and the transfer groove 501 is respectively communicated with the second air port 131 and the reversing cavity 2111.

[0044] It should be noted that the rotating block 500 is located in the bending cavity 132, and the rotating block 500 needs to push the pump valve 400 when it is forced to rotate. In order to avoid the rotating block 500 blocking the gas flow in the bending cavity 132, the rotating block 500 is arranged in the structure of the embodiment. Specifically, the arc-shaped surrounding piece 520 is a local structure of a cylindrical surface, and the two axial ends are fixed with the block 510 and the ventilation mesh block 530 respectively. The ventilation mesh block 530 is in a mesh structure, and a mesh hole is formed in the ventilation mesh block 530. The block 510, the arc-shaped surrounding piece 520 and the ventilation mesh block 530 form a transfer groove 501. Thus, when the rotating block 500 rotates in the bending cavity 132, the reversing cavity 2111, the ventilation mesh block 530, the transfer groove 501 and the second air port 131 can be stably connected. Thus, when the air pump needs to be in a working state of inflating or deflating the inner cavity of the inflatable product body, the gas can flow smoothly between the first air port 121, the reversing cavity 2111 and the second air port 131 in a forward or reverse direction to inflate or deflate the inner cavity of the inflatable product body.

[0045] As shown in Figure 7 , in an embodiment, the side wall of the ventilation mesh block 530 has two protruding portions 531 distributed at intervals, and a side groove 532 is formed between the two protruding portions 531. When the rotating block 500 is forced to rotate, the side groove 532 and one of the two protruding portions 531 abut against the pump valve 400.

[0046] It should be noted that the inner cavity of the inflatable product body has three different states, namely the inflation state, the deflation state and the stop state. In the inflation state and the deflation state, the pump valve 400 needs to be pushed away to ensure that the second air port 131 is opened. In the stop state, the pump valve 400 needs to be closed to ensure that the second air port 131 is closed. Therefore, in order to achieve the above purpose, two protruding portions 531 are arranged on the side wall of the ventilation mesh block 530 at intervals, and a side groove 532 is formed between the two protruding portions 531. The side wall of the side groove 532 and the side wall of the two protruding portions 531 are continuously changed. Thus, when the rotating block 500 is forced to rotate, when the two protruding portions 531 push the pump valve 400 respectively, the pump valve 400 opens the second air port 131, and at this time the air pump is in the inflation state or the deflation state of inflating or deflating the inner cavity of the inflatable product body. When the side groove 532 pushes the pump valve 400, because the side groove 532 is a recessed structure, the pump valve 400 remains in a state of closing the second air port 131, that is, in the stop state.

[0047] As shown in Figure 2 , Figure 3 , and Figure 8As shown, in an embodiment, the reversing block 200 comprises a reversing body 210 and an adapter block 220, the reversing body 210 is rotationally arranged in the straight-through cavity 123, the reversing cavity 2111 and the blocking surface 2112 are located on the reversing body 210, one end of the adapter block 220 is clamped with the reversing body 210, and the other end of the adapter block 220 sequentially passes through the ventilation mesh block 530 and the block body 510 to extend to the side of the block body 510 away from the transfer groove 501.

[0048] It should be noted that, in order to facilitate the assembly of parts, the reversing block 200 is arranged as an assembled structure of the reversing body 210 and the adapter block 220. Specifically, the reversing body 210 is rotationally installed in the straight-through cavity 123, the reversing cavity 2111 is formed in the reversing body 210, the blocking surface 2112 is arranged on one side of the reversing cavity 2111, one end of the adapter block 220 is clamped and fixed with the reversing body 210, and the other end of the adapter block 220 passes through the center of the ventilation mesh block 530 and the center of the block body 510 to extend to the top of the block body 510. In this way, the reversing body 210 can be rotated by applying a torsion force to the top end of the adapter block 220, thereby changing the communication state of the reversing cavity 2111 with the second air port 131 and the third air port 122.

[0049] As shown, Figure 8 In an embodiment, the reversing body 210 comprises a rotating ball 211 and a rotating column 212, the rotating ball 211 is provided with a full-through hole and two half-through holes, the axis a of the full-through hole and the axes b of the two half-through holes are perpendicular to each other, so that the full-through hole and the two half-through holes are communicated to form the reversing cavity 2111, the rotating column 212 is arranged on the rotating ball 211 to communicate with one of the half-through holes, the rotating ball 211 is rotationally arranged in the straight-through cavity 123, and the adapter block 220 is clamped with the rotating column 212.

