CN110513312B - Inflation and deflation air pump - Google Patents

Inflation and deflation air pump Download PDF

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Publication number
CN110513312B
CN110513312B CN201910812979.5A CN201910812979A CN110513312B CN 110513312 B CN110513312 B CN 110513312B CN 201910812979 A CN201910812979 A CN 201910812979A CN 110513312 B CN110513312 B CN 110513312B
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CN
China
Prior art keywords
air
air inlet
inflation
fan blade
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910812979.5A
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Chinese (zh)
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CN110513312A (en
Inventor
杨春华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Hongsheng Metal & Plastic Technoloty Co ltd
Original Assignee
Dongguan Hongsheng Metal & Plastic Technoloty Co ltd
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Priority to CN201910812979.5A priority Critical patent/CN110513312B/en
Publication of CN110513312A publication Critical patent/CN110513312A/en
Application granted granted Critical
Publication of CN110513312B publication Critical patent/CN110513312B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/084—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation hand fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/164—Multi-stage fans, e.g. for vacuum cleaners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses an inflation and deflation air pump, which comprises a shell, a motor, a first fan blade, a second fan blade, a first switching device and a second switching device, wherein an air inlet, an air inlet channel, an inflation inlet, an exhaust channel and an exhaust port are arranged in the shell; the motor is provided with double output shafts, and the first fan blade is connected to one output shaft of the motor and is positioned at one end of the air inlet channel; the second fan blade is connected to the other output shaft of the motor and is positioned at one end of the exhaust passage, and the second fan blade and the first fan blade are arranged in the same direction; the air charging port is positioned between the first fan blade and the second fan blade; the first switch device is arranged at the other end of the air inlet channel so as to disconnect or connect the air inlet with the air inlet channel; the second switch device is arranged at the other end of the exhaust passage so as to disconnect or connect the exhaust port and the exhaust passage. The inflation and deflation air pump is arranged in the air bag, can automatically inflate or deflate the air bag, and has the advantages of simple structure, convenient control and low cost.

Description

Inflation and deflation air pump
Technical Field
The invention relates to an air pump, in particular to an air pump which is arranged inside an air bag and can inflate or deflate the air bag.
Background
With the wide use of the inflatable products, the volume of the inflatable products is increased, the difficulty of manual inflation is increased, and the electric air pump is applied. For example, a large-sized inflatable bed for children is generally provided with an electric air pump inside, and the inflatable bed is inflated inside, so that the children can play on the bed body. However, as time passes, the gas in the inflatable bed slowly leaks, and the gas needs to be replenished at regular time, and then the electric air pump is started to replenish the gas. In addition, when the inflatable bed is not in use, the inflatable bed is deflated when needed so as to be convenient for transportation and storage. In these operations, the electric air pump plays a very convenient role.
However, most of the existing electric air pumps have only an air charging function, and air needs to be naturally discharged from another air discharging port or discharged by using another air discharging pump. This mode can influence the efficiency of filling and gassing, and it is inconvenient to use, and the cost is high. In the market, although some electric inflating and deflating pumps with inflating and deflating functions are available, the structure of the electric inflating and deflating pumps comprises a motor, a fan blade, an air passage and an air port. When the air bag is inflated, the motor is controlled to rotate forward through the control circuit, and then the fan blade is driven to rotate forward, so that air flow is driven to enter the inflation inlet through the air channel from the air inlet, and the air bag is automatically inflated. When the air is discharged, the control circuit controls the motor to rotate reversely, so that the fan blade is driven to rotate reversely, and the air in the air bag is discharged to the outside from the air charging port, so that automatic air discharge is realized. However, since the electric inflator pump is only provided with one fan blade, the reverse flow direction of the air flow can be realized only through the forward and reverse rotation of the fan blade, namely the forward and reverse rotation of the output shaft of the motor needs to be controlled, and a control circuit needs to be added to control the forward and reverse rotation of the motor, so that the production cost is increased; and is also disadvantageous for production.
Disclosure of Invention
The invention aims to provide an inflation and deflation air pump which is arranged inside an air bag and is used for automatically inflating or automatically deflating the air bag, and the inflation and deflation air pump is simple in structure, convenient to control and low in cost.
In order to achieve the purpose, the inflation and deflation air pump provided by the invention comprises a shell, a motor, a first fan blade, a second fan blade, a first switching device and a second switching device, wherein an air inlet, an air inlet channel, an inflation inlet, an exhaust channel and an exhaust port are arranged in the shell; the motor is provided with double output shafts, and the first fan blade is connected to one output shaft of the motor and is positioned at one end of the air inlet channel; the second fan blade is connected to the other output shaft of the motor and is positioned at one end of the exhaust passage, and the second fan blade and the first fan blade are arranged in the same direction; the air charging port is positioned between the first fan blade and the second fan blade; the first switch device is arranged at the other end of the air inlet channel so as to disconnect or connect the air inlet with the air inlet channel; the second switch device is arranged at the other end of the exhaust passage so as to disconnect or connect the exhaust port and the exhaust passage.