[0050] It should be noted that the rotating ball 211 and the rotating column 212 are integrally formed as a plastic structure, one side of the rotating ball 211 adjacent to the rotating column 212 is formed as the blocking surface 2112, a spherical groove matching the rotating ball 211 is formed in the straight-through cavity 123, and the rotating ball 211 is rotationally arranged in the spherical groove. In this way, the rotating ball 211 can be rotated by rotating the rotating column 212 through the adapter block 220. When the full-through hole of the rotating ball 211 is communicated with the first air port 121 and the third air port 122 respectively, the fan 300 can drive the gas to sequentially pass through the first air port 121, the full-through hole and the third air port 122. When the blocking surface 2112 blocks the third air port 122, a communication gas path is formed between the first air port 121, the two half-through holes and the second air port 131, so that the inner cavity of the inflatable product body communicated with the second air port 131 can be inflated or deflated.

[0051] As shown, Figure 8As shown, in one embodiment, a positioning frustum 213 is provided on the outer side wall of the rotating ball 211 away from the rotating column 212, and a positioning groove is provided on the inner side wall of the through cavity 123, and the positioning frustum 213 is adapted to be accommodated in the positioning groove.

[0052] It should be noted that the positioning frustum 213 and the rotating column 212 are coaxial structures. Thus, by using the positioning frustum 213 and the rotating column 212 for positioning, the rotational stability of the rotating ball 211 within the through cavity 123 can be ensured.

[0053] like Figure 3 and Figure 9 As shown, in one embodiment, the adapter block 220 includes a central shaft 221, a sleeve 222 and several connecting bars 223. One end of each connecting bar 223 is disposed on the inner side wall of one end of the sleeve 222, and the other end of each connecting bar 223 is disposed on one end of the central shaft 221. The sleeve 222 is engaged with the rotating column 212. The end of the central shaft 221 away from the sleeve 222 passes through the ventilation mesh block 530 and the block 510 in sequence to extend to the side of the block 510 away from the central transfer groove 501.

[0054] It should be noted that the central shaft 221, sleeve 222, and each connecting strip 223 are integrally injection molded plastic structures. The connecting strips 223 have a hollow structure, so that when the sleeve 222 is engaged with the rotating column 212, the gas in the reversing cavity 2111 can flow through the hollow structure between the connecting strips 223 to reach the second air outlet 131.

[0055] like Figure 8 and Figure 9 As shown, in one embodiment, the rotating column 212 has several slots 2121 on the end away from the rotating ball 211, and several locking blocks 224 are provided on the inner side wall of the sleeve 222, each locking block 224 corresponding to and engaging with the corresponding slot 2121. Thus, when the sleeve 222 is fitted onto the outer side wall of the rotating column 212, the locking blocks 224 are inserted into the slots 2121 for locking and fixing, thereby allowing the adapter block 220 to stably drive the reversing body 210 to rotate.

[0056] like Figures 1 to 3 As shown, in one embodiment, a first knob 610 is provided on the side of the rotating block 500 away from the transfer groove 501, and the first knob 610 extends from the top side of the pump body 100.

[0057] It should be noted that, in order to facilitate the application of torque to the rotating block 500, a first knob 610 is installed on the top of the rotating block 500. The first knob 610 can be snapped into the rotating block 500 or locked in place by screws, thus making it convenient for the user to turn the rotating block 500.

[0058] like Figures 1 to 3As shown, in an embodiment, the adapter block 220 is provided with a second knob 620 at one end away from the reversing body 210, and the second knob 620 is located inside the first knob 610.

[0059] It should be noted that the second knob 620 is fixedly connected with the middle shaft 221 at the end away from the sleeve 222, for example, the second knob 620 is locked and fixed with the middle shaft 221 by a screw, so that the reversing body 210 can be driven to rotate by rotating the second knob 620, thereby changing the air duct structure in the air pump.

[0060] As shown in Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, in an embodiment, the adapter block 220 and the ventilation mesh block 530 are further provided with a spring 630.

[0061] It should be noted that the adapter block 220 and the reversing body 210 are clamped and fixed, in order to avoid falling off between the two, therefore the spring 630 is installed between the adapter block 220 and the ventilation mesh block 530, and the adapter block 220 is reliably prevented from falling off with the reversing body 210 by the elastic force of the spring 630. Specifically, the spring 630 is sleeved on the middle shaft 221, and the spring 630 abuts against the connecting strip 223 and the ventilation mesh block 530 respectively, so as to ensure that the sleeve 222 is stably and reliably clamped and fixed with the reversing body 210.

[0062] As shown in Figure 2 and Figure 3 As shown, in an embodiment, the straight-through cavity 123 is further provided with a heating element 640, and the heating element 640 is located between the reversing cavity 2111 and the fan 300.

[0063] It should be noted that if the air holes on the surface of the inflatable product need to continuously blow out 30℃ air, especially in cold weather, in order to avoid the temperature of the inflatable cushion and other inflatable products being too low, the heating element 640 is installed in the straight-through cavity 123, and when the first air port 121, the reversing cavity 2111 and the third air port 122 are connected with each other, the heating element 640 is started to heat, and the gas is heated by the heating element 640 and then enters the air holes on the surface of the inflatable product from the third air port 122, so that the surface of the inflatable product realizes the function of blowing hot air. In an embodiment, the heating element 640 is a heating wire, and since the heating element 640 is an existing part, it can be directly installed and used, and details are not described here.

[0064] As shown in Figure 3 , Figure 10As shown, in an embodiment, the pump body 100 comprises a pump shell 110, a horizontal inner shell 120, a vertical inner shell 130, and a top cover 140. The horizontal inner shell 120 and the vertical inner shell 130 are arranged in the pump shell 110, and the top cover 140 is arranged on the top of the pump shell 110. The horizontal inner shell 120 and the vertical inner shell 130 are in communication with each other to jointly form a pump cavity. A straight-through cavity 123 is located on the horizontal inner shell 120, a bent cavity 132 is located on the vertical inner shell 130, a first air port 121 is located at one end of the horizontal inner shell 120, a third air port 122 is located at the other end of the horizontal inner shell 120, and a second air port 131 is located on the vertical inner shell 130.

[0065] In this way, the pump body 100 is assembled by a plurality of components, facilitating injection molding production of the components, and forming an internal air duct structure through an assembly process.

[0066] As shown in the figures, Figures 1 to 3 In an embodiment, the pump shell 110 is provided with a blowing hole 111 and a charging and discharging hole 112. The blowing hole 111 is in communication with the third air port 122, and the charging and discharging hole 112 is in communication with the second air port 131. The pump valve 400 is arranged on the inner side wall of the charging and discharging hole 112.

[0067] It should be noted that in this way, the horizontal inner shell 120 and the vertical inner shell 130 can be in communication with the inflatable product through the pump shell 110.

[0068] As shown in the figures, Figure 2 and Figure 3 In an embodiment, the pump body 100 further comprises a circuit board 150. The circuit board 150 is arranged in the pump shell 110. The fan 300 and the heating element 640 are electrically connected to the circuit board 150.

[0069] It should be noted that the circuit board 150 is provided with a control chip, and the fan 300 is controlled to start and stop by the control chip.

[0070] As shown in the figures, Figure 3 and Figure 11 In an embodiment, the vertical inner shell 130 is provided with two contact switches 161. The two contact switches 161 are electrically connected to the circuit board 150. When the knob 500 is rotated under force, the outer side wall of the block body 510 presses or moves away from the contact switch 161.

[0071] It should be noted that when the rotating block 500 is forced to rotate clockwise or counterclockwise, the convex part 531 of the ventilation net block 530 can push the pump valve 400 away, so that the air pump can inflate or deflate the inner cavity of the inflatable product body. In order to make the rotating block 500 rotate to the position, that is, rotate to the bottom clockwise or counterclockwise, push the pump valve 400 away, and start the air blower 300 at the same time, two contact switches 161 are arranged. Specifically, in the initial state, the block 510 does not press the two contact switches 161, and only when the rotating block 500 is forced to rotate and rotates to the bottom to push the pump valve 400 away, the block 510 will press one of the contact switches 161, so as to start the air blower 300 in forward rotation or reverse rotation. In this way, the air blower 300 can be started at the same time by rotating the rotating block 500, without the need for additional pressing of the start button, which is convenient to operate.

[0072] As shown in Figure 2 , Figure 5 , Figure 9 In an embodiment, the circuit board 150 is further provided with a blowing switch 162, and the outer side wall of the sleeve 222 is further provided with a convex block 225. When the adapter block 220 is forced to rotate, the convex block 225 presses the blowing switch 162.

[0073] It should be noted that the blowing switch 162 passes through the vertical through inner shell 130. In this way, when the adapter block 220 is forced to rotate, the first air port 121, the reversing cavity 2111 and the third air port 122 are connected, the convex block 225 presses the blowing switch 162, so that the air blower 300 is started, and the gas enters the ventilation hole of the inflatable product surface from the third air port 122 to realize continuous blowing. In this way, the air blower 300 does not need to be started by pressing the button additionally, so it is convenient to operate.

[0074] As shown in Figure 1 In an embodiment, the top cover 140 is further provided with an adjusting button 163, and the bottom of the adjusting button 163 abuts against an adjusting switch, wherein the adjusting switch is installed on the circuit board 150.

[0075] It should be noted that the adjusting button 163 has two, and when the air blower 300 is in the working state of blowing the ventilation hole of the inflatable product surface through the third air port 122, the rotating speed of the air blower 300 can be adjusted by pressing the two adjusting buttons 163, so as to control the air volume of the ventilation hole of the inflatable product surface.