Compared with the prior art, the motor with the double output shafts is arranged, and the first fan blade and the second fan blade are arranged at the two ends of the double output shafts, so that the first fan blade is positioned at one end of the air inlet channel, the second fan blade is positioned at one end of the exhaust channel, and the air charging port is positioned between the first fan blade and the second fan blade, and therefore when the motor is started, the air flow of the air inlet is driven to the direction of the air charging port through the air inlet channel by the first fan blade, and the air flow at the air charging port is driven to the direction of the air outlet through the exhaust channel by the second fan blade. Therefore, after the first switch device is arranged at the air inlet and the second switch device is arranged at the air outlet, the air bag communicated with the air charging opening can be inflated through the air inlet channel and the first fan blade by opening the first switch device and closing the second switch device; when the first switch device is closed and the second switch device is opened, the air bag can be deflated through the second fan blade and the exhaust passage. Because the double-fan blade structure is arranged, the motor can realize the function of inflation and deflation without reverse rotation when the whole air pump is inflated or deflated, the structure is very simple and ingenious, and a control circuit for controlling the motor to rotate forward and backward is not required, so that the control is very simple, and the cost of the whole air pump is effectively reduced.
Preferably, a motor accommodating cavity is further formed in the shell, the motor, the first fan blade and the second fan blade are arranged in the motor accommodating cavity, one end of the motor accommodating cavity is communicated with one end of the air inlet channel, the other end of the motor accommodating cavity is communicated with one end of the air outlet channel, and the air charging port is formed in the side wall of the motor accommodating cavity. The motor accommodating cavity can be firmly provided with the motor, the first fan blade and the second fan blade, air flow can be collected intensively and flows to the inflation inlet, and meanwhile, the air flow flows through the motor to take away the heat of the motor, so that a certain heat dissipation effect is achieved on the motor.
Preferably, a first accommodating cavity and a second accommodating cavity are further formed in the shell, the first accommodating cavity is respectively communicated with the air inlet and the air inlet channel, the second accommodating cavity is respectively communicated with the air outlet and the air outlet channel, the first switching device is arranged in the first accommodating cavity, and the second switching device is arranged in the second accommodating cavity.
Preferably, the first switch device is rotatably arranged relative to the shell so as to disconnect or connect the air inlet and the air inlet channel; the second switch device is rotatably arranged relative to the shell so as to disconnect or connect the exhaust port and the exhaust passage.
Preferably, the first switch device is movably arranged relative to the shell so as to disconnect or connect the air inlet and the air inlet channel; the second switch device is movably arranged relative to the shell so as to disconnect or connect the exhaust port and the exhaust passage.
Preferably, the first switch device comprises a switch button, a bearing plate arranged at the lower side of the switch button and a sealing piece arranged on the bearing plate, wherein the switch button extends out of the air inlet, and when the switch button acts, the sealing piece is tightly attached to the air inlet or is far away from the air inlet. Through with the sealing member set up in on the loading board, can make when shift knob stretches out the air inlet the sealing member supports to press in the inboard of air inlet, thereby realize to the air inlet is sealed, otherwise communicate the air inlet with the intake duct.
Specifically, the lateral wall of shift knob extends spacing portion, spacing portion the sealing member cover is located spacing portion with between the loading board. And the bearing and the limiting part are used for limiting simultaneously, so that the sealing piece is firmly positioned, and the sealing performance is improved.
Preferably, the first switch device comprises a switch button with a cavity inside, a connecting column body arranged in the cavity and a sealing piece sleeved on the connecting column body, and when the switch button acts, the sealing piece is tightly attached to the inlet of the air inlet channel or is far away from the inlet of the air inlet channel. By arranging the sealing element on the connecting cylinder, the sealing element can be pressed against the inlet of the air inlet channel when the switch button is retracted into the air inlet, so that the air inlet channel is sealed, and the air inlet channel is communicated with the air inlet channel in the reverse direction.
Specifically, the connecting cylinder includes the main part, follows the main part lateral wall extends to spacing portion and detachably set up in the locating part of main part lower extreme, the sealing member cover in spacing portion reaches between the locating part. Because the limiting piece can be detached from the main body, the sealing piece can be sleeved from the lower end of the main body, after the limiting piece is assembled with the main body again, the limiting piece can limit the sealing piece together with the limiting part, so that reliable positioning of the sealing piece is realized, and the first switching device is simpler and more convenient to assemble and disassemble, and is convenient to maintain and replace the sealing piece.
Specifically, a second air port is formed in the top of the switch button, and the second air port is communicated with the cavity.
Specifically, the switch button is provided with a guiding part extending outwards, a guiding track is arranged in the shell, and the guiding part is slidably arranged on the guiding track so as to drive the switch button to act.
Specifically, the guide track is along a spiral track. Through setting up the spiral track, utilize the guiding part is in the spiral track is gone up to slide, can make shift knob rotates the realization is gone up, down to drive the sealing member removes, realizes to the air inlet with the intake duct disconnection or intercommunication.
Specifically, the highest point and the lowest point of the spiral track are provided with clamping grooves, and the clamping grooves can be used for clamping the guide part to position the switch button. Through setting up the block groove, can be in highest point and the locating of minimum point the guiding part is located, thereby is to the current state of shift knob is fixed a position, in order to keep the air inlet with the disconnection or the state of being linked with of intake duct realizes continuous inflation or gassing function.
Specifically, the first switch device further comprises an elastic reset piece, and the elastic reset piece is arranged between the switch button and the shell so as to provide an elastic force for enabling the switch button to extend out of the shell. Therefore, the switch button can be automatically reset, and the convenience of operation is improved.
Preferably, the second switching device has the same structure as the first switching device.
Preferably, the shell is provided with an electric control box, and a circuit board for controlling the motor to work is arranged in the electric control box.
Specifically, the inflation and deflation air pump further comprises an automatic inflation and deflation split pump, a USB interface connected with the circuit board is arranged on the shell, and the automatic inflation and deflation split pump is connected with the USB interface through a data line so as to be connected with the inflation and deflation air pump. Through setting up the USB interface for the air pump with the form of automatic air supply components of a whole that can function independently pump forms the form of branch to can connect at any time as required and use, match as required from both can reduce cost, can improve the flexibility of production and use again.
Drawings
Fig. 1 is a perspective view of an inflation and deflation air pump according to a first embodiment of the present invention.
Fig. 2 is an internal structural view of the inflation and deflation air pump according to the first embodiment of the present invention.
Fig. 3 is a block diagram of a first switching device of the inflation and deflation air pump according to the first embodiment of the present invention.
Fig. 4 is an exploded view of a first switching device of the inflation and deflation air pump according to the first embodiment of the present invention.
Fig. 5 is a state diagram of the inflation and deflation air pump according to the first embodiment of the present invention when inflated.
Fig. 6 is a state diagram of the inflation and deflation air pump according to the first embodiment of the present invention.
Fig. 7 is a perspective view of an inflation and deflation air pump according to a second embodiment of the present invention.
Fig. 8 is an internal structural view of the inflation and deflation air pump of the second embodiment of the present invention.
Fig. 9 is a block diagram of a first switching device of the inflation and deflation air pump according to the second embodiment of the present invention.
Fig. 10 is an exploded view of a first switching device of the inflation and deflation air pump of the second embodiment of the present invention.
Fig. 11 is a state diagram of the inflation and deflation air pump according to the second embodiment of the present invention when inflated.
Fig. 12 is a state diagram of the inflation and deflation air pump according to the second embodiment of the present invention.
Fig. 13 is a structural diagram of an inflation and deflation air pump according to a third embodiment of the present invention.
Fig. 14 is a structural view of another inflation and deflation air pump according to the third embodiment of the present invention.
Detailed Description
In order to describe the technical content, the constructional features and the effects achieved by the present invention in detail, the following description is made with reference to the embodiments in conjunction with the accompanying drawings.
As shown in fig. 1 to 6, the structure of the inflation and deflation air pump according to the first embodiment of the present invention is shown.
Referring to fig. 1 and 2, the inflation and deflation air pump 100 of the present embodiment is disposed inside an air bag to inflate the air bag, and includes a housing 11, a motor 12, a first fan blade 13, a second fan blade 14, a first switch device 15 and a second switch device 16, wherein an air inlet 11a, an air inlet 11b, an inflation inlet 11c, an exhaust passage 11d and an exhaust outlet 11e are disposed in the housing 11; the air inlet 11a and the air outlet 11e are exposed to the outside of the airbag, and the air outlet 11e is located in the airbag and communicates with the inside of the airbag. The intake port 11a and the exhaust port 11e are circular. The motor 12 has double output shafts, and the first fan blade 13 is connected to one output shaft of the motor 12 and is located at one end of the air inlet channel 11 b; the second fan blade 14 is connected to the other output shaft of the motor 12 and is located at one end of the exhaust passage 11d, and the second fan blade 14 and the first fan blade 13 are arranged in the same direction; the inflation inlet 11c is positioned between the first fan blade 13 and the second fan blade 14; the first switch device 15 is disposed at the other end of the air inlet 11b, so as to disconnect or connect the air inlet 11a and the air inlet 11 b; the second switching device 16 is provided at the other end of the exhaust passage 11d to disconnect or connect the exhaust port 11e from or to the exhaust passage 11 d.
Referring to fig. 1 and 2, a first accommodating cavity 11f, a second accommodating cavity 11g and a motor accommodating cavity 11h are further provided in the housing 11, the motor 12, the first fan blade 13 and the second fan blade 14 are disposed in the motor accommodating cavity 11h, one end of the motor accommodating cavity 11h is communicated with one end of the air inlet channel 11b, the other end of the motor accommodating cavity 11h is communicated with one end of the air outlet channel 11d, and the air charging port 11c is formed in the side wall of the motor accommodating cavity 11 h. The motor accommodating cavity 11h not only can firmly install the motor 12, the first fan blade 13 and the second fan blade 14, but also can collect and flow the air flow intensively to the inflation inlet 11c, and meanwhile, the air flow flows through the motor 12 and takes away the heat of the motor 12, so that a certain heat dissipation effect is achieved on the motor 12. The first accommodating cavity 11f is respectively communicated with the air inlet 11a and the air inlet 11b, the second accommodating cavity 11g is respectively communicated with the air outlet 11e and the air outlet 11d, the first switch device 15 is arranged in the first accommodating cavity 11f, and the second switch device 16 is arranged in the second accommodating cavity 11g.