[0076] As shown in Figure 1 In an embodiment, the top cover 140 is further provided with a heating button 164, and the bottom of the heating button 164 abuts against a heating switch, wherein the heating switch is installed on the circuit board 150.

[0077] It is to be noted that when the fan 300 is in the working state of blowing air to the air hole of the surface of the inflatable product through the third air outlet 122, the heating button 164 is pressed to start or stop the heating element 640, so that the third air outlet 122 can blow natural wind or hot air.

[0078] As shown in Figure 2 , Figure 3 and Figure 4 , in an embodiment, the pump body 100 further comprises a partition block 170, which is arranged in the pump shell 110, so that the partition block 170 and the inner side wall of the pump shell 110 form a wire compartment 113.

[0079] It is to be noted that the wire compartment 113 is used to supply power to the circuit board 150, and the partition block 170 is provided with a filter hole, and the partition block 170 is located between the wire compartment 113 and the first air outlet 121. In this way, the filter hole of the partition block 170 allows gas to enter and exit the first air outlet 121.

[0080] Further, as shown in Figure 1 , in an embodiment, the pump shell 110 is further provided with a flip cover 180, which is used to shield or open the wire compartment 113. In this way, the wire compartment 113 is shielded by the flip cover 180, so that the air pump is effectively isolated and protected when not in use.

[0081] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the application. In the present application, the installation / fixation / arrangement, unless otherwise defined, can be understood as including but not limited to locking and fixing by screws / wires, welding. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A variable air duct inflation and deflation pump characterized by, The utility model relates to a pump, including: Pump body, the pump body is provided with pump cavity and first air port, second air port and third air port all with pump cavity communication, Reversing block, the reversing cavity is set up in the reversing block, the one side of reversing cavity is provided with the blocking surface, the reversing block rotation is arranged in the pump cavity, the first air port, the reversing cavity, the second air port are communicated in proper order when the reversing block is stressed to rotate, and the blocking surface blocks the reversing cavity and the third air port, or the first air port, the reversing cavity, the third air port are communicated in proper order, Fan, the fan is arranged in the pump cavity, and the fan is located between the first air port and the reversing cavity, the fan is used to drive the gas to flow from the first air port to the direction of the reversing cavity, or is used to drive the gas to flow from the reversing cavity to the direction of the first air port.

2. The variable air-duct plenum pump of claim 1, wherein, The pump cavity includes straight-through cavity and bending cavity, the bending cavity is communicated with the straight-through cavity, the first air port and the third air port are communicated with both ends of the straight-through cavity respectively, the second air port is communicated with the bending cavity, and the reversing block is rotationally arranged in the straight-through cavity.

3. The variable air-duct plenum pump of claim 2, wherein, The second air port is provided with a pump valve, and a rotating block is rotationally arranged in the bending cavity. The rotating block is used to be stressed to rotate so as to push the pump valve or move away from the pump valve. When the rotating block pushes the pump valve, the pump valve opens the second air port.

4. The variable air-duct plenum pump of claim 3, wherein, The rotating block includes a block body, an arc-shaped surrounding piece, and a ventilation mesh block. The axial ends of the arc-shaped surrounding piece are connected with the block body and the ventilation mesh block respectively, so that a transfer groove is formed between the block body, the arc-shaped surrounding piece, and the ventilation mesh block. The transfer groove is communicated with the second air port and the reversing cavity respectively.

5. The variable air-duct plenum pump of claim 4, wherein, The side wall of the ventilation mesh block has two protrusions distributed at intervals, and a side groove is formed between the two protrusions. When the rotating block is stressed to rotate, the side groove and one of the two protrusions abut against the pump valve.

6. The variable air-duct plenum pump of claim 4, wherein, The reversing block includes a reversing main body and an adapter block. The reversing main body is rotationally arranged in the straight-through cavity. The reversing cavity and the blocking surface are located on the reversing main body. One end of the adapter block is clamped with the reversing main body, and the other end of the adapter block extends to the side of the block body away from the transfer groove by sequentially penetrating through the ventilation mesh block and the block body.

7. The variable air-duct plenum pump of claim 6, wherein, A first knob is arranged on the side of the rotating block away from the transfer groove, and the first knob extends from the top side of the pump body.

8. The variable air-duct plenum pump of claim 7, wherein, A second knob is arranged on the end of the adapter block away from the reversing main body, and the second knob is located inside the first knob.

9. The variable air-duct plenum pump of claim 6, wherein, A spring is further arranged between the adapter block and the ventilation mesh block.

10. The variable air-duct plenum pump of claim 2, wherein, A heating element is further arranged in the straight-through cavity, and the heating element is located between the reversing cavity and the fan.

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