Referring to fig. 2 again, the first switch device 15 and the second switch device 16 are rotatably disposed around their central axes relative to the housing 11 to disconnect or connect the air inlet 11a and the air inlet 11b. The first switch device 15 and the second switch device 16 are also movably disposed with respect to the housing 11 to disconnect or connect the intake port 11a and the intake port 11b. Specifically, the following are:
As shown in fig. 3 and 4, the first switch device 15 includes a switch button 151, a carrier plate 152 disposed below the switch button 151, and a sealing member 153 disposed on the carrier plate 152. The switch button 151 may be rotatable about its own central axis, and the central axis of the switch button 151 coincides with the central axis of the air inlet 11a. The switch button 151 is also movable in the direction of the central axis of the air inlet 11a so as to be able to extend or retract into the air inlet 11a. The middle side wall of the switch button 151 extends out of the limit part 154, the seal 153 is sleeved between the limit part 154 and the bearing plate 152, the switch button 151 is cylindrical, the bearing plate 152 is circular, the seal 153 is a flat and circular sealing piece, and the limit part 154 is circular. The stopper 154 has an outer diameter smaller than that of the seal 153 so that the upper surface of the seal 153 is exposed to be fitted inside the air inlet 11a. The outer diameter of the seal 153 is no greater than the outer diameter of the carrier plate 152, thereby ensuring that the edges of the seal 153 do not turn down. And the bearing plate 152 and the limiting part 154 are used for limiting simultaneously, so that the sealing piece 153 is firmly positioned, and the sealing performance is improved. The sealing member 153 may be sealingly attached to the air inlet 11a or away from the air inlet 11a when the switch button 151 is actuated. In summary, by disposing the sealing member 153 on the carrier 152, when the switch button 151 extends out of the air inlet 11a, the sealing member 153 may be pressed against the inner side of the air inlet 11a, so as to seal the air inlet 11a, and otherwise, the air inlet 11a and the air inlet 11b are communicated.
As shown in fig. 3 and 4, the switch button 151 is provided with guide portions 155 extending outwards, the guide portions 155 are located at the edge of the carrying plate 152, and the number of the guide portions is two, and the guide portions are symmetrically arranged at two opposite sides of the switch button 151. The inner side of the housing 11 extends downwards to form a guide plate 111, two sides of the guide plate 111 are symmetrically provided with guide rails 112, and the guide parts 155 are slidably arranged on the guide rails 112 to drive the switch button 151 to act. The guide rail 112 is a spiral rail. By providing the spiral track, the guide part 155 slides on the spiral track, so that the switch button 151 can be rotated and simultaneously moved up and down, thereby driving the sealing member 153 to move, and disconnecting or communicating the air inlet 11a with the air inlet 11b is realized. In addition, the highest point and the lowest point of the spiral track are provided with engaging grooves 113, and the engaging grooves 113 can engage the guiding parts 155 to position the switch button 151. By providing the engaging groove 113, the guide portion 155 may be positioned at the highest point and the lowest point, so as to position the current state of the switch button 151, so as to maintain the disconnected or connected state of the air inlet 11a and the air inlet 11b, and realize the function of sealing or continuous inflation.
As further shown in fig. 3, the first switch device 15 further includes a resilient return member 156, and the resilient return member 156 is a compression spring. The elastic restoring member 156 is disposed between the switch button 151 and the housing 11 to provide an elastic force for extending the switch button 151 out of the housing 11. This allows the switch button 151 to be automatically reset, thereby improving the convenience of operation. In this embodiment, when the guide portion 155 is engaged with the engagement groove 113 at the highest point of the spiral track, the compression spring is in an extended state, the switch button 151 extends out of the air inlet 11a, and the sealing member 153 seals the air inlet 11a. When the guide portion 155 is engaged with the engagement groove 113 at the lowest point of the spiral track, the compression spring is in a compressed state, the switch button 151 is retracted into the air inlet 11a, and the sealing member 153 is separated from the air inlet 11a, so that the air inlet 11a is communicated with the air inlet 11 b. The second switching device 16 has the same structure as the first switching device 15, except that the second switching device 16 controls the opening or closing of the exhaust port 11e and the exhaust passage 11d, and those skilled in the art can easily know the structure and connection relationship of the second switching device 16 according to the structure and connection relationship of the first switching device 15, so that the structure and connection relationship of the second switching device 16 will not be repeated here.
The shell 11 is provided with an electric control box 114, and a circuit board for controlling the motor 12 to work is arranged in the electric control box 114. The electronic control box 114 is disposed at one side of the housing 11.
In summary, with reference to fig. 5 and 6, the working principle of the inflation and deflation air pump 100 of the first embodiment is as follows:
As shown in fig. 5, before inflation, the first switch device 15 is operated to twist the switch button 151 to rotate the switch button 151, and at this time, the guide portion 155 is withdrawn from the engagement groove 113 at the highest point of the spiral track and rotated along the spiral track, so that the guide portion 155 slides down the lowest point of the spiral track and is engaged with the engagement groove 113 at the lowest point. In this process, the switch button 151 is retracted into the air inlet 11a from the closed state to the open state, that is, the switch button 151 is sealingly engaged with the inside of the air inlet 11a to the inside away from the air inlet 11a. At this time, the intake port 11a communicates with the intake port 11 b. The second switching device 16 keeps closing the exhaust port 11e. Then, the motor 12 is started to rotate the double output shafts, and the first fan blade 13 and the second fan blade 14 rotate simultaneously. Because the air inlet 11a is communicated with the air inlet 11b, under the driving of the first fan blade 13, air flows from the air inlet 11a into the first accommodating cavity 11f, enters the motor accommodating cavity 11h through the air inlet 11b, and finally enters the air bag from the air charging port 11c to charge the air bag. In addition, when the second switching device 16 closes the exhaust port 11e, the air flow is not discharged from the exhaust port 11e, although the second fan blade 14 rotates. When the air bag is completely inflated, the motor 12 stops, and the first switch device 15 is simultaneously operated to twist the switch button 151 to rotate reversely, and the guide portion 155 withdraws from the engagement groove 113 at the lowest point of the spiral track and automatically slides into the engagement groove 113 at the highest point of the spiral track under the action of the elastic restoring force of the elastic restoring member 156. In this process, the switch button 151 is moved from an open state to a closed state, that is, the switch button 151 protrudes from the air inlet 11a, and the sealing member 153 is sealingly fitted to the inside of the air inlet 11a from the inside away from the air inlet 11a. At this time, the intake port 11a is blocked from the intake port 11b, and the first switching device 15 closes the intake port 11a.
As shown in fig. 6, when the air is discharged, the second switching device 16 is operated, and the operation manner of the second switching device 16 and the actions of the respective parts inside the second switching device are the same as those of the first switching device 15. Accordingly, the exhaust port 11e can be opened so that the exhaust port 11e communicates with the exhaust passage 11 d. Then, the motor 12 is restarted, so that the first fan blade 13 and the second fan blade 14 rotate, the air flow in the air bag flows into the motor accommodating cavity 11h from the air charging port 11c, reaches the second accommodating cavity 11g through the air discharging port 11d, and finally is discharged to the outside from the air discharging port 11 e. When the air of the air bag is completely exhausted, the motor 12 is stopped, and the second switching device 16 is operated to block the exhaust port 11e from the exhaust passage 11 d. The second switching device 16 closes the air inlet 11a.
Compared with the prior art, the motor 12 with the double output shafts is arranged, the first fan blade 13 and the second fan blade 14 are arranged at two ends of the double output shafts, so that the first fan blade 13 is positioned at one end of the air inlet channel 11b, the second fan blade 14 is positioned at one end of the air outlet channel 11d, and the air charging port 11c is positioned between the first fan blade 13 and the second fan blade 14, and therefore when the motor 12 is started, the air flow of the air inlet 11a is driven to the direction of the air charging port 11c through the air inlet channel 11b by the first fan blade 13, and the air flow at the air charging port 11c is driven to the direction of the air outlet 11e through the air outlet channel 11d by the second fan blade 14. Therefore, when the first switch device 15 is disposed at the air inlet 11a and the second switch device 16 is disposed at the air outlet 11e, the air bag communicated with the air inlet 11c can be inflated through the air inlet 11b and the first fan blade 13 by opening the first switch device 15 and closing the second switch device 16; when the first switch device 15 is closed and the second switch device 16 is opened, the air bag can be deflated through the second fan blade 14 and the exhaust passage 11 d. Because of the double-fan blade structure, the motor 12 can realize the function of inflation and deflation without reverse rotation when the whole air pump is inflated or deflated, the structure is very simple and ingenious, and a control circuit for controlling the motor 12 to rotate forward and backward is not required, so that the control is very simple, and the cost of the whole air pump is effectively reduced.
As shown in fig. 7-12, the structure of the inflation and deflation air pump 200 according to the second embodiment of the present invention is shown.
Referring to fig. 7 and 8, the inflation and deflation air pump 200 of the present embodiment includes a housing 21, a motor 22, a first fan blade 23, a second fan blade 24, a first switch device 25 and a second switch device 26, wherein an air inlet 21a, an air inlet 21b, an inflation inlet 21c, an exhaust passage 21d and an exhaust outlet 21e are disposed in the housing 21; the air inlet 21a and the air outlet 21e are exposed to the outside of the airbag, and the air outlet 21e is located in the airbag and communicates with the inside of the airbag. The intake port 21a and the exhaust port 21e are circular. The motor 22 has double output shafts, and the first fan blade 23 is connected to one output shaft of the motor 22 and is located at one end of the air inlet 21 b; the second fan blade 24 is connected to the other output shaft of the motor 22 and is located at one end of the exhaust passage 21d, and the second fan blade 24 and the first fan blade 23 are arranged in the same direction; the inflation inlet 21c is positioned between the first fan blade 23 and the second fan blade 24; the first switch device 25 is disposed at the other end of the air intake duct 21b, so as to disconnect or connect the air intake port 21a and the air intake duct 21 b; the second switching device 26 is provided at the other end of the exhaust passage 21d to disconnect or connect the exhaust port e from or to the exhaust passage 21 d.
Referring to fig. 7 and 8, a first accommodating chamber 21f, a second accommodating chamber 21g and a motor accommodating chamber 21h are further provided in the housing 21, the motor 22, the first fan blade 23 and the second fan blade 24 are disposed in the motor accommodating chamber 21h, one end of the motor accommodating chamber 21h is communicated with one end of the air inlet 21b, the other end of the motor accommodating chamber 21h is communicated with one end of the air outlet 21d, and the air charging port 21c is opened on the side wall of the motor accommodating chamber 21 h. The motor accommodating cavity 21h can not only firmly install the motor 22, the first fan blade 23 and the second fan blade 24, but also collect and flow the air flow to the inflation inlet 21c in a concentrated manner, and meanwhile, the air flow flows through the motor 22 to take away the heat of the motor 22, so that a certain heat dissipation effect is achieved on the motor 22. The first accommodating chamber 21f is respectively communicated with the air inlet 21a and the air inlet 21b, and the second accommodating chamber 21g is respectively communicated with the air outlet 21e and the air outlet 21 d. An inlet end of the air inlet channel 21b extends into the first accommodating cavity 21f and is communicated with the first accommodating cavity 21 f; one end of the outlet of the exhaust passage 21d extends into the second accommodating chamber 21g. The first switch device 25 is disposed in the first accommodating chamber 21f, and the second switch device 26 is disposed in the second accommodating chamber 21g.
Referring to fig. 8, the first switch device 25 and the second switch device 26 are rotatably disposed around their central axes with respect to the housing 21 to disconnect or connect the air inlet 21a and the air inlet 21b. The first switch device 25 and the second switch device 26 are also movably disposed with respect to the housing 21 to disconnect or connect the intake port 21a and the intake port 21b. Specifically, the following are:
As shown in fig. 9 and 10, the first switch device 25 includes a switch button 251 having a cavity 251a therein, a connecting column 252 disposed in the cavity 251a, and a sealing member 253 sleeved on the connecting column 252. The top of the switch button 251 is provided with a second gas port 251b, and the second gas port 251b communicates with the cavity 251 a. When the switch button 251 is disposed in the first accommodating cavity 21f, the cavity 251a is further communicated with the first accommodating cavity 21 f. The switch button 251 may be rotatable about its central axis, and the central axis of the switch button 251 coincides with the central axis of the air inlet 21a. The switch button 251 is also movable in the direction of the central axis of the air inlet 21a so as to be able to extend or retract into the air inlet 21a.
As shown in fig. 9 and 10, the connecting column 252 includes a main body 252a, a stopper 252b extending from an outer side wall of the main body 252a, and a stopper 252c detachably disposed at a lower end of the main body 252a, and the sealing member 253 is sleeved between the stopper 252b and the stopper 252 c. The switch button 251 is cylindrical, the limit part 252b is circular, the seal 253 is a cylindrical seal ring, the diameter from the upper end to the lower end of the seal ring is gradually reduced, the diameter of the upper end of the seal ring is not greater than the diameter of the limit part 252b, the limit part 252c is in a reverse cone structure, the diameter of the lower end of the seal ring is equal to the diameter of the top of the limit part 252c, and the diameter of the inlet of the air inlet channel 21b is between the diameter of the upper end and the diameter of the lower end of the seal ring. The limiting piece 252c is fixed to the lower end of the main body 252a through screw connection. Because the limiting piece 252c can be detached from the main body 252a, the sealing piece 253 can be sleeved in from the lower end of the main body 252a, and after the limiting piece 252c is assembled with the main body 252a again, the limiting piece 252c and the limiting part 252b can jointly limit the sealing piece 253, so that reliable positioning of the sealing piece 253 is realized, and the assembly and the disassembly of the first switch device 25 are simpler and more convenient, and the maintenance and the replacement of the sealing piece 253 are facilitated. And the limiting part 252b and the limiting piece 252c are used for limiting simultaneously, so that the sealing piece 253 is firmly positioned, and the sealing performance is improved. When the switch button 251 is actuated, the sealing member 253 may be sealingly attached to the inlet of the air intake duct 21b or away from the inlet of the air intake duct 21 b. In summary, by disposing the sealing member 253 on the connecting column 252, when the switch button 251 is retracted into the air inlet 21a, the sealing member 253 can be pressed against the inlet of the air inlet 21b, so as to seal the air inlet 21b, and otherwise, the air inlet 21b and the air inlet 21a are communicated.
As shown in fig. 9 and 10, the lower end of the outside of the switch button 251 is provided with two guide portions 254 extending outwards, which are symmetrically disposed on two opposite sides of the switch button 251. The inner side of the housing 21 extends downward to form a guide plate 211, two sides of the guide plate 211 are symmetrically provided with guide rails 212, and the guide portion 254 is slidably disposed on the guide rails 212 to drive the switch button 251 to act. The guide rail 212 is a spiral rail. By providing the spiral track, the guide portion 254 slides on the spiral track, so that the switch button 251 can be rotated and simultaneously moved up and down, thereby driving the sealing member 253 to move, and disconnecting or communicating the air inlet 21a with the air inlet 21b is achieved. In addition, the highest point and the lowest point of the spiral track are provided with engaging grooves 213, and the engaging grooves 213 can engage the guide portions 254 to position the switch button 251. By providing the engaging groove 213, the guide portion 254 may be positioned at the highest point and the lowest point, so as to position the current state of the switch button 251, so as to maintain the disconnected or connected state of the air inlet 21a and the air inlet 21b, and realize the function of sealing or continuous inflation.
As further shown in fig. 9, the first switch device 25 further includes an elastic restoring member 255, and the elastic restoring member 255 is a compression spring. The elastic restoring member 255 is disposed between the switch button 251 and the housing 21, and is sleeved on the outer side of the connecting column 252 and the outer side of the inlet of the air inlet 21b, so as to provide an elastic force for extending the switch button 251 out of the housing 21. In this way, the switch button 251 can be automatically reset, and the convenience of operation is improved. In this embodiment, when the guide portion 254 is engaged with the engagement groove 213 at the highest point of the spiral track, the compression spring is in an extended state, the switch button 251 extends out of the air inlet 21a, and the sealing member 253 is far away from the air inlet 21a. When the guide portion 254 is engaged with the engagement groove 213 at the lowest point of the spiral rail, the compression spring is compressed, the switch button 251 is retracted into the air inlet 21a, and the seal 253 is sealed to the air inlet 21a, so that the air inlet 21a and the second air port 251b are communicated with the air inlet 21 b. The second switching device 26 has the same structure as the first switching device 25, except that the second switching device 26 controls the opening or closing of the exhaust port 21e and the exhaust passage 21d, and a person skilled in the art can easily know the structure and connection relationship of the second switching device 26 according to the structure and connection relationship of the first switching device 25, so that the structure and connection relationship of the second switching device 26 will not be repeated here.
The casing 21 is provided with an electric control box 214, and a circuit board for controlling the motor 22 to work is arranged in the electric control box 214. The electronic control box 214 is disposed between the air inlet 21a and the air outlet 21 e.
In summary, with reference to fig. 11 and 12, the inflation and deflation air pump 200 of the second embodiment works as follows:
As shown in fig. 11, before inflation, the first switch device 25 is operated to twist the switch button 251 to rotate the switch button 251, and at this time, the guide portion 254 is withdrawn from the engagement groove 213 at the lowest point of the spiral track, and the guide portion 254 automatically slides upward along the spiral track under the elastic force of the elastic restoring member 255. When the guide portion 254 slides to the highest point of the spiral track, it is caught in the catching groove 213 at the lowest point. In this process, the switch button 251 is turned from the off state to the on state, that is, the switch button 251 protrudes from the air inlet 21a, and the sealing member 253 is sealingly attached to the air inlet 21a to be away from the air inlet 21a. At this time, the intake port 21a and the second port 251b communicate with the intake port 21b through the cavity 251 a. The second switching device 26 keeps closing the exhaust port 21e. Then, the motor 22 is started to rotate the double output shafts, and the first fan blade 23 and the second fan blade 24 rotate simultaneously. Since the air inlet 21a is communicated with the air inlet 21b, the air flow is driven by the first fan blade 23 to flow from the air inlet 21a and the second air port 251b into the first accommodating cavity 21f, enter the motor accommodating cavity 21h through the air inlet 21b, and finally enter the air bag from the air charging port 21c to charge the air bag. In addition, when the second switching device 26 closes the air outlet 21e, the air flow is still unable to be discharged from the air outlet 21e and the second air outlet 261a of the second switching device 26, although the second fan blade 24 rotates. When the inflation of the air bag is completed, the motor 22 is stopped, the first switch device 25 is simultaneously operated, the switch button 251 is twisted to reversely rotate, the guide part 254 is withdrawn from the engagement groove 213 at the highest point of the spiral track, and slides into the engagement groove 213 at the lowest point of the spiral track. In this process, the switch button 251 is retracted into the air inlet 21a from the open state to the closed state, that is, the switch button 251 is retracted into the air inlet 21a, and the sealing member 253 is sealingly fitted to the air inlet 21a from the air inlet 21a. At this time, the intake port 21a and the second port 251b are blocked from the intake port 21b, and the first switching device 25 closes the intake port 21a and the second port 251b.
As shown in fig. 12, when the air is discharged, the second switching device 26 is operated, and the operation manner of the second switching device 26 and the actions of the respective parts inside thereof are the same as those of the first switching device 25. Accordingly, the exhaust port 21e and the second port 261a can be opened, so that the exhaust port 21e and the second port 261a communicate with the exhaust passage 21 d. Then, the motor 22 is restarted, so that the first fan blade 23 and the second fan blade 24 rotate, the air flow in the air bag flows into the motor accommodating cavity h from the air charging port 21c, reaches the second accommodating cavity 21g through the air discharging passage 21d, and finally is discharged to the outside from the air discharging port 21e and the second air opening 261 a. When the air of the airbag is completely exhausted, the motor 22 is stopped, and the second switching device 26 is operated to block the exhaust port 21e and the second air port 261a from the exhaust port 21 d. The second switching means 26 closes the air inlet 21a.
As shown in fig. 13 and 14, the structure of the inflation and deflation air pump according to the third embodiment of the present invention is shown.
In the embodiment, an automatic air supplementing split pump 300 with split design is additionally arranged on the basis of the air charging and discharging pump 100 in the first embodiment; an automatic air-supplementing split pump 300 may be added to the base of the air-inflating and-deflating pump 200 of the second embodiment. The shell 1 of the inflation and deflation air pump 100 is provided with a USB interface 11k connected with the circuit board, and the automatic air-supplementing split pump 300 is connected with the USB interface 11k through a USB data line 201 so as to be electrically connected with the inflation and deflation air pump 100. In normal operation, the inflation and deflation air pump 100 initiates inflation of the air bladder. However, since the inflation and deflation air pump 100 generates a loud noise when it is operated, when the air bag needs to be inflated at some time (for example, at noon break or at night, sleeping time), the surrounding people's work and rest are seriously affected by the activation of the inflation and deflation air pump. Therefore, by setting the automatic air-supplementing split pump 300, the automatic air-supplementing split pump 300 is quite in operation, and can be started when air supplementing is needed, so that air can be supplemented to the air bag, and other people can not be influenced due to high noise. In addition, by setting the USB interface 11k, the inflation and deflation air pump 100 and the automatic air-supplementing split pump 300 form a split type, and can be connected and used at any time according to the needs, so that the inflation and deflation air pump can be matched according to the needs, the cost is reduced, and the flexibility of production and use can be improved. The structure and principle of the automatic air-supplementing split pump 300 are the same as those of the conventional air-supplementing pump integrated into the air-inflating and air-deflating pump, and are well known to those skilled in the art, and thus, will not be described in detail.
The foregoing disclosure is merely illustrative of the principles of the present invention, and thus, it is intended that the scope of the invention be limited thereto and not by this disclosure, but by the claims appended hereto.

Claims (16)

1. An inflation and deflation air pump, which is characterized in that: the device comprises a shell, a motor, a first fan blade, a second fan blade, a first switching device and a second switching device, wherein an air inlet, an air inlet channel, an air charging port, an air discharging channel and an air discharging port are arranged in the shell; the motor is provided with double output shafts, and the first fan blade is connected to one output shaft of the motor and is positioned at one end of the air inlet channel; the second fan blade is connected to the other output shaft of the motor and is positioned at one end of the exhaust passage, and the second fan blade and the first fan blade are arranged in the same direction; the air charging port is positioned between the first fan blade and the second fan blade; the shell is internally provided with a motor accommodating cavity, the motor, the first fan blade and the second fan blade are arranged in the motor accommodating cavity, one end of the motor accommodating cavity is communicated with one end of the air inlet channel, the other end of the motor accommodating cavity is communicated with one end of the air outlet channel, and the air charging port is formed in the side wall of the motor accommodating cavity; the first switch device is arranged at the other end of the air inlet channel so as to disconnect or connect the air inlet with the air inlet channel; the second switch device is arranged at the other end of the exhaust passage so as to disconnect or connect the exhaust port and the exhaust passage.
2. The inflation and deflation air pump of claim 1, wherein: the shell is internally provided with a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is respectively communicated with the air inlet and the air inlet channel, the second accommodating cavity is respectively communicated with the air outlet and the air exhaust channel, the first switching device is arranged in the first accommodating cavity, and the second switching device is arranged in the second accommodating cavity.
3. The inflation and deflation air pump of claim 1, wherein: the first switch device is rotatably arranged relative to the shell so as to disconnect or connect the air inlet and the air inlet channel; the second switch device is rotatably arranged relative to the shell so as to disconnect or connect the exhaust port and the exhaust passage.
4. The inflation and deflation air pump of claim 1, wherein: the first switch device is movably arranged relative to the shell so as to disconnect or connect the air inlet and the air inlet channel; the second switch device is movably arranged relative to the shell so as to disconnect or connect the exhaust port and the exhaust passage.
5. The inflation and deflation air pump of claim 1, wherein: the first switch device comprises a switch button, a bearing plate arranged on the lower side of the switch button and a sealing piece arranged on the bearing plate, wherein the switch button extends out of the air inlet, and when the switch button acts, the sealing piece is tightly attached to the air inlet or is far away from the air inlet.
6. The inflation and deflation air pump of claim 5, wherein: the side wall of the switch button extends out of the limiting part, and the sealing piece is sleeved between the limiting part and the bearing plate.
7. The inflation and deflation air pump of claim 1, wherein: the first switch device comprises a switch button with a cavity inside, a connecting column body arranged in the cavity and a sealing piece sleeved on the connecting column body, wherein when the switch button acts, the sealing piece is tightly attached to an inlet of the air inlet channel or is far away from the inlet of the air inlet channel.
8. The inflation and deflation air pump of claim 7, wherein: the connecting column comprises a main body, a limiting part extending from the outer side wall of the main body to the direction, and a limiting part detachably arranged at the lower end of the main body, wherein the sealing part is sleeved between the limiting part and the limiting part.
9. The inflation and deflation air pump of claim 7, wherein: the top of the switch button is provided with a second air port which is communicated with the cavity.
10. The inflation and deflation air pump of any of claims 5 or 7, wherein: the switch button is provided with a guide part extending outwards, a guide rail is arranged in the shell, and the guide part is slidably arranged on the guide rail so as to drive the switch button to act.
11. The inflation and deflation air pump of claim 10, wherein: the guide track is along a spiral track.
12. The inflation and deflation air pump of claim 11, wherein: the highest point and the lowest point of the spiral track are provided with clamping grooves, and the clamping grooves can be used for clamping the guide part to position the switch button.
13. The inflation and deflation air pump of claim 12, wherein: the first switch device further comprises an elastic reset piece, wherein the elastic reset piece is arranged between the switch button and the shell, so as to provide an elastic force for enabling the switch button to extend out of the shell.
14. The inflation and deflation air pump of claim 1, wherein: the second switching device has the same structure as the first switching device.
15. The inflation and deflation air pump of claim 1, wherein: the shell is provided with an electric control box, and a circuit board for controlling the motor to work is arranged in the electric control box.
16. The inflation and deflation air pump of claim 15, wherein: the automatic air supplementing and discharging air pump further comprises an automatic air supplementing split pump, a USB interface connected with the circuit board is arranged on the shell, and the automatic air supplementing split pump is connected with the USB interface through a data line so as to be connected with the air supplementing and discharging air pump.
CN201910812979.5A 2019-09-05 2019-09-05 Inflation and deflation air pump Active CN110513312B (en)

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